A lead-zinc ore slag dewatering and drying device

Abstract

The utility model discloses a kind of lead-zinc ore slag dehydration drying device, it is related to lead-zinc ore slag drying technical field;And the utility model includes screw conveyor, the top of screw conveyor is equipped with scattering subassembly, preheating subassembly, scattering subassembly is used to scatter after the dehydration of lead-zinc ore slag filter cake, preheating subassembly is used to heat lead-zinc ore slag preliminary;The scattering subassembly includes scattering box, the top of scattering box is fixedly installed with U-shaped block, U-shaped block's middle portion is rotatably installed with driving shaft, one end of driving shaft is fixedly installed with bevel gear one, the upper and lower sides of bevel gear one are all meshed with bevel gear two, the middle portion of upper bevel gear two is fixedly installed with driven shaft one;The utility model is rotated by setting scattering subassembly, driven shaft one, stirring blade one and driven shaft two, stirring blade two opposite direction, thereby to slag agglomeration preliminary scattering, avoid having large agglomerate into rotary drum dryer, effectively improve the uniformity of slag drying.

Description

Technical Field

[0001] This utility model relates to the field of lead-zinc slag drying technology, specifically a lead-zinc slag dehydration and drying device. Background Technology

[0002] During the mining and smelting of lead and zinc ore, a large amount of lead and zinc slag is generated. This slag usually contains high moisture content. If it is directly piled up or transported, it will not only increase the processing cost, but may also cause heavy metal ions to diffuse due to moisture penetration, resulting in environmental pollution. Therefore, lead and zinc slag is processed by dewatering and drying equipment. During the processing, it is first dewatered by a plate filter press, and then transported to a rotary drum dryer by a screw conveyor for drying. However, the slag filter blocks formed after dehydration are often hard and severely agglomerated. If they are only broken up by the screw conveyor blades and enter the rotary dryer, large particles will still remain. This will lead to uneven drying, difficulty in evaporating internal moisture, and accumulation inside the drum, affecting the continuous operation of the equipment. Secondly, if the agglomerated blocks are directly fed into the rotary dryer, the slag will need to be dried for a long time, which will reduce the drying efficiency of the slag. Utility Model Content

[0003] To address the issues of large particles remaining after dispersing slag using only a screw conveyor and the need for prolonged drying of the slag, this invention aims to provide a dehydration and drying device for lead-zinc slag.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a lead-zinc slag dewatering and drying device, including a screw conveyor, the top of which is provided with a dispersing component and a preheating component. The dispersing component is used to disperse the dewatered lead-zinc slag filter blocks, and the preheating component is used to preheat the lead-zinc slag. The dispersing component includes a dispersing box, a U-shaped block is fixedly installed at the top of the dispersing box, a drive shaft is rotatably installed in the middle of the U-shaped block, a bevel gear one is fixedly installed at one end of the drive shaft, and bevel gear two are meshed on both the upper and lower sides of the bevel gear one. A driven shaft is fixedly installed in the middle of the upper bevel gear 2. The driven shaft 1 is rotatably connected to the top of the U-shaped block and to the lower bevel gear 2. Several sets of inclined stirring blades 1 are fixedly installed on the outside of the driven shaft 1. A driven shaft 2 is fixedly installed at the bottom of the lower bevel gear 2. The driven shaft 2 is rotatably connected to the bottom of the U-shaped block and to the dispersing box. An anchor stirring blade 2 is fixedly installed on the outside of the driven shaft 2. A protective cover 1 is provided on the outside of the U-shaped block. The protective cover 1 is fixedly connected to the dispersing box and rotatably connected to the driven shaft 1.

[0005] Preferably, the preheating component includes an industrial hot air blower, which is fixedly connected to a screw conveyor. One end of the industrial hot air blower is fixedly installed with a pipe through two symmetrically distributed fixing blocks. The top end of the pipe is fixedly installed with two symmetrically distributed connecting pipes through two symmetrically distributed fixing blocks. The bottom end of the connecting pipe is fixedly installed with several evenly distributed air outlet pipes. The air outlet pipes pass through the dispersing box, and the bottom end of the air outlet pipes is fixedly installed with an inclined air outlet hood.

[0006] Preferably, the dispersing box is equipped with a screen inside, and a shaking component is provided at the bottom of the screen for shaking the screen. The shaking component includes two fixed plates facing each other and fixedly connected to the inner wall of the dispersing box. A guide rod is slidably installed in the middle of the fixed plate, and a movable plate is fixedly installed at the bottom of the guide rod. A drive shaft is rotatably driven through the bottom of the dispersing box, and an elliptical wheel in contact with the movable plate is fixedly installed on the outside of the drive shaft. A spring is fixedly installed between each movable plate and the fixed plate, and the spring is located outside the guide rod. Two guide plates are fixedly installed at the bottom of the screen in a mirror-symmetrical arrangement and are fixedly connected to the guide rod. A second protective cover is provided on the outside of each movable plate and is fixedly connected to the inner wall of the dispersing box. The guide rod is slidably connected to the second protective cover.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This application sets up a dispersing component, in which driven shaft one and stirring blade one rotate in opposite directions to driven shaft two and stirring blade two, thereby initially dispersing slag agglomerates, preventing large clumps from entering the rotary drum dryer, and effectively improving the uniformity of slag drying. 2. By setting up a preheating component, the hot air generated by the industrial hot air blower is transported to the air outlet pipe through pipes and connecting pipes, and then blown directly onto the slag during the dispersal process through the inclined air outlet hood, thus achieving the initial preheating of the slag, reducing the drying load of the slag entering the rotary dryer, shortening the total drying time, and improving the overall drying efficiency. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the internal structure of the disassembled part in this utility model.

[0011] Figure 3 This is a schematic diagram of the connection structure between the dispersing box and the air outlet pipe in this utility model.

[0012] Figure 4 This is a schematic diagram of the connection structure between the screen and the guide plate in this utility model.

[0013] Figure 5 This utility model Figure 2 Enlarged view of point A in the middle.

[0014] Figure 6 This utility model Figure 4 Enlarged view of point B in the middle.

[0015] In the diagram: 1. Screw conveyor; 2. Dispersing assembly; 20. Dispersing box; 21. U-shaped block; 22. Drive shaft; 23. Bevel gear one; 24. Bevel gear two; 25. Driven shaft one; 26. Agitator blade one; 27. Driven shaft two; 28. Agitator blade two; 29. ​​Protective cover one; 3. Preheating assembly; 31. Industrial hot air blower; 32. Pipe; 33. Connecting pipe; 34. Air outlet pipe; 35. Air outlet cover; 4. Screen; 5. Vibration assembly; 51. Fixed plate; 52. Guide rod; 53. Moving plate; 54. Drive shaft; 55. Elliptical wheel; 56. Spring; 57. Guide plate; 58. Protective cover two. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figure 1-6 As shown, this utility model provides a lead-zinc slag dewatering and drying device, including a screw conveyor 1. The top of the screw conveyor 1 is provided with a dispersing component 2 and a preheating component 3. The dispersing component 2 is used to disperse the dewatered lead-zinc slag filter blocks, and the preheating component 3 is used to preheat the lead-zinc slag. The dispersing assembly 2 includes a dispersing box 20. A U-shaped block 21 is fixedly installed at the top of the dispersing box 20. A drive shaft 22 is rotatably installed in the middle of the U-shaped block 21. A bevel gear 23 is fixedly installed at one end of the drive shaft 22. Bevel gears 24 are meshed on both the upper and lower sides of the bevel gear 23. A driven shaft 25 is fixedly installed in the middle of the upper bevel gear 24. The driven shaft 25 is rotatably connected to the top of the U-shaped block 21 and to the lower bevel gear 24. Several sets of inclined stirring blades 26 are fixedly installed on the outside of the driven shaft 25. A driven shaft 27 is fixedly installed at the bottom of the lower bevel gear 24. The driven shaft 27 is rotatably connected to the bottom of the U-shaped block 21. The driven shaft 27 is rotatably connected to the dispersing box 20. Anchor-type stirring blades 28 are fixedly installed on the outside of the driven shaft 27. By setting the dispersing component 2, the driven shaft 25 and stirring blades 26 rotate in opposite directions to the driven shaft 27 and stirring blades 28, thereby initially dispersing the slag agglomerates and preventing large clumps from entering the rotary dryer, effectively improving the uniformity of slag drying. The drive shaft 22 is driven by motor 1, and the drive end of motor 1 is connected to the drive shaft 22 through a coupling. The tilt angle of stirring blades 26 can be 60 degrees, which can be selected according to the actual situation. The dehydrated lead-zinc slag filter blocks enter the dispersing box 20 from the hopper at the top of the dispersing box 20.

[0018] The preheating component 3 includes an industrial hot air blower 31, which is fixedly connected to the screw conveyor 1. One end of the industrial hot air blower 31 is fixedly installed with a pipe 32 through two symmetrically distributed fixing blocks. The top end of the pipe 32 is fixedly installed with two symmetrically distributed connecting pipes 33 through two symmetrically distributed fixing blocks. Several evenly distributed air outlet pipes 34 are fixedly installed at the bottom end of the connecting pipes 33. The air outlet pipes 34 pass through the dispersing box 20, and the bottom end of the air outlet pipes 34 is fixedly installed with an inclined air outlet hood 35. By setting up the preheating component 3, the hot air generated by the industrial hot air blower 31 is transported to the air outlet pipes 34 through the pipes 32 and connecting pipes 33, and blown directly onto the slag in the dispersing process through the inclined air outlet hood 35, realizing the initial preheating of the slag, reducing the drying load of the slag entering the rotary dryer, shortening the total drying time, and improving the overall drying efficiency.

[0019] The dispersing box 20 is equipped with a screen 4 inside, and a shaking component 5 is provided at the bottom of the screen 4. The shaking component 5 is used to shake the screen 4. By setting the screen 4, the qualified slag is directly dropped into the screw conveyor 1, while the undispersed slag is left in the dispersing box 20 for dispersing, thereby further improving the uniformity of the slag in the rotary dryer.

[0020] The shaking assembly 5 includes two fixed plates 51 facing each other. The fixed plates 51 are fixedly connected to the inner wall of the dispersing box 20. A guide rod 52 is slidably installed in the middle of the fixed plate 51, and a movable plate 53 is fixedly installed at the bottom of the guide rod 52. A drive shaft 54 ​​rotates through the bottom of the dispersing box 20. An elliptical wheel 55 is fixedly installed on the outside of the drive shaft 54, which contacts the movable plate 53. By setting the shaking assembly 5, the drive shaft 54 ​​drives the elliptical wheel 55 to rotate. The contact between the elliptical wheel 55 and the movable plate 53 pushes the guide rod 52 to move up and down, thereby realizing the shaking of the screen 4. This avoids the accumulation and blockage of slag on the surface of the screen 4, ensuring continuous and efficient screening and improving screening accuracy. The drive shaft 54 ​​is driven by a second motor, and the drive end of the second motor is connected to the drive shaft 54 ​​through a coupling.

[0021] A spring 56 is fixedly installed between each movable plate 53 and the fixed plate 51. The spring 56 is located outside the guide rod 52. By setting the spring 56, the shaking frequency of the screen 4 is increased, so that the shaking effect of the screen 4 is better.

[0022] Two mirror-symmetrical guide plates 57 are fixedly installed at the bottom of the screen 4. The guide plates 57 are fixedly connected to the guide rod 52. By setting the guide plates 57, the slag after being broken up is guided, so as to prevent the slag from falling into the spring 56 and affecting the contraction of the spring 56.

[0023] The outer side of the U-shaped block 21 is provided with a protective cover 29, which is fixedly connected to the dispersing box 20 and rotatably connected to the driven shaft 25. By setting the protective cover 29, the bevel gear 23 and bevel gear 24 are protected to prevent slag from falling onto the bevel gear 23 and bevel gear 24 and affecting the meshing of the bevel gear 23 and bevel gear 24.

[0024] Each movable plate 53 is provided with a second protective cover 58 on its exterior. The second protective cover 58 is fixedly connected to the inner wall of the dispersing box 20, and the guide rod 52 is slidably connected to the second protective cover 58. By setting the second protective cover 58, the spring 56 is further protected, and the elliptical wheel 55 and the movable plate 53 are also protected.

[0025] Working principle: In actual use, pressure is applied to the filter plate through the hydraulic system. The free water, surface adsorbed water, and interstitial water in the lead-zinc slag pass through the filter cloth under pressure and are discharged, forming a filter cake with low moisture content. Then the filter plate is loosened, and the filter cake falls off automatically or is scraped off by a mechanical device. The dewatered slag enters the dispersing box 20 through the feed hopper for dispersing and preheating. Then it is conveyed to the rotary drum dryer through the screw conveyor 1. Then it slowly rotates in an inclined state. The dewatered lead-zinc slag moves from the high end to the low end in the axial direction. During the movement, the lifting plate continuously lifts, disperses and moves the lead-zinc slag in the circumferential direction, so that the material can fully exchange heat with the high temperature flue gas in the drum until it is dried to the specified requirements. The dried material is discharged from the discharge device. The principle of breaking up dehydrated lead-zinc slag: The starting motor drives the drive shaft 22 and bevel gear 23 to rotate. The bevel gear 23 and the upper and lower bevel gears 24 rotate. The rotation of the upper bevel gear 24 drives the driven shaft 25 and the stirring blade 26 to rotate. The lower bevel gear 24 drives the driven shaft 27 and the stirring blade 28 to rotate in the opposite direction, thus initially breaking up the slag agglomerates. The broken slag is screened through screen 4, so that qualified slag falls into screw conveyor 1 and enters the rotary dryer, while unqualified slag remains in the breaking box 20. When the screen 4 is screening, the motor 2 drives the drive shaft 54 ​​to rotate, which drives the elliptical wheel 55 to rotate. Under the action of the elliptical wheel 55, the moving plate 53 and the guide rod 52 move up and down in the fixed plate 51. The up and down movement of the guide rod 52 drives the guide plate 57 and the screen 4 to move up and down, thereby realizing the shaking of the screen 4. When breaking up the slag, the industrial hot air blower 31 is started. Cold air is drawn in by the blower and heated by heating elements driven by electric or gas energy. The hot air is then transported to the air outlet pipe 34 through the pipe 32 and connecting pipe 33, and blown directly onto the broken up slag through the inclined air outlet hood 35 to achieve the initial preheating of the slag.

[0026] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A dewatering and drying device for lead-zinc slag, comprising a screw conveyor (1), characterized in that: The top of the screw conveyor (1) is provided with a dispersing component (2) and a preheating component (3). The dispersing component (2) is used to disperse the dehydrated lead-zinc slag filter blocks, and the preheating component (3) is used to preheat the lead-zinc slag. The dispersing assembly (2) includes a dispersing box (20), a U-shaped block (21) is fixedly installed at the top of the dispersing box (20), a drive shaft (22) is rotatably installed in the middle of the U-shaped block (21), a bevel gear (23) is fixedly installed at one end of the drive shaft (22), bevel gears (24) are meshed on both the upper and lower sides of the bevel gears (23), and a driven shaft (25) is fixedly installed in the middle of the upper bevel gear (24). The driven shaft (25) and the U-shaped block (21) are connected to each other. The top is rotatably connected, the driven shaft 1 (25) is rotatably connected to the lower bevel gear 2 (24), and several sets of inclined stirring blades 1 (26) are fixedly installed on the outside of the driven shaft 1 (25). The driven shaft 2 (27) is fixedly installed at the bottom of the lower bevel gear 2 (24). The driven shaft 2 (27) is rotatably connected to the bottom of the U-shaped block (21). The driven shaft 2 (27) is rotatably connected to the dispersing box (20). The anchor stirring blade 2 (28) is fixedly installed on the outside of the driven shaft 2 (27).

2. The lead-zinc slag dewatering and drying device as described in claim 1, characterized in that, The preheating component (3) includes an industrial hot air blower (31), which is fixedly connected to a screw conveyor (1). One end of the industrial hot air blower (31) is fixedly installed with a pipe (32) through two symmetrically distributed fixed blocks. The top end of the pipe (32) is fixedly installed with two symmetrically distributed connecting pipes (33) through two symmetrically distributed fixed blocks. The bottom end of the connecting pipes (33) is fixedly installed with several evenly distributed air outlet pipes (34). The air outlet pipes (34) pass through the dispersing box (20). The bottom end of the air outlet pipes (34) is fixedly installed with an inclined air outlet hood (35).

3. The lead-zinc slag dewatering and drying device as described in claim 1, characterized in that, The inside of the dispersing box (20) is provided with a screen (4), and the bottom of the screen (4) is provided with a shaking component (5), which is used to shake the screen (4).

4. The lead-zinc slag dewatering and drying device as described in claim 3, characterized in that, The shaking component (5) includes two fixed plates (51) facing each other. The fixed plates (51) are fixedly connected to the inner wall of the dispersing box (20). A guide rod (52) is slidably installed in the middle of the fixed plate (51). A movable plate (53) is fixedly installed at the bottom of the guide rod (52). A drive shaft (54) is rotatably passed through the bottom of the dispersing box (20). An elliptical wheel (55) that contacts the movable plate (53) is fixedly installed on the outside of the drive shaft (54).

5. The lead-zinc slag dewatering and drying device as described in claim 4, characterized in that, A spring (56) is fixedly installed between each of the movable plates (53) and the fixed plate (51), and the spring (56) is located outside the guide rod (52).

6. The lead-zinc slag dewatering and drying device as described in claim 3, characterized in that, The bottom end of the screen (4) is fixedly installed with two mirror-symmetrically distributed guide plates (57), and the guide plates (57) are fixedly connected to the guide rod (52).

7. The lead-zinc slag dewatering and drying device as described in claim 1, characterized in that, The outer side of the U-shaped block (21) is provided with a protective cover (29), which is fixedly connected to the disassembly box (20) and rotatably connected to the driven shaft (25).

8. The lead-zinc slag dewatering and drying device as described in claim 4, characterized in that, Each of the movable plates (53) is provided with a second protective cover (58) on the outside. The second protective cover (58) is fixedly connected to the inner wall of the dispersing box (20), and the guide rod (52) is slidably connected to the second protective cover (58).

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