Leaching device

Abstract

The utility model relates to the technical field of material recovery, and discloses a leaching device which comprises a leaching assembly and an adjustable material spreading assembly, and the adjustable material spreading assembly comprises a material spreading plate. After the dipping mixture is placed on the leaching assembly, in the conveying process of the leaching assembly, the dipping mixture penetrates through a gap between the material spreading plate and the conveying face of the leaching assembly and is evenly spread on the conveying face of the leaching assembly through the material spreading plate, and it is guaranteed that the liquid removal amount of all the dipping mixtures on the leaching assembly is consistent; and thus, the dryness of the materials subjected to solid-liquid separation is ensured to be consistent. And through the arrangement of the adjustable material spreading assembly, it is guaranteed that the dryness of the materials subjected to one-time leaching can meet the recycling requirement, solid-liquid separation does not need to be conducted again, and the material recycling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material recovery, in particular to a leaching device. Background Art

[0002] Recycling the materials in the impregnation mixture produced after the material is impregnated can effectively improve the material utilization rate and reduce the waste of materials, such as the recovery of the catalyst in the impregnation mixture produced after the catalyst is impregnated. The device currently used for solid-liquid separation in the impregnation mixture is a filter cloth conveying solid-liquid separator, which includes a filter cloth and a driving mechanism for driving the filter cloth. When in use, the impregnation mixture is placed on the filter cloth. During the transmission of the filter cloth, the liquid in the impregnation mixture passes through the filter cloth and falls off. The material left on the filter cloth is the recovered material. The impregnation mixture is unevenly spread on the filter cloth, and it is impossible to ensure that the dryness of all the materials left on the filter cloth is consistent, which easily causes the dryness of the material to not meet the recycling requirements, and solid-liquid separation needs to be performed again, affecting the material recovery efficiency. Utility Model Content

[0003] The utility model aims to overcome the problem in the prior art that the material dryness does not meet the recycling requirements due to uneven distribution of filter cloth materials, and provides a leaching device that can spread the impregnation mixture on the leaching component with uniform thickness to leach and obtain materials that meet the recycling requirements.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a leaching device, including: a leaching component, the leaching component has a conveying surface for conveying and leaching an impregnation mixture; and an adjustable paving component, the adjustable paving component includes a paving plate, the paving plate is located above the conveying surface, and a gap is formed between the two for the impregnation mixture to pass through, and the paving plate can be adjusted to change the size of the gap to change the thickness of the impregnation mixture spread on the conveying surface.

[0005] Preferably, the adjustable paving assembly includes a first bracket and a connecting piece movably connected to the first bracket. An adjustment long hole extending perpendicular to the conveying surface of the leaching assembly is provided on the paving board. The connecting piece is passed through the adjustment long hole and connected to the first bracket. The connecting piece can be passed through different positions of the adjustment long hole to adjust the size of the gap between the paving board and the conveying surface of the leaching assembly.

[0006] Preferably, the paving board includes a first scraper and a second scraper relatively connected along the width direction of the conveying surface, an angle is formed between the first scraper and the second scraper, and the first scraper and the second scraper are inclined from top to bottom toward the conveying direction of the leaching component relative to the vertical direction.

[0007] Preferably, the leaching device includes a supporting frame, the leaching assembly includes a first drive roller and a second drive roller arranged on the supporting frame, a driver connected to the first drive roller or the second drive roller, and a leaching mesh belt wound around the first drive roller and the second drive roller, and the conveying surface is formed by the leaching mesh belt.

[0008] Preferably, the leaching device further comprises an adjusting assembly adjustably disposed on the supporting frame, wherein the adjusting assembly is connected to the first driving roller so as to be adjustable to change the height of the first driving roller.

[0009] Preferably, mounting holes are formed on the support frame, and the adjustment assembly includes an adjustment frame and connecting pins. The adjustment frame has multiple adjustment holes formed at intervals along its height direction. The connecting pins are detachably connected to the mounting holes and a part of the adjustment holes. The connecting pins can be connected to different adjustment holes to adjust the height of the adjustment frame.

[0010] Preferably, the adjustment assembly includes two adjustment frames respectively arranged on opposite sides of the first driving roller.

[0011] Preferably, the leaching assembly further comprises a transmission bar, the first driving roller is drivingly connected to the driver via the transmission bar, and the driver is movably arranged on the supporting frame so as to be adjustable to tighten or loosen the transmission bar.

[0012] Preferably, the leaching device further comprises a vibration component, which is used to drive the leaching mesh belt to vibrate; and / or, the leaching device further comprises a collecting component arranged below the leaching mesh belt, which is used to collect the liquid leached by the leaching component.

[0013] Preferably, the vibration assembly includes a second bracket arranged on the support frame and a vibrator arranged on the second bracket, the vibrator is located below the conveying surface of the leaching mesh belt and in contact with the leaching mesh belt; and / or, the collection assembly includes a liquid collecting trough obliquely arranged below the leaching mesh belt and a drainage pipe connected to the lowest point of the liquid collecting trough.

[0014] Through the above technical solution, after the impregnation mixture is placed on the leaching component, during the conveying process of the leaching component, the impregnation mixture passes through the gap between the paving plate and the conveying surface of the leaching component, and is evenly spread on the conveying surface of the leaching component by the paving plate, ensuring that the deliquidation amount of all the impregnation mixtures on the leaching component is consistent, thereby ensuring that the dryness of the material after solid-liquid separation is consistent. In addition, for impregnation mixtures with different liquid contents or materials with different requirements for recovered dryness, the size of the gap can be adjusted by the paving plate to change the thickness of the impregnation mixture spread on the conveying surface of the leaching component, and the thickness of the impregnation mixture is inversely proportional to the amount of liquid leached per unit time. Through the setting of the adjustable paving component, it is ensured that the dryness of the material after one leaching can meet the recycling requirements, without the need for solid-liquid separation again, thereby improving the material recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the leaching device of the utility model;

[0016] Figure 2 is a front view of the leaching device;

[0017] Figure 3 is a top view of the leaching device; and

[0018] Figure 4 It is a schematic diagram of the structure of the adjustable paving assembly of the leaching device.

[0019] Description of Reference Numerals

[0020] 10. Leaching assembly; 11. First driving roller; 12. Second driving roller; 13. Driver; 14. Leaching mesh belt; 15. Transmission bar; 20. Adjustable spreading assembly; 21. First bracket; 22. Spreading plate; 221. Adjusting long hole; 222. First scraper; 223. Second scraper; 23. Connector; 30. Support frame; 40. Adjusting assembly; 41. Adjusting frame; 411. Adjusting hole; 42. Connecting nail; 50. Vibrating assembly; 51. Second bracket; 52. Vibrator; 53. Extension rod; 60. Collecting assembly; 61. Liquid collecting tank; 62. Drainage pipe; 70. Discharge bin. DETAILED DESCRIPTION

[0021] In the present invention, unless otherwise stated, directional words such as "upper, lower, left, right" generally refer to the upper, lower, left, and right directions shown in the drawings. "Inside and outside" refer to the inside and outside of the outline of the corresponding component.

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] It should be noted that the impregnation mixture described herein is a mixture of liquid and solid in a non-fluid state.

[0024] See also Figures 1 to 4 As shown, the utility model provides a leaching device, including: a leaching component 10, the leaching component 10 has a conveying surface for conveying and leaching an impregnation mixture; and an adjustable paving component 20, the adjustable paving component 20 includes a paving plate 22, the paving plate 22 is located above the conveying surface, and a gap is formed between the two for the impregnation mixture to pass through, and the paving plate 22 can be adjusted to change the size of the gap to change the thickness of the impregnation mixture spread on the conveying surface.

[0025] In this embodiment, the impregnation mixture is placed on the conveying surface of the leaching component 10, and the leaching component 10 drives the impregnation mixture to pass through the gap between the paving plate 22 and the conveying surface of the leaching component 10, and the impregnation mixture is evenly spread on the conveying surface of the leaching component 10. During the conveying process of the leaching component 10, the liquid in the impregnation mixture passes through the leaching component 10 and falls off, and is separated from the material in the impregnation mixture, so that the material remains on the conveying surface of the leaching component 10. Since the thickness of the impregnation mixture at each part of the conveying surface is the same as that spread by the paving plate 22, the dryness of the material obtained after leaching is consistent, and the paving plate 22 can be adjusted according to the liquid content of the impregnation mixture to adjust the thickness of the impregnation mixture spread on the conveying surface. The greater the thickness of the impregnation mixture, the smaller the amount of liquid leached per unit time, and the smaller the thickness of the impregnation mixture, the smaller the amount of liquid leached per unit time, so that the collected material can meet the recycling requirements, avoid leaching again, and improve the material recovery efficiency.

[0026] See also Figures 1 to 4 As shown, in some embodiments of the present invention, the adjustable paving assembly 20 includes a first bracket 21 and a connecting piece 23 movably connected to the first bracket 21, and the paving board 22 is provided with an adjustment long hole 221 extending along a conveying surface perpendicular to the leaching assembly 10. The connecting piece 23 is passed through the adjustment long hole 221 and connected to the first bracket 21. The connecting piece 23 can be passed through different positions of the adjustment long hole 221 to adjust the size of the gap between the paving board 22 and the conveying surface of the leaching assembly 10.

[0027] In this embodiment, the gap between the paving plate 22 and the conveying surface of the leaching component 10 is adjusted by the cooperation of the connecting piece 23 and the adjusting long hole 221. The adjusting long hole 221 can limit the adjustment path of the paving plate 22 to avoid the adjustment direction of the paving plate 22 from being offset, thereby ensuring that the bottom surface of the paving plate 22 is always parallel to the conveying surface of the leaching component 10, thereby avoiding inconsistent thickness of the impregnation mixture in the width direction of the conveying surface.

[0028] Specifically, the connecting member 23 is a bolt, and a screw hole is provided on the first bracket 21. The connecting member 23 is inserted into the adjusting slot 221 and screwed into the screw hole of the first bracket 21. After the connecting member 23 is loosened from the screw hole of the first bracket 21, the paving plate 22 can be moved relative to the connecting member 23, that is, the connecting member 23 can be moved along the adjusting slot 221 relative to the paving plate 22, and the paving plate 22 is moved to the gap size between it and the conveying surface of the leaching component 10 to meet the requirements, and then the connecting member 23 is tightened to the screw hole to lock the paving plate 22 to the first bracket 21, and the paving plate 22 is adjusted. The connecting member 23 is convenient and fast to adjust by screw thread, and after being locked, the strong stability of the paving plate 22 can be guaranteed.

[0029] See also Figures 1 to 4 As shown, in some embodiments of the present invention, the paving board 22 includes a first scraper 222 and a second scraper 223 which are relatively connected along the width direction of the conveying surface, and there is an angle between the first scraper 222 and the second scraper 223, and the first scraper 222 and the second scraper 223 are inclined from top to bottom toward the conveying direction of the leaching component 10 relative to the vertical direction.

[0030] In this embodiment, the material is placed just behind the connection between the first scraper 222 and the second scraper 223 ( Figure 3 The impregnation mixture is driven by the leaching assembly 10 to the connection between the first scraper 222 and the second scraper 223, and is deposited on the back of the first scraper 222 and the second scraper 223 ( Figure 3 The first scraper 222 and the second scraper 223 are arranged on the left side of the first scraper 222 and the second scraper 223. During the continuous conveying process of the leaching assembly 10, the amount of impregnation mixture accumulated increases, gradually moving from the middle of the back of the first scraper 222 and the second scraper 223 to the edge, and the impregnation mixture in the middle and edge of the back of the first scraper 222 and the second scraper 223 simultaneously passes through the gap and spreads on the conveying surface. The first scraper 222 and the second scraper 223 are inclined in the vertical direction, so that the impregnation mixture accumulated on the upper back of the two can move downward along the back of the first scraper 222 and the second scraper 223, so as to promote the impregnation mixture to pass through the gap and avoid a large amount of impregnation mixture from accumulating on the back of the first scraper 222 and the second scraper 223.

[0031] Specifically, the angle formed between the first scraper 222 and the second scraper 223 facing the conveying direction of the leaching component 10 is an acute angle. The leaching device also includes a lower bin 70, which is fixed to the first bracket 21, and the lower bin 70 and the paving board 22 are respectively arranged on the opposite sides of the first bracket 21. The lower bin 70 is arranged behind the adjustable paving assembly 20, that is, the lower bin 70 and the adjustable paving assembly 20 are arranged in sequence along the conveying direction of the leaching component 10. Along the length direction of the conveying surface, the outlet of the lower bin 70 is located directly behind the connection between the first scraper 222 and the second scraper 223, so that the impregnation mixture in the lower bin 70 can accurately fall to the connection between the first scraper 222 and the second scraper 223. In addition, the outlet of the lower bin 70 is also located directly above the conveying surface of the leaching component 10, so that the impregnation mixture can accurately fall from the outlet of the lower bin 70 to the conveying surface of the leaching component 10.

[0032] See also Figures 1 to 4As shown, in some embodiments of the present invention, the leaching device includes a support frame 30, a first bracket 21 is fixed above the support frame 30, and the leaching assembly 10 includes a first driving roller 11 and a second driving roller 12 arranged on the support frame 30, a driver 13 drivingly connected to the first driving roller 11 or the second driving roller 12, and a leaching mesh belt 14 wound around the first driving roller 11 and the second driving roller 12, and the conveying surface is formed by the leaching mesh belt 14.

[0033] In this embodiment, the support frame 30 is used to install the leaching assembly 10 and the adjustable material laying assembly 20, and to raise the leaching mesh belt 14 to provide sufficient space for the impregnation mixture to fall. The leaching mesh belt 14 is supported from the middle by the first driving roller 11 and the second driving roller 12 to form an upper and lower two-layer annular structure, and the conveying surface is located on the upper surface of the upper leaching mesh belt 14.

[0034] See also Figures 1 to 4 As shown, in some embodiments of the present invention, the leaching device further includes an adjusting assembly 40 adjustably disposed on the supporting frame 30 , and the adjusting assembly 40 is connected to the first driving roller 11 so as to be adjustable to change the height of the first driving roller 11 .

[0035] In this embodiment, the adjustment component 40 makes the height of the first driving roller 11 higher than the second driving roller 12, so that the leaching mesh belt 14 is inclined, and the inclination angle is 1° to 45°. In addition to falling due to gravity, the liquid in the impregnation mixture is also moved toward the lowest point of the leaching mesh belt 14 due to the inclination of the leaching mesh belt 14. The liquid is separated from the material by forces in two directions at the same time, which can increase the solid-liquid separation efficiency of the impregnation mixture and ensure that the collected material can meet the recycling requirements again. In addition, according to the different liquid content of the impregnation mixture and the material dryness requirements, the height of the first driving roller 11 is adjusted by the adjustment component 40, and then the inclination angle of the leaching mesh belt 14 is adjusted. The larger the inclination angle of the leaching mesh belt 14, the more liquid can be leached, and the smaller the inclination angle of the leaching mesh belt 14, the less liquid can be leached.

[0036] See also Figures 1 to 4 As shown, in some embodiments of the present invention, mounting holes are formed on the support frame 30, and the adjustment assembly 40 includes an adjustment frame 41 and a connecting nail 42. The adjustment frame 41 has a plurality of adjustment holes 411 formed at intervals along its height direction, and the connecting nail 42 is detachably connected to the mounting holes and a part of the adjustment holes 411. The connecting nail 42 can be connected to different adjustment holes 411 to adjust the height of the adjustment frame 41.

[0037] In this embodiment, after the connecting nail 42 is detached from the supporting frame 30, the adjusting frame 41 can move in the vertical direction relative to the supporting frame 30. After the adjusting frame 41 moves to a suitable position, the adjusting hole 411 on the adjusting frame 41 is connected with the corresponding mounting hole of the supporting frame 30 through the connecting nail 42 to lock and fix the adjusting frame 41 on the supporting frame 30.

[0038] Specifically, the adjustment frame 41 is a gantry structure, and adjustment holes 411 are formed on both vertical arms. Figure 2 The orientation shown is for reference. Two adjustment holes 411 are formed on the left vertical arm of the adjustment frame 41, and two rows of adjustment holes 411 are formed on the right vertical arm. The left row has two adjustment holes 411 spaced apart in the vertical direction, and the right row has three adjustment holes 411 spaced apart in the vertical direction. There are also multiple mounting holes on the support frame 30, a portion of which corresponds to the adjustment holes 411 on one vertical arm of the adjustment frame 41, and another portion of which corresponds to the adjustment holes 411 on the other vertical arm of the adjustment frame 41. Figure 2 The orientation shown is for reference. There is one mounting hole corresponding to the left arm of the adjustment frame 41, and three mounting holes corresponding to the right arm of the adjustment frame 41. The center line of the three mounting holes forms a right triangle with the right angle located at the lower right corner. The adjustment hole 411 is a round hole, the mounting hole is a screw hole, and the connecting nail 42 is a screw. The threaded connection is convenient for disassembly and assembly, and after connection, the adjustment frame 41 is more stable to ensure the stability of the leaching assembly 10 during the working process.

[0039] See also Figures 1 to 4 As shown, in some embodiments of the present invention, the adjustment assembly 40 includes two adjustment frames 41 respectively disposed on opposite sides of the first driving roller 11 .

[0040] Through the above arrangement, the heights of both sides of the first driving roller 11 can be kept consistent, ensuring that the first driving roller 11 is in a horizontal state, thereby making the thickness of the impregnated mixture in the width direction of the conveying surface consistent.

[0041] See also Figures 1 to 4 As shown, in some embodiments of the present invention, the leaching assembly 10 also includes a transmission bar 15, and the first driving roller 11 is driven and connected to the driver 13 through the transmission bar 15. The driver 13 is movably arranged on the support frame 30 so as to be able to be adjusted to tighten or loosen the transmission bar 15.

[0042] In this embodiment, both ends of the transmission bar 15 can be wound around moving wheels of different diameters, the moving wheel with a small diameter is coaxially connected to the driver 13, and the moving wheel with a large diameter is coaxially connected to the first driving roller 11, so as to achieve deceleration and avoid the excessive rotation speed of the driver 13 and accelerate the wear of the first driving roller 11, the second driving roller 12 and the leaching mesh belt 14. In addition, the transmission bar 15 makes it unnecessary for the driver 13 to be directly connected to the first driving roller 11, so as to avoid the space occupation of the first driving roller 11 in the axial direction.

[0043] Specifically, the driver 13 can be slidably arranged on the support frame 30, and the transmission bar 15 can be tensioned or loosened by sliding. The driver 13 can also be rotatably arranged on the support frame 30, with the rotation center deviating from the driving axis of the driver 13, and the transmission bar 15 can be tensioned or loosened by rotation. The transmission bar 15 can be a belt or a chain, and the corresponding driving wheel is a gear.

[0044] See also Figures 1 to 4 As shown, in some embodiments of the present invention, the leaching device further comprises a vibration assembly 50, and the vibration assembly 50 is used to drive the leaching mesh belt 14 to vibrate.

[0045] Through the above arrangement, the vibration assembly 50 provides power for the leaching mesh belt 14, promotes the separation of the liquid in the impregnation mixture and the material on the conveying surface of the leaching mesh belt 14, and improves the leaching efficiency of the impregnation mixture.

[0046] See also Figures 1 to 4 As shown, in some embodiments of the present invention, the vibration assembly 50 includes a second bracket 51 disposed on the support frame 30 and a vibrator 52 disposed on the second bracket 51 . The vibrator 52 is located below the conveying surface of the leaching mesh belt 14 and contacts the leaching mesh belt 14 .

[0047] In this embodiment, the vibrator 52 transmits the vibration force to the upper leaching mesh belt 14, so that the impregnation mixture on the conveying surface of the leaching mesh belt 14 vibrates, which promotes the liquid in the impregnation mixture to be quickly separated from the material.

[0048] Specifically, the vibration assembly 50 also includes an extension rod 53 in a bent structure, one end of the extension rod 53 is connected to the end of the vibrator 52, the bending part is connected to the second bracket 51, and the other end is connected to the fixed part of the first driving roller 11. On the one hand, the second bracket 51 cooperates with the extension rod 53 to lift the vibrator 52 to the bottom of the conveying surface. On the other hand, during the vibration of the vibrator 52, the bent extension rod 53 can be elastically deformed at its bending part to absorb most or all of the vibration force generated by the vibrator 52, so as to avoid most or all of the vibration force of the vibrator 52 being directly applied to the second bracket 51 and the support frame 30, thereby avoiding damage to the second bracket 51 and the support frame 30. The extension rod 53 can be made of metal material so as to be elastically deformed at the bending part. The vibrator 52 can be pneumatic or hydraulic, and its power supply can be a mobile power supply, such as a battery, or it can be connected to the power supply through wires. The vibration mode of the vibrator 52 is periodic vibration.

[0049] See also Figures 1 to 4 As shown, in some embodiments of the present invention, the leaching device further includes a collecting assembly 60 disposed below the leaching mesh belt 14 , and the collecting assembly 60 is used to collect the liquid leached by the leaching assembly 10 .

[0050] Through the above arrangement, the liquid leached from the impregnation mixture can be discharged in a centralized manner to avoid pollution to the surrounding environment of the leaching device. In addition, the liquid that can be reused can also be collected by the collection assembly 60 for reuse, thus saving resources.

[0051] See also Figures 1 to 4 As shown, in some embodiments of the present invention, the collecting assembly 60 includes a liquid collecting trough 61 obliquely disposed below the leaching mesh belt 14 and a drainage pipe 62 connected to the lowest point of the liquid collecting trough 61 .

[0052] In this embodiment, the liquid collecting tank 61 collects all the liquid that falls from the leaching mesh belt 14, and the drainage pipe 62 can be connected to other storage containers to drain the liquid in the liquid collecting tank 61 into the storage container.

[0053] Specifically, the inclination direction of the liquid collecting trough 61 is the same as that of the leaching mesh belt 14. The liquid collecting trough 61 is a trough-like structure with an open top, and its opening faces the leaching mesh belt 14 above. The area of ​​the opening is larger than the area of ​​the conveying surface of the leaching mesh belt 14, ensuring that all the liquid falling from the leaching mesh belt 14 can enter the liquid collecting trough 61.

[0054] The use of this leaching device is as follows:

[0055] Adjust the paving plate 22 to form a required gap size between it and the conveying surface of the leaching mesh belt 14, and tighten the connecting piece 23 into the screw hole of the first bracket 21;

[0056] Adjust the adjustment frame 41 to a suitable height, and connect the connecting nail 42 to the adjustment hole 411 of the adjustment frame 41 and the mounting hole of the support frame 30 to lock the adjustment frame 41 to the support frame 30;

[0057] Start the driver 13, so that the first driving roller 11 and the second driving roller 12 drive the leaching mesh belt 14 to move;

[0058] The impregnation mixture is placed in the lower hopper 70, and the impregnation mixture falls from the outlet of the lower hopper 70 onto the conveying surface of the leaching mesh belt 14, and the leaching mesh belt 14 drives the impregnation mixture to pass through the gap between the paving plate 22 and the conveying surface of the leaching mesh belt 14, and the impregnation mixture is evenly spread on the conveying surface of the leaching mesh belt 14 through the paving plate 22, so that the liquid in the impregnation mixture passes through the leaching mesh belt 14 and falls into the liquid collecting tank 61;

[0059] The liquid in the liquid collecting tank 61 is guided to a storage container or the next recovery process through the drainage pipe 62 .

[0060] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A leaching device, characterized in that: include: a leaching assembly (10) having a conveying surface for conveying and leaching the impregnation mixture; as well as An adjustable paving assembly (20), the adjustable paving assembly (20) comprising a paving plate (22), the paving plate (22) being located above the conveying surface, and a gap is formed between the two for the impregnation mixture to pass through, the paving plate (22) being adjustable to change the size of the gap to change the thickness of the impregnation mixture spread on the conveying surface.

2. The leaching device according to claim 1, characterized in that The adjustable paving assembly (20) includes a first bracket (21) and a connecting piece (23) movably connected to the first bracket (21); the paving plate (22) is provided with an adjustment long hole (221) extending perpendicularly to the conveying surface of the leaching assembly (10); the connecting piece (23) is passed through the adjustment long hole (221) and connected to the first bracket (21); the connecting piece (23) can be passed through different positions of the adjustment long hole (221) to adjust the size of the gap between the paving plate (22) and the conveying surface of the leaching assembly (10).

3. The leaching device according to claim 1, characterized in that: The paving plate (22) includes a first scraper (222) and a second scraper (223) which are relatively connected along the width direction of the conveying surface, and an angle is formed between the first scraper (222) and the second scraper (223), and the first scraper (222) and the second scraper (223) are inclined from top to bottom toward the conveying direction of the leaching component (10) relative to the vertical direction.

4. The leaching device according to claim 1, characterized in that The leaching device comprises a support frame (30), the leaching assembly (10) comprises a first driving roller (11) and a second driving roller (12) arranged on the support frame (30), a driver (13) drivingly connected to the first driving roller (11) or the second driving roller (12), and a leaching mesh belt (14) wound around the first driving roller (11) and the second driving roller (12), and the conveying surface is formed by the leaching mesh belt (14).

5. The leaching device according to claim 4, characterized in that The leaching device further comprises an adjustment assembly (40) adjustably arranged on the support frame (30), wherein the adjustment assembly (40) is connected to the first driving roller (11) so as to be adjustable to change the height of the first driving roller (11).

6. The leaching device according to claim 5, characterized in that The support frame (30) is formed with mounting holes, and the adjustment assembly (40) comprises an adjustment frame (41) and a connecting nail (42). The adjustment frame (41) is formed with a plurality of adjustment holes (411) spaced apart along its height direction, and the connecting nail (42) is detachably connected to the mounting holes and a part of the adjustment holes (411). The connecting nail (42) can be connected to different adjustment holes (411) to adjust the height of the adjustment frame (41).

7. The leaching device according to claim 6, characterized in that The adjustment assembly (40) comprises two adjustment frames (41) respectively arranged on opposite sides of the first driving roller (11).

8. The leaching device according to any one of claims 4 to 7, characterized in that The leaching assembly (10) further comprises a transmission bar (15), the first driving roller (11) is drivingly connected to the driver (13) via the transmission bar (15), and the driver (13) is movably arranged on the supporting frame (30) so as to be adjustable to tighten or loosen the transmission bar (15).

9. The leaching device according to any one of claims 4 to 7, characterized in that The leaching device further comprises a vibration component (50), wherein the vibration component (50) is used to drive the leaching mesh belt (14) to vibrate; and / or, The leaching device further comprises a collecting assembly (60) arranged below the leaching mesh belt (14), wherein the collecting assembly (60) is used to collect liquid leached by the leaching assembly (10).

10. The leaching device according to claim 9, characterized in that The vibration assembly (50) comprises a second bracket (51) arranged on the support frame (30) and a vibrator (52) arranged on the second bracket (51), wherein the vibrator (52) is located below the conveying surface of the leaching mesh belt (14) and is in contact with the leaching mesh belt (14); and / or, The collecting assembly (60) comprises a liquid collecting trough (61) obliquely arranged below the leaching mesh belt (14) and a drainage pipe (62) connected to the lowest point of the liquid collecting trough (61).

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