Multi-layer screening contaminated soil pretreatment device

Abstract

This utility model discloses a multi-layer screening pretreatment device for contaminated soil, specifically relating to the field of contaminated soil screening technology. It includes a screening frame with a screening mesh fixed to its inner wall, and an electromagnet positioned above the screening mesh. A positioning processing component is provided on the upper surface of the electromagnet, used to position and rotate the electromagnet to a designated lower discharge area. The positioning processing component includes a sleeve plate fixedly connected to the upper surface of the electromagnet, with a positioning column penetrating the inner wall of the sleeve plate for positioning the rotation of the sleeve plate. By setting up the positioning processing component, after the electromagnet attracts metallic impurities, the counterclockwise rotation of the sleeve plate moves the electromagnet to the top of the positioning box. The metallic impurities are then discharged downwards through a guide plate under gravity. This addresses the problem of positioning metallic impurities to a designated area for screening and discharge, improving the efficiency of contaminated soil pretreatment and making the process more convenient.

Description

Technical Field

[0001] This utility model relates to the field of contaminated soil screening technology, and more specifically, to a multi-layer screening device for contaminated soil pretreatment. Background Technology

[0002] Contaminated soil often contains non-soil materials such as stones, bricks, and wood. These impurities can interfere with the effectiveness of subsequent chemical or biological remediation. Multi-layer screening devices use screens with different aperture sizes to classify the soil according to particle size and separate large particles of impurities.

[0003] Among existing publicly available documents, patent publication number CN215996860U discloses a pretreatment device for heavy metal contaminated soil remediation. This technology, by installing a first telescopic rod, a dividing plate, and a second telescopic rod on both sides of the outside of the crushing and screening hopper, allows the dividing plate to shield one side of the crushing and screening hopper when crushing waste residue, bricks, etc., in the soil, preventing the fragments from flying out and causing injury to surrounding workers. However, this technology has the following problems.

[0004] During the pretreatment of contaminated soil, it is difficult to separate some metallic impurities after multiple screenings. Once separated, it is also difficult to locate the metallic impurities in a designated area for further screening and discharge, making targeted treatment inconvenient. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solution: a multi-layer screening contaminated soil pretreatment device, including a screening frame, a screening screen fixed on the inner wall of the screening frame, and an electromagnet provided above the screening screen; The electromagnet has a positioning processing component on its upper surface. The positioning processing component is used to position and flip the electromagnet to a designated lower row area. The positioning processing component includes: A sleeve plate is fixedly connected to the upper surface of the electromagnet. A positioning post runs through the inner wall of the sleeve plate. The positioning post is used to position the rotation of the sleeve plate. Support bars are provided at both ends of the positioning post. The screening frame and the positioning post are fixedly connected to the support bars. Bolts, embedded in the threaded connection, are attached to one side of the outer wall of the sleeve plate. The bolts are used to press the positioning pins to lock the sleeve plate in place. A positioning box is located below the support bar, and the inner wall of the positioning box is provided with a guide plate.

[0006] In a preferred embodiment, a gap is provided between the electromagnet and the screening screen, and the electromagnet is slidably connected to the screening frame.

[0007] In a preferred embodiment, the two supports are symmetrically arranged about the positioning post, and the vertical cross-section of the positioning post is circular.

[0008] In a preferred embodiment, both the guide plate and the screening frame are fixedly connected to the positioning box, and the vertical cross-sectional shape of the guide plate is triangular.

[0009] In a preferred embodiment, one side of the filter frame is fixedly connected to an upper hopper, and one end of the filter frame is fixedly connected to a lower hopper, wherein the upper hopper is higher than the lower hopper.

[0010] In a preferred embodiment, springs are fixed to the lower surface of the filter box and near its four corners. The bottom end of the spring is provided with a support frame, and multiple springs are fixedly connected to the support frame. A vibration motor is provided between two springs. The vibration motor is fixedly connected to the screening frame and is used to vibrate the screening frame.

[0011] In a preferred embodiment, the plurality of springs are arranged in a rectangular distribution, and the filter box is tilted.

[0012] In a preferred embodiment, two linkage blocks are fixed on one side of the electromagnet, and each linkage block has a limiting block at its bottom. The limiting block is fixedly connected to the screening frame, and the linkage block and the limiting block are in contact. An inclined guide plate is slidably provided on the other side of the electromagnet, and the inclined guide plate is fixedly connected to the screening frame.

[0013] The technical effects and advantages of this utility model are as follows: 1. This utility model, by setting up a positioning processing component, allows the electromagnet to attract metal impurities. After the electromagnet attracts the metal impurities, the reversing bolt releases the squeezing and locking of the sleeve plate. The sleeve plate is rotated counterclockwise to move the electromagnet to the top of the positioning box. The electromagnet is then turned off, and the metal impurities are discharged through the guide plate under the action of gravity. The metal impurities can be positioned in the designated area for screening and discharge. The operation is simple and can accurately realize the positioning and discharge of metal impurities, improve the pretreatment efficiency of contaminated soil, and make the treatment more convenient.

[0014] 2. This utility model uses an inclined guide plate to guide the contaminated soil downwards to the area below the electromagnet, and a limiting block to limit and support the linkage block, making the electromagnet more stable when magnetically separating metal impurities, enhancing the limiting effect on the electromagnet, and ensuring the stable use of the electromagnet. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the multi-layer screening contaminated soil pretreatment device of this utility model.

[0016] Figure 2 This is a partial structural diagram showing the connection between the screening frame and the screening mesh of this utility model.

[0017] Figure 3 This is a schematic diagram of the vertical cross-section structure of the multi-layer screening contaminated soil pretreatment device of this utility model.

[0018] Figure 4 This is a partial structural diagram of the vertical cross-section of the connection between the limiting block and the screening frame of this utility model.

[0019] The attached diagram is labeled as follows: 1. Screening frame; 2. Screening mesh; 3. Electromagnet; 4. Sleeve plate; 5. Positioning column; 6. Bolt; 7. Support bar; 8. Positioning box; 9. Guide plate; 10. Upper hopper; 11. Lower hopper; 12. Spring; 13. Support frame; 14. Vibration motor; 15. Linkage block; 16. Limiting block; 17. Inclined guide plate. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] like Figure 1 - Figure 4 The present invention relates to a multi-layer screening contaminated soil pretreatment device, which is equipped with a positioning treatment component. The positioning treatment component can accurately locate and discharge metal impurities, thereby improving the efficiency of contaminated soil pretreatment and making the treatment more convenient. The specific structural configuration of the positioning treatment component is as follows.

[0022] Example 1: In this embodiment, as Figure 1 - Figure 3 As shown, a screening screen 2 is fixed to the inner wall of the screening frame 1, and an electromagnet 3 is positioned above the screening screen 2. A positioning processing component is provided on the upper surface of the electromagnet 3. This component is used to position and rotate the electromagnet 3 to a designated lower row area. The positioning processing component includes: a sleeve 4, fixedly connected to the upper surface of the electromagnet 3; a positioning post 5 penetrating the inner wall of the sleeve 4; the positioning post 5 for positioning the rotation of the sleeve 4; and support bars 7 at both ends of the positioning post 5. The screening frame 1 and the positioning post 5 are both fixedly connected to the support bars 7; a bolt 6, threadedly connected to one side of the outer wall of the sleeve 4; the bolt 6 for pressing the positioning post 5 to lock the sleeve 4; and a positioning box 8 located below the support bars 7. The inner wall of the positioning box 8 is provided with a guide plate 9. A gap exists between the electromagnet 3 and the screening screen 2, and the electromagnet 3 is slidably connected to the screening frame 1. The two support bars 7 are symmetrically arranged about the positioning post 5, and the vertical cross-section of the positioning post 5 is circular. The guide plate 9 and the screening frame 1 are both fixedly connected to the positioning box 8, and the vertical cross-section of the guide plate 9 is triangular.

[0023] In this embodiment, as Figure 1As shown, an upper hopper 10 is fixedly connected to one side of the screening frame 1, and a lower hopper 11 is fixedly connected to one end of the screening frame 1. The upper hopper 10 is higher than the lower hopper 11. Large impurities are discharged down the upper hopper 10, and small impurities are discharged down the screening screen 2 to the bottom of the inner wall of the screening frame 1. The lower hopper 11 then discharges the impurities, thus achieving a dispersed discharge.

[0024] In this embodiment, as Figure 1 As shown, springs 12 are fixed to the lower surface of the screening frame 1 and near its four corners. Support frames 13 are provided at the bottom of each spring 12, and multiple springs 12 are fixedly connected to the support frames 13. A vibration motor 14 is provided between two springs 12, and the vibration motor 14 is fixedly connected to the screening frame 1, and is used to vibrate the screening frame 1. The multiple springs 12 are arranged in a rectangular distribution, and the screening frame 1 is tilted. The support frames 13 support the multiple springs 12, and the vibration motor 14 vibrates the screening frame 1, enabling the screening frame 1 to drive the screening mesh 2 to vibrate, resulting in a superior vibration effect.

[0025] In this embodiment, the multi-layer screening contaminated soil pretreatment device is used by placing the contaminated soil on the upper surface of the screening screen 2 and the inner wall of the screening frame 1. By turning on the electromagnet 3, a magnetic attraction force is generated, and the bolt 6 is rotated in the forward direction. The bolt 6 is threadedly engaged with the sleeve plate 4, so that the bolt 6 is pressed against the outer wall of the positioning column 5, thereby squeezing and locking the sleeve plate 4 and the positioning column 5. By turning on the electromagnet 3, multiple springs 12 are supported by the support frame 13, and the vibration motor 14 is turned on. The vibration motor 14 vibrates the screening frame 1, which drives the screening screen 2 to vibrate, thus vibrating the contaminated soil. Large impurities are screened on the upper surface of the screening screen 2 and discharged down the upper discharge hopper 10, while small impurities are discharged down the screening screen 2 to the bottom of the inner wall of the screening frame 1 and discharged down through the lower discharge hopper 11.

[0026] Simultaneously, electromagnet 3 magnetically attracts the metallic impurities in the contaminated soil. Then, bolt 6 is reversed, and the threads of bolt 6 and sleeve plate 4 separate, so bolt 6 no longer presses against positioning post 5. Then, sleeve plate 4 is rotated counterclockwise, which drives electromagnet 3 to rotate counterclockwise. At the same time, the support bar 7 of screening frame 1 supports positioning post 5, and positioning post 5 positions sleeve plate 4 to rotate counterclockwise. At the same time, sleeve plate 4 drives electromagnet 3 to rotate counterclockwise to the position above positioning box 8. Then, electromagnet 3 is turned off, and the metallic impurities in the contaminated soil on electromagnet 3 are discharged downwards under the action of gravity, along the inner wall of guide plate 9, and through the opening on one side of positioning box 8. In this way, the metallic impurities in the contaminated soil are positioned and discharged to the designated area.

[0027] Example 2: In this embodiment, as Figure 4As shown, two linkage blocks 15 are fixed on one side of the electromagnet 3. Each linkage block 15 has a limit block 16 at its bottom. The limit block 16 is fixedly connected to the screening frame 1, and the linkage block 15 and the limit block 16 are in contact. An inclined guide plate 17 is slidably provided on the other side of the electromagnet 3. The inclined guide plate 17 is fixedly connected to the screening frame 1.

[0028] In this embodiment, the multi-layer screening contaminated soil pretreatment device guides the contaminated soil through the inclined guide plate 17 to the position below the electromagnet 3. At the same time, the screening frame 1 supports the limiting block 16, which limits and supports the bottom end of the linkage block 15. The linkage block 15 is firmly connected to the electromagnet 3. In this way, the electromagnet 3 can achieve the limiting treatment operation when magnetically separating the metal impurities in the contaminated soil.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layer screening contaminated soil pretreatment device, comprising a screening frame (1), characterized in that: The inner wall of the screening frame (1) is fixed with a screening screen (2), and an electromagnet (3) is provided above the screening screen (2). The upper surface of the electromagnet (3) is provided with a positioning processing component, which is used to position and flip the electromagnet (3) to a designated lower row area. The positioning processing component includes: The sleeve (4) is fixedly connected to the upper surface of the electromagnet (3). The inner wall of the sleeve (4) is penetrated by a positioning post (5). The positioning post (5) is used to position the rotation of the sleeve (4). Both ends of the positioning post (5) are provided with support bars (7). The screening frame (1) and the positioning post (5) are fixedly connected to the support bars (7). Bolt (6) is embedded in the threaded connection on one side of the outer wall of the sleeve (4). The bolt (6) is used to press the positioning post (5) to lock the sleeve (4). The positioning box (8) is located below the support bar (7), and the inner wall of the positioning box (8) is provided with a guide plate (9).

2. The multi-layer screening contaminated soil pretreatment device according to claim 1, characterized in that: A gap is provided between the electromagnet (3) and the screening screen (2), and the electromagnet (3) is slidably connected to the screening frame (1).

3. The multi-layer screening contaminated soil pretreatment device according to claim 1, characterized in that: The two supports (7) are symmetrically arranged about the positioning post (5), and the vertical cross-section of the positioning post (5) is circular.

4. The multi-layer screening contaminated soil pretreatment device according to claim 1, characterized in that: The guide plate (9) and the screening box (1) are both fixedly connected to the positioning box (8), and the vertical cross-section of the guide plate (9) is triangular.

5. The multi-layer screening contaminated soil pretreatment device according to claim 1, characterized in that: The filter box (1) is fixedly connected to an upper hopper (10) on one side, and a lower hopper (11) is fixedly connected to one end of the filter box (1), with the upper hopper (10) being higher than the lower hopper (11).

6. The multi-layer screening contaminated soil pretreatment device according to claim 1, characterized in that: Springs (12) are fixed on the lower surface of the filter box (1) and near its four corners. The bottom end of the spring (12) is provided with a support frame (13), and multiple springs (12) are fixedly connected to the support frame (13). A vibration motor (14) is provided between two springs (12), and the vibration motor (14) is fixedly connected to the screening frame (1). The vibration motor (14) is used to vibrate the screening frame (1).

7. The multi-layer screening contaminated soil pretreatment device according to claim 6, characterized in that: The multiple springs (12) are arranged in a rectangular distribution, and the filter box (1) is set at an angle.

8. The multi-layer screening contaminated soil pretreatment device according to claim 1, characterized in that: Two linkage blocks (15) are fixed on one side of the electromagnet (3). Each linkage block (15) has a limit block (16) at its bottom end. The limit block (16) is fixedly connected to the screening box (1), and the linkage block (15) and the limit block (16) are in contact. An inclined guide plate (17) is slidably provided on the other side of the electromagnet (3), and the inclined guide plate (17) is fixedly connected to the screening box (1).

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