A waste leachate treatment pre-filtering device

Abstract

This utility model discloses a pre-filtration device for landfill leachate treatment, belonging to the field of landfill leachate treatment technology. It includes a base plate, with a filter box fixedly connected to the top surface of the base plate and a storage box fixedly connected to the side of the filter box. A squeezing mechanism is installed on the storage box. In this utility model, impurities in the landfill leachate are filtered through an arc-shaped filter screen inside the filter frame. A servo motor drives a spiral conveyor rod to rotate, causing the impurities filtered through the arc-shaped filter screen to move downwards, allowing them to smoothly enter the inner cavity of the filter basket for collection. An electric telescopic rod drives a squeezing plate to move up and down, extending into the inner cavity of the filter basket to squeeze the impurities, expelling residual leachate. The residual leachate is then guided into the inner cavity of the filter box through a return pipe, ensuring complete separation of the leachate and impurities.

Description

Technical Field

[0001] This utility model relates to the field of landfill leachate treatment technology, and more specifically, to a landfill leachate treatment pre-filtration device. Background Technology

[0002] Landfill leachate is a high-concentration organic wastewater formed from the moisture contained in the landfill itself, rainwater and snowmelt entering the landfill, and other moisture, after deducting the saturated water holding capacity of the landfill and the cover soil layer, and passing through the landfill and cover soil layers. Pretreatment of landfill leachate is necessary to remove impurities.

[0003] A search revealed that utility model patent CN222331588U discloses a filter for pre-removing sludge from landfill leachate. The filter includes a base plate connected to a filter box and a collection box. The filter box is connected to an inlet pipe, a balance pipe, and a filter plate. The collection box has a door. The filter box and collection box each have a first outlet and a second outlet. The collection box is connected to a suction pump and a purification frame. The suction pump is connected to an air inlet pipe and a connecting pipe. The air inlet pipe is connected to the filter box, and the connecting pipe is connected to the purification frame. The purification frame is detachably connected to an adsorption plate and an activated carbon plate. The purification frame is connected to an air outlet pipe. The base plate is connected to a solution tank, and the air outlet pipe is connected to the solution tank. The solution tank is connected to an exhaust pipe and a drain pipe. This patent can effectively purify the odorous gases carried by landfill leachate, greatly reducing the odor of the discharged gas, protecting the working environment and the health of workers. It has a simple structure and significantly improved practicality.

[0004] However, the above patent still has the following shortcomings: the impurities filtered down the filter plate are not easy to be introduced into the filter frame, and when the filter holes on the filter plate are blocked by impurities, it is not easy to clean them. Therefore, we propose a pre-filtration device for treating landfill leachate. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a pre-filtration device for treating landfill leachate.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A pre-filtration device for treating landfill leachate includes a base plate, a filter box fixedly connected to the top surface of the base plate, a storage box fixedly connected to the side of the filter box, a squeezing mechanism on the storage box, a receiving mechanism in the inner cavity of the storage box, an insertion slot on the side of the filter box, a discharge trough on one side of the storage box, a filter frame fitted inside the insertion slot, an arc-shaped filter screen fixedly fitted inside the filter frame, the bottom ends of the filter frame and the arc-shaped filter screen extending into the inner cavity of the discharge trough, the top end of the filter frame extending into the side of the base plate and fixedly mounted with multiple servo motors, the output shafts of the multiple servo motors extending into the inner side of the filter frame and fixedly connected to a spiral conveyor rod via a coupling, a baffle fixedly connected to the bottom of the top of the filter frame, and a return pipe fixedly fitted to the bottom of the storage box, the bottom end of the return pipe fixedly fitted into the inner cavity of the filter box.

[0008] As a preferred embodiment of this utility model, the receiving mechanism includes support blocks fixedly connected to both sides of the inner cavity of the storage box, and a filter basket is placed on the top surface of the two support blocks, with the side of the filter basket fitting against the inner wall of the storage box.

[0009] As a preferred embodiment of this utility model, the extrusion mechanism includes an electric telescopic rod fixedly installed on the top surface of the storage box. The output end of the electric telescopic rod extends into the inner cavity of the storage box and is fixedly connected to an extrusion plate. The outer side of the extrusion plate is flush with the inner wall of the filter basket.

[0010] As a preferred embodiment of this utility model, an inlet pipe is fixedly sleeved on the top surface of the filter box, and a drain valve is fixedly installed on the side of the bottom end of the filter box.

[0011] As a preferred embodiment of this utility model, a dosing tube is fixedly sleeved on the side of the filter box, and a tube plug is sleeved on the top end of the dosing tube.

[0012] As a preferred embodiment of this utility model, the storage box is hinged to a sealed door on the outside.

[0013] In a preferred embodiment of this utility model, the two sides of the filter frame are fitted to the inner wall of the filter box, and the outer side of the spiral conveying rod is fitted to the inner wall of the arc-shaped filter screen.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) In this utility model, the impurities in the landfill leachate are filtered by the arc-shaped filter screen inside the filter frame. The servo motor drives the spiral conveyor rod to rotate, and the impurities filtered by the arc-shaped filter screen move downward through the spiral conveyor rod, so that the impurities can smoothly enter the inner cavity of the filter basket for collection. The electric telescopic rod drives the extrusion plate to move up and down. The extrusion plate extends into the inner cavity of the filter basket to extrude the impurities, squeezing out the residual leachate in the impurities. The residual leachate is then introduced into the inner cavity of the filter box through the return pipe, so that the leachate and impurities are completely separated.

[0016] (2) In this utility model, the arc-shaped filter screen inside the filter frame is inserted into the inner cavity of the filter box by the combined use of the insertion groove, the impurity discharge groove, the filter frame and the baffle. At the same time, the filter frame can be pulled out from the inner cavity of the filter box to clean the impurities blocked in the filter holes of the arc-shaped filter screen, so as to ensure the effect of the arc-shaped filter screen in pre-filtering the leachate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the present invention;

[0019] Figure 3 This is a cross-sectional schematic diagram of the filter box of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the filter frame of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the filter basket of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Base plate; 2. Filter box; 3. Storage box; 4. Receiving mechanism; 5. Insertion slot; 6. Impurity discharge slot; 7. Return pipe; 8. Filter frame; 9. Arc-shaped filter screen; 10. Servo motor; 11. Spiral conveyor rod; 12. Baffle; 13. Support block; 14. Filter basket; 15. Electric telescopic rod; 16. Extrusion plate; 17. Extrusion mechanism; 18. Sealing door; 19. Liquid inlet pipe; 20. Liquid drain valve; 21. Dosing pipe; 22. Pipe plug. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1:

[0028] Please see Figure 1-5 A pre-filtration device for treating landfill leachate includes a base plate 1, a filter box 2 fixedly connected to the top surface of the base plate 1, a storage box 3 fixedly connected to the side of the filter box 2, a squeezing mechanism 17 on the storage box 3, a receiving mechanism 4 inside the storage box 3, an insertion groove 5 on the side of the filter box 2, a waste discharge groove 6 on one side of the storage box 3, a filter frame 8 fitted inside the insertion groove 5, and an arc-shaped filter screen 9 fixedly fitted inside the filter frame 8. The bottom ends of the frame 8 and the arc-shaped filter screen 9 extend into the inner cavity of the discharge trough 6. The top end of the filter frame 8 extends into the side of the base plate 1 and is fixedly installed with multiple servo motors 10. The output shafts of the multiple servo motors 10 all extend into the inner side of the filter frame 8 and are fixedly connected to the spiral conveyor rod 11 through a coupling. A baffle 12 is fixedly connected to the bottom of the top end of the filter frame 8. A return pipe 7 is fixedly sleeved at the bottom of the storage box 3. The bottom end of the return pipe 7 is fixedly sleeved into the inner cavity of the filter box 2.

[0029] In this embodiment, the inner side of the baffle 12 is in contact with the side of the filter box 2. The baffle 12 is used to limit the filter frame 8 inserted into the inner cavity of the filter box 2. In addition, the controller on the filter box 2 controls the servo motor 10 and the electric telescopic rod 15, and uses the power supply of the external device to power them. This is the prior art and will not be described in detail.

[0030] For details, please refer to Figure 2 , Figure 3 and Figure 5 The receiving mechanism 4 includes support blocks 13 fixedly connected to both sides of the inner cavity of the storage box 3. A filter basket 14 is placed on the top surface of the two support blocks 13, and the side of the filter basket 14 is in contact with the inner wall of the storage box 3.

[0031] In this embodiment, the filter basket 14 is used to catch the filtered impurities, the support block 13 is used to support the filter basket 14, and the inner wall of the storage box 3 is used to limit the position of the filter basket 14.

[0032] For details, please refer to Figure 1 and Figure 2 The extrusion mechanism 17 includes an electric telescopic rod 15 fixedly installed on the top surface of the storage box 3. The output end of the electric telescopic rod 15 extends into the inner cavity of the storage box 3 and is fixedly connected to an extrusion plate 16. The outer side of the extrusion plate 16 is flush with the inner wall of the filter basket 14.

[0033] In this embodiment, the electric telescopic rod 15 is used to drive the extrusion plate 16 to move downward, so that the extrusion plate 16 can squeeze the impurities in the inner cavity of the filter basket 14, so that the residual leachate in the impurities is squeezed out and filtered down.

[0034] For details, please refer to Figure 1 and Figure 2 The top surface of the filter box 2 is fixedly fitted with an inlet pipe 19, and the bottom side of the filter box 2 is fixedly installed with a drain valve 20.

[0035] In this embodiment, the leachate to be treated is introduced into the inner cavity of the filter box 2 through the inlet pipe 19, and the treated leachate is discharged from the drain valve 20.

[0036] For details, please refer to Figure 1 A dosing tube 21 is fixedly sleeved on the side of the filter box 2, and a tube plug 22 is sleeved on the top end of the dosing tube 21.

[0037] In this embodiment, the agent for treating landfill leachate is placed into the bottom of the inner cavity of the filter box 2 through the dosing pipe 21.

[0038] For details, please refer to Figure 1 The storage box 3 has a hinged sealing door 18 on the outside.

[0039] In this embodiment, the filter basket 14 is removed and placed by opening the sealing door 18 in order to clean the impurities collected in the inner cavity of the filter basket 14.

[0040] For details, please refer to Figure 2 and Figure 4 The two sides of the filter frame 8 are in contact with the inner wall of the filter box 2, and the outer side of the spiral conveyor rod 11 is in contact with the inner wall of the arc-shaped filter screen 9.

[0041] In this embodiment, the stability of the filter frame 8 inserted into the inner cavity of the filter box 2 is ensured, and the spiral conveyor rod 11 is able to scrape and convey the impurities filtered out from the inner cavity of the arc-shaped filter screen 9.

[0042] Working principle: In use, the leachate to be treated is first introduced into the inner cavity of the filter box 2 through the inlet pipe 19, causing the leachate to fall onto the arc-shaped filter screen 9. The filter holes on the arc-shaped filter screen 9 filter the impurities in the leachate, causing the leachate to fall to the bottom of the inner cavity of the filter box 2. Then, the servo motor 10 is started to drive the screw conveyor 11 to rotate. The screw conveyor 11 drives the impurities in the inner cavity of the arc-shaped filter screen 9 to move, causing the impurities to enter the inner cavity of the collection box 3 from the discharge trough 6 and fall into the inner cavity of the filter basket 14. Then, the electric telescopic rod 15 is started to move the squeezing plate 16 up and down. The cycle causes the extrusion plate 16 to extend into the inner cavity of the filter basket 14 to extrude impurities, squeezing out residual leachate from the impurities and allowing the leachate to enter the inner cavity of the collection box 3. The leachate in the inner cavity of the collection box 3 is then introduced into the inner cavity of the filter box 2 through the return pipe 7. Finally, the sealing door 18 is opened to remove the filter basket 14 from the inner cavity of the collection box 3 to clean the impurities in the inner cavity of the filter basket 14. In addition, the filter frame 8 is pulled out from the side of the filter box 2 to remove the filter frame 8, the arc-shaped filter screen 9, and the spiral conveyor rod 11 to clean the impurities clogging the filter holes of the arc-shaped filter screen 9.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A waste leachate treatment pre-filtering device comprising a base plate (1), characterized in that: A filter box (2) is fixedly connected to the top surface of the base plate (1), and a storage box (3) is fixedly connected to the side of the filter box (2). A pressing mechanism (17) is provided on the storage box (3), and a receiving mechanism (4) is provided in the inner cavity of the storage box (3). An insertion slot (5) is provided on the side of the filter box (2), and a waste discharge slot (6) is provided on one side of the storage box (3). A filter frame (8) is fitted inside the insertion slot (5), and an arc-shaped filter screen (9) is fixedly fitted inside the filter frame (8). The filter frame (8) and the arc-shaped filter screen (9) are connected to each other. The bottom end of the shaped filter screen (9) extends into the inner cavity of the waste discharge groove (6). The top end of the filter frame (8) extends into the side of the base plate (1) and is fixedly installed with multiple servo motors (10). The output shafts of the multiple servo motors (10) extend into the inner side of the filter frame (8) and are fixedly connected to the spiral feed rod (11) through a coupling. The bottom of the top end of the filter frame (8) is fixedly connected with a baffle (12). The bottom of the storage box (3) is fixedly sleeved with a return pipe (7). The bottom end of the return pipe (7) is fixedly sleeved into the inner cavity of the filter box (2).

2. The waste leachate treatment pre-filter device according to claim 1, characterized in that: The receiving mechanism (4) includes support blocks (13) fixedly connected to both sides of the inner cavity of the storage box (3). A filter basket (14) is placed on the top surface of the two support blocks (13), and the side of the filter basket (14) is in contact with the inner wall of the storage box (3).

3. The waste leachate treatment prefiltering device according to claim 2, characterized in that: The extrusion mechanism (17) includes an electric telescopic rod (15) fixedly installed on the top surface of the storage box (3). The output end of the electric telescopic rod (15) extends into the inner cavity of the storage box (3) and is fixedly connected to an extrusion plate (16). The outer side of the extrusion plate (16) is flush with the inner wall of the filter basket (14).

4. The waste leachate treatment prefilter device according to claim 1, characterized in that: The top surface of the filter box (2) is fixedly fitted with an inlet pipe (19), and the bottom side of the filter box (2) is fixedly installed with a drain valve (20).

5. The waste leachate treatment prefilter device according to claim 1, characterized in that: A dosing tube (21) is fixedly sleeved on the side of the filter box (2), and a tube plug (22) is sleeved on the top end of the dosing tube (21).

6. The waste leachate treatment prefilter device according to claim 1, characterized in that: The storage box (3) is hinged to a sealed door (18) on the outside.

7. The waste leachate treatment prefilter device according to claim 1, characterized in that: The two sides of the filter frame (8) are in contact with the inner wall of the filter box (2), and the outer side of the spiral conveyor rod (11) is in contact with the inner wall of the arc-shaped filter screen (9).

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