A waste liquid filtering device

Abstract

The application discloses a waste liquid filtering device and relates to the technical field of waste liquid filtering.The waste liquid filtering device comprises a machine body, a feeding mechanism and a filtering mechanism.The conveying assembly in the feeding mechanism comprises a cutting piece for cutting waste liquid to be filtered.The first driving mechanism of the filtering mechanism comprises a motor and a rotating piece connected with the output shaft of the motor.A plurality of mounting pieces are arranged on the rotating piece, and each mounting piece is further provided with a plurality of openings arranged in correspondence with each filtering piece, so that the waste liquid to be filtered is cut by the feeding mechanism, enters the filtering assembly corresponding to the feeding port, and flows through each opening and each filtering piece arranged in correspondence with the filtering assembly along the rotating rod in sequence.The rotating piece is arranged to rotate under the drive of the motor, so as to switch the filtering assembly arranged in correspondence with the feeding port.The waste liquid filtering device of the application realizes the replacement of the filtering assembly by rotating the filtering assembly through the driving mechanism, reduces the shutdown frequency of the waste liquid filtering device, and improves the working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of waste liquid filtration technology, specifically to a waste liquid filtration device. Background Technology

[0002] In existing technologies, wastewater treatment generally faces problems such as low filtration efficiency, easy clogging of filter screens, and complex maintenance. Traditional filtration equipment usually uses fixed filter components, and the filtration process is limited to a single filter layer, making it difficult to effectively separate various impurities in different wastewaters. In addition, when the solid particles in the wastewater are large, they can easily cause filter clogging. Some devices are equipped with automatic filter cleaning systems or designed with filter screen structures that are easy to disassemble quickly.

[0003] However, when faced with the problem of filter clogging, these devices inevitably need to be temporarily shut down for necessary maintenance. This downtime maintenance not only interrupts the continuous operation of the equipment, but also directly reduces the overall work efficiency, causing unnecessary delays in production or experimental processes, and affecting the filtration speed and equipment lifespan. Utility Model Content

[0004] One objective of this invention is to provide a waste liquid filtration device that solves the technical problem that existing waste liquid filtration devices are prone to clogging during use, and that clogging requires shutdown for maintenance, leading to reduced work efficiency.

[0005] Another objective of this invention is to improve the purification effect of waste liquid filtration devices.

[0006] According to the purpose of this utility model, this utility model provides a waste liquid filtration device, comprising:

[0007] The machine body has a first receiving cavity and a second receiving cavity located at the bottom of the first receiving cavity. A connection port is provided between the first receiving cavity and the second receiving cavity. The machine body also includes a feed port located at the top of the first receiving cavity and a discharge port located at the bottom of the second receiving cavity.

[0008] A feeding mechanism is located at the top of the machine body and is arranged corresponding to the feeding port. The feeding mechanism is provided with a conveying component, which includes a cutting component for cutting the waste to be filtered.

[0009] A filtration mechanism is located within the first receiving cavity. The filtration mechanism includes a first driving mechanism and at least two sets of filtration components. The first driving mechanism includes a motor and a rotating component connected to its output shaft. The rotating component is provided with multiple mounting components, which are arranged at intervals along the axial direction of the rotating component. Each mounting component is equipped with one filter element from each set of filtration components. Each mounting component is also provided with several openings corresponding to each filter element, so that the waste liquid to be filtered enters the filtration component corresponding to the inlet through the inlet after being cut by the feeding mechanism, and flows sequentially along the axial direction of the rotating rod through each opening and each filter element corresponding to the filtration component. The rotating component is configured to rotate under the drive of the motor to switch the filtration component corresponding to the inlet.

[0010] Optionally, the filter element further includes:

[0011] The filter cartridge is located at the bottom of the corresponding mounting component;

[0012] A filter medium is detachably installed at the bottom of the filter cylinder, and the filter medium is any one of a filter screen, a filter membrane, or an activated carbon filter plate. Optionally, each set of the filter assembly includes a first filter element, a second filter element, and a third filter element arranged sequentially along the flow direction of the waste liquid to be filtered, wherein the first filter element is the filter screen, the second filter element is the filter membrane, and the third filter element is the activated carbon filter plate.

[0013] Optionally, the machine body is further provided with a guide groove arranged circumferentially, and the mounting component near the feed inlet further includes:

[0014] At least two guide members are located on the side wall of the mounting member, the guide members are configured to protrude from the side wall of the mounting member toward the body, and one end of the guide member is configured to cooperate with the guide groove to connect the mounting member and the body.

[0015] Optionally, the guide further includes:

[0016] A guide wheel is located at the end of the guide member facing the machine body.

[0017] Optionally, the waste liquid filtration device further includes:

[0018] The processing mechanism is located below the filtration mechanism. The processing mechanism includes a second receiving cavity and a stirring element located in the second receiving cavity, such that the stirring element mixes the waste liquid to be filtered with the processing solution as it flows sequentially through the third filter element and the connection port.

[0019] Optionally, the second receiving cavity includes a variable cross-section region at the bottom, the sidewalls of which form a shape that gradually expands upward from the discharge port.

[0020] Optionally, the feeding mechanism includes a cutting area and a conveying area located below the cutting area. The sidewalls of the cutting area extend vertically, and the sidewalls of the conveying area are configured to gradually expand from the bottom upwards. The cutting blade is located in the cutting area, and the conveying assembly further includes:

[0021] A helical blade is located in the conveying area, and the diameter of the helical blade is configured to gradually decrease along the conveying direction of the waste to be filtered.

[0022] Optionally, the feeding mechanism further includes:

[0023] A scraper, the scraper being configured to abut against the sidewall of the cutting area and the sidewall of the conveying area.

[0024] This invention features multiple rotatable filter components inside the machine body. After being cut and processed, the waste liquid to be filtered flows sequentially through multiple filter elements of the same filter assembly, removing impurities of different particle sizes step by step. This effectively improves filtration accuracy and efficiency. At the same time, by driving the rotating parts to rotate, different filter components can be switched, avoiding the clogging problem of a single filter component. This reduces the number of times the waste liquid filtration device has to stop due to filter residue clogging, extends its service life, and improves the continuous working capacity of the waste liquid filtration device, thereby achieving efficient separation and treatment of filter residue in the waste liquid.

[0025] Furthermore, by sequentially arranging a filter screen, a filter membrane, and an activated carbon filter plate in each group of filter components, this invention enables graded filtration, thereby achieving multiple treatment effects that combine solid-liquid separation with adsorption purification, effectively improving the purification level and filtration quality of waste liquid.

[0026] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0027] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0028] Figure 1 This is a schematic structural diagram of a waste liquid filtration device according to an embodiment of the present invention;

[0029] Figure 2This is a schematic cross-sectional view of a waste liquid filtration device according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic structural diagram of a filtering mechanism according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic structural diagram of a feeding mechanism according to an embodiment of the present utility model.

[0032] Figure label:

[0033] 100-Waste liquid filtration device, 10-Main body, 11-First receiving cavity, 12-Second receiving cavity, 121-Variable cross-section area, 13-Connecting port, 14-Inlet, 15-Outlet, 20-Feeding mechanism, 21-Conveying assembly, 211-Cutting component, 22-Cutting area, 23-Conveying area, 212-Spiral blade, 24-Scraper, 30-Filtration mechanism, 31-First drive mechanism, 32-Filtration assembly, 311-Motor, 312-Rotating component, 313-Mounting component, 314-Opening, 321-First filter component, 322-Second filter component, 323-Third filter component, 16-Guide groove, 315-Guide component, 316-Guide wheel, 40-Processing mechanism, 41-Agitator. Detailed Implementation

[0034] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0036] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] Figure 1 This is a schematic structural diagram of a waste liquid filtration device according to an embodiment of the present invention. Figure 2 This is a schematic cross-sectional view of a waste liquid filtration device according to an embodiment of the present invention. Figure 3 This is a schematic structural diagram of a filtering mechanism according to an embodiment of the present invention. Figure 4 This is a schematic structural diagram of a feeding mechanism according to an embodiment of the present utility model.

[0039] like Figure 2 As shown, this utility model provides a waste liquid filtration device 100 for filtering waste liquid containing filter residue. The waste liquid filtration device 100 includes a body 10, a feeding mechanism 20, and a filtering mechanism 30 (see reference). Figure 1 The machine body 10 has a first receiving cavity 11 and a second receiving cavity 12 located at the bottom of the first receiving cavity 11. A connection port 13 is provided between the first receiving cavity 11 and the second receiving cavity 12. The machine body 10 also includes a feed inlet 14 located at the top of the first receiving cavity 11 and a discharge outlet 15 located at the bottom of the second receiving cavity 12. A feeding mechanism 20 is located at the top of the machine body 10 and is correspondingly arranged with the feed inlet 14. The feeding mechanism 20 is provided with a conveying assembly 21. The conveying assembly 21 includes a cutting piece 211 for cutting the waste to be filtered (see reference). Figure 4The filtration mechanism 30 is located in the first receiving cavity 11. The filtration mechanism 30 includes a first drive mechanism 31 and at least two sets of filter components 32. The first drive mechanism 31 includes a motor 311 and a rotating component 312 connected to its output shaft. The rotating component 312 is provided with a plurality of mounting components 313. The mounting components 313 are arranged at intervals along the axial direction of the rotating component 312, and each mounting component 313 is equipped with one filter element of each set of filter components 32. Each mounting component 313 is also provided with a plurality of openings 314 corresponding to each filter element, so that the waste liquid to be filtered enters the filter component 32 corresponding to the inlet 14 through the inlet 14 after being cut by the feeding mechanism 20, and flows sequentially along the axial direction of the rotating rod through each opening 314 and each filter element corresponding to the filter component 32. The rotating component 312 is configured to rotate under the drive of the motor 311 to switch the filter component 32 corresponding to the inlet 14. Here, there are two sets of filter components 32, that is, each mounting piece 313 is provided with two openings 314 corresponding to the filter components in the filter component 32, and the top of the first receiving cavity 11 is provided with a feed port 14 corresponding to the connection port 13 at the top of the second receiving cavity 12.

[0040] In this embodiment, by setting multiple rotatable filter components 32 inside the machine body 10, the waste liquid to be filtered flows sequentially through multiple filter elements of the same filter component 32 after cutting and processing, removing impurities of different particle sizes step by step, effectively improving filtration accuracy and efficiency. At the same time, by driving the rotating component 312 to rotate, different filter components 32 can be switched, avoiding the clogging problem of a single filter component 32, reducing the number of times the waste liquid filtration device 100 stops due to filter residue clogging, extending its service life and improving the continuous working capacity of the waste liquid filtration device 100, thereby achieving efficient separation and treatment of filter residue in the waste liquid.

[0041] In a further embodiment, the filter element also includes a filter cartridge and a filter medium detachably mounted at the bottom of the filter cartridge. The filter cartridge is located at the bottom of the corresponding mounting component 313, and the filter medium is any one of a filter screen, a filter membrane, or an activated carbon filter plate. By configuring the filter element to include a filter cartridge and a filter medium detachably mounted at its bottom, the filter assembly 32 can be modularized and easily replaced. This allows for flexible selection of any one of the filter screen, filter membrane, or activated carbon filter plate under different treatment requirements, facilitating maintenance and cleaning, reducing operating costs, and improving filtration efficiency and system adaptability, thereby effectively enhancing the practicality and reliability of the waste liquid filtration device 100.

[0042] like Figure 2As shown, in a further embodiment, each filter assembly 32 includes a first filter element 321, a second filter element 322, and a third filter element 323 arranged sequentially along the flow direction of the waste liquid to be filtered. The first filter element 321 is a filter screen, the second filter element 322 is a filter membrane, and the third filter element 323 is an activated carbon filter plate. By sequentially arranging the filter screen, filter membrane, and activated carbon filter plate in each filter assembly 32, staged filtration can be achieved. That is, the filter screen of the first filter element 321 is used to remove larger solid impurities, the filter membrane of the second filter element 322 is used to intercept smaller particles and fine suspended matter, and the activated carbon filter plate of the third filter element 323 further adsorbs organic pollutants and odor molecules in the waste liquid, thereby achieving a multi-treatment effect combining solid-liquid separation and adsorption purification, effectively improving the purification degree and filtration quality of the waste liquid.

[0043] like Figure 2 As shown, in a further embodiment, the machine body 10 is further provided with a circumferentially arranged guide groove 16, and the mounting member 313 near the feed inlet 14 further includes at least two guide members 315. The guide members 315 are located on the side wall of the mounting member 313 and are configured to protrude from the mounting member 313 toward the side wall of the machine body 10. One end of the guide member 315 is configured to cooperate with the guide groove 16 to connect the mounting member 313 and the machine body 10. In this embodiment, by providing a circumferentially extending guide groove 16 on the machine body 10 and providing multiple guide members 315 that cooperate with the guide groove 16 on the mounting member 313 near the feed inlet 14, the radial sway of the mounting member 313 during rotation can be effectively limited, improving its operational stability and coaxiality, preventing the filter assembly 32 from shifting or jamming during rotation, ensuring the continuity and reliability of the filtration process, and also facilitating the installation and replacement of the filter assembly 32, thereby improving the structural strength and service life of the overall device.

[0044] like Figure 3 As shown, in a further embodiment, the guide member 315 further includes a guide wheel 316, which is disposed at the end of the guide member 315 facing the body 10. In this embodiment, by providing the guide wheel 316 to the guide member 315 and positioning the guide wheel 316 at the end of the guide member 315 facing the body 10, the frictional resistance of the mounting member 313 during rotation can be significantly reduced through the rolling engagement between the guide wheel 316 and the guide groove 16 of the body 10. This improves rotational flexibility and transmission efficiency, avoids jamming or wear, and thus enables smooth and efficient switching of the filter assembly 32, improving the reliability and service life of the waste liquid filtration device 100.

[0045] like Figure 3As shown, in a further embodiment, the filter element has a cylindrical structure, which increases the filtration area, allowing for a larger contact area between the waste liquid and the filter element as it flows through, thereby improving filtration efficiency. Simultaneously, the cylindrical structure facilitates uniform flow of waste liquid from the outside to the inside or from the inside to the outside, helping to reduce clogging and extend the service life of the filter element. Furthermore, the cylindrical structure also facilitates the disassembly and replacement of the filter element, improving the maintenance convenience and operational continuity of the waste liquid filtration device 100. In other embodiments, the filter element may also have a hexahedral structure.

[0046] like Figure 2 As shown, in a further embodiment, the waste liquid filtration device 100 further includes a processing mechanism 40 located below the filtration mechanism 30. The processing mechanism 40 includes a second receiving cavity 12 and a stirring element 41 located within the second receiving cavity 12, so that the stirring element 41 mixes the waste liquid to be filtered, which flows sequentially through the third filter element 323 and the connection port 13, with the treatment solution. In this embodiment, the waste liquid filtration device 100 is provided with a processing mechanism 40 located below the filtration mechanism 30, and the processing mechanism 40 includes a second receiving cavity 12 and a stirring element 41 disposed therein. This allows the waste liquid to be fully mixed with a preset treatment solution after passing through three stages of filtration and flowing into the second receiving cavity 12, achieving further chemical reaction, neutralization, or adsorption treatment. The processing mechanism 40 not only improves the deep treatment capability of the waste liquid but also enhances the adaptability and treatment effect of the waste liquid filtration device 100 to different types of waste liquid, helping to improve the quality of the effluent and meet the requirements of environmental protection discharge or resource recycling. Here, the processing mechanism 40 also includes a second driving mechanism, and the output shaft of the second driving mechanism is connected to the stirring member 41 so that the second driving member drives the stirring member 41 to rotate. The processing mechanism 40 also includes a processing solution inlet located in the second receiving cavity 12 for conveying the processing solution into the second receiving cavity 12.

[0047] like Figure 2 As shown, in a further embodiment, the second receiving cavity 12 includes a variable cross-section region 121 located at the bottom. The sidewalls of the variable cross-section region 121 form a shape that gradually expands upward from the discharge port 15, which can effectively slow down the flow rate of the waste liquid in the second receiving cavity 12, allowing the agitator 41 to come into more thorough contact with and mix with the waste liquid during the agitation process, thereby improving the mixing uniformity and reaction efficiency. At the same time, the variable cross-section region 121 helps to reduce bottom sedimentation, facilitates waste residue settling and subsequent discharge, and improves the self-cleaning ability and operational stability of the treatment mechanism 40.

[0048] like Figure 2As shown, in a further embodiment, the feeding mechanism 20 includes a cutting area 22 and a conveying area 23 located below the cutting area 22. The sidewall of the cutting area 22 extends vertically, and the sidewall of the conveying area 23 is configured to gradually expand from the bottom upward. The cutting blade is located in the cutting area 22. The conveying assembly 21 also includes a spiral blade 212 located in the conveying area 23. The spiral blade 212 is configured such that its diameter gradually decreases along the conveying direction of the waste to be filtered (see reference). Figure 4 In this embodiment, by configuring the feeding mechanism 20 to include a cutting area 22 and a conveying area 23 located below it, that is, the sidewall of the cutting area 22 is arranged vertically, which is beneficial to concentrate waste and facilitate efficient cutting by the cutting blade. The sidewall of the conveying area 23 gradually expands from bottom to top, which can guide the waste to flow smoothly into the filter structure below, reducing accumulation and blockage. The spiral blade 212 is located in the conveying area 23, and its diameter gradually decreases along the waste conveying direction, which can gradually compress the waste during the conveying process, improve the conveying efficiency, and achieve stable and continuous feeding, which helps to improve the distribution of waste before filtration, improve the overall treatment effect and the stability of equipment operation. Here, the feeding mechanism 20 also includes a third driving mechanism, which includes a rotating rod connected to the cutting element 211 and the spiral blade 212 and a driving element that drives the rotating rod to rotate, so that the driving element drives the rotating rod to rotate, thereby driving the cutting blade to rotate and cut the waste liquid filter residue, and the spiral blade 212 conveys the waste liquid to be filtered into the filter mechanism 30.

[0049] like Figure 4 As shown, in a further embodiment, the feeding mechanism 20 also includes a scraper 24, which is configured to abut against the sidewalls of the cutting area 22 and the conveying area 23. This scraper 24 can effectively remove waste material adhering to the sidewalls during the cutting and conveying process, prevent waste material from accumulating or sticking, reduce the risk of blockage, and ensure unobstructed feeding path. At the same time, it helps to maintain the cleanliness of the cutting and conveying areas 23, improve feeding efficiency and equipment operation stability, and extend the service life of the device.

[0050] In this embodiment, the working principle of the waste liquid filtration device 100 is as follows: The waste liquid with filter residue, i.e., the waste liquid to be filtered, is first fed into the device by the feeding mechanism 20. After being chopped by the cutting blade, the waste liquid flows down along the side wall of the vertically set cutting area 22 with the assistance of the scraper 24, and enters the conveying area 23, which gradually expands at the bottom. Under the push of the spiral blades 212 with gradually decreasing diameter, it is evenly conveyed to the feed port 14. Then, the waste liquid enters the filtration mechanism 30 located in the first receiving cavity 11. The waste liquid to be filtered passes through the filtration path composed of filter screen, filter membrane and activated carbon filter plate in each group of filter components 32 in sequence to achieve multi-stage filtration. The filtered waste liquid enters the second receiving cavity 12 through the connection port 13, where it is fully mixed with the added treatment solution by the stirring element 41 for further purification. The variable cross-section area 121 set at the bottom can guide the waste liquid to diffuse evenly upward to the discharge port 15, improve the discharge efficiency, and finally achieve efficient filtration and treatment of the waste liquid. Furthermore, when the filter assembly 32 corresponding to the feed inlet 14 becomes clogged, the motor 311 in the filter mechanism 30 drives the rotating component 312 to rotate, which in turn drives the multiple mounting components 313 spaced along the axial direction to rotate. The guide component 315 and guide wheel 316 on the mounting component 313 cooperate with the guide groove 16 on the inner wall of the machine body 10 to realize the replacement of the filter assembly 32, thereby reducing the number of shutdowns of the waste liquid filtration device 100 and improving the filtration efficiency.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A waste liquid filtration device, characterized in that, include: The machine body has a first receiving cavity and a second receiving cavity located at the bottom of the first receiving cavity. A connection port is provided between the first receiving cavity and the second receiving cavity. The machine body also includes a feed port located at the top of the first receiving cavity and a discharge port located at the bottom of the second receiving cavity. A feeding mechanism is located at the top of the machine body and is arranged corresponding to the feeding port. The feeding mechanism is provided with a conveying component, which includes a cutting component for cutting the waste to be filtered. A filtration mechanism is located within the first receiving cavity. The filtration mechanism includes a first driving mechanism and at least two sets of filtration components. The first driving mechanism includes a motor and a rotating component connected to its output shaft. The rotating component is provided with multiple mounting components, which are arranged at intervals along the axial direction of the rotating component. Each mounting component is equipped with one filter element from each set of filtration components. Each mounting component is also provided with several openings corresponding to each filter element, so that the waste liquid to be filtered enters the filtration component corresponding to the inlet through the inlet after being cut by the feeding mechanism, and flows sequentially along the axial direction of the rotating rod through each opening and each filter element corresponding to the filtration component. The rotating component is configured to rotate under the drive of the motor to switch the filtration component corresponding to the inlet.

2. The waste liquid filtration device according to claim 1, characterized in that, The filter element also includes: The filter cartridge is located at the bottom of the corresponding mounting component; The filter medium is detachably installed at the bottom of the filter cylinder, and the filter medium is any one of a filter screen, a filter membrane, or an activated carbon filter plate.

3. The waste liquid filtration device according to claim 2, characterized in that, Each set of the filter components includes a first filter element, a second filter element, and a third filter element arranged sequentially along the flow direction of the waste liquid to be filtered. The first filter element is the filter screen, the second filter element is the filter membrane, and the third filter element is the activated carbon filter plate.

4. The waste liquid filtration device according to claim 3, characterized in that, The machine body is also provided with a guide groove arranged circumferentially, and the mounting component near the feed inlet further includes: At least two guide members are located on the side wall of the mounting member, the guide members are configured to protrude from the side wall of the mounting member toward the body, and one end of the guide member is configured to cooperate with the guide groove to connect the mounting member and the body.

5. The waste liquid filtration device according to claim 4, characterized in that, The guide component also includes: A guide wheel is located at the end of the guide member facing the machine body.

6. The waste liquid filtration device according to claim 5, characterized in that, Also includes: The processing mechanism is located below the filtration mechanism. The processing mechanism includes a second receiving cavity and a stirring element located in the second receiving cavity, such that the stirring element mixes the waste liquid to be filtered with the processing solution as it flows sequentially through the third filter element and the connection port.

7. The waste liquid filtration device according to claim 6, characterized in that, The second receiving cavity includes a variable cross-section region at the bottom, the sidewalls of which form a shape that gradually expands upward from the discharge port.

8. The waste liquid filtration device according to any one of claims 1-7, characterized in that, The feeding mechanism includes a cutting zone and a conveying zone located below the cutting zone. The sidewalls of the cutting zone extend vertically, and the sidewalls of the conveying zone are configured to gradually expand upward from the bottom. The cutting element is located in the cutting zone. The conveying assembly further includes: A helical blade is located in the conveying area, and the diameter of the helical blade is configured to gradually decrease along the conveying direction of the waste to be filtered.

9. The waste liquid filtration device according to claim 8, characterized in that, The feeding mechanism further includes: A scraper, the scraper being configured to abut against the sidewall of the cutting area and the sidewall of the conveying area.

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