A waste liquid filtration device for waste treatment

Abstract

This application relates to a waste liquid filtration device for waste treatment, belonging to the field of environmental protection equipment technology. It includes a filter cylinder with a horizontal filter screen inside. Above the filter screen is a rotating shaft driven by a stirring motor and stirring blades. A pressing cylinder is located at the upper end of the filter cylinder, with its piston rod connected to a pressure plate located directly above the stirring shaft. A feed inlet is located on the side wall of the filter cylinder, between the stirring blades and the pressure plate. The filter screen can slide and switch positions within the filter cylinder, achieving positioning through a locking block and a pull groove. The filter cylinder has a leak-proof ring and a perforated structure on its exterior, and a funnel-shaped collection pipe is connected to the bottom, with support legs equipped with casters. This device improves waste liquid filtration efficiency and solid-liquid separation effect through the synergistic action of stirring and pressing, while facilitating filter screen cleaning and replacement, enhancing the equipment's continuous operation capability and ease of operation.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to a waste liquid filtration device for waste treatment. Background Technology

[0002] In the process of urban solid waste treatment, kitchen waste and organic waste are often accompanied by a large amount of high-water-content waste liquid. If it is not separated in a timely and effective manner, it will not only increase the difficulty of subsequent treatment, but also easily cause secondary pollution and odor problems. Therefore, waste liquid filtration is a key link in the waste treatment process and is widely used in waste transfer stations, kitchen waste treatment plants and organic waste resource utilization systems.

[0003] Currently, common waste liquid filtration equipment mainly includes belt filter presses, screw extruders, and gravity screens. Belt filter presses achieve solid-liquid separation by clamping materials with a filter belt and applying pressure, but they suffer from problems such as easy clogging of the filter belt and frequent cleaning. Screw extruders use the propulsion and compression of a screw shaft to achieve dewatering, and are suitable for high-viscosity materials, but they are sensitive to fibrous impurities and are prone to clogging. Gravity screens rely on the material's own weight to pass through the screen for separation; they have a simple structure but low dewatering efficiency and are difficult to handle waste liquids with high water content or viscous texture.

[0004] The aforementioned equipment generally suffers from low filtration efficiency, inconvenient filter cleaning, and poor equipment mobility in practical applications. Especially in small-scale or temporary operation scenarios, the equipment struggles to achieve rapid deployment and continuous operation, and most devices lack pre-treatment mixing functions for materials, leading to uneven material distribution and affecting the filtration effect. Furthermore, filter replacement is cumbersome, requiring machine shutdown for disassembly, severely impacting operational efficiency. Therefore, there is an urgent need for a waste liquid filtration device that integrates mixing, filtration, and easy filter replacement and mobility to solve the technical problems of inconvenient operation and low efficiency in existing technologies. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a waste liquid filtration device for waste treatment.

[0006] This utility model provides a waste liquid filtration device for waste treatment, which adopts the following technical solution:

[0007] A waste liquid filtration device for waste treatment includes a filter cylinder, a filter screen for filtering waste liquid is provided inside the filter cylinder, the filter screen is horizontally arranged, a rotating shaft is horizontally arranged above the filter screen, the rotating shaft is provided with a plurality of stirring blades, the stirring blades are evenly arranged, a stirring motor is provided on the outside of the filter cylinder, the output shaft of the stirring motor passes through the filter cylinder and is coaxially and fixedly connected to the rotating shaft, a pressing cylinder is provided on the upper end face of the filter cylinder, the piston rod of the pressing cylinder passes through the filter cylinder and is connected to a pressure plate, the pressure plate is horizontally arranged inside the filter cylinder, the pressure plate is located directly above the rotating shaft, and a feed inlet is opened on the filter cylinder, the feed inlet is located between the rotating shaft and the pressure plate.

[0008] Preferably, a first inlet is provided on one side of the filter cylinder, and a first groove is connected above the first inlet. A second inlet is provided on the other side of the filter cylinder, and a second groove is connected below the second inlet. The first inlet and the second groove are correspondingly arranged, and the second inlet and the first groove are correspondingly arranged. The filter screen is located at the first inlet of the filter cylinder. Both ends of the filter screen are provided with locking blocks. When the filter screen is located at the first inlet, the locking blocks are located at the first inlet and the second groove of the filter cylinder, respectively. When the filter screen is located at the second inlet, the locking blocks are located at the first groove and the second inlet of the filter cylinder, respectively.

[0009] Preferably, the filter screen has through holes on its clips to facilitate user operation.

[0010] Preferably, the outer side of the filter cylinder is provided with a leak-proof ring, which is bowl-shaped and evenly distributed around the circumference. The outer side of the filter cylinder is provided with a plurality of leakage holes, which are located between the leak-proof ring and the filter cylinder.

[0011] Preferably, the lower end face of the filter cartridge is connected to a funnel-shaped collecting tube.

[0012] Preferably, the bottom end of the filter cylinder is fixedly connected to a support leg, and the lower end face of the support leg is provided with a caster wheel.

[0013] Preferably, the lower surface of the pressure plate is provided with a plurality of protrusions, which are evenly distributed along the circumference of the pressure plate.

[0014] In summary, this utility model has at least one of the following beneficial technical effects:

[0015] 1. By adopting a structure in which the stirring blades and the pressure plate work together, the waste liquid is first evenly distributed on the filter screen by stirring, and then the pressure plate is applied by the downward pressure cylinder, which realizes efficient solid-liquid separation and significantly improves filtration efficiency and dehydration effect;

[0016] 2. By adopting a sliding and switchable filter structure, the filter can be quickly replaced between the two inlets through the cooperation of the locking block and the pull groove, without disassembling the equipment. This greatly improves the convenience of filter cleaning and maintenance and ensures the continuous operation capability of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a waste liquid filtration device for waste treatment.

[0018] Figure 2 This is a cross-sectional structural diagram of a waste liquid filtration device for waste treatment.

[0019] Explanation of reference numerals in the attached drawings: 1. Filter cylinder; 11. Filter screen; 111. Locking block; 112. Through hole; 12. Rotating shaft; 13. Stirring blade; 14. Stirring motor; 15. Pressing cylinder; 16. Pressure plate; 17. Feed inlet; 18. Collection pipe; 19. Support leg; 191. Caster wheel; 2. Leak-proof ring; 21. Leak hole; 22. First inlet; 23. Second inlet; 24. First groove; 25. Second groove. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to all the accompanying drawings.

[0021] This utility model discloses a waste liquid filtration device for waste treatment.

[0022] Reference Figure 1 and Figure 2 A waste liquid filtration device for waste treatment includes a cylindrical filter cylinder 1. A filter screen 11 is horizontally arranged inside the filter cylinder 1 to intercept solid impurities while allowing waste liquid to pass through. A rotating shaft 12 is horizontally positioned above the filter screen 11, and stirring blades 13 are mounted on the rotating shaft 12. The stirring blades 13 are arc-shaped, with their curvature aligned with the intended rotation direction of the rotating shaft 12 to enhance stirring thrust. A stirring motor 14 is fixedly mounted on the outer wall of the filter cylinder 1. The output shaft of the stirring motor 14 passes through a sealed bearing into the inner cavity of the filter cylinder 1 and is coaxially and fixedly connected to the rotating shaft 12 to achieve power transmission.

[0023] Reference Figure 1 and Figure 2 A downward pressure cylinder 15 is installed at the center of the top of the filter cartridge 1. Its piston rod passes vertically downward through the top wall and is connected to a pressure plate 16. The pressure plate 16 is set horizontally and located directly above the rotating shaft 12. The two maintain a certain gap to avoid interference during operation.

[0024] Reference Figure 1 and Figure 2 The filter cylinder 1 has a feed inlet 17 on its side wall, which is located between the rotating shaft 12 and the pressure plate 16 to facilitate the input of waste liquid. The bottom of the filter cylinder 1 is connected to a funnel-shaped collection pipe 18 to guide the filtered liquid.

[0025] Reference Figure 1 and Figure 2The bottom of the filter cylinder 1 is welded with four support legs 19, each of which is equipped with a caster wheel 191 with a brake at its bottom end for easy movement and positioning of the equipment. In addition, two bowl-shaped anti-leakage rings 2 are evenly distributed around the outer wall of the filter cylinder 1, forming a cavity between the rings and the cylinder wall, and several leakage holes 21 are provided to prevent external liquid accumulation. Each end of the filter screen 11 has a locking block 111 with a through hole 112 for easy manual operation. The left and right sides of the filter cylinder 1 are respectively provided with a first inlet 22 and a second inlet 23. The first inlet 22 is connected to a first groove 24 above, and the second inlet 23 is connected to a second groove 25 below. The first inlet 22 is opposite to the second groove 25, and the second inlet 23 is opposite to the first groove 24. When the filter 11 is placed in the first inlet 22, the two end blocks 111 are respectively embedded in the first inlet 22 and the second pull groove 25 to achieve positioning; when it slides in the opposite direction to the second inlet 23, the blocks 111 are embedded in the first pull groove 24 and the second inlet 23 to achieve cleaning and replacement of the filter 11.

[0026] The implementation principle of the waste liquid filtration device for waste treatment according to this utility model embodiment is as follows: During operation, waste liquid enters the filter cylinder 1 through the feed inlet 17 and falls onto the filter screen 11. The stirring motor 14 is started, driving the rotating shaft 12 and stirring blades 13 to rotate, stirring the waste liquid, making it evenly distributed and initially breaking up clumps, thus improving filtration efficiency. After stirring is completed, the lowering cylinder 15 is activated, pushing the pressure plate 16 downward, applying pressure to the material on the filter screen 11, forcing the liquid to pass through the filter screen 11 into the lower space of the filter cylinder 1, and then flowing into the cavity of the anti-leakage ring 2 through the side wall leakage holes 21 before being discharged, or directly guided from the bottom to the funnel-shaped collection pipe 18 for centralized collection. Solid residue remains above the filter screen 11. After the filtration is completed, the pressure plate 16 rises back, and the stirring blades 13 can rotate slightly in the opposite direction to loosen the material, making it easy to clean. When the filter screen 11 becomes clogged, a tool can be inserted into the through hole 112 of the locking block 111 to push the filter screen 11 along the inner slide rail from the first inlet 22 to the second inlet 23, enabling quick replacement or alternating use of both sides, thus improving maintenance efficiency. The entire device can be flexibly deployed at different work points with the help of casters, adapting to various working conditions.

[0027] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A waste liquid filtration device for waste treatment, comprising a filter cylinder (1), characterized in that, The filter cylinder (1) is provided with a filter screen (11) for filtering waste liquid. The filter screen (11) is set horizontally. A rotating shaft (12) is set horizontally above the filter screen (11). The rotating shaft (12) is provided with a number of stirring blades (13). The stirring blades (13) are evenly arranged. A stirring motor (14) is provided on the outside of the filter cylinder (1). The output shaft of the stirring motor (14) passes through the filter cylinder (1) and is coaxially fixedly connected to the rotating shaft (12). A pressing cylinder (15) is provided on the upper end face of the filter cylinder (1). The piston rod of the pressing cylinder (15) passes through the filter cylinder (1) and is connected to a pressure plate (16). The pressure plate (16) is set horizontally inside the filter cylinder (1) and is located directly above the rotating shaft (12). A feed inlet (17) is opened on the filter cylinder (1). The feed inlet (17) is set between the rotating shaft (12) and the pressure plate (16).

2. The waste liquid filtration device for waste treatment according to claim 1, characterized in that, The filter cylinder (1) has a first inlet (22) on one side, and a first groove (24) is connected above the first inlet (22). The filter cylinder (1) has a second inlet (23) on the other side, and a second groove (25) is connected below the second inlet (23). The first inlet (22) and the second groove (25) are respectively set, and the second inlet (23) and the first groove (24) are respectively set. The filter screen (11) is located at the first inlet (22) of the filter cylinder (1). Both ends of the filter screen (11) are provided with locking blocks (111). When the filter screen (11) is located at the first inlet (22), the locking blocks (111) are respectively located at the first inlet (22) and the second groove (25) of the filter cylinder (1). When the filter screen (11) is located at the second inlet (23), the locking blocks (111) are respectively located at the first groove (24) and the second inlet (23) of the filter cylinder (1).

3. The waste liquid filtration device for waste treatment according to claim 2, characterized in that, The filter (11) has a through hole (112) on its locking block (111) for user operation.

4. The waste liquid filtration device for waste treatment according to claim 1, characterized in that, The filter cylinder (1) is provided with a leak-proof ring (2) on the outside. The leak-proof ring (2) is bowl-shaped and is evenly arranged around the circumference. The filter cylinder (1) is provided with a number of leak holes (21) on the outside. The leak holes (21) are located between the leak-proof ring (2) and the filter cylinder (1).

5. The waste liquid filtration device for waste treatment according to claim 1, characterized in that, The lower end face of the filter cylinder (1) is connected to a funnel-shaped collecting pipe (18).

6. The waste liquid filtration device for waste treatment according to claim 1, characterized in that, The bottom end of the filter cylinder (1) is fixedly connected to a support leg (19), and the lower end face of the support leg (19) is provided with a caster wheel (191).

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