A portable multi-stage filtration device for wastewater treatment

Abstract

This utility model belongs to the technical field of sewage treatment equipment and discloses a portable multi-stage filtration device for sewage treatment. It includes a hollow outer shell containing a filtration chamber and a purified water chamber. The outer wall of the filtration chamber has a water inlet, and the interior contains a multi-stage detachable filtration assembly, including a coarse filter screen, a medium filter screen, and a high-efficiency filter element. The purified water chamber contains a guide tube with a quick-connect connector. Sewage is discharged through the guide tube after multi-stage filtration. This device is suitable for sewage treatment and reuse at construction sites. This filtration device aims to solve the problems of poor portability, low filtration efficiency, difficult maintenance, and weak compatibility of filtration devices used at construction sites. It has advantages such as compact structure, portability, lightweight design, and easy disassembly and cleaning, effectively improving water quality, extending equipment lifespan, and meeting environmental protection and construction water requirements.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment equipment, specifically relating to a portable multi-stage filtration device for sewage treatment. Background Technology

[0002] Construction sites for buildings, municipal works, and water conservancy projects often generate large amounts of wastewater due to surface runoff, groundwater seepage, construction drainage, or heavy rain. This wastewater contains impurities such as mud, gravel, plastic, and oil. If it is discharged or reused directly without treatment, it will cause multiple problems: First, it can easily clog water pumps, damage related equipment, and increase construction costs; second, it may cause secondary pollution of soil and water bodies, violating environmental protection regulations; and third, it wastes water resources, especially since most construction sites are located in remote areas with harsh water access conditions, resulting in a serious shortage of construction water.

[0003] To address the aforementioned issues, three main wastewater treatment methods are currently employed at construction sites, but all have significant limitations: 1. Natural sedimentation in sedimentation tanks: This requires advance planning and excavation, occupies a large area, has a long construction period, cannot be adapted to temporary and highly mobile construction scenarios, and has low treatment efficiency, making it difficult to achieve immediate sewage discharge and reuse. 2. Fixed or large mobile sewage treatment equipment: High cost, large size, heavy weight, inconvenient to move and operate, difficult to maintain, and cannot adapt to changing construction environments and frequent relocation requirements. 3. Install a simple filter screen or filter basket at the water pump inlet: Although the structure is simple and the cost is low, the filtration level is single and can only intercept large particles of impurities. It is not effective in removing fine suspended solids and mud. It is also easy to clog and requires frequent cleaning and replacement. Most of them cannot be disassembled for cleaning, have low strength and are easily damaged, and have poor reusability.

[0004] Therefore, there is an urgent need for a miniaturized filtration device that is simple in structure, portable and efficient, quick to install, supports multi-stage filtration, and is reusable, in order to meet the complex and ever-changing wastewater treatment needs at construction sites, achieve efficient wastewater filtration and reuse, and reduce the risk of equipment damage. Utility Model Content

[0005] The purpose of this utility model is to provide a portable multi-stage filtration device for sewage treatment, so as to solve the problems of poor portability, low filtration efficiency, difficult maintenance and weak adaptability of existing sewage treatment devices for construction sites.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A portable multi-stage filtration device for wastewater treatment includes a hollow outer shell. Inside the shell, from bottom to top, are a filtration chamber and a purified water chamber. Multiple water inlets are evenly distributed on the outer wall of the filtration chamber. The filtration chamber contains a detachable filtration assembly, which includes a coarse filter screen, a medium filter screen, and a high-efficiency filter element. The coarse and medium filter screens are installed sequentially from the outside to the inside of the filtration chamber, and the high-efficiency filter element is installed at the partition between the filtration chamber and the purified water chamber. A flow guide tube is detachably connected to the purified water chamber, and the flow guide tube is used to transport the purified water to a water intake pipe.

[0007] To further enable rapid assembly, cleaning, and maintenance of the filter assembly, the housing includes a hollow cylindrical or conical shell with an end cap detachably connected to its lower end. A mounting ring is located in the middle of the shell, and a first and second annular groove are provided on the lower end face of the mounting ring. A coarse filter screen and a medium filter screen are engaged between the mounting ring and the end cap, with their upper ends sequentially engaged within the first and second annular grooves. The lower end of the guide tube presses the high-efficiency filter element against the upper end face of the mounting ring.

[0008] To further enable rapid installation on the construction site, the guide tube is threadedly connected to the inner wall of the water purification chamber of the outer shell. The guide tube is equipped with a guide pipe, and the guide pipe is equipped with a threaded joint or plug joint for quick-release connection to the water intake pipe.

[0009] To further improve filtration efficiency and effectiveness, the water inlet is a circular hole with a diameter of 5±0.1mm, the coarse filter screen is made of stainless steel with a filter mesh diameter of 50-80 mesh, the medium filter screen is made of stainless steel with a filter mesh diameter of 100-150 mesh, and the high-efficiency filter element is a solid filter block with a filter mesh diameter of <10μm.

[0010] To ensure the structural stability of the filtration device while reducing the overall weight, the housing, end caps, and flow guide tube are all made of lightweight, corrosion-resistant, and high-strength stainless steel.

[0011] Furthermore, the outer shell has a cylindrical or conical structure.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects: 1. The filtration device of this utility model removes large particles, medium particles and fine suspended solids step by step through the three-stage synergistic action of coarse filter screen, medium filter screen and high efficiency filter element, and performs efficient multi-stage filtration of sewage, which can effectively reduce the turbidity of the effluent and meet the requirements of non-potable reuse (sprinkling dust, concrete curing, etc.) at construction sites.

[0013] 2. The filter device of this utility model is made of lightweight, corrosion-resistant and anti-aging materials (such as stainless steel), making the whole machine weigh less than 3kg, portable and lightweight, operable by a single person, and suitable for temporary and scattered water accumulation points without the need for complicated handling equipment; it can also adapt to complex and harsh environments such as muddy and sewage corrosion at construction sites, and has a long service life.

[0014] 3. The filter device of this utility model has a simple structure, and the filter components and the outer shell are detachable, which facilitates on-site assembly, cleaning, maintenance and replacement. It can be reused multiple times, effectively reducing the cost of use and is environmentally friendly.

[0015] 4. The filter device of this utility model can be adapted to common diameter water intake pipes (such as DN50 and DN80) by setting threaded joints or plug joints on the guide pipe, making installation convenient and quick without additional modification. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 for Figure 3 Enlarged view of the structure at point A in the image; In the picture: Outer shell 1, housing 11, end cap 12, mounting protrusion ring 13, first annular groove 131, second annular groove 132, filter chamber 14, water inlet 141, purified water chamber 15; Filter assembly 2, coarse filter screen 21, medium filter screen 22, high efficiency filter element 23; 3. Flow guide tube 31. Detailed Implementation

[0017] The following detailed description illustrates the specific implementation method: Example

[0018] like Figure 1-4As shown, a portable multi-stage filtration device for wastewater treatment includes a housing 1, which comprises a hollow cylindrical or conical shell 11. An end cap 12 is threaded to the lower end of the shell 11. A mounting ring 13 is formed in the middle of the shell 11. A first annular groove 131 and a second annular groove 132 are sequentially formed from the outside to the inside on the lower end face of the mounting ring 13. A detachable filter assembly 2 is installed inside the housing 1. The filter assembly 2 includes a coarse filter screen 21, a medium filter screen 22, and a high-efficiency filter element 23. The coarse filter screen 21 and the medium filter screen 22 are snapped between the mounting ring 13 and the end cap 12, and their upper ends are sequentially snapped into the first annular groove 131 and the second annular groove 132. The high-efficiency filter element 23 is placed on the upper end face of the mounting ring 13. The coarse filter screen 21 has straight filter holes. The filter screen has a diameter of 50-80 mesh stainless steel, the middle filter screen cover 22 uses a stainless steel filter screen with a pore diameter of 100-150 mesh, and the high-efficiency filter element 23 uses a solid filter block with a pore diameter of <10μm. The high-efficiency filter element 23 divides the housing 11 from bottom to top into a filter chamber 14 and a water purification chamber 15. The outer wall of the filter chamber 14 is evenly distributed with multiple water inlet holes 141, which are circular holes with a diameter of 5±0.1mm. The inner wall of the water purification chamber 15 is threaded with a guide tube 3, and the upper end of the guide tube 3 is provided with a guide pipe 31. The guide pipe 31 is provided with a threaded joint (not shown in the figure) for quick connection to the water intake pipe. The guide pipe 31 is used to transport the purified water to the water intake pipe. The housing 11, end cap 12, and guide tube 3 are all made of lightweight, corrosion-resistant, and high-strength stainless steel.

[0019] The specific implementation of this utility model is as follows: 1. Installation: Connect the filter device to the water inlet end of the water pump intake pipe through the threaded joint at the top of the guide pipe 31, and check the sealing performance. 2. Immersion: Immerse the entire filter device in the water at the construction site (water depth ≥ 300mm), with the bottom water inlet 141 facing downwards, ensuring complete immersion without touching the bottom to avoid sucking in high concentrations of sludge; 3. Filtration: After starting the water pump, the sewage enters the filter chamber 14 through the water inlet 141 of the filter device. It first passes through the coarse filter screen 21 to remove large particles such as stones, plastic bags and branches, then passes through the medium filter screen 22 to remove medium particles such as sand, soil clumps and fibers, and finally passes through the high-efficiency filter element 23 to deeply remove fine suspended solids and colloidal particles, reducing the turbidity of the effluent and meeting the reuse standard. 4. Reuse: The filtered clean water enters the clean water chamber 15 and enters the water intake pipe through the internal guide tube 3 and guide pipe 31, and is transported to the water pump for construction purposes such as watering to reduce dust, concrete curing, and vehicle washing. 5. Maintenance: When the water output decreases or the pressure difference increases, turn off the water pump, lift the filter device out of the water, and disassemble the end cover 12, the guide tube 3, the coarse filter screen 21, the medium filter screen 22, and the high-efficiency filter element 23 in sequence. After rinsing with clean water to remove the attached impurities, reassemble the filter and it can be put into use again. After cleaning, the water output will return to the initial state.

[0020] The filtration device in this embodiment is portable, lightweight, and easy to operate. It can be installed and maintained by a single person. The turbidity of the filtered water is ≤10 NTU, which meets the requirements for concrete curing water. It effectively avoids water pump blockage and can be reused ≥50 times after cleaning, resulting in low operating costs.

[0021] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A portable multi-stage filtration device for sewage treatment, characterized by: The device includes a hollow outer shell (1), and inside the outer shell (1) are a filter chamber (14) and a water purification chamber (15) arranged sequentially from bottom to top. Multiple water inlets (141) are evenly distributed on the outer wall of the filter chamber (14). The filter chamber (14) is equipped with a detachable filter assembly (2), which includes a coarse filter screen (21), a medium filter screen (22) and a high-efficiency filter element (23). The coarse filter screen (21) and the medium filter screen (22) are installed sequentially from the outside to the inside in the filter chamber (14), and the high-efficiency filter element (23) is installed at the separation between the filter chamber (14) and the water purification chamber (15). A guide tube (3) is detachably connected inside the water purification chamber (15), and the guide tube (3) is used to transport the purified water to the water intake pipe.

2. The portable multi-stage filtration device of claim 1, wherein: The outer shell (1) includes a hollow cylindrical or conical shell (11), with an end cap (12) detachably connected to the lower end of the shell (11). A mounting protrusion (13) is provided in the middle of the shell (11). A first annular groove (131) and a second annular groove (132) are provided on the lower end surface of the mounting protrusion (13). A coarse filter screen (21) and a medium filter screen (22) are snapped between the mounting protrusion (13) and the end cap (12). The upper ends of the coarse filter screen (21) and the medium filter screen (22) are sequentially snapped into the first annular groove (131) and the second annular groove (132). The lower end of the guide tube (3) presses the high-efficiency filter element (23) against the upper end surface of the mounting protrusion (13).

3. The portable multi-stage filtration device of claim 1 or 2, wherein: The guide tube (3) is threadedly connected to the inner wall of the water purification chamber (15) of the outer shell (1). The guide tube (3) is provided with a guide pipe (31), and the guide pipe (31) is provided with a threaded joint or plug for quick connection of the water intake pipe.

4. The portable multi-stage filtration device of claim 3, wherein: The water inlet hole (141) is a circular hole with a diameter of 5±0.1mm. The coarse filter screen (21) is made of stainless steel filter screen with a filter hole diameter of 50-80 mesh. The medium filter screen (22) is made of stainless steel filter screen with a filter hole diameter of 100-150 mesh. The high-efficiency filter element (23) is a solid filter block with a filter hole diameter of <10μm.

5. The portable multi-stage filtration device of claim 2, wherein: The shell (11), end cap (12), and guide tube (3) are all made of lightweight, corrosion-resistant, and high-strength stainless steel.

6. The portable multi-stage filtration device of claim 1, wherein: The outer shell (1) has a cylindrical or conical structure.

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