Domestic sewage treatment device
By using an inclined transfer pipe and filter screen design, the problem of solid impurities being difficult to remove in existing domestic sewage treatment devices is solved, achieving efficient solid-liquid separation and convenient maintenance, thereby improving sewage treatment efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN GAOLI ENVIRONMENTAL PROTECTION ENG CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-15
AI Technical Summary
In existing domestic sewage treatment devices, solid impurities are difficult to remove during the treatment process, resulting in decreased filtration efficiency, easy clogging, and difficulty in cleaning, which increases treatment costs and labor intensity.
Design a filter component that uses an inclined transfer pipe in conjunction with a filter screen to ensure that wastewater impacts the filter screen at a specific angle to achieve solid-liquid separation, and allows solid impurities to be directly discharged through gravity. Combine this with multi-stage filtration and a convenient filter screen replacement mechanism.
It achieves efficient solid-liquid separation, reduces processing costs, improves the applicability and convenience of the device, simplifies the maintenance process, and avoids impurity accumulation and clogging.
Smart Images
Figure CN224236194U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filtration device technology, and in particular to a domestic sewage treatment device. Background Technology
[0002] In modern society, the effective treatment of domestic sewage is of vital importance for environmental protection and the sustainable use of water resources. Domestic sewage typically contains a large number of solid impurities, such as silt, paper scraps, and food residue. The presence of these impurities not only affects subsequent sewage treatment processes but can also pollute the environment. Therefore, achieving efficient solid-liquid separation in domestic sewage is a key step in the sewage purification process.
[0003] Currently, there are various devices on the market for the disinfection and treatment of domestic sewage. These devices generally include a filter component for solid-liquid separation. The filter component is equipped with upper and lower axial drain pipes. Sewage enters through the upper pipe, and after solid-liquid separation, the liquid is discharged through the lower pipe.
[0004] However, existing filter components have significant drawbacks in practical applications. Due to the high content of solid impurities in domestic sewage, a large amount of impurities remain inside the filter components during the filtration process. The current design flaw of filter components lies in the difficulty of removing impurities; these impurities gradually accumulate over time, not only weakening filtration efficiency but also potentially causing blockages, thereby interfering with the overall operation of the domestic sewage disinfection treatment system. Frequent replacement of filter components leads to increased treatment costs, while cleaning operations are time-consuming and labor-intensive, and the effectiveness of cleaning is difficult to guarantee.
[0005] Therefore, given the problem that filter components in existing domestic sewage disinfection treatment devices are difficult to remove, developing a new type of domestic sewage disinfection treatment device that can effectively solve this problem has significant practical significance and application value. Utility Model Content
[0006] To address the shortcomings of existing technologies, this invention proposes a domestic sewage treatment device. The device features a simple and straightforward design, achieving direct solid-liquid separation and ensuring the smooth discharge of solid impurities from the filter components. This design effectively overcomes the problem of difficulty in removing solid impurities when treating domestic sewage in existing devices, thereby improving the device's applicability.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A domestic sewage treatment device includes a filter component with two vertically oriented drain pipes connected to it. The filter component includes a mounting box with a transfer pipe connected to its upper end and a waste discharge pipe connected to its lower end. The transfer pipe includes two vertically oriented pipe bodies (I and II), wherein pipe body I is vertically oriented and connected to the upper drain pipe. The angle between the central axis of pipe body II and the horizontal plane is greater than 30° and less than 90°. A drainage groove is provided on the side of the mounting box, connecting it to the lower drain pipe. A filter screen is installed inside the drainage groove, and the projection of pipe body II along its central axis coincides with the drainage groove.
[0009] Preferably, there are multiple filter components arranged side by side, and the waste discharge pipe in the upper filter component is connected to the pipe body I in the filter component below it.
[0010] Preferably, a limiting tube is provided between the mounting box and the lower drain pipe, and the two axial ends of the limiting tube are fixedly connected to the corresponding mounting box and drain pipe, respectively.
[0011] Preferably, a positioning ring is fixedly connected to the outer end of the mounting box. The projection of the positioning ring on the vertical plane coincides with the projection of the drainage channel on the vertical plane. Furthermore, a positioning groove is formed on the end of the limiting tube near the drainage channel for the positioning ring. The positioning ring is embedded in the positioning groove. A limiting ring is fixedly connected inside the drainage channel. The limiting ring is located on the side of the limiting tube away from the drainage pipe. The filter screen is located between the limiting tube and the limiting ring, and the filter screen abuts against the limiting tube and the limiting ring.
[0012] Preferably, the angle between the central axis of the pipe body II and the horizontal plane is greater than 35° and less than 65°, and the projection of the pipe body II in the direction of its central axis completely coincides with the drainage channel.
[0013] Preferably, the waste discharge pipe is axially oriented vertically, and the inner wall of the waste discharge pipe smoothly transitions with the inner wall of the mounting box.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] In this invention, the transfer pipe of the filter component consists of vertically arranged pipes 1 and 2. Pipe 1 is designed to connect to the upper drain pipe, while the central axis of pipe 2 forms an angle greater than 30° and less than 90° with the horizontal plane to ensure that sewage flows into the installed box at an inclined angle. By precisely controlling the alignment of the projection of pipe 2 along its central axis with the drain trough, sewage can accurately impact the filter screen in the drain trough, thereby achieving efficient solid-liquid separation. Solid impurities are retained inside the installation box due to gravity and discharged through the waste discharge pipe connected to the bottom, thus directly removing solid impurities and avoiding the large accumulation of impurities in the filter component. In addition, the device has a simple structure, is easy to operate and maintain, is convenient for practical application, significantly improves the efficiency and convenience of domestic sewage treatment, and reduces treatment costs. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the overall structure of the filter component of this utility model.
[0018] Figure 3 This is a schematic diagram showing the positional relationship between the mounting box and the filter screen of this utility model.
[0019] Figure 4 This is a schematic diagram showing the fit between the positioning ring and the positioning groove of this utility model.
[0020] In the diagram: 1. Drainage pipe; 2. Filter component; 201. Transfer pipe; 2011. Pipe body II; 2012. Pipe body I; 202. Mounting box; 203. Waste discharge pipe; 204. Limiting pipe; 205. Filter screen; 206. Positioning ring; 207. Positioning groove; 208. Limiting ring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0023] Please see Figure 1 This utility model relates to a domestic sewage treatment device, the structure of which is similar to that of existing technology devices, including a filter component 2 for solid-liquid separation, and two vertically arranged drain pipes 1 on the filter component 2.
[0024] In practical applications, the two drain pipes 1 are arranged vertically. Wastewater enters the filter element 2 through the upper drain pipe 1, and solid-liquid separation is achieved after filtration. The purified liquid is discharged through the lower drain pipe 1.
[0025] like Figure 1 and Figure 2 As shown, the difference between this device and the prior art device is that the filter component 2 includes a mounting box 202, the upper end of which is connected to a transfer pipe 201.
[0026] The transfer pipe 201 consists of two pipe bodies, labeled as pipe body I 2012 and pipe body II 2011 respectively. Pipe body I 2012 is a vertical circular pipe structure, and its main purpose is to connect with the upper drain pipe 1. Therefore, its upper end is connected to the upper drain pipe 1.
[0027] The angle between the central axis of pipe body II 2011 and the horizontal plane is greater than 30° but less than 90°. This design ensures that sewage flows smoothly from pipe body I 2012 into pipe body II 2011 and is guided to the installation box 202 at a specific tilt angle.
[0028] Therefore, this device has a drainage groove on the side of the mounting box 202. Through precise adjustment, the central axis of the pipe body II 2011 is perfectly aligned with the drainage groove in projection, thus ensuring that the sewage in a solid-liquid mixed state flows directly into the drainage groove when it flows from the pipe body II 2011. At this time, if a suitable filter screen 205 is installed inside the drainage groove, the impact force of the sewage can directly act on the filter screen 205, and solid-liquid separation can be achieved by utilizing the filtration effect of the filter screen 205. Figure 3 As shown, liquid enters the left side of filter screen 205, while solid impurities remain inside the mounting box 202 (solid impurities will continue to sink due to gravity).
[0029] In addition, the device further specifies that the angle between the central axis of the pipe body II 2011 and the horizontal plane must be between 35° and 65° to ensure that the sewage has sufficient impact force on the filter screen 205 and to prolong the contact time between the sewage and the filter screen 205.
[0030] In addition, this device also specifies that the projection of the pipe body II 2011 in the direction of its central axis completely coincides with the drainage tank, so as to increase the contact area between the sewage and the filter screen 205 and ensure that the liquid can completely enter the interior of the drainage tank.
[0031] Accordingly, the device is provided with a waste discharge pipe 203 at the bottom of the mounting box 202. Solid impurities will fall into the waste discharge pipe 203 under the action of gravity, thereby realizing the separation of solid impurities from the mounting box 202.
[0032] It is worth noting that the waste discharge pipe 203 also adopts a vertical circular pipe structure to ensure compatibility with conventional equipment.
[0033] Therefore, the structure of the mounting box 202 is specially designed. The inner wall of the mounting box 202 and the inner wall of the waste discharge pipe 203 are designed to have a smooth transition, which effectively prevents solid impurities from being retained in the mounting box 202.
[0034] Therefore, this device specifies that the drainage trough is connected to the drainage pipe 1 located below, and the drainage pipe 1 located below is used to realize the receiving and transfer of liquid.
[0035] It is worth noting that, in order to ensure smooth liquid flow and prevent backflow, the total length of the lower drain pipe 1 is designed to be less than the height of the drain trough, thereby making full use of gravitational potential energy.
[0036] Furthermore, the device contains multiple filter components 2. By arranging multiple filter components 2 side by side, a multi-stage filtration function is achieved, which significantly improves the filtration effect.
[0037] Meanwhile, the two-stage filtration of multiple filter components eliminates the need to ensure that the sewage flowing out of pipe II 2011 completely impacts the filter screen 205, thereby reducing the requirements for the design of the tilt angle and length of the filter screen 205.
[0038] Correspondingly, the higher-positioned filter element 2 is connected to the pipe 1 of the lower filter element 2 via the waste discharge pipe 203, ensuring that wastewater can be filtered stage by stage. This design ensures that wastewater containing certain impurities discharged from the upper-stage filter element 2 can flow into the lower-stage filter element 2 for further filtration, thereby ensuring that multiple filter elements 2 can effectively perform multi-stage filtration.
[0039] Furthermore, the device is provided with a limiting pipe 204 between the mounting box 202 and the lower drain pipe 1. The two ends of the limiting pipe 204 are fixedly connected to the mounting box 202 and the drain pipe 1 respectively. The limiting pipe 204 ensures that the mounting box 202 and the drain pipe 1 are firmly connected, ensuring the stability of the device structure, and at the same time ensuring that the sewage flows smoothly from the mounting box 202 into the lower drain pipe 1 through the drainage channel.
[0040] In addition, the ingenious design of the limiting tube 204 allows the installation box 202 to flexibly adapt to various sizes of drain pipes 1, meeting diverse sewage treatment needs and ensuring that the lower drain pipe 1 accurately receives the liquid filtered by the filter screen 205, effectively preventing liquid backflow.
[0041] Specifically, such as Figure 3 , Figure 4 As shown, a positioning ring 206 is fixedly connected to the outer end of the mounting box 202, and the projection of the positioning ring 206 in the vertical direction coincides with the projection of the drainage channel. A positioning groove 207 is provided at the end of the limiting pipe 204 near the drainage channel, and the positioning ring 206 is embedded in the positioning groove 207. This positioning structure ensures precise alignment between the mounting box 202 and the limiting pipe 204, thereby ensuring smooth communication between the drainage channel and the limiting pipe 204, allowing sewage to flow unimpeded through the drainage channel into the limiting pipe 204, and finally smoothly discharge into the lower drainage pipe 1. Simultaneously, this structure also increases the contact area between the limiting pipe 204 and the positioning ring 206, ensuring an effective sealing structure between them.
[0042] Furthermore, to ensure that the filter screen 205 can be replaced during actual use (as impurities may become entangled on the filter screen 205 during use, and the filter screen 205 may rust or break), this device has a limiting ring 208 fixedly connected inside the drainage tank. The limiting ring 208 is located on the side of the limiting tube 204 away from the drainage pipe 1, and the filter screen 205 is located between the limiting tube 204 and the limiting ring 208, and is in close contact with both. The main function of the limiting ring 208 is to fix the filter screen 205, effectively preventing the filter screen 205 from shifting under the impact of strong sewage flow, thereby ensuring that the filter screen 205 can stably and efficiently perform its filtering function.
[0043] It should be noted that in practical applications, the filter screen 205 can be replaced with a baffle with a waterproof structure. In this case, cleaning fluid can be injected into the filter component 2 through the upper drain pipe 1, which can effectively clean the interior of multiple mounting boxes 202. Subsequently, the waste liquid generated during cleaning is smoothly discharged through the waste discharge pipe 203.
[0044] The present invention follows the following workflow in practical applications:
[0045] Single-stage filter component 2 workflow:
[0046] 1. Sewage introduction stage: Domestic sewage flows into the pipe body I 2012 of the transfer pipe 201 through the upper drain pipe 1. The pipe body I 2012 has an axial circular structure and is connected to the upper drain pipe 1 to ensure that sewage flows smoothly into the pipe body I 2012.
[0047] 2. Inclined flow into installation box 202 stage: Sewage flows from pipe I 2012 into pipe II 2011. The angle between the central axis of pipe II 2011 and the horizontal plane is between 35° and 65°. The sewage flows into installation box 202 at a specific inclination angle.
[0048] 3. Solid-liquid separation stage of impact filter 205: The projection of the central axis of pipe body II 2011 overlaps with the drainage trough, and the sewage directly impacts the filter 205 in the drainage trough. The left side of filter 205 receives the liquid, while solid impurities are trapped in the installation box 202 and continue to sink due to gravity.
[0049] 4. Solid impurity discharge stage: Solid impurities fall into the waste discharge pipe 203 connected to the bottom of the mounting box 202. The inner wall of the mounting box 202 and the inner wall of the waste discharge pipe 203 are smoothly connected to ensure that the solid impurities smoothly enter the waste discharge pipe 203 and thus separate from the mounting box 202.
[0050] 5. Liquid Discharge Stage: The drain trough is connected to the lower drain pipe 1, and the liquid flows into the lower drain pipe 1 through the drain trough. Since the height of drain pipe 1 is less than the height of the drain trough, the liquid will accumulate gravitational potential energy during the flow. This accumulation of potential energy helps prevent the liquid from flowing back against gravity.
[0051] Multi-stage filtration workflow:
[0052] 1. Multi-stage filtration start-up stage: Multiple filter components 2 are arranged in an up-and-down stacked manner, and the waste discharge pipe of the upper filter component 2 is directly connected to the pipe body I2012 of the lower filter component 2.
[0053] 2. Impurities from the previous stage enter the next stage: Wastewater containing impurities discharged from the previous stage filter element 2 will flow into the next stage filter element 2 for deeper filtration treatment.
[0054] 3. Repeated single-stage filtration process stage: Each filter component 2 follows the single-stage filtration process. Through multi-stage series connection, the overall filtration efficiency is effectively improved.
[0055] Cleaning process:
[0056] 1. Replace filter 205 with baffle: The filter 205 in the drain tank needs to be replaced with a baffle structure that has water-impermeable properties.
[0057] 2. Cleaning fluid injection stage: Cleaning fluid is injected into the filter component 2 through the upper drain pipe 1.
[0058] 3. Cleaning the installation box 202 stage: The cleaning fluid is used to clean the inside of multiple installation boxes 202.
[0059] 4. Waste liquid discharge stage: The waste liquid after cleaning is discharged through the waste discharge pipe 203.
[0060] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A domestic sewage treatment device, comprising a filter component (2), wherein two vertically axially connected drain pipes (1) are connected to the filter component (2), the two drain pipes (1) being arranged vertically, characterized in that: The filter component (2) includes a mounting box (202), with a transfer pipe (201) connected to the upper end of the mounting box (202) and a waste discharge pipe (203) connected to the lower end of the mounting box (202); The transfer pipe (201) includes a pipe body I (2012) and a pipe body II (2011) arranged vertically. The pipe body I (2012) is axially oriented vertically and is connected to the drain pipe (1) located at the upper end. The angle between the central axis of the pipe body II (2011) and the horizontal plane is greater than 30° and less than 90°. The mounting box (202) has a drainage groove on its side end. The mounting box (202) is connected to the drain pipe (1) located below it through the drainage groove. A filter screen (205) is provided in the drainage groove. The projection of the pipe body II (2011) along its central axis coincides with the drainage channel.
2. The domestic sewage treatment device according to claim 1, characterized in that: The number of filter components (2) is multiple, and the multiple filter components (2) are arranged side by side, and the waste pipe (203) in the upper filter component (2) is connected to the pipe body I (2012) in the filter component (2) below it.
3. The domestic sewage treatment device according to claim 1, characterized in that: A limiting tube (204) is provided between the mounting box (202) and the drain pipe (1) located below it. The two axial ends of the limiting tube (204) are fixedly connected to the corresponding mounting box (202) and drain pipe (1) respectively.
4. A domestic sewage treatment device according to claim 3, characterized in that: A positioning ring (206) is fixedly connected to the outer end of the mounting box (202). The projection of the positioning ring (206) on the vertical plane coincides with the projection of the drainage channel on the vertical plane. Furthermore, the limiting tube (204) has a positioning groove (207) for the positioning ring (206) at the end near the drainage channel. The positioning ring (206) is embedded in the positioning groove (207). A limiting ring (208) is fixedly connected inside the drainage channel. The limiting ring (208) is located on the side of the limiting pipe (204) away from the drainage pipe (1). The filter screen (205) is located between the limiting pipe (204) and the limiting ring (208). The filter screen (205) abuts against the limiting pipe (204) and the limiting ring (208).
5. A domestic sewage treatment device according to claim 1, characterized in that: The angle between the central axis of the pipe body II (2011) and the horizontal plane is greater than 35° and less than 65°, and the projection of the pipe body II (2011) in the direction of its central axis completely coincides with the drainage channel.
6. A domestic sewage treatment device according to claim 1, characterized in that: The waste discharge pipe (203) is axially oriented vertically, and the inner wall of the waste discharge pipe (203) smoothly transitions with the inner wall of the mounting box (202).