Non-point source pollution processor
By introducing annular guide channels and downpipes into the non-point source pollution processor, combined with overflow outlets and hanging basket designs, the problem of overflow blockage under heavy rain is solved, achieving efficient rainwater treatment and drainage safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-27
AI Technical Summary
Existing non-point source pollution processors cannot quickly and effectively discharge excessive rainwater through their overflow outlets during heavy rain or torrential rainfall, leading to water accumulation around the equipment and blockage of the overflow outlets, which affects the drainage efficiency and safety of the rainwater inlets.
A non-point source pollution processor was designed, comprising an annular guide channel and a drain outlet, for guiding rainwater to a sedimentation chamber and discharging debris rising in the sedimentation chamber through an overflow outlet. Combined with a hanging basket and filter media, it improves the efficiency and safety of rainwater treatment.
It effectively enhances the ability to receive and guide excessive rainwater under extreme weather conditions such as heavy rain, reduces accumulation around the equipment, avoids overflow blockage, and improves the drainage safety and treatment efficiency of the rainwater inlet.
Smart Images
Figure CN224048338U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to municipal drainage structure technical field, concretely relates to a non -point source pollution treater. BACKGROUND
[0002] Non -point source pollution treater is mainly used for controlling and reducing the environmental pollution problem of dispersibility, no fixed discharge point. In the municipal rainwater treatment process, usually, non -point source pollution treater is laid in the vicinity of the rainwater inlet, and the collected water is treated.
[0003] Generally, after rainwater enters non -point source pollution treater, it will first pass through the grid and intercept larger garbage and sundries, such as branches, plastic bags, etc., to prevent it from entering the subsequent processing process and causing blockage. Then, by using the principle of sedimentation, the particles such as silt in rainwater with higher density are settled to the bottom of the equipment. At the same time, by using filter screen or filter material, the filter technology is used to further remove the suspended solids, colloids and other pollutants in rainwater.
[0004] However, in the design of the existing non -point source pollution treater, the flow of rainwater is limited according to the local conventional rainfall data and a certain safety factor. In the case of heavy rain or heavy rainfall, the actual flow may be far more than the maximum treatment flow designed by non -point source pollution treater, resulting in that a large amount of rainwater cannot be discharged through the treater in time, and only overflow can occur.
[0005] Although the existing non -point source pollution treater also sets an overflow port to deal with the above problem, due to the structure design, the existing overflow port may not be able to quickly and effectively discharge excess rainwater. For example, the size of the overflow port is too small or the number is insufficient, which cannot meet the large flow drainage demand in heavy rain, so that a large amount of rainwater accumulates around the equipment and flows into the rainwater inlet, causing blockage.
[0006] In addition, during heavy rain, rainwater carries a large amount of silt and other particles, and the water flow is fast and the water volume is large, which also easily brings the sundries in the sedimentation area that are not cleaned in time to the overflow port, and the sundries accumulate at the overflow port, thereby causing the blockage of the overflow port, and further causing the blockage of the rainwater inlet. SUMMARY
[0007] The utility model aims at providing a non -point source pollution treater in the process of municipal rainwater treatment, to solve the problem of overflow blockage in heavy rainfall, and improve the drainage efficiency of rainwater inlet.
[0008] To achieve the above purpose, the utility model provides a non -point source pollution treater, which comprises a filter box;
[0009] The inside of the filter box is provided with a sediment chamber, the top of the filter box is provided with an annular flow guide groove, the annular flow guide groove is provided with a downspout, and the side wall of the filter box is sequentially provided with a drain and an overflow from bottom to top.
[0010] The filter box is configured to be installed at the rainwater inlet by the edge of the annular flow guide groove, and rainwater is guided into the sediment chamber through the downspout.
[0011] The overflow is configured to discharge the sundries in the sediment chamber rising with the flow out of the filter box.
[0012] As preferred, the utility model provides a kind of face source pollution treater further comprising hanging basket, hanging basket is arranged in sediment chamber, and water hole is provided on the side wall of hanging basket, and hanging basket is configured to intercept sundries in rainwater.
[0013] As preferred, the annular flow guide groove is rectangular or elliptical, and the downspout is arranged on the short side of the rectangular ring.
[0014] As preferred, the overflow is located at the long side of the rectangular ring.
[0015] As preferred, the inside of the sediment chamber is provided with filter medium, and recess is provided on the bottom side wall of hanging basket, and recess and the inner wall of sediment chamber form placing cavity for accommodating filter medium.
[0016] As preferred, the outside of the filter box is provided with clamping groove, and clamping groove is configured to install filter medium on the outside wall of filter box.
[0017] As preferred, the filter medium has clamping hook, and clamping hook is used for clamping on the outside wall of filter box.
[0018] As preferred, the top of the hanging basket is provided with support frame, and support frame is provided with through slot matched with overflow on the side wall.
[0019] As preferred, the drain is rectangular hole, round hole or waist hole.
[0020] As preferred, the bottom of the downspout is connected with drop water groove, and the bottom of drop water groove is lower than the top of placing cavity.
[0021] Invention principle: flow guide groove ensures that initial runoff can enter the sediment chamber and be fully filtered, improving processing efficiency. Overflow can ensure that rainwater inlet is not blocked by sundries, improving the safety of drainage.
[0022] Compared with the prior art, the surface source pollution treater has the following substantial characteristics and progresses: the surface source pollution treater is provided with the annular flow guide groove and the water inlet, can more effectively guide the rainwater to the sedimentation chamber, can greatly improve the receiving and guiding capacity of the excessive rainwater under the extreme weather such as heavy rain, reduces the risk of the rainwater accumulation around the equipment and the blockage caused by the inflow of the rainwater inlet, simultaneously, in the case of heavy rain or heavy rainfall, the overflow port can discharge the sundries in the sedimentation chamber with the water level rising to the filter box, effectively avoids the sundries accumulation at the overflow port, and further ensures that the rainwater inlet will not be blocked by the sundries to affect the drainage, and improves the safety of the rainwater drainage. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is a perspective structural schematic view of a surface source pollution treater in the embodiment of the utility model.
[0024] Figure 2 is Figure 1 the front view.
[0025] Figure 3 is Figure 2 the top view.
[0026] Figure 4 is Figure 2 the isometric sectional view structure schematic view of A-A in.
[0027] Figure 5 is a perspective structural schematic view of the filter box in the embodiment of the utility model.
[0028] Figure 6 is a perspective structural schematic view of the hanging basket in the embodiment of the utility model.
[0029] Figure 7 is an assembly structure schematic view of the surface source pollution treater with the external filter medium in the embodiment of the utility model.
[0030] The drawings show that: 1, filter box;2, hanging basket;3, filter medium;11, sedimentation chamber;12, annular flow guide groove;13, water inlet;14, drain;15, overflow port;16, placing cavity;17, clamping groove;18, drop water groove;21, filter hole;22, groove;23, support frame;24, through groove. DETAILED DESCRIPTION
[0031] The specific implementation of the utility model will be described in detail in combination with the drawings.
[0032] The surface source pollution treater in the embodiment of the utility model aims to solve the overflow blockage problem under heavy rainfall, and improve the drainage efficiency of the rainwater inlet.
[0033] The non-point source pollution processor proposed in this embodiment of the invention, by setting up an annular guide channel and a drain outlet, can more effectively guide rainwater to the sedimentation chamber. This significantly improves the ability to receive and guide excessive rainwater during extreme weather conditions such as heavy rainstorms, reducing the risk of rainwater accumulation around the equipment and clogging the drain outlet. Simultaneously, in the event of heavy rain or torrential downpours, the overflow outlet can discharge debris from the sedimentation chamber that rises with the water level into the filter box, effectively preventing debris accumulation at the overflow outlet. This ensures that the drain outlet is not blocked by debris, thus improving the safety of rainwater drainage.
[0034] Example 1
[0035] like Figure 1 As shown, a non-point source pollution processor includes a filter box 1 and a hanging basket 2. Figure 4 As shown, the filter box 1 has a sedimentation chamber 11 inside. An annular guide channel 12 is provided on the top of the filter box 1. A drain outlet 13 is provided on the annular guide channel 12. Figure 2 As shown, a drain outlet 14 and an overflow outlet 15 are arranged sequentially from bottom to top on the side wall of the filter box 1.
[0036] The filter box 1 is configured to be installed at the rainwater inlet using the edge of the annular guide channel 12, and to guide rainwater into the sedimentation chamber 11 through the drain outlet 13.
[0037] The overflow port 15 is configured to discharge debris that rises in the sedimentation chamber 11 as the water level rises into the filter box 1.
[0038] like Figure 3 As shown, the hanging basket 2 is arranged in the sedimentation chamber 11. Figure 6 As shown, the hanging basket 2 has filter holes 21 on its side wall. The hanging basket 2 is configured to intercept debris in rainwater and to filter the water in the sedimentation chamber 11 using the filter holes 21.
[0039] According to some preferred embodiments of the present invention, such as Figure 3 As shown, the annular guide channel 12 is rectangular or elliptical. The drain outlet 13 is located on the short side of the rectangular annular shape. The rectangular annular overflow weir design better suits the spatial shape around most rainwater inlets, especially in areas with narrow spaces or regular shapes, making full use of limited space for efficient layout. Compared to overflow weirs of other shapes, the rectangular annular shape can better fit the edge of the rainwater inlet during installation.
[0040] By placing the drain outlet 13 on the short side of the rectangular annular overflow weir, the water flow can be concentrated and directed into the sedimentation chamber 11 in a specific direction. In the face of heavy rainfall, this helps to guide rainwater into the treatment process quickly and orderly, effectively avoiding localized water flow obstruction caused by water dispersion, and further enhancing the treatment capacity for large-volume rainwater.
[0041] According to the water flow state of rainwater in the flow guide groove, the overflow weir formula is met:
[0042]
[0043] In the formula:
[0044] Q is the overflow design rainwater amount (L / s) borne by the overflow facility;
[0045] b is the width of the downspout (m);
[0046] h is the height of the overflow weir (m);
[0047] m is the flow coefficient;
[0048] g is the acceleration of gravity (m / s 2 ), and is 9.8.
[0049] For example, in the embodiment of the utility model, the downspout width of the surface source pollution treatment device is 0.053 m; the overflow orifice height is 0.038 m; and the flow coefficient is 385. Calculation shows that the overflow rainwater amount Q of the overflow weir (single weir) of the surface source pollution treatment device is 0.67 L / s, and the maximum overflow rainwater amount of the surface source pollution treatment device is 0.67*2=1.34 L / s. That is, when the actual runoff amount is not greater than 1.34 L / s, all rainwater flows into the filter core filtration zone in the sedimentation chamber through the downspout for purification.
[0050] As shown in Figure 2 , the overflow port 15 is located on the long side of the rectangular ring. In this way, the overflow port 15 is located on the long side of the rectangular ring, which can better adapt to the distribution of sundries in the chamber by using the relatively large length range of the long side. The sundries driven by the water flow have a greater probability of approaching the overflow port 15 on the long side, so as to be discharged from the filter box 1 more smoothly and efficiently.
[0051] In addition, the overflow port 15 is arranged on the long side, which can make the functional division of the sedimentation chamber 11 more reasonable. The short side is mainly responsible for the overflow function to guide rainwater into the chamber; and the long side is mainly responsible for the pollution discharge function to discharge sundries, which avoids the mutual interference of water flow in the overflow and pollution discharge processes, so that the sedimentation, overflow, pollution discharge and other links of the sedimentation chamber 11 can be orderly performed in the rainwater treatment process, and the operation stability and treatment efficiency of the entire device are improved.
[0052] As shown in Figure 4 , the inside of the sedimentation chamber 11 is provided with a filter medium 3. As shown in Figure 4 in combination with Figure 6As shown, the bottom side wall of the hanging basket 2 is provided with a groove 22. The groove 22 and the inner wall of the sedimentation chamber 11 enclose a placement cavity 16 for accommodating the filter medium 3. The filter medium 3 is used to further trap fine suspended particles, colloids and part of dissolved impurities in the rainwater, significantly improving the water quality of the effluent.
[0053] The filter medium 3 is placed in the placement cavity 16 enclosed by the groove 22 and the inner wall of the sedimentation chamber 11, which greatly facilitates the maintenance and replacement of the filter medium 3. When the filter medium 3 needs to be cleaned or replaced due to excessive trapping of pollutants after a period of use, the staff only needs to open the corresponding part to conveniently take out the filter medium 3 for operation.
[0054] At the same time, the filter medium 3 is placed in the placement cavity 16, which not only realizes its filtering function, but also plays a certain role in enhancing the structural stability of the sedimentation chamber 11. The filter medium 3 fills in the placement cavity 16, which can to some extent disperse the impact force of the water flow on the inner wall of the hanging basket 2 and the sedimentation chamber 11, and alleviate the influence of water flow fluctuation on the equipment structure.
[0055] As shown in Figure 6 The top of the hanging basket 2 is provided with a support frame 23, and the side wall of the support frame 23 is provided with a through slot 24 matched with the overflow port 15. The setting of the support frame 23 plays a reinforcing role for the hanging basket 2. During the operation of the equipment, the impact and fluctuation of the water flow may affect the hanging basket 2, while the support frame 23 can share part of the external force borne by the hanging basket 2, enhance the structural strength of the hanging basket 2, and make it more stable in the face of complex water flow environment.
[0056] The matching design of the through slot 24 and the overflow port 15 can accurately guide the impurities to the overflow port 15 for discharge when the water level rises, and the functional modules cooperate with each other closely, further improving the overall non-point source pollution treatment efficiency of the equipment, so that the equipment can run more efficiently and orderly in the process of treating rainwater during heavy rain or heavy rain.
[0057] As shown in Figure 1 In combination with Figure 5 The drainage port 14 can be selected as a rectangular hole or a waist-shaped hole according to the actual demand for treating rainwater.
[0058] As shown in Figure 1 In combination with Figure 6As shown, a cascading trough 18 is connected to the bottom of the drain outlet 13. The bottom of the cascading trough 18 is lower than the top of the placement chamber 16. The cascading trough 18 is used to smoothly guide rainwater to the bottom of the filter box 1, preventing rainwater entering the sedimentation chamber 11 from mixing with rainwater output from the overflow outlet 15. At the same time, the bottom of the cascading trough 18 being lower than the top of the placement chamber 16 helps to prolong the contact time between rainwater and the side wall of the cascading trough 18, disperses water flow energy, and allows for a smooth water flow transition, further reducing the disturbance of the falling water flow to the water in the sedimentation chamber 11.
[0059] Example 2
[0060] like Figure 7 As shown, a slot 17 is provided on the outer side of the filter box 1. The slot 17 is configured to install the filter medium 3 on the outer wall of the filter box 1. This design of the slot 17 makes the installation and removal of the filter medium 3 on the outside of the filter box 1 extremely convenient. Maintenance personnel can directly clean or replace the filter medium 3 from the outside without opening the internal structure of the equipment, greatly reducing maintenance difficulty and saving maintenance time. For example, the filter medium 3 has hooks for engaging with the outer wall of the filter box 1.
[0061] Large pieces of litter commonly found on roads include leaves and cigarette butts. Leaves, in particular, are quite large, and if the storm drain baskets are not cleaned regularly, they can clog the drain inlets. Therefore, considering the possibility of drainage safety under extreme weather conditions, larger overflow outlets are installed on the storm drain baskets. During heavy rains, runoff can wash away fallen leaves, ensuring drainage safety. According to relevant literature, the leaf sizes of common trees on municipal roads are shown in the table below.
[0062]
[0063]
[0064] Among them, camphor tree leaves are the largest, ranging from 97 to 114 mm. Therefore, in this embodiment, the overflow outlet size is preferably not smaller than the size of the fallen leaves. Verification by the rainwater experimental base of Jiangsu Yajing Environmental Science and Technology Research Institute Co., Ltd. showed that the diagonal of the overflow outlet should be 110 to 120 mm. The intercepting basket with a safe overflow function designed according to this size can prevent overflow blockage during heavy rainfall, improving the safety of rainwater drainage.
[0065] This utility model is not limited to the specific technical solutions described in the above embodiments. Besides the above embodiments, this utility model may have other implementation methods. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A non-point source pollution treatment device, comprising a filter box (1), an inside of the filter box (1) being provided with a sedimentation chamber (11), a top of the filter box (1) being provided with an annular flow guide groove (12), the annular flow guide groove (12) being provided with a downspout (13), a side wall of the filter box (1) being sequentially provided, from bottom to top, with a drain (14) and an overflow (15); characterized in that: the filter box (1) is configured to be installed at a rainwater inlet by using a rim of the annular flow guide groove (12), and rainwater is guided into the sedimentation chamber (11) through the downspout (13); the overflow (15) is configured to discharge sundries rising in the sedimentation chamber (11) with rising flow out of the filter box (1).
2. The area source pollution treater of claim 1, wherein, further comprising a hanging basket (2); the hanging basket (2) is arranged in the sedimentation chamber (11), a side wall of the hanging basket (2) is provided with a water passage hole (21), and the hanging basket (2) is configured to intercept sundries in rainwater.
3. The area source pollution treater of claim 1, wherein, the annular flow guide groove (12) is in a rectangular ring shape or an elliptical shape, and the downspout (13) is arranged on a short side of the rectangular ring shape.
4. The area source pollution treater of claim 3, wherein, the overflow (15) is located on a long side of the rectangular ring shape.
5. The area source pollution treater of claim 2, wherein, an inside of the sedimentation chamber (11) is provided with a filter medium (3), a bottom side wall of the hanging basket (2) is provided with a groove (22), and the groove (22) and an inner wall of the sedimentation chamber (11) enclose a placement cavity (16) for accommodating the filter medium (3).
6. The area source pollution treater of claim 1, wherein, an outside of the filter box (1) is provided with a clamping groove (17), and the clamping groove (17) is configured to mount the filter medium (3) on an outside wall of the filter box (1).
7. The area source pollution treater of claim 6, wherein, the filter medium (3) is provided with a clamping hook for clamping on the outside wall of the filter box (1).
8. The area source pollution treater of claim 2, wherein, a top of the hanging basket (2) is provided with a support frame (23), a side wall of the support frame (23) is provided with a through groove (24) matched with the overflow (15).
9. The area source pollution treater of claim 1, wherein, the drain (14) is a rectangular hole, a circular hole or a waist-shaped hole.
10. The area source pollution treater of claim 5, wherein, a bottom of the downspout (13) is connected with a drop chute (18), and a bottom of the drop chute (18) is lower than a top of the placement cavity (16).