Drainage device for municipal engineering

Abstract

The invention discloses a drainage device for municipal engineering, and relates to the field of sewage treatment.The drainage device comprises a sewage well and a drainage pipeline, a filtering channel is arranged between the sewage well and the drainage pipeline, the sewage well, the drainage pipeline and the filtering channel are sequentially communicated, and a collecting and filtering barrel is slidably mounted in the sewage well in the depth direction; when water flow enters the collecting and filtering barrel, the conical cover becomes a first active flow guide structure. Due to the design that the conical opening is upward, water flow falling vertically can be converted into inclined water flow diffusing all around, and the water flow precisely rushes to the discharging opening in cooperation with directional guiding of the guiding notch. By means of the design, the efficiency that water flows through the filter screen is improved, the separation effect of impurities and the filter screen is enhanced through the sputtering effect of the water flow, heavy particle impurities (such as gravel) sink to the bottom through the distance between the conical cover and the inner wall of the collecting and filtering barrel under the gravity effect, and layered collection of the impurities is achieved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and in particular to a drainage device for municipal engineering. Background Technology

[0002] Urban drainage systems are engineering facilities systems that treat and remove sewage and rainwater within cities. They are a component of urban public utilities. Currently, urban drainage systems are mainly divided into sewage treatment and rainwater treatment: Sewage treatment systems typically consist of drainage pipes and sewage treatment plants. Sewage generated from people's daily lives and production flows through drainage pipes to sewage treatment plants, where it is purified before being discharged into rivers or recycled. Rainwater treatment systems typically consist of sewage wells and drainage pipes. Drainage pipes are directly connected to rivers, and sewage wells are usually fitted with manhole covers.

[0003] After long-term use, sewage wells accumulate a large amount of debris or silt, causing blockages at the connection between the sewage well and the drainage pipe. Workers need to enter the sewage well to clean the debris and silt, which is very inconvenient.

[0004] Therefore, it is necessary to propose a drainage device for municipal engineering to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a drainage device for municipal engineering, which solves the problem that after long-term use, a large amount of debris or silt will accumulate in the sewage well, causing blockage at the connection between the sewage well and the drainage pipe. This requires workers to enter the sewage well to clean the debris and silt, which is very inconvenient.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drainage device for municipal engineering, comprising a sewage well and a drainage pipe, wherein a filter channel is provided between the sewage well and the drainage pipe, and the sewage well, the drainage pipe and the filter channel are connected in sequence;

[0007] A collection filter barrel is slidably installed inside the sewage well along the depth direction. A guide mechanism is provided inside the collection filter barrel to slide up and down along the depth direction. Two discharge outlets are opened on the side of the collection filter barrel facing the filter channel.

[0008] The guiding mechanism includes a lifting ring, a connecting plate fixed to the bottom end of the lifting ring, a conical cover connected to the bottom end of the connecting plate, a guide notch opened on the side facing the outlet of the conical cover, the conical opening of the conical cover is set upward, a spring telescopic rod fixed to the bottom end of the conical cover, and a conical pressure plate fixedly connected to the bottom of the spring telescopic rod;

[0009] The radius of the top of the conical cover is smaller than the radius of the lifting ring, and there is a gap between the outer side of the conical cover and the inner wall of the collection filter bucket.

[0010] Preferably, the two discharge outlets are distributed vertically, and two corresponding openings are provided between the sewage well and the filter channel, with the two corresponding openings corresponding to the positions of the two discharge outlets respectively;

[0011] Both outlets are equipped with filters. The bottom of the filter channel is connected to the drain pipe, and a metal filter plate is installed at the connection between the filter channel and the drain pipe.

[0012] Preferably, the sewage well has a movable trough along the depth direction, the bottom of the collection filter bucket is provided with a bottom cover, a slider is fixed on the outside of the bottom cover, the slider is slidably installed in the movable trough, and the top of the movable trough is in communication with the outside.

[0013] A first handle is inserted into the top of the movable slot, and a connecting rope is fixed between the bottom of the first handle and the top of the slider.

[0014] Preferably, limit slots are provided on both sides of the top of the movable slot, and limit blocks are fixed at both ends of the first handle, with the two limit blocks respectively engaging inside the corresponding limit slots.

[0015] Preferably, the inside of the collection filter barrel is provided with multiple inner sliding grooves along the depth direction, and the multiple inner sliding grooves are distributed around the center of the collection filter barrel. A sliding block is fixed on the outside of the lifting ring, and the sliding block is slidably installed in the corresponding inner sliding groove.

[0016] Preferably, the top of the sewage well is provided with a wellhead end, and a well cover is provided inside the wellhead end. The well cover is located on the top of the collection and filter bucket, and a groove is opened on the well cover. The bottom end of the groove is connected to the inside of the collection and filter bucket.

[0017] Preferably, the top of the manhole cover is provided with an auxiliary opening, and a baffle is rotatably connected inside the auxiliary opening. The auxiliary opening and the second handle are positioned correspondingly. Two second handles are fixed to the top of the lifting ring. The tops of the two second handles are set as pointed tips, and reflective warning strips are provided on the two second handles.

[0018] The baffle is rotatably connected to the inner wall of the auxiliary port at both ends by a rotating shaft, and a torsion spring is provided on the rotating shaft.

[0019] Preferably, there is a gap between the two outlets, and the filter screen and the corresponding outlet are detachably connected.

[0020] Preferably, a groove is provided on one side of the auxiliary port, and an extension block is elastically and telescopically connected in the groove. The side of the extension block near the baffle is set as an inclined opening, and the inclined opening corresponds to the inclination angle of the side of the tip.

[0021] Preferably, a reflective strip is provided at the top of the baffle.

[0022] The technical effects and advantages of this invention are as follows:

[0023] 1. When water enters the collection filter bucket, the conical shroud becomes the first active flow guiding structure. Its upward-facing conical opening transforms the vertically falling water flow into a diagonally spreading flow. Combined with the directional guidance of the guide notch, the water flow is precisely directed towards the outlet. This design not only improves the efficiency of water flow through the filter screen but also enhances the separation of impurities from the filter screen through the splashing effect of the water flow. Heavier particles (such as sand and gravel) settle to the bottom under gravity due to the gap between the conical shroud and the inner wall of the collection filter bucket, achieving stratified collection of impurities. If some impurities remain inside the conical shroud, subsequent rainwater will impact the shroud again, causing the impurities to fall into the collection filter bucket.

[0024] 2. When there are few impurities at the bottom, the spring telescopic rod is in a naturally extended state, and the conical pressure plate maintains slight contact with the impurities. This does not hinder the impurities from sinking, but also forms a secondary obstruction on the falling water flow, causing the residual water that has not passed through the filter screen to splash again. As the height of the impurities increases, the conical pressure plate is pushed upward, and the spring telescopic rod gradually contracts, causing the lifting ring to move upward. At this time, the pressure of the conical pressure plate on the impurities increases with the increase of the contraction. This pressure can squeeze out the water carried in the impurities, allowing this water to be discharged through the outlet. Furthermore, as the guide mechanism rises, it can correspond to the outlets at different heights, preventing the accumulation of materials from affecting drainage.

[0025] 3. The torsion spring design of the baffle ensures that it closes automatically when there is no external force, preventing foreign objects from entering; while the angle between the protruding block and the tip achieves a two-way function of "passive retraction - active support": when the second handle rises, the tip squeezes the inclined opening of the protruding block, causing it to retract into the groove, without obstructing the rise and fall; when the baffle is opened manually, the protruding block pops out under the action of the spring, forming a stable support for the baffle. At this time, the auxiliary opening can serve as a temporary drainage channel, increasing the drainage diameter in extreme weather such as heavy rain, and relieving drainage pressure.

[0026] 4. When the buildup inside the collection filter bucket is high, the buildup will push the guide mechanism upwards, raising the second handle at the top of the lifting ring. This makes it easier for personnel to open the manhole cover later and remove the entire collection filter bucket from the sewage well directly through the two second handles. When the impurities accumulate near the top, the lifting ring moves upwards, causing the second handle to open the baffle, creating a visual warning signal. This serves as a reminder that the inside is full and needs to be cleaned. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the drainage device for municipal engineering of the present invention.

[0028] Figure 2 This is a schematic diagram of the filter channel of the present invention.

[0029] Figure 3 This is a schematic diagram of the moving groove of the present invention.

[0030] Figure 4 For the present invention Figure 3 Enlarged diagram of point A in the middle.

[0031] Figure 5 This is a schematic diagram of the groove and auxiliary opening structure of the present invention.

[0032] Figure 6 This is a schematic diagram of the lifting ring structure of the present invention.

[0033] Figure 7 This is a schematic diagram of the internal sliding groove of the present invention.

[0034] Figure 8 This is a schematic diagram of the guiding mechanism of the present invention.

[0035] Figure 9 This is a schematic diagram of the structure of the manhole cover of the present invention.

[0036] Figure 10 For the present invention Figure 9 Enlarged diagram of point B in the middle.

[0037] Figure 11 This is a schematic diagram of the limiting groove structure of the present invention.

[0038] In the diagram: 1. Sewage well; 2. Metal filter plate; 3. Collection filter bucket; 4. Well cover; 5. Filter screen; 6. Drainage pipe; 7. Wellhead end; 8. Filter channel; 9. Corresponding opening; 10. Moving groove; 11. First handle; 12. Limiting block; 13. Connecting rope; 14. Limiting groove; 15. Discharge outlet; 16. Pull groove; 17. Auxiliary opening; 18. Bottom cover; 19. Sliding block; 20. Inner sliding groove; 21. Lifting ring; 22. Second handle; 23. Tip; 24. Sliding block; 25. Connecting plate; 26. Conical cover; 27. Guide notch; 28. Spring telescopic rod; 29. ​​Conical pressure plate; 30. Baffle; 31. Groove; 32. Protruding block. Detailed Implementation

[0039] This invention provides, for example Figures 1 to 11 A drainage device for municipal engineering is shown, including a sewage well 1 and a drainage pipe 6. A filter channel 8 is provided between the sewage well 1 and the drainage pipe 6. The sewage well 1, the drainage pipe 6 and the filter channel 8 are connected in sequence.

[0040] like Figure 1As shown, a collection filter bucket 3 is slidably installed inside the sewage well 1 along the depth direction. A wellhead end 7 is set at the top of the sewage well 1, and a well cover 4 is set inside the wellhead end 7. The well cover 4 is set at the top of the collection filter bucket 3. A groove 16 is opened on the well cover 4. The bottom end of the groove 16 is connected to the inside of the collection filter bucket 3. Rainwater or sewage first enters the collection filter bucket 3 through the groove 16 of the well cover 4. The opening size of the groove 16 is optimized to ensure that the water flow can be quickly integrated, and to initially block larger debris (such as branches, plastic bottles, etc.) from entering the device, thereby reducing the subsequent filtration pressure.

[0041] The collection filter bucket 3 is slidably installed along the depth direction inside the sewage well 1. This design makes it easy for staff to remove it for cleaning and maintenance.

[0042] like Figure 6 , 8 As shown, the inside of the collection filter bucket 3 is equipped with a guide mechanism that slides up and down along the depth direction, and the collection filter bucket 3 has two discharge ports 15 on the side facing the filter channel 8.

[0043] The guiding mechanism includes a lifting ring 21, a connecting plate 25 fixed at the bottom of the lifting ring 21, a conical cover 26 connected at the bottom of the connecting plate 25, a guide notch 27 opened on the side of the conical cover 26 facing the outlet 15, the conical opening of the conical cover 26 is set upward, a spring telescopic rod 28 fixed at the bottom of the conical cover 26, and a conical pressure plate 29 fixedly connected to the bottom of the spring telescopic rod 28.

[0044] like Figure 6 , 7 As shown, the collection filter barrel 3 has multiple inner grooves 20 along its depth direction, distributed around the center of the collection filter barrel 3. A sliding block 24 is fixed to the outside of the lifting ring 21, and the sliding block 24 is slidably installed within the corresponding inner groove 20. The lifting ring 21 is slidably installed within the inner groove 20 via the sliding block 24. By setting multiple inner grooves 20, the lifting stability of the lifting ring 21 can be increased.

[0045] The radius of the top of the conical cover 26 is smaller than the radius of the lifting ring 21, and there is a gap between the outer side of the conical cover 26 and the inner wall of the collection filter barrel 3.

[0046] like Figure 5 As shown, the groove 16 facilitates the entry of rainwater and sewage into the collection filter barrel 3, where they are filtered by the collection filter barrel 3 before entering the filter channel 8, and finally being transported into the drainage pipe 6.

[0047] Two discharge outlets 15 are distributed vertically, and two corresponding ports 9 are provided between the sewage well 1 and the filter channel 8. The two corresponding ports 9 correspond to the positions of the two discharge outlets 15 respectively.

[0048] Both outlets 15 are equipped with filter screens 5. The bottom of the filter channel 8 is connected to the drain pipe 6, and a metal filter plate 2 is installed at the connection between the filter channel 8 and the drain pipe 6. The metal filter plate 2 can further filter the water flowing through the filter channel 8, removing fine impurities from the water, preventing the drain pipe 6 from becoming clogged, and extending the service life of the drain pipe 6. The metal material has high strength and durability and can withstand the long-term impact of water flow. The metal filter plate 2 can be made of aluminum alloy.

[0049] It should be noted that when there are no impurities inside the collection filter bucket 3, the guide mechanism and the discharge port 15 at the bottom correspond to the corresponding port 9. Multiple discharge ports 15 at different heights can be set as needed, or multiple discharge ports 15 at different heights can be connected vertically.

[0050] When water enters the collection filter bucket 3, the conical cover 26 becomes the first active flow guiding structure. Its upward-facing conical opening transforms the vertically falling water flow into a diagonally spreading flow, which, combined with the directional guidance of the guide notch 27, ensures the water flows precisely towards the outlet 15. This design not only improves the efficiency of water flow through the filter screen 5 but also enhances the separation of impurities from the filter screen through the splashing effect of the water flow—light impurities (such as fallen leaves and fibers) in the water flow are intercepted by the filter screen 5 with the splashing water flow, while heavier particulate impurities (such as sand and gravel) sink to the bottom under gravity through the gap between the conical cover 26 and the inner wall of the collection filter bucket 3, achieving stratified collection of impurities. If some impurities remain inside the conical cover 26, subsequent rainwater will impact the conical cover 26 again, causing the impurities to fall into the collection filter bucket 3.

[0051] The spring telescopic rod 28 and the conical pressure plate 29 form an elastic pressure system, which exhibits dynamic adaptability during operation: when there are few impurities at the bottom, the spring telescopic rod 28 is in a naturally extended state, and the conical pressure plate 29 maintains slight contact with the impurities, which neither hinders the sinking of the impurities nor creates a secondary obstruction for the falling water flow, causing the residual water that has not passed through the filter screen 5 to splash again; as the height of the impurity accumulation increases, the conical pressure plate 29 is subjected to an upward thrust, and the spring telescopic rod 28 gradually contracts, causing the lifting ring 21 to move upward. At this time, the pressure of the conical pressure plate 29 on the impurities increases with the increase of the contraction amount. This pressure can squeeze out the water carried in the impurities, allowing this part of the water to be discharged through the outlet 15, preventing the impurities from absorbing water and expanding, thus clogging the collection space.

[0052] In addition, the cone-shaped cover 26 will buffer the falling rainwater to prevent it from falling directly and hitting the collection filter bucket 3, thus preventing erosion.

[0053] If impurities accumulate to a high level, the gradually increasing accumulation will push up the conical pressure plate 29, causing the lifting ring 21 to slide upwards. This gradually aligns the guide mechanism with the upper outlet 15. The weight of the guide mechanism itself will cause the conical pressure plate 29 to squeeze the accumulation, allowing the moisture inside the accumulation to be discharged from the outlet 15, thus facilitating the continued filtration of falling rainwater.

[0054] like Figure 6 , 8 As shown, the top of the lifting ring 21 is fixed with two second handles 22, the top of the two second handles 22 is set as a pointed tip 23, and the two second handles 22 are provided with reflective warning strips; the top of the manhole cover 4 is provided with an auxiliary opening 17, and a baffle 30 is rotatably connected inside the auxiliary opening 17. The auxiliary opening 17 and the second handle 22 are in corresponding positions. The two ends of the baffle 30 are rotatably connected to the inner wall of the auxiliary opening 17 through a rotating shaft, and a torsion spring is provided on the rotating shaft.

[0055] When the buildup inside the collection filter bucket 3 is high, the buildup will push the guide mechanism upwards, causing the second handle 22 at the top of the lifting ring 21 to be in a higher position. This makes it easier for personnel to open the manhole cover 4 later and directly remove the entire collection filter bucket 3 from the sewage well 1 via the two second handles 22. When the impurities accumulate to near the top, the lifting ring 21 moves upwards, causing the second handle 22 to open the baffle 30, creating a visual warning signal. This serves as a reminder to personnel that the inside is full and needs to be cleaned.

[0056] like Figure 9 As shown, the reflective warning strips and the reflective strip at the top of the baffle 30 can serve as a warning in low-light environments, preventing people from accidentally stepping on them and improving safety. The torsion spring can automatically close the baffle 30 when no force is applied, preventing debris from entering.

[0057] The sewage well 1 has a movable trough 10 along the depth direction. The bottom of the collection filter bucket 3 is provided with a bottom cover 18. A slider 19 is fixed on the outside of the bottom cover 18. The slider 19 is slidably installed in the movable trough 10. The top of the movable trough 10 is connected to the outside. A first handle 11 is inserted into the top of the movable trough 10. A connecting rope 13 is fixed between the bottom of the first handle 11 and the top of the slider 19.

[0058] like Figure 2 As shown, limit slots 14 are provided on both sides of the top of the moving slot 10, and limit blocks 12 are fixed at both ends of the first handle 11. The two limit blocks 12 are respectively engaged in the corresponding limit slots 14.

[0059] Furthermore, the collection filter 3 can be slidably installed inside the sewage well 1 via the slider 19. At the same time, the slider 19 can limit the position of the collection filter 3 to prevent relative rotation between the collection filter 3 and the sewage well 1.

[0060] When the collection filter bucket 3 descends into the sewage well 1, the slider 19 will also descend to the bottom of the moving trough 10. At this time, the first handle 11 can be installed on the top of the moving trough 10. The limiting groove 14 will support the first handle 11 to prevent it from descending further.

[0061] When it is necessary to remove the collection filter bucket 3, the staff does not need to go down into the well. They can simply pull the connecting rope 13 through the first handle 11 to lift the entire collection filter bucket 3 out of the sewage well 1.

[0062] A gap is left between the two outlets 15, and the filter screen 5 and the corresponding outlet 15 are detachably connected. This detachable connection method makes cleaning and replacing the filter screen 5 more convenient and ensures the durability of the filtration effect. For example, bolt connection or snap-fit ​​connection can be used.

[0063] like Figure 10 As shown, a groove 31 is provided on one side of the auxiliary port 17. An extension block 32 is elastically and telescopically connected in the groove 31. The side of the extension block 32 near the baffle 30 is set as an inclined opening. The inclined opening corresponds to the inclination angle of the side of the tip 23. A spring is installed inside the groove 31. One end of the spring is connected to the extension block 32, and the extension block 32 is slidably installed inside the groove 31. A reflective strip is provided at the top of the baffle 30.

[0064] As needed, personnel can also actively open the baffle 30 and flip the baffle 30 upwards. At this time, the protruding block 32 will be unobstructed and will rise automatically. The protruding block 32 will resist the upward-flipping baffle 30 to form support, making it easier for more rainwater to fall.

[0065] Because the tilt angles of the inclined opening and the side of the tip 23 correspond, when the second handle 22 rises, the tip 23 presses against the inclined opening, causing the protruding block 32 to retract into the groove 31, without affecting the raising and lowering of the second handle 22. The reflective strips and reflective warning strips are both made of 3M high-visibility reflective material. The collection filter bucket 3 uses different materials depending on the region. The collection filter bucket 3 is made of high-density polyethylene (HDPE), which has excellent acid and alkali corrosion resistance and is suitable for industrial drainage. The filter screen 5 is made of 316 stainless steel, which can maintain long-term stability in salt spray environments such as coastal areas. The spring of the spring telescopic rod 28 is made of piano wire, which maintains elastic stability in a temperature range of -30℃ to 80℃, ensuring normal operation in cold or high-temperature areas.

Claims

1. A drainage device for municipal engineering, comprising a sewage well (1) and a drainage pipe (6), characterized in that: A filter channel (8) is provided between the sewage well (1) and the drainage pipe (6), and the sewage well (1), the drainage pipe (6) and the filter channel (8) are connected in sequence; The sewage well (1) is equipped with a collection filter bucket (3) that slides along the depth direction inside the well. The collection filter bucket (3) is equipped with a guide mechanism that slides up and down along the depth direction inside the well. The collection filter bucket (3) has two discharge outlets (15) on the side facing the filter channel (8). The guiding mechanism includes a lifting ring (21), a connecting plate (25) is fixed at the bottom of the lifting ring (21), a conical cover (26) is connected at the bottom of the connecting plate (25), the conical cover (26) has a guide notch (27) facing the outlet (15), the conical opening of the conical cover (26) is set upward, a spring telescopic rod (28) is fixed at the bottom of the conical cover (26), and a conical pressure plate (29) is fixedly connected to the bottom of the spring telescopic rod (28). The radius of the top of the conical cover (26) is smaller than the radius of the lifting ring (21), and there is a gap between the outer side of the conical cover (26) and the inner wall of the collection filter bucket (3).

2. A drainage device for municipal engineering according to claim 1, characterized in that: Two outlets (15) are distributed vertically, and two corresponding ports (9) are provided between the sewage well (1) and the filter channel (8). The two corresponding ports (9) correspond to the positions of the two outlets (15) respectively. Both outlets (15) are equipped with filter screens (5), the bottom of the filter channel (8) is connected to the drain pipe (6), and a metal filter plate (2) is provided at the connection between the filter channel (8) and the drain pipe (6).

3. A drainage device for municipal engineering according to claim 1, characterized in that: The sewage well (1) has a movable groove (10) along the depth direction. The bottom of the collection filter bucket (3) is provided with a bottom cover (18). A slider (19) is fixed on the outside of the bottom cover (18). The slider (19) is slidably installed in the movable groove (10). The top of the movable groove (10) is connected to the outside. A first handle (11) is inserted into the top of the moving slot (10), and a connecting rope (13) is fixed between the bottom of the first handle (11) and the top of the slider (19).

4. A drainage device for municipal engineering according to claim 2, characterized in that: Limiting grooves (14) are provided on both sides of the top of the moving groove (10), and limiting blocks (12) are fixed at both ends of the first handle (11). The two limiting blocks (12) are respectively engaged in the corresponding limiting grooves (14).

5. A drainage device for municipal engineering according to claim 1, characterized in that: The collection filter barrel (3) has multiple inner grooves (20) along the depth direction inside. The multiple inner grooves (20) are distributed around the center of the collection filter barrel (3). A sliding block (24) is fixed on the outside of the lifting ring (21). The sliding block (24) is slidably installed in the corresponding inner groove (20).

6. A drainage device for municipal engineering according to claim 1, characterized in that: The sewage well (1) is provided with a wellhead end (7) at the top, and a well cover (4) is provided inside the wellhead end (7). The well cover (4) is located at the top of the collection filter bucket (3). A groove (16) is provided on the well cover (4), and the bottom end of the groove (16) is connected to the inside of the collection filter bucket (3).

7. A drainage device for municipal engineering according to claim 6, characterized in that: The top of the manhole cover (4) is provided with an auxiliary opening (17), and a baffle (30) is rotatably connected inside the auxiliary opening (17). The auxiliary opening (17) is in the same position as the second handle (22). The top of the lifting ring (21) is fixed with two second handles (22). The tops of the two second handles (22) are set as sharp points (23), and reflective warning strips are provided on the two second handles (22). The baffle (30) is rotatably connected to the inner wall of the auxiliary port (17) at both ends by a rotating shaft, and a torsion spring is provided on the rotating shaft.

8. A drainage device for municipal engineering according to claim 2, characterized in that: There is a gap between the two outlets (15), and the filter (5) and the corresponding outlet (15) are detachably connected.

9. A drainage device for municipal engineering according to claim 7, characterized in that: A groove (31) is provided on one side of the auxiliary port (17), and an extension block (32) is elastically and telescopically connected in the groove (31). The side of the extension block (32) near the baffle (30) is set as an inclined opening, and the inclined opening corresponds to the inclination angle of the side of the tip (23).

10. A drainage device for municipal engineering according to claim 7, characterized in that: A reflective strip is provided at the top of the baffle (30).

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