Sewage cleaning well
By introducing a filter screen and a water trap structure into the inspection well, the problems of inspection well blockage and odor backflow were solved, achieving smooth sewage discharge and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CIXI HUSHAN MUNICIPAL CONSTRUCTION CO LTD
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-17
AI Technical Summary
Inspection wells in municipal sewage systems are easily clogged by solid waste, and sewage odors can easily flow back to the ground, affecting environmental management.
Design a sewage cleaning well that uses a filter screen and a water trap structure. The filter screen is made of stainless steel grating, and the water trap is made of plastic. Combined with a crushed stone foundation layer, a backfill stone chip layer, and a cleaning well cylinder, it prevents solid waste from entering and prevents sewage backflow.
It effectively prevents solid waste from entering the cleaning well, stops sewage odors from flowing back to the ground, ensures smooth sewage discharge, facilitates maintenance and cleaning, and improves environmental governance.
Smart Images
Figure CN224514369U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sewage well structural design technology, and in particular to a sewage cleaning well. Background Technology
[0002] Sewage inspection wells are ubiquitous in residential areas, public buildings, and factories. They are typically located at intersections, bends, changes in pipe diameter or slope, and drop structures of drainage pipes to facilitate regular inspections, cleaning, dredging, and inspections by entering the wells.
[0003] For example, Chinese patent application number CN201420348260.3 discloses a plastic inspection well with a protective cover, including an injection-molded plastic well base, a vertical connecting pipe and a horizontal connecting pipe on the plastic well base, a plastic well cylinder installed on the vertical connecting pipe, and a buried drainage and sewage pipe connected to the horizontal connecting pipe. A non-protective well cover is installed at the upper opening of the plastic well cylinder, a protective sleeve is installed on the outer wall of the upper opening of the plastic well cylinder, a concrete base layer and a gravel cushion layer are set outside the protective sleeve, a well ring is set on the gravel cushion layer, and a protective well cover is installed in the well ring.
[0004] Regarding the aforementioned related technologies, the inventors believe that the following defects exist:
[0005] In the actual application of municipal sewage systems, inspection wells are easily clogged because sewage contains a lot of solid waste. Moreover, the sewage inside the inspection wells has a pungent odor, which can easily flow back to the ground through the sewage pipes, which is detrimental to environmental management. Summary of the Invention
[0006] This application provides a sewage cleaning well to improve the following technical problems:
[0007] In the actual application of municipal sewage systems, inspection wells are easily clogged because sewage contains a lot of solid waste. Moreover, the sewage inside the inspection wells has a pungent odor, which can easily flow back to the ground through the sewage pipes, which is detrimental to environmental management.
[0008] This application provides a sewage cleaning well, which adopts the following technical solution:
[0009] A sewage cleaning well includes a crushed stone base layer, a backfill stone chip layer, and a cleaning well cylinder. The backfill stone chip layer is laid on the crushed stone base layer, and the cleaning well cylinder is vertically installed within the backfill stone chip layer. A crushed stone cushion layer and a concrete layer are laid sequentially on the crushed stone base layer. The concrete layer is arranged in a ring around the cleaning well cylinder. A road surface structure is provided on the outer crushed stone cushion layer and the concrete layer. A sewage ditch is provided on the road surface structure. The bottom of the sewage ditch is connected to the inner bottom of the cleaning well cylinder through several L-shaped sewage pipes. Several filter screens are also provided inside the sewage ditch. The filter screens are located directly above the top opening of the sewage pipes. A water trap is provided at the bottom end of the sewage pipes. The water trap is located inside the cleaning well cylinder.
[0010] In one feasible technical solution of this application, the filter screen is a stainless steel grid mesh, and the aperture of the stainless steel grid mesh is between 4 and 7 mm.
[0011] In one feasible technical solution of this application, the sewage ditch includes a concrete base plate and side panels. The side panels are made of solid concrete bricks and cement mortar. The inner surface of the sewage ditch is provided with a 2-3 mm thick waterproof mortar layer. The side panels are located above the supporting surface of the road structure, and the concrete base plate is located below the supporting surface of the road structure.
[0012] In one feasible technical solution of this application, the water trap is a P-type or S-type structure, the water trap is a plastic part, and the drain pipe is a UPVC pipe.
[0013] In one feasible technical solution of this application, a sheath is provided on the top outer peripheral wall of the cleaning well barrel. A gap is left between the inner peripheral wall of the sheath and the outer peripheral wall of the cleaning well barrel, and the gap is filled with a polyurethane mortar layer. A metal reinforcement is also provided between the sheath and the outer peripheral wall of the cleaning well barrel. Some parts of the metal reinforcement penetrate through the bottom of the sheath and extend into the gravel pad layer. An inner cover can be detachably installed on the top of the cleaning well barrel. A concrete annular base is also provided on the concrete layer. An outer well ring and an inner well seat are fixed on the concrete annular base. Both the outer well ring and the inner well seat are annular structures and cast iron parts. A steel fiber reinforced concrete well cover is installed in the inner well seat. A concrete filling ring is also provided in the gap between the outer well ring and the inner well seat. The cross-section of the concrete filling ring is a right triangle.
[0014] In one feasible technical solution of this application, the inner cover has an annular mesh basket arranged downward in the middle, and the bottom surface of the inner cover is provided with an inner ring that abuts against the inner peripheral wall of the cleaning well.
[0015] In one feasible technical solution of this application, the metal reinforcement includes a ring, a plurality of fixing bolts and a plurality of anchor rods. The fixing bolts are threaded through the ring. The ring is sleeved on the outer peripheral wall of the cleaning well and locked by the fixing bolts. The anchor rods are arranged laterally and their main bodies are located in the gravel cushion layer. The inner end of the anchor rod penetrates the bottom of the sheath and is threaded onto the ring. The anchor rod is perpendicular to the ring.
[0016] In one feasible technical solution of this application, the number of the anchor rods is between 3 and 10, the number of the fixing bolts is between 4 and 8, and the fixing bolts are located between adjacent anchor rods.
[0017] In one feasible technical solution of this application, a threaded sleeve is provided on the outer peripheral wall of the ring, and the inner end of the rebar rod is threadedly assembled in the threaded sleeve.
[0018] In one feasible technical solution of this application, the metal reinforcement is a stainless steel part, and the length of the rebar extending into the crushed stone pad layer is between 50 and 100 centimeters.
[0019] In summary, this application includes at least one of the following beneficial technical effects:
[0020] The filter screen can effectively prevent solid waste in sewage from entering the sewage pipe and cleaning well. The water trap inside the cleaning well can effectively prevent sewage from flowing back into the sewage pipe through water storage. As a result, odors are less likely to flow back to the ground through the sewage pipe, which is beneficial to environmental management. The design of the cleaning well also makes it convenient for staff to carry out maintenance and cleaning, ensuring smoother sewage discharge. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of the sewage cleaning well according to an embodiment of this application.
[0023] Figure 2 This is a schematic diagram of the structure of the metal reinforcement component in the embodiments of this application.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Crushed stone base layer; 2. Backfill stone chip layer; 3. Cleaning well shaft; 4. Crushed stone cushion layer; 5. Concrete layer; 6. Sheath pipe; 7. Polyurethane mortar layer; 8. Metal reinforcement components; 81. Ring; 82. Fixing bolt; 83. Rebar rod; 84. Threaded sleeve; 9. Inner cover; 91. Annular mesh basket; 92. Inner ring; 10. Concrete annular base; 11. Outer well ring; 12. Inner well seat; 13. Steel fiber reinforced concrete well cover; 14. Concrete filling ring; 15. Road structure; 16. Sewage ditch; 161. Concrete base slab; 162. Side panel; 17. Sewage pipe; 18. Filter screen; 19. Water trap. Detailed Implementation
[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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 application 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 application.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0030] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0031] This application discloses a sewage cleaning well. (Refer to...) Figure 1-2The sewage cleaning well includes a crushed stone base layer 1, a backfill stone chip layer 2, and a cleaning well cylinder 3. The backfill stone chip layer 2 is laid on the crushed stone base layer 1, and the cleaning well cylinder 3 is vertically installed inside the backfill stone chip layer 2. A crushed stone cushion layer 4 and a concrete layer 5 are laid sequentially on the crushed stone base layer 1. The concrete layer 5 is arranged around the cleaning well cylinder 3. A road structure 15 is set on the outer crushed stone cushion layer 4 and the concrete layer 5. A sewage ditch 16 is set on the road structure 15. The bottom of the sewage ditch 16 is connected to the inner bottom of the cleaning well cylinder 3 through several L-shaped sewage pipes 17. Several filter screens 18 are also set inside the sewage ditch 16. The filter screens 18 are located directly above the top opening of the sewage pipes 17. A water trap 19 is also set at the bottom of the sewage pipes 17. The water trap 19 is located inside the cleaning well cylinder 3.
[0032] In this embodiment, the drainage ditch 16 includes a concrete base slab 161 and side panels 162. The side panels 162 are made of solid concrete bricks and cement mortar. The inner surface of the drainage ditch 16 is provided with a 2-3 mm thick waterproof mortar layer. The side panels 162 are located above the supporting surface of the road structure 15, and the concrete base slab 161 is located below the supporting surface of the road structure 15. The water trap 19 is a P-type or S-type structure and is made of plastic. The sewage pipe 17 is a UPVC pipe.
[0033] A sheath 6 is installed on the outer peripheral wall of the top of the cleaning well 3. A gap is left between the inner peripheral wall of the sheath 6 and the outer peripheral wall of the cleaning well 3, and the gap is filled with a polyurethane mortar layer 7. A metal reinforcement 8 is also installed between the sheath 6 and the outer peripheral wall of the cleaning well 3. Some parts of the metal reinforcement 8 penetrate through the bottom of the sheath 6 and extend into the gravel pad layer 4. An inner cover 9 can be detachably installed on the top of the cleaning well 3. A concrete annular base 10 is also installed on the concrete layer 5. An outer well ring 11 and an inner well seat 12 are fixed together. Both the outer well ring 11 and the inner well seat 12 are ring structures and cast iron parts. A steel fiber reinforced concrete well cover 13 is installed in the inner well seat 12. A concrete filling ring 14 is also provided in the gap between the outer well ring 11 and the inner well seat 12. The cross-section of the concrete filling ring 14 is a right triangle. The design of the concrete filling ring 14 significantly improves the support strength between the outer well ring 11 and the inner well seat 12, so that the outer well ring 11 and the inner well seat 12 are not easily bent and deformed under strong pressure.
[0034] The thickness of the crushed stone base layer 1 is between 140-160 cm, the thickness of the crushed stone cushion layer 4 is between 8-12 cm, the thickness of the concrete layer 5 is between 12-20 cm, the height of the sheath pipe 6 is between 25-50 cm, and the thickness of the polyurethane mortar layer 7 is between 1-2 cm.
[0035] By adding a polyurethane mortar layer 7 and metal reinforcements 8, the connection between the sheath pipe 6 and the cleaning well 3 is made more secure, reducing the adverse effects of ground subsidence or large vehicles pressing down on the sheath pipe 6. As a result, the inner cover 9 at the top of the cleaning well 3 is less likely to loosen or shake, making the entire cleaning well structure more robust, extending its service life, reducing the frequency of maintenance and repair after use, lowering operating costs, and enhancing practicality.
[0036] In this embodiment, the filter screen 18 is a wavy stainless steel grid, and the aperture of the stainless steel grid is between 4 and 7 mm. The filter screen 18 designed above has a simple and strong structure, is not easy to bend or deform, and has a better filtration effect on solid waste in sewage.
[0037] In this embodiment, the metal reinforcement component 8 includes a ring 81, multiple fixing bolts 82, and multiple anchor rods 83. The fixing bolts 82 are threaded through the ring 81. The ring 81 is sleeved on the outer peripheral wall of the cleaning well 3 and locked by the fixing bolts 82. The anchor rods 83 are arranged laterally and their main bodies are located in the gravel cushion layer 4. The inner end of the anchor rod 83 penetrates the bottom of the sheath tube 6 and is threaded onto the ring 81. The anchor rods 83 are perpendicular to the ring 81.
[0038] Specifically, the number of anchor rods 83 is between 3 and 10, and the number of fixing bolts 82 is between 4 and 8. The fixing bolts 82 are located between adjacent anchor rods 83. In this embodiment, there are 6 sets of anchor rods 83 and fixing bolts 82 respectively. In order to facilitate the connection and fixing of anchor rods, a threaded sleeve 84 is provided on the outer peripheral wall of the ring 81. The inner end thread of the anchor rod 83 is fitted into the threaded sleeve 84. The metal reinforcement part 8 is a stainless steel part. The length of the anchor rod 83 extending into the crushed stone cushion layer 4 is between 50 and 100 centimeters.
[0039] The metal reinforcement component 8 designed above has a simple structure, is firmly installed and convenient, and can effectively connect the cleaning well barrel 3, the protective casing 6 and the crushed stone pad layer 4 into one unit, thus providing better structural reinforcement for the inspection well.
[0040] To facilitate quick installation and removal of the inner cover 9, the middle part of the inner cover 9 is integrally formed with a downward-facing annular mesh basket 91, and the bottom surface of the inner cover 9 is provided with an inner ring 92 that abuts against the inner circumferential wall of the cleaning well cylinder 3.
[0041] The beneficial technical effects of the sewage cleaning wells in this application embodiment are roughly as follows:
[0042] The filter screen 18 can effectively prevent solid waste in sewage from entering the sewage pipe 17 and the cleaning well 3. The water trap 19 inside the cleaning well 3 can effectively prevent sewage inside the cleaning well 3 from flowing back into the sewage pipe 17 through water storage. As a result, odors are less likely to flow back to the ground through the sewage pipe 17, which is beneficial to environmental management. The design of the cleaning well 3 makes it convenient for staff to carry out maintenance and cleaning, ensuring smoother sewage discharge.
[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A sewage cleaning well, characterized in that, The system includes a crushed stone base layer (1), a backfill stone chip layer (2), and a sweeping manhole (3). The backfill stone chip layer (2) is laid on the crushed stone base layer (1), and the sweeping manhole (3) is vertically installed inside the backfill stone chip layer (2). A crushed stone cushion layer (4) and a concrete layer (5) are laid sequentially on the crushed stone base layer (1). The concrete layer (5) is arranged around the sweeping manhole (3). A road surface structure (15) is provided on the outer crushed stone cushion layer (4) and the concrete layer (5). A drainage ditch (16) is provided on the road structure (15). The bottom of the drainage ditch (16) is connected to the bottom of the sweeping well (3) through several L-shaped drainage pipes (17). Several filter screens (18) are also provided inside the drainage ditch (16). The filter screens (18) are located directly above the top opening of the drainage pipes (17). A water trap (19) is also provided at the bottom of the drainage pipes (17). The water trap (19) is located inside the sweeping well (3).
2. The sewage cleaning well according to claim 1, characterized in that, The filter screen (18) is a stainless steel grid, and the aperture of the stainless steel grid is between 4 and 7 mm.
3. The sewage cleaning well according to claim 1, characterized in that, The drainage ditch (16) includes a concrete base plate (161) and side panels (162). The side panels (162) are made of solid concrete bricks and cement mortar. The inner surface of the drainage ditch (16) is provided with a 2-3 mm thick waterproof mortar layer. The side panels (162) are located above the supporting surface of the road structure (15), and the concrete base plate (161) is located below the supporting surface of the road structure (15).
4. The sewage cleaning well according to claim 1, characterized in that, The water trap (19) is a P-type or S-type structure, the water trap (19) is a plastic part, and the drain pipe (17) is a UPVC pipe.
5. The sewage cleaning well according to claim 1, characterized in that, A sheath (6) is provided on the outer peripheral wall of the top of the cleaning well shaft (3). A gap is left between the inner peripheral wall of the sheath (6) and the outer peripheral wall of the cleaning well shaft (3), and the gap is filled with a polyurethane mortar layer (7). A metal reinforcement (8) is also provided between the sheath (6) and the outer peripheral wall of the cleaning well shaft (3). Some parts of the metal reinforcement (8) penetrate through the bottom of the sheath (6) and extend into the gravel pad layer (4). An inner cover (9) can also be detachably installed on the top of the cleaning well shaft (3). The concrete layer (5) is also provided with a concrete annular base (10), and an outer well ring (11) and an inner well seat (12) are fixed on the concrete annular base (10). The outer well ring (11) and the inner well seat (12) are both annular structures and cast iron parts. A steel fiber reinforced concrete well cover (13) is assembled in the inner well seat (12). A concrete filling ring (14) is also provided in the gap between the outer well ring (11) and the inner well seat (12). The cross-section of the concrete filling ring (14) is a right triangle.
6. The sewage cleaning well according to claim 5, characterized in that, The inner cover (9) has an integrally formed annular mesh basket (91) arranged downwards in the middle, and the bottom surface of the inner cover (9) is provided with an inner ring (92) that abuts against the inner peripheral wall of the cleaning well cylinder (3).
7. The sewage cleaning well according to claim 5, characterized in that, The metal reinforcement (8) includes a ring (81), multiple fixing bolts (82) and multiple anchor rods (83). The fixing bolts (82) are threaded through the ring (81). The ring (81) is sleeved on the outer peripheral wall of the cleaning well barrel (3) and locked by the fixing bolts (82). The anchor rods (83) are arranged laterally and their main bodies are located in the crushed stone cushion layer (4). The inner end of the anchor rod (83) penetrates the bottom of the sheath tube (6) and is threaded onto the ring (81). The anchor rods (83) are perpendicular to the ring (81).
8. The sewage cleaning well according to claim 7, characterized in that, The number of the anchor rods (83) is between 3 and 10, the number of the fixing bolts (82) is between 4 and 8, and the fixing bolts (82) are located between adjacent anchor rods (83).
9. The sewage cleaning well according to claim 7, characterized in that, A threaded sleeve (84) is provided on the outer peripheral wall of the ring (81), and the inner end of the rebar rod (83) is threadedly assembled in the threaded sleeve (84).
10. The sewage cleaning well according to claim 7, characterized in that, The metal reinforcement (8) is made of stainless steel, and the length of the rebar rod (83) extending into the gravel pad layer (4) is between 50 and 100 centimeters.