Linear bilge well launder made of HDPE (high-density polyethylene) pipe
By using HDPE pipes to make linear sewage well flow troughs, combined with prefabricated wells and HDPE drainage pipes, the bottom groove and U-shaped flow trough are formed, which solves the problems of slow construction speed and poor integrity in the existing technology, and achieves efficient construction and long-term use.
Patent Information
- Application Number
- CN202421764395.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The existing linear sewage well trough process is complex, the construction speed is slow, and the integrity is poor, which can easily cause sediment silt and leakage at the pipe wall interface.
The linear sewage well flow trough is made using HDPE pipes. The combination of prefabricated wells and HDPE drainage pipes is used to form a bottom groove and a U-shaped flow trough, reducing the mold support and mold removal procedures, and using a sealing structure to prevent leakage.
It improves construction speed, reduces material and labor costs, reduces leakage points, enhances the integrity and flowability of the flow trough, and extends the service life of the well.
Smart Images
Figure CN223003500U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipeline construction, and particularly relates to a straight sewage well chute made of HDPE pipes. Background Art
[0002] With the progress of technology and the development of construction technology, HDPE (high-density polyethylene) corrugated drain pipes are increasingly used in the construction of outdoor drainage pipelines due to their light weight, convenient construction, and strong fluidity of the pipe inner wall. The popularization of factory prefabrication enables outdoor sewage inspection wells to also use precast concrete wells instead of the cumbersome in-situ casting process, which is not only green and environmentally friendly but also shortens the construction period. The combination of the two has greatly improved the construction progress. Due to technological requirements, straight sewage wells need to be provided with bottom chutes, and the chute technology still uses formwork-supported in-situ concrete or bricklaying and plastering, which greatly affects the construction speed of the external network, and the integrity of the chute is poor, easily causing sediment accumulation and leakage at the pipe wall joints.
[0003] Therefore, an improved technical solution is needed to address the above deficiencies in the prior art. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a straight sewage well chute made of HDPE pipes, which reduces the procedures of formwork support and removal, reduces material costs and labor costs, reduces leakage points, and improves the construction speed at the same time.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A straight sewage well chute made of HDPE pipes, comprising a precast well and an HDPE drain pipe passing through the precast well. The HDPE drain pipe is provided with a bottom chute in the precast well, and the bottom chute is formed by the remaining part after removing 50% - 75% of the circumferential surface from the upper part of the HDPE drain pipe; a chute with a U-shaped bottom is arranged in the precast well, and the chute is fixedly connected to the HDPE drain pipe; a sealing structure is arranged at the junction of the HDPE drain pipe and the precast well.
[0007] Further, the minimum distance from both ends of the bottom chute to the inner wall of the precast well is 2 cm - 5 cm.
[0008] Further, the chute includes a U-shaped bottom and slopes on both sides of the U-shaped bottom, and the side of the slope in contact with the bottom chute is at a lower position.
[0009] Further, the side of the slope in contact with the bottom chute is flush with the top of the bottom chute, and the side of the slope in contact with the precast well wall is flush with the height of the HDPE pipe.
[0010] Furthermore, the chute is formed by the solidification of C15 concrete.
[0011] Furthermore, the sealing structure includes a sealing ring disposed between the HDPE drain pipe and the outer wall of the precast well, and a sealing block disposed between the HDPE drain pipe and the inner wall of the precast well.
[0012] Furthermore, the sealing structure is formed by the solidification of M10 mortar.
[0013] The process principle of the present utility model is as follows: According to the size of the precast sewage inspection well, 50% - 75% of the HDPE corrugated pipe is cut off as the bottom chute of the well bottom. Concrete is poured around the bottom chute pipe and a slope is made.
[0014] The beneficial effects of the present utility model are as follows:
[0015] The present utility model uses an HDPE corrugated pipe to make a straight precast concrete well chute, which not only speeds up the construction progress, but also saves materials and labor, reducing costs. Moreover, since the chute and the HDPE drain pipe form an integral whole, the fluidity inside the well is better, sediment deposition is not easily caused, and the well is clean, beautiful and has good integrity. The sewage flows through the bottom chute, and under normal circumstances, the sewage will not directly contact the inspection well, extending the service life of the well.
[0016] Compared with the traditional formwork-supported in-situ concrete, the procedures of formwork support and removal are reduced, the material cost and labor cost are reduced, the construction speed is accelerated, and the construction period is shortened. Without the use of formwork, it fully meets the requirements of existing green construction. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. Among them:
[0018] Figure 1 is the schematic front sectional structure view of the embodiment of the present utility model.
[0019] Figure 2 is the schematic front sectional structure view of the embodiment of the present utility model.
[0020] Figure 3 is the schematic top view structure view of the embodiment of the present utility model.
[0021] In the drawings: 1 - precast well, 2 - chute, 3 - HDPE drain pipe, 4 - bottom chute, 5 - remaining part, 6 - sealing structure. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] The technical solutions in the embodiments of the present utility model will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model belong to the protection scope of the present utility model.
[0023] In the description of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and does not require the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "connected" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.
[0024] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.
[0025] As Figures 1 to 3 shown, a straight sewage well chute made of HDPE pipes includes a precast well 1 and an HDPE drainage pipe 3 passing through the precast well 1. A bottom chute 4 is provided in the precast well 1 for the HDPE drainage pipe 3. The bottom chute 4 is formed by the remaining part after cutting 50% - 75% of the circumferential surface from the upper part of the pipe of the HDPE drainage pipe 3. A chute 2 with a U-shaped bottom is provided in the precast well 1, and the chute 2 is fixedly connected to the HDPE drainage pipe 3. A sealing structure 6 is provided at the junction of the HDPE drainage pipe 3 and the precast well 1.
[0026] Furthermore, the minimum distance from both ends of the bottom chute 4 to the inner wall of the precast well 1 is 2 cm - 5 cm; Figure 1 、 Figure 3 The part of the HDPE drainage pipe 3 that is not cut in the precast well 1 is schematically marked as the remaining part 5. Preferably, the width of the remaining part 5 is 2 cm - 5 cm. The present utility model does not adopt the method of opening holes along the wall of the precast well 1, reserving positions for subsequent sealing work, which can avoid difficulties in pipe sealing and poor integrity of the cast concrete.
[0027] Furthermore, as Figure 2As shown in the figure, the chute 2 includes a U-shaped bottom and slopes on both sides of the U-shaped bottom. The side of the slope in contact with the bottom chute 4 is at a lower position, so that rainwater and other road surface water falling from the wellhead can flow into the bottom chute 4. Preferably, the side of the slope in contact with the bottom chute 4 is flush with the top of the bottom chute 4, and the side of the slope in contact with the wall of the precast well 1 is flush with the height of the HDPE pipe, so that debris is not easily deposited on the slope.
[0028] Furthermore, the chute 2 is formed by the solidification of C15 concrete; as Figure 3 shown in the figure, the sealing structure 6 includes a sealing ring provided between the HDPE drain pipe 3 and the outer wall of the precast well 1 and a sealing block provided between the HDPE drain pipe 3 and the inner wall of the precast well 1. The sealing structure 6 is formed by the solidification of M10 mortar. By using the precast well 1 of the present utility model, the number of interfaces that need to be processed at the joint of the well wall and the HDPE drain pipe 3 is reduced by more than 50% compared with the traditional method, reducing the leakage points and also improving the construction speed.
[0029] In the construction of the external drainage network, the present utility model uses HDPE corrugated pipes to make the straight precast concrete well chute 2, which not only speeds up the construction progress, but also saves materials and labor, reduces costs, and the water tightness test also passes at one time, achieving a very good effect of cost reduction.
[0030] The present utility model is applicable to straight precast concrete or brick sewage wells in the park or community. The construction process of the present utility model is as follows:
[0031] 1. Measuring and setting out: Map the positions of the pipelines and wells to the actual site according to the positions marked on the drawings, and make marks on the ground with lime.
[0032] 2. Groove excavation: Use an excavator to excavate the groove along the lime marking line, and measure while excavating.
[0033] 3. Laying sand at the bottom of the pipe: Lay sand at the bottom of the pipe according to the requirements of the drawings, and the thickness of the laid sand should meet the design requirements.
[0034] 4. Pipeline laying and connection: Pass the entire HDPE drain pipe 3 through the well without disconnecting to ensure the integrity of the chute 2. Before the pipeline passes through the well hole, the burrs and remaining concrete around the hole of the precast well 1 should be cleaned to avoid scratching the pipeline during pipeline laying.
[0035] 5. Pipeline cutting: To ensure the accuracy of cutting, the HDPE drain pipe 3 is cut inside the precast well 1. The minimum distance from the cutting point to the pipe wall is 2 cm to 5 cm, and the cut pipeline is 50% - 75% of the pipe diameter, and the cutting surface is repaired smoothly. The minimum distance from the cutting point to the pipe wall is the four corner positions of the cut pipeline.
[0036] 6. Backfill with sand and soil: Backfill the trench excavated in Step 2. The height of the sand backfill should comply with the requirements of the drawings and the atlas. The backfill soil should be free of boulders and should be compacted layer by layer. Do not backfill the operation space reserved for plugging on the outer side of the wall of the precast well 1 through which the HDPE drainage pipe 3 passes. Backfill after the pouring and plugging are completed. Since both the contact between the HDPE drainage pipe 3 and the concrete of the chute 2 and the contact between the HDPE drainage pipe 3 and the plugging mortar are hard contacts, any disturbance to the pipe will cause loosening of the contact surface and is likely to cause water seepage. Therefore, pouring and plugging the pipe wall first and then backfilling with sand and soil will reduce the loosening between the pipe and the concrete and mortar surfaces. Finally, only backfilling the small part of the reserved operation space for plugging will greatly reduce the disturbance to the HDPE drainage pipe 3 and thus reduce the possibility of water seepage.
[0037] 7. Pour the concrete of the chute 2: Pour the C15 concrete into the outer side of the pipe wall using a cement bucket. Pour as little concrete as possible each time, which makes it easier to tamp the concrete. Note that when pouring the concrete, it must be stirred evenly to avoid sewage leakage in case the pipe is damaged. The side in contact with the cut pipe wall is flush with the pipe wall, and the side in contact with the well wall is flush with the height of the pipe, so that the formed slope is not easy to deposit debris. Pour the concrete of the chute 2 inside the well after the backfilling in Step 6. After pouring, plug the holes between the pipe and the well wall, which can reduce the disturbance to the pipe and avoid leakage.
[0038] 8. Plug the well wall and the pipe: Plugging the well wall and the pipe is very crucial. Use M10 mortar to smear and level it. After it dries, each joint part should be inspected. If there are cracks, they should be repaired to reduce the possibility of water leakage and seepage.
[0039] 9. Finished product protection and acceptance: Accept the poured concrete and the plugging between the pipe and the well wall. If there are cracks or other phenomena, they should be repaired in time. The completed inspection well should be covered and plugged in time to prevent sundries and personnel from falling into the well. In practice, a water tightness test is carried out on it, and the water tightness test also passes at one time, achieving very good results.
[0040] The labor allocation during the construction process is as follows: 1 team leader (who can measure and set out lines), 1 bricklayer, and 1 pipe fitter. The main construction materials are C15 concrete used for building the chute, with a consumption of about 13 m 3 ; M10 cement mortar used for plugging joints, with a consumption of about 0.2 m 3 .
[0041] Compared with the traditional formwork support for pouring concrete in inspection wells, the material cost of the formwork and the cost of the additional pipes used are almost the same. However, the existing method has obvious effect in reducing labor costs. Through on-site measurement, each straight well can save 0.8 man-hours. There are 320 inspection wells in a certain park, so a total of 320×0.8 = 256 man-hours are saved. Calculated at the market price of 300 yuan per man-hour, the labor cost can be saved by 256×300 = 76,800 yuan. And due to the improvement of the process, the water tightness test and the subsequent labor costs for repair and maintenance are reduced. Approximately 40 man-hours can be saved in this regard, and the labor cost can be saved by 40×300 = 12,000 yuan. In summary, the present utility model can save a labor cost of 76,800 + 12,000 = 88,800 yuan, and the cost-saving effect is obvious.
[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model are within the scope of protection of the pending claims of the present utility model.
Claims
1. A linear sewage well flow channel made of HDPE pipe, characterized by: The invention comprises a prefabricated well (1) and a HDPE drainage pipe (3) penetrating the prefabricated well (1), wherein the HDPE drainage pipe (3) is provided with a bottom groove (4) in the prefabricated well (1), wherein the bottom groove (4) is formed by the remaining portion of the upper portion of the HDPE drainage pipe (3) after cutting off 50% to 75% of the circumference; a flow groove (2) having a U-shaped bottom is provided in the prefabricated well (1), wherein the flow groove (2) is fixedly connected to the HDPE drainage pipe (3); the flow groove (2) comprises a U-shaped bottom and slopes located on both sides of the U-shaped bottom, wherein the side of the slope in contact with the bottom groove (4) is at a lower position; a blocking structure (6) is provided at the junction of the HDPE drainage pipe (3) and the prefabricated well (1); the blocking structure (6) comprises a blocking ring provided on the outer wall of the HDPE drainage pipe (3) and the prefabricated well (1), and a blocking block provided on the inner wall of the HDPE drainage pipe (3) and the prefabricated well (1).
2. The linear sewage well flow channel made of HDPE pipe according to claim 1, characterized in that: The minimum distance between the two ends of the bottom groove (4) and the inner wall of the prefabricated well (1) is 2 cm to 5 cm.
3. The linear sewage well flow channel made of HDPE pipe according to claim 1, characterized in that: The side of the slope that contacts the bottom trough (4) is flush with the top of the bottom trough (4), and the side of the slope that contacts the wall of the prefabricated well (1) is flush with the height of the HDPE drainage pipe (3).
4. The linear sewage well flow channel made of HDPE pipe according to claim 1, characterized in that: The flow channel (2) is formed by solidification of C15 concrete.
5. The linear sewage well flow channel made of HDPE pipe according to claim 1, characterized in that: The blocking structure (6) is formed by solidifying M10 mortar.