A drainage pipe and drainage structure

Abstract

This application relates to the field of drainage technology, and in particular to a drainage pipe and drainage structure. The drainage pipe includes at least two sequentially connected splice pipes, each splice pipe comprising a pipe, a retaining ring, and a connecting cylinder. The pipe has an inlet and an outlet at its two ends, respectively. The retaining ring is coaxially and fixedly connected to the end of the pipe with the inlet, and the connecting cylinder is coaxially and fixedly connected to the retaining ring. The inner diameter of the connecting cylinder is larger than the outer diameter of the pipe. The connecting cylinder is used to embed the end of an adjacent pipe with an outlet. A flexible part is connected and sealed between the outer circumference of the pipe embedded in the connecting cylinder and the inner circumference of the connecting cylinder, and the end of the pipe abuts against the retaining ring. This application reduces the probability of pipe leakage by providing a flexible part and sealing between the pipe and the connecting cylinder. At the same time, the outer diameter of the pipe is smaller than the inner diameter of the connecting cylinder, reducing the probability of collision and wear between the pipe and the connecting cylinder, thereby improving the service life of the pipe and the connecting cylinder.

Description

Technical Field

[0001] This application relates to the field of drainage technology, and in particular to a drainage pipe and drainage structure. Background Technology

[0002] Inspection wells are frequently used in municipal engineering projects. As part of the urban drainage system, they help prevent blockages in underground drainage pipes. Generally, an inspection well is installed approximately every 30 meters along the road, with drainage pipes running between adjacent wells. These drainage pipes are constructed by connecting multiple smaller pipes to facilitate production and transportation.

[0003] Currently, small pipes are commonly connected by flanges or sockets. However, when turbulence forms in the drainage pipes during rainy weather, or when vehicles pass over the road, especially large vehicles, the drainage pipes under the road and on the ground will vibrate, causing different amplitudes of vibration between multiple small pipes. Over time, this may cause leakage at the connection points between the small pipes. Summary of the Invention

[0004] To reduce the probability of pipe leakage, this application provides a drainage pipe and drainage structure.

[0005] Firstly, the drainage pipe provided in this application adopts the following technical solution:

[0006] A drainage pipe includes at least two sequentially connected splice pipes, each splice pipe comprising a pipe, a retaining ring, and a connecting cylinder. The pipe has an inlet and an outlet at its two ends, respectively. The retaining ring is coaxially and fixedly connected to the end of the pipe with the inlet. The connecting cylinder is coaxially and fixedly connected to the retaining ring. The inner diameter of the connecting cylinder is larger than the outer diameter of the pipe. The connecting cylinder is used to allow the end of an adjacent pipe with the outlet to be inserted. A flexible portion is connected and sealed between the outer circumference of the pipe inserted into the connecting cylinder and the inner circumference of the connecting cylinder, and the end of the pipe abuts against the retaining ring.

[0007] By adopting the above technical solution, when the pipe is embedded in the connecting cylinder and abuts against the retaining ring, it indicates that the pipe has been successfully embedded in the connecting cylinder. By setting a flexible part between the pipe and the connecting cylinder and sealing it, the probability of pipe leakage is reduced. Furthermore, the inner diameter of the connecting cylinder is larger than the outer diameter of the pipe. When the flexible part is squeezed, its deformation reduces the probability of direct collision between the pipe and the inner circumference of the connecting cylinder, thereby improving the service life of the drainage pipe.

[0008] Preferably, the end face of the pipe embedded in the connecting cylinder is provided with an abutment surface, the distance from the abutment surface to the pipe axis gradually increases along the end face away from the pipe, and the abutment surface fits the retaining ring.

[0009] By adopting the above technical solution, when vibration occurs, the contact area between the pipe and the retaining ring is increased to reduce the pressure of the retaining ring on the pipe, thereby reducing the probability of wear on the pipe and the retaining ring and improving the service life of the drainage pipe.

[0010] Preferably, the flexible part is provided with a pressure chamber, and the inner peripheral wall of the pipe is provided with an inlet hole and an outlet hole that communicate with the pressure chamber. A first one-way valve is provided in the inlet hole, and the side of the first one-way valve away from the pressure chamber is the inlet. A second one-way valve is provided in the outlet hole, and the side of the second one-way valve away from the pressure chamber is the outlet.

[0011] By adopting the above technical solution, when vibration occurs between the pipe and the connecting cylinder, causing the flexible part to be squeezed, the pressure in the pressure chamber changes accordingly. When the pressure inside the pressure chamber is less than the pressure inside the pipe, the water in the pipe enters the pressure chamber through the first one-way valve. When the pressure inside the pressure chamber is greater than the pressure inside the pipe, the water in the pipe enters the pipe through the second one-way valve. Due to the strong viscosity of the sludge, the sludge attached to the pipe is flushed away, reducing the probability of sludge adhesion.

[0012] Preferably, a protrusion is fixedly connected to the inner wall of the pipe, the protrusion covers the water inlet hole, and the protrusion is provided with a clearance hole communicating with the water inlet hole, the axis of the clearance hole being perpendicular to the axis of the pipe.

[0013] By adopting the above technical solution, the sludge is easy to settle. When the sludge flows in the pipe, it may settle on the inner wall of the pipe. The protrusion reduces the probability of sludge settling in the water inlet and causing blockage, thereby improving the water intake and spraying efficiency when the pressure chamber vibrates, and thus reducing the probability of sludge adhering to the inner wall of the pipe.

[0014] Preferably, a filter screen is embedded in the avoidance hole.

[0015] By adopting the above technical solution, the probability of impurities in the water flow in the pipeline entering the avoidance hole is reduced, thereby reducing the probability of blockage of the avoidance hole and water inlet hole.

[0016] Preferably, a guide block is fixedly connected to the inner wall of the pipe, the guide block covers the water outlet, and a guide groove is provided on the surface of the guide block near the water outlet. The guide groove communicates with the water outlet and faces the gap between the pipe and the retaining ring.

[0017] By adopting the above technical solution, there is a gap between the pipe and the retaining ring, which is prone to sludge deposition. By using a guide channel to reach the gap between the pipe and the retaining ring, the sludge can be flushed away by water sprayed from the guide channel, reducing the probability of sludge adhesion.

[0018] Preferably, the surface of the guide block near the water inlet is provided with a guide surface, and the distance from the guide surface to the pipe axis gradually decreases as it moves away from the water inlet.

[0019] By adopting the above technical solution, the resistance of the guide block to water and the interception of impurities in the water flow by the guide block are reduced, thereby reducing the probability of blockage in the pipeline.

[0020] Preferably, the cross-sectional area of ​​the guide channel near the water outlet is greater than the cross-sectional area of ​​the guide channel away from the water outlet.

[0021] By adopting the above technical solution, the volume of the pressure chamber is determined, and the inlet and outlet are respectively equipped with a first one-way valve for water inlet and a second one-way valve for water outlet. When the pressure inside the pressure chamber is greater than the pressure inside the pipe, when water is sprayed into the pipe through the guide channel, the cross-sectional area of ​​the guide channel near the outlet is greater than the cross-sectional area of ​​the guide channel away from the outlet, so as to increase the water outlet speed of the guide channel, so that the water flowing out of the guide channel can flush the inner wall of the pipe, thereby reducing the probability of sludge adhering to the inner wall of the pipe.

[0022] Secondly, the drainage structure provided in this application adopts the following technical solution:

[0023] Preferably, the device includes a manhole, a drain pipe, and an outlet pipe. The manhole has an outlet hole for the outlet pipe to be inserted into, and the manhole also has an inlet hole for the end of the pipe opposite to the connecting cylinder to be inserted into, and the axis of the inlet hole is higher than the axis of the outlet hole.

[0024] By adopting the above technical solution, the inspection well facilitates regular inspection or maintenance of the pipeline. The inspection well is connected to the pipeline via an outlet pipe, and the axis of the inlet hole is higher than the axis of the outlet hole. This allows the water flowing out of the pipe embedded in the inlet hole to fall, converting the water's potential energy into kinetic energy to increase the speed of the water entering the outlet pipe, thereby reducing the probability of impurities and silt in the water adhering to the pipeline.

[0025] Preferably, the inspection well includes a well casing and a well base, the well casing being connected to the well base, and the height of the well base gradually decreasing along the water inlet to the water outlet.

[0026] By adopting the above technical solution, the water flows into the outlet pipe as the height changes, thereby reducing the energy loss caused by the water flow directly impacting the bottom of the inspection well. This allows the water to maintain greater kinetic energy when entering the outlet pipe, thus reducing the probability of silt adhering inside the pipe.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By setting a flexible part and sealing it between the pipe and the connecting sleeve, the probability of pipe leakage is reduced. At the same time, the outer diameter of the pipe is smaller than the inner diameter of the connecting sleeve, so as to reduce the probability of collision and wear between the pipe and the connecting sleeve, thereby improving the service life of the pipe and the connecting sleeve.

[0029] 2. The flexible part is equipped with a pressure chamber. When the flexible part deforms and a pressure difference exists between the pressure chamber and the pipeline, water sprayed through the guide channel will flush the connection between the pipeline and the retaining ring to reduce the probability of sludge adhering to the pipeline.

[0030] 3. The protrusions extend from the inner wall of the pipe to reduce the probability of the clearance hole and water inlet being blocked by impurities. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the drainage pipe in an embodiment of this application.

[0032] Figure 2 This is a cross-sectional view of the drain pipe according to an embodiment of this application.

[0033] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0034] Figure 4 This is an overall schematic diagram of the drainage structure in an embodiment of this application.

[0035] Figure 5 This is a cross-sectional view of the drainage structure according to an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 11. Connecting pipe; 12. Pipe; 121. Inlet; 122. Outlet; 123. Contact surface; 124. Inlet hole; 1241. First check valve; 125. Outlet hole; 1251. Second check valve; 13. Retaining ring; 14. Connecting cylinder; 2. Flexible part; 21. Pressure chamber; 22. First hole; 23. Second hole; 3. Protrusion; 31. Clearance hole; 32. Filter screen; 4. 41. Guide block; 42. Guide groove; 5. Inspection well; 51. Well shaft; 511. Cylinder body; 5111. First through hole; 5112. Second through hole; 512. First ring beam; 5121. Water inlet through hole; 5122. Ring groove; 5123. Embedded groove; 513. Second ring beam; 5131. Water outlet through hole; 52. Well base; 6. Water outlet pipe; 7. Water-swellable sealing ring; 8. Rubber sealing ring. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0038] Reference Figure 1This application discloses a drainage pipe, including at least two sequentially connected splice pipes 11. Each splice pipe 11 includes a pipe 12, a retaining ring 13, and a connecting sleeve 14. The openings at both ends of the pipe 12 are an inlet 121 and an outlet 122, respectively. The inner diameter of the retaining ring 13 is equal to the inner diameter of the pipe 12. The retaining ring 13 is coaxially and integrally formed on the end face of the pipe 12 where the inlet 121 is located, and the outer edge of the retaining ring 13 is inclined away from the end face of the pipe 12. The outer diameter of the connecting sleeve 14 is equal to the outer diameter of the retaining ring 13. The connecting sleeve 14 is coaxially and integrally formed on the surface of the retaining ring 13 away from the pipe 12. The inner diameter of the connecting sleeve 14 is larger than the outer diameter of the pipe 12 to facilitate the insertion of the pipe 12 into the connecting sleeve 14.

[0039] The end face of the pipe 12 embedded in the connecting cylinder 14 is provided with an abutment surface 123. The distance from the abutment surface 123 to the axis of the pipe 12 gradually increases as it moves away from the end face of the pipe 12. The abutment surface 123 fits against the retaining ring 13 to increase the contact area between the retaining ring 13 and the abutment surface 123.

[0040] A flexible part 2 is coaxially fixedly connected to the outer peripheral wall of the pipe 12 embedded in the connecting cylinder 14. The flexible part 2 is made of rubber, and the inner and outer circumferences of the flexible part 2 respectively abut against the pipe 12 and the connecting cylinder 14 to seal between the pipe 12 and the connecting cylinder 14.

[0041] Reference Figure 1 and Figure 2 The flexible part 2 is provided with pressure chambers 21 spaced apart along its circumference. The flexible part 2 has a first hole 22 and a second hole 23 connecting the pressure chambers 21. The inner wall of the pipe 12 is provided with an inlet hole 124 and an outlet hole 125 connecting the first hole 22 and the second hole 23. The distance from the inlet hole 124 to the inlet 121 is less than the distance from the outlet hole 125 to the inlet 121. A first one-way valve 1241 is fixed in the inlet hole 124, and a second one-way valve is fixed in the outlet hole 125. The side of the first one-way valve 1241 away from the pressure chamber 21 is an opening, and the side of the second one-way valve 1251 away from the pressure chamber 21 is an outlet, so that water in the pipe 12 enters the pressure chamber 21 through the inlet hole 124 and flows out through the outlet hole 125.

[0042] To reduce the probability of sediment such as silt falling into the inlet hole 124 inside the pipe 12, a protrusion 3 is fixedly connected to the inner wall of the pipe 12. The protrusion 3 covers the inlet hole 124, and the protrusion 3 has a clearance hole 31 that communicates with the inlet hole 124. The axis of the clearance hole 31 is perpendicular to the axis of the pipe 12. The protrusion 3 is hemispherical, so as to reduce the resistance of water flow and the probability of silt adhering to the surface of the protrusion 3 through the arc surface of the protrusion 3. A filter screen 32 is embedded at one end of the clearance hole 31 near the axis of the pipe 12, and the outer periphery of the filter screen 32 is fixedly connected to the inner periphery of the clearance hole 31.

[0043] To ensure that the water flowing from the outlet 125 flushes the silt at the connection between the pipe 12 and the retaining ring 13, a guide block 4 is fixedly connected to the inner wall of the pipe 12. The surface of the guide block 4 near the inlet 121 has a guide surface 42. The distance from any point on the guide surface 42 to the axis of the pipe 12 gradually decreases as the point moves away from the inlet 121. The surface of the guide block 4 away from the inlet 121 has a guide groove 41 connecting to the outlet 125. The cross-sectional area of ​​the guide groove 41 near the outlet 125 is larger than the cross-sectional area away from the outlet 125, resulting in a higher velocity of water exiting the guide groove 41, thus facilitating the flushing of the silt from the inner wall of the pipe 12. Furthermore, the end of the guide channel 41 away from the outlet 122 faces the gap between the pipe 12 and the baffle ring 13, so that the water flowing out of the guide channel 41 can flush away the silt in the gap between the pipe 12 and the baffle ring 13.

[0044] In this embodiment, multiple pressure chambers 21, first hole 22, second hole 23, water inlet hole 124, water outlet hole 125, protrusion 3, clearance hole 31, guide block 4, guide groove 41, first one-way valve 1241 and second one-way valve 1251 are provided, and the number of them is the same and they are arranged one by one. Moreover, the multiple pressure chambers 21 are located below the horizontal plane where the axis of the pipe 12 is located and are distributed at intervals along the axis of the pipe 12.

[0045] The implementation principle of a drainage pipe according to an embodiment of this application is as follows: a flexible part 2 is provided and sealed between the outer periphery of the pipe 12 and the inner periphery of the connecting cylinder 14, and a sealing ring is also provided on both sides of the flexible part 2 along the axial direction of the pipe 12, so as to reduce the probability of water in the pipe 12 leaking through the pipe 12 and the connecting cylinder 14. Meanwhile, a pressure chamber 21 is provided inside the flexible part 2. The vibration of the pipe 12 causes a pressure difference between the inside and outside of the pressure chamber 21. When the pressure inside the pipe 12 is greater than the pressure inside the pressure chamber 21, the water inside the pipe 12 enters the pressure chamber 21 through the first one-way valve 1241. When the pressure inside the pipe 12 is less than the pressure inside the pressure chamber 21, the water in the pressure chamber 21 flows into the guide groove through the second one-way valve 1251. Since the cross-sectional area of ​​the guide groove away from the pressure chamber 21 is smaller than the cross-sectional area of ​​the guide groove near the pressure chamber 21, the water flows out of the guide groove 41 at a faster speed. This allows the water flowing out of the guide groove 41 to flush the sludge on the inner wall of the pipe 12, thereby reducing the probability of sludge accumulation and blockage in the pipe 12.

[0046] This application also discloses a drainage structure.

[0047] Reference Figure 4 and Figure 5The drainage structure includes the aforementioned drainage pipe, as well as inspection well 5 and outlet pipe 6. Inspection well 5 includes well cylinder 51 and well base 52. Well cylinder 51 includes cylinder body 511, first ring beam 512 and second ring beam 513. Both first ring beam 512 and second ring beam 513 are made of concrete. The inner circumference of first ring beam 512 is provided with water inlet hole 5121, and the inner circumference of second ring beam 513 is provided with water outlet hole 5131. The height of well base 52 gradually decreases from water inlet hole 5121 to water outlet hole 5131. The lower end of cylinder body 511 is inclined and fixedly connected to the upper surface of well base 52. The cylinder wall of cylinder body 511 is provided with first through hole 5111 and second through hole 5112 located on both sides of the axis of well cylinder 51. The axis of first through hole 5111 is higher than the axis of second through hole 5112. The first ring beam 512 is coaxially fixedly embedded in the first through hole 5111, the second ring beam 513 is coaxially fixedly embedded in the second through hole 5112, one end of the pipe 12 that is close to the cylinder 511 and away from the connecting cylinder 14 is coaxially fixedly embedded in the first ring beam 512, and one end of the water outlet pipe 6 is coaxially fixedly embedded in the second ring beam 513.

[0048] Both the first ring beam 512 and the second ring beam 513 have coaxially arranged annular grooves 5122 on their inner circumferences. The surfaces of the first ring beam 512 and the second ring beam 513 that are far apart from each other have coaxially arranged grooves 5123. A water-swellable sealing ring 7 is embedded in the annular groove 5122, and a rubber sealing ring 8 is embedded in the groove 5123. The distance from the annular groove 5122 to the axis of the well shaft 51 is less than the distance from the groove 5123 to the axis of the well shaft 51. When water leaks into the water-swellable sealing ring 7, the volume of the water-swellable sealing ring 7 increases to achieve a sealing and water-stopping effect. The rubber sealing ring 8 reduces the probability of external moisture entering the water-swellable annular groove 5122 of the inspection well 5, improving the sealing performance of the inspection well 5. The groove 5123 further enhances the stability of the rubber sealing ring 8, while simultaneously reducing the probability of leakage from the inspection well 5.

[0049] The implementation principle of the drainage structure in this embodiment is as follows: by making the axis of the inlet hole 5121 higher than the axis of the outlet hole 5131, and by gradually decreasing the height of the well base 52 from the inlet hole 5121 to the outlet hole 5131, the potential energy of the water flowing into the pipe 12 is converted into kinetic energy after passing through the inspection well 5, thereby increasing the speed of the water flowing into the outlet pipe 6 and reducing the probability of silt adhesion in the pipe 12. At the same time, the water-swellable sealing ring 7 and the rubber sealing ring 8 improve the sealing performance of the inspection well 5 and reduce the probability of leakage.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drain pipe, characterized by: The application relates to a pipeline comprising at least two sequentially connected spliced pipes (11), the spliced pipe (11) comprising a pipe (12), a baffle ring (13) and a connecting cylinder (14), the openings at the two ends of the pipe (12) are respectively a water inlet (121) and a water outlet (122), the baffle ring (13) is coaxially fixedly connected to one end of the pipe (12) provided with the water inlet (121), the connecting cylinder (14) is coaxially fixedly connected to the baffle ring (13), the inner diameter of the connecting cylinder (14) is larger than the outer diameter of the pipe (12), the connecting cylinder (14) is used for embedding one end of an adjacent pipe (12) provided with the water outlet (122), a flexible part (2) is connected and sealed between the outer periphery of the pipe (12) embedded in the connecting cylinder (14) and the inner periphery of the connecting cylinder (14), and the end of the pipe (12) abuts against the baffle ring (13). The flexible part (2) is provided with a pressure cavity (21), the inner periphery wall of the pipe (12) is provided with a water inlet hole (124) and a water outlet hole (125) communicating with the pressure cavity (21), the water inlet hole (124) is internally provided with a first one-way valve (1241), and the side, away from the pressure cavity (21), of the first one-way valve (1241) is an inlet; the water outlet hole (125) is internally provided with a second one-way valve (1251), and the side, away from the pressure cavity (21), of the second one-way valve (1251) is an outlet; The inner wall of the pipe (12) is fixedly connected with a flow guide block (4), the flow guide block (4) covers the water outlet hole (125), the surface of the flow guide block (4) close to the water outlet (122) is provided with a flow guide groove (41), the flow guide groove (41) communicates with the water outlet hole (125), and the flow guide groove (41) is directed to the gap between the pipe (12) and the baffle ring (13).

2. A drain according to claim 1, characterised in that: The end surface of the pipe (12) embedded in the connecting cylinder (14) is provided with an abutting surface (123), the distance from the abutting surface (123) to the axis of the pipe (12) gradually increases along the end surface of the pipe (12) away from the end surface, and the abutting surface (123) is attached to the baffle ring (13).

3. A drain according to claim 1, wherein: The inner wall of the pipe (12) is fixedly connected with a protruding block (3), the protruding block (3) covers the water inlet hole (124), the protruding block (3) is provided with an avoiding hole (31) communicating with the water inlet hole (124), and the axis of the avoiding hole (31) is perpendicular to the axis of the pipe (12).

4. A drain according to claim 3, wherein: A filter screen (32) is embedded in the avoiding hole (31).

5. A drain according to claim 1, wherein: The surface of the flow guide block (4) close to the water inlet (121) is provided with a guide surface (42), and the distance from the guide surface (42) to the axis of the pipe (12) gradually decreases away from the water inlet (121).

6. A drain according to claim 1, wherein: The cross-sectional area of one end of the flow guide groove (41) close to the water outlet hole (125) is larger than the cross-sectional area of the other end of the flow guide groove (41) away from the water outlet hole (125).

7. Drainage structure comprising a manhole (5), characterized in that: The drain pipe according to any one of claims 1-6, further comprising a water outlet pipe (6), wherein the inspection well (5) is provided with a water outlet through hole (5131) for embedding the water outlet pipe (6), and the inspection well (5) is further provided with a water inlet through hole (5121) for embedding one end of the pipe (12) away from the connecting cylinder (14), and the axis of the water inlet through hole (5121) is higher than the axis of the water outlet through hole (5131).

8. The drainage structure of claim 7, wherein: The inspection well (5) comprises a well shaft (51) and a well base (52), the well shaft (51) is connected to the well base (52), and the height of the well base (52) gradually decreases from the water inlet through hole (5121) to the water outlet through hole (5131).

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