Municipal Road Backflow Prevention Drainage System and Construction Method

Abstract

A municipal road backflow prevention drainage system includes a water-blocking mechanism installed at the upper port of a drainage well. A curbstone is positioned above the water-blocking mechanism, covering the upper inlet of the drainage well. The water-blocking mechanism includes end plates at both ends and a central shaft connecting the two end plates. Multiple water-blocking plates are circumferentially distributed along the central shaft. The water-blocking mechanism is located near the upper port of the drainage well, and the height of the central shaft is lower than the top surface of the drainage well. A groove is provided on the lower top surface of the curbstone, and a check valve is installed in the groove via a fixing pin with a torsion spring. The check valve engages with the water-blocking plates. This invention, using the above method, effectively solves the problems in the prior art, preventing sewage from flowing back onto the road surface without affecting the normal drainage of the drainage well.

Description

Technical Field

[0001] This invention relates to the field of municipal road construction technology, specifically a municipal road anti-backflow drainage system and construction method. Background Technology

[0002] Currently, drainage systems need to be installed on both sides of municipal roads. These systems are directly connected to underground drainage wells and are used to drain water from the ground during the rainy season.

[0003] When rainfall is heavy, the drainage pressure of the sewer system increases. Drainage outlets located at high points are prone to backflow due to the water flow in the sewer system, resulting in increased sewage volume on the road surface and affecting normal road use. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a municipal road anti-backflow drainage system and construction method, which can effectively solve the problems in the background art and prevent sewage in the sewer from backflowing onto the road surface without affecting the normal drainage of the drainage well.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a municipal road anti-backflow drainage system, including a water-blocking mechanism installed at the upper port of the drainage well, a curb stone provided above the water-blocking mechanism, and the curb stone covering the upper water inlet of the drainage well; The water-blocking mechanism includes end plates at both ends and a central shaft located between and connecting the two end plates. Multiple water-blocking plates are arranged circumferentially on the central shaft. The water-blocking mechanism is located near the upper port of the drainage well and the height of the central shaft is lower than the height of the top surface of the drainage well. A groove is provided on the lower top surface of the curbstone, and a check plate is installed in the groove through a fixing pin with a torsion spring. The check plate is in contact with the water baffle.

[0006] In a preferred embodiment, the curbstone includes a central curbstone, which has an arched structure. One end of the curbstone has a drainage hole for water passage, and the other end is connected and fixed to a block on one side of the drainage well through a connecting mechanism.

[0007] In a preferred embodiment, the curbstone also includes a side curbstone, which is a block structure with a vertical groove on one side wall. The vertical groove is used for the installation and positioning of the central shaft extending from the end of the water-blocking mechanism.

[0008] In a preferred embodiment, the connecting mechanism includes a base plate, at least two downward extending rods on the bottom surface of the base plate, a nut on the base plate, a vertical connecting bolt hole on one end of the curb stone, a vertical connecting bolt passing through the connecting bolt hole, the lower end of the connecting bolt extending downward to connect with the nut, and a nut also fitting on the part of the connecting bolt located in the connecting bolt hole.

[0009] In a preferred embodiment, the lower extension rod is a hollow rod with a closed lower end and an open upper end. The upper end of the lower extension rod is aligned with the screw hole of the nut, and the inner wall of the lower extension rod is provided with internal threads.

[0010] In a preferred embodiment, the substrate is embedded between the upper and lower blocks that make up the drainage well, and the lower extension rod is inserted into the longitudinal joint between two horizontally adjacent blocks.

[0011] The construction method for the aforementioned municipal road backflow prevention and drainage system includes the following steps: 1) The top surface of the drainage well is masonry blocks arranged to form longitudinal joints; 2) Use longitudinal joint grout to fill the longitudinal joints between the blocks and install the connecting mechanism so that the lower extension rod extends into the longitudinal joint and the base plate rests on the block; 3) The horizontal construction of the blockwork on one side of the drainage well is completed; 4) Apply mortar to the surface of the lower layer of blocks using horizontal joint filler, and then install the upper layer of blocks one by one. 5) Install connecting bolts through the longitudinal joints between the upper blocks, so that the lower end of the connecting bolt extends into the lower extension rod; 6) Use longitudinal joint filler to apply grout to the longitudinal joints between the upper layers of blocks; 7) Install the side curb stones on both sides of the drainage well, and then use nuts to fix the side curb stones to the blocks after the connecting bolts pass through the connecting bolt holes on the side curb stones; 8) Install the water-blocking mechanism, placing the central shafts extending from both ends of the water-blocking mechanism in the vertical groove, and install the water-blocking mechanism below the well opening of the drainage well; 9) Install multiple middle curb stones between the two side curb stones, and fix the middle curb stones in the same way.

[0012] In the preferred embodiment, during step 4), the grouting process for filling the transverse joint is such that the grouting height is higher than the top surface of the substrate and lower than the top surface of the nut, so that the substrate is embedded in the cement mortar.

[0013] The municipal road backflow prevention drainage system provided by this invention, by adopting the above method, has the following beneficial effects: (1) The water blocking mechanism adopts a one-way rotation method, which can normally discharge sewage when the drainage well is filled with water, and can prevent reverse rotation from causing sewage to backflow from the sewer system to the road surface and cause road pollution when the underground sewage volume is too large and forms a backflow. (2) The curbstone and the water-blocking mechanism together form a backflow system. The construction of the curbstone is simpler, and the water-blocking mechanism can be quickly assembled. The water-blocking mechanism can be inspected and replaced after the curbstone is removed according to actual needs. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the central curbstone structure of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure after the central curbstone of the present invention has been installed in place.

[0017] Figure 4 This is a schematic diagram of the side curbstone structure of the present invention.

[0018] Figure 5 This is a schematic diagram of the water-blocking mechanism of the present invention.

[0019] Figure 6-10 This is a schematic diagram of the structure during the construction of the drainage well side block in this invention.

[0020] In the diagram: 1. Drainage well; 2. Curbstone; 201. Drainage hole; 202. Connecting bolt hole; 203. Vertical groove; 3. Water-blocking mechanism; 3. End plate; 301. Central shaft; 302. Water-blocking plate; 4. Connecting mechanism; 5. Groove; 6. Check valve; 7. Fixing pin; 8. Block; 9. Longitudinal joint; 901. Base plate; 10. Lower extension rod; 11. Nut; 12. Longitudinal joint grout; 13. Transverse joint grout; 14. Connecting bolt; 15. Detailed Implementation

[0021] Example 1: like Figure 1 In a municipal road anti-backflow drainage system, a water-blocking mechanism 3 is installed at the upper port of the drainage well 1, and a curb stone 2 is provided above the water-blocking mechanism 3, with the curb stone 2 covering the upper water inlet of the drainage well 1. The water-blocking mechanism 3 includes end plates 301 at both ends and a central shaft 302 located between and connecting the two end plates 301. Multiple water-blocking plates 4 are arranged circumferentially on the central shaft 302. The water-blocking mechanism 3 is located near the upper port of the drainage well 1 and the height of the central shaft 302 is lower than the height of the top surface of the drainage well 1. A groove 6 is provided on the lower top surface of the curbstone 2. A check plate 7 is installed in the groove 6 through a fixing pin 8 with a torsion spring. The check plate 7 is in contact with the water baffle 4.

[0022] In the preferred scheme, such as Figure 2 , 3The curbstone 2 includes a central curbstone 2, which has an arched structure. One end of the curbstone 2 has a drainage hole 201 for water passage, and the other end is connected and fixed to the block 9 on one side of the drainage well 1 through a connecting mechanism 5.

[0023] In the preferred scheme, such as Figure 4 The curbstone 2 also includes a side curbstone 2. The curbstone 2 is a block structure, and a vertical groove 203 is provided on one side wall. The vertical groove 203 is used for the installation and positioning of the central shaft 302 extending from the end of the water-blocking mechanism 3.

[0024] In a preferred embodiment, the connecting mechanism 5 includes a base plate 10, at least two downward extending rods 11 are provided on the bottom surface of the base plate 10, a nut 12 is provided on the base plate 10, a vertical connecting bolt hole 202 is provided on one end of the curbstone 2, a vertical connecting bolt 15 is inserted into the connecting bolt hole 202, the lower end of the connecting bolt 15 extends downward to connect with the nut 12, and a nut is also provided on the part of the connecting bolt 15 located in the connecting bolt hole 202.

[0025] In a preferred embodiment, the lower extension rod 11 is a hollow rod with a closed lower end and an open upper end. The upper end of the lower extension rod 11 is aligned with the screw hole of the nut 12, and the inner wall of the lower extension rod 11 is provided with internal threads.

[0026] In a preferred embodiment, the substrate 10 is embedded between the upper and lower blocks 9 that make up the drainage well 1, and the lower extension rod 11 is inserted into the longitudinal joint 901 between two horizontally adjacent blocks 9.

[0027] Example 2: Based on the construction method of the municipal road anti-backflow drainage system described in Example 1, the method of first constructing both sides of the drainage well 1 and simultaneously constructing towards the middle is adopted, specifically including the following steps: 1) The top surface of drainage well 1 is masonry blocks 9 are arranged to form a longitudinal joint 901; 2) Use the longitudinal joint filler 13 to fill the longitudinal joint 901 between the blocks 9 and install the connecting mechanism 5 so that the lower extension rod 11 extends into the longitudinal joint 901 and the base plate 10 rests on the block 9. 3) The horizontal construction of block 9 on one side of drainage well 1 was completed; 4) Apply mortar 14 to the face of the lower layer block 9 and install the upper layer block 9 one block at a time. 5) Install connecting bolts 15 through the longitudinal joints 901 between the upper blocks 9, so that the lower end of the connecting bolts 15 extends into the lower extension rod 11; 6) Use longitudinal joint filler 13 to apply grout to the longitudinal joints 901 between the upper layers of blocks 9; 7) Install the side curb stones 2 on both sides of the drainage well 1, so that the connecting bolts 15 pass through the connecting bolt holes 202 on the side curb stones 2 and then use nuts to connect and fix the side curb stones 2 and the blocks 9. 8) Install the water-blocking mechanism 3, so that the central shaft 302 extending from both ends of the water-blocking mechanism 3 is placed in the vertical groove 203, and install the water-blocking mechanism 3 at the position below the wellhead of the drainage well 1; 9) Install multiple middle curb stones 2 between the two side curb stones 2, and fix the middle curb stones 2 in the same way.

[0028] In the preferred embodiment, during the grouting process of the transverse joint filling 14 in step 4), the grouting height is higher than the top surface of the substrate 10 and lower than the top surface of the nut 12, so that the substrate 10 is embedded in the cement mortar.

[0029] During the above process, the connecting mechanism 5 is embedded in the block 9. The curbstone 2 is fixed by connecting the connecting structure 5, which can ensure the stability of the connection between it and the side of the drainage well 1. In the later stage, the curbstone 2 can also be quickly disassembled to facilitate the maintenance and construction of the water-blocking mechanism 4 and the drainage well 1.

[0030] In addition, multiple connecting mechanisms 5 can be installed simultaneously to complete the construction of block 9 in one go, or block 9 can be installed from both sides towards the middle. When the middle block 9 is being installed, the side curbstones 2 can be installed simultaneously to speed up the construction progress.

[0031] During daily drainage, sewage from the road surface enters through the drainage hole 201 and falls onto the water-blocking mechanism 3. Due to the gravity of the sewage, the water-blocking mechanism 3 rotates and discharges the sewage downward into the drainage well 1, thus achieving continuous drainage.

[0032] When the sewage level rises and backflow occurs in drainage well 1, the sewage exerts an upward thrust on the water-blocking mechanism 3. At this time, it is blocked by the check plate 7, preventing the water-blocking mechanism 3 from rotating clockwise and thus avoiding the sewage backflow. During this process, due to the high sewage level, the water-blocking mechanism 3... Figure 1 During the counterclockwise movement, the left baffle plate 4 is blocked by the sewage below, which can also prevent the sewage from flowing back. Even if the baffle mechanism 3 rotates counterclockwise, the sewage cannot flow out completely at once. Some of the sewage that escapes will still be discharged into the drainage well 1 under the action of gravity.

Claims

1. A municipal road anti-inversion drainage system, characterized by: It includes a water-blocking mechanism (3) installed at the upper port of the drainage well (1), a curbstone (2) is provided above the water-blocking mechanism (3), and the curbstone (2) covers the upper water inlet of the drainage well (1); The water-blocking mechanism (3) includes end plates (301) at both ends and a central shaft (302) located between the two end plates (301) and connecting the two end plates (301). Multiple water-blocking plates (4) are arranged circumferentially on the central shaft (302). The water-blocking mechanism (3) is located near the upper port of the drainage well (1) and the height of the central shaft (302) is lower than the height of the top surface of the drainage well (1). The curbstone (2) has a groove (6) on its lower top surface. A check plate (7) is installed in the groove (6) by a fixing pin (8) with a torsion spring. The check plate (7) is in contact with the baffle plate (4). The curbstone (2) has a drainage hole (201) for water passage on one end face, and the other end is connected and fixed to the block (9) on one side of the drainage well (1) through a connecting mechanism (5); The connecting mechanism (5) includes a base plate (10), at least two downward extending rods (11) are provided on the bottom surface of the base plate (10), a first nut (12) is provided on the base plate (10), a vertical connecting bolt hole (202) is provided on one end of the curbstone (2), a vertical connecting bolt (15) is inserted in the connecting bolt hole (202), the lower end of the connecting bolt (15) extends downward to connect with the first nut (12), and a second nut is adapted on the part of the connecting bolt (15) located in the connecting bolt hole (202); The lower extension rod (11) is a hollow rod with a closed lower end and an open upper end. The upper end of the lower extension rod (11) is aligned with the screw hole of the first nut (12), and the inner wall of the lower extension rod (11) is provided with internal threads. The base plate (10) is embedded between the upper and lower blocks (9) that make up the drainage well (1), and the lower extension rod (11) is inserted in the longitudinal joint (901) between two adjacent blocks (9) in the lateral direction.

2. A municipal road anti-backflow drainage system according to claim 1, characterized in that: The curbstone (2) includes a central curbstone (2), which has an arched structure.

3. A municipal road backflow prevention drainage system according to claim 2, characterized in that: The curbstone (2) also includes a side curbstone (2), which is a block structure. A vertical groove (203) is provided on one side wall. The vertical groove (203) is used for the installation and positioning of the central shaft (302) extending from the end of the water-blocking mechanism (3).

4. The construction method of a municipal road backflow prevention drainage system according to claim 3, characterized in that... Includes the following steps: 1) Drainage well (1) Lower layer of masonry blocks (9) are arranged and form longitudinal joints (901); 2) Use longitudinal joint filler (13) to fill the longitudinal joint (901) between the lower blocks (9) and install the connecting mechanism (5) so that the lower extension rod (11) extends into the longitudinal joint (901) and the base plate (10) rests on the lower block (9); 3) The horizontal construction of the block (9) on one side of the drainage well (1) is completed; 4) Apply grout (14) to the face of the formed lower layer block (9) and install the upper layer block (9) one by one; 5) Install connecting bolts (15) through the longitudinal joints (901) between the upper blocks (9) so that the lower end of the connecting bolts (15) penetrates into the lower extension rod (11); 6) Use longitudinal joint filler (13) to apply grout in the longitudinal joints (901) between the upper blocks (9); 7) Install the side curb stones (2) on both sides of the drainage well (1), and then use the second nut to fix the side curb stone (2) to the block (9) after the connecting bolt (15) passes through the connecting bolt hole (202) on the side curb stone (2); 8) Install the water-blocking mechanism (3), so that the central shaft (302) extending from both ends of the water-blocking mechanism (3) is placed in the vertical groove (203), and install the water-blocking mechanism (3) at the position below the wellhead of the drainage well (1); 9) Install multiple middle curb stones (2) between the two side curb stones (2) and fix the middle curb stones (2) in the same way.

5. The construction method of a municipal road backflow prevention drainage system according to claim 4, characterized in that: In step 4), during the grouting process of the horizontal joint filling (14), the grouting height is higher than the top surface of the substrate (10) and lower than the top surface of the first nut (12), so that the substrate (10) is embedded in the cement mortar.

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