A cofferdam communication pipe interface

Abstract

This invention discloses a universal cofferdam connecting pipe interface, relating to the technical field of connecting pipe interfaces. It includes a cofferdam wall, a connecting steel pipe, a cover plate, and a drainage pipe. The connecting steel pipe is installed inside the cofferdam wall, and a flange is installed on one side of the connecting steel pipe. A reinforcing plate connected to the cofferdam wall is installed on one side of the flange. A cover plate is installed on one side of the flange, and a second sealing ring is provided on the inner wall of the cover plate through polyurethane waterproof adhesive to fit the flange. A drainage pipe is installed inside the cover plate through an installation mechanism, and a movable groove is opened inside the drainage pipe. A connecting shaft is installed inside the movable groove through a sealed bearing. This device allows the connecting shaft to open the through hole of a spherical blocking block, allowing water to gradually drain through. Bolts are fixed at the point where the cover plate is fully opened, thus ensuring the safety of divers.

Description

Technical Field

[0001] This invention relates to the field of cofferdam connecting pipe technology, specifically a universal cofferdam connecting pipe interface. Background Technology

[0002] A cofferdam is a temporary retaining structure built in water conservancy projects to construct permanent water conservancy facilities. The cofferdam connecting pipe usually needs to be fixed with flange interfaces and has the advantages of high strength, removability and standard version.

[0003] However, the existing universal cofferdam connecting pipe interfaces have the following problems in use: traditional flange connections are suitable for high pressure and large diameter, but they are costly and bulky, and the operation of divers is dangerous during drainage. In addition, the flange pressure relief port cannot be adapted to connecting pipes of different diameters, and cannot meet the diversified market demand. Summary of the Invention

[0004] The purpose of this invention is to provide a universal cofferdam connecting pipe interface to solve the related problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a universal cofferdam connecting pipe interface, including a cofferdam wall, a connecting steel pipe, a cover plate, and a drainage pipe. The connecting steel pipe is provided inside the cofferdam wall, and a flange is installed on one side of the connecting steel pipe. A reinforcing plate connected to the cofferdam wall is installed on one side of the flange. A cover plate is provided on one side of the flange, and a second sealing ring that fits the flange is provided on the inner wall of the cover plate through polyurethane waterproof adhesive. A drainage pipe is provided inside the cover plate through an installation mechanism, and a movable groove is opened inside the drainage pipe. A connecting shaft is installed inside the movable groove through a sealed bearing, and a spherical blocking block for blocking water flow is installed between the inner walls of the connecting shaft. A first sealing ring that matches the spherical blocking block is provided on the inner wall of the movable groove. A limiting mechanism for adjusting the rotation angle of the spherical blocking block is provided above the drainage pipe.

[0006] As a preferred embodiment of the connecting pipe interface of a universal cofferdam according to the present invention, the flange and the cover plate are fixedly connected by fixing bolts.

[0007] As a preferred embodiment of the universal cofferdam connecting pipe interface of the present invention, the installation mechanism includes an installation groove and a rotating shaft. The top and bottom ends of the drainage pipe are provided with installation grooves, and the rotating shaft is installed inside the installation groove through a sealed bearing. A limiting plate penetrating the cover plate is installed on the outer wall of the rotating shaft, and a tightly fitting rubber block is provided on the inner wall of the limiting plate.

[0008] As a preferred embodiment of the connecting pipe interface of a universal cofferdam of the present invention, a knob is installed on the side of the rotating shaft away from the limiting plate, and a threaded groove is opened inside the knob, and an installation bolt for inserting into the drainage pipe is provided on the inner wall of the threaded groove.

[0009] As a preferred embodiment of the connecting pipe interface of a universal cofferdam according to the present invention, the outer wall of the rotating shaft is fitted with a torsion spring that connects to the inner wall of the mounting groove.

[0010] As a preferred embodiment of the connecting pipe interface of a universal cofferdam according to the present invention, the limiting mechanism includes a positioning block and a moving groove. The top end of the drainage pipe is equipped with a positioning block, and the top end of the positioning block is provided with a ratchet limiting groove. The positioning block is provided with a knob, and the knob is provided with a moving groove. The moving groove is provided with a sliding groove adapted to the connecting shaft. The outer wall of the knob is equipped with a ratchet block adapted to the ratchet limiting groove.

[0011] As a preferred embodiment of the connecting pipe interface of a universal cofferdam according to the present invention, the outer wall of the knob is provided with anti-slip texture.

[0012] As a preferred embodiment of the connecting pipe interface of a universal cofferdam according to the present invention, the movable groove is provided with a spring connected to the top end of the connecting shaft.

[0013] As a preferred embodiment of the connecting pipe interface of a universal cofferdam according to the present invention, the outer wall of the drainage pipe is provided with a sealing strip that passes through the hole at the cover plate.

[0014] The beneficial effects of the universal cofferdam connecting pipe interface of the present invention are as follows: 1. This invention involves pulling up and rotating the knob, which in turn rotates the connecting shaft, causing the spherical blocking block to open. As water gradually flows through, the bolts are fixed at the opening of the cover plate. This ensures the safety of divers and is suitable for flow control and shut-off. It is flexible in operation and comes in various types.

[0015] 2. This invention flips two sets of limiting plates at the drain pipe to the inner wall of the drain pipe, causing the limiting plates to drive the rotating shaft to rotate. This causes the torsion spring at the rotating shaft to tighten. Then, the drain pipe and the sealing strip are inserted into the inner wall of the cover plate. At this time, the rotating shaft, under the elastic action of the torsion spring, drives the limiting plates to flip and fit against the outer wall of the cover plate, forming a flip-locking action and completing the fixation. This structure is convenient for use at the cover plate position of connecting steel pipes of different diameters, satisfying the advantages of universality and improving practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 2For the present invention Figure 1 A magnified structural diagram at point A; Figure 3 For the present invention Figure 1 A magnified structural diagram at point B; Figure 4 This is a top view of the structure of the present invention; Figure 5 This is a schematic diagram of the cover plate and drain pipe of the present invention from the left view.

[0017] In the diagram: 1. Cofferdam wall; 2. Connecting steel pipe; 3. Cover plate; 4. Reinforcing plate; 5. Drainage pipe; 6. Flange; 7. Movable groove; 8. First sealing ring; 9. Second sealing ring; 10. Fixing bolt; 11. Positioning block; 12. Ratchet limit groove; 13. Knob; 14. Spring; 15. Ratchet block; 16. Moving groove; 17. Connecting shaft; 18. Spherical blocking block; 19. Mounting groove; 20. Rotating shaft; 21. Limiting plate; 22. Knob; 23. Threaded groove; 24. Torsion spring; 25. Sealing strip. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1, as Figure 1-2As shown, the present invention provides a technical solution: a universal cofferdam connecting pipe interface, including a cofferdam wall 1, a connecting steel pipe 2, a cover plate 3, and a drainage pipe 5. The connecting steel pipe 2 is provided inside the cofferdam wall 1, and a flange 6 is installed on one side of the connecting steel pipe 2. A reinforcing plate 4 connected to the cofferdam wall 1 is installed on one side of the flange 6. A cover plate 3 is provided on one side of the flange 6, and a second sealing ring 9 that fits the flange 6 is provided on the inner wall of the cover plate 3 through polyurethane waterproof adhesive. The drainage pipe 5 is provided inside the cover plate 3 through an installation mechanism, and a movable groove 7 is opened inside the drainage pipe 5. The flange 6 and the cover plate 3 are fixedly connected by fixing bolts 10. The installation mechanism includes an installation groove 19 and a rotating shaft 20. The top and bottom ends of the drainage pipe 5 are both provided with installation grooves 19, and the rotating shaft 20 is installed inside the installation groove 19 through a sealed bearing. A limiting plate 21 penetrating the cover plate 3 is installed on the outer wall of the rotating shaft 20, and a tightly fitting rubber is provided on the inner wall of the limiting plate 21. A knob 22 is installed on the side of the rotating shaft 20 away from the limiting plate 21, and the knob 22 has a threaded groove 23 inside. The inner wall of the threaded groove 23 is provided with a mounting bolt that is inserted into the drain pipe 5. A torsion spring 24 connected to the inner wall of the mounting groove 19 is sleeved on the outer wall of the rotating shaft 20. A sealing strip 25 is provided on the outer wall of the drain pipe 5 and has a through hole at the cover plate 3. The operator drills a hole at the cover plate 3 with the diameter of the hole matching the outer wall of the drain pipe 5, and then flips the two sets of limiting plates 21 at the drain pipe 5. The drain pipe 5 is rotated to the inner wall position, causing the limiting plate 21 to drive the rotating shaft 20 to rotate. This causes the torsion spring 24 at the rotating shaft 20 to tighten. Then, the drain pipe 5 drives the sealing strip 25 to be inserted into the inner wall position of the cover plate 3. At this time, under the elastic action of the torsion spring 24, the rotating shaft 20 drives the limiting plate 21 to flip and fit against the outer wall of the cover plate 3, forming a flip-lock and completing the fixation. This structure is convenient for use at the cover plate 3 position of connecting steel pipes 2 with different diameters, meeting the advantages of universality and improving practicality.

[0020] Example 2, as Figure 1-5As shown, the present invention provides a technical solution: a universal cofferdam connecting pipe interface, including a connecting shaft 17 installed inside the movable groove 7 via a sealed bearing, and a spherical blocking block 18 for blocking water flow installed between the inner walls of the connecting shaft 17. A first sealing ring 8 adapted to the spherical blocking block 18 is provided on the inner wall of the movable groove 7. A limiting mechanism for adjusting the rotation angle of the spherical blocking block 18 is provided above the drain pipe 5. The limiting mechanism includes a positioning block 11 and a moving groove 16. The positioning block 11 is installed at the top of the drain pipe 5, and a ratchet limiting groove 12 is opened at the top of the positioning block 11. A knob 13 is provided inside the positioning block 11, and a moving groove 16 is opened inside the knob 13. The 6 has an internal sliding groove adapted to the connecting shaft 17. The outer wall of the knob 13 is equipped with a ratchet block 15 adapted to the ratchet limiting groove 12. The outer wall of the knob 13 is provided with anti-slip texture. The moving groove 16 is provided with a spring 14 connected to the top of the connecting shaft 17. By setting a drain pipe 5 at the cover plate 3, if the head difference of the cofferdam connecting pipe is too large and a diver needs to dive to open it, the knob 13 can be pulled up and rotated first. The knob 13 will drive the connecting shaft 17 to rotate, and then the connecting shaft 17 will drive the spherical blocking block 18 to open the through hole. Then, when the water begins to gradually drain, the bolt 10 is fixed at the point where the cover plate 3 is opened. This can fully ensure the safety of the diver's operation.

[0021] Working principle: First, the operator will use the drain pipe 5 installed at the cover plate 3. If the head difference of the cofferdam connecting pipe is too large, a diver needs to dive to open it. The operator can first pull up and rotate the knob 13, which will drive the connecting shaft 17 to rotate. Then the connecting shaft 17 will drive the spherical blocking block 18 to open the through hole. Then the water will gradually flow through. The bolt 10 is fixed at the point where the cover plate 3 is opened. This can fully ensure the safety of the diver's operation. It is suitable for flow control and cutting off. The advantages are flexible operation and variety of types. When it is necessary to stabilize the rotation angle of the spherical blocking block 18, the knob 13 can be loosened. Under the action of the spring 14, the ratchet block 15 will engage and fix with the ratchet limit groove 12, thus fixing the angle of the spherical blocking block 18.

[0022] When it is necessary to add a drain pipe 5 to the cover plate 3, a hole can be drilled in the cover plate 3, the diameter of which is adapted to the outer wall of the drain pipe 5. Then, the two sets of limiting plates 21 at the drain pipe 5 are flipped to the inner wall position of the drain pipe 5, so that the limiting plates 21 drive the rotating shaft 20 to rotate, and then the torsion spring 24 at the rotating shaft 20 is tightened. Then, the drain pipe 5 drives the sealing strip 25 to be inserted into the inner wall position of the cover plate 3. At this time, under the elastic action of the torsion spring 24, the rotating shaft 20 drives the limiting plate 21 to flip and fit against the outer wall of the cover plate 3, forming a flip-locking and fixing. This structure is convenient for use at the cover plate 3 position of connecting steel pipes 2 with different diameters, meets the advantages of universality, and improves practicality.

[0023] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A universal cofferdam connecting pipe interface, comprising a cofferdam wall (1), a connecting steel pipe (2), a cover plate (3), and a drainage pipe (5), characterized in that: The cofferdam wall (1) is provided with a connecting steel pipe (2) inside, and a flange (6) is installed on one side of the connecting steel pipe (2). A reinforcing plate (4) connected to the cofferdam wall (1) is installed on one side of the flange (6). A cover plate (3) is provided on one side of the flange (6). A second sealing ring (9) that fits the flange (6) is provided on the inner wall of the cover plate (3) through polyurethane waterproof adhesive. A drain pipe (5) is provided inside the cover plate (3) through an installation mechanism. A movable groove (7) is provided inside the drain pipe (5). A connecting shaft (17) is installed inside the movable groove (7) through a sealed bearing. A spherical blocking block (18) for blocking water flow is installed between the inner walls of the connecting shaft (17). A first sealing ring (8) that matches the spherical blocking block (18) is provided on the inner wall of the movable groove (7). A limiting mechanism for adjusting the rotation angle of the spherical blocking block (18) is provided above the drain pipe (5).

2. The universal cofferdam connecting pipe interface according to claim 1, characterized in that: The flange (6) and the cover plate (3) are fixedly connected by fixing bolts (10).

3. The universal cofferdam connecting pipe interface according to claim 1, characterized in that: The installation mechanism includes an installation groove (19) and a rotating shaft (20). The top and bottom ends of the drain pipe (5) are provided with installation grooves (19), and the rotating shaft (20) is installed inside the installation groove (19) through a sealed bearing. A limiting plate (21) penetrating the cover plate (3) is installed on the outer wall of the rotating shaft (20), and a tightly fitting rubber block is provided on the inner wall of the limiting plate (21).

4. The universal cofferdam connecting pipe interface according to claim 3, characterized in that: A knob (22) is installed on the side of the rotating shaft (20) away from the limiting plate (21), and a threaded groove (23) is provided inside the knob (22). An installation bolt for inserting into the drain pipe (5) is provided on the inner wall of the threaded groove (23).

5. The universal cofferdam connecting pipe interface according to claim 3, characterized in that: The outer wall of the rotating shaft (20) is fitted with a torsion spring (24) that is connected to the inner wall of the mounting groove (19).

6. The universal cofferdam connecting pipe interface according to claim 1, characterized in that: The limiting mechanism includes a positioning block (11) and a moving groove (16). The top of the drain pipe (5) is equipped with a positioning block (11), and the top of the positioning block (11) is provided with a ratchet limiting groove (12). The positioning block (11) is provided with a knob (13), and the knob (13) is provided with a moving groove (16). The moving groove (16) is provided with a sliding groove that is compatible with the connecting shaft (17). The outer wall of the knob (13) is equipped with a ratchet block (15) that is compatible with the ratchet limiting groove (12). The outer wall of the knob (13) is equipped with a ratchet block (15) that is compatible with the ratchet limiting groove (12).

7. The universal cofferdam connecting pipe interface according to claim 6, characterized in that: The outer wall of the knob (13) is provided with anti-slip texture.

8. The universal cofferdam connecting pipe interface according to claim 6, characterized in that: The movable groove (16) is provided with a spring (14) that is connected to the top end of the connecting shaft (17).

9. The universal cofferdam connecting pipe interface according to claim 6, characterized in that: The outer wall of the drain pipe (5) is provided with a sealing strip (25) that has a through hole at the cover plate (3).

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