Internal pouring concrete backflow pipe joint

Abstract

The utility model relates to the technical field of concrete backflow pipes, and provides an internally-poured concrete backflow pipe connector which comprises a four-way connector, the four-way connector is divided into a feeding section, a discharging section, an adjusting section and a dredging section, the feeding section is used for being connected with a backflow pipe, the feeding section and the adjusting section are oppositely arranged up and down, and the discharging section and the dredging section are oppositely arranged left and right. A buffering wedge block used for relieving material impact and guiding materials to flow to the discharging section is detachably connected in the adjusting section, the dredging section is in linear sliding connection with a pushing rod used for unblocking, through the arrangement of the buffering wedge block in the adjusting section, the impact force generated when the materials fall is effectively relieved, the materials are smoothly guided to the discharging section, and when blocking occurs, the materials can be unblocked. Through the arrangement of the pushing rod in the dredging section, directional dredging and blockage cleaning are implemented, the risk of equipment damage is reduced, the service life of equipment is prolonged, and smooth conveying of materials is ensured.

Description

Technical Field

[0001] This utility model relates to the field of concrete return pipe technology, and more specifically, to a concrete return pipe connector. Background Technology

[0002] During the construction of a bridge project, the bridge area is located in a fish resource protection zone. To prevent cement slurry, sewage, and loose concrete from overflowing into the river, a return pipe needs to be installed at the slurry outlet to guide leaked material from above to the arch foot, where it will be collected by tanker trucks and transported back to the mixing plant for waste disposal. Currently, the return pipe is laid out in a straight line along the pedestrian maintenance walkway. However, due to the significant elevation difference in the return pipe, the material has considerable downward potential energy when it reaches the tanker truck end, which could potentially damage the equipment. Furthermore, under high flow conditions, there is also a risk of material accumulation and blockage. Utility Model Content

[0003] The purpose of this utility model is to provide an internal concrete return pipe joint, which solves the problems of large height difference in the return pipe leading to large falling potential energy of materials, which can easily damage the equipment, and the easy blockage when the material flow is large. It reduces the risk of equipment damage, extends the service life of the equipment, and ensures smooth material transportation.

[0004] This utility model is achieved through the following technical solution: an internal concrete return pipe joint, including a four-way joint, which is divided into a feeding section, a discharging section, an adjusting section and a clearing section. The feeding section is used to connect the return pipe. The feeding section and the adjusting section are arranged vertically opposite each other, and the discharging section and the clearing section are arranged horizontally opposite each other. The adjusting section is detachably connected to a buffer wedge for reducing material impact and guiding material flow to the discharging section. The clearing section is linearly slidably connected to a push rod for unblocking.

[0005] Furthermore, the regulating section port is threadedly connected to a first cover, and a spring damper is provided between the first cover and the buffer wedge.

[0006] Preferably, the bottom end of the buffer wedge is provided with an adjusting bolt extending beyond the adjusting section. The adjusting bolt is slidably connected to the first cover, and an adjusting nut that abuts against the first cover is threaded onto the adjusting bolt.

[0007] Furthermore, a retaining ring is provided at the lower end of the buffer wedge, and a retaining groove is provided on the retaining ring. The adjustment section is provided with a stepped hole, consisting of a small diameter section and a large diameter section. The small diameter section is sealed and slidably connected to the side wall of the buffer wedge, and the inner wall of the large diameter section is provided with a limiting guide key that slides with the retaining groove.

[0008] Preferably, a sealing ring is nested on the inner wall of the small-diameter section.

[0009] Furthermore, the end of the unblocking section is threaded with a second cover, and the push rod includes a slide rod that is slidably connected to the second cover. One end of the slide rod is provided with a handle, and the other end of the slide rod is provided with a piston that contacts the inner wall of the unblocking section and the inner wall of the discharge section.

[0010] Furthermore, both the discharge section and the dredging section are arranged at an angle downwards.

[0011] This utility model has at least the following advantages and beneficial effects: by adjusting the setting of the buffer wedge block in the adjustment section, the impact force of the falling material is effectively reduced, and the material is smoothly guided to the discharge section. When there is a blockage, the push rod in the unblocking section is used to implement directional unblocking, clear the blockage, reduce the risk of equipment damage, extend the service life of the equipment, and ensure the smooth conveying of materials. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an internally filled concrete return pipe joint provided by this utility model.

[0013] Figure 2 This utility model Figure 1 Sectional view along the AA direction.

[0014] Figure 3 This utility model provides a structural schematic diagram of a buffer wedge block in an internally filled concrete return pipe joint.

[0015] Attached reference numerals: 1-Four-way connector, 11-Feeding section, 12-Discharge section, 13-Adjusting section, 131-First cover, 132-Adjusting bolt, 133-Adjusting nut, 134-Limit guide key, 135-Sealing ring, 14-Unblocking section, 141-Second cover, 2-Buffer wedge, 21-Snap ring, 210-Snap groove, 3-Push rod, 31-Slide rod, 32-Handle, 33-Piston, 4-Spring damper. Detailed Implementation

[0016] The specific implementation method is described below with reference to the accompanying drawings.

[0017] Example

[0018] like Figure 1-3As shown in this embodiment, a concrete return pipe connector is disclosed, including a four-way connector 1. The four-way connector 1 is divided into an inlet section 11, an outlet section 12, an adjusting section 13, and a clearing section 14. The inlet section 11 is used to connect to the return pipe. The inlet section 11 and the adjusting section 13 are arranged vertically opposite each other. The outlet section 12 and the clearing section 14 are arranged horizontally opposite each other. A buffer wedge 2 for mitigating material impact and guiding material flow to the outlet section 12 is detachably connected inside the adjusting section 13. A push rod 3 for unblocking is linearly slidably connected to the clearing section 14. Specifically, the end of the inlet section 11 is connected to the return pipe through a flange, and the end of the outlet section 12 is connected to the tank truck. The inlet flange is connected. When the material leaking during bridge construction falls into the joint from above through the feed section 11 via the return pipe, it impacts the wedge-shaped surface of the buffer wedge 2, causing the buffer wedge 2 to move elastically, reducing the impact force of the falling material, and guiding the material to the discharge section 12. At this time, only the feed section 11 and the discharge section 12 are connected in the four-way joint 1. When the conveying is blocked, the buffer wedge 2 is removed first. On the one hand, the regulating section 13 is connected to the outside to form a new discharge port. On the other hand, the structural interference between the buffer wedge 2 and the push rod 3 is eliminated, allowing the push rod 3 to slide to the middle of the four-way joint 1 to carry out directional unblocking and clear the blockage.

[0019] Furthermore, in a specific implementation, a first cover 131 is threadedly connected to the port of the adjustment section 13 provided in this embodiment of the present invention, and a spring damper 4 is provided between the first cover 131 and the buffer wedge 2; through the threaded connection between the first cover 131 and the port of the adjustment section 13, the internal buffer wedge 2 and the spring damper 4 are detachably connected; the spring damper 4 can adopt existing technology, and its specific structure is known to those skilled in the art and will not be described in detail; on the one hand, the spring damper 4 is limited between the first cover 131 and the buffer wedge 2, which reduces the impact force generated by the material during the falling process, plays a buffering role, reduces the risk of equipment damage, and extends the service life of the equipment; on the other hand, through the movement of the buffer wedge 2, it helps to prevent the accumulation and blockage of material during the falling process, and ensures the smooth conveying of material.

[0020] Preferably, the bottom end of the buffer wedge 2 is provided with an adjusting bolt 132 extending out of the adjusting section 13. The adjusting bolt 132 is slidably connected to the first cover 131, and the adjusting bolt 132 is threaded with an adjusting nut 133 that abuts against the first cover 131. Specifically, the adjusting bolt 132 is fixed relative to the buffer wedge 2. By turning the adjusting nut 133, the relative position of the adjusting nut 133 and the adjusting bolt 132 is adjusted, thereby changing the initial position of the buffer wedge 2 in the four-way connector 1, and thus changing the channel size between the material feed section 11 and the discharge section 12, ensuring the efficiency and stability of material flow. At the same time, the distance between the buffer wedge 2 and the first cover 131 can be adjusted to adjust the initial compression degree of the spring damper 4, change the softness and hardness of the buffer wedge 2 under pressure and rebound, and improve the flexibility of the structure.

[0021] Furthermore, in specific implementation, such as Figure 2 , 3 As shown, the buffer wedge 2 provided in this embodiment of the present invention has a retaining ring 21 at its lower end. The retaining ring 21 has a retaining groove 210. The adjusting section 13 has a stepped hole and is composed of a small diameter section and a large diameter section. The small diameter section is slidably connected to the side wall of the buffer wedge 2. The inner wall of the large diameter section is provided with a limiting guide key 134 that slides with the retaining groove 210. It should be noted that the cooperation between the stepped hole and the retaining ring 21 can further limit the upward movement of the buffer wedge 2 and also provide the upper limit boundary for the adjustment of the adjusting bolt 132. The cooperation between the retaining groove 210 and the limiting guide key 134 effectively limits the horizontal rotation of the buffer wedge 2, ensuring that the wedge-shaped surface of the buffer wedge 2 always faces the discharge section 12, thus ensuring the effectiveness of the guiding function of the buffer wedge 2.

[0022] Preferably, a sealing ring 135 is nested on the inner wall of the small-diameter section; this prevents material leakage, ensures the safe flow of materials in the pipeline, and reduces the intrusion of external impurities, thereby improving the overall sealing performance and reliability of the system.

[0023] Furthermore, in a specific implementation, the end of the unblocking section 14 provided in this utility model embodiment is threadedly connected to a second cover 141, and the push rod 3 includes a slide rod 31 that is slidably connected to the second cover 141. One end of the slide rod 31 is provided with a handle 32, and the other end of the slide rod 31 is provided with a piston 33 that contacts the inner wall of the unblocking section 14 and the inner wall of the discharge section 12. When the four-way connector 1 is running normally, the piston 33 is housed in the unblocking section 14. When unblocking is required, the push rod 3 is pushed and pulled back and forth by the handle 32, and the material is pushed into the discharge section 12 under the action of the piston 33 to clear the blockage.

[0024] Furthermore, in specific implementation, the discharge section 12 and the unblocking section 14 provided in this utility model embodiment are both arranged at an angle downwards; gravity helps the material flow out smoothly, reducing the retention of material in the pipe and greatly reducing the risk of blockage; in addition, a reasonable tilt angle can also promote the smooth flow of material and improve construction efficiency.

Claims

1. A concrete return pipe joint with internal filling, characterized in that, Includes a four-way connector (1), which is divided into a feeding section (11), a discharging section (12), an adjusting section (13), and a clearing section (14). The feeding section (11) is used to connect to the return pipe. The feeding section (11) and the adjusting section (13) are arranged vertically opposite each other. The discharging section (12) and the clearing section (14) are arranged horizontally opposite each other. The adjusting section (13) is detachably connected to a buffer wedge (2) for reducing material impact and guiding the material flow to the discharging section (12). The clearing section (14) is linearly slidably connected to a push rod (3) for unblocking.

2. The internally grouted concrete return pipe joint according to claim 1, characterized in that, The adjustment section (13) is threadedly connected to a first cover (131), and a spring damper (4) is provided between the first cover (131) and the buffer wedge (2).

3. The internally filled concrete return pipe joint according to claim 2, characterized in that, The bottom end of the buffer wedge (2) is provided with an adjusting bolt (132) extending out of the adjusting section (13). The adjusting bolt (132) is slidably connected to the first cover (131). An adjusting nut (133) that abuts against the first cover (131) is threaded onto the adjusting bolt (132).

4. The internally grouted concrete return pipe joint according to claim 1, characterized in that, The buffer wedge (2) is provided with a retaining ring (21) at its lower end. The retaining ring (21) is provided with a retaining groove (210). The adjustment section (13) is provided with a stepped hole and is composed of a small diameter section and a large diameter section. The small diameter section is sealed and slidably connected to the side wall of the buffer wedge (2). The inner wall of the large diameter section is provided with a limiting guide key (134) that slides with the retaining groove (210).

5. A concrete return pipe joint according to claim 4, characterized in that, The inner wall of the small diameter section is nested with a sealing ring (135).

6. A concrete return pipe joint according to claim 1, characterized in that, The end of the unblocking section (14) is threadedly connected to a second cover (141). The push rod (3) includes a slide rod (31) that is slidably connected to the second cover (141). One end of the slide rod (31) is provided with a handle (32), and the other end of the slide rod (31) is provided with a piston (33) that contacts the inner wall of the unblocking section (14) and the inner wall of the discharge section (12).

7. The internally grouted concrete return pipe joint according to claim 1, characterized in that, Both the discharge section (12) and the unblocking section (14) are arranged at an angle downwards.

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