Exhaust valve device for bridge prestressed pipeline grouting

Abstract

The utility model relates to the technical field, and discloses an exhaust valve device for bridge prestressed pipeline grouting, which comprises a bridge body, a first steel pipe and a second steel pipe are mounted on two sides of the bridge body, one end of each of the first steel pipe and the second steel pipe is provided with an external thread structure, and one end of the first steel pipe is sleeved with a three-way joint. The side end of the three-way connector is communicated with the second steel pipe, the other end of the three-way connector is in threaded connection with a first internal and external thread nut, one end of the first internal and external thread nut is in threaded connection with a second internal and external thread nut, and one end of the second internal and external thread nut is in threaded connection with a quick-screwing thread small ball valve. According to the utility model, the built-in exhaust hose guides and exhausts the air retained at the grouting port and the grout outlet of the beam body prestressed pipeline, so that the grouting is full and full, the grouting quality of the prestressed pipeline is greatly improved, the damage of a prestressed bridge is effectively reduced, and the post-period bridge prestressed maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge pipeline grouting, in particular to an exhaust valve device for bridge prestressed pipeline grouting. Background Art

[0002] Prestressed beams, also known as prestressed concrete beams, are a commonly used form of beam construction in construction projects in recent years. Prestressed concrete structural components are generally formed by rebound extrusion through the tensioning of prestressed tendons, so that the cross-section of the concrete is subjected to a certain amount of evenly distributed internal pressure before it is put into use, which is used to partially or completely offset the stress formed by the use load. With the continuous development and improvement of prestressed technology, the post-tensioning prestressing technology of the channel is widely used in bridges, large-span building structures and rock and soil anchoring. In order to protect the prestressed tendons from corrosion and ensure the safety of the prestressed structure, grouting work is required.

[0003] Since the grouting port and the outlet port of the prestressed pipe of the bridge beam are generally at the highest peak of the pipe, when grouting the prestressed pipe of the bridge in the existing technical solution, the simple straight-through valve cannot exhaust the grouting end and the outlet end of the beam body, the slurry at the anchor head cannot be filled, and the prestressed steel strands cannot be effectively protected. In view of the above problems, an exhaust valve device for grouting prestressed pipes of bridges is provided herein. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides an exhaust valve device for grouting of prestressed pipes of bridges, aiming to improve the problem in the prior art that the gas cannot be discharged, resulting in the inability to fully fill the slurry at the anchor head.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an exhaust valve device for grouting of a prestressed pipe of a bridge, comprising a bridge beam, a first steel pipe and a second steel pipe are installed on both sides of the bridge beam, one end of the first steel pipe and the second steel pipe are both provided with an external thread structure, one end of the first steel pipe is sleeved with a three-way joint, and the side end of the three-way joint is connected to the second steel pipe;

[0006] The other end of the three-way joint is threadedly connected to a first internal and external threaded nut, one end of the first internal and external threaded nut is threadedly connected to a second internal and external threaded nut, one end of the second internal and external threaded nut is threadedly connected to a quick-tightening threaded small ball valve, one end of the quick-tightening threaded small ball valve is provided with a first pneumatic quick-connect joint, and one end of the first pneumatic quick-connect joint is sleeved with a first exhaust hose.

[0007] As a further description of the above technical solution:

[0008] A second pneumatic quick-connect connector is also installed inside the three-way connector.

[0009] As a further description of the above technical solution:

[0010] One end of the second pneumatic quick-connect connector is connected to a first internal and external threaded nut, and the other end of the second pneumatic quick-connect connector is connected to a second exhaust hose, and one end of the second exhaust hose passes through the first steel pipe.

[0011] As a further description of the above technical solution:

[0012] A grouting port is provided at one end of the second steel pipe, a ball valve is installed at one end of the second steel pipe, and a slurry outlet is provided at one end of the other steel pipe.

[0013] As a further description of the above technical solution:

[0014] One end of the first steel pipe is connected to the bridge beam.

[0015] As a further description of the above technical solution:

[0016] The first steel pipes are arranged in a staggered manner with the bridge beam as a reference, and a reserved pipeline is installed inside the bridge beam. The first steel pipes are connected to each other through the reserved pipeline, and the second exhaust pipe is connected to the inside of the reserved pipeline.

[0017] The utility model has the following beneficial effects:

[0018] In the utility model, the air trapped at the grouting port and the outlet port of the prestressed pipe of the beam body is guided and discharged through the built-in exhaust hose, so that the grouting is full and full, which greatly improves the grouting quality of the prestressed pipe, effectively reduces the diseases of the prestressed bridge, and reduces the later maintenance cost of the prestressed bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of an exhaust valve device for grouting prestressed pipes of bridges proposed by the utility model;

[0020] Figure 2 A schematic diagram of a second pneumatic quick-connect connector of a venting valve device for grouting prestressed pipes of a bridge proposed by the utility model;

[0021] Legend:

[0022] 1. First steel pipe; 2. Second steel pipe; 3. Three-way joint; 4. First internal and external threaded nut; 5. Second internal and external threaded nut; 6. Small quick-tightening threaded ball valve; 7. First pneumatic quick-connect joint; 8. First exhaust hose; 9. Second pneumatic quick-connect joint; 10. Grouting port; 11. Ball valve; 12. Second exhaust hose; 13. Bridge beam; 14. Reserved pipeline; 15. Slurry outlet. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-2 The utility model provides an embodiment: an exhaust valve device for grouting of a prestressed pipe of a bridge, comprising a bridge beam 13, a first steel pipe 1 and a second steel pipe 2 are installed on both sides of the bridge beam 13, one end of the first steel pipe 1 and the second steel pipe 2 are provided with an external thread structure, one end of the first steel pipe 1 is sleeved with a tee joint 3, and the side end of the tee joint 3 is connected to the second steel pipe 2;

[0025] The other end of the three-way joint 3 is threadedly connected with a first internal and external threaded nut 4, one end of the first internal and external threaded nut 4 is threadedly connected with a second internal and external threaded nut 5, one end of the second internal and external threaded nut 5 is threadedly connected with a quick-tightening threaded small ball valve 6, one end of the quick-tightening threaded small ball valve 6 is provided with a first pneumatic quick-connect joint 7, and one end of the first pneumatic quick-connect joint 7 is sleeved with a first exhaust hose 8.

[0026] A second pneumatic quick-connect connector 9 is also installed inside the three-way connector 3 .

[0027] One end of the second pneumatic quick-connect connector 9 is connected to the first internal and external threaded nut 4 , and the other end of the second pneumatic quick-connect connector 9 is connected to the second exhaust hose 12 , and one end of the second exhaust hose 12 passes through the first steel pipe 1 .

[0028] A grouting port 10 is provided at one end of the second steel pipe 2 , a ball valve 11 is installed at one end of the second steel pipe 2 , and a slurry outlet 15 is provided at one end of the other steel pipe 2 .

[0029] One end of the first steel pipe 1 is connected to the bridge beam.

[0030] The first steel pipes 1 are arranged in pairs at different heights based on the bridge beam 13 , and a reserved pipe 14 is installed inside the bridge beam 13 . The first steel pipes 1 are connected to each other through the reserved pipe 14 , and the second exhaust pipe 12 is connected to the inside of the reserved pipe 14 .

[0031] Working principle: During installation, firstly, the three interfaces of the first steel pipe 1, the second steel pipe 2, and the first internal and external threaded nut 4 are fixedly connected with the three interfaces of the three-way joint 3 by threads, and then the second internal and external threaded nut 4 is screwed with the second internal and external threaded nut 5, and the first exhaust hose 8 is fixedly connected with the quick-tightening threaded small ball valve 6 through the first pneumatic quick-plug connector 7, and the quick-tightening threaded small ball valve 6 is threadedly fastened with the second internal and external threaded nut 5. At the same time, the second pneumatic quick-plug connector 9 is installed inside the three-way joint 3, and the second exhaust hose 12 is connected with the second pneumatic quick-plug connector 9. One end of the second exhaust hose 12 passes through one end of the first steel pipe 1. At the same time, one end of the two first steel pipes 1 is inserted into the bridge beam 13, and the ball valve 11 is installed on one end of the second steel pipe 2 by threaded fastening. The two first steel pipes 1 are connected The built-in reserved pipe 13 of the beam body is connected. After all the components are installed, the device is tightened and connected to the grouting place of the beam body, and the second exhaust hose 12 is inserted into the beam body. The two ball valves 11 at the grouting port 10 and the slurry outlet 15 are opened, the grouting machine is connected to the grouting ball valve 11, and grouting is started. After the first exhaust hose 8 exhausts the air at the grouting port of the prestressed pipe 14 of the beam body and the grouting liquid emerges, the quick-twist threaded small ball valve 6 is closed; grouting is continued until the pipe slurry is full and slurry emerges from the pipe slurry outlet 15, and the ball valve 11 at the slurry outlet is closed. At this time, grouting is continued until the air in the first exhaust hose 8 at the slurry outlet 15 is exhausted and the grouting liquid emerges, the quick-twist threaded small ball valve 6 at the slurry outlet 15 is closed, thereby realizing the built-in exhaust hose. The air trapped at the grouting port and the slurry outlet of the prestressed pipe 14 of the beam body is guided to be discharged.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A venting valve device for grouting prestressed pipes of bridges, comprising a bridge beam (13), characterized in that: A first steel pipe (1) and a second steel pipe (2) are installed on both sides of the bridge beam (13); one end of the first steel pipe (1) and the second steel pipe (2) are both provided with an external thread structure; one end of the first steel pipe (1) is sleeved with a three-way joint (3); and the side end of the three-way joint (3) is connected to the second steel pipe (2); The other end of the three-way joint (3) is threadedly connected to a first internal and external threaded nut (4), one end of the first internal and external threaded nut (4) is threadedly connected to a second internal and external threaded nut (5), one end of the second internal and external threaded nut (5) is threadedly connected to a quick-tightening threaded small ball valve (6), one end of the quick-tightening threaded small ball valve (6) is provided with a first pneumatic quick-connect joint (7), and one end of the first pneumatic quick-connect joint (7) is sleeved with a first exhaust hose (8).

2. The exhaust valve device for grouting prestressed pipes of bridges according to claim 1 is characterized in that: A second pneumatic quick-connect connector (9) is also installed inside the three-way connector (3).

3. The exhaust valve device for grouting prestressed pipes of bridges according to claim 2 is characterized in that: One end of the second pneumatic quick-connect connector (9) is connected to a first internal and external threaded nut (4), and the other end of the second pneumatic quick-connect connector (9) is connected to a second exhaust hose (12), and one end of the second exhaust hose (12) passes through the first steel pipe (1).

4. The exhaust valve device for grouting of prestressed pipes in bridges according to claim 1 is characterized in that: A grouting port (10) is provided at one end of the second steel pipe (2), a ball valve (11) is installed at one end of the second steel pipe (2), and a slurry outlet (15) is provided at one end of the other steel pipe (2).

5. The exhaust valve device for grouting of prestressed pipes in bridges according to claim 1 is characterized in that: One end of the first steel pipe (1) is connected to the bridge beam (13).

6. The exhaust valve device for grouting of prestressed pipes in bridges according to claim 3 is characterized by: The first steel pipes (1) are arranged in a staggered manner with the bridge beam (13) as a reference, and a reserved pipe (14) is installed inside the bridge beam (13). The first steel pipes (1) are connected to each other through the reserved pipe (14), and the second exhaust hose (12) is connected to the inside of the reserved pipe (14).

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