Mud jacking conveying pipeline of prestress mud jacking trolley

Abstract

The utility model relates to the technical field of prestress grouting equipment, in particular to a grouting conveying pipeline of a prestress grouting trolley, which comprises a first grouting pipe, the discharging end of the first grouting pipe is communicated with the feeding end of a second grouting pipe, and the discharging end of the second grouting pipe is communicated with the first end of a first three-way connector. The second end of the first three-way connector is communicated with the feeding end of a third grouting pipe, the third end of the first three-way connector is communicated with the feeding end of a fourth grouting pipe, the discharging end of the fourth grouting pipe is communicated with the first end of a second three-way connector, the second end of the second three-way connector is communicated with the feeding end of a grout return pipe, and the third end of the second three-way connector is communicated with the feeding end of a fifth grouting pipe. The discharging end of the fifth grouting pipe communicates with the feeding end of a filtering connector, and the discharging end of the filtering connector communicates with a grout outlet pipe. The mud jacking conveying pipeline of the prestressed mud jacking trolley reduces the number of times of repeated starting and stopping of a mud conveying pump, facilitates mud conveying under various working conditions, and can filter conveyed mud.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed grouting equipment, and particularly relates to a grouting conveying pipeline of a prestressed grouting trolley. Background Art

[0002] In the process of bridge, highway and railway construction, the prestressed project plays a crucial role. The prestressed project refers to applying prestress to the steel bars in the tension members before the engineering structural members bear external loads, so as to improve the stiffness of the members, delay the time of crack appearance, and enhance the durability of the members. In order to keep the steel bars in a prestressed state all the time, grouting construction needs to be carried out in the pipelines where the steel bars are located. Therefore, the grouting construction link is an important construction link in the prestressed project construction. The grouting trolley is a commonly used device in the grouting construction process. The grouting trolley includes wheels, a frame, a mixing barrel, a weighing sensor, a material conveyor, a water pump and a slurry delivery pump. The weighing sensor is responsible for weighing and measuring the weight change of the mixing barrel, that is, the weight of the slurry and the water solution. The material conveyor is responsible for conveying the slurry into the mixing barrel, and the water pump is responsible for conveying the water solution to the mixing barrel, so as to add water and slurry into the mixing barrel in proportion. Then, the water and slurry are stirred by the stirring blades of the mixing barrel to mix and make the slurry required for grouting. Then, the slurry is conveyed into the pipeline where the steel bars are located through the slurry delivery pump of the grouting trolley to complete the grouting operation.

[0003] In the grouting construction process, it is necessary to carry out grouting operations on multiple groups of pipelines containing steel bars. In order to avoid wasting slurry, when the discharge end of the grouting pipeline of the grouting trolley is taken out from the pipeline where the steel bars are located, the slurry delivery pump is usually turned off, and then the discharge end of the grouting pipeline of the grouting trolley is moved to other pipelines containing groups of steel bars, and then the slurry delivery pump is restarted. Therefore, the start-stop operation of the slurry delivery pump is often seen in the grouting construction process. However, repeated start-stop of the slurry delivery pump will affect the service life of the slurry delivery pump and may cause the slurry in the pipeline to coagulate, which is not conducive to the development of grouting construction. In addition, due to factors such as stones and other substances mixed in the slurry or water solution and uneven stirring of the mixing barrel, the conveyed slurry may be mixed with large particle substances. Therefore, directly conveying the large particle substances in the slurry into the pipeline where the steel bars are located will affect the compactness of pipeline grouting and thus affect the quality of pipeline grouting. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the utility model provides a grouting conveying pipeline of a prestressed grouting trolley, which reduces the number of repeated start-stop of the slurry delivery pump, reduces the occurrence of slurry solidification in the pipeline, is convenient for slurry delivery under various working conditions, and can filter the conveyed slurry, so as to overcome the defects in the prior art.

[0005] The technical solution adopted by the utility model is as follows: A grouting and conveying pipeline for a prestressed grouting trolley, including a first grouting pipe, a master control valve arranged on the first grouting pipe, and a grouting joint arranged at the feeding end of the first grouting pipe. The discharging end of the first grouting pipe is communicated with the feeding end of a second grouting pipe. The discharging end of the second grouting pipe is communicated with the first end of a first three-way joint. The second end of the first three-way joint is communicated with the feeding end of a third grouting pipe. The third end of the first three-way joint is communicated with the feeding end of a fourth grouting pipe. The discharging end of the fourth grouting pipe is communicated with the first end of a second three-way joint. The second end of the second three-way joint is communicated with the feeding end of a return grouting pipe. The third end of the second three-way joint is communicated with the feeding end of a fifth grouting pipe. The discharging end of the fifth grouting pipe is communicated with the feeding end of a filtering joint. The discharging end of the filtering joint is communicated with a grouting outlet pipe. The discharging end of the third grouting pipe is communicated with the grouting outlet pipe. Grouting valves are arranged on the third grouting pipe, the fourth grouting pipe, the return grouting pipe, the fifth grouting pipe, and the grouting outlet pipe.

[0006] Preferably, the grouting valve arranged on the grouting outlet pipe is located between the discharging end of the grouting outlet pipe and the discharging end of the third grouting pipe. The discharging end of a pressurizing pipe is communicated with the grouting outlet pipe. The discharging end of the pressurizing pipe is located between the discharging end of the grouting outlet pipe and the grouting valve arranged on the grouting outlet pipe. A first one-way valve is arranged on the pressurizing pipe, and the discharging end of the first one-way valve faces the discharging end of the pressurizing pipe.

[0007] Preferably, the pressurizing pipe is obliquely installed on the grouting outlet pipe. The feeding side of the pressurizing pipe is above the feeding side of the grouting outlet pipe. A second one-way valve is arranged on the grouting outlet pipe, and the discharging end of the second one-way valve faces the discharging end of the pressurizing pipe. The second one-way valve is located between the grouting valve arranged on the grouting outlet pipe and the discharging end of the pressurizing pipe.

[0008] Preferably, filter plates are arranged inside both the first three-way joint and the filtering joint. The filter plate arranged inside the first three-way joint is in contact with the feeding end of the third grouting pipe, and a plurality of filter holes are evenly formed on the filter plate.

[0009] Preferably, a thermometer is arranged on the second grouting pipe, and a heating sleeve is sleeved on the first grouting pipe. The heating sleeve includes a sleeve made of heat-insulating material and a heating resistance wire spirally wound around the inner wall of the sleeve. The heating resistance wire is embedded on the inner wall of the sleeve, and the inner side of the heating resistance wire is in contact with the first grouting pipe.

[0010] Preferably, a pressure gauge is arranged on the second grouting pipe, and the pressure gauge is located between the thermometer and the feeding end of the second grouting pipe.

[0011] The beneficial effects of the present utility model are as follows: Firstly, through the slurry return pipe provided in the present utility model, the slurry can flow back to the mixing barrel of the grouting trolley through the slurry return pipe, thereby forming a conveying and reflux pipeline for conveying the slurry, further reducing the number of repeated starts and stops of the slurry conveying pump and reducing the occurrence of slurry solidification in the pipeline. Moreover, in the present utility model, grouting valves are provided on the third grouting pipe, the fourth grouting pipe, the slurry return pipe, the fifth grouting pipe and the slurry outlet pipe, thereby creating multiple slurry conveying paths to meet the slurry conveying under various working conditions. And through the filter joint provided in the present utility model, the slurry conveyed from the fifth grouting pipe to the slurry outlet pipe is filtered to prevent large particles mixed in the slurry from being conveyed into the prestressed member.

[0012] Secondly, through the connecting head pressure pipe and the first one-way valve on the slurry outlet pipe in the present utility model, gas is conveyed to the pressure pipe by using an air pump, thereby pressurizing the slurry in the slurry outlet pipe, facilitating the perfusion of the slurry into the prestressed member. By obliquely installing the pressure pipe on the slurry outlet pipe, the discharging end of the pressure pipe faces the discharging end of the slurry outlet pipe, and thus the gas conveyed by the pressure pipe is conveyed towards the discharging end of the slurry outlet pipe. And in the present utility model, the second one-way valve is provided to prevent the gas from flowing into the third grouting pipe or the fifth grouting pipe to ensure the stable progress of pressurization.

[0013] Thirdly, filter plates are provided in both the first three-way joint and the filter joint in the present utility model to filter the slurry conveyed from the fifth grouting pipe and the third grouting pipe to the slurry outlet pipe. By switching the slurry conveying path, the slurry can wash the filter plate, and thus the large particle substances screened out by the filter plate can be flushed out through the slurry return pipe, which is convenient for the repeated use of the filter plate. And through the thermometer and the heating sleeve provided in the present utility model, it is convenient to detect the temperature of the slurry in the second grouting pipe. The heating resistance wire of the heating sleeve is electrically connected to the external power supply circuit, so as to control the heating resistance wire of the heating sleeve to heat the first grouting pipe when the temperature detected by the thermometer is too low, that is, to heat the flowing slurry in the first grouting pipe to prevent the slurry from coagulating due to too low temperature. Moreover, through the pressure gauge provided in the present utility model, the pressure change in the second grouting pipe is detected to judge the blockage condition of the filter plate, so as to facilitate the timely flushing of the filter plate. Description of the Drawings

[0014] Figure 1 It is a three-dimensional schematic diagram of the present utility model.

[0015] Figure 2 It is a structural schematic diagram of the present utility model.

[0016] Figure 3 It is a sectional three-dimensional view of the first three-way joint in the present utility model.

[0017] Figure 4 It is a sectional three-dimensional view of the filter joint in the present utility model.

[0018] Figure 5 This is a sectional assembly drawing of the grouting pipe 1, the grouting joint, and the heating sleeve in the present utility model. Specific embodiments

[0019] As Figures 1 to 5 shown, a grouting delivery pipeline of a prestressed grouting trolley includes a grouting pipe 1, a master control valve 2 provided on the grouting pipe 1, and a grouting joint 3 provided at the feeding end of the grouting pipe 1. The discharging end of the grouting pipe 1 is communicated with the feeding end of a grouting pipe 4. The discharging end of the grouting pipe 4 is communicated with the first end of a tee joint 5. The second end of the tee joint 5 is communicated with the feeding end of a grouting pipe 6. The third end of the tee joint 5 is communicated with the feeding end of a grouting pipe 7. The discharging end of the grouting pipe 7 is communicated with the first end of a tee joint 8. The second end of the tee joint 8 is communicated with the feeding end of a return pipe 9. The third end of the tee joint 8 is communicated with the feeding end of a grouting pipe 10. The discharging end of the grouting pipe 10 is communicated with the feeding end of a filtering joint 11. The discharging end of the filtering joint 11 is communicated with a discharging pipe 12. The discharging end of the grouting pipe 6 is connected to the discharging pipe 12. The grouting joint 3 is connected to the slurry delivery pump of the grouting trolley. Through the operation of the slurry delivery pump, the slurry prepared by the grouting trolley is transported into the grouting pipe 1. The discharging pipe 12 and the return pipe 9 are respectively used to output the slurry. The discharging end of the return pipe 9 is connected to the mixing barrel of the grouting trolley, thereby forming a transport and return path, reducing the number of repeated starts and stops of the slurry delivery pump, and reducing the occurrence of slurry solidification in the pipeline. The discharging pipe 12 fills the slurry into the prestressed member through a connecting hose. The grouting pipes 6, 7, the return pipe 9, the grouting pipe 10, and the discharging pipe 12 are all provided with grouting valves 13. By controlling the opening or closing of several grouting valves 13, the slurry delivery path of the present utility model can be switched. Through the provided filtering joint 11, the slurry transported from the grouting pipe 10 to the discharging pipe 12 is filtered to prevent large particles mixed in the slurry from being transported into the prestressed member.

[0020] In this embodiment, the grouting valve 13 provided on the discharging pipe 12 is located between the discharging end of the discharging pipe 12 and the discharging end of the grouting pipe 6. The discharging end of a pressurizing pipe 14 is communicated with the discharging pipe 12. The discharging end of the pressurizing pipe 14 is located between the discharging end of the discharging pipe 12 and the grouting valve 13 provided on the discharging pipe 12. A first one-way valve 15 is provided on the pressurizing pipe 14. The discharging end of the first one-way valve 15 faces the discharging end of the pressurizing pipe 14. The pressurizing pipe 14 is connected to an air pump, thereby using the air pump to transport gas into the discharging pipe 12, so as to pressurize the slurry in the discharging pipe 12 and facilitate the filling of the slurry into the prestressed member.

[0021] Specifically, the pressure pipe 14 is inclined and installed on the slurry discharge pipe 12. The feeding side of the pressure pipe 14 is located above the feeding side of the slurry discharge pipe 12, so that the discharging end of the pressure pipe 14 faces the discharging end of the slurry discharge pipe 12, facilitating the conveyance of gas by the pressure pipe 14 towards the discharging end of the slurry discharge pipe 12. A second one-way valve 16 is provided on the slurry discharge pipe 12. The discharging end of the second one-way valve 16 faces the discharging end of the pressure pipe 14. The second one-way valve 16 is located between the grouting valve 13 provided on the slurry discharge pipe 12 and the discharging end of the pressure pipe 14, thereby preventing gas from flowing into the grouting pipe three 6 or the grouting pipe five 10.

[0022] Please refer to again Figures 3 to 4 , filter plates 17 are provided inside both the tee joint one 5 and the filter joint 11. The filter plate 17 provided inside the tee joint one 5 is in contact with the feeding end of the grouting pipe three 6. A number of filter holes are evenly formed on the filter plate 17. Through the provided filter plate 17, the slurry conveyed by the grouting pipe five 10 and the grouting pipe three 6 to the slurry discharge pipe 12 can be filtered. By switching the slurry conveying path, the slurry can wash the filter plate 17, and thus the large particle substances screened out by the filter plate 17 can be flushed out through the return slurry pipe 9. A filter is provided between the return slurry pipe 9 and the mixing barrel of the prestressed grouting trolley. The filter is used to screen out the large particle substances carried by the slurry, thereby preventing the large particle substances carried by the slurry from being conveyed back into the mixing barrel of the prestressed grouting trolley, and further improving the stability of the grouting construction.

[0023] Please refer to again Figure 5 , a thermometer 18 is provided on the grouting pipe two 4. A heating sleeve 19 is sleeved on the grouting pipe one 1. The heating sleeve 19 includes a sleeve made of heat-insulating material and a heating resistance wire spirally wound around the inner wall of the sleeve. The heating resistance wire is embedded on the inner wall of the sleeve. The inner side of the heating resistance wire is in contact with the grouting pipe one 1. The thermometer 18 is used to detect the temperature of the slurry in the grouting pipe two 4. The heating resistance wire of the heating sleeve 19 is electrically connected to an external power supply circuit. When the temperature detected by the thermometer 18 is too low, the heating resistance wire of the heating sleeve 19 is controlled to heat, heating the slurry flowing in the grouting pipe one 1 to prevent the slurry from coagulating due to too low temperature.

[0024] In this embodiment, a pressure gauge 20 is provided on the grouting pipe two 4. The pressure gauge 20 is located between the thermometer 18 and the feeding end of the grouting pipe two 4. The pressure gauge 20 is used to detect the pressure change in the grouting pipe two 4. According to the pressure change, the clogging condition of the filter plate 17 is judged, so as to facilitate flushing the filter plate 17 in a timely manner.

[0025] The usage method of this product is as follows: As Figures 1 to 5As shown in the figure, before using this product, it is necessary to use a prestressed grouting trolley to complete the preparation of the slurry. That is, move the prestressed grouting trolley into the construction site, and use a material conveyor and a water pump to transport the slurry and water into the mixing barrel. Then, use the mixing blades to mix the water and the slurry to make the slurry required for grouting. Then, transport the slurry into the pipeline containing prestressed steel bars. That is, install one end of the hose on the discharge end of the outlet pipe 12, and place the other end of the hose in the pipeline containing prestressed steel bars. Open the master control valve 2, then open the grouting valves 13 on the grouting pipe four 7, the grouting pipe five 10 and the outlet pipe 12, and close the grouting valves 13 on the grouting pipe three 6 and the return pipe 9. Start the slurry delivery pump of the prestressed grouting trolley and the air pump connected to the pressure pipe 14, so that the slurry is transported through the grouting pipe one 1, the grouting pipe two 4, the grouting pipe four 7, the grouting pipe five 10 and the outlet pipe 12 into the pipeline containing prestressed steel bars. Then, when moving the other end of the hose to other pipes to be grouted, first open the grouting valves 13 on the grouting pipe three 6 and the return pipe 9, and then close the grouting valves 13 on the grouting pipe four 7 and the outlet pipe 12, so that the slurry is transported through the grouting pipe one 1, the grouting pipe two 4, the grouting pipe three 6, the outlet pipe 12, the grouting pipe five 10 and the return pipe 9 into the mixing barrel of the prestressed grouting trolley, thus avoiding shutting down the slurry delivery pump of the stress grouting trolley and flushing the filter joint 11 for repeated grouting operations.

[0026] It should be noted that by opening the grouting valves 13 on the grouting pipe three 6 and the outlet pipe 12, and closing the grouting valves 13 provided on the grouting pipe four 7, the return pipe 9 and the grouting pipe five 10, a second slurry delivery channel can be formed. However, when flushing the filter plate 17 in the tee joint one 5, it is necessary for the slurry to be transported from the grouting pipe two 4 to the grouting pipe four 7. In comparison, the filter plate 17 of the tee joint one 5 can only clean one side of the filter plate 17, while the filter joint 11 can perform backwashing and impurity removal. Therefore, the flushing effect of the filter plate 17 of the tee joint one 5 is inferior to that of the filter joint 11. Therefore, the formed second slurry delivery channel is an alternative delivery channel.

[0027] The utility model provides a grouting delivery pipeline for a prestressed grouting trolley, which can reduce the number of repeated starts and stops of the slurry delivery pump, reduce the occurrence of slurry solidification in the pipeline, facilitate slurry delivery under various working conditions, and can filter the transported slurry, making the utility model have a broad market prospect.

[0028] The above embodiments are only the preferred embodiments of the utility model, and do not limit the scope of implementation of the utility model. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the utility model patent should be included in the scope of the utility model patent application.

Claims

1. A grouting delivery pipeline of a prestressed grouting trolley, comprising a grouting pipe (1), a master control valve (2) provided on the grouting pipe (1), and a grouting joint (3) provided at the feed end of the grouting pipe (1), characterized in that: The discharge end of the grouting pipe 1 (1) is connected to the feed end of the grouting pipe 2 (4), the discharge end of the grouting pipe 2 (4) is connected to the first end of the tee joint 1 (5), the second end of the tee joint 1 (5) is connected to the feed end of the grouting pipe 3 (6), the third end of the tee joint 1 (5) is connected to the feed end of the grouting pipe 4 (7), the discharge end of the grouting pipe 4 (7) is connected to the first end of the tee joint 2 (8), the second end of the tee joint 2 (8) is connected to the feed end of the return grouting pipe (9), and the discharge end of the grouting pipe 4 (7) is connected to the first end of the tee joint 2 (8), and the second end of the tee joint 2 (8) is connected to the feed end of the return grouting pipe (9). The material end, the third end of the three-way joint two (8) is connected to the feed end of the grouting pipe five (10), the discharge end of the grouting pipe five (10) is connected to the feed end of the filter joint (11), the discharge end of the filter joint (11) is connected to the slurry discharge pipe (12), and the discharge end of the grouting pipe three (6) is connected to the slurry discharge pipe (12); the grouting pipe three (6), the grouting pipe four (7), the return slurry pipe (9), the grouting pipe five (10) and the slurry discharge pipe (12) are all provided with grouting valves (13).

2. The grouting delivery pipeline of the prestressed grouting trolley according to claim 1 is characterized in that: The grouting valve (13) provided on the slurry outlet pipe (12) is located between the discharge end of the slurry outlet pipe (12) and the discharge end of the grouting pipe three (6); the slurry outlet pipe (12) is connected to the discharge end of the pressurizing pipe (14); the discharge end of the pressurizing pipe (14) is located between the discharge end of the slurry outlet pipe (12) and the grouting valve (13) provided on the slurry outlet pipe (12); the pressurizing pipe (14) is provided with a first one-way valve (15); the discharge end of the first one-way valve (15) faces the discharge end of the pressurizing pipe (14).

3. The grouting conveying pipeline of the prestressed grouting trolley according to claim 2 is characterized in that: The pressurizing pipe (14) is installed obliquely on the slurry outlet pipe (12), the feed side of the pressurizing pipe (14) is located above the feed side of the slurry outlet pipe (12), a second one-way valve (16) is provided on the slurry outlet pipe (12), the discharge end of the second one-way valve (16) faces the discharge end of the pressurizing pipe (14), and the second one-way valve (16) is located between the grouting valve (13) provided on the slurry outlet pipe (12) and the discharge end of the pressurizing pipe (14).

4. The grouting conveying pipeline of the prestressed grouting trolley according to claim 1 is characterized in that: The three-way joint (5) and the filter joint (11) are both provided with a filter plate (17). The filter plate (17) provided in the three-way joint (5) is in contact with the feed end of the grouting pipe (6). A plurality of filter holes are evenly provided on the filter plate (17).

5. The grouting conveying pipeline of the prestressed grouting trolley according to claim 1 is characterized in that: A temperature gauge (18) is provided on the second grouting pipe (4), and a heating sleeve (19) is provided on the first grouting pipe (1). The heating sleeve (19) comprises a sleeve made of a thermal insulation material and a heating resistance wire spirally wound on the inner wall of the sleeve. The heating resistance wire is embedded in the inner wall of the sleeve, and the inner side of the heating resistance wire is in contact with the first grouting pipe (1).

6. The grouting conveying pipeline of the prestressed grouting trolley according to claim 5 is characterized in that: The second grouting pipe (4) is provided with a pressure gauge (20), and the pressure gauge (20) is located between the temperature gauge (18) and the feed end of the second grouting pipe (4).

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