A method for preparing high-strength anti-permeability concrete drainage pipe

Abstract

The present invention belongs to the technical field of pipeline preparation, and in particular, relates to a preparation method of a high-strength anti-permeability concrete drainage pipe, which comprises the following steps: according to the concrete pipe to be produced, a corresponding steel outer mold and a steel inner mold are prepared, the steel inner mold in step S1 is installed on the mold installation base, and the two steel outer molds are molded and locked, and then a steel skeleton is installed, and then, the steel outer mold after the mold is hoisted to the mold installation base by a hoisting device, and concrete raw materials are prepared, and they are sequentially put into a concrete mixer according to a preset ratio. The present invention not only improves the compactness of the concrete material, but also the strength of the formed concrete pipe is high, and the anti-permeability of the concrete drainage pipe can be increased by compacting the concrete.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline preparation, and in particular relates to a method for preparing a high-strength anti-permeability concrete drainage pipe. Background Art

[0002] Concrete pipes are one of the most common drainage pipes. Concrete pipes have low preparation costs and simple structures, so they are widely used. The preparation quality of concrete pipes is directly related to their lifespan and effectiveness when used as drainage pipes in the future.

[0003] At present, there are many methods for preparing concrete pipes, such as preparing by using a centrifuge in combination with a mold. However, for large-diameter concrete pipes, the centrifugal preparation method is not effective. Therefore, large-diameter concrete pipes are generally prepared by mold vibration, that is, concrete is injected into the mold and vibrated to compact the concrete to form the concrete pipe.

[0004] However, although the vibration method can make the concrete compact, since the concrete is covered between the inner mold and the outer mold, only part of the air can be discharged during vibration. The air that has not been discharged will cause pits on the surface of the concrete pipe after the concrete pipe is formed, and in severe cases, there will be air holes. Therefore, we often see dense pits on the surface of the concrete pipe after forming. Although it can also meet the use requirements of the drainage pipe, the compaction and density of the concrete pipe are still not good enough, and the use effect is not good. For this reason, we propose a preparation method of a high-strength anti-penetration concrete drainage pipe to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a method for preparing a high-strength anti-permeability concrete drainage pipe in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: a method for preparing a high-strength anti-permeability concrete drainage pipe, the preparation method comprising the following steps:

[0007] S1. Prepare corresponding steel outer molds and steel inner molds according to the concrete pipes to be produced;

[0008] S2, installing the steel inner mold in step S1 on the mold installation base, and locking the two steel outer molds together, and then installing the steel skeleton, and then lifting the steel outer mold after the mold is closed to the mold installation base by lifting equipment;

[0009] S3, prepare the concrete raw materials, and put them into the concrete mixer in sequence according to the preset proportion;

[0010] S4, introducing the concrete material mixed in step S3 into between the steel outer mold and the steel inner mold;

[0011] S5. When the concrete material is poured to the top of the steel outer mold for the first time, the vibration extrusion and suction mechanism on the steel outer mold is started. After 10 minutes, the concrete material is introduced again, and the vibration extrusion and suction mechanism is operated again until the concrete material fills the space between the steel outer mold and the steel inner mold.

[0012] S6. After the concrete pipe is finalized, the mold installation base is directly hoisted to the curing room by hoisting equipment, and after the curing is completed, the mold is removed to obtain the concrete pipe;

[0013] The above-mentioned vibration extrusion and suction mechanism for extruding and exhausting concrete materials includes a plurality of magnetrons fixedly arranged on the outer side wall of a steel outer mold, the side wall of the steel outer mold is provided with a plurality of mounting holes corresponding to the positions of the magnetrons, and a waveguide matching the magnetron is fixedly installed inside each mounting hole, and the end of each waveguide is arranged corresponding to the wave-emitting end of the magnetron on the same side, an annular pressure plate is arranged above the steel outer mold and the steel inner mold, and the annular pressure plate and the steel outer mold are commonly connected with a downward pressure drive assembly, and a suction assembly is provided on the annular pressure plate.

[0014] Preferably, a plurality of cavities are provided inside the steel inner mold, and a plurality of through holes are provided in the cavity wall of each cavity, a side pressure plate is slidably provided inside each through hole, a side wall of each side pressure plate is fixedly connected with an ejector rod, a fixing plate is fixedly connected inside each cavity, and the side wall of each fixing plate is slidably connected with the rod wall of the ejector rod, a hemisphere is fixedly connected to the rod end of each ejector rod, and a spring is fixedly connected between the side wall of each hemisphere and the side wall of the fixing plate.

[0015] Preferably, the downward pressure driving assembly includes a plurality of fixed blocks fixedly arranged on a steel outer mold, and a hydraulic cylinder is fixedly inserted into the end face of each fixed block, and the output end of each hydraulic cylinder is fixedly connected to a connecting frame, and the lower end of each connecting frame is fixedly connected to a steel rod, and the lower end of each steel rod is fixedly connected to the upper end of the annular pressure plate.

[0016] Preferably, the suction assembly includes an annular air cavity opened inside the annular pressure plate, and a plurality of suction holes are opened on the lower cavity wall of the annular air cavity, a suction air pump is fixedly installed on the end face of each annular pressure plate, and the suction end of the suction air pump is fixedly connected to the annular air cavity.

[0017] Preferably, an installation cavity is opened on the inner upper side of the steel inner mold, and the lower cavity wall of the installation cavity is rotatably connected to a rotating shaft, the shaft wall of the rotating shaft is rotatably connected to the cavity wall of each cavity, the shaft wall of the rotating shaft located inside each cavity is fixedly sleeved with an impact turntable matching the hemisphere, the lower cavity wall of the installation cavity is fixedly installed with a driving motor, and the output end of the driving motor is transmission-connected to the rotating shaft.

[0018] Preferably, a plastic plug is provided on one side of each of the waveguides, and the plastic plug is fixedly disposed inside the mounting hole on the same side.

[0019] Preferably, an annular liquid cavity is provided on the inner upper side of the side wall of the steel outer mold, and a plurality of liquid replenishing holes are provided on the inner cavity wall of the annular liquid cavity, and a grouting pipe is fixedly inserted into the cavity wall of the annular liquid cavity.

[0020] Preferably, in the step S1, a release agent needs to be evenly applied to the side walls of the steel outer mold and the steel inner mold.

[0021] Preferably, annular rubber pads are fixedly mounted on the inner and outer walls of the annular pressure plate.

[0022] Compared with the existing technology, the advantages of a preparation method of a high-strength anti-permeability concrete drainage pipe are:

[0023] 1. Through steps S1 to S6, the preparation of the concrete drainage pipe can be completed. Through the vibration suction mechanism, when preparing the concrete drainage pipe, the water inside the concrete material can be induced to vibrate through the principle of microwave thermal radiation, thereby moving the vibration of the concrete material, which is conducive to gas discharge and improves the compactness of the concrete material. Through pressure and extrusion from the upper side, the concrete material can be pressed down multiple times. In conjunction with the suction component, the air retention inside the concrete material can be minimized, which not only improves the compactness of the concrete material, but also makes the strength of the formed concrete pipe high. In addition, through the compaction of the concrete, the anti-permeability of the concrete drainage pipe can be increased.

[0024] 2. Through the cooperation of the cavity, side pressure plate, ejector rod, fixed plate, hemisphere and spring, side pressure compaction can be performed on the steel inner mold to further improve the compaction effect of concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a vibration extrusion and suction mechanism of a method for preparing a high-strength anti-permeability concrete drainage pipe provided by the present invention;

[0026] Figure 2 It is an enlarged structural diagram of part A of a method for preparing a high-strength anti-permeability concrete drainage pipe provided by the present invention;

[0027] Figure 3It is an enlarged structural diagram of part B of a method for preparing a high-strength anti-permeability concrete drainage pipe provided by the present invention;

[0028] Figure 4 It is a structural schematic diagram of a steel inner mold of a method for preparing a high-strength anti-permeability concrete drainage pipe provided by the present invention.

[0029] In the figure: 1. Steel outer mold; 2. Steel inner mold; 3. Mold mounting base; 4. Vibration extrusion suction mechanism; 5. Magnetron; 6. Mounting hole; 7. Waveguide; 8. Annular pressure plate; 9. Cavity; 10. Side pressure plate; 11. Ejector rod; 12. Fixed plate; 13. Hemisphere; 14. Spring; 15. Fixed block; 16. Hydraulic cylinder; 17. Connecting frame; 18. Steel rod; 19. Annular air cavity; 20. Suction hole; 21. Suction air pump; 22. Mounting cavity; 23. Rotating shaft; 24. Impact turntable; 25. Driving motor; 26. Plastic plug; 27. Annular liquid cavity; 28. Liquid replenishment hole; 29. ​​Grouting pipe; 30. Annular rubber pad. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1-4 As shown, a method for preparing a high-strength anti-permeability concrete drainage pipe comprises the following steps:

[0032] S1. Prepare the corresponding steel outer mold 1 and steel inner mold 2 according to the concrete pipe to be produced. It is necessary to evenly apply a release agent on the side walls of the steel outer mold 1 and the steel inner mold 2 to facilitate subsequent demoulding;

[0033] S2, installing the steel inner mold 2 in step S1 on the mold installation base 3, and locking the two steel outer molds 1 together, and then installing the steel skeleton, and then lifting the steel outer mold 1 after the mold is closed to the mold installation base 3 by lifting equipment;

[0034] S3, prepare the concrete raw materials, and put them into the concrete mixer in sequence according to the preset proportion;

[0035] S4, introducing the concrete material mixed in step S3 into between the steel outer mold 1 and the steel inner mold 2;

[0036] S5, when the concrete material is initially poured to the top of the steel outer mold 1, the vibration extrusion suction mechanism 4 on the steel outer mold 1 is started. After 5 minutes, the concrete material is introduced again, and the vibration extrusion suction mechanism 4 is operated again until the concrete material fills the space between the steel outer mold 1 and the steel inner mold 2;

[0037] S6, after the concrete pipe is finalized, the mold installation base 3 is directly hoisted into the curing room by hoisting equipment, and after the curing is completed, the mold is removed to obtain the concrete pipe;

[0038] The vibration extrusion and suction mechanism 4 used for extruding and exhausting concrete materials includes a plurality of magnetrons 5 fixedly arranged on the outer side wall of the steel outer mold 1. The side wall of the steel outer mold 1 is provided with a plurality of mounting holes 6 corresponding to the positions of the magnetrons 5, and a waveguide 7 matching the magnetron 5 is fixedly installed inside each mounting hole 6. The end of each waveguide 7 is arranged correspondingly to the wave-emitting end of the magnetron 5 on the same side. An annular pressure plate 8 is arranged above the steel outer mold 1 and the steel inner mold 2, and the annular pressure plate 8 and the steel outer mold 1 are connected together with a downward pressure driving assembly, and a suction assembly is provided on the annular pressure plate 8.

[0039] A plurality of cavities 9 are provided inside the steel inner mold 2, and a plurality of through holes are provided in the cavity wall of each cavity 9, a side pressure plate 10 is slidably provided inside each through hole, and a side wall of each side pressure plate 10 is fixedly connected with an ejector rod 11, a fixing plate 12 is fixedly connected inside each cavity 9, and the side wall of each fixing plate 12 is slidably connected with the rod wall of the ejector rod 11, a hemisphere 13 is fixedly connected to the rod end of each ejector rod 11, and a spring 14 is fixedly connected between the side wall of each hemisphere 13 and the side wall of the fixing plate 12. Through this arrangement, the side top compaction of the concrete material can be carried out by side top method, thereby improving the molding quality of the concrete material.

[0040] The downward pressure driving assembly includes a plurality of fixed blocks 15 fixedly arranged on the steel outer mold 1, and the end face of each fixed block 15 is fixedly plugged with a hydraulic cylinder 16, the output end of each hydraulic cylinder 16 is fixedly connected to a connecting frame 17, and the lower end of each connecting frame 17 is fixedly connected to a steel rod 18, and the lower end of each steel rod 18 is fixedly connected to the upper end of the annular pressure plate 8. Through this arrangement, the downward movement of the annular pressure plate 8 can be easily controlled.

[0041] The suction assembly includes an annular air cavity 19 opened inside the annular pressure plate 8, and a plurality of suction holes 20 are opened on the lower cavity wall of the annular air cavity 19. A suction air pump 21 is fixedly installed on the end face of each annular pressure plate 8, and the suction end of the suction air pump 21 is fixedly connected to the annular air cavity 19, so as to facilitate the extraction of the squeezed air.

[0042] An installation cavity 22 is opened on the upper inner side of the steel inner mold 2, and the lower cavity wall of the installation cavity 22 is rotatably connected with a rotating shaft 23, the axial wall of the rotating shaft 23 is rotatably connected with the cavity wall of each cavity 9, and the axial wall of the rotating shaft 23 located inside each cavity 9 is fixedly sleeved with an impact turntable 24 matching the hemisphere 13, and the lower cavity wall of the installation cavity 22 is fixedly installed with a driving motor 25, and the output end of the driving motor 25 is transmission-connected with the rotating shaft 23, which can facilitate driving the impact of each hemisphere 13 to drive the ejection rod 11 to push outward.

[0043] A plastic plug 26 is provided on one side of each waveguide 7 , and the plastic plug 26 is fixedly arranged inside the mounting hole 6 on the same side, so as to prevent concrete material from entering the mounting hole 6 .

[0044] An annular liquid cavity 27 is provided on the upper inner side of the side wall of the steel outer mold 1, and a plurality of liquid replenishing holes 28 are provided on the inner wall of the annular liquid cavity 27. A grouting pipe 29 is fixedly inserted into the cavity wall of the annular liquid cavity 27 to replenish the slurry inside the upper concrete material and reduce the influence of the concrete liquid flowing downward due to gravity.

[0045] Annular rubber pads 30 are fixedly mounted on the inner and outer walls of the annular pressure plate 8. This arrangement can improve the sealing performance between the annular pressure plate 8 and the steel inner mold 2 and the steel outer mold 1 after the annular pressure plate 8 is pressed down.

[0046] The operating principle of the present invention is described as follows: according to the concrete pipe to be produced, the corresponding steel outer mold 1 and steel inner mold 2 are prepared, the steel inner mold 2 is installed on the mold installation base 3, and the two steel outer molds 1 are molded and locked, and then the steel frame is installed. Subsequently, the steel outer mold 1 after mold closing is lifted to the mold installation base 3 by a lifting device, and the concrete raw materials are prepared and put into the concrete mixer in sequence according to a preset ratio, and the mixed concrete material is introduced between the steel outer mold 1 and the steel inner mold 2. When the concrete material is first poured to the top of the steel outer mold 1, the magnetron 5 is started, and the magnetron 5 emits microwaves, which are introduced into the steel outer mold 1 through the waveguide 7. In the mold 1 and the steel inner mold 2, microwaves can induce high-frequency vibration of water molecules inside the concrete material and make the concrete hot. Under the effect of increased temperature, the air rises, and when the microwave is started, the annular pressure plate 8 moves down to press the concrete material, and the suction air pump 21 is started simultaneously to extract the air inside the concrete material. After 5 minutes, the concrete material is introduced again, and the extrusion and suction mechanism works until the concrete material fills the space between the steel outer mold 1 and the steel inner mold 2. After the concrete pipe is finalized, the mold mounting base 3 is directly lifted into the curing room by the lifting equipment, and after the curing is completed, the mold is removed to obtain the concrete pipe.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a high-strength anti-permeability concrete drainage pipe, characterized in that: The preparation method comprises the following steps: S1. Prepare corresponding steel outer mold (1) and steel inner mold (2) according to the concrete pipe to be produced; S2, installing the steel inner mold (2) in step S1 on the mold installation base (3), and closing and locking the two steel outer molds (1), and then installing the steel reinforcement skeleton, and then, using a lifting device, lifting the closed steel outer mold (1) to the mold installation base (3); S3, prepare the concrete raw materials, and put them into the concrete mixer in sequence according to the preset proportion; S4, introducing the concrete material mixed in step S3 into between the steel outer mold (1) and the steel inner mold (2); S5. When the concrete material is poured to the top of the steel outer mold (1) for the first time, the vibration extrusion suction mechanism (4) on the steel outer mold (1) is started. After 5 minutes, the concrete material is introduced again, and the vibration extrusion suction mechanism (4) is operated again until the concrete material fills the space between the steel outer mold (1) and the steel inner mold (2); S6, after the concrete pipe is finalized, the mold installation base (3) is directly hoisted into the curing room by hoisting equipment, and after the curing is completed, the mold is removed to obtain the concrete pipe; The vibration extrusion suction mechanism (4) for extruding and exhausting concrete material comprises a plurality of magnetrons (5) fixedly arranged on the outer side wall of a steel outer mold (1), the side wall of the steel outer mold (1) is provided with a plurality of mounting holes (6) corresponding to the positions of the magnetrons (5), and a waveguide (7) matching the magnetrons (5) is fixedly installed inside each mounting hole (6), and the end of each waveguide (7) is arranged corresponding to the wave-emitting end of the magnetron (5) on the same side, an annular pressing plate (8) is arranged above the steel outer mold (1) and the steel inner mold (2), and the annular pressing plate (8) and the steel outer mold (1) are connected to a downward pressing driving assembly, and a suction assembly is arranged on the annular pressing plate (8); The downward pressure driving assembly comprises a plurality of fixed blocks (15) fixedly arranged on the steel outer mold (1), and the end surface of each fixed block (15) is fixedly plugged with a hydraulic cylinder (16), the output end of each hydraulic cylinder (16) is fixedly connected to a connecting frame (17), and the lower end of each connecting frame (17) is fixedly connected to a steel rod (18), and the lower end of each steel rod (18) is fixedly connected to the upper end of the annular pressure plate (8); The suction assembly comprises an annular air cavity (19) opened inside the annular pressure plate (8), and a plurality of suction holes (20) are opened on the lower cavity wall of the annular air cavity (19). A suction air pump (21) is fixedly installed on the end surface of each annular pressure plate (8), and the suction end of the suction air pump (21) is fixedly connected to the annular air cavity (19).

2. The method for preparing a high-strength anti-permeability concrete drainage pipe according to claim 1, characterized in that: The steel inner mold (2) is provided with a plurality of cavities (9) inside, and a plurality of through holes are provided on the cavity wall of each cavity (9), a side pressure plate (10) is slidably provided inside each through hole, and a side wall of each side pressure plate (10) is fixedly connected to an ejector rod (11), a fixing plate (12) is fixedly connected inside each cavity (9), and a side wall of each fixing plate (12) is slidably connected to the rod wall of the ejector rod (11), a hemisphere (13) is fixedly connected to the rod end of each ejector rod (11), and a spring (14) is fixedly connected between the side wall of each hemisphere (13) and the side wall of the fixing plate (12).

3. The method for preparing a high-strength anti-permeability concrete drainage pipe according to claim 1, characterized in that: An installation cavity (22) is provided on the upper inner side of the steel inner mold (2), and a rotating shaft (23) is rotatably connected to the lower cavity wall of the installation cavity (22), and the axial wall of the rotating shaft (23) is rotatably connected to the cavity wall of each cavity (9), and the axial wall of the rotating shaft (23) is fixedly sleeved with an impact turntable (24) matching the hemisphere (13) at the position of the axial wall of the rotating shaft (23) located inside each cavity (9), and a driving motor (25) is fixedly installed on the lower cavity wall of the installation cavity (22), and the output end of the driving motor (25) is drivingly connected to the rotating shaft (23).

4. The method for preparing a high-strength anti-permeability concrete drainage pipe according to claim 1, characterized in that: A plastic plug (26) is provided on one side of each of the waveguides (7), and the plastic plug (26) is fixedly arranged inside the mounting hole (6) on the same side.

5. The method for preparing a high-strength anti-permeability concrete drainage pipe according to claim 1, characterized in that: An annular liquid cavity (27) is provided on the upper inner side of the side wall of the steel outer mold (1), and a plurality of liquid replenishing holes (28) are provided on the inner cavity wall of the annular liquid cavity (27). A grouting pipe (29) is fixedly inserted into the cavity wall of the annular liquid cavity (27).

6. The method for preparing a high-strength anti-permeability concrete drainage pipe according to claim 1, characterized in that: In the step S1, a release agent needs to be evenly applied to the side walls of the steel outer mold (1) and the steel inner mold (2).

7. The method for preparing a high-strength anti-permeability concrete drainage pipe according to claim 1, characterized in that: Annular rubber pads (30) are fixedly mounted on the inner and outer walls of the annular pressure plate (8).

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