Prefabricated outer wall production device

Abstract

The utility model provides a prefabricated outer wall production device which comprises an air bag and an air pipe. The air pipe is arranged in the air bag and connected to the air nozzle of the air bag. The air pipe extends from the air nozzle to the tail end of the airbag. The air pipe is provided with a plurality of air holes in the length direction. The air pipe is arranged, so that air can still be exhausted through the air pipe when any position of the front end of the air bag is attached to the inner wall of the air bag. And then air in the air bag is completely pumped out. The air bag is prevented from being attached to the inner wall of the wallboard and can be taken out smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of wall panel prefabrication devices, and more specifically, to a precast exterior wall production device. Background Art

[0002] The assembly of precast components at the construction site can reduce the construction difficulty of the house and improve the construction efficiency at the same time. The interior of the hollow exterior wall is hollow, which can play the role of heat insulation and sound insulation. Due to its internal hollowness, its processing is also more difficult. In the prior art, an airbag is used to form a cavity inside the wall panel. After the wall panel is produced, the airbag is deflated and then taken out. However, the airbag may adhere to the concrete, making it difficult to remove the airbag. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a precast exterior wall production device, which can be easily separated from and taken out of the concrete.

[0004] The embodiments of the utility model are realized by the following technical solutions:

[0005] A precast exterior wall production device includes an airbag and an air pipe; the air pipe is arranged inside the airbag and connected to the air nozzle of the airbag; the air pipe extends from the air nozzle to the end of the airbag; a plurality of air holes are arranged along the length direction of the air pipe.

[0006] Furthermore, the air pipe is also provided with a plurality of branch pipes; the plurality of branch pipes are distributed around the air pipe.

[0007] Furthermore, the air pipe is an iron pipe; the branch pipes are soft plastic pipes.

[0008] Furthermore, a push plate is arranged at the end of the air pipe; the area of the push plate is larger than the cross-sectional area of the air pipe.

[0009] Furthermore, an air pump is also included; the air pump is connected to the air nozzle.

[0010] Furthermore, a quick connector is arranged in cooperation with the air nozzle and the air pump.

[0011] Furthermore, the air pipe is connected to the air nozzle; the air nozzle is also made of metal.

[0012] The technical solutions of the embodiments of the utility model at least have the following advantages and beneficial effects:

[0013] When the precast exterior wall production device of the present utility model is in use, the airbag is inflated and placed inside the mold, and then concrete is poured. After the concrete hardens, the air inside the airbag is pumped out through the air nozzle. Then the airbag shrinks and is taken out from inside the concrete. Since the concrete is poured densely, there is no gap between the airbag and the inner wall of the concrete wall panel, and thus no air. When the air pressure inside the airbag decreases, there is only an internal and external air pressure difference at the opening of the hole in the wall panel where the airbag is located. That is to say, the airbag will only start from this place and gradually shrink towards the inside of the wall panel. However, the shrinkage of the airbag may cause the inner walls on both opposite sides of the airbag to fit together, thereby closing the air extraction channel, and further preventing the gas inside the airbag from being pumped out further. And a large amount of the airbag fitting to the inner wall of the wall panel makes the airbag unable to be taken out.

[0014] Setting the air pipe enables air to be pumped out through the air pipe still when any position at the front end of the airbag fits due to the fitting of the inner wall of the airbag. Then the air inside the airbag is completely pumped out. To prevent the airbag from fitting to the inner wall of the wall panel and ensure that the airbag can be taken out smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0016] Figure 1 Schematic diagram of the air extraction channel being blocked due to the fitting of the inner wall of the airbag;

[0017] Figure 2 For Figure 1 Schematic diagram of the airbag after setting the air pipe in

[0018] Figure 3 Schematic diagram of the inside of the wall panel being a tubular hole;

[0019] Figure 4 Schematic diagram of the holes inside the wall panel being connected;

[0020] Figure 5 Schematic diagram of the airbag provided with a protrusion.

[0021] Reference numerals: 1 - airbag, 2 - air pipe, 3 - air nozzle, 4 - air hole, 5 - branch pipe, 6 - pushing disc, 7 - protrusion, 8 - connecting column, 9 - wall panel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0023] Embodiment:

[0024] As Figures 1 - 5 shown, the present utility model provides a precast exterior wall production device, including an airbag 1 and an air pipe 2. The air pipe 2 is arranged inside the airbag 1 and connected to the air nozzle 3 of the airbag 1. When the airbag 1 is inflated or deflated, the air flow passes through the air pipe 2. The air pipe 2 extends from the air nozzle 3 to the end of the airbag 1. A number of air holes 4 are arranged along the length direction of the air pipe 2. An air pump is also provided in cooperation. The air pump is connected to the air nozzle 3. The air pump can be a two-way air pump, which can both inflate and exhaust. The air nozzle 3 and the air pump are provided with quick connectors in cooperation, which is convenient for connection and disassembly. This precast exterior wall production device is used in cooperation with a formwork. The formwork is used for external sealing and shaping. The formwork is assembled into a box shape, and the steel mesh is placed inside the box. After placing the inflated airbag 1 behind the steel mesh, concrete can be poured. The concrete fills the gap between the airbag 1 and the formwork, and then a hollow wall panel 9 is formed.

[0025] When the precast exterior wall production device of the present utility model is in use, the airbag 1 is inflated and placed inside the mold, and then concrete is poured. After the concrete hardens, the air inside the airbag 1 is pumped out through the air nozzle 3. Then the airbag 1 shrinks and is taken out from inside the concrete. Since the concrete is poured densely, there is no gap between the airbag 1 and the inner wall of the concrete wall panel 9, and there is no air either. When the air pressure inside the airbag 1 decreases, there is only an internal and external air pressure difference at the opening of the hole in the wall panel 9 where the airbag 1 is located. That is to say, the airbag 1 will only start from this place and gradually shrink into the interior of the wall panel 9. However, the shrinkage of the airbag 1 may cause the inner walls on both sides of the airbag 1 to fit together, thus closing the air extraction channel, and then making the gas inside the airbag 1 unable to be further pumped out, as Figure 1 shown. And a large amount of the airbag 1 fitting to the inner wall of the wall panel 9 makes the airbag 1 unable to be taken out.

[0026] The setting of the air pipe 2 enables air to be pumped out from the rear end of the air pipe 2 still when any position at the front end of the airbag 1 is caused by the inner wall of the airbag 1 fitting together. Then the air inside the airbag 1 is completely pumped out. It is avoided that the airbag 1 fits to the inner wall of the wall panel 9, ensuring that the airbag can be taken out smoothly.

[0027] In this embodiment, the air pipe 2 is also provided with a number of branch pipes 5. The number of branch pipes 5 is distributed around the air pipe 2. The hollow wall panel 9 has two forms, respectively as Figure 3 andFigure 4 As shown. For the convenience of removing the airbag 1, an opening can be reserved during the casting of the wall panel 9. After the airbag 1 is removed, the opening is then sealed and cast.

[0028] Figure 3 The internal structure of the wall panel 9 is relatively simple, and its hollow part is tubular. The overall structure of the airbag 1 can be columnar. Figure 4 Several connecting columns 8 are arranged inside the wall panel 9. The two side panels are connected by several connecting columns 8. Thus, the inside of the wall panel 9 is connected and hollow. For such a wall panel 9, the airbag 1 shown in Figure 5 is needed. Both sides of this airbag 1 are provided with convex parts 7. After several airbags 1 are placed, the convex parts 7 of two adjacent airbags 1 are pressed tightly. After the casting is completed, the convex parts 7 are embedded inside the concrete. If the convex parts 7 extend too long to the side, the part where the convex parts 7 are connected to the main body may be blocked due to the inner wall of the airbag 1 being attached during air extraction, and thus air cannot be extracted. By providing the branch pipe 5 and extending the branch pipe 5 into the convex parts 7, the gas inside the convex parts 7 can be extracted through the branch pipe 5, thus avoiding this problem. Similarly, if Figure 3 the airbag 1 in [description] is set wider, a single air pipe 2 cannot cover the entire inside of the airbag 1 either. Through the branch pipe 5, the entire inside of the airbag 1 can be covered.

[0029] In this embodiment, the air pipe 2 is an iron pipe. The branch pipe 5 is a soft plastic pipe. The air pipe 2 is connected to the air nozzle 3. The air nozzle 3 is also made of metal. In actual use, there may also be some positions where the airbag 1 adheres to the inner wall of the concrete after air extraction. Setting the air pipe 2 as an iron pipe makes the air pipe 2 have greater strength and be rigid. By shaking the air pipe 2, the part where the airbag 1 adheres to the concrete can be torn off. And setting the branch pipe 5 as a flexible pipe makes the branch pipe 5 able to bend. Thus, when the airbag 1 is pulled out, the branch pipe 5 can deform and be smoothly pulled out between the connecting columns 8. Since the air nozzle 3 extends outside the hole of the wall panel 9. When shaking the air pipe 2, the air nozzle 3 can be used as a handle, thus facilitating the operation.

[0030] Since the air pipe 2 is hard, when the airbag 1 is air-extracted and adheres to the air pipe 2, it forms a stick shape. The airbag 1 can be better placed between the steel bar meshes. It is avoided that the airbag 1 bends or shakes and is difficult to be placed inside the steel bar meshes. At the same time, for some difficult-to-pass parts, the airbag 1 can be placed by poking forward with the rigid air pipe 2. To avoid the air pipe 2 piercing the airbag 1, a pushing disk 6 is arranged at the end of the air pipe 2, and the area of the pushing disk 6 is larger than the cross-sectional area of the air pipe 2.

[0031] The above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A precast exterior wall production device, characterized in that: It includes an airbag and a trachea; the trachea is arranged inside the airbag and connected to the nozzle of the airbag; the trachea extends from the nozzle to the end of the airbag; a number of air holes are arranged along the length direction of the trachea.

2. The precast exterior wall production device according to claim 1, characterized in that: The trachea is further provided with a number of branch pipes; a number of the branch pipes are distributed around the trachea.

3. The precast exterior wall production device according to claim 2, characterized in that: The trachea is an iron pipe; the branch pipes are soft plastic pipes.

4. The precast exterior wall production device according to claim 3, characterized in that: A push plate is arranged at the end of the trachea; the area of the push plate is larger than the cross-sectional area of the trachea.

5. The precast exterior wall production device according to claim 4, wherein: It further includes an air pump; the air pump is connected to the nozzle.

6. The precast exterior wall production device according to claim 5, characterized in that: A quick connector is arranged in cooperation with the nozzle and the air pump.

7. The precast exterior wall production device according to claim 6, characterized in that: The trachea is connected to the nozzle; the nozzle is also made of metal.

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