Prefabricated outer wall and production method and construction method thereof

Abstract

The invention relates to the technical field of prefabricated outer walls, and particularly discloses a prefabricated outer wall and a production method and construction method.The prefabricated outer wall comprises a prefabricated outer wall outer frame and a heat preservation and sound insulation board, a heat preservation and sound insulation board containing groove for containing the heat preservation and sound insulation board is formed in the prefabricated outer wall outer frame, and a first inserting groove is formed in the top of the prefabricated outer wall outer frame; a first inserting block matched with the first inserting groove is connected to the bottom of the prefabricated outer wall outer frame, a second inserting groove is formed in one side of the prefabricated outer wall outer frame, and a second inserting block matched with the second inserting groove is connected to the other side of the prefabricated outer wall outer frame; hollow design is adopted in the prefabricated outer wall, the prefabricated outer wall is light in weight, pouring materials are reduced, a worker can conveniently carry and install the prefabricated outer wall, the heat preservation and sound insulation effects are achieved due to the fact that a heat preservation and sound insulation board is arranged in the hollow interior, the heat preservation material is clamped by two layers of sound insulation materials, and the high-quality sound insulation and heat preservation effects are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated exterior walls, in particular to a prefabricated exterior wall and a production method and a construction method thereof. Background Art

[0002] Prefabricated exterior walls refer to wall structures that are prefabricated in factories and installed on site. Prefabricated exterior walls are usually made of reinforced concrete or other materials, and have standardized and industrialized production characteristics, which can improve construction efficiency and quality. Existing prefabricated exterior walls are often inconvenient to transport due to their large size. Handling and installation consume a lot of manpower and material resources. Large blocks of prefabricated exterior walls cannot be decomposed into several small blocks of prefabricated exterior walls for assembly to facilitate transportation and handling. Existing prefabricated exterior walls have poor thermal insulation and sound insulation performance, and both thermal insulation and sound insulation cannot be guaranteed. There are also prefabricated exterior walls assembled in modular form on the market, but the connection firmness and stability between prefabricated exterior walls are poor, and the assembly method is also cumbersome and complicated. Cement is often used to connect smaller prefabricated exterior wall modules. This connection method has poor firmness, poor stability, and is prone to tipping. Existing prefabricated exterior walls are made of reinforced concrete, which results in high costs. For this purpose, a prefabricated exterior wall, a production method thereof, and a construction method are provided. Summary of the invention

[0003] The purpose of the present invention is to provide a prefabricated exterior wall and a production method to solve the problems raised by the above-mentioned background technology in view of the defects of the prior art.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a prefabricated exterior wall, comprising a prefabricated exterior wall frame and a heat-insulating sound insulation board, wherein a heat-insulating sound insulation board placement groove for placing the heat-insulating sound insulation board is provided in the prefabricated exterior wall frame, a first slot is provided at the top of the prefabricated exterior wall frame, a first plug-in block matching the first slot is connected to the bottom of the prefabricated exterior wall frame, and a second slot is provided on one side of two sides of the prefabricated exterior wall frame adjacent to the top, and a second plug-in block matching the second slot is connected to the other side;

[0005] A first grouting hole and a second grouting hole are provided on both sides of the notch of the first slot, a third plugging rod connected to another adjacent prefabricated exterior wall frame is provided on both sides of the first grouting hole and the second grouting hole, a third plugging hole matching the third plugging rod is provided on both sides of the first plugging block, a first plugging rod is protruding from the first plugging block, and a first plugging hole matching the first plugging rod is provided on the top of the thermal insulation and sound insulation board;

[0006] A first slurry outlet hole and a second slurry outlet hole are provided on both sides of the second slot, and the first slurry outlet hole and the second slurry outlet hole are both connected to the first grouting hole through the flow channel, and the sides of the first slurry outlet hole and the second slurry outlet hole are both provided with a second plug rod connected to the outer frame of the prefabricated exterior wall; a third slurry outlet hole and a fourth slurry outlet hole are provided on both sides of the second plug block, and the third slurry outlet hole and the fourth slurry outlet hole are both connected to the second grouting hole through the flow channel, and the sides of the third slurry outlet hole and the fourth slurry outlet hole are provided with a second plug hole matching the second plug rod, the second plug block is also connected to the fourth plug rod, and the side of the thermal insulation and sound insulation board is provided with a fourth plug hole matching the fourth plug rod;

[0007] The heat-insulating and sound-insulating board comprises a first cement foaming layer, a first sound-insulating layer, a heat-insulating layer, a second sound-insulating layer and a second cement foaming layer.

[0008] As a preferred technical solution of the present invention, the thermal insulation layer is a polystyrene foam board, a first sound insulation layer is arranged on one side of the thermal insulation layer, a second sound insulation layer is arranged on the other side of the thermal insulation layer, a first cement foam layer is arranged on one side of the first sound insulation layer, and a second cement foam layer is arranged on the side of the second sound insulation layer.

[0009] As a preferred technical solution of the present invention, the first cement foam layer, the first sound insulation layer, the thermal insulation layer, the second sound insulation layer, and the second cement foam layer are a stacked structure, and the first cement foam layer and the second cement foam layer are both made of cement, slag powder, river sand, foaming agent, and foam stabilizer; the first sound insulation layer is glass wool, and the second sound insulation layer is polyester fiber wool.

[0010] As a preferred technical solution of the present invention, the first plug rod, the second plug rod, the third plug rod and the fourth plug rod are all steel bars.

[0011] As a preferred technical solution of the present invention, the prefabricated exterior wall frame is integrated with the first plug rod, the second plug rod, the third plug rod and the fourth plug rod and is formed by concrete casting.

[0012] As a preferred technical solution of the present invention, the flow channel is provided with a plurality of through holes connected to the placement grooves of the thermal insulation and sound insulation panels.

[0013] A production method for a prefabricated exterior wall, the specific steps are as follows:

[0014] Step 1: Preparation process of prefabricated exterior wall frame: fix the first plug rod, the second plug rod, the third plug rod and the fourth plug rod on the inner keel, the middle part of the inner keel is provided with an inner mold, the inner keel is made of steel bars, the flow channel, the through hole, the second plug hole, the third plug hole, the first grouting hole, the second grouting hole, the first grouting hole, the second grouting hole, the third grouting hole and the fourth grouting hole are installed on both sides of the inner keel, and then the overall frame is wrapped with an outer mold, and then concrete is poured, and after the concrete solidifies, the outer mold and the inner mold are taken out to obtain an untreated prefabricated part, and then the untreated prefabricated part is burned to remove the foam mold, so as to obtain a prefabricated exterior wall;

[0015] Step 2: Preparation process of thermal insulation and sound insulation board:

[0016] Step 2.1: firstly, a heat-insulating layer is arranged in a mold, and then glass wool is arranged on the surface of the heat-insulating layer to form a first sound-insulating layer, and then a first cement foaming layer is arranged on the surface of the first sound-insulating layer, and an upper template is covered;

[0017] Step 2.2: Turn the mold over to make the upper template contact the ground, and then set polyester fiber cotton on the other surface of the insulation layer to form a second sound insulation layer, and then set a second cement foam layer on the surface of the second sound insulation layer, and cover the upper and lower templates;

[0018] Step 3: Place the thermal insulation and sound insulation board into the thermal insulation and sound insulation board placement groove in the prefabricated exterior wall frame.

[0019] A construction method for a prefabricated exterior wall, the specific steps are as follows:

[0020] S1: splicing several prefabricated exterior walls together to form an integral prefabricated exterior wall;

[0021] S11: inserting the first plug at the bottom of the first prefabricated exterior wall into the first slot at the top of the second prefabricated exterior wall, inserting the first plug at the bottom of the first prefabricated exterior wall into the first plug at the top of the thermal insulation board inside the second prefabricated exterior wall, inserting the third plug at the top of the second prefabricated exterior wall into the third plug at the bottom of the first prefabricated exterior wall, and assembling other prefabricated exterior walls in this manner to complete the vertical assembly of the prefabricated exterior walls;

[0022] S12: inserting the second plug rod on the side of the second prefabricated exterior wall into the second plug hole on the side of the third prefabricated exterior wall, inserting the second plug block on the side of the third prefabricated exterior wall into the second slot of the second prefabricated exterior wall, and inserting the fourth plug rod fixed on the second plug block into the fourth plug hole on the side of the second prefabricated exterior wall, and assembling other prefabricated exterior walls in this way to complete the horizontal assembly of the prefabricated exterior walls;

[0023] S2: Then use a high-pressure pump to inject the slurry through the first grouting hole and the second grouting hole. The slurry will enter each prefabricated exterior wall frame through the flow channel, and also enter the thermal insulation and sound insulation board placement groove through the through holes in the flow channel, so that the thermal insulation and sound insulation board is fixed in the prefabricated exterior wall frame.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The interior of this prefabricated exterior wall adopts a hollow design, which is not only light in weight and reduces the casting materials, but also convenient for workers to carry and install. In addition, the internal hollow is also equipped with a heat insulation and sound insulation board to achieve the effect of heat insulation and sound insulation. Two layers of sound insulation materials are used to sandwich the heat insulation materials to achieve high-quality sound insulation and heat preservation effects;

[0026] 2. The installation of the prefabricated exterior walls is very simple and convenient, and each exterior wall is connected to each other, with strong overall stability and no collapse;

[0027] 3. This prefabricated exterior wall is composed of modules spliced ​​together. The exterior wall is provided with interconnected holes. By grouting the holes, each prefabricated exterior wall module is closely connected together, so that the exterior wall forms a stable whole. The thermal insulation and sound insulation board can also be fixed during grouting. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is one of the structural schematic diagrams of the present invention;

[0029] Figure 2 This is the second structural schematic diagram of the present invention;

[0030] Figure 3 It is a schematic diagram of the disassembled structure of the thermal insulation and sound insulation board and the prefabricated exterior wall frame of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the flow channel and the through hole of the present invention;

[0032] Figure 5 It is a cross-sectional view of the thermal insulation and sound insulation board of the present invention.

[0033] In the figure: 1. prefabricated exterior wall frame; 2. first slot; 201. first plug block; 3. second slot; 301. second plug block; 4. first plug hole; 401. first plug rod; 5. first grouting hole; 6. second grouting hole; 7. second plug rod; 701. second plug hole; 8. third plug rod; 801. third plug hole; 9. fourth plug hole; 901. fourth plug rod; 10. first slurry outlet hole; 11. second slurry outlet hole; 12. thermal insulation and sound insulation board; 1201. first cement foaming layer; 1202. first sound insulation layer; 1203. thermal insulation layer; 1204. second sound insulation layer; 1205. second cement foaming layer; 13. thermal insulation and sound insulation board placement groove; 14. third slurry outlet hole; 15. fourth slurry outlet hole; 16. flow channel; 17. through hole. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0035] Example: See Figure 1-2 The present invention provides a technical solution: a prefabricated exterior wall, wherein the prefabricated exterior wall comprises a prefabricated exterior wall frame 1 and a heat-insulating sound-proof board 12, and a heat-insulating sound-proof board placement groove 13 (see Figure 3 ), the heat-insulating sound insulation board placement groove 13 leads to the side of the heat-insulating sound insulation board 12, and the heat-insulating sound insulation board 12 is used to play the role of heat insulation and sound insulation, and the heat-insulating sound insulation board placement groove 13 adopts a hollow design, which can also save materials, a first slot 2 is provided at the top of the prefabricated exterior wall outer frame 1, and a first plug-in block 201 matching the first slot 2 is connected to the bottom of the prefabricated exterior wall outer frame 1. Among the two sides of the prefabricated exterior wall outer frame 1 adjacent to the top, one side is provided with a second slot 3, and the other side is connected with a second plug-in block 301 matching the second slot 3. When assembling the prefabricated exterior wall outer frame 1, the connection between every two adjacent prefabricated exterior wall outer frames 1 adopts the method of inserting the first plug-in block 201 into the first slot 2 and the second plug-in block 301 into the second slot 3. This method is not only convenient for positioning, but also can achieve rapid installation without offset phenomenon;

[0036] like Figure 1-2As shown, both sides of the notch of the first slot 2 are provided with a first grouting hole 5 and a second grouting hole 6, and grout is injected by using the first grouting hole 5 and the second grouting hole 6. Both sides of the first grouting hole 5 and the second grouting hole 6 are provided with a third plug rod 8 connected to another adjacent prefabricated exterior wall frame 1. Both sides of the first plug block 201 are provided with a third plug hole 801 matching the third plug rod 8. The third plug rod 8 is inserted into the third plug hole 801 to realize the vertical installation of the prefabricated exterior wall frame 1. The first plug block 201 is protruded with a first plug rod 401, and the first plug rod 401 is used to connect to another adjacent prefabricated exterior wall frame 1. The top of the thermal insulation and sound insulation board 12 is provided with a first plug hole 4 matching the first plug rod 401, so that the thermal insulation and sound insulation board 12 can be connected to the prefabricated exterior wall frame 1;

[0037] like Figure 1-2 and Figure 4 As shown, both sides of the second slot 3 are provided with a first slurry outlet hole 10 and a second slurry outlet hole 11, through which the slurry can flow out, and the first slurry outlet hole 10 and the second slurry outlet hole 11 are connected to the first grouting hole 5 through the flow channel 16, so that each prefabricated exterior wall frame 1 can be connected to each other, and each prefabricated exterior wall frame 1 is connected together by using the slurry, and the sides of the first slurry outlet hole 10 and the second slurry outlet hole 11 are provided with a second plug rod 7 connected to the prefabricated exterior wall frame 1; both sides of the second plug block 301 are provided with a third slurry outlet hole 14 and a fourth slurry outlet hole 15, and the third slurry outlet hole 14 and the fourth slurry outlet hole 15 are connected to the second grouting hole 6 through the flow channel 16, and the sides of the third slurry outlet hole 14 and the fourth slurry outlet hole 15 are provided with a second plug rod 7 matching the second plug rod 7 The second plugging rod 7 is inserted into the second plugging hole 701 to increase the stability of the horizontal connection of the prefabricated exterior wall outer frame 1. The second plugging block 301 is also connected to a fourth plugging rod 901. The side of the thermal insulation sound insulation board 12 is provided with a fourth plugging hole 9 matching the fourth plugging rod 901. The fourth plugging rod 901 is inserted into the fourth plugging hole 9 to realize the connection between the thermal insulation sound insulation board 12 and the fourth plugging rod 901, so that the thermal insulation sound insulation board 12 is suspended in the thermal insulation sound insulation board placement groove 13. The purpose of the suspended placement is to allow the thermal insulation sound insulation board 12 to be placed in the center of the thermal insulation sound insulation board placement groove 13, improve the performance of the thermal insulation sound insulation board, and also allow the gap between the thermal insulation sound insulation board 12 and the thermal insulation sound insulation board placement groove 13 to be filled with slurry of uniform thickness;

[0038] like Figure 5 As shown, the thermal insulation and sound insulation board 12 includes a first cement foam layer 1201, a first sound insulation layer 1202, a thermal insulation layer 1203, a second sound insulation layer 1204 and a second cement foam layer 1205. The first cement foam layer 1201 and the second cement foam layer 1205 serve to connect with the slurry, the first sound insulation layer 1202 and the second sound insulation layer 1204 serve to soundproof, and the thermal insulation layer 1203 serves to keep warm.

[0039] The thermal insulation layer 1203 is a polystyrene foam board, a first sound insulation layer 1202 is arranged on one side of the thermal insulation layer 1203, a second sound insulation layer 1204 is arranged on the other side of the thermal insulation layer 1203, a first cement foam layer 1201 is arranged on one side of the first sound insulation layer 1202, and a second cement foam layer 1205 is arranged on the side of the second sound insulation layer 1204. The first sound insulation layer 1202 and the second sound insulation layer 1204 are used to protect the thermal insulation layer 1203, and the first cement foam layer 1201 and the second cement foam layer 1205 are used to protect the first sound insulation layer 1202 and the second sound insulation layer 1204, so as to improve the service life of the thermal insulation and sound insulation board 12.

[0040] The first cement foam layer 1201, the first sound insulation layer 1202, the thermal insulation layer 1203, the second sound insulation layer 1204 and the second cement foam layer 1205 are stacked structures. The first cement foam layer 1201 and the second cement foam layer 1205 are both made of cement, slag powder, river sand, foaming agent and foam stabilizer. The first sound insulation layer 1202 is glass wool and the second sound insulation layer 1204 is polyester fiber wool.

[0041] like Figure 1-4 As shown, the first insertion rod 401, the second insertion rod 7, the third insertion rod 8 and the fourth insertion rod 901 are all steel bars.

[0042] The prefabricated outer wall frame 1 is integrated with the first plug rod 401 , the second plug rod 7 , the third plug rod 8 and the fourth plug rod 901 and is cast by concrete to improve stability.

[0043] like Figure 4 As shown, the flow channel 16 is provided with a plurality of through holes 17 which are connected to the heat-insulating and sound-insulating board placement grooves 13 .

[0044] In summary, the production method of the prefabricated exterior wall provided in the embodiment of the present invention has the following specific steps:

[0045] Step 1: Preparation process of prefabricated exterior wall outer frame 1: fix the first plug rod 401, the second plug rod 7, the third plug rod 8 and the fourth plug rod 901 on the inner keel, an inner mold is provided in the middle of the inner keel, the inner keel is made of steel bars, and the foam molds of the flow channel 16, the through hole 17, the second plug hole 701, the third plug hole 801, the first grouting hole 5, the second grouting hole 6, the first grouting hole 10, the second grouting hole 11, the third grouting hole 14 and the fourth grouting hole 15 are installed on both sides of the inner keel, and then the overall frame is wrapped with an outer mold, and then concrete is poured. After the concrete solidifies, the outer mold and the inner mold are taken out to obtain an untreated prefabricated part, and then the untreated prefabricated part is burned to remove the foam mold, thereby obtaining a prefabricated exterior wall;

[0046] Step 2: Preparation process of thermal insulation and sound insulation board 12:

[0047] Step 2.1: firstly, the heat-insulating layer 1203 is arranged in the mold, and then glass wool is arranged on the surface of the heat-insulating layer 1203 to form the first sound-insulating layer 1202, and then the first cement foaming layer 1201 is arranged on the surface of the first sound-insulating layer 1202, and the upper template is covered;

[0048] Step 2.2: Turn the mold over to make the upper mold contact the ground, and then set polyester fiber cotton on the other surface of the thermal insulation layer 1203 to form a second sound insulation layer 1204, and then set a second cement foam layer 1205 on the surface of the second sound insulation layer 1204, and cover the upper and lower molds;

[0049] Step 3: Place the thermal insulation and sound insulation board 12 into the thermal insulation and sound insulation board placement groove 13 in the prefabricated exterior wall frame 1.

[0050] A construction method for a prefabricated exterior wall, the specific steps are as follows:

[0051] Step 1: splice several prefabricated exterior walls together to form an integral prefabricated exterior wall;

[0052] Step 11: insert the first plug block 201 at the bottom of the first prefabricated exterior wall into the first slot 2 at the top of the second prefabricated exterior wall, insert the first plug rod 401 at the bottom of the first prefabricated exterior wall into the first plug hole 4 at the top of the thermal insulation and sound insulation board 12 inside the second prefabricated exterior wall, insert the third plug rod 8 at the top of the second prefabricated exterior wall into the third plug hole 801 at the bottom of the first prefabricated exterior wall, assemble other prefabricated exterior walls in this way, and complete the vertical assembly of the prefabricated exterior walls;

[0053] Step 12: insert the second plug rod 7 on the side of the second prefabricated exterior wall into the second plug hole 701 on the side of the third prefabricated exterior wall, insert the second plug block 301 on the side of the third prefabricated exterior wall into the second slot 3 of the second prefabricated exterior wall, and insert the fourth plug rod 901 fixed on the second plug block 301 into the fourth plug hole 9 on the side of the second prefabricated exterior wall. In this way, assemble other prefabricated exterior walls to complete the horizontal assembly of prefabricated exterior walls.

[0054] Step 2: Then use a high-pressure pump to inject the slurry through the first grouting hole 5 and the second grouting hole 6. The slurry will enter each prefabricated exterior wall frame 1 through the flow channel 16, and also enter the thermal insulation and sound insulation board placement groove 13 through the through hole 17 in the flow channel 16, so that the thermal insulation and sound insulation board 12 is fixed in the prefabricated exterior wall frame 1, and each prefabricated exterior wall frame 1 is tightly connected together, and each thermal insulation and sound insulation board 12 is tightly connected together, thereby improving the overall stability.

[0055] The above embodiments only express the implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A prefabricated exterior wall, comprising a prefabricated exterior wall frame (1) and a heat-insulating and sound-insulating board (12), characterized in that: The prefabricated exterior wall frame (1) is provided with an insulation and sound insulation board placement groove (13) for placing the insulation and sound insulation board (12); the top of the prefabricated exterior wall frame (1) is provided with a first slot (2); the bottom of the prefabricated exterior wall frame (1) is connected with a first plug-in block (201) matching the first slot (2); one of the two sides of the prefabricated exterior wall frame (1) adjacent to the top is provided with a second slot (3) on one side, and a second plug-in block (301) matching the second slot (3) is connected to the other side; A first grouting hole (5) and a second grouting hole (6) are provided on both sides of the notch of the first slot (2); a third plugging rod (8) connected to another adjacent prefabricated exterior wall frame (1) is provided on both sides of the first grouting hole (5) and the second grouting hole (6); third plugging holes (801) matching the third plugging rod (8) are provided on both sides of the first plugging block (201); a first plugging rod (401) is protruding from the first plugging block (201); and a first plugging hole (4) matching the first plugging rod (401) is provided on the top of the thermal insulation and sound insulation board (12); A first slurry outlet hole (10) and a second slurry outlet hole (11) are provided on both sides of the second slot (3); the first slurry outlet hole (10) and the second slurry outlet hole (11) are both connected to the first grouting hole (5) through a flow channel (16); and the sides of the first slurry outlet hole (10) and the second slurry outlet hole (11) are both provided with a second plug rod (7) connected to the prefabricated exterior wall frame (1); and a third slurry outlet hole (14) and a fourth slurry outlet hole ( 15), the third slurry outlet hole (14) and the fourth slurry outlet hole (15) are both connected to the second grouting hole (6) through the flow channel (16), the sides of the third slurry outlet hole (14) and the fourth slurry outlet hole (15) are provided with a second plug hole (701) matching the second plug rod (7), the second plug block (301) is also connected to a fourth plug rod (901), and the side of the thermal insulation and sound insulation board (12) is provided with a fourth plug hole (9) matching the fourth plug rod (901); The heat-insulating and sound-insulating board (12) comprises a first cement foaming layer (1201), a first sound-insulating layer (1202), a heat-insulating layer (1203), a second sound-insulating layer (1204) and a second cement foaming layer (1205).

2. The prefabricated exterior wall according to claim 1, characterized in that: The thermal insulation layer (1203) is a polystyrene foam board, a first sound insulation layer (1202) is arranged on one side of the thermal insulation layer (1203), a second sound insulation layer (1204) is arranged on the other side of the thermal insulation layer (1203), a first cement foam layer (1201) is arranged on one side of the first sound insulation layer (1202), and a second cement foam layer (1205) is arranged on the side of the second sound insulation layer (1204).

3. The prefabricated exterior wall according to claim 2, characterized in that: The first cement foam layer (1201), the first sound insulation layer (1202), the thermal insulation layer (1203), the second sound insulation layer (1204), and the second cement foam layer (1205) are a stacked structure; the first cement foam layer (1201) and the second cement foam layer (1205) are both made of cement, slag powder, river sand, a foaming agent, and a foam stabilizing agent; the first sound insulation layer (1202) is glass wool, and the second sound insulation layer (1204) is polyester fiber wool.

4. The prefabricated exterior wall according to claim 1, characterized in that: The first insertion rod (401), the second insertion rod (7), the third insertion rod (8) and the fourth insertion rod (901) are all steel bars.

5. The prefabricated exterior wall according to claim 1, characterized in that: The prefabricated exterior wall frame (1) is integrated with the first insertion rod (401), the second insertion rod (7), the third insertion rod (8) and the fourth insertion rod (901) and is formed by concrete casting.

6. The prefabricated exterior wall according to claim 1, characterized in that: The flow channel (16) is provided with a plurality of through holes (17) which are in communication with the heat-insulating and sound-isolating board placement grooves (13).

7. A method for preparing a prefabricated exterior wall according to any one of claims 1 to 6, characterized in that: The specific steps are as follows: Step 1: Preparation process of prefabricated exterior wall outer frame (1): fix the first plug rod (401), the second plug rod (7), the third plug rod (8) and the fourth plug rod (901) on the inner keel, and an inner mold is provided in the middle of the inner keel. The inner keel is made of steel bars. The foam molds of the flow channel (16), the through hole (17), the second plug hole (701), the third plug hole (801), the first grouting hole (5), the second grouting hole (6), the first grouting hole (10), the second grouting hole (11), the third grouting hole (14) and the fourth grouting hole (15) are installed on both sides of the inner keel, and then the overall frame is wrapped with an outer mold, and then concrete is poured. After the concrete is solidified, the outer mold and the inner mold are taken out to obtain an untreated prefabricated part, and then the untreated prefabricated part is burned to remove the foam mold, thereby obtaining a prefabricated exterior wall; Step 2: Preparation process of thermal insulation and sound insulation board (12): Step 2.1: firstly, a heat-insulating layer (1203) is arranged in a mold, and then glass wool is arranged on the surface of the heat-insulating layer (1203) to form a first sound-insulating layer (1202), and then a first cement foaming layer (1201) is arranged on the surface of the first sound-insulating layer (1202), and then an upper template is covered; Step 2.2: Turn the mold over so that the upper mold is in contact with the ground, and then set polyester fiber cotton on the other surface of the thermal insulation layer (1203) to form a second sound insulation layer (1204), and then set a second cement foam layer (1205) on the surface of the second sound insulation layer (1204), and cover the upper and lower molds; Step 3: Place the thermal insulation and sound insulation board (12) into the thermal insulation and sound insulation board placement groove (13) in the prefabricated exterior wall frame (1).

8. A construction method for preparing a prefabricated exterior wall as claimed in any one of claims 1 to 6, characterized in that: The specific steps are as follows: Step 1: splice several prefabricated exterior walls together to form an integral prefabricated exterior wall; Step 11: insert the first plug block (201) at the bottom of the first prefabricated exterior wall into the first slot (2) at the top of the second prefabricated exterior wall, insert the first plug rod (401) at the bottom of the first prefabricated exterior wall into the first plug hole (4) at the top of the thermal insulation and sound insulation board (12) inside the second prefabricated exterior wall, insert the third plug rod (8) at the top of the second prefabricated exterior wall into the third plug hole (801) at the bottom of the first prefabricated exterior wall, assemble other prefabricated exterior walls in this manner, and complete the vertical assembly of the prefabricated exterior walls; Step 12: insert the second plug rod (7) on the side of the second prefabricated exterior wall into the second plug hole (701) on the side of the third prefabricated exterior wall, insert the second plug block (301) on the side of the third prefabricated exterior wall into the second slot (3) on the second prefabricated exterior wall, and simultaneously insert the fourth plug rod (901) fixed on the second plug block (301) into the fourth plug hole (9) on the side of the second prefabricated exterior wall. In this way, assemble other prefabricated exterior walls to complete the horizontal assembly of prefabricated exterior walls. Step 2: Then, a high-pressure pump is used to inject the slurry through the first grouting hole (5) and the second grouting hole (6). The slurry will enter each prefabricated exterior wall frame (1) through the flow channel (16), and also enter the thermal insulation and sound insulation board placement groove (13) through the through hole (17) in the flow channel (16), so that the thermal insulation and sound insulation board (12) is fixed in the prefabricated exterior wall frame (1).

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