Prefabricated building grouting device

Abstract

This invention relates to the field of building construction technology, specifically to a grouting device for prefabricated assembled buildings. The device includes a grouting cylinder, with a piston rod slidably inserted at one end and a grout outlet pipe inserted through the other end. A leak-sealing device is located at the top of the grouting cylinder, and an adjusting device is located on the side of the leak-sealing device near the piston rod. During grouting, only one operator needs to hold the grouting cylinder and inject concrete slurry into the grouting hole located at the bottom through the first sealing pipe. When the concrete slurry flows out through the second sealing pipe, grouting is stopped and the grouting cylinder is removed. At this time, the first sealing plate, under the action of a first spring, seals the first sealing pipe, while the second sealing plate, under the action of a magnetic pull rod, cooperates with a third sealing plate to close the second sealing pipe. This effectively prevents concrete slurry from flowing out of the top grouting hole, ensuring sufficient concrete slurry in the grouting hole.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a grouting device for prefabricated assembled buildings. Background Technology

[0002] Prefabricated construction refers to transferring a large amount of on-site work from traditional construction methods to factories. Building components and accessories, such as floor slabs, wall panels, stairs, and balconies, are prefabricated in factories, transported to the construction site, and assembled on-site using reliable connection methods. Therefore, these building components or accessories have connection holes at their bottoms during production, and two rows of grouting holes are also made on the sides of the components, with the upper and lower grouting holes interconnected. During assembly, the connection holes at the bottom of the component are first inserted into the reinforcing bars on the building floor slab. Then, a worker uses a grouting cylinder to inject concrete slurry into the grouting holes located at the bottom row. When the injected concrete slurry flows out from the grouting hole located at the top, the grouting is stopped. At this time, another worker uses a wooden stick or plug to seal the grouting holes at the top and bottom simultaneously. After the concrete slurry dries, the component will be stably connected to the building floor slab.

[0003] However, due to the lack of an automatic plugging device in the existing grouting cylinder, two people are required to operate the entire grouting operation. In addition, during the process of removing the grouting cylinder from the grouting hole, some concrete slurry will flow out from the grouting hole located at the bottom. Therefore, if the other worker responsible for plugging the hole operates slowly, a lot of concrete slurry will flow out of the grouting hole, which will affect the connection stability between the component and the floor slab.

[0004] Therefore, it is necessary to invent a grouting device for prefabricated assembled buildings to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a prefabricated assembled building grouting device to solve the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated assembled building grouting device, comprising a grouting cylinder, a piston rod slidably inserted into one end of the grouting cylinder, and a grout outlet pipe inserted through the other end of the grouting cylinder. A leak-sealing device is provided at the top of the grouting cylinder, and an adjusting device is provided on the side of the leak-sealing device near the piston rod. Two protrusions are symmetrically and fixedly connected to the free end of the grout outlet pipe. A first sealing pipe is slidably sleeved on the grout outlet pipe, and a sealing device is sleeved on the first sealing pipe. An annular baffle is fixedly connected to the end of the first sealing pipe near the grouting cylinder, and a first sealing plate is provided at the end of the first sealing pipe away from the grouting cylinder. A plurality of first limiting rods are fixedly connected to the side of the first sealing plate near the first sealing pipe. The first limiting rods are slidably inserted into the first sealing pipe, and a first spring is sleeved on the portion of the first limiting rod located inside the first sealing pipe.

[0007] The leak-sealing device includes a semi-cylindrical support block. A semi-annular baffle is fixedly connected to one end of the support block near the adjustment device. A second sealing tube is slidably sleeved on the support block. A sealing ring is sleeved on the second sealing tube. A second sealing plate is provided at the end of the second sealing tube away from the semi-annular baffle. The second sealing plate has a notch design near the top. Multiple second limiting rods are fixedly connected to the side of the second sealing plate near the second sealing tube. The second limiting rods are slidably inserted into the second sealing tube. A third sealing plate matching the notch of the second sealing plate is fixedly connected to the inner wall of the top of the second sealing tube. A sealing plug matching the shape formed by the inner diameter of the second sealing tube and the third sealing plate is fixedly connected to the side of the second sealing plate near the second sealing tube. A magnetic ring is fixedly connected to the sealing plug. A magnetic pull rod is inserted into the magnetic ring. The magnetic pull rod is fixedly connected perpendicularly to the support block.

[0008] During grouting, concrete slurry is injected into the grouting hole located at the bottom through the first sealing pipe. When the concrete slurry flows out through the second sealing pipe, grouting is stopped and the grouting cylinder is removed. At this time, the first sealing plate closes the first sealing pipe under the action of the first spring, while the second sealing plate, under the action of the magnetic pull rod, cooperates with the third sealing plate to close the second sealing pipe. This can prevent the concrete slurry from flowing out of the grouting hole at the top in time, ensuring sufficient concrete slurry in the grouting hole and ensuring the firm connection between the component and the building floor slab.

[0009] Furthermore, the adjusting device includes an adjusting rod, which is vertically fixedly connected to the top of the grouting cylinder. A movable block is threaded onto the adjusting rod, and a connecting plate is fixedly connected between the movable block and the support block. A sliding rod is slidably inserted through the connecting plate, and the bottom end of the sliding rod is fixedly connected to the top of the grouting cylinder.

[0010] Furthermore, the sealing device includes a sleeve, which is fixedly connected to an annular baffle. A movable ring is provided between the sleeve and the first sealing tube. An annular receiving groove is formed on the outer diameter surface of the movable ring. An annular rubber ring is fixedly connected to the opening of the receiving groove. Multiple arc-shaped support plates are fixedly connected to the inner side of the rubber ring. Multiple telescopic rods are fixedly connected between the arc-shaped support plates and the receiving groove, and a second spring is sleeved on the telescopic rod. Multiple arc-shaped pressure plates are hinged to the opening of the receiving groove away from the first sealing tube. Multiple third limiting rods are fixedly connected to the side of the movable ring near the annular baffle, and the third limiting rods slide through and are inserted into the annular baffle. The free ends of the multiple third limiting rods are fixedly connected to the same annular pull plate.

[0011] Furthermore, a semi-annular pressure ring is provided between the semi-annular baffle and the second sealing tube. The semi-annular pressure ring is slidably sleeved on the support block. A plurality of T-shaped rods are fixedly connected to the side of the semi-annular pressure ring near the second sealing tube, and the T-shaped rods are slidably inserted through the semi-annular baffle. A third spring is sleeved on the part of the T-shaped rod located between the semi-annular baffle and the semi-annular pressure ring.

[0012] Furthermore, the inner diameter of the annular pull plate is smaller than the inner diameter of the first sealing pipe, and the inner diameter of the annular pull plate matches the outer diameter of the slurry outlet pipe.

[0013] Furthermore, the sealing ring is made of rubber material, and the outer diameter of the sealing ring is the same as the maximum outer diameter of the rubber ring.

[0014] Furthermore, the movable ring has multiple spherical protrusions fixedly connected to the side near the first sealing plate, and the multiple spherical protrusions are distributed in a ring.

[0015] Furthermore, the multiple arc-shaped support plates and multiple arc-shaped pressure plates correspond one-to-one, and both have the same curvature.

[0016] The technical effects and advantages of this invention are as follows:

[0017] 1. During grouting, this invention requires only one operator to hold the grouting cylinder and inject concrete slurry into the grouting hole located at the bottom through the first sealing pipe. When the concrete slurry flows out through the second sealing pipe, grouting is stopped and the grouting cylinder is removed. At this time, the first sealing plate closes the first sealing pipe under the action of the first spring, and the second sealing plate, under the action of the magnetic pull rod, cooperates with the third sealing plate to close the second sealing pipe. This can prevent the concrete slurry from flowing out of the grouting hole at the top in time, ensuring sufficient concrete slurry in the grouting hole and ensuring the firm connection between the component and the building floor slab.

[0018] 2. The present invention is equipped with an adjustment device. Since the distance between the grouting holes on different components is different, before injecting concrete slurry into the opposing grouting holes, the adjustment screw can be turned to make the movable block drive the sealing device to slide up and down along the sliding rod direction. This makes the distance between the sealing device and the first sealing pipe and the distance between the upper and lower grouting holes the same, which makes it easier for the grouting cylinder to complete the grouting operation on different components and improves the versatility of the present invention.

[0019] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 In this invention Figure 1 Partial structural diagram;

[0023] Figure 3 In this invention Figure 2 Enlarged view of part A;

[0024] Figure 4 This is a schematic diagram of the first three-dimensional structure of the second sealing tube in this invention;

[0025] Figure 5 This is a schematic diagram of the second three-dimensional structure of the second sealing tube in this invention;

[0026] Figure 6 This is a three-dimensional structural schematic diagram of the first sealing tube in this invention;

[0027] Figure 7 This is a schematic diagram of the second three-dimensional structure of the first sealing tube in this invention;

[0028] Figure 8 In this invention Figure 7 Front sectional view;

[0029] Figure 9 In this invention Figure 8 Enlarged view of part B;

[0030] Figure 10 This is a partial three-dimensional structural diagram of the movable ring in this invention.

[0031] In the diagram: 1. Grouting cylinder; 2. Piston rod; 3. Grout outlet pipe; 4. Leak sealing device; 40. Support block; 41. Semi-annular baffle; 42. Second sealing pipe; 43. Sealing ring; 44. Second sealing plate; 45. Second limiting rod; 46. Third sealing plate; 47. Sealing plug; 48. Magnetic ring; 49. Magnetic pull rod; 5. Adjusting device; 51. Adjusting rod; 52. Movable block; 53. Sliding rod; 6. Protrusion; 7. First sealing pipe; 8. Sealing device; 81. Sleeve; 82. Movable ring; 83. Rubber ring; 84. Arc-shaped support plate; 85. Telescopic rod; 86. Second spring; 87. Arc-shaped pressure plate; 88. Third limiting rod; 89. Annular pull plate; 9. First annular baffle; 10. First sealing plate; 11. First limiting rod; 15. First spring; 12. Semi-annular pressure ring; 13. T-shaped rod; 14. Third spring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] This invention provides, for example Figure 1-10 The prefabricated prefabricated building grouting device shown includes a grouting cylinder 1, a piston rod 2 slidably inserted into one end of the grouting cylinder 1, and a grout outlet pipe 3 inserted through the other end of the grouting cylinder 1. A leak-sealing device 4 is provided at the top of the grouting cylinder 1, and an adjusting device 5 is provided on the side of the leak-sealing device 4 near the piston rod 2. Two protrusions 6 are symmetrically fixedly connected to the free end of the grout outlet pipe 3. A first sealing pipe 7 is slidably sleeved on the grout outlet pipe 3, and a sealing device 8 is sleeved on the first sealing pipe 7. An annular baffle 9 is fixedly connected to the end of the first sealing pipe 7 near the grouting cylinder 1, and a first sealing plate 10 is provided at the end of the first sealing pipe 7 away from the grouting cylinder 1. A plurality of first limiting rods 11 are fixedly connected to the side of the first sealing plate 10 near the first sealing pipe 7. The first limiting rods 11 are slidably inserted into the first sealing pipe 7, and a first spring 15 is sleeved on the part of the first limiting rod 11 located inside the first sealing pipe 7.

[0034] During the grouting operation, the distance between the plugging device 4 and the grout outlet pipe 3 is first adjusted by the adjusting device 5, so that the grouting cylinder 1 can perform grouting operation on the grouting holes of different components.

[0035] Next, the first sealing tube 7 is fitted onto the grout outlet pipe 3. Then, the first sealing tube 7 and the leak-sealing device 4 are inserted into the two grouting holes located at the bottom and top, respectively. When the first sealing tube 7 is fully inserted into the grouting hole, the grouting cylinder 1 is pushed further. At this time, the sealing device 8 gradually seals the gap between the first sealing tube 7 and the grouting hole under the pressure of the grouting cylinder 1. During this process, the two protrusions 6 on the grout outlet pipe 3 gradually push the first sealing plate 10 away from the first sealing tube 7, while the first spring 15 is gradually compressed. When the first grout outlet pipe... When the first sealing tube 7 is fully inserted, the opening of the first sealing tube 7 is fully opened, and the sealing device 4 is also locked with the grouting hole at the top and kept open. This pushes the piston rod 2, allowing the concrete slurry in the grouting cylinder 1 to enter the grouting hole through the first sealing tube 7. When the concrete slurry flows out through the sealing device 4, the grouting is stopped and the grouting cylinder 1 is pulled out. At this time, the first sealing plate 10 closes the first sealing tube 7 under the action of the first spring 15, and the sealing device 4 also closes automatically. Thus, the grouting operation is completed.

[0036] Compared to traditional grouting devices, this invention requires only one person to complete the grouting operation. At the same time, this invention can also close both the upper and lower grouting holes simultaneously after grouting is completed, thereby preventing concrete slurry from flowing out of the top grouting hole in a timely manner, ensuring sufficient concrete slurry in the grouting hole, and ensuring the firm connection between the component and the building floor slab.

[0037] like Figure 1-5 As shown, the leak-sealing device 4 includes a semi-cylindrical support block 40. A semi-annular baffle 41 is fixedly connected to one end of the support block 40 near the adjusting device 5. A second sealing tube 42 is slidably sleeved on the support block 40, and a sealing ring 43 is sleeved on the second sealing tube 42. A second sealing plate 44 is provided at the end of the second sealing tube 42 away from the semi-annular baffle 41, and the second sealing plate 44 has a notch design near the top. A plurality of second limiting rods 45 are fixedly connected to the side of the second sealing plate 44 near the second sealing tube 42, and the second limiting rods 45 are slidably inserted into the second sealing tube 42. 2. On the top inner wall of the second sealing tube 42, a third sealing plate 46 that matches the notch of the second sealing plate 44 is fixedly connected. On the side of the second sealing plate 44 near the second sealing tube 42, a sealing plug 47 that matches the shape formed by the inner diameter of the second sealing tube 42 and the third sealing plate 46 is fixedly connected. A magnetic ring 48 is fixedly connected to the upper part of the sealing plug 47. A magnetic pull rod 49 is inserted into the magnetic ring 48, and the magnetic pull rod 49 is vertically fixedly connected to the support block 40. The sealing ring 43 is made of rubber material, and the outer diameter of the sealing ring 43 is the same as the maximum outer diameter of the rubber ring 83.

[0038] Before grouting, the first sealing tube 7 and the second sealing tube 42 are respectively fitted onto the grout outlet pipe 3 and the support block 40. Then, the first sealing tube 7 and the second sealing tube 42 are respectively inserted into the two grouting holes located at the bottom and top. When the first sealing tube 7 and the second sealing tube 42 are fully inserted into the grouting holes, the first sealing tube 7 and the second sealing tube 42 are respectively clamped to the inner wall of the grouting hole under the action of the sealing device 8 and the sealing ring 43. Furthermore, the first sealing plate 10 and the second sealing plate 44 are respectively engaged with the grout outlet pipe 3 and the magnetic pull rod 49. The first sealing tube 7 and the second sealing tube 42 remain separated. When the concrete slurry is injected into the bottom grouting hole, the air in the grouting hole is discharged through the top grouting hole and the notch at the top of the second sealing plate 44. As the concrete slurry is continuously injected, the liquid level of the concrete slurry gradually rises. When the concrete slurry enters the top grouting hole, the liquid level of the concrete slurry will rise further due to the blocking effect of the second sealing plate 44, thereby ensuring that the grouting hole can be filled with concrete slurry as much as possible, and ensuring the firmness of the connection between the component and the building floor slab.

[0039] When the level of the concrete slurry reaches the height of the top notch of the second sealing plate 44, the concrete slurry flows out of the grouting hole through the second sealing pipe 42. At this time, grouting is immediately stopped and the grout outlet pipe 3 is pulled out of the grouting hole. During this process, the first sealing plate 10 closes the first sealing pipe 7 under the action of the first spring 15, while the second sealing plate 44, under the pulling force of the magnetic pull rod 49, cooperates with the third sealing plate 46 to close the second sealing pipe 42, thereby preventing the concrete slurry from flowing out of the grouting hole.

[0040] like Figure 1 and Figure 2 As shown, the adjusting device 5 includes an adjusting rod 51, which is vertically fixedly connected to the top of the grouting cylinder 1. A movable block 52 is threaded onto the adjusting rod 51. A connecting plate is fixedly connected between the movable block 52 and the support block 40. A sliding rod 53 is slidably inserted through the connecting plate. The bottom end of the sliding rod 53 is fixedly connected to the top of the grouting cylinder 1.

[0041] Since the distance between the grouting holes on different components is different, before injecting concrete slurry into the opposing grouting holes, the adjusting screw can be turned so that the movable block 52 drives the sealing device 4 to slide up and down along the slide rod 53. This makes the distance between the sealing device 4 and the first sealing pipe 7 the same as the distance between the upper and lower grouting holes, which makes it easier for the grouting cylinder 1 to complete the grouting operation on different components and improves the versatility of the invention.

[0042] like Figure 6-10As shown, the sealing device 8 includes a sleeve 81, which is fixedly connected to an annular baffle 9. A movable ring 82 is provided between the sleeve 81 and the first sealing tube 7. An annular receiving groove is formed on the outer diameter surface of the movable ring 82. An annular rubber ring 83 is fixedly connected to the opening of the receiving groove. Multiple arc-shaped support plates 84 are fixedly connected to the inner side of the rubber ring 83. Multiple telescopic rods 85 are fixedly connected between the arc-shaped support plates 84 and the receiving groove, and a second spring 86 is sleeved on each telescopic rod 85. Multiple arc-shaped pressure plates 87 are hinged to the receiving groove away from the opening of the first sealing tube 7. Multiple third limiting rods 88 are fixedly connected to the side of the movable ring 82 near the annular baffle 9, and the third limiting rods 88 are slidably inserted into the annular baffle 9. The free ends of the multiple third limiting rods 88 are fixedly connected to the same annular pull plate 89. The multiple arc-shaped support plates 84 and multiple arc-shaped pressure plates 87 correspond one-to-one, and their curvatures are the same. Multiple spherical protrusions are fixedly connected to the side of the movable ring 82 near the first sealing plate 10, and the multiple spherical protrusions are distributed in an annular pattern. The inner diameter of the annular pull plate 89 is smaller than the inner diameter of the first sealing pipe 7, and the inner diameter of the annular pull plate 89 matches the outer diameter of the slurry outlet pipe 3.

[0043] Before the first sealing tube 7 is inserted into the grouting hole, the movable ring 82 is located inside the sleeve 81. During the insertion of the first sealing tube 7 into the grouting hole, after the first sealing tube 7 and the sleeve 81 are fully inserted into the grouting hole, the grouting cylinder 1 is pushed further. At this time, the annular pull plate 89, under the pressure of the grouting cylinder 1, pushes the movable ring 82 to continue moving into the grouting hole through the third limiting rod 88. During this process, the movable ring 82 gradually moves out of the sleeve 81. When the annular pull plate 89 contacts the annular baffle 9, the movable ring 82 is completely moved out of the sleeve 81. At this time, the telescopic rod 85 is in the second spring. The spring 86 extends under the action of the arc-shaped support plate 84, thereby pushing the arc-shaped pressure plate 87 to move outward from the receiving groove. At this time, the arc-shaped pressure plate 87 deflects away from the movable ring 82 under the push of the rubber ring 83. The rubber ring 83 is supported by multiple arc-shaped support plates 84 and fits against the inner wall of the grouting hole, thereby sealing the gap between the first sealing tube 7 and the grouting hole and preventing the concrete slurry in the grouting hole from leaking out. At the same time, the pressure generated by the second spring 86 on the arc-shaped support plate 84 can also make the rubber ring 83 tightly stuck in the grouting hole, thereby preventing the first sealing tube 7 from falling out of the grouting hole.

[0044] After the concrete slurry in the grouting hole dries for a period of time, insert a finger or hook into the inside of the annular pull plate 89 and pull the annular pull plate 89. At this time, the movable ring 82 gradually enters the sleeve 81 under the pull of the third limit rod 88. During this process, when the arc-shaped pressure plate 87 contacts the opening of the sleeve 81, the arc-shaped pressure plate 87 gradually deflects into the receiving groove under the pressure of the sleeve 81. The arc-shaped support plate 84 compresses the telescopic rod 85 under the pressure of the arc-shaped pressure plate 87 and pulls the rubber ring 83 to retract into the receiving groove. After the rubber ring 83 is completely retracted into the receiving groove, the movable ring 82 can re-enter the sleeve 81 under the pull of the annular pull plate 89. At this time, since the rubber ring 83 no longer squeezes the inner wall of the grouting hole, it is easy to remove the first sealing tube 7 from the grouting hole.

[0045] Because the movable ring 82 has spherical protrusions, the adhesion force between the movable ring 82 and the concrete slurry when the concrete slurry solidifies can be reduced, thus facilitating the separation of the movable ring 82 from the concrete slurry.

[0046] like Figure 7-10 As shown, a semi-annular pressure ring 12 is provided between the semi-annular baffle 41 and the second sealing tube 42. The semi-annular pressure ring 12 is slidably sleeved on the support block 40. A plurality of T-shaped rods 13 are fixedly connected to the side of the semi-annular pressure ring 12 near the second sealing tube 42, and the T-shaped rods 13 are slidably inserted through the semi-annular baffle 41. A third spring 14 is sleeved on the part of the T-shaped rod 13 located between the semi-annular baffle 41 and the semi-annular pressure ring 12.

[0047] During the process of pulling the support block 40 out of the second sealing tube 42, as the magnetic pull rod 49 pulls the second sealing plate 44 closer to the third sealing plate 46, the second sealing plate 44 will exert a pulling force on the second sealing tube 42 outward from the grouting hole through the friction between the second limiting rod 45 and the second sealing tube 42. During this process, the semi-annular pressure ring 12 can press the second sealing tube 42 under the action of the third spring 14. When the second sealing plate 44 contacts the second sealing tube 42, as the support block 40 continues to be pulled out, the magnetic pull rod 49 gradually separates from the second sealing plate 44. At this time, the semi-annular pressure ring 12 can still press the second sealing tube 42, thereby preventing the second sealing tube 42 from falling out of the grouting hole and ensuring the sealing effect of the second sealing tube 42 on the grouting hole.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grouting device for prefabricated assembled buildings, comprising a grouting cylinder (1), characterized in that: A piston rod (2) is slidably inserted into one end of the grouting cylinder (1), and a grout outlet pipe (3) is inserted through the other end of the grouting cylinder (1). A leak-sealing device (4) is provided at the top of the grouting cylinder (1), and an adjusting device (5) is provided on the side of the leak-sealing device (4) near the piston rod (2). Two protrusions (6) are symmetrically fixedly connected to the free end of the grout outlet pipe (3). A first sealing pipe (7) is slidably sleeved on the grout outlet pipe (3), and a sealing device (8) is sleeved on the first sealing pipe (7). An annular baffle (9) is fixedly connected to one end of the sealing pipe (7) near the grouting cylinder (1). A first sealing plate (10) is provided at one end of the first sealing pipe (7) away from the grouting cylinder (1). A plurality of first limiting rods (11) are fixedly connected to one side of the first sealing plate (10) near the first sealing pipe (7). The first limiting rods (11) are slidably inserted into the first sealing pipe (7), and a first spring (15) is sleeved on the part of the first limiting rod (11) located inside the first sealing pipe (7). The leak-sealing device (4) includes a semi-cylindrical support block (40). A semi-annular baffle (41) is fixedly connected to one end of the support block (40) near the adjusting device (5). A second sealing tube (42) is slidably sleeved on the support block (40). A sealing ring (43) is sleeved on the second sealing tube (42). A second sealing plate (44) is provided at one end of the second sealing tube (42) away from the semi-annular baffle (41). The second sealing plate (44) has a notch design near the top. Multiple second limiting rods (45) are fixedly connected to one side of the second sealing plate (44) near the second sealing tube (42). Two limiting rods (45) are slidably inserted into the second sealing tube (42). A third sealing plate (46) matching the notch of the second sealing plate (44) is fixedly connected to the inner wall of the top of the second sealing tube (42). A sealing plug (47) matching the shape formed by the inner diameter of the second sealing tube (42) and the third sealing plate (46) is fixedly connected to the side of the second sealing plate (44) near the second sealing tube (42). A magnetic ring (48) is fixedly connected to the upper part of the sealing plug (47). A magnetic pull rod (49) is inserted into the magnetic ring (48), and the magnetic pull rod (49) is vertically fixedly connected to the support block (40). During grouting, concrete slurry is injected into the grouting hole located at the bottom through the first sealing pipe. When the concrete slurry flows out through the second sealing pipe, grouting is stopped and the grouting cylinder is removed. At this time, the first sealing plate closes the first sealing pipe under the action of the first spring, while the second sealing plate, under the action of the magnetic pull rod, cooperates with the third sealing plate to close the second sealing pipe. This can prevent the concrete slurry from flowing out of the grouting hole at the top in time, ensuring sufficient concrete slurry in the grouting hole and ensuring the firm connection between the component and the building floor slab.

2. The prefabricated assembled building grouting device according to claim 1, characterized in that: The adjusting device (5) includes an adjusting rod (51), which is vertically fixed to the top of the grouting cylinder (1). A movable block (52) is threaded onto the adjusting rod (51). A connecting plate is fixedly connected between the movable block (52) and the support block (40). A sliding rod (53) is slidably inserted through the connecting plate. The bottom end of the sliding rod (53) is fixedly connected to the top of the grouting cylinder (1).

3. The prefabricated assembled building grouting device according to claim 1, characterized in that: The sealing device (8) includes a sleeve (81), which is fixedly connected to an annular baffle (9). A movable ring (82) is provided between the sleeve (81) and the first sealing tube (7). An annular receiving groove is formed on the outer diameter surface of the movable ring (82). An annular rubber ring (83) is fixedly connected to the opening of the receiving groove. Multiple arc-shaped support plates (84) are fixedly connected to the inner side of the rubber ring (83). The arc-shaped support plates (84) are fixedly connected to the receiving groove. Multiple telescopic rods (85) are provided, and a second spring (86) is sleeved on each telescopic rod (85). Multiple arc-shaped pressure plates (87) are hinged at the slot of the receiving groove away from the first sealing tube (7). Multiple third limiting rods (88) are fixedly connected to the side of the movable ring (82) near the annular baffle (9), and the third limiting rods (88) slide through and are inserted into the annular baffle (9). The free ends of the multiple third limiting rods (88) are fixedly connected to the same annular pull plate (89).

4. The prefabricated assembled building grouting device according to claim 1, characterized in that: A semi-annular pressure ring (12) is provided between the semi-annular baffle (41) and the second sealing tube (42). The semi-annular pressure ring (12) is slidably sleeved on the support block (40). A number of T-shaped rods (13) are fixedly connected to the side of the semi-annular pressure ring (12) near the second sealing tube (42), and the T-shaped rods (13) are slidably inserted into the semi-annular baffle (41). A third spring (14) is sleeved on the part of the T-shaped rod (13) located between the semi-annular baffle (41) and the semi-annular pressure ring (12).

5. The prefabricated assembled building grouting device according to claim 3, characterized in that: The inner diameter of the annular pull plate (89) is smaller than the inner diameter of the first sealing pipe (7), and the inner diameter of the annular pull plate (89) matches the outer diameter of the slurry outlet pipe (3).

6. The prefabricated assembled building grouting device according to claim 3, characterized in that: The sealing ring (43) is made of rubber material, and the outer diameter of the sealing ring (43) is the same as the maximum outer diameter of the rubber ring (83).

7. The prefabricated assembled building grouting device according to claim 3, characterized in that: The movable ring (82) has multiple spherical protrusions fixedly connected to the side of the first sealing plate (10), and the multiple spherical protrusions are distributed in a ring.

8. The prefabricated assembled building grouting device according to claim 3, characterized in that: Multiple arc-shaped support plates (84) and multiple arc-shaped pressure plates (87) correspond one-to-one, and both have the same curvature.

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