A device for repairing cracks in an external wall

Abstract

The utility model discloses a kind of outer wall crack glue injection repairing devices, comprising: syringe, repair agent assembly and injection mechanism, the syringe is by injection cylinder, end cap is screwed in the lower end of injection cylinder, and injection head is assembled in the lower end of end cap, the repair agent assembly includes bag body, filling agent is filled in bag body inside, fixedly installed in the lower end of bag body with the outer thread of discharge pipe, and plug cap is screwed in the surface of discharge pipe, the repair agent assembly includes bag body.Compared with prior art, the beneficial effects of the utility model are: the device can be opened multiple glue injection holes at wall crack, multiple syringes and injection head can be installed on wall surface at one time, then gas pipe on injection mechanism is connected with air inlet pipe on injection cylinder, external air pump is used to provide power to drive piston to move, so that multiple glue injection holes can be injected at one time, greatly improve efficiency.

Description

Technical Field

[0001] This utility model relates to the field of exterior wall repair technology, and in particular to an adhesive injection repair device for exterior wall cracks. Background Technology

[0002] For structural cracks in building exterior walls that develop over long-term service, adhesive injection filling technology is a key repair process for restoring the integrity, continuity, and durability of the components. The current mainstream technical solution, as shown in patent CN209816688U, has a core structure comprising an injection cylinder, a piston assembly, and a pneumatic drive system. The piston, connected by a first elastic element, forms a pressure chamber with the injection cylinder. This chamber is supported by a pneumatic system consisting of an air inlet pipe, hose, and air pump, along with a control mechanism and handle to extrude the adhesive. While this design solves the labor-intensive problem of traditional manual adhesive injection, it still suffers from significant efficiency bottlenecks. Manual, crack-by-crack injection is required, which can easily hinder construction progress in large-scale facade repair projects. To address these shortcomings, we propose an adhesive injection repair device for exterior wall cracks. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for repairing external wall cracks by injecting adhesive.

[0004] To address the problems existing in the prior art, this utility model adopts the following technical solution: a device for injecting adhesive to repair external wall cracks, comprising:

[0005] The syringe comprises a syringe barrel, an end cap threaded to the lower end of the syringe barrel, and an injection head assembled at the lower end of the end cap;

[0006] The repair agent assembly includes a cylindrical bag, a filler filled inside the cylindrical bag, a discharge pipe with external threads fixedly installed at the lower end of the cylindrical bag, and a plug cap threaded to the surface of the discharge pipe.

[0007] The injection head includes a tapered insertion tube with external and internal threads respectively opened on the outer and inner surfaces of the tapered insertion tube, and a discharge tube fixedly installed at the lower end of the end cap. The inner wall of the discharge tube has a threaded hole.

[0008] The injection mechanism includes an air supply pipe, a pressure regulating valve integrated at one end of the air supply pipe, a connecting pipe fixedly installed at the other end of the pressure regulating valve, and a piston disposed on the inner wall of the injection cylinder, with a polytetrafluoroethylene sealing ring on the outer periphery of the piston.

[0009] Preferably, an air inlet pipe is fixedly installed at the upper end of the syringe, and one end of the air delivery pipe is connected to the air inlet pipe via a quick connector.

[0010] Preferably, a support ring is fixedly installed on the surface of the tapered insertion tube.

[0011] Preferably, the outer surface of the tapered insertion tube is provided with a circular break groove.

[0012] Preferably, the other end of the connecting pipe is connected to an external air pump.

[0013] Preferably, the external thread on the outer surface of the tapered insertion tube is threadedly engaged with the threaded hole on the inner wall of the discharge tube.

[0014] Preferably, the external thread on the outer surface of the discharge pipe is threaded with the internal thread on the inner wall of the tapered insertion pipe.

[0015] Preferably, the cylindrical bag body is made of polyethylene / aluminum foil composite material with a thickness of 0.2mm±0.02mm.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This device can open multiple injection holes in the wall cracks, and can install multiple syringes and injection heads on the wall at one time. Then, the air supply pipe on the injection mechanism is connected to the air inlet pipe on the injection cylinder. The external air pump provides power to drive the piston to move, so that multiple injection holes can be injected at one time, which greatly improves efficiency.

[0018] 2. After the glue is injected and the filler has solidified, the syringe can be unscrewed from the injection head for reuse. Then, tap the injection head, and it will break at the circular break groove. This avoids the backflow of glue after injection and allows the injection component to be installed in the syringe barrel again, which facilitates the operation. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an undue limitation. In the drawings:

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 This is a frontal cross-sectional view of the syringe of this utility model;

[0022] Figure 3 This is a frontal cross-sectional view of the injection cylinder of this utility model;

[0023] Figure 4 This is a frontal cross-sectional view of the injection head of this utility model;

[0024] Figure 5 This is a front sectional view of the end cap of this utility model;

[0025] Figure 6for Figure 2 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 This is a three-dimensional schematic diagram of the repair agent component of this utility model.

[0027] The numbers in the diagram are: 10 syringe, 11 end cap, 12 air inlet tube;

[0028] 20 cylindrical bag body, 21 discharge pipe, 22 blocking cap;

[0029] 30. Tapered insert tube; 31. External thread; 32. Internal thread; 33. Discharge tube; 34. Support ring; 35. Circular break groove.

[0030] 40 Gas supply pipe, 41 Pressure regulating valve, 42 Connecting pipe, 43 Piston. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0032] Please see Figure 1-7 This utility model provides a technical solution: an external wall crack injection repair device, comprising: a syringe, a repair agent assembly, and an injection mechanism.

[0033] Please refer to the following carefully. Figure 2-3 The syringe consists of a syringe barrel 10, an end cap 11 threaded to the lower end of the syringe barrel 10, and an injection head mounted on the lower end of the end cap 11. The syringe barrel 10 is made of transparent polycarbonate.

[0034] Please refer to the following carefully. Figure 2-6 The injection head includes a tapered insertion tube 30, with external threads 31 and internal threads 32 respectively opened on the outer and inner surfaces of the tapered insertion tube 30, and a discharge tube 33 fixedly installed at the lower end of the end cap 11. The inner wall of the discharge tube 33 has a threaded hole. A support ring 34 is fixedly installed on the surface of the tapered insertion tube 30. The external thread 31 on the outer surface of the tapered insertion tube 30 is threadedly engaged with the threaded hole on the inner wall of the discharge tube 33.

[0035] Drill 8mm diameter injection holes at 150-200mm intervals in the wall cracks. After removing debris from the holes, screw the tapered insert tube 30 into the threaded hole of the discharge tube 33 through the external thread 31 to complete the injection head assembly. Then, insert the tapered insert tube 30 into the injection hole. After the support ring 34 contacts the wall, use epoxy quick-drying agent to temporarily fix the crack surface and the support ring 34 to form a sealed injection channel.

[0036] Please refer to the following carefully. Figure 1 , Figure 2 as well as Figure 6-7The repair agent assembly includes a cylindrical bag 20, a filler inside the cylindrical bag 20, a discharge pipe 21 with external threads fixedly installed at the lower end of the cylindrical bag 20, and a plug 22 threaded to the surface of the discharge pipe 21. The cylindrical bag 20 is made of polyethylene / aluminum foil composite material with a thickness of 0.2mm±0.02mm. The external threads on the outer surface of the discharge pipe 21 are threadedly engaged with the internal threads 32 on the inner wall of the tapered insertion tube 30. The filler is existing technology and different fillers can be filled according to the construction area. The plug 22 is removed to expose the discharge pipe 21, which is screwed into the internal thread 32 end on the tapered insertion tube 30. Then, the injection cylinder 10 and the end cap 11 are connected by threads to form a pressure chamber.

[0037] The injection mechanism includes an air supply pipe 40, a pressure regulating valve 41 integrated at one end of the air supply pipe 40, a connecting pipe 42 fixedly installed at the other end of the pressure regulating valve 41, and a piston 43 disposed on the inner wall of the injection cylinder 10. The piston 43 is provided with a polytetrafluoroethylene (PTFE) sealing ring on its outer periphery. The other end of the connecting pipe 42 is connected to an external air pump. The PTFE sealing ring of the piston 43 ensures no leakage at a pressure of 0.15 MPa. The pressure regulating valve 41 has an adjustment range of 0-0.6 MPa and an accuracy of ±0.02 MPa. An air inlet pipe 12 is fixedly installed at the upper end of the injection cylinder 10. One end of the air supply pipe 40 is connected to the air inlet pipe 12 via a quick connector. The air supply pipe 40 and the air inlet pipe 12 are connected via the quick connector. The connecting pipe 42 is connected to an external air pump system with a pressure of 0.4-0.8 MPa.

[0038] After the air pump is started, the pressure regulating valve 41 stabilizes the air pressure at 0.5MPa, pushing the piston 43 to move towards the cylindrical bag 20. The polytetrafluoroethylene sealing ring ensures that there is no gas leakage under pressure. After the cylindrical bag 20 is squeezed, the filler is injected into the crack through the discharge pipe 21 and the conical insertion pipe 30. The amount of glue injected at a single station can be precisely controlled by the duration of air pressure. The overflow structure built into the pressure regulating valve 41 can automatically release pressure when there is overpressure, protecting the cylindrical bag 20 (this technology is existing technology, so it will not be described in detail).

[0039] The device can open multiple injection holes in the wall cracks, and can install multiple injection cylinders 10 and injection heads on the wall at one time. Then, the air supply pipe 40 on the injection mechanism is connected to the air inlet pipe 12 on the injection cylinder 10. The piston 43 is driven by the external air pump to move, so that multiple injection holes can be injected at one time, which greatly improves efficiency.

[0040] The outer surface of the conical insert tube 30 is provided with a circular break groove 35, which is 0.3 mm deep. This groove is used to break the exposed conical insert tube 30 after the glue is injected. After the glue is injected and the filler has initially set, the injection cylinder 10 is rotated counterclockwise to disassemble and recycle the tube. Then, the conical insert tube 30 is struck to break at the circular break groove 35, which prevents the glue from flowing back and forms a permanent seal. The same injection cylinder 10 can be reused with a new repair agent component.

[0041] Specifically, the working principle and operation method of this utility model are as follows:

[0042] Crack treatment: Drill injection holes at 150-200mm intervals along the crack, with a hole diameter of 8mm and a depth that penetrates the crack layer. Use compressed air or a brush to remove debris from the holes to ensure that the injection channel is unobstructed.

[0043] Injection head installation: Screw the external thread 31 on the tapered insert tube 30 into the internal thread hole on the discharge tube 33 until it is completely tightened to form an injection head assembly. Insert the assembled injection head into the injection hole so that the support ring 34 fits against the wall. Use epoxy quick-drying agent to temporarily fix the support ring 34 to the surface of the crack to form a sealed channel.

[0044] Repair agent assembly connection: Remove the plug cap 22 on the discharge pipe 21 of the cylindrical bag 20, screw the external thread of the plug on the discharge pipe 21 into the internal thread 32 end of the tapered insertion tube 30, ensuring that the threads are fully engaged, and then connect the injection cylinder 10 and the end cap 11 by thread to form a closed pressure chamber.

[0045] Injection mechanism connection: Connect the gas supply pipe 40 to the air inlet pipe 12 on the injection cylinder 10 through a quick connector, connect the other end of the connecting pipe 12 to the air pump system, and then adjust the pressure regulating valve 41.

[0046] Filler injection: Air pressure pushes piston 43 to move towards cylindrical bag 20, squeezing filler into the crack through discharge pipe 21 and conical insertion pipe 30. The amount of glue injected at a single station is controlled by the duration of air pressure. When the pressure is over-pressurized, pressure regulating valve 41 automatically releases pressure to protect cylindrical bag 20. If batch injection is required, multiple injection cylinders can be connected in parallel to the same air pump system, and synchronous injection can be achieved through the branch of air supply pipe 40.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art based on the technical solution and concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An external wall crack glue injection repair device, characterized in that, include: The syringe comprises a syringe barrel (10), an end cap (11) threaded to the lower end of the syringe barrel (10), and an injection head assembled at the lower end of the end cap (11). The repair agent assembly includes a cylindrical bag (20), a filler filled inside the cylindrical bag (20), a discharge pipe (21) with external threads fixedly installed at the lower end of the cylindrical bag (20), and a plug (22) threaded to the surface of the discharge pipe (21). The injection head includes a tapered insertion tube (30), external threads (31) and internal threads (32) respectively opened on the outer and inner surfaces of the tapered insertion tube (30), and a discharge tube (33) fixedly installed at the lower end of the end cap (11). The inner wall of the discharge tube (33) is provided with a threaded hole. The injection mechanism includes an air supply pipe (40), a pressure regulating valve (41) integrated at one end of the air supply pipe (40), a connecting pipe (42) fixedly installed at the other end of the pressure regulating valve (41), and a piston (43) disposed on the inner wall of the injection cylinder (10), with a polytetrafluoroethylene sealing ring on the outer periphery of the piston (43).

2. The device for repairing the cracks of the outer wall according to claim 1, characterized in that: An air inlet pipe (12) is fixedly installed at the upper end of the syringe (10), and one end of the air delivery pipe (40) is connected to the air inlet pipe (12) through a quick connector.

3. The device for repairing cracks in external walls according to claim 1, characterized in that: A support ring (34) is fixedly installed on the surface of the tapered insertion tube (30).

4. The device for repairing cracks in external walls by injecting glue according to claim 1, characterized in that: A circular break groove (35) is provided on the outer surface of the tapered insertion tube (30).

5. The device for repairing cracks in external walls by injecting glue according to claim 1, characterized in that: The other end of the connecting pipe (42) is connected to an external air pump.

6. The device for repairing external wall cracks by injection according to claim 1, characterized in that: The external thread (31) on the outer surface of the tapered insertion tube (30) is threadedly engaged with the threaded hole on the inner wall of the discharge tube (33).

7. The device for repairing cracks in external walls by injecting glue according to claim 1, characterized in that: The external thread on the outer surface of the discharge pipe (21) is threadedly engaged with the internal thread (32) on the inner wall of the tapered insertion pipe (30).

8. The device for repairing cracks in external walls by injecting glue according to claim 1, characterized in that: The cylindrical bag (20) is made of polyethylene / aluminum foil composite material with a thickness of 0.2mm ± 0.02mm.

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