A device for repairing cracks in a wall using microorganisms

Abstract

The utility model relates to wall body crack repair technical field, specifically disclose the device of crack of wall body is repaired with microorganism, including the crack sealing grouting chamber for grouting, the telescopic support frame of one side of crack sealing grouting chamber installation, the one side of crack sealing grouting chamber is provided with infusion grouting pipeline, the infusion grouting pipeline is used for cooperating crack sealing grouting chamber to carry out grouting filling to crack, the crack sealing grouting chamber is the triangle structure, and one side is provided with double -deck grouting angle adjusting disc, one side of double -deck grouting angle adjusting disc with one side of telescopic support frame is adapted, the utility model discloses device need not to adopt the paste structure and wall body connection, avoid the scratch, peeling etc. damage caused to the wall surface because of the removal of paste material, especially applicable to the historical building or protective structure of higher requirement to the wall surface integrity.

Description

Technical Field

[0001] This utility model relates to the field of wall crack repair technology, specifically a device for repairing wall cracks using microorganisms. Background Technology

[0002] As buildings age, wall cracks become a common structural problem, affecting their appearance, safety, and durability. Wall cracks are caused by a variety of factors, including environmental erosion, building vibrations, foundation settlement, and temperature changes. The presence of cracks reduces a building's water tightness, insulation, and structural stability, and in extreme cases, can lead to building collapse.

[0003] Existing microbial remediation devices mostly employ adhesive structures fixed to the wall surface for grouting operations, such as the device disclosed in patent publication number CN220246709U. However, this adhesive repair method has drawbacks. The additional shear force generated during the repair process can easily cause secondary damage to the wall. Removing the adhesive material may affect the integrity of the wall surface, potentially causing irreversible damage to historical buildings or protected structures. Furthermore, traditional microbial remediation devices have a simple structure, lack a flexible adjustment mechanism for the reaction zone area, and are difficult to handle cracks of different shapes and locations. The direction and amount of the repair fluid injection are also difficult to control precisely, resulting in limited repair effectiveness. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for repairing wall cracks using microorganisms. This solves the problems of existing microbial repair devices, which mostly use adhesive structures for grouting repair, easily causing secondary damage to the wall and affecting the integrity of the wall surface; and the simple structure of the device, inflexible adjustment of the reaction zone area, difficulty in dealing with different cracks, difficulty in accurately controlling the injection of repair fluid, and limited repair effect.

[0005] The present invention relates to a device for repairing wall cracks using microorganisms, comprising a crack sealing grouting chamber for grouting, a retractable support frame installed on one side of the crack sealing grouting chamber, and a liquid infusion grouting pipe provided on one side of the crack sealing grouting chamber, the liquid infusion grouting pipe being used to cooperate with the crack sealing grouting chamber to fill the crack with grout.

[0006] The crack sealing grouting chamber has a triangular structure, with a double-layer grouting angle adjustment plate on one side. One side of the double-layer grouting angle adjustment plate is adapted to one side of the telescopic support frame.

[0007] The double-layer grouting angle adjustment disc includes two circular turntables that rotate about the central axis of the turntables and are fixed by locking components.

[0008] One or more positioning bolts are provided on the outer side of the double-layer grouting adjustment plate, and the multiple positioning bolts are adapted to the telescopic support frame;

[0009] The double-layer grouting angle adjustment disc is provided with multiple first positioning bolt holes in the middle, which are adapted to one side of the crack sealing grouting chamber through the positioning bolts.

[0010] The infusion and grouting pipeline has at least two sets. One set of infusion and grouting pipelines is connected to the microbial bacterial solution reagent and the calcium salt reaction solution respectively. The other set of infusion and grouting pipelines has a drain hole on the outside of the pipeline. A dual-liquid grouting machine is installed at one end of the drain hole for directional injection of repair solution.

[0011] As a further improvement of this utility model, the bottom of the telescopic support frame is provided with a weighted pressure-bearing base for supporting the device and adjusting the height of the crack sealing grouting chamber as needed in conjunction with the telescopic support frame. The bottom of the weighted pressure-bearing base is provided with two friction grooves, and the position of the device is fixed by placing a counterweight.

[0012] As a further improvement of this utility model, a flexible sealing pad is provided on one side of the crack sealing grouting chamber to tightly fit the wall surface and form a closed space, so as to enhance the sealing performance and prevent the repair fluid from leaking out.

[0013] As a further improvement of this utility model, the double-layer grouting angle adjustment disc is a double-layer design, and the inner layer and the outer layer are rotatable. The grouting angle of the device is adjusted by matching multiple first positioning bolt holes with multiple first positioning bolt hole screw holes.

[0014] As a further improvement of this utility model, the infusion grouting pipe is provided with a plurality of evenly spaced drainage holes for conveying repair fluid to the crack sealing grouting chamber for injection into the crack.

[0015] As a further improvement of this utility model, the crack sealing grouting chamber includes a storage chamber, one end of which is provided with a chamber grouting port, and a flexible sealing pad is provided on the side of the chamber grouting port that contacts the crack to seal the chamber grouting port.

[0016] As a further improvement of this utility model, fixing holes are provided on both sides of the storage cavity, and the fixing holes are respectively adapted to two sets of liquid infusion and grouting pipes.

[0017] As a further improvement of this utility model, a telescopic sleeve is provided on the outside of the storage cavity, and an adjusting airbag is provided on the side of the telescopic sleeve that contacts the gap. The outside of the adjusting airbag is adapted to the flexible sealing strip and is used to seal one end of the telescopic sleeve.

[0018] As a further improvement of this utility model, the telescopic support frame includes a support plate, a lead screw is provided in the middle of one side of the support plate, a motor is provided at one end of the lead screw near the weighted pressure base, the bottom of the motor is fixed to the weighted pressure base, and counterweights are provided on both sides of the motor at the top of the pressure base for fixing the position of the device.

[0019] As a further improvement of this utility model, a mounting plate is provided at the rod body of the lead screw, and the two sides of the mounting plate are slidably connected to the two sides of the inner wall of the support plate.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This utility model device does not require an adhesive structure to connect with the wall, thus avoiding damage to the wall surface such as scratches and peeling caused by the removal of adhesive materials. It is especially suitable for historical buildings or protective structures with high requirements for the integrity of the wall surface.

[0022] Furthermore, a flexible sealing pad is installed at the grouting port of the crack sealing grouting chamber, and an adjusting airbag and a flexible sealing strip are installed at the end of the telescopic sleeve. When these flexible components come into contact with the wall, they can fit tightly against the wall surface, ensuring both sealing and preventing hard damage to the wall.

[0023] The telescopic support frame allows the device to flexibly adjust the position of the crack sealing grouting chamber according to the height of the wall crack, enabling approximate height adjustment. In another embodiment, a screw rod is used to drive the precise movement of the mounting plate, which enables more detailed height adjustment to adapt to cracks at different heights.

[0024] Furthermore, the device features a double-layered, rotatable grouting angle adjustment disc. By matching multiple first positioning bolt holes with their corresponding screw holes, the grouting angle can be flexibly adjusted. This allows the device to accurately inject repair fluid into cracks of different directions and angles based on the specific direction and shape of the wall cracks. In another embodiment, a telescopic sleeve fitted outside the storage chamber is elastic and can be adjusted according to the depth of the wall crack. When the crack is deep, the telescopic sleeve is lengthened, allowing the grouting port in the chamber to penetrate deeper into the crack; when the crack is shallow, the telescopic sleeve is shortened, ensuring the device can adapt to cracks of different depths.

[0025] The infusion grouting pipeline has multiple evenly spaced drainage holes, which allows the repair fluid to be distributed relatively evenly into the crack sealing grouting chamber, avoiding localized underfilling or overfilling. Different groups of infusion grouting pipelines respectively deliver microbial inoculum reagent, calcium salt reaction solution, and other repair fluids. Furthermore, through equipment such as a dual-liquid grouting machine, the injection volume and speed of the repair fluid can be controlled. Combined with the use of flexible sealing pads, adjusting airbags, and flexible sealing strips, the sealing performance between the crack sealing grouting chamber and the wall is enhanced, forming a closed space and preventing repair fluid leakage. This ensures that all the repair fluid is injected into the wall crack, improving the utilization rate of the repair fluid and guaranteeing precise control of the injection volume. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0027] Figure 1 This is a three-dimensional structural diagram of the combination of the crack sealing grouting chamber and the telescopic support of this utility model;

[0028] Figure 2 This is a schematic diagram of the combined structure of the telescopic support frame and the weighted pressure-bearing base of this utility model;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the combination of the double-layer grouting angle adjustment disc and the crack sealing grouting chamber of this utility model;

[0030] Figure 4 This is a three-dimensional structural diagram of the retractable support frame in another embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the combined structure of the telescopic support frame and the weighted pressure-bearing base in another embodiment of the present invention;

[0032] Figure 6 This is a side view of the combined structure of the telescopic support frame and the weighted pressure-bearing base of this utility model.

[0033] Figure 7 This is a schematic diagram of the three-dimensional structure of the combination of the double-layer grouting angle adjustment disc and the crack sealing grouting chamber in another embodiment of the present invention;

[0034] Figure 8 This is a side view of the crack sealing grouting chamber in another embodiment of the present invention;

[0035] Figure 9 This is a top view of the grouting port structure of the cavity of this utility model;

[0036] Figure 10This is a front view schematic diagram of the combination of the crack sealing grouting chamber and the telescopic support of this utility model.

[0037] In the diagram: 1. Positioning bolt; 2. Crack sealing grouting chamber; 3. Liquid grouting pipeline; 4. Double-layer grouting angle adjustment plate; 5. Telescopic support frame; 6. Weighted pressure-bearing base; 7. Dual-liquid grouting machine; 8. Friction groove; 9. First positioning bolt hole; 10. Flexible sealing pad; 11. Buckle; 12. Gap; 13. Flexible sealing strip;

[0038] 21. Storage chamber; 22. Fixing hole; 23. Grouting port of the chamber; 24. Adjusting airbag; 25. Telescopic sleeve;

[0039] 51. Support plate; 52. Lead screw; 53. Mounting plate; 54. Motor; 55. Counterweight. Detailed Implementation

[0040] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0041] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] This utility model provides a feasible embodiment, as detailed below. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 as well as Figure 10 As buildings age, wall cracks become a common structural problem, affecting their appearance, safety, and durability. Wall cracks are caused by a variety of factors, including environmental erosion, building vibration, foundation settlement, and temperature changes. The presence of cracks reduces a building's water tightness, insulation, and structural stability, and in extreme cases, can lead to building collapse.

[0043] Existing microbial remediation devices mostly use adhesive structures fixed to the wall surface for grouting. However, this adhesive repair method has drawbacks. The additional shear force generated during the repair process can easily cause secondary damage to the wall. Removing the adhesive material may affect the integrity of the wall surface and may cause irreversible damage to historical buildings or protected structures. Furthermore, traditional microbial remediation devices have a simple structure and lack a flexible adjustment mechanism for the reaction zone area, making it difficult to cope with cracks of different shapes and locations. The direction and amount of the repair fluid injection are also difficult to control precisely, resulting in limited repair effects. Based on this, this application provides a device for repairing wall cracks using microorganisms, including a crack sealing grouting chamber 2 for grouting, a telescopic support frame 5 installed on one side of the crack sealing grouting chamber 2, and a grouting infusion pipe 3 provided on one side of the crack sealing grouting chamber 2. The grouting infusion pipe 3 is used to cooperate with the crack sealing grouting chamber 2 to fill the crack 12 with grout.

[0044] In some embodiments, the crack sealing grouting chamber 2 has a triangular structure, with a double-layer grouting angle adjustment plate 4 on one side, and one side of the double-layer grouting angle adjustment plate 4 is adapted to one side of the telescopic support frame 5.

[0045] The double-layer grouting angle adjustment disc 4 includes two circularly arranged turntables that rotate about the central axis of the turntables and are fixed by locking components.

[0046] In some embodiments, one or more positioning bolts 1 are provided on the outer side of the double-layer grouting adjustment plate, and the plurality of positioning bolts 1 are adapted to the telescopic support frame 5; a plurality of first positioning bolt holes 9 are provided in the middle of the double-layer grouting angle adjustment plate 4, which are adapted to one side of the crack sealing grouting chamber 2 through the positioning bolts.

[0047] There are at least two sets of infusion grouting pipes 3. One set of infusion grouting pipes 3 is connected to the microbial bacterial solution reagent and the calcium salt reaction solution respectively. The other set of infusion grouting pipes 3 has a drain hole on the outside of the pipe. A dual-liquid grouting machine 7 is installed at one end of the drain hole for directional injection of repair solution.

[0048] See Figure 3 The crack sealing grouting chamber 2 adopts a triangular structure, which has good stability and adaptability, and can better fit wall cracks of different shapes and locations. A double-layer grouting angle adjustment plate 4 is set on one side of the crack sealing grouting chamber 2, which plays an important role.

[0049] One side of it is connected to a telescopic support frame 5, which is composed of an adjustable buckle 11 structure. It can adjust the height of the crack sealing grouting chamber according to the different positions of the wall cracks, ensuring that the repair fluid can smoothly enter the reaction zone and complete the reaction. The telescopic support frame 5 can provide stable support for the crack sealing grouting chamber 2. At the same time, multiple positioning bolts 1 are set on the outside of the double-layer grouting adjustment plate. The multiple positioning bolts 1 are adapted to the telescopic support frame 5. When it is necessary to adjust the position or angle of the crack sealing grouting chamber 2, it can be fixed and adjusted by the multiple positioning bolts 1, so that the crack sealing grouting chamber 2 can be accurately aligned with the wall crack.

[0050] The double-layer grouting angle adjustment disc 4 has multiple first positioning bolt holes 9 in the middle, which are adapted to the crack sealing grouting chamber 2 through positioning bolts. This enhances the stability and reliability of the connection between the double-layer grouting angle adjustment disc 4 and the crack sealing grouting chamber 2, and allows the relative position and angle between the two to be adjusted according to actual needs to meet the requirements of different crack repairs.

[0051] The specific structure of the double-layer grouting angle adjustment disc 4 is as follows: two discs arranged opposite each other are combined and can rotate relative to each other. As can be seen from the above, when one disc is fixed to the telescopic support frame 5 by the positioning bolt 1, the other disc can rotate relative to the fixed disc, thereby achieving 360° rotation and realizing multi-angle adjustment.

[0052] After adjustment, to achieve a fixed position, a locking device can be used to secure the rotatable disc to one side of the disc combined with the telescopic support frame 5. Please refer to [link / reference needed]. Figure 1 In this embodiment, screw holes arranged in a ring array are provided at the disc fixed to the telescopic support frame 5. At this time, the other rotating disc is fixed by bolt locking member.

[0053] Furthermore, in addition to the above-described embodiments, in another embodiment (not shown in the figure), the double-layer grouting angle adjustment disc 4 can also use only one disc connected to the motor. In this case, the motor is connected to the telescopic support frame 5, and the disc can be adjusted by rotating the motor.

[0054] The telescopic support frame 5 is installed on one side of the crack sealing grouting chamber 2. Its telescopic nature allows the device to adapt to wall cracks of different heights and distances. When dealing with cracks at higher locations, the telescopic support frame 5 can be extended to allow the crack sealing grouting chamber 2 to reach a suitable height; while for cracks at closer or lower locations, the length of the telescopic support frame 5 can be shortened. The telescopic support frame 5 and the double-layer grouting angle adjustment plate 4 cooperate with each other through multiple positioning bolts 1 to ensure the stability and accuracy of the device under different working conditions.

[0055] There are at least two sets of infusion grouting pipes 3, and different sets of infusion grouting pipes 3 have different functions. One set of infusion grouting pipes 3 is connected to containers for conveying microbial liquid reagent and calcium salt reaction solution. When repairing wall cracks, the microbial liquid reagent and calcium salt reaction solution are conveyed to the crack sealing grouting chamber 2 through this set of infusion grouting pipes 3 and then injected into the wall cracks. The microorganisms in the microbial liquid reagent can react chemically with the calcium salt reaction solution to generate substances such as calcium carbonate, thereby filling the wall cracks and achieving the purpose of repair.

[0056] The other set of infusion grouting pipes 3 has a drain hole on the outside of the pipe. A dual-liquid grouting machine 7 is installed at one end of the drain hole. The dual-liquid grouting machine 7 can inject the repair liquid into the wall crack through the drain hole in a directional manner, so that the injection of the repair liquid can better adapt to the complex wall crack situation, ensure that the repair liquid is evenly distributed in the crack, and improve the repair effect.

[0057] When using this device to repair wall cracks, firstly, adjust the length of the telescopic support frame 5 according to the location and height of the crack to align the crack sealing grouting chamber 2 with the crack. Then, adjust the relative position and angle between the double-layer grouting angle adjusting plate 4, the telescopic support frame 5, and the crack sealing grouting chamber 2 using multiple positioning bolts 1, multiple first positioning bolt holes 9, and positioning bolts to ensure that the crack sealing grouting chamber 2 can tightly fit the crack.

[0058] Next, the dual-liquid grouting machine 7 is started, and the microbial inoculum reagent and calcium salt reaction solution are delivered to the crack sealing grouting chamber 2 through the corresponding infusion grouting pipe 3. At the same time, another set of infusion grouting pipes 3 injects repair liquid through the drain hole under the action of the dual-liquid grouting machine 7 to fill and repair the crack. In the entire repair process, since the device does not require the use of adhesive structure, it avoids secondary damage to the wall and can flexibly adjust the grouting angle and precisely control the injection of repair liquid, which can better deal with wall cracks of different shapes and locations and improve the repair effect.

[0059] Please see Figure 3 and Figure 7 as well as Figure 8 The storage chamber 21 has fixing holes 22 on both sides, and the fixing holes 22 are adapted to the two sets of liquid infusion and grouting pipes 3 respectively.

[0060] The bottom of the telescopic support platform is provided with a weighted pressure base 6, which is used to support the device and adjust the height of the crack sealing grouting chamber as needed in conjunction with the telescopic support platform. The bottom of the weighted pressure base 6 is provided with two friction grooves 8, and the position of the device is fixed by placing a counterweight 55.

[0061] A flexible sealing pad 10 is provided on one side of the crack sealing grouting chamber 2 to tightly fit the wall surface and form a closed space to enhance the sealing performance and prevent the repair fluid from leaking out.

[0062] The double-layer grouting angle adjustment plate 4 is a double-layer design, and the inner and outer layers can rotate. The grouting angle of the device is adjusted by matching multiple first positioning bolt holes with multiple first positioning bolt holes 9.

[0063] The storage chamber 21 is used to store microbial inoculant, calcium salt reaction solution, and other repair solutions. Fixing holes 22 are provided on both sides of the storage chamber 21. These fixing holes 22 are adapted to two sets of infusion grouting pipes 3, ensuring that the infusion grouting pipes 3 can be stably connected to the storage chamber 21. When the device starts working, the microbial inoculant and calcium salt reaction solution and other repair solutions can be smoothly transported from the storage chamber 21 to the crack sealing grouting chamber 2 through the infusion grouting pipes 3, and then injected into the wall crack. The fixing holes 22 ensure the sealing and stability of the connection between the infusion grouting pipes 3 and the storage chamber 21, preventing leakage of the repair solution during transportation, thereby ensuring the smooth progress of the entire grouting process.

[0064] The telescopic support platform plays a role in adjusting the height of the device. It is equipped with a weighted pressure base 6 at its bottom. The weighted pressure base 6 has important functions. On the one hand, it can provide stable support for the entire device, ensuring that the device will not shake or tip over during operation. On the other hand, it can work with the telescopic support platform to adjust the height of the crack sealing grouting chamber as needed. For example, when the crack in the wall is high, the telescopic support platform can be extended to allow the crack sealing grouting chamber and related grouting components to reach a suitable height, facilitating grouting operations.

[0065] The bottom of the weighted pressure base 6 is provided with two friction grooves 8. These two friction grooves 8 can increase the friction between the base and the ground, making the device more stable. At the same time, by placing a counterweight 55 on the weighted pressure base 6, the position of the device can be further fixed. In actual operation, according to the ground conditions where the device is located and the stability requirements of the working environment, a counterweight 55 of appropriate weight can be selected and placed on the weighted pressure base 6 to ensure that the device can remain stable under different working conditions and avoid the device moving due to external factors, which would affect the grouting repair effect.

[0066] The crack sealing grouting chamber 2 has a flexible sealing pad 10 on one side. The flexible sealing pad 10 is usually made of a soft material with good elasticity and sealing properties, such as rubber. When the device is placed at the crack in the wall, the flexible sealing pad 10 can fit tightly against the wall surface to form a closed space. This closed space is very important because it can effectively prevent the repair liquid from leaking out during the grouting process, ensuring that the repair liquid can be completely injected into the crack in the wall, improving the utilization rate of the repair liquid and the repair effect. At the same time, the use of the flexible sealing pad 10 also avoids damage to the wall surface caused by hard contact, which is especially suitable for historical buildings or protective structures where the integrity of the wall surface is required.

[0067] The double-layer grouting angle adjustment disc 4 adopts a double-layer design, and the inner and outer layers are rotatable. This gives the device a high degree of flexibility in adjusting the grouting angle. The double-layer grouting angle adjustment disc 4 is equipped with multiple first positioning bolt holes and multiple first positioning bolt holes 9. These two types of bolt holes match each other. In actual operation, according to the specific direction and shape of the wall crack, the operator can adjust the angle to a suitable position by rotating the inner and outer layers of the double-layer grouting angle adjustment disc 4. Then, bolts are used to pass through the multiple first positioning bolt holes and multiple first positioning bolt holes 9 to fix the adjusted angle. In this way, the device can accurately inject the repair fluid into the wall crack at the required angle, better adapting to cracks of different directions and angles, and improving the targeting and effectiveness of the repair.

[0068] When using this device to repair wall cracks, first place the device near the wall crack, adjust the length of the telescopic support platform according to the height of the crack, and fix the device position by the weighted pressure base 6 and counterweight 55 to ensure stability. Then, connect the liquid injection grouting pipe 3 to the storage chamber 21 through the fixing hole 22. Next, adjust the angle of the double-layer grouting angle adjustment plate 4 to adapt to the direction of the crack. Then, tightly fit the crack sealing grouting chamber 2 to the wall crack with the flexible sealing pad 10 to form a closed space. Finally, transport the repair fluid to the crack sealing grouting chamber 2 through the liquid injection grouting pipe 3 and inject it into the wall crack to complete the repair operation. Throughout the process, the various components cooperate with each other to achieve effective repair of wall cracks.

[0069] The infusion grouting pipe 3 is provided with multiple evenly spaced drainage holes for conveying repair fluid to the crack sealing grouting chamber 2 and injecting it into the crack 12.

[0070] The crack sealing grouting chamber 2 includes a storage chamber 21. One end of the storage chamber 21 is provided with a chamber grouting port 23. A flexible sealing pad 10 is provided on the side of the chamber grouting port 23 that contacts the crack 12, for sealing the chamber grouting port 23.

[0071] This utility model provides another embodiment, specifically for the crack sealing grouting chamber 2, as follows;

[0072] Please see Figure 8 , Figure 9 as well as Figure 10 A telescopic sleeve 25 is fitted on the outside of the storage cavity 21. An adjusting airbag 24 is provided on the side of the telescopic sleeve 25 that contacts the gap 12. The outside of the adjusting airbag 24 is adapted to the flexible sealing strip 13 and is used to seal one end of the telescopic sleeve 25.

[0073] The infusion grouting pipe 3 is equipped with multiple evenly spaced drainage holes. The function of these drainage holes is to transport the repair fluid from the pipe to the crack sealing grouting chamber 2, and then inject it into the wall crack 12. When the device starts working, the repair fluid, such as microbial inoculant and calcium salt reaction solution, flows through the infusion grouting pipe 3 and is evenly distributed into the crack sealing grouting chamber 2. Through sufficient reaction, calcium carbonate precipitation reaction is formed, and then it is evenly injected into the wall crack 12, ultimately achieving biomineralization repair of the crack. This helps to improve the filling effect of the repair fluid in the crack 12 and avoids local underfilling or overfilling.

[0074] The crack sealing grouting chamber 2 includes a storage chamber 21, which is used to temporarily store the repair fluid delivered from the grouting pipeline 3. One end of the storage chamber 21 is provided with a grouting port 23, which is the injection channel for the repair fluid to enter the wall crack 12 from the storage chamber 21. A flexible sealing pad 10 is provided on the side of the grouting port 23 that contacts the crack 12. The flexible sealing pad 10 is usually made of a soft material with good sealing properties, such as rubber. When the grouting port 23 is aligned with the wall crack 12, the flexible sealing pad 10 can tightly adhere to the wall surface, sealing the crack 12 between the grouting port 23 and the wall. This effectively prevents the repair fluid from leaking out from the contact point between the grouting port 23 and the wall during the grouting process, ensuring that all the repair fluid is injected into the wall crack 12, improving the utilization rate of the repair fluid, and also preventing the repair fluid from leaking and polluting the surrounding environment.

[0075] A telescopic sleeve 25 is fitted around the outside of the storage chamber 21. The telescopic sleeve 25 has a certain degree of flexibility. This telescopic design allows the device to adapt to wall cracks of different depths or shapes. When the wall crack is deep, the telescopic sleeve 25 can be lengthened so that the grouting port 23 of the chamber can be closer to the inside of the crack; when the crack is shallow, the telescopic sleeve 25 can be shortened.

[0076] An adjusting airbag 24 is provided on the side of the telescopic sleeve 25 that contacts the gap 12. The outer side of the adjusting airbag 24 is adapted to the flexible sealing strip 13. The adjusting airbag 24 can be inflated or deflated to change its size and shape. When the device is in use, the adjusting airbag 24 is brought into contact with the wall surface. By inflating the adjusting airbag 24, it expands and fits tightly against the wall surface. At the same time, the flexible sealing strip 13 further seals the gap between one end of the telescopic sleeve 25 and the wall as the adjusting airbag 24 expands. In this way, the telescopic sleeve 25, the adjusting airbag 24, and the flexible sealing strip 13 work together to further enhance the sealing performance between the entire crack sealing grouting chamber 2 and the wall, forming a more enclosed space. This ensures that the repair fluid will not leak from other parts during the injection of the grout into the wall gap 12, improving the grouting effect and efficiency.

[0077] When using this device to repair wall cracks, firstly, the height of the telescopic support platform and the angle of the double-layer grouting angle adjustment plate 4 are adjusted according to the condition of the wall crack, so that the crack sealing grouting chamber 2 is aligned with the wall crack 12. Then, the length of the telescopic sleeve 25 is adjusted according to the depth of the crack, bringing the grouting port 23 of the chamber closer to the crack. Next, the adjusting airbag 24 is inflated, causing it to expand and seal the gap between the end of the telescopic sleeve 25 and the wall through the flexible sealing strip 13. At the same time, the flexible sealing pad 10 at the grouting port 23 of the chamber is tightly attached to the wall surface. Afterward, the dual-liquid grouting machine 7 and other equipment are started to deliver the repair fluid through the grouting pipeline 3. The fluid enters the storage chamber 21 of the crack sealing grouting chamber 2 through the drain hole, and is then injected into the wall crack 12 through the grouting port 23, completing the crack repair work. Throughout the process, the various components cooperate with each other to ensure that the repair fluid can be accurately, evenly, and effectively injected into the wall crack, avoiding leakage of the repair fluid and improving the repair effect of the wall crack.

[0078] This utility model provides another embodiment, specifically describing the retractable support frame 5;

[0079] The aforementioned telescopic support frame 5 can be configured with a telescopic cylinder in conjunction with the support plate 51, or it can be configured with an electric telescopic rod in conjunction with the support plate 51. Here, a lead screw 52 in conjunction with a motor 54 is used for description; the details are as follows:

[0080] Please see Figure 1 , Figure 4 , Figure 5 as well as Figure 6 The telescopic support frame 5 includes a support plate 51. A lead screw 52 is provided in the middle of one side of the support plate 51. A motor 54 is provided at one end of the lead screw 52 near the heavy-duty bearing base 6. The bottom of the motor 54 is fixed to the heavy-duty bearing base 6.

[0081] A mounting plate 53 is provided at the rod body of the lead screw 52, ​​and the two sides of the mounting plate 53 are slidably connected to the two sides of the inner wall of the support plate 51.

[0082] The support plate 51 provides a direct support surface for the supported object (specifically, the double-layer grouting angle adjustment disc 4). The support plate 51 has a regular plate-like structure, with a special design at the middle of one side for mounting the lead screw 52. There is a mounting groove or hole in the middle of this side that matches the size of the lead screw 52, ​​and one end of the lead screw 52 can be firmly installed in it, ensuring the stability of the connection between the lead screw 52 and the support plate 51, thereby ensuring that the support plate 51 can move accordingly when the lead screw 52 rotates.

[0083] The lead screw 52 is a threaded rod. Its end near the weighted pressure base 6 is connected to the motor 54. The lead screw 52 and the motor 54 can be connected by a coupling or other components. This connection method can ensure that the power of the motor 54 can be stably transmitted to the lead screw 52, ​​so that the lead screw 52 can rotate with the rotation of the motor 54, thereby ensuring that the moving distance and speed of the support plate 51 can be accurately controlled during the rotation.

[0084] Motor 54 provides power for the rotation of lead screw 52. The bottom of motor 54 is fixed to the weighted pressure base 6 by bolts or welding, ensuring the stability of motor 54 during operation and preventing vibration of motor 54 from affecting the normal operation of the entire support frame. Motor 54 can be a stepper motor or a servo motor, etc. Furthermore, motor 54 is also equipped with corresponding control circuits and drive devices. Through the control circuit, the rotation direction, speed and rotation angle of motor 54 can be precisely controlled, thereby achieving precise control of the extension and retraction of support plate 51.

[0085] The weighted pressure-bearing base 6 serves to stabilize the entire support frame. It is made of a dense, heavy material, such as cast iron, giving it significant weight and a stable structure. The large bottom area of ​​the weighted pressure-bearing base 6 provides greater stability in contact with the ground, effectively distributing the pressure on the support frame and preventing it from tipping over when supporting objects. At its top, there is a platform specifically for mounting the motor 54. The platform has mounting holes that mate with the bottom of the motor 54, allowing the motor 54 to be securely fixed to the weighted pressure-bearing base 6 using bolts and other connecting components.

[0086] Mounting plate 53 is located on the shaft of lead screw 52, ​​and its two sides are slidably connected to the inner walls of support plate 51. Mounting plate 53 has a nut or threaded hole that matches the thread of lead screw 52. When lead screw 52 rotates under the drive of motor 54, mounting plate 53 will move along the axial direction of lead screw 52. The two sides of mounting plate 53 are provided with sliders or grooves, which cooperate with the grooves or sliders on the inner walls of support plate 51. This sliding connection method can ensure the stability and accuracy of mounting plate 53 during movement, and also restricts mounting plate 53 to move only along the axial direction of lead screw 52, ​​avoiding shaking or displacement.

[0087] When the height of the support plate 51 needs to be adjusted, the rotation of the motor 54 is controlled, and the motor 54 drives the lead screw 52 to rotate. Since the mounting plate 53 and the lead screw 52 are connected by threads, the rotation of the lead screw 52 will cause the mounting plate 53 to move along the axial direction of the lead screw 52.

[0088] The mounting plate 53 is slidably connected to both sides of the inner wall of the support plate 51. Therefore, the movement of the mounting plate 53 will drive the support plate 51 to move together, thereby realizing the telescopic function of the support plate 51. By controlling the rotation direction and angle of the motor 54, the height of the support plate 51 can be precisely controlled to meet different support needs. For example, when it is necessary to raise the support plate 51 to support a taller object, the motor 54 is controlled to rotate forward, and the lead screw 52 drives the mounting plate 53 to move upward, thereby driving the support plate 51 to rise. When it is necessary to lower the support plate 51, the motor 54 is controlled to rotate in reverse, and the lead screw 52 drives the mounting plate 53 to move downward, and the support plate 51 falls accordingly.

[0089] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A device for repairing wall cracks using microorganisms, comprising a crack sealing grouting chamber (2) for grouting, a retractable support frame (5) installed on one side of the crack sealing grouting chamber (2), and a liquid injection grouting pipe (3) provided on one side of the crack sealing grouting chamber (2), the liquid injection grouting pipe (3) being used to cooperate with the crack sealing grouting chamber (2) to fill the crack (12) with grout; characterized in that: The crack sealing grouting chamber (2) has a triangular structure, and a double-layer grouting angle adjustment plate (4) is provided on one side. One side of the double-layer grouting angle adjustment plate (4) is adapted to one side of the telescopic support frame (5). The double-layer grouting angle adjustment disc (4) includes two circular turntables that rotate about the central axis of the turntables and are fixed by locking components. One or more positioning bolts (1) are provided on the outside of the double-layer grouting angle adjustment plate (4), and the multiple positioning bolts (1) are adapted to the telescopic support frame (5); The double-layer grouting angle adjustment plate (4) is provided with multiple first positioning bolt holes (9) in the middle, which are adapted to one side of the crack sealing grouting chamber (2) through the positioning bolts; The infusion grouting pipeline (3) has at least two sets. One set of infusion grouting pipeline (3) is connected to a microbial bacterial solution reagent and a calcium salt reaction solution respectively. The other set of infusion grouting pipeline (3) has a drain hole on the outside of the pipeline. A dual-liquid grouting machine (7) is provided at one end of the drain hole for directional injection of repair solution.

2. The apparatus according to claim 1, characterized in that: The bottom of the telescopic support frame (5) is provided with a weighted pressure-bearing base (6) for supporting the device and cooperating with the telescopic support frame (5) to adjust the height of the crack sealing grouting chamber as needed. The bottom of the weighted pressure-bearing base (6) is provided with two friction grooves (8) and the position of the device is fixed by placing a counterweight (55).

3. The apparatus according to claim 1, characterized in that: A flexible sealing pad (10) is provided on one side of the crack sealing grouting chamber (2) to tightly fit the wall surface and form a closed space to enhance the sealing performance and prevent the repair fluid from leaking out.

4. The apparatus according to claim 1, characterized in that: The double-layer grouting angle adjustment disc (4) is a double-layer design, and the inner and outer layers can rotate. The grouting angle of the device is adjusted by matching the screw holes of the first positioning bolt holes with the screw holes of the first positioning bolt holes (9).

5. The apparatus according to claim 1, characterized in that: The infusion grouting pipe (3) is provided with multiple evenly spaced drainage holes for conveying repair fluid to the crack sealing grouting chamber (2) and injecting it into the crack (12).

6. The apparatus according to claim 1, characterized in that: The crack sealing grouting chamber (2) includes a storage chamber (21), one end of which is provided with a chamber grouting port (23). A flexible sealing pad (10) is provided on the side of the chamber grouting port (23) that contacts the crack (12) to seal the chamber grouting port (23).

7. The apparatus according to claim 6, characterized in that: The storage cavity (21) has fixing holes (22) on both sides, and the fixing holes (22) are adapted to the two sets of liquid infusion and grouting pipes (3) respectively.

8. The apparatus according to claim 6, characterized in that: The storage cavity (21) is fitted with a telescopic sleeve (25) on the outside. One end of the telescopic sleeve (25) is provided with an adjusting airbag (24) on the side that contacts the gap (12). The outer side of the adjusting airbag (24) is adapted to the flexible sealing strip (13) for sealing one end of the telescopic sleeve (25).

9. The apparatus according to claim 1, characterized in that: The retractable support frame (5) includes a support plate (51). A lead screw (52) is provided in the middle of one side of the support plate (51). A motor (54) is provided at one end of the lead screw (52) near the weighted pressure base (6). The bottom of the motor (54) is fixed to the weighted pressure base (6). Weights (55) are provided on both sides of the motor (54) at the top of the pressure base (6) for fixing the position of the device.

10. The apparatus according to claim 9, characterized in that: The lead screw (52) is provided with a mounting plate (53) at the rod body, and the two sides of the mounting plate (53) are slidably connected to the two sides of the inner wall of the support plate (51).

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