Construction method for sealing outer wall screw hole

Abstract

The present application relates to the technical field of building repair, and particularly relates to a construction method for plugging a screw hole in an outer wall, which comprises the following steps: connecting a data acquisition instrument with a pressure sensor by using a data transmission line, and placing the pressure sensor into the screw hole; injecting mortar by using a pressure injection mortar gun; extruding the detachable inserted part in the hole by using mortar, and measuring the actual pressure value by using the pressure sensor; in the process of injecting mortar, the pressure in the digital display pressure injection mortar gun changes with the injection condition, and the pressure in the gun after the screw hole is injected with qualified mortar can be determined; after the injection is qualified, a semi-transparent fixed plugging sheet is used for plugging, and after the inspection is qualified, an operator puts a plastering size limiter on the side of the screw hole in the outer wall which needs to be plugged with mortar, and then performs plastering; the present application can intuitively understand the plugging condition of the screw hole in the outer wall in a certain time period by analyzing the pressure test value, and can perform standardized construction, and the plastering size limiter can form a standard circular plastering surface with a standard pattern, thereby performing standardized construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building repair, and in particular to a construction method for plugging a screw hole in an outer wall. BACKGROUND

[0002] Due to the technology of workers and raw material problems, the mortar grouting in the plugging process of the screw hole in the outer wall is not in place, and the plugging is not dense, etc. Therefore, how to improve the plugging quality of the screw hole in the outer wall, and quickly detect whether it is qualified, and improve the plastering quality of the screw hole outside, so as to meet the quality requirements of the project, has become a problem to be further studied in engineering construction. SUMMARY

[0003] The present application relates to the technical field of building repair, and in particular to a construction method for plugging a screw hole in an outer wall.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] A construction method for plugging a screw hole in an outer wall, the construction equipment comprises: a pressure sensor, a data acquisition instrument, a semi-transparent fixed plugging piece, a plastering size limiter and a digital pressure grouting gun, the pressure sensor comprises a pressure sensor, a spring pressure assembly and a detachable probe part, and a measurement scale is arranged on the digital pressure grouting gun.

[0006] The construction method comprises the following steps:

[0007] S1, connect the data acquisition instrument and the pressure sensor by using a data transmission line, place the pressure sensor into the screw hole by an operator, select a suitable detachable probe part according to the hole diameter and probe into the hole;

[0008] S2, grouting is carried out by using the digital pressure grouting gun, the grouting body is injected from the outside of the screw hole, the volume of the grouting body and the grouting pressure in the gun can be determined by using the digital pressure grouting gun, and whether the grouting is qualified can be determined by the grouting pressure in the gun;

[0009] S3, the grouting body in the hole extrudes the detachable probe part, the spring pressure assembly is pressed and rebounded, the actual pressure value is measured by the pressure sensor, and the measured pressure value is transmitted to the data acquisition instrument by the pressure sensor and displayed;

[0010] S4, during the grouting process, the pressure in the digital pressure grouting gun changes with the grouting condition, when the grouting condition is determined by the pressure sensor and the data acquisition instrument, the pressure value in the digital pressure grouting gun is displayed synchronously, the pressure in the gun after the grouting of the screw hole is qualified can be determined, and the volume of the grouting body can be determined by the measurement scale;

[0011] S5, after the qualified grouting, remove the pressure sensor, using a translucent fixed plugging piece for plugging, the standard pressure value displayed by the digital pressure grouting gun is the pressure qualified value;

[0012] S6, after the grouting is completed and the inspection is qualified, the operator puts the plastering size limiter to the side of the outer wall screw hole that needs to be grouted, and plasters within the fixed size, ensuring that the size of the outer wall plastering meets the unified standard.

[0013] Preferably, in step S1, the pressure sensor comprises a base and a pressure sensor, the pressure sensor is embedded in the base, a flange ring is installed on the outside of the base, a spring pressure assembly is provided at the end of the base, and a detachable probe part is connected to the upper part of the spring pressure assembly.

[0014] Preferably, in step S1, the data acquisition instrument comprises internal electronic elements and a control cabinet shell, the front panel of the data acquisition instrument is provided with a double five-bit display screen, a first function button, a second function button, a third function button, a fourth function button, a first output display lamp, a second output display lamp, a third output display lamp and a fourth peak display lamp.

[0015] The top plate and the side of the data acquisition instrument are uniformly provided with square ventilation openings, the data acquisition instrument is provided with quick-release pressure plates on both sides, and the data acquisition instrument is provided with internal electronic elements.

[0016] Preferably, the back panel of the data acquisition instrument is provided with a port, and the port comprises a transmitter output port, a sensor port, an external zero clearing port, an RS485 transmission port, a 220V power supply port and an output port.

[0017] The port is composed of a fastening nut, a metal gasket and a metal backing plate, and the port is provided with a plastic insulating baffle on both sides.

[0018] Preferably, in step S2, the digital pressure grouting gun comprises a grouting nozzle, a transparent grouting sleeve, a metering scale, a rubber plug, an internal pressure sensor, an internal base, a push rod, a handle, a digital display, a wire slot, an internal data connection line and a battery box, the metering scale is marked on the face of the transparent grouting sleeve, and the digital display is powered by the battery box.

[0019] Preferably, when the digital pressure grouting gun is used, the grouting material is poured in by opening the grouting nozzle, the grouting nozzle is tightened, the grouting is extruded downward by the push rod connected with the rubber plug, the grouting volume is clear by the metering scale on the transparent grouting sleeve, and the grouting pressure is displayed by the digital display.

[0020] Preferably, when the grout is extruded and injected, the pressure is transmitted to the internal pressure sensor connected with the internal base of the gun through the rubber plug, and is reflected on the digital display after being transmitted through the internal data connection line.

[0021] The standard pressure of the digital pressure grouting gun is defined by the qualified grouting pressure collected by the data acquisition instrument through the pressure sensor.

[0022] Preferably, in the step S5, the translucent fixed blocking piece is composed of a plastic inner ring and a plastic gasket, and is effectively connected, the outer diameter of the plastic inner ring is 0-1mm smaller than the inner diameter of the outer wall screw hole, and the diameter of the plastic gasket is 3-5mm larger than that of the plastic inner ring.

[0023] The translucent fixed blocking piece can directly observe the flow state of the mortar in the outer wall screw hole and determine whether the grouting is full.

[0024] Preferably, in the step S5, the translucent fixed blocking piece is used to block the inside of the screw hole before batch grouting, and the operator uses the digital pressure grouting gun outside the screw hole to grout according to the qualified pressure value, stops grouting when the pressure value in the gun reaches the standard, and can observe the state of the mortar through the translucent fixed blocking piece during grouting.

[0025] Preferably, in the step S6, the plastering size limiter is composed of an inner hole metal plate and a metal handle, the inner hole diameter of the inner hole metal plate is equal to the size of the outer wall screw hole that needs to be plastered, and the metal handle is fixed by being bent upward at an angle of 45° along the plane of one end of the inner hole metal plate.

[0026] Compared with the prior art, the present application has the following advantages:

[0027] 1. The operator pushes the detachable probe part on the upper part of the pressure sensor outside the screw hole to drive the spring pressure assembly to transmit pressure to the pressure sensor, and the pressure value is displayed through the data acquisition instrument to obtain the grouting pressure value, which determines whether the grouting is qualified and provides a basis for the operator to determine whether the outer wall screw hole blocking is qualified. Since the pressure sensor is only needed to be inserted into the hole for pressure testing during operation, and the translucent fixed blocking piece is used for blocking after the pressure testing is completed, the operation is simple, fast and easy to operate.

[0028] 2. The pressure testing value can be transmitted to the computer through the transmission port for analysis, and the blocking condition of the outer wall screw hole in a certain time period can be directly understood, which is easy for standardized construction.

[0029] 3. The translucent fixed blocking piece can directly observe the mortar injection condition.

[0030] 4. The plastering size limiter can form a standard circular plastering surface, which facilitates the operator to conduct standardized construction of the plastering outside the screw hole.

[0031] 5. The digital display pressure grouting gun can clearly show the grout injection volume and the grouting pressure inside the gun, and judge whether the grouting is qualified by the grouting pressure inside the gun. Attached Figure Description

[0032] Figure 1 This is a flowchart illustrating the construction process of a method for sealing bolt holes in external walls proposed in this invention.

[0033] Figure 2 This is a schematic diagram of the pressure sensor structure involved in the construction method for sealing bolt holes in external walls proposed in this invention;

[0034] Figure 3 This is a three-dimensional structural diagram of the data acquisition instrument involved in the construction method for sealing bolt holes in external walls proposed in this invention;

[0035] Figure 4 This is a rear view diagram of the data acquisition instrument involved in the construction method for sealing bolt holes in external walls proposed in this invention;

[0036] Figure 5 This is a three-dimensional structural diagram of a semi-transparent fixing and sealing plate involved in the construction method for sealing bolt holes in external walls proposed in this invention;

[0037] Figure 6 This is a three-dimensional structural diagram of the plastering size limiter involved in the construction method for sealing bolt holes in external walls proposed in this invention;

[0038] Figure 7 This is a schematic diagram of the digital display pressure grouting gun structure involved in the external wall bolt hole sealing construction method proposed in this invention.

[0039] In the diagram: 1. Pressure sensor; 2. Data acquisition instrument; 3. Semi-transparent fixing sealing plate; 4. Plastering size limiter; 5. Digital display pressure grouting gun; 6. Base; 7. Pressure sensor; 8. Flange ring; 9. Spring pressure assembly; 10. Removable probe component; 12. Control cabinet housing; 13. Dual five-digit display screen; 14. First function button; 15. Second function button; 16. Third function button; 17. Fourth function button; 18. First output indicator light; 19. Second output indicator light; 20. Third output indicator light; 21. Fourth peak indicator light; 22. Transmitter output port; 23. Sensor port; 24. External zeroing. 25. RS485 transmission port; 26. 220V power port; 27. Output port; 28. Square vent; 29. ​​Quick-release pressure plate; 30. Fastening nut; 31. Metal gasket; 32. Metal pad; 33. Plastic insulating baffle; 34. Plastic inner ring; 35. Plastic gasket; 36. Hollowed-out metal plate; 37. Metal handle; 38. Grouting nozzle; 39. Transparent grouting sleeve; 40. Measuring scale; 41. Rubber plug; 42. Internal pressure sensor; 43. Internal base; 44. Push rod; 45. Handle; 46. Digital display; 47. Cable tray; 48. Internal data connection cable; 49. Battery box. Detailed Implementation

[0040] 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, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0041] Reference Figures 1-7 A method for sealing bolt holes in external walls, involving equipment including a pressure sensor 1, a data acquisition instrument 2, a semi-transparent fixing sealing plate 3, a plastering size limiter 4, and a digital display pressure grouting gun 5;

[0042] like Figure 2 As shown, the pressure sensor 1 has a base 6 at the bottom, a pressure sensor 7 on it, and the pressure sensor 7 is embedded in the base 6 and a flange ring 8 is installed. The flange ring 8 and the end of the base 6 are provided with a spring pressure assembly 9, and the upper part of the spring pressure assembly 9 is connected to a detachable probe 10.

[0043] The pressure sensor 7 is embedded in the base 6, and a flange ring 8 larger than the diameter of the screw hole is arranged on the base 6. When in use, the spring pressure assembly 9 on the upper part of the flange ring 8 and the detachable probe part 10 are inserted into the screw hole, wherein the outer diameter of the detachable probe part 10 is equal to the inner diameter of the screw hole. When the diameter of the screw hole changes, the detachable probe part 10 can be disassembled and replaced;

[0044] When the outer wall screw hole is blocked, the grouting body is injected from the outside of the screw hole, the detachable probe part 10 is extruded in the hole, the spring pressure assembly 9 is pressed and rebounded, the actual pressure value is measured by the pressure sensor 7, and the data transmission line is connected with the data acquisition instrument. After being processed by the internal electronic elements, the data is transmitted;

[0045] As shown in Figure 3 、 Figure 4 , the data acquisition instrument 2 contains internal electronic elements, the shell is uniformly provided with square ventilation openings 28 which are symmetrically distributed along the data acquisition instrument 2, and the two sides are provided with quick-release pressing plates 29. The front surface is provided with a double five-digit display screen 13, a first function button 14, a second function button 15, a third function button 16, a fourth function button 17, a first output display lamp 18, a second output display lamp 19, a third output display lamp 20 and a fourth peak value display lamp 21. The back panel is provided with a transmitter output port 22, a sensor port 23, an external zero reset port 24, an RS485 transmission port 25, a 220V power supply port 26 and an output port 27. Each port is composed of a fastening nut 30, a metal gasket 31 and a metal gasket plate 32, and the two sides are provided with plastic insulating baffles 33.

[0046] The double five-digit display screen 13 displays the net pressure value on the main screen and displays the set parameters, total pressure value, peak value and unit on the auxiliary screen.

[0047] The first function button 14 is initially set to enter the menu and return to the upper level. The second function button 15 is initially set to enter the calibration interface, and long press to enter the zero setting option. The third function button 16 is initially set to change the color lamp and increase the value. The fourth function button 17 is a menu interface for confirming the menu, and the display interface is for switching the second window display.

[0048] The first output display lamp 18, the second output display lamp 19 and the third output display lamp 20 are respectively in the relay triggering state when the lamps are on, and are in the untriggered state when the lamps are off.

[0049] The sensor port 23 on the back of the data acquisition instrument 2 is connected with the pressure sensor 1 through the data transmission line. In the pressure calibration mode, the positive and negative sensor signals can be ignored, and the positive value can be directly calibrated.

[0050] RS485 transmission port 25 connects to an external computer device via an adapter cable for data transmission; 220V power port 26 connects to a power source via a power cord for power supply; output port 27 is a relay alarm output terminal, which can be set to output ranges.

[0051] like Figure 5 As shown, the semi-transparent fixing and sealing piece 3 is composed of a plastic inner ring 34 and a plastic gasket 35. The outer diameter of the plastic inner ring 34 is the same as or slightly smaller than the inner diameter of the bolt hole in the outer wall by 1mm. The diameter of the plastic gasket 35 is larger than that of the plastic inner ring 34, with a size difference of 3mm to 5mm.

[0052] After the pressure sensor 1 passes the pressure test, the semi-transparent fixing sealing piece 3 is pressed in to seal the blockage.

[0053] like Figure 6 As shown, the plastering size limiter 4 consists of a perforated metal plate 36 and a metal handle 37. The perforated metal plate 36 is made of metal sheet. The inner diameter of the hole in the perforated metal plate 36 is equal to the plastering size required for the outer wall bolt hole. The metal handle 37 is bent upward at a 45-degree angle along one end of the plane of the perforated metal plate 36. The perforated metal plate 36 and the metal handle 37 can be fixed by welding or riveting.

[0054] like Figure 7 As shown, the digital display pressure grouting gun 5 consists of a grouting nozzle 38, a transparent grouting sleeve 39, a measuring scale 40, a rubber plug 41, an internal pressure sensor 42, an internal base 43, a push rod 44, a handle 45, a digital display 46, a wire groove 47, an internal data connection cable 48, and a battery box 49. The measuring scale 40 is engraved on the surface of the transparent grouting sleeve 39, and the digital display 46 is powered by the battery box 49.

[0055] When using the digital pressure grouting gun 5, the grouting material is poured in after opening the grouting nozzle 38. After tightening the grouting nozzle 38, the grouting material is squeezed downward by the push rod 44 connected to the rubber plug 41. The grouting volume is clearly defined by the measuring scale 40 on the transparent grouting sleeve 39, and the grouting pressure is displayed by the digital display 46.

[0056] When the slurry is squeezed and injected, the pressure is transmitted through the rubber plug 41 to the pressure sensor 42 inside the gun connected to the gun base 43, and then transmitted through the data connection line 48 inside the gun and reflected on the digital display 46.

[0057] The standard grouting pressure of the digital pressure grouting gun 5 is calculated and defined by the qualified grouting pressure collected by the data acquisition instrument 2 through the pressure sensor 1.

[0058] The principle of the embodiment of the application is as follows: in the initial state, the power line is connected through the 220V power port 26 to be powered on, and the data acquisition instrument 2 is connected with the pressure sensor 1 through the sensor port 23 by using the data transmission line, the operator puts the pressure sensor 1 into the screw hole, selects the suitable detachable probe part 10 according to the hole diameter and probes into the hole, grouting is carried out through the digital pressure grouting gun 5, the grouting body is injected from the outside of the screw hole, the detachable probe part 10 is extruded in the hole, the spring pressure assembly 9 is pressed and rebounded, the actual pressure value is measured through the pressure sensor 7, the measured pressure value is transmitted to the data acquisition instrument 2 through the pressure sensor 1 and displayed, the data conversion line can be connected with the computer through the RS485 transmission port 25 to analyze the data. In normal use, the data does not need to be analyzed through the computer, the actual pressure value is displayed in real time through the front double five-bit display screen 13 of the data acquisition instrument 2, and whether to stop grouting is determined through the pressure value.

[0059] During the grouting process, the pressure in the digital pressure grouting gun 5 changes with the grouting condition, when the grouting qualified condition is determined through the pressure sensor 1 and the data acquisition instrument 2, the digital pressure grouting gun 5 synchronously displays the pressure value, the pressure in the gun after the screw hole grouting is qualified can be determined, and the grouting volume can be determined through the metering scale 40, after the grouting is qualified, the pressure sensor 1 is removed, and the translucent fixed plugging sheet 3 is used for plugging. At the same time, the standard pressure value displayed by the digital pressure grouting gun 5 is the qualified pressure value.

[0060] When batch grouting is carried out, the translucent fixed plugging sheet 3 can be used for plugging in the screw hole, the operator uses the digital pressure grouting gun 5 outside the screw hole to carry out grouting according to the qualified pressure value, stops grouting when the pressure value in the gun reaches the standard, and the grouting state can be observed through the translucent fixed plugging sheet 3 during grouting.

[0061] The translucent fixed plugging sheet 3 can directly observe the grouting flow state in the screw hole of the outer wall, and determine whether the grouting is full.

[0062] After the grouting is completed and the inspection is qualified, the operator sleeves the plastering size limiter 4 to the side of the outer wall screw hole which needs to be grouted by the mortar, and carries out plastering in the fixed size, so that the plastering size of the outer wall meets the unified standard.

[0063] The above is only the preferred specific implementation manner of the application, but the protection scope of the application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

[0064] It is also important to note that the term "or" as used herein is intended to mean an inclusive "or," such that "A or B" means any or all of the items listed with no options required to be selected with the item. Further, the use of "including" and / or "having" has been used herein to represent existence of a feature, step, operation, component, member, and / or the like, and is intended to cover an inclusive "and / or" rather than an exclusive "or," unless explicitly indicated to the contrary. In addition, as used herein, "exemplary" or "illustrative" means "serving as an example, instance, or illustration," and should not necessarily be construed as preferred or advantageous over other examples.

[0065] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments are not limitations on the scope of the application unless otherwise specifically indicated. It should also be understood that the drawings are not necessarily drawn to scale and that the dimensions of the various parts can be exaggerated or reduced for the sake of clarity. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. Any reference to claim elements in the singular, for example, using the articles "one" or "said," can mean one or more than one, unless otherwise indicated. All examples shown and discussed herein are intended to be illustrative of the exemplary embodiments and not restrictive of the application. Thus, other examples of the exemplary embodiments can have different values. It is noted that like numbers and letters on the attached drawings represent like parts throughout the several views, and thus, further discussion of the same will not be repeated.

Claims

1. A method for sealing bolt holes in external walls, characterized in that, The construction equipment includes: a pressure sensor (1), a data acquisition instrument (2), a semi-transparent fixed sealing plate (3), a plastering size limiter (4), and a digital display pressure grouting gun (5). The pressure sensor (1) includes a base (6), a pressure sensor (7), a spring pressure assembly (9), and a detachable probe (10). The pressure sensor (7) is embedded in the base (6). A flange ring (8) is installed on the outside of the base (6). The spring pressure assembly (9) is provided at the end of the base (6). The detachable probe (10) is connected to the upper part of the spring pressure assembly (9). A measuring scale (40) is provided on the digital display pressure grouting gun (5). The construction method steps include: S1. Connect the data acquisition instrument (2) to the pressure sensor (1) using the data transmission line. The operator places the pressure sensor (1) into the screw hole and selects a suitable detachable probe (10) according to the hole diameter and probes it into the hole. S2. Grouting is performed by a digital pressure grouting gun (5). The grout is injected from outside the screw hole. By using a digital pressure grouting gun (5), the grout injection volume and the grouting pressure inside the gun can be clearly defined. The grouting is judged to be qualified by the grouting pressure inside the gun. S3. The mortar is squeezed into the hole and the detachable probe (10) is squeezed. The spring pressure assembly (9) is pressed and rebounds. The actual pressure value is measured by the pressure sensor (7). The measured pressure value is transmitted to the data acquisition instrument (2) and displayed by the pressure sensor (1). S4. During the grouting process, the pressure in the digital display pressure grouting gun (5) changes with the grouting situation. When the grouting qualification is judged by the pressure sensor (1) and the data acquisition instrument (2), the digital display pressure grouting gun (5) displays the pressure value synchronously. It can also clearly show the pressure inside the gun after the screw hole grouting is qualified, and the grouting volume can be clearly shown by the measuring scale (40). S5. After the grouting is qualified, remove the pressure sensor (1) and use the semi-transparent fixed sealing plate (3) to seal it. The standard pressure value displayed by the digital pressure grouting gun (5) is the qualified pressure value. S6. After the grouting is completed and the inspection is qualified, the operator will put the plastering size limiter (4) on the side of the external wall bolt hole that needs to be sealed with mortar and perform plastering within the fixed size to ensure that the external wall plastering size meets the unified standard.

2. The method for sealing external wall bolt holes according to claim 1, characterized in that, In step S1, the data acquisition instrument (2) includes internal electronic components and a control cabinet shell (12). The front panel of the data acquisition instrument (2) is provided with a dual five-digit display screen (13), a first function button (14), a second function button (15), a third function button (16), a fourth function button (17), a first output indicator light (18), a second output indicator light (19), a third output indicator light (20), and a fourth peak indicator light (21). The data acquisition instrument (2) has square ventilation openings (28) evenly arranged on its top plate and sides. The data acquisition instrument (2) has quick-release pressure plates (29) on both sides. The data acquisition instrument (2) has internal electronic components.

3. The method for sealing external wall bolt holes according to claim 2, characterized in that, The data acquisition instrument (2) has ports on its back panel, including a transmitter output port (22), a sensor port (23), an external zeroing port (24), an RS485 transmission port (25), a 220V power supply port (26), and an output port (27). Each port is composed of a fastening nut (30), a metal washer (31) and a metal pad (32), and plastic insulating baffles (33) are provided on both sides of the port.

4. The method for sealing external wall bolt holes according to claim 1, characterized in that, In step S2, the digital display pressure grouting gun (5) includes a grouting nozzle (38), a transparent grouting sleeve (39), a measuring scale (40), a rubber plug (41), an internal pressure sensor (42), an internal base (43), a push rod (44), a handle (45), a digital display (46), a wire groove (47), an internal data connection cable (48), and a battery box (49). The measuring scale (40) is engraved on the surface of the transparent grouting sleeve (39), and the digital display (46) is powered by the battery box (49).

5. The method for sealing external wall bolt holes according to claim 4, characterized in that, When using the digital pressure grouting gun (5), the grouting material is injected after opening the grouting nozzle (38), the grouting nozzle (38) is tightened, and the grouting is squeezed downward by the push rod (44) connected to the rubber plug (41). The grouting volume is determined by the measuring scale (40) on the transparent grouting sleeve (39), and the grouting pressure is displayed by the digital display (46).

6. The method for sealing external wall bolt holes according to claim 5, characterized in that, When the slurry is squeezed and injected, the pressure is transmitted through the rubber plug (41) to the gun pressure sensor (42) connected to the gun base (43), and then transmitted through the gun data connection line (48) and reflected on the digital display (46). The standard grouting pressure of the digital display pressure grouting gun (5) is calculated and defined by the qualified grouting pressure collected by the data acquisition instrument (2) through the pressure sensor (1).

7. The method for sealing bolt holes in external walls according to claim 1, characterized in that, In step S5, the semi-transparent fixing sealing piece (3) is composed of a plastic inner ring (34) and a plastic gasket (35) and is effectively connected. The outer diameter of the plastic inner ring (34) is 0-1mm smaller than the inner diameter of the screw hole in the outer wall, and the diameter of the plastic gasket (35) is 3-5mm larger than the plastic inner ring (34). The semi-transparent fixing sealing plate (3) allows for direct observation of the mortar flow state inside the bolt hole of the external wall, and judgment of whether the grouting is full.

8. The method for sealing bolt holes in external walls according to claim 7, characterized in that, In step S5, when grouting in batches, a semi-transparent fixed sealing plate (3) can be used to seal the inside of the screw hole first. The operator uses a digital display pressure grouting gun (5) on the outside of the screw hole to grout according to the qualified pressure value. Grouting is stopped after the pressure value inside the gun reaches the standard. The state of the grout can be observed through the semi-transparent fixed sealing plate (3) during grouting.

9. The method for sealing bolt holes in external walls according to claim 1, characterized in that, In step S6, the plastering size limiter (4) is composed of an internally perforated metal plate (36) and a metal handle (37). The inner diameter of the hole in the internally perforated metal plate (36) is equal to the plastering size required outside the bolt hole on the outer wall. The metal handle (37) is bent upward at 45° along one end of the internally perforated metal plate (36) and fixed.

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