Outer wall screw hole blocking construction method

Abstract

The invention relates to the technical field of building repair, in particular to an outer wall screw hole blocking construction method which comprises the steps that a data acquisition instrument is connected with a pressure sensor through a data transmission line, and the pressure sensor is placed in a screw hole; grouting is conducted through a pressure grouting gun; mortar extrudes the detachable probing component in the hole, the actual pressure value is measured through the pressure sensor, in the grouting process, the pressure in the digital display pressure grouting gun changes along with the grouting condition, the pressure in the gun after qualified grouting of the screw hole can be determined, after the grouting is qualified, a semitransparent fixed plugging piece is used for plugging, and after the inspection is qualified, the pressure in the gun can be determined. An operator sleeves the plastering size limiter to the side, needing to be blocked by mortar, of the screw hole of the outer wall, and plastering is conducted; by analyzing the pressure test value, the external wall screw hole plugging condition in a certain time period is visually known, standardized construction is carried out, the plastering size limiter can form a round plastering face of a standard style, and standardized construction is carried out.

Description

Technical Field

[0001] The invention relates to the technical field of building repair, and in particular to a construction method for sealing screw holes in an external wall. Background Art

[0002] Due to the limitations of workers' craftsmanship and raw materials, there are problems such as inadequate mortar grouting and loose sealing during the sealing process of the external wall screw holes. Therefore, how to improve the sealing quality of the external wall screw holes, conduct rapid testing to determine whether they are qualified, and improve the visual quality of the external plastering of the screw holes to meet the project quality requirements has become an issue that needs to be further studied in engineering construction. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a construction method for plugging screw holes in an exterior wall.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A method for plugging a screw hole in an external wall, the construction equipment comprising: a pressure sensor, a data acquisition instrument, a translucent fixed plugging sheet, a plastering size limiter and a digital pressure grouting gun, the pressure sensor comprising a pressure sensor, a spring pressure assembly and a detachable probe component, the digital pressure grouting gun being provided with a measuring scale; The construction method steps include: S1. Use a data transmission line to connect the data acquisition instrument to the pressure sensor. The operator places the pressure sensor into the screw hole, selects a suitable detachable probe component according to the hole diameter, and probes into the hole; S2. Grouting is performed through a pressure grouting gun. The grouting slurry is injected from the outside of the screw hole. If a digital pressure grouting gun is used, the slurry injection volume and the grouting pressure in the gun can also be clearly determined. The grouting pressure in the gun can be used to determine whether the grouting is qualified; S3, the mortar squeezes the detachable probe component in the hole, the spring pressure component rebounds under pressure, and the actual pressure value is measured by the pressure sensor, and the measured pressure value is transmitted to the data acquisition instrument through the pressure sensor and displayed; S4. During the grouting process, the pressure in the digital pressure grouting gun changes with the grouting situation. When the grouting qualification is judged by the pressure sensor and the data acquisition instrument, the digital pressure grouting gun synchronously displays the pressure value, and can clearly indicate the pressure in the gun after the screw hole grouting is qualified, and can clearly indicate the grouting volume through the measuring scale; S5. After the grouting is qualified, remove the pressure sensor and use a translucent fixed plugging piece for plugging. The standard pressure value displayed by the digital pressure grouting gun is the qualified pressure value; S6. After the grouting is completed and passed the inspection, the operator will put the plastering size limiter on the side of the external wall screw hole that needs to be sealed with mortar, and plaster within the fixed size to ensure that the external wall plastering dimensions meet the unified standards.

[0005] Preferably, in step S1, the pressure sensor includes 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 component is connected to the upper part of the spring pressure assembly.

[0006] Preferably, in step S1, the data acquisition instrument includes internal electronic components and a control cabinet housing, and the front panel of the data acquisition instrument is provided with a dual five-digit display screen, a first function button, a second function button, a third function button, a fourth function button, a first output display light, a second output display light, a third output display light and a fourth peak value display light; The top plate and the side of the data acquisition instrument are evenly arranged with square vents, both sides of the data acquisition instrument are provided with quick-release pressing pieces, and the data acquisition instrument is provided with internal electronic components.

[0007] Preferably, the back panel of the data acquisition instrument is provided with ports, which include a transmission output port, a sensor port, an external reset port, an RS485 transmission port, a 220V power port and an output port; The ports are composed of a fastening nut, a metal gasket and a metal backing plate, and plastic insulating baffles are arranged on both sides of the ports.

[0008] Preferably, in step S2, the digital pressure grouting gun includes a grouting nozzle, a transparent grouting sleeve, a measuring scale, a rubber plug, a pressure sensor inside the gun, a base inside the gun, a push rod, a handle, a digital display, a wire groove, a data connection line inside the gun and a battery box, the measuring scale is engraved on the surface of the transparent grouting sleeve, and the digital display is powered by the battery box.

[0009] Preferably, when the digital pressure grouting gun is used, the grouting material is poured in after opening the grouting nozzle, and the grouting nozzle is tightened, and the grouting is squeezed downward by a push rod connected to the rubber plug. The grouting volume is clearly determined by the measuring scale on the transparent grouting sleeve, and the grouting pressure is displayed by a digital display.

[0010] Preferably, when the slurry is squeezed and injected, the pressure is transmitted to the pressure sensor in the gun connected to the base in the gun through the rubber plug, and is reflected on the digital display after being transmitted through the data connection line in the gun; The standard grouting pressure of the digital display pressure grouting gun is defined by calculating the qualified grouting pressure collected by the data acquisition instrument through the pressure sensor.

[0011] Preferably, in step S5, the translucent fixed plugging piece is composed of a plastic inner ring and a plastic gasket, which are effectively connected, the outer diameter of the plastic inner ring is 0-1 mm smaller than the inner diameter of the screw hole in the outer wall, and the diameter of the plastic gasket is 3-5 mm larger than the plastic inner ring; The translucent fixed sealing piece can be used to visually observe the mortar flow state in the screw hole of the external wall and judge whether the grouting is full.

[0012] Preferably, in step S5, during batch grouting, a translucent sealing sheet may be used to seal the inside of the screw hole first, and the operator uses a digital pressure grouting gun to perform grouting on the outside of the screw hole according to a qualified pressure value, and stops grouting after the pressure value in the gun reaches the standard. During grouting, the state of the slurry can be observed through the translucent sealing sheet.

[0013] Preferably, in step S6, the plaster size limiter consists of an inner perforated metal plate and a metal handle, the inner diameter of the hole in the inner perforated metal plate is equal to the plastering size required on the outside of the external wall screw hole, and the metal handle is bent upward at 45° along the plane of one end of the inner perforated metal plate and fixed.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The operator pushes the detachable probe part on the upper part of the pressure sensor through the external grouting of the screw hole, driving the spring pressure component to transmit pressure to the pressure sensor. The pressure value is displayed by the data acquisition instrument to obtain the grouting pressure value. The grouting is judged by the pressure value, which provides the operator with a basis for judging whether the plugging of the screw hole in the external wall is qualified. During the operation, only the pressure sensor needs to be probed into the hole for pressure testing, and after the pressure test is completed, a translucent plugging piece is used for plugging. The operation is simple, fast and easy to use. 2. The pressure test value can be transmitted to the computer through the transmission port for analysis, so that the sealing status of the external wall screw holes in a certain period of time can be intuitively understood, making it easy to carry out standardized construction; 3. The translucent fixed plugging piece can directly observe the mortar injection situation; 4. The plastering size limiter can form a standard circular plastering surface, which facilitates the operator to perform standardized construction of the plastering on the outside of the screw hole; 5. The digital pressure grouting gun can clearly indicate the slurry injection volume and the grouting pressure in the gun, and judge whether the grouting is qualified by the grouting pressure in the gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A work flow chart of a construction method for plugging screw holes in an external wall proposed by the present invention; Figure 2 A schematic diagram of the structure of a pressure sensor involved in a construction method for plugging screw holes in an external wall proposed by the present invention; Figure 3A three-dimensional structural schematic diagram of a data acquisition instrument involved in a construction method for plugging screw holes in an external wall proposed by the present invention; Figure 4 A rear view structural schematic diagram of a data acquisition instrument involved in a construction method for plugging screw holes in an external wall proposed by the present invention; Figure 5 A schematic diagram of the three-dimensional structure of a translucent fixed plugging piece involved in a construction method for plugging a screw hole in an external wall proposed by the present invention; Figure 6 A schematic diagram of the three-dimensional structure of a plastering size limiter involved in a construction method for plugging screw holes in an external wall proposed by the present invention; Figure 7 The present invention provides a schematic structural diagram of a digital display pressure grouting gun involved in a construction method for plugging screw holes in an exterior wall.

[0016] In the figure: 1. Pressure sensor; 2. Data acquisition instrument; 3. Translucent fixed sealing piece; 4. Plastering size limiter; 5. Digital pressure grouting gun; 6. Base; 7. Pressure sensor; 8. Flange ring; 9. Spring pressure assembly; 10. Removable probe component; 12. Control cabinet housing; 13. Double five-digit display; 14. First function button; 15. Second function button; 16. Third function button; 17. Fourth function button; 18. First output display light; 19. Second output display light; 20. Third output display light; 21. Fourth peak display light; 22. Transmitter output port; 23. Sensor port; 24. External reset port; 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, inner perforated metal plate; 37, metal handle; 38, grouting nozzle; 39, transparent grouting sleeve; 40, measuring scale; 41, rubber plug; 42, pressure sensor inside the gun; 43, base inside the gun; 44, push rod; 45, handle; 46, digital display; 47, wire slot; 48, data connection line inside the gun; 49, battery box. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Reference Figure 1-7 , a method for plugging a screw hole in an external wall, the equipment involved includes a pressure sensor 1, a data acquisition instrument 2, a translucent plugging gasket 3, a plastering size limiter 4, and a digital display pressure grouting gun 5; like Figure 2 As shown, the pressure sensor 1 has a base 6 at the bottom, a pressure sensor 7 on the top, 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 component 10; The pressure sensor 7 is embedded in the base 6, and a flange ring 8 is provided on it, which is larger than the diameter of the screw hole. When in use, the spring pressure assembly 9 on the flange ring 8 and the detachable probe component 10 are extended into the screw hole, wherein the outer diameter of the detachable probe component 10 is equal to the inner diameter of the screw hole. If the screw hole changes in diameter, the detachable probe component 10 can be disassembled and replaced; When the screw hole of the external wall is blocked, the grouting slurry is injected from the outside of the screw hole, the mortar squeezes the detachable probe part 10 in the hole, the spring pressure component 9 rebounds under pressure, and the actual pressure value is measured by the pressure sensor 7, connected to the data acquisition instrument 1 through the data transmission line, and processed by the internal electronic component 11 for data transmission; like Figure 3 , Figure 4 As shown, the data acquisition instrument 2 contains internal electronic components, and the outer shell is evenly provided with square vents 28, which are symmetrically distributed along the data acquisition instrument 2, and quick-release pressing pieces 29 are provided on both sides. The front 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 light 18, a second output display light 19, a third output display light 20 and a fourth peak display light 21, and the back panel is provided with a transmission output port 22, a sensor port 23, an external reset port 24, an RS485 transmission port 25, a 220V power port 26, and an output port 27; each port is composed of a fastening nut 30, a metal gasket 31 and a metal pad 32, and plastic insulating baffles 33 are provided on both sides; The main screen of the dual five-digit display 13 displays the net pressure value, and the sub-screen displays the setting parameters, total pressure value, peak value, and unit; The first function button 14 is initially set to enter the menu and return to the previous level; the second function button 15 is initially set to enter the calibration interface, and long press to enter the zeroing option; the third function button 16 is initially set to change the color light and increase the value; the fourth function button 17 menu interface is the confirmation menu, and the display interface is to switch the second window display; The first output indicator light 18, the second output indicator light 19, and the third output indicator light 20 are on for relay triggering status, and off for untriggered status; The sensor port 23 on the back of the data acquisition instrument 2 is connected to the pressure sensor 1 through a data transmission line for transmission. In the ballast calibration mode, the positive and negative of the sensor signal can be ignored and can be directly calibrated to a positive value; The RS485 transmission port 25 is connected to an external computer device through an adapter cable for data transmission; the 220V power port 26 is connected to a power source through a power line for power supply; the output port 27 is a relay alarm output terminal, and the interval output can be set; like Figure 5 As shown, the translucent fixed plugging 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 screw hole in the outer wall by 1 mm, and the diameter of the plastic gasket 35 is larger than that of the plastic inner ring 34, and the size difference is 3 mm to 5 mm. After the pressure sensor 1 passes the pressure test, the translucent fixed blocking piece 3 is pressed in for blocking.

[0019] like Figure 6 As shown, the plastering size limiter 4 is composed of an inner holed metal plate 36 and a metal handle 37. The inner holed metal plate 36 is a metal patch. The inner diameter of the hole in the inner holed metal plate 36 is equal to the plastering size required on the outside of the screw hole in the exterior wall. The metal handle 37 is bent upward at 45 degrees along the plane of one end of the inner holed metal plate 36. The inner holed metal plate 36 and the metal handle 37 can be fixed by welding or riveting.

[0020] like Figure 7 As shown, the digital pressure grouting gun 5 is composed of a grouting nozzle 38, a transparent grouting sleeve 39, a measuring scale 40, a rubber plug 41, a pressure sensor 42, a base 43, a push rod 44, a handle 45, a digital display 46, a wire slot 47, a data connection line 48, and a battery box 49, wherein 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; When the digital pressure grouting gun 5 is used, the grouting material is poured in after the grouting nozzle 38 is opened, 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 clear through the measuring scale 40 on the transparent grouting sleeve 39, and the grouting pressure is displayed through the digital display 46; When the slurry is squeezed and injected, the pressure is transmitted to the gun pressure sensor 42 connected to the gun base 43 through the rubber plug 41, 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 defined by calculating the qualified grouting pressure collected by the data acquisition instrument 2 through the pressure sensor 1.

[0021] The principle of the embodiment of the present application: In the initial state, the power is connected through the 220V power port 26, and the data acquisition instrument 2 is connected to the pressure sensor 1 through the sensor port 23 using a data transmission line. The operator places the pressure sensor 1 in the screw hole, selects a suitable probe component 10 according to the hole diameter and probes into the hole, and performs grouting through the digital pressure grouting gun 5. The grouting slurry is injected from the outside of the screw hole, and the mortar squeezes the detachable probe component 10 in the hole. The spring pressure component 9 rebounds under pressure, and 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. It can be connected to the computer through the RS485 transmission port 25 using a data conversion line for data analysis. In normal use, there is no need to analyze the data through a computer. The measured pressure value is displayed in real time through the double five-digit display screen 13 on the front of the data acquisition instrument 2, and the pressure value is used to determine whether to stop grouting.

[0022] During the grouting process, the pressure in the digital pressure grouting gun 5 changes with the grouting situation. When the grouting qualification is determined by the pressure sensor 1 and the data acquisition instrument 2, the digital pressure grouting gun 5 synchronously displays the pressure value, and can clearly indicate the pressure in the gun after the screw hole grouting is qualified, and can clearly indicate the grouting volume through the measuring scale 40. After the grouting is qualified, the pressure sensor 1 is removed and the translucent fixed plugging piece 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.

[0023] During batch grouting, the inside of the screw hole can be sealed with a translucent sealing piece 3 first. The operator uses a digital pressure grouting gun 5 on the outside of the screw hole to perform grouting according to the qualified pressure value. The grouting is stopped after the pressure value in the gun reaches the standard. The slurry state can be observed through the translucent sealing piece 3 during grouting.

[0024] The translucent fixed plugging piece 3 can be used to visually observe the flow state of the mortar in the screw hole of the external wall to determine whether the grouting is full.

[0025] After the grouting is completed and passed the inspection, the operator will put 4 sets of plastering size limiters on the side of the exterior wall screw hole that needs to be sealed with mortar, and plaster within the fixed size to ensure that the exterior wall plastering dimensions meet unified standards.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

Claims

1. A method for sealing screw holes in an external wall, characterized in that: The construction equipment comprises: a pressure sensor (1), a data acquisition instrument (2), a translucent fixed plugging plate (3), a plastering size limiter (4) and a digital display pressure grouting gun (5), wherein the pressure sensor (1) comprises a pressure sensor (7), a spring pressure assembly (9) and a detachable probe component (10), and the digital display pressure grouting gun (5) is provided with a measuring scale (40); The construction method steps include: S1. Use a data transmission line to connect the data acquisition instrument (2) to the pressure sensor (1). The operator places the pressure sensor (1) into the hole of the screw, selects a suitable detachable probe component (10) according to the diameter of the hole, and probes into the hole; S2. Grouting is performed using a pressure grouting gun. The grouting slurry is injected from the outside of the screw hole. If a digital pressure grouting gun (5) is used, the slurry injection volume and the grouting pressure in the gun can be clearly determined. Whether the grouting is qualified can be judged by the grouting pressure in the gun; S3, the mortar presses the detachable probe component (10) in the hole, the spring pressure component (9) rebounds under pressure, and the actual pressure value is measured by the pressure sensor (7), and the measured pressure value is transmitted to the data acquisition instrument (2) through the pressure sensor (1) and displayed; S4. During the grouting process, the pressure in the digital pressure grouting gun (5) changes with the grouting situation. When the grouting qualification is determined by the pressure sensor (1) and the data acquisition instrument (2), the digital pressure grouting gun (5) synchronously displays the pressure value, and can clearly indicate the pressure in the gun after the screw hole grouting is qualified, and can clearly indicate the grouting volume through the measuring scale (40); S5. After the grouting is qualified, the pressure sensor (1) is removed and the semi-transparent fixed plugging piece (3) is used for plugging. 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 puts the plastering size limiter (4) on the side of the external wall screw hole that needs to be sealed with mortar, and plasters within the fixed size to ensure that the external wall plastering size meets the unified standard.

2. A method for plugging screw holes in an exterior wall according to claim 1, characterized in that: In step S1, the pressure sensor (1) comprises a base (6) and a pressure sensor (7), wherein the pressure sensor (7) is embedded in the base (6), a flange ring (8) is installed on the outer side of the base (6), a spring pressure assembly (9) is provided at the end of the base (6), and a detachable probe component (10) is connected to the upper part of the spring pressure assembly (9).

3. The method for sealing screw holes in an external wall according to claim 1, characterized in that: In step S1, the data acquisition instrument (2) comprises internal electronic components and a control cabinet housing (12), and 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 display light (18), a second output display light (19), a third output display light (20) and a fourth peak value display light (21); The top plate and the side of the data acquisition instrument (2) are evenly arranged with square vents (28); quick-release pressing pieces (29) are provided on both sides of the data acquisition instrument (2); and internal electronic components are provided inside the data acquisition instrument (2).

4. A method for plugging screw holes in an exterior wall according to claim 3, characterized in that: The data acquisition instrument (2) is provided with ports on the back panel, the ports comprising a transmission output port (22), a sensor port (23), an external reset port (24), an RS485 transmission port (25), a 220V power supply port (26) and an output port (27); The ports are composed of a fastening nut (30), a metal gasket (31) and a metal backing plate (32), and plastic insulating baffles (33) are arranged on both sides of the ports.

5. The method for sealing screw holes in an external wall according to claim 1, characterized in that: In step S2, the digital display pressure grouting gun (5) comprises a grouting nozzle (38), a transparent grouting sleeve (39), a measuring scale (40), a rubber plug (41), a pressure sensor (42) inside the gun, a base (43) inside the gun, a push rod (44), a handle (45), a digital display (46), a wire groove (47), a data connection line (48) inside the gun and a battery box (49), wherein 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).

6. A method for plugging screw holes in an external wall according to claim 5, characterized in that: When the digital display pressure grouting gun (5) is used, the grouting material is poured in after opening the grouting nozzle (38), and the grouting nozzle (38) is tightened. The grouting is squeezed downward by a push rod (44) connected to the rubber plug (41). The grouting volume is clearly indicated by the measuring scale (40) on the transparent grouting sleeve (39), and the grouting pressure is displayed by the digital display (46).

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

8. The method for sealing screw holes in an external wall according to claim 1, characterized in that: In step S5, the translucent fixed plugging piece (3) is composed of a plastic inner ring (34) and a plastic gasket (35), which are effectively connected, the outer diameter of the plastic inner ring (34) is 0 to 1 mm smaller than the inner diameter of the external wall screw hole, and the diameter of the plastic gasket (35) is 3 to 5 mm larger than the plastic inner ring (34); The translucent fixed plugging piece (3) can be used to visually observe the flow state of mortar in the screw hole of the external wall and judge whether the grouting is full.

9. A method for plugging screw holes in an external wall according to claim 8, characterized in that: In the step S5, during batch grouting, the interior of the screw hole may be sealed using a translucent plugging sheet (3), and the operator may use a digital pressure grouting gun (5) to perform grouting on the outside of the screw hole according to a qualified pressure value, and stop grouting after the pressure value in the gun reaches the standard. During grouting, the state of the slurry may be observed through the translucent plugging sheet (3).

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

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