Fabricated wallboard airtightness detection device and gas circuit control structure

Abstract

The invention discloses an assembly type wallboard airtightness detection device and a gas circuit control structure, the assembly type wallboard airtightness detection device comprises a rack device, a lifting mechanism, a power mechanism, a pressing device and a control mechanism, the power mechanism is arranged on the rack device, the power mechanism is in driving connection with the lifting mechanism, the lifting mechanism is arranged on one side of the rack device, and the pressing device is driven by the power mechanism to press the lifting mechanism. The lifting mechanism can slide up and down along the rack device, the pressing device is connected with the lifting mechanism, the pressing device can be adjusted in a lifting mode along with the lifting mechanism, the control mechanism is arranged on the rack device, the control mechanism is connected with the pressing device, the pressing device can be driven to stretch out and draw back relative to a wallboard, and the pressing device is controlled to be tightly attached to an area to be detected. And the to-be-detected area is ensured to form a closed space and gas is conveyed to the to-be-detected area for airtightness detection. According to the device, through double-gas-path control, quantitative evaluation of the local sealing performance of the abutted seam is achieved, key area detection can be conducted in the wallboard installation stage, and problems can be found in advance and rectification is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of architectural engineering technology, and in particular to a detection device and an air path control structure suitable for on-site air tightness testing of assembled wall panel joints. Background Art

[0002] Against the backdrop of global advocacy for energy conservation and emission reduction, and the promotion of green transformation in the construction industry, ultra-low energy buildings, with their significant energy-saving and environmentally friendly features, have become a key development direction in the construction sector. Ultra-low energy buildings have extremely high requirements for airtightness. Good airtightness can effectively reduce the unorganized infiltration of air inside and outside the building, reducing energy losses caused by ventilation, thereby significantly improving the building's energy efficiency and achieving low-carbon and environmentally friendly building operations. According to statistics, insufficient building airtightness can lead to a 15%-30% increase in building energy consumption. Therefore, accurate and efficient airtightness testing is critical to ensuring that ultra-low energy buildings meet performance standards.

[0003] At present, the airtightness testing of ultra-low energy buildings generally adopts the method of testing on a household basis, and this test is usually carried out after the door and window decoration project is completed. This traditional testing method has obvious disadvantages:

[0004] First, due to the time lag in detection, once an airtightness problem is discovered, the interior decoration of the building has been basically completed, involving rectification work in many aspects such as walls and pipelines. Not only is the rectification difficult, but it also incurs high economic and time costs.

[0005] Secondly, the whole-house inspection method cannot accurately locate weak links in air tightness, and it is difficult to conduct detailed inspections of key parts such as joints and openings of prefabricated wall panels, resulting in blind spots in inspection.

[0006] What is more serious is that there is currently no special equipment and scientific method on the market that can carry out early detection of key areas such as joint openings during the construction process, especially after the installation of prefabricated wall panels and the completion of joint processing. This makes it impossible to discover and solve the building airtightness problem in the early stages of construction, seriously affecting the construction quality and energy-saving effect of ultra-low energy consumption buildings.

[0007] Therefore, the existing methods for building air tightness detection have the technical problem of low construction efficiency due to the above technical problems. It can be seen that there is an urgent need for an air tightness detection method that can improve construction efficiency, which is a problem that needs to be solved in this field. Summary of the Invention

[0008] In order to address the technical problem that the existing building air tightness detection methods have low construction efficiency due to the above-mentioned technical problems, the purpose of the present invention is to provide an air tightness detection device suitable for prefabricated wall panels. Through dual air path control, quantitative evaluation of local sealing of joints can be achieved, and key area detection can be carried out during the wall panel installation stage, so as to facilitate early detection of problems and rectification; on this basis, the present invention also provides an air path control structure suitable for prefabricated wall panel air tightness detection devices, which effectively overcomes the problems existing in the prior art.

[0009] In order to achieve the above-mentioned objectives, the present invention provides an air tightness detection device suitable for assembled wall panels, including a frame device, a lifting mechanism, a power mechanism, a clamping device, and a control mechanism. The power mechanism is arranged on the frame device, and the power mechanism drives and connects the lifting mechanism. The lifting mechanism is arranged on one side of the frame device. Driven by the power mechanism, the lifting mechanism can slide up and down along the frame device. The clamping device is connected to the lifting mechanism, and the clamping device can be raised and lowered following the lifting mechanism. The control mechanism is arranged on the frame device, and the control mechanism is connected to the clamping device, and can drive the clamping device to extend and retract relative to the wall panel, and control the clamping device to fit tightly to the area to be tested, ensuring that the area to be tested forms a closed space and transporting gas to the area to be tested for airtightness detection.

[0010] Furthermore, the rack device includes a cross bar, several vertical bars, a rectangular frame, a bottom fixing plate and a protective side plate. The bottom fixing plate is arranged at the bottom of the rectangular frame, and the protective side plate is arranged on one side of the rectangular frame. The several vertical bars are arranged vertically symmetrically, and the first end is connected to the cross bar, and the other end is respectively connected to the bottom fixing plate and the protective side plate to form the main structure of the air tightness detection device.

[0011] Furthermore, the lifting mechanism includes a sliding assembly, a lifting plate, and a screw assembly. The screw assembly is vertically arranged and connected to the frame device at both ends. The sliding assembly can be slidably arranged on the frame assembly and cooperated with the screw assembly. The screw assembly rotates under the drive of the power mechanism and drives the sliding assembly to slide up and down along the frame assembly. The lifting plate is cooperated with the sliding assembly and can move up and down with the sliding assembly.

[0012] Furthermore, the power mechanism includes a servo motor, a reducer, an idler wheel, and a chain. The servo motor and the reducer are connected to form a power assembly. The servo motor can be changed in speed through the reducer. The idler wheel is connected to the ball screw. The idler wheel is connected to the power assembly through a chain. The idler wheel is driven by the servo motor and the reducer to form a power assembly to drive the lifting mechanism to slide.

[0013] Further, the pressing device comprises a detection plate, a sealing gasket, a gas cylinder, a fixing ring and an optical axis fixing seat, the sealing gasket is arranged around the detection plate, when the detection plate is tightly attached to the to-be-detected area, the to-be-detected area forms a sealed space; the gas cylinder is connected with the optical axis fixing seat, the optical axis fixing seat can guide the forward and backward movement of the gas cylinder; the gas cylinder is connected with the detection plate, the forward and backward movement of the detection plate is controlled by the gas cylinder; the gas cylinder is further provided with the fixing ring, the fixing ring can limit the stroke of the gas cylinder to prevent damage to the equipment due to excessive stroke.

[0014] Further, the control mechanism is arranged on the rack device, and comprises a gas pump, an electric cabinet, a control box, a button box and a pressure gauge; the gas pump is connected with the gas cylinder and the detection plate through two paths respectively, and is used for conveying gas into the gas cylinder and the detection plate respectively; the control box is connected with the servo motor, and is used for controlling the opening and closing of the servo motor, thereby controlling the lifting mechanism and the lifting of the pressing device; the button box is connected with the gas cylinder, and is used for controlling the forward and backward movement of the gas cylinder, thereby controlling the forward and backward movement of the lifting mechanism and the pressing device; the electric cabinet is connected with the button box, the control box and the pressure gauge respectively, and is used for placing a power supply, an air switch, a circuit board and auxiliary electrical equipment; the pressure gauge is connected with the detection plate, and is used for monitoring the gas pressure in the initial stage and the internal gas pressure of the detection plate in the formal monitoring process.

[0015] In order to achieve the above purpose, the application provides a gas path structure suitable for the assembly type wallboard air tightness detection device, which is based on the assembly type wallboard air tightness detection device and comprises a pneumatic three-way joint, a cylinder control gas path and a test gas pressure control gas path.

[0016] Further, the pneumatic three-way joint comprises a filtering assembly, a pressure regulating assembly and a water removal assembly, the gas source is filtered, pressure-regulated and water-removed through the pneumatic three-way joint, and then is conveyed to the cylinder control gas path and the test gas pressure control gas path.

[0017] Further, the cylinder control gas path comprises a first silencer, a two-position five-way electromagnetic valve and a speed regulating valve, the output end of the pneumatic three-way joint is connected with the first silencer, the first silencer is arranged at two working ports of the two-position five-way electromagnetic valve respectively, and is used for exhausting the gas path, and the two outlets of the two-position five-way electromagnetic valve are respectively provided with the speed regulating valves for speed regulation.

[0018] When in the default state, the two-position five-way electromagnetic valve working module is located at the right side, and the gas cylinder is in the unpushed state; the gas path exhausts through the first silencer, and the gas cylinder is kept stationary.

[0019] When the action is performed, the two-position five-way electromagnetic valve working module switches to the left side, compressed air enters the push chamber of the cylinder, drives the deep cylinder, and drives the detection plate to press against the wall surface, at this time the sealing gasket is tightly attached to the wall surface to form a sealed space.

[0020] Further, the test air pressure control air path includes a pressure regulating valve, a second muffler, a three-position electromagnetic valve, and a digital pressure gauge valve, the output end of the pneumatic three-way joint is connected with the three-position electromagnetic valve, the pressure regulating valve is used for pre-setting the air pressure output by the air pump, the second muffler is arranged at two working ports of the three-position electromagnetic valve, and is used for exhausting the air pressure entering the three-position electromagnetic valve, and the digital pressure gauge valve is arranged at the outlet end of the three-position electromagnetic valve, and is used for displaying the air pressure input into the cavity of the detection plate in real time.

[0021] When in the default state: the three-position electromagnetic valve is in the middle position, the air path is disconnected, the digital pressure gauge valve displays 0, and the pressure regulating valve is pre-set with the required test air pressure.

[0022] When in the test phase: after the detection plate is pressed against the wall surface, the three-position electromagnetic valve working module moves to the left, the air path is connected, the regulated air enters the cavity of the detection plate, and the digital pressure gauge valve displays the current air pressure in real time.

[0023] When in the pressure maintaining test phase: the three-position electromagnetic valve working module moves back to the middle position, the air path is closed, the system enters the pressure maintaining state, at this time the cavity of the detection plate is disconnected with the air source, and the pressure is maintained only by the sealing property; if the wall plate joint sealing property is poor, the pressure will rapidly decrease; if the air tightness is good, the pressure is stable.

[0024] When the test is completed, the cylinder is retracted, the detection plate leaves the wall surface, the cavity is connected with the atmosphere, and the air pressure is naturally released.

[0025] The device can directly detect the air tightness of the assembly type wall plate joint opening and other key areas on the external scaffold after the shear wall is installed and the joint treatment is completed. BRIEF DESCRIPTION OF DRAWINGS

[0026] The application will be further described in combination with the drawings and specific embodiments.

[0027] Figure 1 FIG. 1 is a structural schematic view of a rack device in the assembly type wall plate air tightness detection device;

[0028] Figure 2 FIG. 2 is a structural schematic view of a lifting mechanism in the assembly type wall plate air tightness detection device.

[0029] Figure 3 It is a structure schematic view suitable for the pressing device in the air tightness detection device of the assembled wallboard;

[0030] Figure 4 It is a structure schematic view of the control mechanism suitable for the air tightness detection device of the assembled wallboard;

[0031] Figure 5 It is an air path control structure schematic view suitable for the air tightness detection device of the assembled wallboard.

[0032] The following is the component labeling explanation in the drawing:

[0033] 1. rack device 2. lifting mechanism 3. power mechanism 4. pressing device 5. control mechanism

[0034] 11. cross bar 12. vertical rod 13. rectangular frame 14. bottom fixed plate 15. protective side plate 21. linear guide rail 22. ball screw 23. screw nut 24. lifting plate 25. linear guide rail slider 26. ball screw support 27. limiting assembly 31. servo motor 32. speed reducer 33. idler 34. chain 41. detection plate 42. sealing gasket 43. air cylinder 44. fixed ring 45. optical shaft fixed seat 51. air pump 52. electric cabinet 53. control box 54. button box 55. pressure gauge

[0035] 61. pneumatic three-way piece 62. first silencer 63. two-position five-way electromagnetic valve 64. speed regulating valve 65. pressure regulating valve 66. second silencer 67. three-position electromagnetic valve 68. digital display pressure valve. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific drawings.

[0037] In view of the technical problems of the existing building air tightness detection method, the present application provides an air tightness detection device suitable for assembled wallboard, which realizes local joint sealing quantitative evaluation through double air path control, and can detect key areas during wallboard installation stage, so as to facilitate early problem discovery and rectification. On this basis, the present application also provides an air path control structure suitable for the air tightness detection device of the assembled wallboard, which effectively overcomes the problems existing in the prior art.

[0038] The air tightness detection device suitable for assembled wallboard provided by the present application comprises a rack device 1, a lifting mechanism 2, a power mechanism 3, a pressing device 4 and a control mechanism 5.

[0039] Referring to Figure 1The rack device 1 includes a horizontal bar 11, a plurality of vertical bars 12, a rectangular frame 13, a bottom fixing plate 14 and a protective side plate 15.

[0040] The rectangular frame 13 is composed of a plurality of short horizontal bars and short vertical bars. The bottom fixing plate 14 is arranged at the bottom of the rectangular frame 13 , and the protective side plate 15 is arranged on one side of the rectangular frame 13 .

[0041] The four corners of the bottom fixing plate 14 are respectively provided with connection holes for fixing the rack device 1. The distribution of the connection holes on the bottom fixing plate 14 is not limited in this solution and can be determined according to the on-site connection requirements.

[0042] A plurality of vertical rods 12 are vertically symmetrically arranged, with a first end connected to the horizontal rod 11 and the other end connected to the bottom fixing plate 14 and the protective side plate 15 respectively, forming the main structure of the air tightness detection device.

[0043] The lifting mechanism 2 is arranged on one side of the frame device 1, and cooperates with the power mechanism 3 and the clamping device 4 respectively. The power mechanism 3 can drive the lifting mechanism 2 to rise and fall, and then drive the clamping device 4 to perform vertical adjustment, thereby realizing the vertical adjustment of the clamping device 4, thereby avoiding interference from scaffolding, back ribs, etc. during construction, and accurately positioning the detection area.

[0044] The lifting mechanism 2 is used to adjust the pressing device 4 vertically. Figure 2 , which includes a sliding assembly, a lifting plate, a screw assembly and a limit assembly.

[0045] The screw assembly includes a ball screw 22 and a ball screw support seat 26 . The ball screw support seats 26 are respectively arranged at both ends of the middle vertical rod 12 of the frame device 1 , and both ends of the ball screw 22 are respectively connected to the ball screw support seats 26 .

[0046] The bottom of the ball screw 22 cooperates with the power mechanism 3, and the power mechanism 3 drives the screw assembly to convert the rotary motion into linear motion. The structure and working principle of the ball screw 22 are well known to those skilled in the art and will not be described in detail here.

[0047] The sliding assembly includes a linear guide rail 21 and a linear guide rail slider 25. The linear guide rails 21 are respectively arranged on the vertical rods 12 on both sides of the rack device 1. The linear guide rail slider 25 is adapted to the linear guide rail 21 and can slide up and down along the linear guide rail 21.

[0048] A connecting block is provided between the two linear guide sliders 25, and a groove is provided at the bottom of the connecting block for embedding the nut on the ball screw 22 into the groove for connection. As a result, when the ball screw 22 rotates, it can drive the linear guide slider 25 to slide up and down along the linear guide rail 21.

[0049] The lifting plate 24 is provided with a plurality of connecting holes, and is connected with the sliding assemblies on both sides and the connecting blocks through the cooperating lead screw nut 23, can slide up and down along with the sliding assemblies, so as to control the lifting of the lifting plate 24.

[0050] The limiting assembly 27 is arranged in the middle of the top horizontal rod 11 of the rack device, for limiting the lifting height of the lifting plate 24, avoiding the lifting plate 24 from being separated from the linear guide rail 21.

[0051] The power mechanism 3 drives the connecting lead screw assembly, for providing driving force for the rotation of the lead screw assembly, see Figure 1 and Figure 2 The power mechanism 3 includes a servo motor 31, a speed reducer 32, an idler 33 and a chain 34.

[0052] The servo motor 31 is connected with the speed reducer 32 to form a power assembly, and is arranged on the bottom fixed plate 14, and the servo motor 31 can be speeded up or slowed down through the speed reducer 32, wherein the idler 33 is connected with the ball screw 22, the idler 33 is connected with the power assembly through the chain 34, and the power assembly formed by the cooperation of the servo motor 31 and the speed reducer 32 drives the idler 33 to drive the ball screw 22 to rotate.

[0053] Referring to Figure 3 The pressing device 4 includes a detection plate 41, a sealing gasket 42, a pneumatic cylinder 43, a fixed ring 44 and an optical axis fixing seat 45, and the detection plate 41 is tightly attached to the to-be-measured area through the pushing of the pneumatic cylinder 43, so that the to-be-measured area forms a sealed space.

[0054] The sealing gasket 42 is arranged around the detection plate 41, and when the detection plate 41 is tightly attached to the to-be-measured area, the to-be-measured area forms a sealed space.

[0055] The pneumatic cylinder 43 is connected with the optical axis fixing seat 45, and the optical axis fixing seat 45 can guide the forward and backward movement of the pneumatic cylinder 43.

[0056] The pneumatic cylinder 43 is connected with the detection plate 41, and the forward and backward movement of the detection plate 41 is controlled by the pushing of the pneumatic cylinder 43. The pneumatic cylinder 43 is further provided with the fixed ring 44, and the fixed ring 44 can limit the stroke of the pneumatic cylinder 43 to prevent damage to the equipment due to excessive stroke.

[0057] Referring to Figure 4 The control mechanism 5 includes a gas pump 51, an electric cabinet 52, a control box 53, a button box 54 and a pressure gauge 55. The electric cabinet 52 is arranged on one side of the rack assembly 1.

[0058] The air pump 51 is arranged outside the rack device 1, and is connected with the air cylinder 43 and the detection plate 41 respectively through two paths, for conveying air into the air cylinder 43 and the detection plate 41 respectively, when the air in the air pump 51 is conveyed into the air cylinder 43, the air cylinder 43 pushes the detection plate 41 to tightly adhere to the area to be detected, when the detection plate 41 is pressed against the wall surface, the air in the air pump 51 is conveyed into the cavity of the detection plate 41 after pressure regulation, and the wall plate is subjected to air tightness detection.

[0059] The control box 53 is arranged on the rack device 1, and is connected with the servo motor 31, for controlling the opening and closing of the servo motor 31, and further controlling the lifting of the lifting plate 24 and the detection plate 41.

[0060] The button box 54 is arranged on the rack device 1, and is connected with the air cylinder 43, for controlling the forward and backward movement of the air cylinder 43, and further controlling the forward and backward movement of the lifting plate 24 and the detection plate 41.

[0061] The electric cabinet 52 is arranged on the rack device 1, and is connected with the button box 54, the control box 53 and the pressure gauge 55 respectively, for placing power supply, air switch, circuit board and auxiliary electrical equipment.

[0062] The pressure gauge 55 is arranged on the rack device 1, and is connected with the electromagnetic valve and the detection plate 41, for monitoring the air pressure in the initial stage and the air pressure in the detection plate 41 in the formal monitoring process.

[0063] The air tightness detection device for the assembled wall plate composed of the above scheme has the following specific use process:

[0064] Preparation stage. First, clean the surface of the assembled wall plate to ensure that the detection surface is free of dust, oil stains and other impurities, so as to ensure the accuracy of the detection result.

[0065] Air tightness calibration. The air tightness of the smooth and defect-free plate surface of the assembled wall plate is tested, and the pressure curve and the air leakage curve are monitored and recorded, and the test result is taken as the calibration curve.

[0066] Installation of detection device. The detection device is installed at the to-be-detected part of the wall joint according to the design requirements, and the sealing gasket should be well adhered to the wall surface during installation to avoid air bubbles or gaps.

[0067] Pressure test. The pressure test is carried out by filling a certain pressure of air into the detection device, and the pressure curve and the air leakage curve are monitored.

[0068] Data Collection and Analysis: During the test, the pressure gauge in the detection device collects real-time pressure change data, which is processed by the data acquisition system. The test results are compared with the calibration curve, and the two are interpolated to determine whether the wall is properly sealed. If the pressure drops too quickly or fluctuates abnormally, it may indicate a leak in the wall.

[0069] Follow-up treatment and maintenance. If the test results show that the wall is not sealed properly, repairs should be carried out according to the test results. After the test, the detection device should be maintained and calibrated as necessary to ensure its long-term stability and accuracy.

[0070] The air tightness detection device for assembled wall panels based on the above scheme is shown in Figure 5 This solution also provides an air circuit control structure of the air tightness detection device, which includes a pneumatic triplet 61, a cylinder control air circuit and a test air pressure control air circuit.

[0071] The pneumatic triplet 61 includes a filtering component, a pressure regulating component, and a water removal component. The air source in the air pump first passes through the pneumatic triplet 61 for filtering, pressure regulating, and water removal operations to ensure that the air is clean, the pressure is stable, and there is no water vapor, and then it is transported to the cylinder control air circuit and the test air pressure control air circuit.

[0072] Among them, the cylinder control air circuit includes a first muffler 62, a two-position five-way solenoid valve 63, and a speed control valve 64. The output end of the pneumatic triplet 61 is connected to the first muffler 62. The first muffler 62 is respectively arranged at the two working ports of the two-position five-way solenoid valve 63 for exhausting the air circuit. The two outlets of the two-position five-way solenoid valve 63 are respectively provided with speed control valves 64 for speed regulation.

[0073] When in the default state, the two-position five-way solenoid valve 63 working module is located on the right side, and the cylinder 43 is in an unpushed state; the air circuit is exhausted through the first muffler 62 to keep the cylinder 43 stationary.

[0074] When the action is executed, the working module of the two-position five-way solenoid valve 63 switches to the left side, and the compressed air enters the push chamber of the cylinder 43, driving the deep part of the cylinder 43, driving the detection plate 41 to press against the wall. At this time, the sealing gasket 42 fits tightly against the wall to form a sealed space.

[0075] The test air pressure control air path includes a pressure regulating valve 65, a second muffler 66, a three-position electromagnetic valve 67, and a digital pressure gauge 68. The output end of the pneumatic three-way joint 61 is connected to the three-position electromagnetic valve 67. The pressure regulating valve 65 is used to pre-set the air pressure output by the air pump 51. The second muffler 66 is arranged at two working ports of the three-position electromagnetic valve 67, and is used to exhaust the air pressure entering the three-position electromagnetic valve 67. The digital pressure gauge 68 is arranged at the outlet end of the three-position electromagnetic valve 67, and is used to display the air pressure input into the cavity of the detection plate 41 in real time.

[0076] When in the default state, the three-position electromagnetic valve 67 is in the middle position, the air path is disconnected, and the digital pressure gauge 68 displays 0. The pressure regulating valve 65 is pre-set to the required air pressure for testing.

[0077] In the testing stage, when the detection plate 41 is pressed against the wall surface, the three-position electromagnetic valve 67 is moved to the left, the air path is connected, the regulated air enters the cavity of the detection plate 41, the testing starts, and the digital pressure gauge 68 displays the current air pressure in real time.

[0078] In the pressure maintaining testing stage, the three-position electromagnetic valve 67 is moved back to the middle position, the air path is closed, and the system enters the pressure maintaining state. At this time, the cavity of the detection plate 41 is disconnected from the air source, and the pressure is maintained only by the sealing performance. If the wall plate joint sealing performance is poor, the pressure will quickly decrease. If the air tightness is good, the pressure will remain stable.

[0079] After the testing is completed, the air cylinder 43 is retracted, the detection plate 41 leaves the wall surface, the cavity is connected to the atmosphere, and the air pressure is naturally released.

[0080] The air tightness detection device for the fabricated wall plate and the air path control structure formed by the above scheme have the following advantages over the prior art:

[0081] Modular integrated design, suitable for flexible detection in construction sites. The components work cooperatively to achieve high integration of the detection function. Through the lifting mechanism and the power mechanism, the height of the detection plate can be flexibly adjusted to avoid obstacles such as back lath and scaffolding, and to adapt to different construction environments.

[0082] Precise positioning of local air tightness detection technology. Focus on key parts such as the joint of the fabricated wall plate and the hole, form a local sealed space through the pressing device, compare the calibration curve with the measured data, accurately locate the leakage point, and avoid the blind area of traditional whole-house detection.

[0083] Early intervention in the construction stage reduces the cost of rectification. After the joint of the wall plate is processed, problems are found and rectified early to avoid rework after decoration is completed. The cost of large-scale demolition and reconstruction in the later stage (materials, labor, and time) is reduced, which is in line with the concept of green building. From cleaning, calibration, and pressure increase to data analysis, a closed-loop detection process is formed to improve the controllability of construction quality.

[0084] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An air tightness detection device for assembled wall panels, characterized in that: It includes a frame device, a lifting mechanism, a power mechanism, a clamping device, and a control mechanism. The power mechanism is arranged on the frame device, and the power mechanism drives the lifting mechanism. The lifting mechanism is arranged on one side of the frame device. Through the drive of the power mechanism, the lifting mechanism can slide up and down along the frame device. The clamping device is connected to the lifting mechanism, and the clamping device can be adjusted up and down following the lifting mechanism. The control mechanism is arranged on the frame device, and the control mechanism is connected to the clamping device. It can drive the clamping device to extend and retract relative to the wall panel, and control the clamping device to fit tightly to the area to be tested, so as to ensure that the area to be tested forms a closed space and transports gas to the area to be tested for airtightness detection.

2. The air tightness detection device for assembled wall panels according to claim 1, characterized in that: The rack device includes a cross bar, a plurality of vertical bars, a rectangular frame, a bottom fixing plate and a protective side plate. The bottom fixing plate is arranged at the bottom of the rectangular frame, and the protective side plate is arranged on one side of the rectangular frame. The plurality of vertical bars are arranged vertically symmetrically, and the first end is connected to the cross bar, and the other end is respectively connected to the bottom fixing plate and the protective side plate to form the main structure of the air tightness detection device.

3. The air tightness detection device for assembled wall panels according to claim 1, characterized in that: The lifting mechanism includes a sliding assembly, a lifting plate, and a screw assembly. The screw assembly is vertically arranged and connected to the frame device at both ends. The sliding assembly can be slidably arranged on the frame assembly and cooperated with the screw assembly. The screw assembly is driven by the power mechanism to rotate and drive the sliding assembly to slide up and down along the frame assembly. The lifting plate is cooperated with the sliding assembly and can move up and down with the sliding assembly.

4. The air tightness detection device for assembled wall panels according to claim 1, characterized in that: The power mechanism includes a servo motor, a reducer, an idler wheel, and a chain. The servo motor and the reducer are connected to form a power assembly. The servo motor can be changed in speed through the reducer. The idler wheel is connected to the ball screw, and the idler wheel is connected to the power assembly through a chain. The idler wheel is driven by the servo motor and the reducer to form a power assembly to drive the lifting mechanism to slide.

5. The air tightness detection device for assembled wall panels according to claim 1, characterized in that: The clamping device includes a detection plate, a sealing gasket, a cylinder, a fixing ring, and an optical axis fixing seat. The sealing gasket is arranged around the detection plate. When the detection plate is tightly fitted to the area to be tested, a closed space is formed in the area to be tested; the cylinder is connected to the optical axis fixing seat, and the optical axis fixing seat can guide the cylinder to move forward and backward; the cylinder drives the detection plate, and the cylinder pushes and controls the forward and backward movement of the detection plate; the cylinder is also provided with a fixing ring, and the fixing ring can limit the cylinder stroke to prevent excessive stroke from damaging the equipment.

6. The air tightness detection device for assembled wall panels according to claim 1, characterized in that: The control mechanism is arranged on the rack device, which includes an air pump, an electrical cabinet, a control box, a button box, and a pressure gauge; the air pump is connected to the cylinder and the detection plate through two routes respectively, and is used to deliver gas to the cylinder and the detection plate respectively; the control box is connected to the servo motor, and is used to control the opening and closing of the servo motor, thereby controlling the lifting and lowering of the lifting mechanism and the clamping device; the button box is connected to the cylinder, and is used to control the forward and backward movement of the cylinder, thereby controlling the forward and backward movement of the lifting mechanism and the clamping device; the electrical cabinet is respectively connected to the button box, the control box, and the pressure gauge, and is used to place the power supply, circuit breaker, circuit board, and ancillary electrical equipment; the pressure gauge and the detection plate are used to monitor the gas pressure entering the initial stage and the internal gas pressure of the detection plate during the formal monitoring process.

7. An air circuit control structure suitable for an air tightness detection device for prefabricated wall panels, which is implemented based on the cooperation of the air tightness detection device suitable for prefabricated wall panels described in claims 1-6 above. The air circuit structure suitable for the air tightness detection device for prefabricated wall panels includes a pneumatic triplet, a cylinder control air circuit and a test air pressure control air circuit. After passing through the pneumatic triplet, the gas is respectively transported to the cylinder control air circuit and the test air pressure control air circuit.

8. According to the air circuit control structure suitable for the air tightness detection device of prefabricated wall panels according to claim 7, the pneumatic triplet includes a filter component, a pressure regulating component, and a water removal component. The air source passes through the pneumatic triplet to perform filtering, pressure regulation, and water removal operations to ensure that the air is clean, the pressure is stable, and there is no water vapor, and then it is transported to the cylinder control air circuit and the test air pressure control air circuit.

9. The air circuit control structure for an assembled wall panel air tightness testing device according to claim 7, wherein the cylinder control air circuit comprises a first muffler, a two-position five-way solenoid valve, and a speed regulating valve; the output end of the pneumatic triplet is connected to the first muffler; the first muffler is respectively provided at two working ports of the two-position five-way solenoid valve for exhausting the air circuit; and the two outlets of the two-position five-way solenoid valve are respectively provided with speed regulating valves for speed regulation; When in the default state, the two-position five-way solenoid valve working module is located on the right, and the cylinder is in an undriven state; the air is exhausted through the first muffler, keeping the cylinder stationary; When the action is executed, the two-position five-way solenoid valve working module switches to the left side, and the compressed air enters the push chamber of the cylinder, driving the cylinder deep inside, causing the detection plate to press against the wall. At this time, the sealing gasket fits tightly against the wall to form a sealed space.

10. The air circuit control structure for an assembled wall panel air tightness testing device according to claim 7, wherein the test air pressure control air circuit comprises a pressure regulating valve, a second muffler, a three-position solenoid valve, and a digital pressure valve; the output end of the pneumatic triplet is connected to the three-position solenoid valve; the pressure regulating valve is used to pre-set the air pressure output by the air pump; a second muffler is provided at each of the two working ports of the three-position solenoid valve for exhausting the air pressure entering the three-position solenoid valve; and the digital pressure valve is provided at the outlet end of the three-position solenoid valve for real-time display of the air pressure input into the test panel cavity; When in the default state: the three-position solenoid valve is in the middle position, the air circuit is disconnected, the digital pressure valve displays 0, and the pressure regulating valve is pre-set to the air pressure required for the test; During the test phase: When the test plate is pressed against the wall, the three-position solenoid valve working module moves left, the gas path is connected, and the pressure-regulated gas enters the test plate cavity. The digital pressure valve displays the current air pressure in real time. During the pressure-maintaining test phase: the three-position solenoid valve operating module moves back to the middle position, the air circuit is closed, and the system enters the pressure-maintaining state. At this time, the detection plate cavity is disconnected from the air source, and the pressure is maintained only by the sealing. If the wall panel joints are poorly sealed, the pressure will drop rapidly; if the airtightness is good, the pressure remains stable. When the test is completed, the cylinder retracts, the detection plate leaves the wall, the cavity is connected to the atmosphere, and the air pressure is released naturally.

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