Door and window sealing performance detection device with pressure feedback function

Abstract

The invention discloses a door and window sealing performance detection device with a pressure feedback function, and relates to the technical field of detection, the door and window sealing performance detection device comprises a fan, a detector, an air supply pipe, a pressure measuring pipe and a sealing box, the air outlet of the fan is communicated with the detector, one end of the air supply pipe is communicated with the air outlet of the detector, and the other end of the air supply pipe is communicated with the pressure measuring pipe; the other end of the air supply pipe is communicated with the sealing box, one end of the pressure measuring pipe is communicated with the detection end of the detector, the other end of the pressure measuring pipe is communicated with the sealing box, the sealing box is arranged on a door and window needing to be detected in a sleeving mode, and a positioning mechanism is arranged in the sealing box and used for recognizing leakage points. During detection, a window needing to be detected is sleeved with the sealing box, then the detector is started, the detector can control the draught fan to be started, air is injected into the sealing box through the air supply pipe, the draught fan is closed after certain pressure is reached, and the sealing performance can be judged by detecting the pressure difference between the exterior and the interior of the door and window through the pressure measuring pipe.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, and specifically to a door and window airtightness detection device with a pressure feedback function. Background Art

[0002] A door and window airtightness detection device is usually used to detect the sealing effect of produced doors and windows to ensure that the doors and windows have good sound insulation, heat insulation, wind prevention, waterproof and other properties. Its design principle can achieve the effect of real-time monitoring and feedback of the airtightness state by the coordinated work of a pressure sensor and a control system.

[0003] However, in the prior art, the detection of door and window airtightness mostly adopts the overall pressure difference method, that is, after pressurizing in a closed space, the overall sealing performance is judged by monitoring the pressure decay rate. However, such methods have the following limitations: Difficult to locate leakage points: Traditional detection means can only evaluate the airtightness of the whole door and window, and cannot accurately locate the leakage position at the connection between the frame and the glass, with low efficiency; Insufficient dynamic feedback: Most devices rely on static pressure detection, cannot real-time feedback the pressure change of the leakage point, are difficult to quantify the leakage degree, and even more cannot judge the size of the leakage point; Lack of environmental simulation: In actual use, doors and windows are often affected by wind vibration, and the sealing strip may deform or loosen due to long-term vibration. The prior art lacks the function of simulating the vibration environment, resulting in a deviation between the detection result and the actual working condition.

[0004] For example, the prior patent (such as CN220063311U) proposes to cooperate an air pump and a pressure gauge, and judge whether the airtightness is qualified through the change of the pressure gauge value, and cannot accurately locate the leakage point. Summary of the Invention

[0005] The purpose of the present invention is to provide a door and window airtightness detection device with a pressure feedback function to solve the problems proposed in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: The door and window airtightness detection device includes a blower, a detector, an air supply pipe, a pressure measuring pipe and a sealing box. The air outlet of the blower is communicated with the detector, one end of the air supply pipe is communicated with the air outlet of the detector, the other end of the air supply pipe is communicated with the sealing box, one end of the pressure measuring pipe is communicated with the detection end of the detector, the other end of the pressure measuring pipe is communicated with the sealing box, the sealing box is sleeved on the door and window to be detected, and a positioning mechanism is arranged in the sealing box for identifying the leakage point.

[0007] During detection, first, the sealed box is sleeved on the window to be detected. There are sealing rings around the sealed box to ensure airtightness. Then, the detector is started. The detector will control the fan to start and inject air into the sealed box through the air supply pipe. After reaching a certain pressure, the fan is turned off. Since a sealed space is formed between the sealed box and the window, the airtightness can be judged by detecting the pressure difference between the outside and inside of the door and window through the pressure measuring pipe. The detector is equipped with a pressure sensor inside, which can read the pressure in the pressure measuring pipe in real time and feedback the pressure to the detector, thus realizing the real-time detection of airtightness.

[0008] Furthermore, a working chamber is provided inside the sealed box. A number of positioning mechanisms are arranged in the working chamber. The positioning mechanisms are arranged at the junction between the window frame and the glass. The positioning mechanism includes a protective shell, a marking component, a detection component and an opening and closing component. The protective shell is fixedly connected to the inner wall of the working chamber. One end of the protective shell close to the window is provided with a stepped surface. The marking component is fixedly connected to the protective shell. The detection component is fixedly connected to the protective shell. The detection component is used to detect the pressure difference between the inner cavity of the protective shell and the working chamber. The opening and closing component is fixedly connected to the protective shell. The opening and closing component is used to control the connection between the inner cavity of the protective shell and the working chamber.

[0009] The leakage points of the window are generally located at the connection between the frame and the glass. The frame and the glass are sealed by a sealing strip. If the sealing strip is not installed properly, leakage points will appear. The positioning mechanism is fixed on the sealed box and its layout direction matches the shape of the window. When the sealed box is fitted to the window, a number of positioning mechanisms will automatically fit to the connection between the frame and the glass, thus positioning the leakage points. The stepped surface provided at one end of the protective shell matches the shape of the connection between the frame and the glass and can fit to the connection between the two, thus ensuring that a sealed space is formed between the inner cavity of the protective shell and the window. When the detector conducts the airtightness detection, the opening and closing component is in the open state, and the inner cavity of the protective shell is connected to the working chamber. At this time, the pressure in the inner cavity of the protective shell is the same as that in the working chamber. When the detector detects that the airtightness of the window is unqualified, the opening and closing component closes. At this time, the inner cavity of the protective shell is not connected to the working chamber. For the protective shell at the leakage position, due to gas leakage, the pressure in the inner cavity of this part of the protective shell will be less than the pressure in the working chamber. By detecting this pressure difference through the detection component, it can be judged how the leakage occurred. Then, through the marking component, a mark is made at this position, realizing the visual marking of the leakage point, thus facilitating subsequent processing.

[0010] Furthermore, the detection component includes a piston, a fixed spring and a magnetic rod. A chute is provided on the protective shell. The chute connects the working chamber and the inner cavity of the protective shell. The piston is slidably connected to the chute. One end of the fixed spring is fixedly connected to the piston, and the other end of the fixed spring is fixedly connected to the upper end of the chute. The magnetic rod is fixedly connected to the piston. A coil is wound around one end of the chute close to the magnetic rod. The coil is externally connected to the detection system; During detection: The magnetic rod is inserted into the coil.

[0011] When a certain positioning mechanism is located at the leakage point, the gas pressure in the inner cavity of the position protection shell will gradually decrease, and the larger the leakage point, the faster the gas pressure decreases. The pressure in the working cavity remains unchanged, that is, a pressure difference is generated between the pressure in the inner cavity of the protection shell and the pressure in the working cavity. Under the action of the pressure difference, the piston will be pushed to move along the chute towards the inner cavity side of the protection shell, the fixing spring is stretched under force, and the magnetic rod is inserted into the coil at a certain speed, making a cutting magnetic induction line movement, thereby generating an induced current. The detection system can detect this current to locate the leakage point; and because the larger the leakage point, the faster the gas pressure decreases, the faster the magnetic rod is inserted into the coil, and the larger the induced current generated, that is, the larger the induced current detected by the detection system, the larger the leakage point.

[0012] Furthermore, the marking component includes a guide sleeve, an adjusting electromagnet, a repelling magnet, a slider and a connecting rod. The guide sleeve is fixedly connected to the protection shell. A guide groove is provided inside the guide sleeve. The adjusting electromagnet is fixedly connected to the upper inner wall of the guide groove. The adjusting electromagnet is electrically connected to the detection system. The repelling magnet is arranged opposite to the adjusting electromagnet. The opposite ends of the repelling magnet and the adjusting electromagnet are like-named magnetic poles. The repelling magnet is fixedly connected to the slider. The slider is slidably connected to the guide groove. The connecting rod is fixedly connected to the slider. A support spring is sleeved on the connecting rod. An elastic contact is provided at one end of the connecting rod away from the slider. Marking ink is coated on the elastic contact.

[0013] When the detection component at a certain position detects the leakage point, the detection system activates the adjusting electromagnet in the marking component at the same position. Under the action of the magnetic force, the adjusting electromagnet will generate a certain repulsive force on the repelling magnet, causing the slider connected to the repelling magnet to move along the guide groove towards the window direction. The support spring is compressed under force. Under the transmission action of the connecting rod, the elastic contact with the marking ink will abut against the surface of the window, deforming and leaving a visual mark on the window; and, according to the characteristic that the larger the induced current generated by the coil detected by the detection system, the larger the leakage point, the larger the current transmitted by the detection system to the adjusting electromagnet, the greater the magnetic force of the adjusting electromagnet, the longer the moving distance of the slider, the larger the deformation range of the elastic contact, and the larger the marking range generated on the window, that is, it realizes automatically adjusting the size of the marking point according to the size of the leakage point. The larger the leakage point, the larger the marking point.

[0014] Furthermore, the opening and closing assembly includes a sealing cover, a ring-shaped electromagnet, an attracting ring, and an adjusting spring. The protective shell is provided with a communication port and a support groove. The sealing cover is slidably connected to the communication port. The ring-shaped electromagnet is fixedly connected to the sealing cover and electrically connected to the detection system. The attracting ring is fixedly connected to the protective shell and arranged opposite to the ring-shaped electromagnet. The attracting ring is made of ferromagnetic material. A plurality of connecting columns are circumferentially arranged on the sealing cover, and the plurality of connecting columns are slidably connected to the support groove. One end of the adjusting spring is fixedly connected to the bottom end of the connecting column, and the other end of the adjusting spring is fixedly connected to the inner wall of the support groove; When closed: The ring-shaped electromagnet abuts against the attracting ring.

[0015] During the airtightness detection, under the elastic force of the adjusting spring, the sealing cover maintains the opening of the communication port. At this time, the inner cavity of the protective shell is communicated with the working cavity. When the detector detects that the airtightness is unqualified, the detection system will activate the ring-shaped electromagnet. Since the attracting ring is made of ferromagnetic material, the energized ring-shaped electromagnet will be adsorbed onto the attracting ring, thereby driving the connecting columns around the sealing cover to slide along the support groove. The adjusting spring is compressed under force, and the sealing cover closes the communication port, making the inner cavity of the protective shell in a sealed state for subsequent positioning of the leakage point.

[0016] Furthermore, the elastic contact is made of rubber material.

[0017] The elastic contact made of rubber material has good softness and can avoid scratching the glass during positioning.

[0018] Furthermore, a vibration mechanism is provided at the connection between the air supply pipe and the sealing box. The vibration mechanism is used to simulate the vibration received when the doors and windows are in use.

[0019] When the window is in use, it will be affected by the wind and generate a certain vibration. The vibration mechanism is used to simulate the use environment to test the airtightness performance of the window under various environments. The vibration mechanism is driven by using the wind force during air injection through the air supply pipe as the power source.

[0020] Furthermore, the vibration mechanism includes a connecting sleeve, a bracket, a fan blade, and an impact rod. The connecting sleeve is fixedly connected to the sealing box. The connecting sleeve is provided with a wave groove. The bracket is slidably connected to the wave groove. The fan blade is fixedly connected to the bracket. The impact rod is fixedly connected to the bracket. There are two impact rods, and the two impact rods are respectively arranged on both sides of the bracket; During air intake: The two impact rods alternately impact the surface of the object to be tested.

[0021] When the air supply pipe supplies air, the air flow will flow into the working chamber of the sealing box at a certain flow rate. The flowing air flow will impact on the fan blades, causing the fan blades to receive a certain deflecting force. Since the fan blades are fixed on the bracket, it will drive the bracket to slide along the wave groove on the connecting sleeve, making the movement track of the bracket fit with the wave groove, and also making the impact rods on both sides of the bracket alternately impact on the surface of the window, thereby generating vibration and realizing the simulation of the influence of wind force during the use of the window.

[0022] Furthermore, guide columns are arranged on both sides of the bracket, and the guide columns are slidably connected with the wave groove.

[0023] The shape of the guide column matches the cross-section of the wave groove, so that the movement of the bracket along the wave groove is smoother.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1. By arranging a number of positioning mechanisms on the sealing box that match the shape of the window, the leakage points of the window are automatically located; by utilizing the characteristic that the pressure at the leakage point will decrease, through the cooperation among the piston, the magnetic rod, the fixed spring and the coil, under the action of the pressure difference, the piston will be pushed to move along the chute towards the inner cavity side of the protective shell, the fixed spring is stretched by force, the magnetic rod is inserted into the coil at a certain speed, and makes a cutting magnetic induction line movement, thereby generating an induced current. Moreover, the larger the leakage point, the faster the gas pressure decreases, the faster the magnetic rod is inserted into the coil, and the larger the generated induced current, that is, the larger the induced current detected by the detection system, the larger the leakage point, realizing the automatic detection of the size and position of the leakage point.

[0025] 2. By adjusting the cooperation between the electromagnet and the repelling magnet, the greater the current transmitted by the control system to the adjusting electromagnet, the longer the moving distance of the slider, the greater the deformation range of the elastic contact, and the greater the marking range generated on the window, that is, it realizes the automatic adjustment of the size of the marking point according to the size of the leakage point. The larger the leakage point, the larger the marking point.

[0026] 3. By utilizing the wind force during the air supply of the air supply pipe during detection, through the cooperation among the fan blades, the bracket and the spiral groove, the impact force of the air flow is converted into the driving force for the movement of the bracket, thereby driving the impact rods on both sides of the bracket to alternately impact on the surface of the window, and realizing the simulation of the influence of wind force during the use of the window without additional power. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the partial cross-sectional view of the sealing box; Figure 3 is the partial cross-sectional view of the positioning mechanism; Figure 4 isFigure 3 Partial enlarged view of location A; Figure 5 is Figure 3 Partial enlarged view of location B; Figure 6 Schematic diagram of the vibration mechanism of the present invention; Figure 7 is Figure 6 Partial enlarged view of location C.

[0028] In the figure: 1, air blower; 2, detector; 3, air supply duct; 4, pressure measuring tube; 5, sealing box; 51, working chamber; 6, positioning mechanism; 61, protective shell; 611, stepped surface; 612, sliding groove; 613, communication port; 614, support groove; 62, marking assembly; 621, guide sleeve; 6211, guide groove; 622, adjusting electromagnet; 623, repelling magnet; 624, slider; 625, connecting rod; 626, support spring; 627, elastic contact; 63, detection assembly; 631, piston; 632, fixing spring; 633, magnetic rod; 634, coil; 64, opening and closing assembly; 641, sealing cover; 6411, connecting column; 642, annular electromagnet; 643, attracting ring; 644, adjusting spring; 7, vibration mechanism; 71, connecting sleeve; 711, wave groove; 72, bracket; 721, guide post; 73, fan blade; 74, impact rod. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment: As Figures 1-7 shown, the present invention provides a technical solution for a door and window airtightness detection device with a pressure feedback function. The door and window airtightness detection device includes an air blower 1, a detector 2, an air supply duct 3, a pressure measuring tube 4, and a sealing box 5. The air outlet of the air blower 1 is communicated with the detector 2. One end of the air supply duct 3 is communicated with the air outlet of the detector 2, and the other end of the air supply duct 3 is communicated with the sealing box 5. One end of the pressure measuring tube 4 is communicated with the detection end of the detector 2, and the other end of the pressure measuring tube 4 is communicated with the sealing box 5. The sealing box 5 is sleeved on the door and window to be detected, and a positioning mechanism 6 is arranged in the sealing box 5. The positioning mechanism 6 is used to identify the leakage point.

[0031] During detection, first, the sealing box 5 is sleeved on the window to be detected. There are sealing rings around the sealing box 5 to ensure airtightness. Then, the detector 2 is started. The detector 2 will control the fan 1 to start and inject air into the sealing box 5 through the air supply pipe 3. After reaching a certain pressure, the fan 1 is turned off. Since a sealed space is formed between the sealing box 5 and the window, the airtightness can be judged by detecting the pressure difference between the outside and inside of the door and window through the pressure measuring pipe 4. The detector 2 is equipped with a pressure sensor inside, which can read the pressure in the pressure measuring pipe 4 in real time and feedback the pressure to the detector 2, thus realizing the real-time detection of airtightness.

[0032] There is a working cavity 51 inside the sealing box 5. Several groups of positioning mechanisms 6 are arranged in the working cavity 51. The several positioning mechanisms 6 are arranged at the junction between the window frame and the glass. The positioning mechanism 6 includes a protective shell 61, a marking component 62, a detection component 63 and an opening and closing component 64. The protective shell 61 is fixedly connected to the inner wall of the working cavity 51. One end of the protective shell 61 close to the window is provided with a stepped surface 611. The marking component 62 is fixedly connected to the protective shell 61. The detection component 63 is fixedly connected to the protective shell 61. The detection component 63 is used to detect the pressure difference between the inner cavity of the protective shell 61 and the working cavity 51. The opening and closing component 64 is fixedly connected to the protective shell 61. The opening and closing component 64 is used to control the connection or disconnection between the inner cavity of the protective shell 61 and the working cavity 51.

[0033] The leakage points of the window are generally located at the connection between the frame and the glass. The frame and the glass are sealed by a sealing strip. If the sealing strip is not installed in place, leakage points will appear. The positioning mechanism 6 is fixed on the sealing box 5 and its layout direction matches the shape of the window. When the sealing box 5 is fitted to the window, several positioning mechanisms 6 will automatically fit to the connection between the frame and the glass, so as to locate the leakage points. The stepped surface 611 provided at one end of the protective shell 61 matches the shape of the connection between the frame and the glass and can fit to the connection between the two, thus ensuring that a sealed space is formed between the inner cavity of the protective shell 61 and the window. When the detector 2 conducts the airtightness detection, the opening and closing component 64 is in the open state, and the inner cavity of the protective shell 61 is connected to the working cavity 51. At this time, the pressure in the inner cavity of the protective shell 61 is the same as that in the working cavity 51. When the detector 2 detects that the airtightness of the window is unqualified, the opening and closing component 64 closes. At this time, the inner cavity of the protective shell 61 is not connected to the working cavity 51. For the protective shell 61 at the leakage position, due to gas leakage, the pressure in the inner cavity of the protective shell 61 at this place will be less than the pressure in the working cavity 51. By detecting this pressure difference through the detection component 63, it can be judged how the leakage occurs. Then, a mark is made at this position through the marking component 62, and the visualization marking of the leakage point is realized, which is convenient for subsequent processing.

[0034] The detection component 63 includes a piston 631, a fixing spring 632 and a magnetic rod 633. A sliding groove 612 is provided on the protective shell 61. The sliding groove 612 communicates the working chamber 51 and the inner cavity of the protective shell 61. The piston 631 is slidably connected to the sliding groove 612. One end of the fixing spring 632 is fixedly connected to the piston 631, and the other end of the fixing spring 632 is fixedly connected to the upper end of the sliding groove 612. The magnetic rod 633 is fixedly connected to the piston 631. A coil 634 is wound around one end of the sliding groove 612 close to the magnetic rod 633. The coil 634 is externally connected to a detection system; During detection: The magnetic rod 633 is inserted into the coil 634.

[0035] When a certain positioning mechanism 6 is located at the leakage point, the gas pressure in the inner cavity of the protective shell 61 at this position will gradually decrease, and the larger the leakage point, the faster the gas pressure decreases. The pressure in the working chamber 51 remains unchanged, that is, a pressure difference is generated between the pressure in the inner cavity of the protective shell 61 and the pressure in the working chamber 51. Under the action of the pressure difference, the piston 631 will be pushed to move along the sliding groove 612 towards the inner cavity side of the protective shell 61. The fixing spring 632 is stretched under force, and the magnetic rod 633 is inserted into the coil 634 at a certain speed, making a cutting magnetic induction line movement, thereby generating an induced current. The detection system can detect this current to locate the leakage point; and because the larger the leakage point, the faster the gas pressure decreases, the faster the magnetic rod 633 is inserted into the coil 634, and the larger the generated induced current, that is, the larger the induced current detected by the detection system, the larger the leakage point.

[0036] The marking component 62 includes a guide sleeve 621, an adjusting electromagnet 622, a repelling magnet 623, a slider 624 and a connecting rod 625. The guide sleeve 621 is fixedly connected to the protective shell 61. A guide groove 6211 is provided in the guide sleeve 621. The adjusting electromagnet 622 is fixedly connected to the inner wall of the upper end of the guide groove 6211. The adjusting electromagnet 622 is electrically connected to the detection system. The repelling magnet 623 is arranged opposite to the adjusting electromagnet 622. The opposite ends of the repelling magnet 623 and the adjusting electromagnet 622 are like-named magnetic poles. The repelling magnet 623 is fixedly connected to the slider 624. The slider 624 is slidably connected to the guide groove 6211. The connecting rod 625 is fixedly connected to the slider 624. A supporting spring 626 is sleeved on the connecting rod 625. One end of the connecting rod 625 away from the slider 624 is provided with an elastic contact 627, and the elastic contact 627 is coated with marking ink.

[0037] When the detection component 63 at a certain position detects a leakage point, the detection system activates the regulating electromagnet 622 within the same-position marking component 62. Under the action of magnetic force, the regulating electromagnet 622 will exert a certain repulsive force on the repulsive magnet 623, causing the slider 624 connected to the repulsive magnet 623 to move along the guiding groove 6211 towards the window direction. The supporting spring 626 is compressed under force. Under the transmission action of the connecting rod 625, the elastic contact 627 with marking ink will abut against the surface of the window, deform, and leave a visual mark on the window. Moreover, according to the characteristic that the larger the induced current generated by the coil 634 detected by the detection system, the larger the leakage point, the larger the current transmitted by the detection system to the regulating electromagnet 622, the greater the magnetic force of the regulating electromagnet 622, the longer the moving distance of the slider 624, the larger the deformation range of the elastic contact 627, and the larger the marking range generated on the window. That is, it realizes automatically adjusting the size of the marking point according to the size of the leakage point. The larger the leakage point, the larger the marking point.

[0038] The opening and closing component 64 includes a sealing cover 641, an annular electromagnet 642, an attracting ring 643, and a regulating spring 644. The protective shell 61 is provided with a communication port 613 and a supporting groove 614. The sealing cover 641 is slidably connected to the communication port 613. The annular electromagnet 642 is fixedly connected to the sealing cover 641. The annular electromagnet 642 is electrically connected to the detection system. The attracting ring 643 is fixedly connected to the protective shell 61. The attracting ring 643 is arranged opposite to the annular electromagnet 642. The attracting ring 643 is made of ferromagnetic material. A plurality of connecting columns 6411 are circumferentially arranged on the sealing cover 641. The plurality of connecting columns 6411 are slidably connected to the supporting groove 614. One end of the regulating spring 644 is fixedly connected to the bottom end of the connecting column 6411, and the other end of the regulating spring 644 is fixedly connected to the inner wall of the supporting groove 614. When closed: The annular electromagnet 642 abuts against the attracting ring 643.

[0039] During the airtightness detection, the sealing cover 641 maintains the opening of the communication port 613 under the elastic force of the regulating spring 644. At this time, the inner cavity of the protective shell 61 is in communication with the working cavity 51. When the detector 2 detects that the airtightness is unqualified, the detection system will activate the annular electromagnet 642. Since the attracting ring 643 is made of ferromagnetic material, the energized annular electromagnet 642 will be attracted to the attracting ring 643, thereby driving the connecting columns 6411 around the sealing cover 641 to slide along the supporting groove 614. The regulating spring 644 is compressed under force, and the sealing cover 641 closes the communication port 613, making the inner cavity of the protective shell 61 in a sealed state for subsequent positioning of the leakage point.

[0040] The elastic contact 627 is made of rubber.

[0041] The elastic contact 627 made of rubber material has good flexibility and can be prevented from scratching the glass during positioning.

[0042] A vibration mechanism 7 is provided at the connection between the air supply pipe 3 and the sealing box 5. The vibration mechanism 7 is used to simulate the vibration received when the doors and windows are in use.

[0043] When the window is in use, it will be affected by the wind force and generate a certain vibration. The vibration mechanism 7 is used to simulate the use environment to test the sealing performance of the window under various environments. The vibration mechanism 7 is driven by the wind force when the air supply pipe 3 injects air as the power source.

[0044] The vibration mechanism 7 includes a connecting sleeve 71, a bracket 72, a fan blade 73 and an impact rod 74. The connecting sleeve 71 is fixedly connected to the sealing box 5. A wave groove 711 is provided on the connecting sleeve 71. The bracket 72 is slidably connected to the wave groove 711. The fan blade 73 is fixedly connected to the bracket 72. The impact rod 74 is fixedly connected to the bracket 72. There are two impact rods 74, and the two impact rods 74 are respectively arranged on both sides of the bracket 72; During air intake: The two impact rods 74 alternately impact the surface of the object to be tested.

[0045] When the air supply pipe 3 supplies air, the air flow will flow into the working chamber 51 of the sealing box 5 at a certain flow rate. The flowing air flow will impact the fan blade 73, causing the fan blade 73 to receive a certain deflection force. Since the fan blade 73 is fixed on the bracket 72, it will drive the bracket 72 to slide along the wave groove 711 on the connecting sleeve 71, making the movement track of the bracket 72 fit the wave groove 711, and thus making the impact rods 74 on both sides of the bracket 72 alternately impact the surface of the window, generating vibration, and realizing the simulation of the influence of wind force during the use of the window.

[0046] Guide columns 721 are arranged on both sides of the bracket 72, and the guide columns 721 are slidably connected to the wave groove 711.

[0047] The shape of the guide column 721 matches the cross-section of the wave groove 711, making the movement of the bracket 72 along the wave groove 711 smoother.

[0048] Working principle of the present invention: During detection, first, the sealed box 5 is sleeved on the window to be detected. Then, the detector 2 is started. The detector 2 will control the blower 1 to start and inject air into the sealed box 5 through the air supply pipe 3. After reaching a certain pressure, the blower 1 is turned off, and the pressure difference between the outside and inside of the door and window is detected through the pressure measuring pipe 4 to determine the sealing performance. When the sealed box 5 is fitted to the window, several positioning mechanisms 6 will automatically fit to the connection between the frame and the glass, so as to locate the leakage point. When a certain positioning mechanism 6 is located at the leakage point, the gas pressure in the inner cavity of the protective shell 61 at this position will gradually decrease. Under the action of the pressure difference, the piston 631 will be pushed to move along the chute 612 towards the inner cavity side of the protective shell 61, and the fixed spring 632 will be stretched under force. The magnetic rod 633 will insert into the coil 634 at a certain speed and make a cutting magnetic induction line movement, thus generating an induced current. The detection system can detect this current to locate the leakage point. The detection system starts the adjusting electromagnet 622 in the same-position marking component 62. Under the action of the magnetic force, the adjusting electromagnet 622 will generate a certain repulsive force on the repulsive magnet 623, so that the slider 624 connected to the repulsive magnet 623 will move along the guiding groove 6211 towards the window direction. The supporting spring 626 will be compressed under force. Under the transmission action of the connecting rod 625, the elastic contact 627 with marking ink will abut against the surface of the window, deform, and leave a visual mark on the window.

[0049] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

Claims

1. A door and window sealing detection device with pressure feedback function, characterized in that: The door and window sealing detection device comprises a fan (1), a detector (2), an air supply pipe (3), a pressure measuring tube (4) and a sealing box (5); the air outlet of the fan (1) is connected to the detector (2); one end of the air supply pipe (3) is connected to the air outlet of the detector (2); the other end of the air supply pipe (3) is connected to the sealing box (5); one end of the pressure measuring tube (4) is connected to the detection end of the detector (2); the other end of the pressure measuring tube (4) is connected to the sealing box (5); the sealing box (5) is sleeved on the door and window to be detected; a positioning mechanism (6) is provided inside the sealing box (5); the positioning mechanism (6) is used to identify a leakage point.

2. A door and window sealing detection device with pressure feedback function according to claim 1, characterized in that: The sealing box (5) is provided with a working chamber (51), and a plurality of positioning mechanisms (6) are arranged in the working chamber (51). The plurality of positioning mechanisms (6) are arranged at the junction between the window frame and the glass. The positioning mechanism (6) comprises a protective shell (61), a marking component (62), a detection component (63), and an opening and closing component (64). The protective shell (61) is tightly connected to the inner wall of the working chamber (51), and a stepped surface (611) is provided at one end of the protective shell (61) close to the window. The marking component (62) is tightly connected to the protective shell (61), and the detection component (63) is tightly connected to the protective shell (61). The detection component (63) is used to detect the pressure difference between the inner chamber of the protective shell (61) and the working chamber (51). The opening and closing component (64) is tightly connected to the protective shell (61), and is used to control whether the inner chamber of the protective shell (61) and the working chamber (51) are connected.

3. A door and window sealing detection device with pressure feedback function according to claim 2, characterized in that: The detection assembly (63) comprises a piston (631), a fixed spring (632) and a magnetic rod (633); a slide groove (612) is provided on the protective shell (61); the slide groove (612) communicates with the working chamber (51) and the inner chamber of the protective shell (61); the piston (631) is slidably connected to the slide groove (612); one end of the fixed spring (632) is firmly connected to the piston (631); the other end of the fixed spring (632) is firmly connected to the upper end of the slide groove (612); the magnetic rod (633) is firmly connected to the piston (631); a coil (634) is wound around one end of the slide groove (612) close to the magnetic rod (633); the coil (634) is externally connected to a detection system; During detection: the magnetic bar (633) is inserted into the coil (634).

4. The door and window sealing detection device with pressure feedback function according to claim 3, characterized in that: The marking assembly (62) comprises a guide sleeve (621), an adjusting electromagnet (622), a repelling magnet (623), a slider (624) and a connecting rod (625); the guide sleeve (621) is tightly connected to the protective shell (61); a guide groove (6211) is provided in the guide sleeve (621); the adjusting electromagnet (622) is tightly connected to the inner wall of the upper end of the guide groove (6211); the adjusting electromagnet (622) is electrically connected to the detection system; the repelling magnet (623) is connected to the adjusting electromagnet (622); ) are arranged facing each other, the opposing ends of the repelling magnet (623) and the regulating electromagnet (622) are the same magnetic poles, the repelling magnet (623) is tightly connected to the slider (624), the slider (624) is slidably connected to the guide groove (6211), the connecting rod (625) is tightly connected to the slider (624), a supporting spring (626) is sleeved on the connecting rod (625), and an elastic contact (627) is provided at one end of the connecting rod (625) away from the slider (624), and the elastic contact (627) is coated with marking ink.

5. The door and window sealing detection device with pressure feedback function according to claim 4, characterized in that: The opening and closing assembly (64) comprises a sealing cover (641), an annular electromagnet (642), an attraction ring (643) and an adjustment spring (644); the protective shell (61) is provided with a communication port (613) and a support groove (614); the sealing cover (641) is slidably connected to the communication port (613); the annular electromagnet (642) is tightly connected to the sealing cover (641); the annular electromagnet (642) is electrically connected to the detection system; the attraction ring (643) is electrically connected to the protective shell (614); 61) is tightly connected, the attraction ring (643) and the annular electromagnet (642) are arranged opposite to each other, the attraction ring (643) is made of ferromagnetic material, a plurality of connecting columns (6411) are arranged circumferentially of the sealing cover (641), a plurality of the connecting columns (6411) are slidably connected to the support groove (614), one end of the adjusting spring (644) is tightly connected to the bottom end of the connecting column (6411), and the other end of the adjusting spring (644) is tightly connected to the inner wall of the support groove (614); When closed: the annular electromagnet (642) abuts against the attraction ring (643).

6. The door and window sealing detection device with pressure feedback function according to claim 4, characterized in that: The elastic contact (627) is made of rubber.

7. The door and window sealing detection device with pressure feedback function according to claim 1, characterized in that: A vibration mechanism (7) is provided at the connection point between the air supply pipe (3) and the sealing box (5), and the vibration mechanism (7) is used to simulate the vibration to which the door and window are subjected when in use.

8. The door and window sealing detection device with pressure feedback function according to claim 7, characterized in that: The vibration mechanism (7) comprises a connecting sleeve (71), a bracket (72), a fan blade (73) and a striking rod (74); the connecting sleeve (71) is tightly connected to the sealing box (5); a wave groove (711) is provided on the connecting sleeve (71); the bracket (72) is slidably connected to the wave groove (711); the fan blade (73) is tightly connected to the bracket (72); the striking rod (74) is tightly connected to the bracket (72); two striking rods (74) are provided, and the two striking rods (74) are respectively arranged on both sides of the bracket (72); When air is introduced, the two impact rods (74) impact the surface of the object to be tested alternately.

9. A door and window sealing detection device with pressure feedback function according to claim 8, characterized in that: Guide columns (721) are arranged on both sides of the bracket (72), and the guide columns (721) are slidably connected to the wave groove (711).

Images