Air conditioner air pipe sealing performance detection equipment

Abstract

The invention belongs to the technical field of air conditioner air pipe detection, and particularly relates to air conditioner air pipe sealing performance detection equipment, which comprises an operation table, a detection platform, a detection platform, a detection platform and a detection platform, and is characterized in that the top of the operation table is provided with a fixing plate; the movable plate is arranged on the top of the operation table, the end sealing mechanisms are symmetrically arranged on the top of the operation table, and the internal sealing mechanism is arranged on the outer wall of the fixed plate. The internal sealing mechanism is arranged, and a closed space is formed by a shielding assembly and the end sealing mechanism close to one side of the movable plate in the square pipe; compressed air is injected through a pressurizing pipe, a high-pressure environment is formed in the square pipe, the final pressure is recorded, and therefore whether the square pipe leaks or not is judged, after testing is finished, the square pipe is driven by a second telescopic column to be away from the movable plate, the operation is repeated again, pressurizing detection is continued, and a section of untested square pipe is added in each time of testing; whether the square pipe leaks or not is detected section by section, leakage points of the square pipe can be found quickly, and workers can repair the leakage points quickly.

Description

Technical Field

[0001] The invention belongs to the technical field of air duct detection for air conditioners, in particular to a sealing detection device for air ducts for air conditioners. Background Art

[0002] The air duct is a piping system used for air transportation and distribution. The galvanized air duct for air conditioning is a new type of pipe produced in one go by advanced machinery. It is mainly made of metal materials, including galvanized sheet, stainless steel, copper, aluminum and other materials. It is mainly used in the ventilation system of the air conditioning industry. During the production and manufacturing of the air duct, the performance of the air duct needs to be tested using a detection device.

[0003] In the prior art, most of the air-conditioning duct sealing detection devices cannot be freely adjusted according to the length of the duct when detecting the air-conditioning duct, so that the sealing detection device cannot completely cover and seal the port of the duct. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention solves the technical problems thereof by adopting a technical solution: a sealing detection device for air conditioning ducts, comprising: An operating table, wherein a fixing plate is provided on the top of the operating table; An end sealing mechanism is symmetrically arranged on the top of the operating table; the outer wall of the end sealing mechanism on one side is connected to the fixed plate, and the other side is connected to the movable plate; An internal sealing mechanism, wherein the internal sealing mechanism is arranged on the outer wall of the fixed plate, and the outer wall of the internal sealing mechanism is sleeved with the inner wall of the end sealing mechanism; The internal sealing mechanism comprises: a second telescopic column, the second telescopic column being mounted on an outer wall of the fixed plate; A cross mounting frame, the cross mounting frame being arranged on a side of the second telescopic column away from the end sealing mechanism; An adjustment assembly, wherein the adjustment assembly is symmetrically arranged on the upper and lower sides of the cross mounting frame; Corner sealing components, which are symmetrically arranged on the left and right sides of the cross mounting frame; The shielding assembly is arranged on a side of the cross mounting frame away from the second telescopic column.

[0005] Furthermore, the airtightness detection device for air conditioning ducts also includes: A square tube, wherein the square tube is arranged on the top of the operating table, the end sealing mechanisms are arranged at both ends of the square tube, and the internal sealing mechanism is arranged inside the square tube; A movable plate, wherein the bottom of the movable plate is slidably connected to the top of the operating table, and the outer wall of the movable plate is connected to the end sealing mechanism on the side away from the fixed plate; A pressure tube is provided on the inner wall of the movable plate, and one end of the pressure tube is sleeved with the inner wall of the end sealing mechanism close to the movable plate.

[0006] Furthermore, the internal sealing mechanism further comprises: a collar, the collar being arranged on the outer wall of the second telescopic column, the outer wall of the collar being sleeved with the inner wall of the end sealing mechanism; a pressure gauge, the pressure gauge being arranged at an end of the shielding assembly away from the second telescopic column; The outer wall of the adjusting component contacts the inner wall of the square tube, the edge and corner sealing component contacts the edges and corners of the inner wall of the square tube, and the outer wall of the shielding component contacts the outer wall of the edge and corner shielding component.

[0007] Furthermore, the end sealing mechanism includes: a first telescopic column, the first telescopic column being symmetrically arranged on the outer wall of the fixed plate; A mounting plate, the mounting plate being arranged at an end of the first telescopic column away from the fixing plate; The clamping claws are evenly arranged on the inner wall of the mounting plate, and the outer wall of the clamping claws is rotatably connected to the inner wall of the mounting plate.

[0008] Furthermore, the end sealing mechanism further comprises: a push rod, one end of which is rotatably connected to the outer wall of the claw, and the other end of which is rotatably connected to the inner wall of the mounting plate; a washer, the washer being arranged at an end of the mounting plate away from the first telescopic column; The contact sensors are evenly arranged at one end of the gasket away from the mounting plate.

[0009] Furthermore, the adjustment component includes: a first telescopic rod, the first telescopic rod being symmetrically arranged on the upper and lower sides of the cross mounting frame; a first card slot, the first card slot being mounted on the other end of the first telescopic rod; a bracket mounted on an end portion of the first telescopic rod; An airbag ring is arranged on the outer wall of the bracket, and the outer wall of the airbag ring contacts the inner wall of the first clamping groove.

[0010] Furthermore, the corner sealing assembly includes: a second telescopic rod, the second telescopic rod being symmetrically arranged on the left and right sides of the cross mounting frame; The second clamping groove is arranged at an end of the second telescopic rod away from the cross mounting frame, and the inner wall of the second clamping groove contacts the outer wall of the airbag ring.

[0011] Furthermore, the corner sealing assembly further includes: A rotating rod, the rotating rod being symmetrically arranged on the outer wall of the second slot, and the outer wall of the rotating rod being rotatably connected to the outer wall of the second slot; The corner block is installed at one end of the rotating rod away from the second slot, the outer wall of the corner block is rotatably connected to the outer wall of the rotating rod, and an extension piece is provided on the side of the outer wall of the corner block close to the airbag ring.

[0012] Furthermore, the shielding component includes: A support rod, the support rod being arranged at an end of the cross mounting frame away from the second telescopic column; A hollow plate, the hollow plate being mounted on an end of the support rod away from the cross mounting frame; A gear, the outer wall of which is rotatably connected to the outer wall of the hollow plate.

[0013] Furthermore, the shielding component further includes: An extension plate, the outer wall of the extension plate being sleeved with the inner wall of the hollow plate; A rack is provided on the outer wall of the limiting plate, and the outer wall of the rack is meshed with the outer wall of the gear; The limiting plate is arranged on the outer wall of the gear, and the inner wall of the limiting plate contacts the outer wall of the rack.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention provides an end sealing mechanism, and through the contact between the square tube and multiple contact sensors on the gasket, it is determined whether the angle of the square tube remains perpendicular to the mounting plate. Subsequently, the claw is clamped on the edge of the square tube under the drive of the push rod, so that the claw is fixed to the outer wall of the square tube. Pressure is applied by the first telescopic column to tightly connect the gasket on the mounting plate with the end of the square tube to maintain the seal. The sealing effect of the square tube end is maintained and the angle of the square tube is corrected and tested. The tube is placed perpendicular to the mounting plate before the test, which facilitates the sealing test.

[0015] 2. The present invention sets an internal sealing mechanism. The inside of the square tube is formed into a closed space by the shielding assembly and the end sealing mechanism close to the movable plate. Then, compressed air is injected through the pressurized pipe to form a high-pressure environment inside the square tube. At the end of the test time, the final pressure is recorded to determine whether the square tube here is leaking. After the test is completed, the second telescopic column is driven away from the movable plate, and the above operation is repeated again to continue the pressurized test. Each time the test is performed, a section of untested square tube is added to detect whether the square tube is leaking section by section, which makes it easy to quickly find the leak point of the square tube and facilitates workers to quickly repair it.

[0016] 3. The present invention sets an adjustment component so that the corner block and the airbag ring can fit the inner wall of the square tube together, making it easier for the shielding component to seal and shield the remaining space. By adjusting the positions of the second card slot and the first card slot, as well as the different positions of the corner blocks, it can adapt to square tubes of other specifications. For square tubes within the adjustment range, they can be used in conjunction with the shielding component to produce a good sealing effect, so that the space inside the square tube can be tested for sealing in sections, thereby improving the flexibility of detection and facilitating workers to quickly find leakage points for easy repair.

[0017] 4. The present invention sets a shielding component to make the extension plate fit with the surface of the first slot and the second slot, and finally complete the sealed space, and then perform a pressurized test. After the test is completed, the hollow plate is moved to the side away from the movable plate, and then pressurized again, so as to facilitate multiple tests on the internal space of the other pipe, improve the detection accuracy, enable workers to quickly find the leak point, and facilitate maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a rear view of the present invention; Figure 3 It is a structural schematic diagram of the end sealing mechanism of the present invention; Figure 4 It is a structural schematic diagram of the internal sealing mechanism of the present invention; Figure 5 is a rear view of the internal sealing mechanism of the present invention; Figure 6 It is a schematic structural diagram of the regulating assembly of the present invention; Figure 7 Schematic diagram of the structure of the corner sealing assembly of the present invention; Figure 8 It is a structural schematic diagram of the shielding component of the present invention.

[0019] Figure: 1, operating table; 2, fixed plate; 3, square tube; 4, movable plate; 5, end sealing mechanism; 501, first telescopic column; 502, mounting plate; 503, claw; 504, push rod; 505, washer; 506, contact sensor; 6, pressurized tube; 7, internal sealing mechanism; 701, second telescopic column; 702, collar; 703, cross mounting bracket; 704, adjustment assembly; 7041, first telescopic rod; 704 2. First card slot; 7043. Bracket; 7044. Airbag ring; 705. Edge and corner sealing assembly; 7051. Second telescopic rod; 7052. Second card slot; 7053. Rotating rod; 7054. Corner block; 7055. Extension piece; 706. Shielding assembly; 7061. Support rod; 7062. Hollow plate; 7063. Gear; 7064. Limit plate; 7065. Rack; 7066. Extension plate; 707. Pressure gauge. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0021] Example 1, please refer to Figure 1-Figure 5 The present invention provides a technical solution: a sealing detection device for air-conditioning ducts is described as follows.

[0022] include: An operating table 1, with a fixed plate 2 provided on the top of the operating table 1; The end sealing mechanism 5 is symmetrically arranged on the top of the operating table 1; the outer wall of the end sealing mechanism 5 on one side is connected to the fixed plate 2, and the other side is connected to the movable plate 4; The internal sealing mechanism 7 is arranged on the outer wall of the fixed plate 2 , and the outer wall of the internal sealing mechanism 7 is sleeved with the inner wall of the end sealing mechanism 5 .

[0023] The sealing detection equipment for air conditioning ducts also includes: The square tube 3 is arranged on the top of the operating table 1, the end sealing mechanisms 5 are arranged at both ends of the square tube 3, and the internal sealing mechanism 7 is arranged inside the square tube 3. The square tube 3 is a square air conditioning duct; The movable plate 4 has a bottom portion slidably connected to the top of the operating table 1, and an outer wall of the movable plate 4 is connected to an end sealing mechanism 5 on a side away from the fixed plate 2; The pressurizing tube 6 is arranged on the inner wall of the movable plate 4 , and one end of the pressurizing tube 6 is sleeved with the inner wall of the end sealing mechanism 5 close to the movable plate 4 .

[0024] During operation, the square tube 3 is placed on the operating table 1, and the movable plate 4 drives the end sealing mechanism 5 on one side to approach the square tube 3, so that the end sealing mechanisms 5 on both sides of the square tube 3 clamp the two ends of the square tube 3 and block the two ends. At this time, the internal sealing mechanism 7 is inserted into the square tube 3. After the two sides of the square tube 3 are sealed, the internal sealing mechanism 7 is near the end sealing mechanism 5 on the side close to the movable plate 4. The pressurizing pipe 6 is externally connected to the blower to pressurize the internal space of the square tube 3 near the movable plate 4 at this time, and fill it with compressed air to the specified test pressure. Keep the pressure stable for a period of time, and then turn off the air source. Measure the drop in the internal pressure of the system within the specified time. The degree of pressure drop reflects the leakage of the system. Then the internal sealing mechanism 7 moves to the side away from the movable plate 4, and repeats the above operation again. As the moving distance of the internal sealing mechanism 7 and the pressure change, it is determined whether the square tube 3 is leaking and the location where the leakage occurs.

[0025] The internal sealing mechanism 7 comprises: A second telescopic column 701, which is mounted on the outer wall of the fixed plate 2; A cross mounting frame 703 is provided on a side of the second telescopic column 701 away from the end sealing mechanism 5; Adjustment assembly 704, which is symmetrically arranged on the upper and lower sides of the cross mounting frame 703; Corner sealing components 705 are symmetrically arranged on the left and right sides of the cross mounting frame 703; The shielding assembly 706 is disposed on a side of the cross mounting frame 703 away from the second telescopic column 701 .

[0026] The internal sealing mechanism 7 also includes: The collar 702 is provided on the outer wall of the second telescopic column 701 , and the outer wall of the collar 702 is sleeved with the inner wall of the end sealing mechanism 5 ; A pressure gauge 707 is provided at one end of the shielding assembly 706 away from the second telescopic column 701; The outer wall of the adjustment component 704 contacts the inner wall of the square tube 3 , the edge and corner sealing component 705 contacts the edge and corner of the inner wall of the square tube 3 , and the outer wall of the shielding component 706 contacts the outer wall of the edge and corner shielding component 706 .

[0027] After sealing both ends of the square tube 3, the second telescopic column 701 drives the cross mounting frame 703 to move toward the inside of the square tube 3 close to the movable plate 4. Then, the adjusting component 704 is inflated and contacts the inner wall of the square tube 3 to form a square inner circle. The corner sealing component 705 blocks the corners between the adjusting component 704 and the square tube 3. The adjusting component 704 and the corner sealing component 705 cooperate to fit the inner wall of the square tube 3 and adjust a certain size according to the inner diameter of the square tube 3, so as to facilitate the use of square tubes 3 with a certain specification range for testing. Then the shielding assembly 706 is closed, so that the inside of the square tube 3 is formed into a closed space by the shielding assembly 706 and the end sealing mechanism 5 on the side close to the movable plate 4. Then compressed air is injected through the pressurized pipe 6 to form a high-pressure environment inside the square tube 3. At the end of the test time, the final pressure is recorded to determine whether the square tube 3 here is leaking. After the test is completed, the second telescopic column 701 is driven away from the movable plate 4, and the above operation is repeated again to continue the pressurized test. Each time the test is performed, a section of untested square tube 3 is added, and the square tube 3 is tested section by section to see if there is any leakage. This makes it easy to quickly find the leakage point of the square tube 3 and facilitates workers to quickly repair it.

[0028] The end sealing mechanism 5 comprises: A first telescopic column 501, which is symmetrically arranged on the outer wall of the fixed plate 2; A mounting plate 502, which is disposed at one end of the first telescopic column 501 away from the fixing plate 2; The claws 503 are evenly arranged on the inner wall of the mounting plate 502 , and the outer wall of the claws 503 is rotatably connected to the inner wall of the mounting plate 502 .

[0029] The end sealing mechanism 5 also includes: A push rod 504, one end of which is rotatably connected to the outer wall of the claw 503, and the other end of which is rotatably connected to the inner wall of the mounting plate 502; A washer 505 is provided at an end of the mounting plate 502 away from the first telescopic column 501; The contact sensors 506 are evenly arranged at one end of the washer 505 away from the mounting plate 502 .

[0030] After the square tube 3 is placed between the movable plate 4 and the fixed plate 2, the first telescopic column 501 drives the mounting plate 502 to approach the two ends of the square tube 3, and makes the two ends of the square tube 3 contact with the outer wall of the gasket 505. Through the contact between the square tube 3 and the multiple contact sensors 506 on the gasket 505, it is judged whether the angle of the square tube 3 remains perpendicular to the mounting plate 502. Subsequently, the claw 503 is clamped on the edge of the square tube 3 under the drive of the push rod 504, so that the claw 503 is fixed to the outer wall of the square tube 3. Pressure is applied by the first telescopic column 501 to make the gasket 505 on the mounting plate 502 tightly connected with the end of the square tube 3 to maintain the seal, maintain the sealing effect of the end of the square tube 3 and perform correction detection on the angle of the square tube 3, so that the square tube 3 is in a perpendicular state to the mounting plate 502 before the test, which is convenient for sealing detection.

[0031] Example 2, please refer to Figures 1-8 The present invention provides a technical solution: Based on Example 1, the adjustment component 704 includes: The first telescopic rod 7041 is symmetrically arranged on the upper and lower sides of the cross mounting frame 703; A first card slot 7042 , which is installed at the other end of the first telescopic rod 7041 ; Bracket 7043, which is mounted on the end of the first telescopic rod 7041. Bracket 7043 has a certain elasticity and is deformed by the movement of the first telescopic rod 7041. Its function is to provide support for the airbag ring 7044 to prevent the airbag ring 7044 from deforming and separating from the inner wall of the square tube 3; The airbag ring 7044 is arranged on the outer wall of the bracket 7043 , and the outer wall of the airbag ring 7044 contacts the inner wall of the first slot 7042 .

[0032] After the cross mounting frame 703 is brought close to the movable plate 4, the first telescopic rod 7041 is extended, so that the inflated airbag ring 7044 contacts the inner wall of the square tube 3, and the airbag ring 7044 is squeezed to form a sealed contact with the inner wall of the square tube 3, so that the shielding component 706 can separate the inside of the square tube 3 to create a sealed space.

[0033] The corner sealing assembly 705 includes: The second telescopic rod 7051 is symmetrically arranged on the left and right sides of the cross mounting frame 703, and the second telescopic rod 7051 is connected to the bracket 7043; The second slot 7052 is provided at one end of the second telescopic rod 7051 away from the cross mounting frame 703 , and the inner wall of the second slot 7052 contacts the outer wall of the airbag ring 7044 .

[0034] The corner sealing assembly 705 further includes: A rotating rod 7053, which is symmetrically arranged on the outer wall of the second slot 7052, and the outer wall of the rotating rod 7053 is rotatably connected to the outer wall of the second slot 7052; Corner block 7054 is installed at one end of the rotating rod 7053 away from the second slot 7052. The outer wall of the corner block 7054 is rotatably connected to the outer wall of the rotating rod 7053. An extension piece 7055 is provided on the side of the outer wall of the corner block 7054 close to the airbag ring 7044. The corner block 7054 is made of rubber. The extension piece 7055 is convenient for filling the gap between the airbag ring 7044 and the inner corner of the square tube 3 to improve the sealing effect.

[0035] The second telescopic rod 7051 is extended to make the side of the airbag ring 7044 contact with the square tube 3, and then the motor built into the second card slot 7052 drives the rotating rod 7053 to rotate, so that the corner block 7054 contacts and is stuck with the corner of the inner wall of the square tube 3, so that the corner block 7054 and the airbag ring 7044 together fit the inner wall of the square tube 3, so that the shielding component 706 can seal and block the remaining space. By adjusting the position of the second card slot 7052 and the first card slot 7042, as well as the different positions of the corner block 7054, it can adapt to square tubes 3 of other specifications. For square tubes 3 within the adjustment range, they can all be used in conjunction with the shielding component 706 to produce a good sealing effect, so that the space inside the square tube 3 can be tested for sealing in sections, thereby improving the flexibility of detection and facilitating workers to quickly find leakage points for easy repair.

[0036] The shielding component 706 includes: A support rod 7061, which is disposed at one end of the cross mounting frame 703 away from the second telescopic column 701; Hollow plate 7062, which is mounted on the end of the support rod 7061 away from the cross mounting bracket 703, and an opening is formed on the side of the hollow plate 7062 close to the support rod 7061; Gear 7063, the outer wall of gear 7063 is rotatably connected to the outer wall of hollow plate 7062.

[0037] The shielding component 706 further includes: Extension plate 7066, the outer wall of extension plate 7066 is nested with the inner wall of hollow plate 7062, and the thickness of the side of extension plate 7066 near support rod 7061 is the same as that of hollow plate 7062, so that after extension plate 7066 slides out of hollow plate 7062, the surface formed by its expansion contacts all four corner blocks 7054, avoiding the formation of gaps; The rack 7065 is disposed on the outer wall of the limiting plate 7064 , and the outer wall of the rack 7065 is meshedly connected with the outer wall of the gear 7063 ; The limiting plate 7064 is arranged on the outer wall of the gear 7063 , and the inner wall of the limiting plate 7064 contacts the outer wall of the rack 7065 .

[0038] With the cooperation of the adjustment component 704 and the edge and corner sealing component 705, after the inner ring of the square tube 3 is fitted and sealed, the gear 7063 rotates, so that the rack 7065 engaged with the gear 7063 drives the extension plate 7066 to slide out of the hollow plate 7062 until it finally contacts the corner block 7054 on the right, so that the extension plate 7066 fits with the surface of the first slot 7042 and the second slot 7052, and finally completes the sealed space. Then, a pressurized test is performed. After the test is completed, the hollow plate 7062 is moved to the side away from the movable plate 4, and then pressurized again to facilitate multiple tests on the internal space of the square tube 3, improve the detection accuracy, enable workers to quickly find the leakage point, and facilitate maintenance.

[0039] The specific workflow is as follows: During operation, the square tube 3 is placed on the operating table 1. After the square tube 3 is placed between the movable plate 4 and the fixed plate 2, the first telescopic column 501 drives the mounting plate 502 to approach the two ends of the square tube 3, and makes the two ends of the square tube 3 contact the outer wall of the gasket 505. Through the contact between the square tube 3 and the multiple contact sensors 506 on the gasket 505, it is determined whether the angle of the square tube 3 is perpendicular to the mounting plate 502. Subsequently, the claw 503 is clamped on the edge of the square tube 3 by the push rod 504, so that the claw 503 is fixed to the outer wall of the square tube 3. Pressure is applied by the first telescopic column 501 to make the gasket 505 on the mounting plate 502 tightly connected with the end of the square tube 3 to maintain the seal, maintain the sealing effect of the end of the square tube 3 and perform correction and detection on the angle of the square tube 3. After sealing both ends of the square tube 3, the second telescopic column 701 drives the cross mounting frame 703 to move toward the inside of the square tube 3 close to the movable plate 4, and then the adjusting component 704 is inflated and contacts the inner wall of the square tube 3 to form a square inner circle, and the corner sealing component 705 blocks the corners between the adjusting component 704 and the square tube 3. The adjusting component 704 and the corner sealing component 705 are used in conjunction with each other to fit the inner wall of the square tube 3 and adjust a certain size according to the inner diameter of the square tube 3 to facilitate the use of square tubes 3 with a certain specification range for testing. Then the shielding component 706 is closed, so that the inside of the square tube 3 is formed into a closed space by the shielding component 706 and the end sealing mechanism 5 close to the movable plate 4. The pressurizing pipe 6 is connected to an external blower to pressurize the internal space of the square tube 3 near the movable plate 4 at this time, and the compressed air is filled to the specified test pressure. The pressure is kept stable for a period of time, and then the air source is turned off. The drop in the internal pressure of the system within the specified time is measured. The degree of pressure drop reflects the leakage of the system. Then the internal sealing mechanism 7 moves to the side away from the movable plate 4, and the above operation is repeated again. As the moving distance of the internal sealing mechanism 7 and the pressure change, it is determined whether the square tube 3 is leaking and the location where the leakage occurs.

[0040] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A sealing detection device for air conditioning ducts, comprising: An operating table (1), characterized in that a fixing plate (2) is provided on the top of the operating table (1); An end sealing mechanism (5), the end sealing mechanism (5) being symmetrically arranged on the top of the operating table (1); An internal sealing mechanism (7), the internal sealing mechanism (7) being arranged on the outer wall of the fixed plate (2), the outer wall of the internal sealing mechanism (7) being sleeved with the inner wall of the end sealing mechanism (5); The internal sealing mechanism (7) comprises: A second telescopic column (701), the second telescopic column (701) being mounted on the outer wall of the fixed plate (2); a cross mounting frame (703), the cross mounting frame (703) being arranged on a side of the second telescopic column (701) away from the end sealing mechanism (5); An adjustment component (704), the adjustment component (704) being symmetrically arranged on the upper and lower sides of the cross mounting frame (703); An edge and corner sealing component (705), the edge and corner sealing component (705) being symmetrically arranged on the left and right sides of the cross mounting frame (703); A shielding assembly (706) is provided on a side of the cross mounting frame (703) away from the second telescopic column (701).

2. The airtightness detection device for air conditioning ducts according to claim 1, characterized in that: The sealing detection equipment for air conditioning ducts also includes: A square tube (3), wherein the square tube (3) is arranged on the top of the operating table (1), the end sealing mechanism (5) is arranged at both ends of the square tube (3), and the internal sealing mechanism (7) is arranged inside the square tube (3); A movable plate (4), wherein the bottom of the movable plate (4) is slidably connected to the top of the operating table (1), and the outer wall of the movable plate (4) is connected to an end sealing mechanism (5) on a side away from the fixed plate (2); A pressurized tube (6) is provided on the inner wall of the movable plate (4), and one end of the pressurized tube (6) is sleeved with the inner wall of the end sealing mechanism (5) on one side close to the movable plate (4).

3. The airtightness detection device for air conditioning ducts according to claim 1, characterized in that: The internal sealing mechanism (7) further comprises: A collar (702), the collar (702) being arranged on the outer wall of the second telescopic column (701), the outer wall of the collar (702) being sleeved with the inner wall of the end sealing mechanism (5); a pressure gauge (707), the pressure gauge (707) being arranged at one end of the shielding assembly (706) away from the second telescopic column (701); The outer wall of the regulating component (704) contacts the inner wall of the square tube (3), the edge and corner blocking component (705) contacts the edge and corner of the inner wall of the square tube (3), and the outer wall of the shielding component (706) contacts the outer wall of the edge and corner shielding component (706).

4. The airtightness detection device for air conditioning ducts according to claim 1, characterized in that: The end sealing mechanism (5) comprises: A first telescopic column (501), the first telescopic column (501) being symmetrically arranged on the outer wall of the fixed plate (2); A mounting plate (502), the mounting plate (502) being arranged at one end of the first telescopic column (501) away from the fixed plate (2); The claws (503) are evenly arranged on the inner wall of the mounting plate (502), and the outer wall of the claws (503) is rotatably connected to the inner wall of the mounting plate (502).

5. The airtightness detection device for air conditioning ducts according to claim 4, characterized in that: The end sealing mechanism (5) further comprises: A push rod (504), one end of the push rod (504) is rotatably connected to the outer wall of the claw (503), and the other end of the push rod (504) is rotatably connected to the inner wall of the mounting plate (502); a washer (505), the washer (505) being arranged at an end of the mounting plate (502) away from the first telescopic column (501); The contact sensors (506) are evenly arranged at one end of the washer (505) away from the mounting plate (502).

6. The airtightness detection device for air conditioning ducts according to claim 1, characterized in that: The regulating component (704) includes: a first telescopic rod (7041), the first telescopic rod (7041) being symmetrically arranged on the upper and lower sides of the cross mounting frame (703); A first card slot (7042), the first card slot (7042) being mounted on the other end of the first telescopic rod (7041); a bracket (7043), the bracket (7043) being mounted on the end of the first telescopic rod (7041); An airbag ring (7044) is provided on the outer wall of the bracket (7043), and the outer wall of the airbag ring (7044) contacts the inner wall of the first clamping groove (7042).

7. The airtightness detection device for air conditioning ducts according to claim 1, characterized in that: The corner sealing assembly (705) comprises: A second telescopic rod (7051), the second telescopic rod (7051) being symmetrically arranged on the left and right sides of the cross mounting frame (703); A second clamping groove (7052) is provided at one end of the second telescopic rod (7051) away from the cross mounting frame (703), and an inner wall of the second clamping groove (7052) contacts an outer wall of the airbag ring (7044).

8. The airtightness detection device for air conditioning ducts according to claim 7, characterized in that: The corner sealing assembly (705) further comprises: A rotating rod (7053), the rotating rod (7053) is symmetrically arranged on the outer wall of the second clamping slot (7052), and the outer wall of the rotating rod (7053) is rotatably connected to the outer wall of the second clamping slot (7052); A corner block (7054) is mounted on an end of the rotating rod (7053) away from the second slot (7052), an outer wall of the corner block (7054) is rotatably connected to the outer wall of the rotating rod (7053), and an extension piece (7055) is provided on a side of the outer wall of the corner block (7054) close to the airbag ring (7044).

9. The airtightness detection device for air conditioning ducts according to claim 1, characterized in that: The shielding component (706) includes: A support rod (7061), the support rod (7061) being arranged at one end of the cross mounting frame (703) away from the second telescopic column (701); A hollow plate (7062), the hollow plate (7062) being mounted on an end of the support rod (7061) away from the cross mounting frame (703); A gear (7063), wherein the outer wall of the gear (7063) is rotatably connected to the outer wall of the hollow plate (7062).

10. The airtightness detection device for air conditioning ducts according to claim 9, characterized in that: The shielding component (706) further includes: An extension plate (7066), wherein the outer wall of the extension plate (7066) is sleeved with the inner wall of the hollow plate (7062); A rack (7065), the rack (7065) being arranged on the outer wall of the limiting plate (7064), the outer wall of the rack (7065) being meshedly connected with the outer wall of the gear (7063); A limit plate (7064) is provided on the outer wall of the gear (7063), and the inner wall of the limit plate (7064) contacts the outer wall of the rack (7065).

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