A kind of airtightness testing equipment for HVAC metal duct

Abstract

The present invention belongs to the technical field of HVAC metal duct detection, and specifically relates to an airtightness detection device for HVAC metal ducts, comprising an equipment bracket and an equipment shell arranged on the top of the equipment bracket, and also comprising: a delivery bucket fixedly installed on the top of the equipment shell, a plurality of pipe bodies are arranged inside the equipment shell, a V-shaped discharge rack is fixedly connected between the top of the equipment bracket and the equipment shell; a detection mechanism, used for detecting and sorting the pipe bodies in the equipment shell, the detection mechanism is installed on the outside of the equipment bracket. The present invention uses the detection mechanism to detect the plurality of pipe bodies in the equipment shell in turn, and during the detection, the pipe bodies that meet the airtightness standards and those that do not meet the standards are discharged separately, thereby achieving the effect of facilitating batch detection and automatic sorting, and improving the detection efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of HVAC metal duct detection, and in particular relates to an airtightness performance detection device for a HVAC metal duct. Background Art

[0002] As the core component connecting HVAC equipment such as air inlets and outlets, fans, and air conditioning boxes, HVAC metal ducts play a vital role in ventilation, air conditioning, and heating systems. These pipes are usually made of high-quality materials such as galvanized sheets, stainless steel, and polyurethane to ensure that hot water or steam can be efficiently transported in the heating system to provide stable heat for the building. In addition, HVAC metal ducts also play an important role in the ventilation system, effectively removing indoor pollutants and odors, and maintaining the freshness of indoor air.

[0003] In the processing of HVAC metal ducts, air tightness testing is an indispensable part. At present, this test usually adopts the pressure test method, that is, the pipe is placed in the cavity of the fixture, and its air tightness is evaluated by adjusting the internal pressure. However, the existing testing equipment often adopts a one-to-one testing method and cannot perform batch testing on multiple HVAC metal ducts at the same time, which undoubtedly restricts the further improvement of production efficiency. Therefore, optimizing the structure of the testing equipment so that it can realize batch air tightness testing of HVAC metal ducts is of great significance to improving production efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide an airtightness testing device for HVAC metal ducts to solve the problems raised in the above background technology.

[0005] This solution is achieved through the following technical measures: an airtightness testing device for a HVAC metal duct, comprising an equipment bracket and an equipment housing arranged on the top of the equipment bracket, and also comprising:

[0006] A delivery hopper is fixedly mounted on the top of the equipment housing, a plurality of pipe bodies are arranged inside the equipment housing, and a V-shaped discharge rack is fixedly connected between the top of the equipment bracket and the equipment housing, for rolling out the pipe bodies after inspection;

[0007] A detection mechanism, used for detecting and distributing the pipe body in the equipment housing, the detection mechanism being installed on the outside of the equipment housing;

[0008] An insertion inspection mechanism, used for inspecting the flexibility of the pipeline body in the device housing, the insertion inspection mechanism being installed on the outside of the device housing;

[0009] The unloading mechanism is used to stop and re-inspect the pipeline body on the V-shaped unloading rack, and the unloading mechanism is installed on the top of the equipment bracket.

[0010] Preferably, the detection mechanism includes a control mainboard fixedly mounted on the outside of the device housing, telescopic cylinders are installed at both ends of the control mainboard, a detection box is fixedly mounted on one end of the telescopic cylinder away from the control mainboard, and a detection cylinder extending to the inside of the device housing is fixedly connected to one end of the detection box away from the telescopic cylinder, and the two detection cylinders are inserted into the two ends of the pipeline body for airtightness detection, and the data is transmitted to the control mainboard through the detection box and the telescopic cylinder; a driving rod is rotatably installed on the inner side of the V-shaped discharging rack, and the driving rod is located directly below the device housing, and a plurality of equidistantly distributed material placement trays are fixedly connected to the outer side of the driving rod, and a fixed material arc plate is fixedly connected to the outer side of the material placement tray for receiving the lowest pipeline body, and an arc-shaped groove for installing the fixed material arc plate is provided on the outer side of the material placement tray, and a plurality of equidistantly distributed support plates are fixedly connected to the top of the device bracket to improve the bearing capacity of the driving rod, and the driving rod passes through the support plate, and the outer side of the device bracket is fixedly connected to A servo motor is connected, and the servo motor is electrically connected to the control main board, so that the servo motor can rotate the drive rod to the left or right, and the output end of the servo motor is fixedly connected to the drive rod. The control main board can operate the servo motor and the detection box, so that the detection tube on the detection box is inserted into the two ends of the pipeline body, and the air tightness detection can be performed, and the data is transmitted to the control main board for data processing. When the air tightness of the detected pipeline body does not meet the standard, the servo motor can drive the drive rod to rotate to the right, push the pipeline body through the fixed material arc plate on the material placement tray, and send the pipeline body to the inclined surface of the V-shaped discharge rack. When the air tightness of the detected pipeline body meets the standard, the servo motor can reversely rotate the drive rod to push the pipeline body into the inclined surface of the other end of the V-shaped discharge rack, and when the material placement tray rotates, the arc surface of the material placement tray can be used to facilitate the placement of the next pipeline body, so that when the material placement tray rotates back, the pipeline body can smoothly enter the fixed material arc plate, thereby achieving the effect of facilitating batch detection and automatic material distribution.

[0011] Preferably, the insertion and inspection mechanism includes a power device fixedly installed on the outside of the device casing, the power device is electrically connected to the control main board, so that the control main board can operate the power device, both ends of the power device are equipped with rotating rods, one end of the rotating rod is fixedly connected to an eccentric wheel, and a pull rod is rotatably installed on the outside of the eccentric wheel, so that when the eccentric wheel rotates, the pull rod can make a circular motion with the rotating rod as the center, one end of the pull rod is rotatably installed with a connecting rod 1, and the end of the connecting rod 1 away from the connecting rod is rotatably installed with a connecting rod 2, the outside of the detection box is fixedly connected with a positioning column, and the end of the connecting rod 2 away from the connecting rod 1 is rotatably installed on the outside of the positioning column, so that the connecting rod 2 can pull the detection box to reciprocate through the positioning column, a cavity is opened on the surface of the connecting rod 1, and a push rod is rotatably installed on the inner wall of the cavity, and the push rod extends to the outside of the cavity, and a mounting frame is arranged on the outside of the push rod, and the push rod slides through both sides of the mounting frame, The outer side of the push rod is fixedly connected with a disc located on the inner side of the mounting frame, and springs are fixedly connected between the two sides of the disc and the inner side of the mounting frame. The elasticity of the spring is used to make the detection box push the detection tube to be flexibly inserted into the pipeline body. The mounting frame is fixedly installed on the outer side of the equipment shell, and the control main board can start the power device, so that the power device drives the two rotating rods to rotate synchronously, and the rotating rod realizes the circular motion of the pull rod on the eccentric wheel. The pull rod pushes the detection box on the positioning column to reciprocate left and right through the connecting rods 1 and 2, so that the detection tube on the detection box is inserted into the pipeline body. When the connecting rod 1 swings with the push rod as the fulcrum, the thrust of the connecting rod 1 is used to push the push rod to move along the inner side of the mounting frame, so that the disc stretches and compresses the two springs 1 respectively, so that the detection tube can be flexibly inserted into the pipeline body, so as to prevent excessive pressure on both ends of the pipeline body. The detection tube is suitable for pipeline bodies of different lengths, thereby achieving the effect of facilitating the sequential detection of multiple pipeline bodies of different lengths.

[0012] Preferably, the unloading mechanism includes two driven rods which are symmetrically distributed and arranged below the driving rod, the driven rod and the driving rod are fixedly connected with meshing bevel gears, so that when the driving rod rotates, the driven rod can be driven to rotate through the bevel gear, the driven rod is rotatably installed on the inner side of the equipment bracket, the end of the driven rod away from the bevel gear is fixedly connected with a symmetrical cam, the two convex edges of the symmetrical cam are symmetrically distributed, and push plates are arranged on both sides of the symmetrical cam, so that when the symmetrical cam rotates, the push plate can be pushed to move, the side of the push plate away from the symmetrical cam is fixedly connected with a mounting plate, and the end of the mounting plate away from the push plate is fixedly connected with a triangular platform, the surface of the V-shaped discharging rack is provided with a through hole for the triangular platform to limit the sliding, the inner inclined surface of the triangular platform is 90 degrees with the inclined surface of the corresponding V-shaped discharging rack, providing a limit for the discharging pipeline body, used for decelerating and retaining the pipeline body, facilitating re-inspection and improving the safety of discharging the pipeline body, the bottom of the mounting plate is provided with a T-shaped frame, and the T-shaped frame is fixedly installed on the The bottom inner wall of the equipment bracket, the mounting plate slides through the T-shaped frame to provide a guide for the movement of the mounting plate, the outer side of the driven rod is movably sleeved with a positioning cylinder, the positioning cylinder is fixedly installed on the top inner wall of the equipment bracket, the outer side of the positioning cylinder and the outer side of the T-shaped frame are fixedly connected with a sliding rod, the sliding rod slides through the push plate, the push plate and the T-shaped frame are fixedly connected with a spring 2, the spring 2 is sleeved on the sliding rod for resetting the push plate, and the inclined surface of the tripod makes the pipe sliding out of the V-shaped discharge rack The body is decelerated and retained, which is convenient for re-inspection of the pipeline body. When the driving rod rotates, the synchronous rotation of the driven rod can be realized through the two bevel gears. The driven rod rotates the symmetrical cam. The elasticity of the second spring is used to make the push plate move toward the direction of the driven rod as the symmetrical cam rotates. The push plate can pull the triangular table on the mounting plate into the inside of the equipment casing, which is convenient for sliding the pipeline body retained on the triangular table out of the V-shaped discharging rack, thereby achieving the effect of facilitating retention and re-inspection and decelerating discharging, and reducing the floor space of the V-shaped discharging rack.

[0013] Preferably, the bottom of the delivery hopper is a cone-bottom structure, which improves the convenience of feeding the pipeline body.

[0014] Preferably, a slide plate is fixedly connected to the outer side of the detection cylinder, the slide plate is in contact with the inner side of the device housing, and the opening of the detection cylinder is in an arc-shaped structure, thereby improving the stability of the movement of the detection cylinder.

[0015] Preferably, four positioning rods are fixedly mounted on one end of the detection box and are equidistantly distributed in a ring shape on the outside of the detection cylinder. The positioning rods slide through the slide plate to facilitate alignment of the two detection cylinders with the opening of the pipeline body.

[0016] Preferably, a sealing gasket is provided on a side of the slide plate away from the detection box, and four rings are provided on the outer periphery of the sealing gasket and sleeved on the outer side of the positioning rod to improve the sealing performance of the airtightness detection.

[0017] Preferably, the top and bottom of the detection box are fixedly connected with positioning slides, and the top and bottom of the detection box are provided with guide rails for limiting the sliding of the positioning slides, and the guide rails are fixedly installed on the outside of the device housing to improve the stability of the movement of the detection box.

[0018] Preferably, a plurality of rubber strips distributed at equal distances are fixedly connected to a surface of the tripod close to the driving rod for shock absorption and anti-slip.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention sets a detection mechanism, and the control mainboard can operate the servo motor and the detection box, so that the detection tube on the detection box is inserted into the two ends of the pipe body, and the air tightness detection can be performed, and the data is transmitted to the control mainboard, which is convenient for data processing. When the air tightness of the detected pipe body does not meet the standard, the servo motor drives the driving rod to rotate right, and the unqualified pipe body is sent to the corresponding side inclined surface of the V-shaped discharge rack. When the air tightness of the detected pipe body meets the standard, the servo motor can reversely rotate the driving rod to push the pipe body into the inclined surface at the other end of the V-shaped discharge rack. When the material placement tray rotates, the arc surface of the material placement tray can be used to facilitate the placement of the next pipe body, thereby achieving the effect of facilitating batch detection and automatic material sorting;

[0021] 2. The present invention sets an insertion inspection mechanism, and the control main board can start the power device, so that the power device drives the two rotating rods to rotate synchronously, and the rotating rod realizes the circular motion of the pull rod on the eccentric wheel. The pull rod pushes the detection box on the positioning column to move back and forth left and right through the connecting rod 1 and the connecting rod 2, so that the detection cylinder on the detection box is inserted into the pipeline body. When the connecting rod 1 swings with the push rod as a fulcrum, the thrust of the connecting rod 1 is used to push the push rod to move along the inner side of the mounting frame, so that the disc stretches and compresses the two springs 1 respectively, so that the detection cylinder can be inserted into the pipeline body in a flexible manner, preventing excessive pressure on both ends of the pipeline body, and is suitable for pipeline bodies of different lengths, thereby achieving the effect of facilitating the sequential inspection of multiple pipeline bodies of different lengths;

[0022] 3. The present invention sets a feeding mechanism, and the inclined surface of the triangular table slows down and retains the pipe body sliding out of the V-shaped discharge rack, so as to facilitate re-inspection of the pipe body. When the driving rod rotates, the two bevel gears can realize the synchronous rotation of the driven rod. The driven rod rotates the symmetrical cam, and the elasticity of the second spring is used to enable the push plate to move toward the direction of the driven rod as the symmetrical cam rotates. The push plate can pull the triangular table on the mounting plate into the interior of the equipment housing, so as to facilitate the pipe body retained on the triangular table to slide out from the V-shaped discharge rack, thereby achieving the effect of facilitating retention and re-inspection and slowing down the discharge, and can reduce the floor space of the V-shaped discharge rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the pipeline body and the device shell in the present invention;

[0025] Figure 3 It is a structural schematic diagram of the material placement tray and the material setting arc plate in the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the detection tube and the slide plate in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the detection box and the control mainboard in the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the pull rod and the eccentric wheel in the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the mounting frame and the push rod in the present invention;

[0030] Figure 8 It is a structural schematic diagram of the feeding mechanism in the present invention.

[0031] In the figure: 1. Equipment support; 2. Equipment housing; 3. Detection mechanism; 301. Control main board; 302. Telescopic cylinder; 303. Detection box; 304. Detection cylinder; 305. Driving rod; 306. Material placing tray; 307. Fixed material arc plate; 308. Support plate; 309. Servo motor; 4. Insertion and detection mechanism; 401. Power device; 402. Rotating rod; 403. Eccentric wheel; 404. Pull rod; 405. Connecting rod 1; 406. Connecting rod 2; 407. Positioning column; 408. Push rod; 409. Mounting rack; 410, disc; 411, spring one; 5, unloading mechanism; 501, driven rod; 502, bevel gear; 503, symmetrical cam; 504, push plate; 505, mounting plate; 506, triangular table; 507, T-shaped frame; 508, positioning cylinder; 509, slide bar; 510, spring two; 6, delivery bucket; 7, pipeline body; 8, V-shaped unloading rack; 9, slide plate; 10, positioning rod; 11, sealing gasket; 12, collar; 13, positioning slide bar; 14, guide rail; 15, rubber strip. DETAILED DESCRIPTION

[0032] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods and in conjunction with the accompanying drawings.

[0033] See also Figure 1-Figure 3 , a HVAC metal duct airtightness testing device, comprising a device bracket 1 and a device housing 2 arranged on the top of the device bracket 1,

[0034] Also includes:

[0035] A delivery hopper 6 is fixedly mounted on the top of the equipment housing 2. A plurality of pipe bodies 7 are arranged inside the equipment housing 2. A V-shaped discharge rack 8 is fixedly connected between the top of the equipment bracket 1 and the equipment housing 2, and is used to roll out the pipe bodies 7 after the inspection.

[0036] The detection mechanism 3 is used to detect and divide the pipe body 7 in the equipment housing 2. The detection mechanism 3 is installed on the outside of the equipment housing 2;

[0037] The insertion inspection mechanism 4 is used to inspect the flexibility of the pipe body 7 in the device housing 2. The insertion inspection mechanism 4 is installed on the outside of the device housing 2;

[0038] The unloading mechanism 5 is used for stopping and re-inspecting the pipeline body 7 on the V-shaped unloading rack 8 , and the unloading mechanism 5 is installed on the top of the equipment bracket 1 .

[0039] See also Figure 2-Figure 6The detection mechanism 3 includes a control mainboard 301 fixedly mounted on the outer side of the device housing, telescopic cylinders 302 are installed at both ends of the control mainboard 301, a detection box 303 is fixedly mounted on the end of the telescopic cylinder 302 away from the control mainboard 301, and a detection cylinder 304 extending into the inside of the device housing 2 is fixedly connected to the end of the detection box 303 away from the telescopic cylinder 302. The two detection cylinders 304 are inserted into the two ends of the pipeline body 7 for air tightness detection, and the data is transmitted to the control mainboard 301 through the detection box 303 and the telescopic cylinder 302. A driving rod 305 is rotatably installed on the inner side of the V-shaped discharge rack 8. The driving rod 305 is located directly below the device housing 2. A plurality of equidistantly distributed material trays 306 are fixedly connected to the outer side of the driving rod 305. A fixed material arc plate 307 is fixedly connected to the outer side of the material tray 306. An arc groove for installing the fixed material arc plate 307 is provided on the outer side of the material tray 306. The fixed material arc plate 307 is used to receive the pipeline body 7 at the bottom. A plurality of support plates 308 are fixedly connected to the top of the equipment support 1 and are distributed at equal distances, so as to improve the bearing capacity of the driving rod 305. The driving rod 305 passes through the support plates 308. A servo motor 309 is fixedly connected to the outside of the equipment support 1. The servo motor 309 is electrically connected to the control main board 301, so that the servo motor 309 can rotate the driving rod 305 to the left or right. The output end of the servo motor 309 is fixedly connected to the driving rod 305. The servo motor 309 drives the driving rod 305 to rotate, so that the fixed material arc plates 307 on the plurality of material placing trays 306 push the pipeline body 7 and send the pipeline body 7 to the V-shaped unloading rack 8. The arc surface of the material placing tray 306 is used to facilitate the placement of the next pipeline body 7, so that when the driving rod 305 drives the material placing tray 306 to rotate back, the pipeline body 7 can smoothly enter the fixed material arc plates 307.

[0040] The operator starts the servo motor 309 and the detection box 303 through the control main board 301, so that the detection tube 304 on the detection box 303 is inserted into the two ends of the pipe body 7 to perform air tightness detection, and transmits the data to the control main board 301, so as to facilitate the observation of specific data. When the air tightness of the detected pipe body 7 does not meet the standard, the servo motor 309 drives the driving rod 305 to rotate rightward, and sends the unqualified pipe body 7 to the corresponding side inclined surface of the V-shaped discharge rack 8. When the air tightness of the detected pipe body 7 meets the standard, the servo motor 309 can reversely rotate the driving rod 305 to push the pipe body 7 into the inclined surface at the other end of the V-shaped discharge rack 8, thereby achieving the effect of facilitating batch detection and automatic material sorting.

[0041] See also Figure 5-Figure 7The insertion and inspection mechanism 4 includes a power device 401 fixedly installed on the outside of the equipment housing 2. The power device 401 is electrically connected to the control mainboard 301, so that the control mainboard 301 can operate the power device 401. Rotating rods 402 are installed at both ends of the power device 401. One end of the rotating rod 402 is fixedly connected to an eccentric wheel 403. A pull rod 404 is rotatably installed on the outside of the eccentric wheel 403. A connecting rod 1 405 is rotatably installed on one end of the pull rod 404. A connecting rod 2 406 is rotatably installed on the end of the connecting rod 1 405 away from the connecting rod 404. A positioning column 407 is fixedly connected to the outside of the detection box 303. The end of the connecting rod 2 406 away from the connecting rod 1 405 is rotatably installed on the outside of the positioning column 407. When the eccentric wheel 403 rotates, the pull rod 40 The connecting rod 402 makes a circular motion with the rotating rod 402 as the center, so that the connecting rod 406 can pull the detection box 303 to move back and forth through the positioning column 407. A cavity is opened on the surface of the connecting rod 405. A push rod 408 is rotatably installed on the inner wall of the cavity. The push rod 408 extends to the outside of the cavity. A mounting frame 409 is arranged on the outside of the push rod 408. The mounting frame 409 is fixedly installed on the outside of the device housing 2. The push rod 408 slides through both sides of the mounting frame 409. The outer side of the push rod 408 is fixedly connected with a disk 410 located on the inner side of the mounting frame 409. A spring 1 411 is fixedly connected between both sides of the disk 410 and the inner side of the mounting frame 409. The elasticity of the spring 1 411 is used to make the detection box 303 push the detection tube 304 to be flexibly inserted into the pipeline body 7.

[0042] The operator starts the power device 401 by controlling the main board 301, so that the power device 401 drives the two rotating rods 402 to rotate synchronously, and the rotating rod 402 drives the pull rod 404 on the eccentric wheel 403 to move in a circular motion, and the pull rod 404 drives the connecting rod 1 405 to swing with the push rod 408 as the fulcrum, so that the connecting rod 1 405 pushes the detection box 303 on the positioning column 407 to move back and forth left and right through the connecting rod 2 406, and the detection cylinder 304 on the detection box 303 is inserted into the pipeline body 7, and the detection box 303 can be inserted into the pipeline body 7 after the detection is completed. The cylinder 304 is pulled out from the pipe body 7, so as to facilitate the detection of the next pipe body 7. At the same time, the thrust of the connecting rod 405 is used to push the push rod 408 to move along the inner side of the mounting bracket 409, so that the disc 410 stretches and compresses the two springs 411 respectively, so that the detection cylinder 304 can be flexibly inserted into the pipe body 7 to prevent excessive pressure on both ends of the pipe body 7. The cylinder 304 is suitable for pipe bodies 7 of different lengths, thereby achieving the effect of facilitating the sequential detection of multiple pipe bodies 7 of different lengths.

[0043] See also Figure 2 and Figure 8The unloading mechanism 5 includes two driven rods 501 which are symmetrically distributed and arranged below the driving rod 305. The driven rod 501 and the driving rod 305 are fixedly connected with meshing bevel gears 502, so that when the driving rod 305 rotates, the driven rod 501 can be driven to rotate through the bevel gears 502. The driven rod 501 is rotatably installed on the inner side of the equipment bracket 1. One end of the driven rod 501 away from the bevel gear 502 is fixedly connected with a symmetrical cam 503. The two convex edges of the symmetrical cam 503 are symmetrically distributed. Push plates 504 are arranged on both sides of the symmetrical cam 503. , so that the symmetrical cam 503 can push the push plate 504 to move when it rotates. The side of the push plate 504 away from the symmetrical cam 503 is fixedly connected to the mounting plate 505, and the end of the mounting plate 505 away from the push plate 504 is fixedly connected to the triangular platform 506. The surface of the V-shaped discharge rack 8 is provided with a through hole for the triangular platform 506 to limit the sliding of the triangular platform 506. The inner inclined surface of the triangular platform 506 is ninety degrees with the inclined surface of the corresponding V-shaped discharge rack 8, providing a limit for the discharging pipe body 7, which is used to slow down and retain the pipe body 7, facilitate re-inspection and improve the safety of discharging the pipe body 7. A T-shaped frame 507 is provided at the bottom of the mounting plate 505, and the T-shaped frame 507 is fixedly installed on the bottom inner wall of the equipment bracket 1. The mounting plate 505 slides through the T-shaped frame 507 to provide a guide for the movement of the mounting plate 505. A positioning cylinder 508 is movably sleeved on the outer side of the driven rod 501, and the positioning cylinder 508 is fixedly installed on the top inner wall of the equipment bracket 1. A sliding rod 509 is fixedly connected between the outer side of the positioning cylinder 508 and the outer side of the T-shaped frame 507. The sliding rod 509 slides through the push plate 504. A spring 2 510 is fixedly connected between the push plate 504 and the T-shaped frame 507. The spring 2 510 is sleeved on the sliding rod 509 and is used to reset the push plate 504.

[0044] When the pipeline body 7 slides downward along the V-shaped discharge rack 8, it contacts the inclined surface of the triangular platform 506, and can be decelerated and detained. The operator can re-inspect the pipeline body 7. When the driving rod 305 rotates, the two bevel gears 502 drive the driven rod 501 to rotate synchronously, and the driven rod 501 drives the symmetrical cam 503 to rotate synchronously. The rebound force of the spring 2 510 is used to make the push plate 504 move toward the direction of the driven rod 501 as the symmetrical cam 503 rotates. The push plate 504 can pull the triangular platform 506 on the mounting plate 505 into the interior of the equipment housing 2, and the pipeline body 7 can slide downward along the surface of the V-shaped discharge rack 8 again, thereby achieving the effect of facilitating detention and re-inspection and decelerating discharge, and can reduce the footprint of the V-shaped discharge rack 8.

[0045] See also Figure 1-Figure 4The bottom of the delivery bucket 6 is a cone-bottom structure, which improves the convenience of feeding the pipeline body 7. The outer side of the detection cylinder 304 is fixedly connected with a slide plate 9, and the slide plate 9 contacts the inner side of the equipment housing 2. The opening of the detection cylinder 304 is an arc-shaped structure, which improves the stability of the movement of the detection cylinder 304. One end of the detection box 303 is fixedly installed with four positioning rods 10 distributed in an annular shape and equidistantly on the outside of the detection cylinder 304. The positioning rod 10 slides through the slide plate 9 to facilitate the alignment of the two detection cylinders 304 with the opening of the pipeline body 7. A sealing gasket 11 is provided on the side of the slide plate 9 away from the detection box 303. The outer periphery of the sealing gasket 11 is provided with four rings 12 sleeved on the outside of the positioning rod 10, which improves the sealing performance of the air tightness detection.

[0046] The delivery bucket 6 with a cone bottom structure can quickly drop multiple pipe bodies 7 into the equipment housing 2 in sequence, and when the detection box 303 pushes the detection tube 304 to move, it can drive the slide plate 9 and the four positioning rods 10 to move toward the pipe body 7, so that the detection tube 304 can be quickly aligned with the opening of the pipe body 7, and when the sealing gasket 11 contacts the pipe body 7, it can improve the sealing performance of the airtightness detection. After long-term use, the sealing gasket 11 can be removed through the ring 12, which improves the efficiency of installation and disassembly.

[0047] See also Figure 4 , Figure 5 and Figure 8 The top and bottom of the detection box 303 are fixedly connected with a positioning slide bar 13, and the top and bottom of the detection box 303 are provided with a guide rail 14 for the positioning slide bar 13 to limit the sliding. The guide rail 14 is fixedly installed on the outside of the device housing 2, which improves the stability of the movement of the detection box 303. A plurality of equidistantly distributed rubber strips 15 are fixedly connected to one side of the tripod 506 close to the driving rod 305, and the rubber strips 15 are used for shock absorption and anti-skid.

[0048] When the detection box 303 moves, it can drive the positioning slide bar 13 to move along the guide rail 14, thereby improving the stability of the movement of the detection box 303, making it easier for the detection tube 304 to align with the pipe body 7 for detection, and the rubber strip 15 can provide shock absorption and buffering for the sliding pipe body 7, so that the pipe body 7 can be stably stopped on the triangular table 506.

[0049] Working principle: The operator first loads multiple pipe bodies 7 from the delivery bucket 6 into the equipment housing 2 in sequence. Then, the operator starts the servo motor 309, the detection box 303 and the power device 401 through the control main board 301. The power device 401 drives the two rotating rods 402 to rotate synchronously. The rotating rod 402 drives the circular motion of the pull rod 404 on the eccentric wheel 403. The pull rod 404 drives the connecting rod 1 405 to swing with the push rod 408 as the fulcrum, so that the pull rod 404 pushes the detection box 303 on the positioning column 407 to move back and forth left and right through the connecting rod 2 406. The detection cylinder 304 on the detection box 303 is inserted into the pipe body 7, and the air tightness test can be carried out. After the test is completed, the detection cylinder 304 is pulled out from the pipe body 7, and the data is transmitted to the control main board 301, so as to observe the specific data. When the connecting rod 405 is swinging, the thrust of the connecting rod 405 is used to move the push rod 408 along the inner side of the mounting frame 409. The push rod 408 pushes the disc 410 to stretch and compress the two springs 411 respectively, so that the detection cylinder 304 can be flexibly inserted into the pipeline body 7 to prevent excessive pressure on both ends of the pipeline body 7, and is suitable for pipeline bodies 7 of different lengths. At the same time, the servo motor 309 drives the driving rod 305 to rotate, so that the fixed material arc plates 307 on the multiple material placing trays 306 push the pipeline body 7 and send the pipeline body 7 to the V-shaped unloading rack 8. Then, the servo motor 309 drives the material placing trays 306 on the driving rod 305 to rotate back, and the pipeline body 7 enters the fixed material arc plates 307. When the air tightness of the tested pipe body 7 does not meet the standard, the servo motor 309 drives the driving rod 305 to rotate rightward, and sends the unqualified pipe body 7 to the corresponding side inclined surface of the V-shaped discharge rack 8. When the air tightness of the tested pipe body 7 meets the standard, the servo motor 309 can reversely rotate the driving rod 305 to push the pipe body 7 into the inclined surface at the other end of the V-shaped discharge rack 8. When the pipe body 7 slides downward along the V-shaped discharge rack 8, it contacts the inclined surface of the triangular table 506. The operator can re-inspect the pipe body 7 and drive the driven gear 506 through the two bevel gears 502 when the driving rod 305 rotates. The rod 501 rotates synchronously, and the driven rod 501 drives the symmetrical cam 503 to rotate synchronously. The rebound force of the spring 2 510 is used to make the push plate 504 move toward the direction of the driven rod 501 as the symmetrical cam 503 rotates. The push plate 504 can pull the triangular table 506 on the mounting plate 505 into the interior of the equipment housing 2, and the pipe body 7 can slide downward along the surface of the V-shaped discharge rack 8 again, thereby achieving the effect of batch detection and automatic material sorting, improving the detection efficiency, and facilitating the airtightness detection of multiple pipe bodies 7 of different lengths, thereby improving the applicability of the detection equipment.

[0050] Technical features not described in the present invention can be implemented by existing technologies and will not be described in detail here. The present invention is not limited to the above specific embodiments, and changes, modifications, additions or substitutions made by ordinary technicians in the field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A device for testing the air tightness of a HVAC metal duct, comprising a device support (1) and a device housing (2) arranged on the top of the device support (1), characterized in that: Also includes: A delivery hopper (6) is fixedly mounted on the top of the equipment housing (2); a plurality of pipe bodies (7) are arranged inside the equipment housing (2); and a V-shaped discharge rack (8) is fixedly connected between the top of the equipment bracket (1) and the equipment housing (2); A detection mechanism (3) is used to detect and distribute the pipeline body (7) in the equipment housing (2), and the detection mechanism (3) is installed on the outside of the equipment housing (2); An insertion inspection mechanism (4) is used to inspect the flexibility of the pipeline body (7) in the device housing (2), and the insertion inspection mechanism (4) is installed on the outside of the device housing (2); A material discharge mechanism (5) for stopping and re-inspecting the pipe body (7) on the V-shaped discharge rack (8), wherein the material discharge mechanism (5) is installed on the top of the equipment support (1); The detection mechanism (3) comprises a control main board (301) fixedly mounted on the outside of the device housing (2), telescopic cylinders (302) being mounted on both ends of the control main board (301), a detection box (303) being fixedly mounted on one end of the telescopic cylinder (302) away from the control main board (301), a detection cylinder (304) extending into the inside of the device housing (2) being fixedly connected to one end of the detection box (303) away from the telescopic cylinder (302), a driving rod (305) being rotatably mounted on the inner side of the V-shaped discharge rack (8), the driving rod (305) being located directly below the device housing (2), and the outer side of the driving rod (305) being fixedly mounted. A plurality of equally spaced material placement trays (306) are connected, a material placement arc plate (307) is fixedly connected to the outer side of the material placement tray (306), an arc groove for mounting the material placement arc plate (307) is provided on the outer side of the material placement tray (306), a plurality of equally spaced support plates (308) are fixedly connected to the top of the equipment bracket (1), the driving rod (305) passes through the support plates (308), a servo motor (309) is fixedly connected to the outer side of the equipment bracket (1), the servo motor (309) is electrically connected to the control main board (301), and an output end of the servo motor (309) is fixedly connected to the driving rod (305); The unloading mechanism (5) comprises two driven rods (501) which are symmetrically distributed and arranged below the driving rod (305); the driven rod (501) and the driving rod (305) are both fixedly connected with meshing bevel gears (502); the driven rod (501) is rotatably mounted on the inner side of the equipment bracket (1); one end of the driven rod (501) away from the bevel gear (502) is fixedly connected with a symmetrical cam (503); push plates (504) are arranged on both sides of the symmetrical cam (503); one side of the push plate (504) away from the symmetrical cam (503) is fixedly connected with a mounting plate (505); one end of the mounting plate (505) away from the push plate (504) is fixedly connected with a triangular platform (506); a through hole is provided on the surface of the V-shaped unloading rack (8) for the triangular platform (506) to limit the sliding movement; The inner inclined surface of the triangular platform (506) is at a ninety-degree angle with the inclined surface of the corresponding V-shaped discharge rack (8); a T-shaped frame (507) is provided at the bottom of the mounting plate (505); the T-shaped frame (507) is fixedly mounted on the bottom inner wall of the equipment bracket (1); the mounting plate (505) slides through the T-shaped frame (507); a positioning cylinder (508) is movably sleeved on the outer side of the driven rod (501); the positioning cylinder (508) is fixedly mounted on the top inner wall of the equipment bracket (1); a sliding rod (509) is fixedly connected between the outer side of the positioning cylinder (508) and the outer side of the T-shaped frame (507); the sliding rod (509) slides through the push plate (504); a second spring (510) is fixedly connected between the push plate (504) and the T-shaped frame (507); the second spring (510) is sleeved on the sliding rod (509).

2. The airtightness testing device for HVAC metal duct according to claim 1 is characterized in that: The insertion and inspection mechanism (4) includes a power device (401) fixedly mounted on the outside of the device housing (2), the power device (401) being electrically connected to the control main board (301), a rotating rod (402) being installed at both ends of the power device (401), one end of the rotating rod (402) being fixedly connected to an eccentric wheel (403), a pull rod (404) being rotatably mounted on the outside of the eccentric wheel (403), a connecting rod 1 (405) being rotatably mounted on one end of the pull rod (404), a connecting rod 2 (406) being rotatably mounted on the end of the connecting rod 1 (405) away from the pulling rod (404), a positioning column (407) being fixedly connected to the outside of the detection box (303), and the connecting rod 2 (406) being away from the pulling rod (404). One end of the connecting rod 1 (405) is rotatably mounted on the outside of the positioning column (407); a cavity is opened on the surface of the connecting rod 1 (405); a push rod (408) is rotatably mounted on the inner wall of the cavity; the push rod (408) extends to the outside of the cavity; a mounting frame (409) is arranged on the outside of the push rod (408); the push rod (408) slides through both sides of the mounting frame (409); a disk (410) located on the inside of the mounting frame (409) is fixedly connected to the outside of the push rod (408); a spring 1 (411) is fixedly connected between both sides of the disk (410) and the inside of the mounting frame (409); and the mounting frame (409) is fixedly mounted on the outside of the device housing (2).

3. The airtightness testing device for HVAC metal duct according to claim 2 is characterized in that: The bottom of the delivery bucket (6) is a conical bottom structure.

4. The airtightness testing device for HVAC metal duct according to claim 3 is characterized by: A slide plate (9) is fixedly connected to the outside of the detection cylinder (304), the slide plate (9) is in contact with the inside of the device housing (2), and the opening of the detection cylinder (304) is in an arc-shaped structure.

5. The airtightness testing device for HVAC metal duct according to claim 4 is characterized in that: Four positioning rods (10) are fixedly mounted on one end of the detection box (303) and are distributed in a circular shape and at equal intervals on the outside of the detection cylinder (304). The positioning rods (10) slide through the slide plate (9).

6. The airtightness testing device for HVAC metal ducts according to claim 5 is characterized by: A sealing gasket (11) is provided on a side of the slide plate (9) away from the detection box (303), and four collars (12) sleeved on the outside of the positioning rod (10) are provided on the outer periphery of the sealing gasket (11).

7. The airtightness testing device for HVAC metal duct according to claim 6 is characterized by: The top and bottom of the detection box (303) are both fixedly connected to a positioning slide bar (13), and the top and bottom of the detection box (303) are both provided with a guide rail (14) for limiting the sliding of the positioning slide bar (13), and the guide rail (14) is fixedly installed on the outside of the device housing (2).

8. The airtightness testing device for HVAC metal duct according to any one of claims 1 to 7, characterized in that: A plurality of rubber strips (15) distributed at equal distances are fixedly connected to a surface of the triangular platform (506) close to the driving rod (305).

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