Easy-to-rectify leak detection device of FFU (Fan Filter Unit) device

Abstract

The invention discloses an FFU device leak detection device convenient for deviation rectification, and relates to the technical field of FFU device detection, the FFU device leak detection device comprises a workbench and a lifting assembly, the upper end of the workbench is internally and rotatably connected with a support roller, the top of the workbench is fixedly provided with a rack, the lifting assembly is arranged in the rack, and the support roller is rotatably connected with the support roller. The lifting assembly comprises a hydraulic cylinder, a lifting plate, a connecting frame, an X-shaped frame, a bottom plate, a sliding block, a sliding rod, a lifting frame and a bottom roller. When leakage detection is carried out on the FFU device, the FFU device only needs to be placed on the workbench, the hydraulic cylinder drives the lifting plate to move downwards at the moment, the fan cover can be placed at the top opening of the FFU device, the FFU device is rapidly connected, and when an aerosol generator generates particles, a fan in the upper end of the fan cover works, so that leakage detection is carried out on the FFU device. The air containing the aerosol particles can be sent into the FFU device, so that the content of the particles passing through the FFU device can be detected by an aerosol photometer at the other end of the FFU device, and whether the FFU device is damaged or leaked or not can be judged.

Description

Technical Field

[0001] The invention relates to the technical field of FFU device detection, in particular to a leakage detection device for an FFU device which is convenient for deviation correction. Background Art

[0002] FFU device generally refers to fan filter unit, which is a self-powered air supply and filtration device, a modular terminal air supply device with filtering function. The fan filter unit inhales air from the top and filters it through HEPA. The filtered clean air is evenly delivered on the entire air outlet surface. After the FFU device is produced, a leak detection device is needed to detect whether there is a leak in the filter or between the filter and the installation frame.

[0003] At present, when leak detection is performed on an FFU device, an aerosol generator is mostly used to generate particles on one side of the FFU. After being inhaled by the FFU device, a handheld aerosol photometer detects the concentration of particulate matter in the gas on the other side of the FFU to determine the leakage status of the FFU device. However, during the operation, it is necessary to manually carry it, manually turn on the power supply and manually detect the handheld probe, which results in a time-consuming and labor-intensive operation.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a leak detection device for an FFU device that is easy to correct is proposed. Summary of the invention

[0005] The object of the present invention is to provide a leakage detection device for an FFU device which is convenient for deviation correction, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a leak detection device of an FFU device which is convenient for correcting deviation, comprising a workbench and a lifting assembly, wherein the upper end of the workbench is rotatably connected to a supporting rod, and a frame is fixed on the top of the workbench, the lifting assembly is arranged inside the frame, the lifting assembly comprises a hydraulic cylinder, a lifting plate, a connecting frame, an X-shaped frame, a bottom plate, a slider, a sliding rod, a lifting frame and a bottom roller, a hydraulic cylinder is arranged on the top of the frame, and the bottom of the hydraulic cylinder is connected to the lifting plate, the four ends of the lifting plate are rotatably connected to the connecting frame, and the lower end of the connecting frame is rotatably connected to the X-shaped frame, one end of the lower part of the X-shaped frame is rotatably connected to the bottom plate, and the other end of the X-shaped frame is rotatably connected to the sliding rod, the sliding rod is slidably connected to the inside of the sliding rod, and the lifting frame is fixed on the top of the sliding rod located on the upper part of the X-shaped frame, and the bottom roller is arranged inside the lifting frame, a fan cover is fixed in the center of the inner part of the lifting plate, and an aerosol generator is connected to one side of the fan cover.

[0007] Furthermore, positioning components are arranged at both ends of the bottom of the lifting plate, and the positioning components include guide grooves, sliding columns, positioning plates and optical rods. Guide grooves are symmetrically opened on both sides of the frame, and sliding columns are slidably connected inside the guide grooves. A positioning plate is fixed to one end of the sliding column, and a optical rod is slidably connected inside the upper end of the positioning plate, and the optical rod is fixedly connected to the lifting plate.

[0008] Furthermore, the positioning assembly also includes a screw, a clamping plate and a guide rod. The middle part of the positioning plate is threadedly connected to the screw, and one end of the screw is rotatably connected to the clamping plate. One end of the clamping plate is symmetrically provided with a guide rod, and the guide rod is slidably connected to the positioning plate.

[0009] Furthermore, a detection component is provided at the lower end of the interior of the workbench, and the detection component includes a bottom frame, a dual-axis motor, a first bevel gear group and a reciprocating screw. A dual-axis motor is fixed to one side of the bottom frame, and a first bevel gear group is provided at the end of the dual-axis motor. A reciprocating screw is connected to one end of the first bevel gear group, and the reciprocating screw is rotatably connected to the bottom frame.

[0010] Furthermore, the detection assembly also includes a slide seat, an adjustment seat and an aerosol photometer. The slide seat is arranged on the outer side of the reciprocating screw, and the adjustment seat is sleeved on the outer side of one end of the slide seat, and the aerosol photometer is fixed inside the adjustment seat.

[0011] Furthermore, the detection assembly also includes a pulley frame, a limit block and a guide block. The outer side of the adjustment seat is slidably connected to the pulley frame, the inner sides of the bottom frame are provided with limit blocks, and the inner corners of the bottom frame are fixed with guide blocks.

[0012] Furthermore, a rotating assembly is fixed to the bottom of the bottom frame, and the rotating assembly includes a second bevel gear group, a transmission rod and a first ring gear. The second bevel gear group is arranged at one end of the reciprocating screw, and the bottom of the second bevel gear group is connected to the transmission rod. The transmission rod is rotatably connected to the bottom frame, and the middle part of the transmission rod is hexagonal, and the first ring gear is slidably connected to the outer side of the middle part of the transmission rod.

[0013] Furthermore, the rotating assembly also includes a limit plate, a spring seat and an extrusion plate. The outer side of the first gear ring is rotatably connected to the limit plate, and a spring seat is arranged at the top end of the limit plate, and the spring seat is fixedly connected to the bottom frame. An extrusion plate is arranged at the top end of the limit plate.

[0014] Furthermore, the rotating assembly also includes a top block, an idle gear and a second gear ring. A top block is fixed to one end of the top of the adjustment seat, and the top block is in a right angle shape. The bottom of the transmission rod is rotatably connected to the idle gear, and a second gear ring is fixed to the top of the idle gear.

[0015] Furthermore, the rotating assembly also includes a transmission gear, a driving gear and a support. A transmission gear is meshed on one side of the idle gear, and the transmission gear is rotationally connected to the bottom frame. A support is fixed inside the transmission gear, and the support is rotationally connected to the bottom frame.

[0016] The present invention provides a leakage detection device for an FFU device which is convenient for deviation correction and has the following beneficial effects:

[0017] 1. When leak detection is performed on the FFU device, the present invention only needs to place it on the workbench. At this time, the hydraulic cylinder drives the lifting plate to move downward, and the fan cover can be placed at the top opening of the FFU device and quickly connected. At this time, when the aerosol generator generates particles, the fan inside the upper end of the fan cover works, and the air containing aerosol particles will be sent to the inside of the FFU device, so that the aerosol photometer can be used at the other end to detect the content of the particles passing through, thereby judging whether the FFU device is damaged or leaking, which is conducive to improving the convenience of detection, and When the lifting plate moves downward, it will also push the X-shaped frame through the connecting frame, so that the slider slides on the outside of the slide rod, which can move the lifting frame downward and lower the height of the lifting frame, so that the next FFU device to be inspected can be moved to the lifting frame, or the FFU device on the other side can be unloaded, and after the inspection, when the hydraulic cylinder drives the lifting plate upward, the lifting frame is moved up in the same way, and after stopping moving, the support rod and bottom roller can be used to improve the convenience of moving the FFU device, so as to replace the FFU device, thereby saving more effort in the process of loading and unloading.

[0018] 2. In the process of the lifting plate moving up, the present invention will also drive the positioning plate to move up through the light rod. At this time, the sliding column will slide inside the guide groove, so that the positioning plate will move obliquely upward, and after the FFU device is placed on the support rod, when the lifting plate moves down, the positioning plate can move along the path of the guide groove to center the FFU device and automatically correct it to avoid the FFU device from tilting and affecting the docking effect between the fan cover and the FFU device. In addition, the screw can be rotated before use. At this time, the guide rod will guide the splint, so as to adjust the actual distance between the two splints after positioning, which is conducive to expanding the adaptation range of the positioning component.

[0019] 3. During detection, the dual-axis motor of the present invention drives the slide to move back and forth through the first bevel gear set and the reciprocating screw, so that the aerosol photometer on the adjusting seat can perform a scanning detection on the bottom of the FFU device, and when the slide drives the adjusting seat to move toward the limit block, since the limit block is in the shape of a triangle with two layers of sharp corners facing opposite directions, it will squeeze the pulley frame, so that it drives the adjusting seat to move on the slide, so that in the process of reciprocating movement of the slide, the position of the adjusting seat on the slide is automatically changed, so as to realize the row-by-row scanning detection of the bottom of the FFU device, and when the adjusting seat moves to the guide block at the corner, the height of the pulley frame can be automatically changed to make it contact with the limit block of another layer. At the same time, there is also a large friction between the pulley frame and the adjusting seat, so the adjusted height can be maintained, so that during the detection process, the detection range of the aerosol generator covers the bottom of the FFU device.

[0020] 4. In the present invention, after the aerosol photometer performs a complete reciprocating sweep on the bottom of the FFU device, the adjustment seat will move toward the extrusion plate. At this time, the top block can be used to push the extrusion plate, so that the limit plate drives the first gear ring to move downward and insert into the second gear ring. At this time, the reciprocating screw can drive the transmission gear to roll on the driving gear through the second bevel gear set, the transmission rod, the first gear ring, the second gear ring, and the idle gear, thereby driving the bottom frame to rotate on the pillar, and after rotating a quarter of a circle, the top block will separate from the extrusion plate, and the spring seat will pull the limit plate, thereby driving the first gear ring to separate from the second gear ring. At this time, since the pillar and the bottom frame are connected by a damping shaft, they will stop rotating under resistance after separation, so that the bottom frame can stop rotating after rotating a quarter of a circle, so that the flat probe of the aerosol photometer will leak at the bottom of the FFU device again after changing its direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a leakage detection device of an FFU device that is convenient for deviation correction according to the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of a lifting assembly of a leakage detection device of an FFU device that is convenient for deviation correction according to the present invention;

[0023] Figure 3 A schematic diagram of the three-dimensional structure of a positioning assembly of a leakage detection device of an FFU device that is convenient for deviation correction according to the present invention;

[0024] Figure 4 It is a schematic diagram of the top view of the structure of a detection component of a leakage detection device of an FFU device that is convenient for deviation correction according to the present invention;

[0025] Figure 5 A schematic diagram of the three-dimensional structure of an adjustment seat of a leakage detection device of an FFU device that is convenient for deviation correction according to the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of a rotating assembly of a leakage detection device of an FFU device which is convenient for deviation correction according to the present invention.

[0027] In the figure: 1, workbench; 2, support rod; 3, frame; 4, lifting assembly; 401, hydraulic cylinder; 402, lifting plate; 403, connecting frame; 404, X-shaped frame; 405, bottom plate; 406, slider; 407, slide bar; 408, lifting frame; 409, bottom roller; 5, fan cover; 6, aerosol generator; 7, positioning assembly; 701, guide groove; 702, slide column; 703, positioning plate; 704, light rod; 705, screw rod; 706, clamping plate; 707, guide rod; 8, detection assembly; 801, bottom frame; 802 , double-axis motor; 803, first bevel gear set; 804, reciprocating screw; 805, slide seat; 806, adjustment seat; 807, aerosol photometer; 808, pulley frame; 809, limit block; 810, guide block; 9, rotating assembly; 901, second bevel gear set; 902, transmission rod; 903, first ring gear; 904, limit plate; 905, spring seat; 906, extrusion plate; 907, top block; 908, idler gear; 909, second ring gear; 910, transmission gear; 911, drive gear; 912, pillar. DETAILED DESCRIPTION

[0028] See also Figures 1 to 6 The present invention provides a technical solution: a leak detection device for an FFU device that is convenient for deviation correction, comprising a workbench 1 and a lifting assembly 4, wherein a support rod 2 is rotatably connected to the upper end of the workbench 1, and a frame 3 is fixed on the top of the workbench 1, and the lifting assembly 4 is arranged inside the frame 3, and the lifting assembly 4 comprises a hydraulic cylinder 401, a lifting plate 402, a connecting frame 403, an X-shaped frame 404, a bottom plate 405, a slider 406, a slide bar 407, a lifting frame 408 and a bottom roller 409, a hydraulic cylinder 401 is arranged on the top of the frame 3, and a lifting plate 402 is connected to the bottom of the hydraulic cylinder 401, and the lifting plate 402 is connected to the bottom of the hydraulic cylinder 401. The four ends of the descending plate 402 are rotatably connected to the connecting frame 403, and the lower end of the connecting frame 403 is rotatably connected to the X-shaped frame 404, one end of the lower part of the X-shaped frame 404 is rotatably connected to the bottom plate 405, and the other end of the X-shaped frame 404 is rotatably connected to the slider 406, the inside of the slider 406 is slidably connected to the slide bar 407, and the top of the slide bar 407 located at the upper part of the X-shaped frame 404 is fixed with a lifting frame 408, and a bottom roller 409 is arranged inside the lifting frame 408, a fan cover 5 is fixed to the center of the interior of the lifting plate 402, and an aerosol generator 6 is connected to one side of the fan cover 5.

[0029] See also Figures 1 to 3, positioning components 7 are arranged at both ends of the bottom of the lifting plate 402, and the positioning component 7 includes a guide groove 701, a slide column 702, a positioning plate 703 and a light rod 704. Guide grooves 701 are symmetrically provided on both sides of the frame 3, and the guide grooves 701 are slidably connected with the slide column 702 inside, and a positioning plate 703 is fixed at one end of the slide column 702, and the upper end of the positioning plate 703 is slidably connected with the light rod 704, and the light rod 704 is fixedly connected to the lifting plate 402, the positioning component 7 also includes a screw rod 705, a clamping plate 706 and a guide rod 707, the middle part of the positioning plate 703 is threadedly connected with the screw rod 705, and one end of the screw rod 705 is rotatably connected with the clamping plate 706, one end of the clamping plate 706 is symmetrically arranged with a guide rod 707, and the guide rod 707 is slidably connected to the positioning plate 703;

[0030] The specific operation is as follows. Before use, the screw rod 705 can be rotated. At this time, the guide rod 707 will guide the clamping plate 706, so as to adjust the actual spacing between the two clamping plates 706 after positioning, which is beneficial to expand the adaptation range of the positioning assembly 7. After the FFU device is moved to the bottom of the fan cover 5, the hydraulic cylinder 401 will drive the lifting plate 402 to move downward, so that the fan cover 5 can be placed at the top opening of the FFU device. When the lifting plate 402 moves downward, the positioning plate 703 can move along the path of the guide groove 701 through the sliding column 702 and the light rod 704 to center the FFU device and automatically correct its deviation to avoid the FFU device from being skewed and affecting the docking effect of the fan cover 5 and the FFU device. After docking, when the aerosol generator 6 generates particles, the fan inside the upper end of the fan cover 5 will work, and the air containing the aerosol particles will be sent to the inside of the FFU device, so as to detect the content of the particles passing through on the other side, thereby judging the FFU device. Whether the FU device is damaged or leaking is beneficial to improving the convenience of detection. At the same time, when the lifting plate 402 moves down, the X-shaped frame 404 is pushed by the connecting frame 403, so that the slider 406 slides on the outside of the slide bar 407, and the lifting frame 408 can be moved down, reducing the height of the lifting frame 408, so that the next FFU device to be detected can be moved to the lifting frame 408, or the FFU device on the other side can be unloaded. After the detection, when the hydraulic cylinder 401 drives the lifting plate 402 to move up, it will also drive the positioning plate 703 to move up through the light rod 704. At this time, the sliding column 702 will slide inside the guide groove 701, so that the positioning plate 703 moves obliquely upward to avoid affecting the unloading operation of the FFU device. Similarly, the lifting frame 408 moves up, and after stopping the movement, the support rod 2 and the bottom roller 409 can be used to improve the convenience of the FFU device when moving, so that the FFU device can be replaced, thereby saving more effort in the process of loading and unloading.

[0031] See also Figures 4 to 6, a detection assembly 8 is provided at the lower end of the inner part of the workbench 1, and the detection assembly 8 includes a bottom frame 801, a double-axis motor 802, a first bevel gear set 803 and a reciprocating screw 804. The double-axis motor 802 is fixed to one side of the bottom frame 801, and the first bevel gear set 803 is provided at the end of the double-axis motor 802. The reciprocating screw 804 is connected to one end of the first bevel gear set 803, and the reciprocating screw 804 is rotatably connected to the bottom frame 801. The detection assembly 8 also includes a slide 805, an adjustment seat 806 and an aerosol photometer 807. The slide 805 is provided on the outer side of the reciprocating screw 804, and one end of the slide 805 An adjustment seat 806 is sleeved on the outside, and an aerosol photometer 807 is fixed inside the adjustment seat 806. The detection component 8 also includes a pulley frame 808, a limit block 809 and a guide block 810. The outside of the adjustment seat 806 is slidably connected to the pulley frame 808, and the limit blocks 809 are arranged on both sides of the inside of the bottom frame 801, and the guide blocks 810 are fixed at the inner corners of the bottom frame 801. The bottom of the bottom frame 801 is fixed with a rotating component 9, and the rotating component 9 includes a second bevel gear set 901, a transmission rod 902 and a first gear ring 903. One end of the reciprocating screw 804 is provided with a second bevel gear set 901, and the second The bottom of the bevel gear set 901 is connected with a transmission rod 902, which is rotatably connected to the bottom frame 801, and the middle part of the transmission rod 902 is in the shape of a hexagonal prism, and the outer side of the middle part of the transmission rod 902 is slidably connected with a first gear ring 903. The rotating assembly 9 also includes a limit plate 904, a spring seat 905 and an extrusion plate 906. The outer side of the first gear ring 903 is rotatably connected to the limit plate 904, and a spring seat 905 is arranged at one end of the top of the limit plate 904, and the spring seat 905 is fixedly connected to the bottom frame 801, and an extrusion plate 906 is arranged at one end of the top of the limit plate 904. The rotating assembly 9 also includes a top Block 907, idle gear 908 and second gear ring 909, a top block 907 is fixed to one end of the top of the adjustment seat 806, and the top block 907 is in a right angle shape, the bottom of the transmission rod 902 is rotatably connected with the idle gear 908, and the top of the idle gear 908 is fixed with the second gear ring 909, the rotating assembly 9 also includes a transmission gear 910, a driving gear 911 and a pillar 912, one side of the idle gear 908 is meshed with the transmission gear 910, and the transmission gear 910 is rotatably connected to the bottom frame 801, and the interior of the transmission gear 910 is fixed with a pillar 912, and the pillar 912 is rotatably connected to the bottom frame 801;

[0032] The specific operation is as follows: the dual-axis motor 802 drives the slide 805 to move back and forth through the first bevel gear set 803 and the reciprocating screw 804, so that the aerosol photometer 807 on the adjustment seat 806 can scan and detect the bottom of the FFU device, and when the slide 805 drives the adjustment seat 806 to move toward the limit block 809, since the limit block 809 is a triangle with two layers of sharp corners facing opposite directions, it will squeeze the pulley frame 808, so that it drives the adjustment seat 806 to move on the slide 805, so that the position of the adjustment seat 806 on the slide 805 is automatically changed during the reciprocating movement of the slide 805. Thereby, a line-by-line scanning detection of the bottom of the FFU device is realized, and during the movement, there is a certain friction resistance between the adjustment seat 806 and the slide seat 805, which can play a damping role, thereby avoiding excessive sliding positions due to inertia, and when the adjustment seat 806 moves to the guide block 810 at the corner, the height of the pulley frame 808 can be automatically changed to make it contact with the limit block 809 of another layer. At the same time, there is also a large friction between the pulley frame 808 and the adjustment seat 806, so the adjusted height can be maintained, so that during the detection process, the detection range of the aerosol generator 6 covers the FFU device. The bottom of the device is arranged to avoid missed detection. When the aerosol photometer 807 performs a complete reciprocating sweep on the bottom of the FFU device, the adjustment seat 806 will move toward the extrusion plate 906. At this time, the top block 907 can be used to push the extrusion plate 906, so that the limit plate 904 drives the first gear ring 903 to move downward and insert it into the second gear ring 909. At this time, the reciprocating screw 804 can drive the transmission gear 910 to roll on the driving gear 911 through the second bevel gear set 901, the transmission rod 902, the first gear ring 903, the second gear ring 909, and the idle gear 908, thereby driving the bottom frame 801 rotates on the support 912, and after rotating a quarter of a turn, the top block 907 will separate from the extrusion plate 906, and the spring seat 905 will pull the limit plate 904, thereby driving the first gear ring 903 to separate from the second gear ring 909. At this time, since the support 912 and the bottom frame 801 are connected by a damping shaft, they will stop rotating under resistance after separation, so that the bottom frame 801 can stop rotating after rotating a quarter of a turn, so that the flat probe of the aerosol photometer 807 can automatically detect leaks at the bottom of the FFU device again after changing its direction, thereby further reducing the leak detection error of the FFU device.

[0033] In summary, when the leak detection device of the FFU device which is convenient for deviation correction is used, firstly, the hydraulic cylinder 401 drives the lifting plate 402 to move downward, and pushes the X-shaped frame 404 through the connecting frame 403, so that the slider 406 slides on the outside of the slide rod 407, and the lifting frame 408 can be moved downward, and the height of the lifting frame 408 can be lowered, so that the next FFU device to be detected can be moved onto the lifting frame 408, and then, the hydraulic cylinder 401 drives the lifting plate 402 to move upward, and similarly, the lifting frame 408 moves upward, and in this process, the lifting plate 402 will also drive the positioning plate 703 to move upward through the light rod 704, and at this time, the sliding column 702 will slide inside the guide groove 701, so that the positioning plate 703 moves obliquely upward, and after stopping moving, the support rod 2 and the bottom The roller 409 improves the convenience of moving the FFU device so that the FFU device can be moved to the bottom of the fan cover 5. Then, the hydraulic cylinder 401 drives the lifting plate 402 to move downward, so that the fan cover 5 can be placed at the top opening of the FFU device. During this process, the positioning plate 703 can also move along the path of the guide groove 701 to center the FFU device, and the screw rod 705 can be rotated before use. At this time, the guide rod 707 will guide the clamping plate 706 to adjust the actual distance between the two clamping plates 706 after positioning. When the aerosol generator 6 (model 3990-03) generates particles, the fan inside the upper end of the fan cover 5 will work, and the air containing the aerosol particles will be sent to the inside of the FFU device. At this time, the other side is used The aerosol photometer 807 will detect the content of particles passing through, so as to determine whether there is any damage or leakage at that position. Then, the dual-axis motor 802 will drive the slide 805 to move back and forth through the first bevel gear set 803 and the reciprocating screw 804, so that the aerosol photometer 807 (model: HD-APM283) on the adjustment seat 806 can scan and detect the bottom of the FFU device, and when the slide 805 drives the adjustment seat 806 to move toward the limit block 809, since the limit block 809 is in the shape of a triangle with two sharp corners facing opposite directions, it will squeeze the pulley frame 808, so that it drives the adjustment seat 806 to move on the slide 805, so that in the process of the reciprocating movement of the slide 805, the position of the adjustment seat 806 on the slide 805 is automatically changed, so as to The bottom of the FFU device is scanned row by row to detect it. When the adjusting seat 806 moves to the guide block 810 at the corner, the height of the pulley frame 808 can be automatically changed to make it contact with the limit block 809 of another layer. At the same time, there is a large friction between the pulley frame 808 and the adjusting seat 806, so the adjusted height can be maintained. In the detection process, the detection range of the aerosol generator 6 covers the bottom of the FFU device. Afterwards, when the aerosol photometer 807 performs a complete reciprocating sweep on the bottom of the FFU device, the adjusting seat 806 will move toward the extrusion plate 906. At this time, the top block 907 can be used to push the extrusion plate 906, so that the limit plate 904 drives the first gear ring 903 to move downward and insert it into the second gear ring 909.At this time, the reciprocating screw 804 can drive the transmission gear 910 to roll on the driving gear 911 through the second bevel gear set 901, the transmission rod 902, the first gear ring 903, the second gear ring 909, and the idle gear 908, thereby driving the bottom frame 801 to rotate on the support 912, and after rotating a quarter of a turn, the top block 907 will separate from the extrusion plate 906, and the spring seat 905 will pull the limit plate 904, thereby driving the first gear ring 903 and the second gear ring 909 to separate, so that the flat probe of the aerosol photometer 807 automatically detects leaks at the bottom of the FFU device again after changing its direction, further reducing the leak detection error of the FFU device. Finally, during the detection process, the lifting frame 408 can also be loaded, thereby improving the efficiency of the FFU device detection in the subsequent repeated leak detection operation.

[0034] The embodiments of the present invention are given for the purpose 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 of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A leak detection device for an FFU device that is convenient for deviation correction, characterized in that: The invention comprises a workbench (1) and a lifting assembly (4), wherein a support rod (2) is rotatably connected to the upper end of the workbench (1), and a frame (3) is fixed on the top of the workbench (1). The lifting assembly (4) is arranged inside the frame (3), and the lifting assembly (4) comprises a hydraulic cylinder (401), a lifting plate (402), a connecting frame (403), an X-shaped frame (404), a bottom plate (405), a slider (406), a sliding rod (407), a lifting frame (408) and a bottom roller (409). The top of the frame (3) is provided with a hydraulic cylinder (401), and the bottom of the hydraulic cylinder (401) is connected to the lifting plate (402). The four ends of the lifting plate (402) are connected to the lifting plate (402). The end of the lifting plate (402) is rotatably connected to a connecting frame (403), and the lower end of the connecting frame (403) is rotatably connected to an X-shaped frame (404), one end of the lower part of the X-shaped frame (404) is rotatably connected to a bottom plate (405), and the other end of the X-shaped frame (404) is rotatably connected to a slider (406), the inside of the slider (406) is slidably connected to a sliding rod (407), and a lifting frame (408) is fixed on the top of the sliding rod (407) located at the upper part of the X-shaped frame (404), and a bottom roller (409) is arranged inside the lifting frame (408), and a fan cover (5) is fixed at the center of the interior of the lifting plate (402), and an aerosol generator (6) is connected to one side of the fan cover (5).

2. A leak detection device for an FFU device that is easy to correct according to claim 1, characterized in that: Positioning assemblies (7) are arranged at both ends of the bottom of the lifting plate (402), and the positioning assembly (7) includes a guide groove (701), a sliding column (702), a positioning plate (703) and a light rod (704). The guide grooves (701) are symmetrically opened on both sides of the frame (3), and the guide grooves (701) are internally slidably connected with the sliding column (702). One end of the sliding column (702) is fixed with a positioning plate (703), and the upper end of the positioning plate (703) is internally slidably connected with the light rod (704), and the light rod (704) is fixedly connected to the lifting plate (402).

3. A leak detection device for an FFU device that facilitates deviation correction according to claim 2, characterized in that: The positioning assembly (7) further comprises a screw (705), a clamping plate (706) and a guide rod (707); the middle part of the positioning plate (703) is threadedly connected to the screw (705), and one end of the screw (705) is rotatably connected to the clamping plate (706); one end of the clamping plate (706) is symmetrically provided with a guide rod (707), and the guide rod (707) is slidably connected to the positioning plate (703).

4. A leak detection device for an FFU device that facilitates deviation correction according to claim 1, characterized in that: A detection assembly (8) is arranged at the lower end of the workbench (1), and the detection assembly (8) comprises a bottom frame (801), a double-axis motor (802), a first bevel gear set (803) and a reciprocating screw (804); the double-axis motor (802) is fixed to one side of the bottom frame (801), and the first bevel gear set (803) is arranged at the end of the double-axis motor (802); one end of the first bevel gear set (803) is connected to the reciprocating screw (804), and the reciprocating screw (804) is rotatably connected to the bottom frame (801).

5. A leak detection device for an FFU device that facilitates deviation correction according to claim 4, characterized in that: The detection assembly (8) further comprises a slide seat (805), an adjustment seat (806) and an aerosol photometer (807); the slide seat (805) is arranged on the outer side of the reciprocating screw (804); the adjustment seat (806) is sleeved on the outer side of one end of the slide seat (805); and the aerosol photometer (807) is fixed inside the adjustment seat (806).

6. A leak detection device for an FFU device that facilitates deviation correction according to claim 5, characterized in that: The detection assembly (8) further comprises a pulley frame (808), a limit block (809) and a guide block (810); the outer side of the adjustment seat (806) is slidably connected to the pulley frame (808); the limit blocks (809) are arranged on both sides of the interior of the bottom frame (801); and the guide block (810) is fixed to the inner corner of the bottom frame (801).

7. The leak detection device for an FFU device that is convenient for deviation correction according to claim 5, characterized in that: A rotating assembly (9) is fixed at the bottom of the bottom frame (801), and the rotating assembly (9) comprises a second bevel gear set (901), a transmission rod (902) and a first gear ring (903). The second bevel gear set (901) is arranged at one end of the reciprocating screw (804), and the bottom of the second bevel gear set (901) is connected to the transmission rod (902), the transmission rod (902) is rotatably connected to the bottom frame (801), the middle part of the transmission rod (902) is in the shape of a hexagonal prism, and the first gear ring (903) is slidably connected to the outer side of the middle part of the transmission rod (902).

8. The leak detection device for an FFU device that is convenient for deviation correction according to claim 7, characterized in that: The rotating assembly (9) further comprises a limit plate (904), a spring seat (905) and an extrusion plate (906); the outer side of the first gear ring (903) is rotatably connected to the limit plate (904); a spring seat (905) is arranged at one end of the top of the limit plate (904); the spring seat (905) is fixedly connected to the bottom frame (801); and an extrusion plate (906) is arranged at one end of the top of the limit plate (904).

9. A leak detection device for an FFU device that facilitates deviation correction according to claim 8, characterized in that: The rotating assembly (9) further comprises a top block (907), an idle gear (908) and a second gear ring (909); a top block (907) is fixed to one end of the top of the adjusting seat (806), and the top block (907) is in a right-angle shape; the bottom of the transmission rod (902) is rotatably connected to the idle gear (908), and a second gear ring (909) is fixed to the top of the idle gear (908).

10. A leak detection device for an FFU device that facilitates deviation correction according to claim 9, characterized in that: The rotating assembly (9) further comprises a transmission gear (910), a driving gear (911) and a support (912); one side of the idle gear (908) is meshed with the transmission gear (910), and the transmission gear (910) is rotationally connected to the bottom frame (801); a support (912) is fixed inside the transmission gear (910), and the support (912) is rotationally connected to the bottom frame (801).

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