Equipment for detecting PTFE (Polytetrafluoroethylene) quality of lining of large container in chemical industry

Abstract

The invention relates to the technical field of PTFE detection, and discloses chemical industry large container lining PTFE quality detection equipment which comprises a supporting assembly, a positioning assembly is arranged in the middle of the top end of the supporting assembly, a movable plate is arranged in the middle of the top side of the positioning assembly, and a positioning clamping mechanism is arranged on the inner side of the top of the movable plate. An adjusting and detecting mechanism is arranged at the right end of the positioning and clamping mechanism, and an auxiliary mechanism is arranged on the inner ring of the positioning and clamping mechanism. By constructing a supporting-positioning-clamping-detecting-controlling integrated collaborative system, the adaptability and positioning and clamping stability of the large containers in the chemical industry are remarkably improved, the supporting assemblies provide a stable bearing foundation for the overall structure, and the supporting assemblies can be flexibly moved in place in cooperation with the universal wheels at the bottom end and adapt to the large containers at different placement positions. The positioning assembly and the positioning clamping mechanism cooperate with each other, and the first L-shaped support is designed to slide along the main shaft for adjustment and is matched with the annular array clamping blocks driven by the folding frame.

Description

Technical Field

[0001] This invention relates to the field of PTFE testing technology, specifically to a quality testing device for PTFE linings of large containers in the chemical industry. Background Technology

[0002] In the chemical industry, PTFE linings for large containers are widely used in corrosive media storage and reaction scenarios due to their excellent corrosion resistance and high temperature resistance. Their quality is directly related to production safety and product quality, making accurate quality testing crucial.

[0003] However, existing testing equipment generally lacks a coordinated "support-positioning-clamping" design, resulting in extremely poor adaptability and positioning stability: most equipment has a fixed support structure and insufficient mobility, making it difficult to adapt to large containers placed in different locations, and it has poor compatibility with containers of different diameters, requiring customized clamping components.

[0004] Most clamping mechanisms are rigid fixed structures that cannot be adaptively adjusted. The clamping force depends on human experience, which can easily lead to damage to the container / liner due to excessive tightness or detection deviation due to excessive looseness. Furthermore, the lack of a pressure feedback control mechanism further exacerbates the instability of positioning and clamping.

[0005] Meanwhile, the design of existing testing equipment has significant limitations, resulting in low comprehensiveness, accuracy, and efficiency in testing: Most testing components are designed with fixed angles and depths, unable to achieve 360° rotation and axial extension, limiting the testing range and creating blind spots; the testing function is limited, only capable of single-dimensional testing, lacking auxiliary mechanisms for coordination, and unable to simultaneously collect multi-dimensional data. Each step relies on manual operation, lacking a centralized intelligent control system, resulting in poor component coordination and requiring frequent manual intervention and adjustments. This not only leads to high labor intensity and human error but also significantly reduces testing efficiency, making it difficult to meet the testing needs of modern, high-efficiency industrial production. Summary of the Invention

[0006] The purpose of this invention is to address the problems of poor adaptability and unstable positioning caused by the lack of a coordinated "support-positioning-clamping" design in existing PTFE testing equipment for large chemical industry containers, as well as the problems of insufficient comprehensiveness and accuracy of testing, low efficiency, and frequent manual intervention due to the lack of a centralized intelligent control system. This invention provides a quality testing device for PTFE lining of large chemical industry containers.

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution: A quality testing device for PTFE lining of large chemical containers includes a support assembly. A positioning component is located at the top center of the support assembly. A movable plate is located at the top center of the positioning component. A positioning clamping mechanism is located on the top inner side of the movable plate. An adjustment and testing mechanism is located at the right end of the positioning clamping mechanism. An auxiliary mechanism is located on the inner ring of the positioning clamping mechanism. The right end of the auxiliary mechanism and the left end of the adjustment and testing mechanism are axially connected. A PLC controller is located on the front side of the support assembly. A caster wheel is located at the bottom of the support assembly.

[0008] Furthermore, the support assembly includes a support body, a slide rod, a support frame, and a lifting electric cylinder. The bottom end of the positioning component is located on the top side of the support body, the universal wheel is located on the bottom end of the slide rod, the top end of the lifting electric cylinder is fixed to the axis of the support frame, and the bottom end is fixed to the axis of the bottom end of the slide rod. After activation, it can drive the support body to slide up and down along the slide rod, thereby driving the positioning component, positioning clamping mechanism, and other components at the top to rise and fall synchronously.

[0009] Furthermore, the bottom outer side of the support body is slidably connected to the top inner side of the slide rod, the support frame is disposed on the top inner side of the support body, the top of the lifting electric cylinder is fixedly connected to the axis of the support frame, the bottom end of the lifting electric cylinder is fixedly connected to the bottom axis of the slide rod, the support body slides up and down along the slide rod, thereby driving the positioning component, positioning clamping mechanism and other components at the top to rise and fall synchronously.

[0010] Furthermore, the positioning component includes a support plate, a grating ruler, a shifter, and a transverse electric cylinder. The bottom side of the support plate is disposed on the top side of the support component, the bottom side of the grating ruler is disposed on the top side of the support plate, the bottom of the shifter is slidably connected to the support plate and the top side of the grating ruler, the outer end of the transverse electric cylinder is disposed on the outer end of the top side of the support plate, the inner end of the transverse electric cylinder is connected to the outer end of the shifter, the support plate of the positioning component is fixed to the top side of the support component, and after the transverse electric cylinder is activated, it can drive the shifter to slide along the grating ruler on the top side of the support plate. The grating ruler provides real-time feedback on the displacement data of the shifter and transmits it to the PLC controller.

[0011] Furthermore, the positioning and clamping mechanism includes a main shaft, an L-shaped bracket, and a clamping assembly. The inner end of the L-shaped bracket is slidably inserted into the inner side wall of the main shaft, and the outer end of the L-shaped bracket is connected to the side end of the clamping assembly. After activation, the L-shaped bracket slides along the outer side wall of the main shaft to adjust the spacing, thereby driving the clamping assembly closer to the container port.

[0012] Furthermore, the clamping assembly includes a support block, a clamping block, a folding frame, a rubber liner, and a pressure sensor. The support block is disposed at the front and rear ends of the entire clamping assembly. The clamping blocks are arranged in a ring around the clamping assembly. The folding frame penetrates the interior of the clamping block and extends and retracts in conjunction with the ring-arranged clamping blocks, so that the clamping blocks accurately fit the outer wall of the container port.

[0013] Furthermore, the adjustment and detection mechanism includes a rotary motor, a rotating shaft, a push cylinder, an L-shaped bracket II, and a sealing detection component. The rotary motor is located at the rightmost end of the positioning and clamping mechanism. The rotating shaft passes through and is rotatably connected to the axis of the positioning and clamping mechanism. The inner end of the auxiliary mechanism is fixedly connected to the inner wall of the sealing detection component. When the rotary motor at the right end of the positioning and clamping mechanism is started, its output end drives the rotating shaft to rotate, and the rotating shaft in turn drives the push cylinder, L-shaped bracket II, and sealing detection component at the rear end to rotate synchronously.

[0014] Furthermore, the output end of the rotary motor is connected to one side of the rotating shaft, the outer end of the push cylinder is fixedly connected to the rear side of the rotating shaft, the rear end of the push cylinder is connected to the right end of the L-shaped bracket II, and the left end of the L-shaped bracket II is fixedly connected to the right end of the sealing detection assembly. When the push cylinder is activated, it can push the L-shaped bracket II to extend and retract back and forth, thereby driving the sealing detection assembly to move back and forth along the container axis, so as to realize the flexible adjustment of the detection depth.

[0015] Furthermore, the sealing detection assembly includes an ultrasonic transducer and a probe. The left end of the L-shaped bracket II is fixedly connected to the right end of the ultrasonic transducer. The probe is disposed on the outer wall surface of the ultrasonic transducer. The ultrasonic transducer of the sealing detection assembly contacts the PTFE liner surface of the container through the probe. After activation, it emits an ultrasonic signal, which is received by the probe after being reflected by the PTFE liner.

[0016] Furthermore, the auxiliary mechanism includes a visual detection component and a spraying component, both of which are fixedly connected to the inner left end of the adjustment detection mechanism.

[0017] Furthermore, the visual inspection component includes a connecting frame, a ring LED fill light, and a high-definition industrial camera. The outer end of the connecting frame is fixedly connected to the inner side of the adjustment and inspection mechanism. The ring LED fill light is disposed on the side wall of the connecting frame, and the high-definition industrial camera is disposed on the inner end of the connecting frame. When the ring LED fill light of the visual inspection component is turned on, it provides supplementary lighting for the inspection area. The high-definition industrial camera is fixed to the inner side of the adjustment and inspection mechanism through the connecting frame, and can capture images of the lining surface in real time to identify surface defects such as scratches, pinholes, and bubbles.

[0018] Furthermore, the spraying assembly includes a support group, a water tank, water pipes, a rinsing head, and a detection liquid spraying head. The inner end of the support group is fixedly connected to the inner side wall of the adjustment and detection mechanism. The water tank is located at the axis of the adjustment and detection mechanism. The outer end of the support group passes through the side wall of the water pipe. The two sets of water pipes are respectively connected to the side walls of the two sets of water tanks through connecting pipes. The rinsing head and the detection liquid spraying head are respectively arranged in a circular array on the side walls of the two sets of circular water pipes. The detection liquid spraying head sprays ultrasonic coupling agent into the detection area in a circular array to ensure the accuracy of ultrasonic detection. After the detection is completed, the clean water in the water tank is transported to the rinsing head through the water pipe. The rinsing head in the circular array rinses the detection area to remove residual media.

[0019] Compared with the prior art, the present invention provides a quality testing device for PTFE lining of large containers in the chemical industry, which has the following beneficial effects: 1. This PTFE lining quality inspection equipment for large chemical industry containers significantly improves adaptability and positioning stability by constructing an integrated collaborative system of "support-positioning-clamping-inspection-control". The support component provides a stable load-bearing foundation for the overall structure and, with the bottom casters, can be flexibly moved and positioned to accommodate large containers in different placement positions. The positioning component and positioning clamping mechanism work together. The L-shaped bracket with its sliding adjustment design along the main axis, combined with the ring array clamping blocks driven by the folding frame, can adapt to container ports of different diameters, achieving adaptive clamping. The rubber lining inside the clamping blocks prevents damage to the container surface. Pressure sensors provide real-time feedback on clamping pressure and transmit it to the PLC controller, ensuring moderate and uniform clamping force, effectively preventing damage to the container from excessive clamping or detection deviation due to excessive looseness.

[0020] 2. This PTFE lining quality testing equipment for large chemical industrial containers significantly improves the comprehensiveness, accuracy, and efficiency of PTFE lining quality testing through the coordinated design of the adjustment testing mechanism and auxiliary mechanisms. The 360° rotation function driven by the rotary motor and the axial extension function achieved by the electric cylinder in the adjustment testing mechanism can drive the sealing testing components to cover the entire container lining. The ultrasonic transducer, through the probe on the outer wall, can comprehensively detect the uniformity of the lining thickness and the density of the adhesion. Simultaneously, the axial connection design between the auxiliary mechanism and the adjustment testing mechanism allows them to work synchronously in conjunction with the testing operation, providing auxiliary support and multi-dimensional data acquisition during the testing process. Combined with centralized control by the PLC controller, it achieves automated and coordinated operation of each stage, eliminating the need for frequent manual intervention. This effectively solves the problems of poor adaptability, inaccurate positioning, limited testing range, and low efficiency of traditional testing equipment. Attached Figure Description

[0021] Figure 1 The image shows a three-dimensional view of the front right end of the overall outer structure of this invention.

[0022] Figure 2 The image shows a three-dimensional view of the front left end of the overall outer structure of this invention.

[0023] Figure 3 A three-dimensional perspective view of the top structure of the positioning component of this invention.

[0024] Figure 4 A three-dimensional view of the right end structure of the support component of this invention is shown.

[0025] Figure 5 A three-dimensional view of the positioning and clamping mechanism of the present invention is shown.

[0026] Figure 6 This is a schematic diagram of the left end of the clamping mechanism of the present invention.

[0027] Figure 7 This is a schematic diagram of the internal structural connections of the adjustment and detection mechanism of the present invention.

[0028] Figure 8 A three-dimensional perspective view is provided to illustrate the sealing detection component and auxiliary mechanism structure of the present invention.

[0029] Figure 9 A three-dimensional image showing the internal structure of the visual inspection component of this invention.

[0030] Figure 10 This is a three-dimensional perspective view showing the structure of the jet assembly of the present invention located inside the super-god transducer.

[0031] Figure 11 A three-dimensional perspective view is provided to illustrate the internal structure of the spray assembly of this invention.

[0032] In the diagram: 1. Support assembly. 11. Support body. 12. Slide rod. 13. Support frame. 14. Lifting electric cylinder. 2. Positioning assembly. 21. Support plate. 22. Grating ruler. 23. Moving seat. 24. Lateral electric cylinder. 3. Movable plate. 4. Positioning and clamping mechanism. 41. Main shaft. 42. L-shaped bracket one. 43. Clamping assembly. 431. Support block. 432. Clamping block. 433. Folding frame. 434. Rubber liner. 435. Pressure sensor. 5. Adjustment and detection mechanism. 51. Rotary motor. 52. Rotating shaft. 53. Pushing electric cylinder. 54. L-shaped bracket two. 55. Sealing detection assembly. 551. Ultrasonic transducer. 552. Probe. 6. Auxiliary mechanism. 61. Visual inspection assembly. 611. Connecting frame. 612. Ring LED supplementary light. 613. High-definition industrial camera. 62. Spray assembly. 621. Support assembly. 622. Water tank. 623. Water pipe. 624. Flushing head. 625. Liquid detection spray head. 7. PLC controller. 8. Casters. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1:

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, a quality testing device for PTFE lining of large chemical containers includes a support assembly 1. The support assembly 1 includes a support body 11, a slide rod 12, a support frame 13, and a lifting cylinder 14. The bottom outer side of the support body 11 is slidably connected to the top inner side of the slide rod 12. The support frame 13 is located on the top inner side of the support body 11. The top of the lifting cylinder 14 is fixedly connected to the axis of the support frame 13, and the bottom of the lifting cylinder 14 is fixedly connected to the bottom axis of the slide rod 12. The top of the lifting cylinder 14 is fixed to the axis of the support frame 13, and the bottom is fixed to the bottom axis of the slide rod 12. After starting, it can drive the support body 11 to slide up and down along the slide rod 12, thereby driving the positioning assembly 2, positioning clamping mechanism 4, and other components at the top to rise and fall synchronously until the testing mechanism 5 is adjusted to be at the same level as the container port, meeting the height adaptation requirements of the testing operation. Finally, the casters 8 are locked to ensure the stability of the equipment.

[0035] like Figure 1 and Figure 3 As shown, a positioning component 2 is provided at the top center of the support component 1, and the bottom end of the positioning component 2 is provided on the top side of the support body 11. The positioning component 2 includes a support plate 21, a grating ruler 22, a shift seat 23, and a transverse electric cylinder 24. The bottom side of the support plate 21 is provided on the top side of the support component 1, the bottom side of the grating ruler 22 is provided on the top side of the support plate 21, the bottom of the shift seat 23 is slidably connected to the top side of the support plate 21 and the grating ruler 22, the outer end of the transverse electric cylinder 24 is provided on the outer end of the top side of the support plate 21, and the inner end of the transverse electric cylinder 24 is connected to the outer end of the shift seat 23. The positioning component 2 enables precise transverse alignment between the detection mechanism and the container. The support plate 21 of the positioning component 2 is fixed to the top side of the support component 1. After the horizontal electric cylinder 24 is started, it can drive the shift seat 23 to slide along the grating ruler 22 on the top side of the support plate 21. The grating ruler 22 provides real-time feedback on the displacement data of the shift seat 23 and transmits it to the PLC controller 7, ensuring that the shift seat 23 drives the top movable plate 3, the positioning clamping mechanism 4 and the adjustment and detection mechanism 5 to move accurately in the horizontal direction.

[0036] like Figure 1 , Figure 5 and Figure 6As shown, a movable plate 3 is provided at the top center of the positioning component 2, and a positioning clamping mechanism 4 is provided on the top inner side of the movable plate 3. The positioning clamping mechanism 4 includes a main shaft 41, an L-shaped bracket 42, and a clamping component 43. The inner end of the L-shaped bracket 42 is slidably inserted into the inner side wall of the main shaft 41, and the outer end of the L-shaped bracket 42 is connected to the side end of the clamping component 43. The clamping component 43 includes a support block 431, a clamping block 432, a folding frame 433, a rubber liner 434, and a pressure sensor 435. The support block 431 is located at the front and rear ends of the entire clamping component 43. The clamping blocks 432 are arranged in a ring around the clamping component 43. The folding frame 433 penetrates the interior of the clamping block 432 and holds the interior of the clamping block 432. The L-shaped bracket 41 slides along the outer side wall of the main shaft 41 to adjust the spacing, thereby driving the clamping component 43 closer to the container port. The folding frame 433 of the clamping assembly 43 extends and retracts in conjunction with the clamping blocks 432 in a ring array, so that the clamping blocks 432 precisely fit the outer wall of the container port. At the same time, the rubber liner 434 on the inner side of the clamping blocks 432 can avoid damaging the container surface, and the embedded pressure sensor 435 detects the clamping pressure in real time and feeds it back to the PLC controller 7 to ensure that the clamping force is moderate and uniform.

[0037] like Figure 1 , Figure 7 and Figure 8 As shown, an adjustment and detection mechanism 5 is provided at the right end of the positioning and clamping mechanism 4. The adjustment and detection mechanism 5 includes a rotary motor 51, a rotating shaft 52, a push cylinder 53, an L-shaped bracket 54, and a sealing detection component 55. The rotary motor 51 is located at the rightmost end of the positioning and clamping mechanism 4. The rotating shaft 52 passes through and is rotatably connected to the axis of the positioning and clamping mechanism 4. The output end of the rotary motor 51 is connected to one side of the rotating shaft 52. The outer end of the push cylinder 53 is fixedly connected to the rear side of the rotating shaft 52. The rear end of the push cylinder 53 is connected to the right end of the L-shaped bracket 54. The left end of the L-shaped bracket 54 is connected to the sealing detection component 55. The right end of the sealing detection assembly 55 is fixedly connected to the ultrasonic transducer 551 and the probe 552. The left end of the L-shaped bracket 54 is fixedly connected to the right end of the ultrasonic transducer 551. The probe 552 is set on the outer wall surface of the ultrasonic transducer 551. The rotary motor 51 at the right end of the positioning clamping mechanism 4 is started, and its output end drives the rotating shaft 52 to rotate. The rotating shaft 52 then drives the rear push cylinder 53, the L-shaped bracket 54 and the sealing detection assembly 55 to rotate synchronously. This can realize the 360° angle adjustment of the sealing detection assembly 55 inside the container, which can adapt to the detection needs of different circumferential positions on the inner wall of the container. Example 2:

[0038] like Figure 1 and Figures 8-11As shown, the inner ring of the positioning and clamping mechanism 4 is provided with an auxiliary mechanism 6. The right end of the auxiliary mechanism 6 is axially connected to the left end of the adjustment and detection mechanism 5. The inner end of the auxiliary mechanism 6 is fixedly connected to the inner wall of the sealing and detection assembly 55. The auxiliary mechanism 6 includes a vision inspection assembly 61 and a spray assembly 62. Both the vision inspection assembly 61 and the spray assembly 62 are fixedly connected to the inner left end of the adjustment and detection mechanism 5. The vision inspection assembly 61 includes a connecting frame 611, a ring LED fill light 612, and a high-definition industrial camera 613. The outer end of the connecting frame 611 is fixedly connected to the inner side of the adjustment and detection mechanism 5. The ring LED fill light 612 is located on the side wall of the connecting frame 611. The high-definition industrial camera 613 is located at the inner end of the connecting frame 611. The spray assembly 62 includes a support group 621. The water tank 622, water pipe 623, rinsing head 624, and detection liquid spray head 625 are all included. The inner end of the support group 621 is fixedly connected to the inner side wall of the adjustment and detection mechanism 5. The water tank 622 is located at the axis of the adjustment and detection mechanism 5. The outer end of the support group 621 passes through the side wall of the water pipe 623. The two sets of water pipes 623 are respectively connected to the side walls of the two sets of water tanks 622 through connecting pipes. The rinsing head 624 and the detection liquid spray head 625 are respectively arranged in a ring array on the side walls of the two sets of ring water pipes 623. The ring LED supplement light 612 of the vision inspection component 61 provides supplementary lighting for the inspection area after being turned on. The high-definition industrial camera 613 is fixed to the inner side of the adjustment and detection mechanism 5 through the connecting bracket 611. It can capture images of the inner lining surface in real time and identify surface defects such as scratches, pinholes, and bubbles. The spraying assembly 62 can provide assistance according to the testing requirements: before testing, ultrasonic coupling agent (or corrosion resistance testing liquid) is sprayed into the ring array of the testing area through the testing liquid spray head 625 to ensure the accuracy of ultrasonic testing (or to achieve rapid corrosion resistance testing). After testing, the clean water in the water tank 622 is transported to the rinsing head 624 through the water pipe 623. The rinsing head 625 of the ring array rinses the testing area to remove residual media.

[0039] like Figures 1-4 As shown, a PLC controller 7 is installed on the front side of the support component 1, and a caster wheel 8 is installed at the bottom of the support component 1. The caster wheel 8 is located at the bottom of the slide bar 12. During the entire testing process, the PLC controller 7 acts as the core control unit, receiving displacement data from the grating ruler 22, clamping pressure data from the pressure sensor 435, detection data from the ultrasonic transducer 551, and image data from the high-definition industrial camera 613. The built-in algorithm filters, analyzes, and fuses the data to automatically determine the quality level of the PTFE lining.

[0040] Working principle: such as Figures 1-11 As shown, the device is first moved to the side of the large container to be tested by the universal wheels 8 at the bottom of the slide bar 12 at the bottom of the support component 1, thus completing the initial positioning.

[0041] The height of the equipment is then adjusted by the lifting cylinder 14: the top of the lifting cylinder 14 is fixed to the axis of the support frame 13, and the bottom is fixed to the axis of the bottom of the slide rod 12. After starting, it can drive the support body 11 to slide up and down along the slide rod 12, thereby driving the top positioning component 2, positioning clamping mechanism 4 and other components to rise and fall synchronously until the detection mechanism 5 and the container port are at the same level, meeting the height adaptation requirements of the detection operation. Finally, the casters 8 are locked to ensure the stability of the equipment.

[0042] Lateral Positioning and Precise Alignment Stage: After height adjustment, the detection mechanism and the container are precisely aligned laterally using positioning component 2. The support plate 21 of positioning component 2 is fixed to the top side of support component 1. After the lateral electric cylinder 24 is activated, it can drive the shift seat 23 to slide along the grating ruler 22 on the top side of the support plate 21. The grating ruler 22 provides real-time feedback on the displacement data of the shift seat 23 and transmits it to the PLC controller 7, ensuring that the shift seat 23 drives the top movable plate 3, positioning clamping mechanism 4, and adjustment detection mechanism 5 to move precisely laterally, so that the sealing detection component 55 of the adjustment detection mechanism 5 is aligned with the port of the container to be tested, laying the positioning foundation for subsequent insertion into the container for testing.

[0043] Positioning, clamping and coaxial calibration stage: After the equipment and container are aligned, the positioning and clamping mechanism 4 is activated to achieve stable clamping and coaxial calibration of the container port.

[0044] Upon startup, the L-shaped bracket 41 slides along the outer wall of the main shaft 41 to adjust the spacing, causing the clamping assembly 43 to move closer to the container port. The folding frame 433 of the clamping assembly 43 extends and retracts in conjunction with the ring array of clamping blocks 432, ensuring that the clamping blocks 432 precisely fit against the outer wall of the container port. Simultaneously, the rubber liner 434 inside the clamping blocks 432 prevents damage to the container surface, and the embedded pressure sensor 435 detects the clamping pressure in real time and feeds it back to the PLC controller 7, ensuring that the clamping force is moderate and uniform, preventing damage to the container from excessive tightness or equipment displacement during testing from excessive looseness. The front and rear support blocks 431 further enhance the structural stability of the clamping assembly 43, ultimately achieving coaxial fixation between the equipment and the container, ensuring subsequent testing accuracy.

[0045] Multi-dimensional inspection stage: After positioning and clamping, the adjustment inspection mechanism 5 and the auxiliary mechanism 6 are started in tandem to realize multi-dimensional quality inspection of the PTFE lining of the container, such as ultrasonic inspection and visual inspection. The inspection position can be flexibly adjusted.

[0046] Detection angle adjustment: Start the rotary motor 51 at the right end of the positioning clamping mechanism 4. Its output end drives the rotating shaft 52 to rotate. The rotating shaft 52 then drives the rear push cylinder 53, L-shaped bracket 54 and sealing detection component 55 to rotate synchronously. This can realize the 360° angle adjustment of the sealing detection component 55 inside the container, which can adapt to the detection needs of different circumferential positions on the inner wall of the container.

[0047] Detection depth adjustment: Activate the push cylinder 53, which can push the L-shaped bracket 54 to extend and retract back and forth, thereby driving the sealing detection component 55 to move back and forth along the container axis, realizing flexible adjustment of the detection depth, which can cover the inner lining detection of different length areas of the container body.

[0048] Core Inspection Execution: The ultrasonic transducer 551 of the sealing inspection component 55 contacts the PTFE lining surface of the container via probe 552. Upon activation, it emits an ultrasonic signal, which is reflected by the PTFE lining and received by probe 552. By analyzing parameters such as the amplitude and phase of the reflected signal, the thickness uniformity of the lining and its adhesion to the container substrate can be detected. The inspection data is transmitted to the PLC controller 7 in real time. Simultaneously, the auxiliary mechanism 6 is activated to assist in the inspection: the ring LED supplementary light 612 of the vision inspection component 61 illuminates the inspection area, and the high-definition industrial camera 613 is fixed to the inside of the adjustment inspection mechanism 5 via a connecting bracket 611. It can capture images of the lining surface in real time and identify surface defects such as scratches, pinholes, and bubbles. The spraying assembly 62 can provide assistance according to the testing requirements: before testing, ultrasonic coupling agent (or corrosion resistance testing liquid) is sprayed into the ring array of the testing area through the testing liquid spray head 625 to ensure the accuracy of ultrasonic testing (or to achieve rapid corrosion resistance testing). After testing, the clean water in the water tank 622 is transported to the rinsing head 624 through the water pipe 623. The rinsing head 625 of the ring array rinses the testing area to remove residual media.

[0049] Data processing and operation control stage: Throughout the inspection process, the PLC controller 7, as the core control unit, receives displacement data from the grating ruler 22, clamping pressure data from the pressure sensor 435, detection data from the ultrasonic transducer 551, and image data from the high-definition industrial camera 613. It filters, analyzes, and fuses the data using built-in algorithms to automatically determine the quality grade of the PTFE lining (qualified, unqualified, pending re-inspection). Simultaneously, the PLC controller 7 can automatically adjust the actions of each component based on the inspection data. For example, when a defect is detected in a certain area, it controls the transverse electric cylinder 24, the push electric cylinder 53, or the rotary motor 51 to drive the inspection mechanism to perform a secondary, precise inspection of the defective area. If the pressure sensor 435 reports abnormal pressure, it immediately controls the clamping component 43 to adjust the clamping force to ensure operational safety.

[0050] After the inspection is completed, the PLC controller 7 controls each mechanism to reset sequentially: the push cylinder 53 of the adjustment inspection mechanism 5 retracts, removing the sealed inspection component 55 from the container. The folding frame 433 of the positioning clamping mechanism 4 extends and retracts, causing the clamping block 432 to release the container port. The horizontal cylinder 24 drives the transfer seat 23 to reset. The lifting cylinder 14 drives the support body 11 to descend along the slide bar 12 to the initial height. Finally, the casters 8 are unlocked, and the equipment is moved to the designated storage location using the casters 8, completing the entire inspection process.

Claims

1. A quality testing device for PTFE lining of large containers in the chemical industry, comprising a support assembly (1), characterized in that: A positioning component (2) is provided at the top center of the support component (1). A movable plate (3) is provided at the top center of the positioning component (2). A positioning clamping mechanism (4) is provided on the top inner side of the movable plate (3). The positioning clamping mechanism (4) includes a main shaft (41), an L-shaped bracket (42), and a clamping component (43). The clamping component (43) includes a support block (431), a clamping block (432), a folding frame (433), a rubber liner (434), and a pressure sensor (435). The support block (431) is located at the front and rear ends of the entire clamping component (43). The clamping blocks (432) are arranged in a ring around the clamping component (43). The folding frame (433) penetrates the interior of the clamping block (432) and holds the interior of the clamping block (432). The right end of the positioning clamping mechanism (4) is provided with an adjustment and detection mechanism (5). The adjustment and detection mechanism (5) includes a rotary motor (51), a rotating shaft (52), a push cylinder (53), an L-shaped bracket (54), and a sealing detection assembly (55). The sealing detection assembly (55) includes an ultrasonic transducer (551) and a probe (552). The left end of the L-shaped bracket (54) and the right end of the ultrasonic transducer (551) are fixedly connected. The probe (552) is disposed on the outer wall surface of the ultrasonic transducer (551). The inner ring of the positioning clamping mechanism (4) is provided with an auxiliary mechanism (6), the right end of the auxiliary mechanism (6) and the left end of the adjustment and detection mechanism (5) are axially connected, the front side of the support component (1) is provided with a PLC controller (7), and the bottom end of the support component (1) is provided with a caster wheel (8).

2. The PTFE quality testing equipment for large chemical industry container linings according to claim 1, characterized in that: The support assembly (1) includes a support body (11), a slide bar (12), a support frame (13), and a lifting electric cylinder (14). The bottom end of the positioning assembly (2) is located on the top side of the support body (11), and the universal wheel (8) is located at the bottom end of the slide bar (12).

3. The PTFE quality testing equipment for large chemical industry container linings according to claim 2, characterized in that: The bottom outer side of the support body (11) is slidably connected to the top inner side of the slide rod (12), the support frame (13) is located on the top inner side of the support body (11), the top of the lifting electric cylinder (14) is fixedly connected to the axis of the support frame (13), and the bottom end of the lifting electric cylinder (14) and the bottom axis of the slide rod (12) are fixedly connected.

4. The PTFE quality testing equipment for large chemical industry container linings according to claim 1, characterized in that: The positioning component (2) includes a support plate (21), a grating ruler (22), a shift seat (23), and a transverse electric cylinder (24). The bottom side of the support plate (21) is disposed on the top side of the support component (1), the bottom side of the grating ruler (22) is disposed on the top side of the support plate (21), the bottom of the shift seat (23) is slidably connected to the top side of the support plate (21) and the grating ruler (22), the outer end of the transverse electric cylinder (24) is disposed on the outer end of the top side of the support plate (21), and the inner end of the transverse electric cylinder (24) is connected to the outer end of the shift seat (23).

5. The PTFE quality testing equipment for large chemical industry container linings according to claim 1, characterized in that: The inner end of the L-shaped bracket (42) is slidably inserted into the inner side wall of the main shaft (41), and the outer end of the L-shaped bracket (42) is connected to the side end of the clamping assembly (43).

6. The PTFE quality testing equipment for large chemical industry container linings according to claim 1, characterized in that: The rotary motor (51) is located at the rightmost end of the positioning and clamping mechanism (4), the rotating shaft (52) passes through and is rotatably connected to the shaft of the positioning and clamping mechanism (4), and the inner end of the auxiliary mechanism (6) is fixedly connected to the inner wall of the sealing detection component (55).

7. The PTFE quality testing equipment for large chemical industry container linings according to claim 1, characterized in that: The output end of the rotary motor (51) is connected to one side of the rotating shaft (52), the outer end of the push cylinder (53) is fixedly connected to the rear side of the rotating shaft (52), the rear end of the push cylinder (53) is connected to the right end of the L-shaped bracket (54), and the left end of the L-shaped bracket (54) is fixedly connected to the right end of the sealing detection component (55).

8. The PTFE quality testing equipment for large chemical industry container linings according to claim 1, characterized in that: The auxiliary mechanism (6) includes a visual detection component (61) and a spray component (62), both of which are fixedly connected to the inner left end of the adjustment detection mechanism (5).

9. A quality testing device for PTFE lining of large chemical industrial containers according to claim 8, characterized in that: The visual inspection component (61) includes a connecting frame (611), a ring LED fill light (612), and a high-definition industrial camera (613). The outer end of the connecting frame (611) is fixedly connected to the inner side of the adjustment and inspection mechanism (5). The ring LED fill light (612) is located on the side wall of the connecting frame (611), and the high-definition industrial camera (613) is located on the inner end of the connecting frame (611), thereby realizing the integration of precise spraying of the inspection medium and post-inspection rinsing.

10. A quality testing device for PTFE lining of large chemical industrial containers according to claim 8, characterized in that: The spray assembly (62) includes a support group (621), a water tank (622), a water pipe (623), a flushing head (624), and a detection liquid spraying head (625). The inner end of the support group (621) is fixedly connected to the inner side wall of the adjustment and detection mechanism (5). The water tank (622) is located at the axis of the adjustment and detection mechanism (5). The outer end of the support group (621) passes through the side wall of the water pipe (623). The two sets of water pipes (623) are respectively connected to the side walls of the two sets of water tanks (622) through connecting pipes. The flushing head (624) and the detection liquid spraying head (625) are respectively arranged in a ring array on the side walls of the two sets of ring-shaped water pipes (623).

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