Pipeline lining fluorine layer enhanced combination device based on pipe wall interface pretreatment

Abstract

The invention relates to the technical field of pipeline lining fluorine, in particular to a pipeline lining fluorine layer enhanced combination device based on pipe wall interface pretreatment, which comprises a support frame, a rotary driving frame is bolted to the front end in the support frame, and the top of the rotary driving frame is in rotary contact with a pipeline main body; a pretreatment structure is arranged in the pipeline main body; the pretreatment structure comprises a hollow pipe and an inner pipe, the inner pipe is located in the hollow pipe, the surface of the hollow pipe is sleeved with a flexible sleeve, the front end and the rear end of the flexible sleeve are each provided with a plurality of sealing baffles, and a sealing plate is arranged between every two adjacent sealing baffles; a sand blasting cavity is formed between the front sealing baffle and the flexible sleeve and between the rear sealing baffle and the flexible sleeve. The pipeline lining fluorine layer enhanced combination device based on pipe wall interface pretreatment has the advantages that synchronous cleaning and real-time monitoring are achieved, and the cleanliness and roughness uniformity of a pipe wall interface are guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the field of pipe lining fluorine technology, in particular to a pipe lining fluorine layer reinforced bonding device based on pipe wall interface pretreatment. BACKGROUND

[0002] It is known that pipe lining fluorine materials (such as PTFE, FEP, etc.) are widely used to protect pipes from corrosion by acid, alkali, organic solvents and other media due to their excellent corrosion resistance, thereby prolonging the service life of the pipes.

[0003] In the construction of the pipe lining fluorine layer, the pretreatment quality of the pipe wall interface directly determines the bonding strength of the fluorine layer and the pipe wall. If the roughness of the interface is insufficient, the fluorine layer and the pipe wall will not be tightly bonded, and delamination, bubbling and even peeling off will easily occur during long-term use, which not only loses the corrosion protection function, but also may cause safety accidents due to the fluorine layer peeling off and blocking the pipe.

[0004] In the existing pipe lining fluorine layer construction, the pretreatment technology for the pipe wall interface has the following significant defects: the traditional pretreatment device (such as a fixed sandblasting gun and a manual wiping tool) cannot adapt to the inner surface of pipes with different diameters, especially for the treatment of curved sections and special-shaped pipe fittings, resulting in local oil stains and oxide layer residues. At the same time, sand particles and debris generated during the pretreatment process easily accumulate in low-lying areas of the pipe wall, which cannot be completely removed, affecting the direct contact between the fluorine layer and the pipe wall. In addition, the angle and pressure of the existing sandblasting device are fixedly set, and the sandblasting intensity cannot be dynamically adjusted according to the pipe material (such as carbon steel and stainless steel), resulting in uneven roughness of the pipe wall surface, some areas being too rough (easy to leave impurities), and some areas being too smooth (difficult to form mechanical anchoring), which ultimately causes fluctuations in the bonding force of the fluorine layer and the risk of local peeling off. SUMMARY

[0005] (I) Technical problems solved In view of the deficiencies of the prior art, the application provides a pipe lining fluorine layer reinforced bonding device based on pipe wall interface pretreatment, which has the advantages of synchronous cleaning and real-time monitoring to ensure the uniformity of the cleanliness and roughness of the pipe wall interface.

[0006] (II) Technical solutions The above technical purposes of the application are achieved by the following technical solutions: a pipe lining fluorine layer reinforced bonding device based on pipe wall interface pretreatment, comprising a support frame, a rotating drive frame is connected to the front end inside the support frame, and a pipe body is rotatably connected to the top of the rotating drive frame, and a pretreatment structure is arranged in the pipe body. The pre-treatment structure comprises a hollow pipe and an inner pipe, the inner pipe is inside the hollow pipe, the surface of the hollow pipe is sleeved with a flexible sleeve, the front end and the rear end of the flexible sleeve are provided with a plurality of sealing baffles, a sealing plate is arranged between adjacent two sealing baffles, the sand blasting cavity is formed between the front and rear two sealing baffles and the flexible sleeve, a nozzle is penetrated through the left side of the inside of the flexible sleeve, the right side of the nozzle is penetrated through the hollow pipe and is communicated with the inner pipe, a guide baffle is arranged above the nozzle, a negative pressure adsorption assembly is arranged on the top of the flexible sleeve, and a detection assembly is bolted on the right side of the negative pressure adsorption assembly.

[0007] By adopting the technical scheme, the pipeline body is placed on the two rotary driving frames, the rotary driving frames can drive the pipeline to rotate, the hollow pipe extends into the inside of the pipeline body, the flexible sleeve is attached to the pipe wall, the sealing baffles and the sealing plates form a closed sand blasting cavity, the sand is conveyed to the nozzle by the inner pipe, is guided by the guide baffle and is uniformly sprayed to the pipe wall, the residual sand particles are removed by the negative pressure adsorption assembly during the sand blasting process, the detection assembly synchronously monitors the pre-treatment quality of the pipe wall, the closed pre-treatment space is formed by the flexible sleeve and the sealing structure, the problems of dust leakage and processing dead angle of the traditional device are solved, the rotary driving and the moving adjustment are combined to realize the uniform treatment of the whole inner wall of the pipeline, the functions of sand blasting, adsorption and detection are integrated, the secondary pollution caused by the disconnection of processes is avoided, a clean and uniform interface is provided for the fluorine layer combination.

[0008] The application further provides that: the negative pressure adsorption assembly comprises an upper adsorption shell, the upper adsorption shell is on the top of the flexible sleeve, the bottom of the upper adsorption shell is communicated with a flexible pipe, the other end of the flexible pipe is communicated with the hollow pipe, the surface of the flexible pipe is sleeved with an elastic sleeve, and the two ends of the elastic sleeve are connected with the upper adsorption shell and the hollow pipe respectively, the front side and the rear side of the inside of the elastic sleeve are rotatably connected with two contact rollers respectively, the side, away from the inner wall of the upper adsorption shell, of the contact roller is bolted with a driving gear, the bottom of the driving gear is meshingly connected with a driven gear, the inside of the driven gear is penetrated through with a connecting shaft, the opposite sides of the two connecting shafts are bolted with a sweeping roller, the right side of the inside of the upper adsorption shell is provided with a knocking piece, and the knocking piece is used in cooperation with the connecting shaft.

[0009] By adopting the technical scheme, when sand blasting, the upper adsorption shell is communicated with the hollow pipe through the flexible pipe to form negative pressure adsorption of residual sand particles and debris, the elastic sleeve is attached to the pipe wall along with the flexible sleeve, and is in contact with the pipe wall through the contact roller and rotates along with the pipeline body, drives the driving gear to rotate, the meshing driven gear drives the connecting shaft to rotate, and the sweeping roller rotates to clean the residual impurities on the pipe wall, when the connecting shaft rotates, the knocking piece cooperates with the connecting shaft to further shake off stubborn debris, improves the cleaning effect, cooperates the negative pressure adsorption with the mechanical cleaning to solve the problem of sand particle accumulation of the traditional device, the sweeping roller cooperates with the knocking piece to enhance the thoroughness of cleaning, and avoid the influence of impurities on the fluorine layer combination.

[0010] The present application further provides that the knocking part comprises a support plate, the support plate is bolted to the right side inside the upper adsorption shell, the top of the support plate is provided with a movable plate, and the top of the movable plate is bolted with a plurality of knocking rods, a plurality of springs are arranged between the opposite sides of the movable plate and the support plate, and the two ends of the support plate are provided with a push block integrated with the support plate, the top of the push block is in contact with a push plate, and the other end of the push plate is fixedly sleeved on the surface of the connecting shaft.

[0011] The above technical scheme is adopted, the push plate rotates with the connecting shaft when the connecting shaft rotates and contacts the push block, the push block drives the support plate to extrude the spring, the movable plate is lowered, the push plate is separated from the push block, the spring is reset to drive the movable plate to rise, the knocking rod hits the pipe wall to generate vibration, the residual sand particles in the adsorption shell are shaken off, and blockage is avoided, the residual inside the adsorption assembly is automatically cleaned through the combination of mechanical knocking and spring resetting, and the adsorption efficiency is maintained.

[0012] The present application further provides that the right end of the push plate is provided in a smooth curved surface, and the push block is provided in a semicircular shape as a whole.

[0013] The above technical scheme is adopted, the smooth curved surface of the push plate and the semicircular design reduce mechanical wear, prolong the service life of the assembly, the contact pressure is uniform to avoid local stress concentration, the action of the knocking part is stable, and the self-cleaning reliability of the adsorption assembly is improved.

[0014] The present application further provides that the detection assembly comprises two fixed plates, the fixed plates are bolted to the right side of the upper adsorption shell, a plurality of probes are slidably connected inside the top fixed plate, the bottom of the probe is bolted with two connecting frames, the connecting frame is rotatably connected with a connecting plate inside, a rotating shaft penetrates the bottom inside the connecting plate, and the rear side of the rotating shaft is bolted with an encoder.

[0015] The above technical scheme is adopted, the probe is in contact with the pipe wall during pretreatment, the probe is displaced up and down with the pipe wall roughness when the pipe body rotates, the probe and the fixed plate are connected with an elastic reset structure, the probe can drive the movable plate to swing through the connecting plate, the rotating shaft rotates with the movable plate and drives the encoder to work, the encoder converts mechanical movement into electrical signals, the surface roughness data of the pipe wall is fed back in real time, online detection is used to replace traditional offline sampling, the pretreatment quality can be monitored in real time, roughness uneven areas can be found in time and sandblasting parameters can be adjusted, and accurate measurement is realized through the cooperation of the probe and the encoder.

[0016] The present application further provides that the bottom of the flexible sleeve is provided with a lower adsorption shell, the top of the lower adsorption shell is communicated with a connecting pipe, and the lower adsorption shell is communicated with the hollow pipe through the connecting pipe.

[0017] The technical scheme is adopted, the lower adsorption shell is communicated with the hollow pipe through the connecting pipe to form a bottom negative pressure when sand blasting, and the sand and debris at the bottom of the pipeline are adsorbed, the upper and lower adsorption shells are cooperated to remove the residual impurities from the top and bottom, and the bottom accumulation caused by gravity is avoided.

[0018] The flexible sleeve is internally provided with a plurality of expansion plates in a ring shape, the surface of the hollow pipe is bolted with an electric cylinder in a ring shape, and the side of the electric cylinder close to the expansion plate is bolted with the expansion plate.

[0019] The technical scheme is adopted, the expansion plate is driven to move radially by the electric cylinder according to the pipe diameter, the flexible sleeve is expanded or contracted, the flexible sleeve is tightly attached to the pipe wall, the sealing performance of the sand blasting cavity is ensured, the expansion plates are uniformly distributed, the stress balance of the flexible sleeve is ensured, the local deformation affecting the sealing effect is avoided, the self-adaptive pipe diameter adjustment of the flexible sleeve is realized by the expansion plate driven by the electric cylinder, a plurality of pipe diameters can be adapted without replacing the components, and the universality of the device is improved.

[0020] The top of the support frame is slidably connected with a moving seat, the top of the moving seat is bolted with a fixed seat, the top of the fixed seat is provided with a lifting seat, and the lifting seat is bolted with the hollow pipe.

[0021] The technical scheme is adopted, the three-dimensional adjustment of the pretreatment structure is realized by the cooperation of the moving seat and the lifting seat, the pipelines with different lengths and installation heights are adapted, the distance between the nozzle and the pipe wall is ensured to be consistent, the uneven sand blasting strength is avoided, and the uniformity of roughness is improved.

[0022] The two sides of the fixed seat are rotatably connected with two lifting lead screws, the surfaces of the lifting lead screws are threadedly connected with lifting nuts, the top of each lifting nut is bolted with a lifting plate, and the top of each lifting plate is bolted with the lifting seat.

[0023] The technical scheme is adopted, the lifting lead screws are driven to rotate by the external driving equipment (such as a motor), the lifting nuts are driven to lift, the lifting plates and the lifting seat are adjusted in height, the lifting lead screws on the two sides are synchronously rotated, the lifting seat is ensured to be horizontally lifted, and the inclination of the pretreatment structure is avoided to cause the deviation of the sand blasting angle.

[0024] The two sides of the support frame are rotatably connected with displacement lead screws, the surfaces of the displacement lead screws are threadedly connected with supports, the side close to the moving seat of each support is bolted with the moving seat, the rear ends of the displacement lead screws are sleeved with synchronous wheels, and a synchronous belt is wound between the interiors of the two synchronous wheels.

[0025] By adopting the technical scheme, one displacement screw rod is driven to rotate by the externally-attached displacement motor, the other displacement screw rod is synchronously driven to rotate by the synchronous wheel and the synchronous belt, the support moves along with the displacement screw rod to drive the moving seat to stably slide along the support frame, and the pretreatment structure is uniformly moved along the axial direction of the pipeline.

[0026] (Three) beneficial effects Compared with the prior art, the application provides a pipeline lining fluorine layer reinforcing and combining device based on pipe wall interface pretreatment, which has the following beneficial effects: The pipeline lining fluorine layer reinforcing and combining device based on pipe wall interface pretreatment is provided with a pretreatment structure, which is matched with the expansion plate through the flexible sleeve, can adapt to the inner wall pretreatment of pipelines with different diameters, avoids the dead angle problem of traditional fixed devices, forms a closed sandblasting cavity with the sealing baffle and the sealing plate, prevents dust leakage, ensures that the sandblasting energy is concentrated on the pipe wall, and improves the pretreatment efficiency; the sand material sprayed by the nozzle is uniformly distributed through the guide baffle, and the residual sand particles and debris are removed in real time through the negative pressure adsorption, so that accumulation is avoided, and the roughness can be monitored in real time through the detection assembly, the rotation drive and the movement adjustment are matched, the roughness of the pipe wall surface is ensured to be consistent, a stable interface is provided for fluorine layer combination. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic view of the overall structure in the application; Figure 2 It is a connection schematic view of the pipeline main body and the pretreatment structure in the application; Figure 3 It is a schematic view of the pretreatment structure in the application; Figure 4 It is a schematic view of the negative pressure adsorption assembly structure in the application; Figure 5 It is a schematic view of the knocking piece structure in the application; Figure 6 It is a schematic view of the detection assembly structure in the application.

[0028] In the figure: 1, support frame; 2, rotating drive frame; 3, pipeline main body; 4, pretreatment structure; 41, hollow pipe; 42, inner pipe; 43, flexible sleeve; 44, sealing baffle; 45, sealing plate; 46, nozzle; 47, guide baffle; 48, negative pressure adsorption assembly; 481, upper adsorption shell; 482, flexible pipe; 483, elastic sleeve; 484, contact roller; 485, drive gear; 486, driven gear; 487, connecting shaft; 488, brush roller; 489, knocking piece; 489a, support plate; 489b, movable plate; 489c, knocking rod; 489d, spring; 489e, pushing block; 489f, pushing plate; 49, detection assembly; 491, fixed plate; 492, probe; 493, connecting frame; 494, connecting plate; 495, rotating shaft; 496, encoder; 5, lower adsorption shell; 6, expansion plate; 7, electric cylinder; 8, moving seat; 9, fixed seat; 10, lifting seat; 11, lifting lead screw; 12, lifting nut; 13, lifting plate; 14, displacement lead screw; 15, support; 16, synchronous wheel; 17, synchronous belt. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Please refer to Figures 1-6 A pipeline lining fluorine layer reinforcing and bonding device based on pipe wall interface pretreatment, comprising a support frame 1, a rotating drive frame 2 is connected at the front end inside the support frame 1, and a pipeline main body 3 is rotatably connected to the top of the rotating drive frame 2, and the pipeline main body 3 is internally provided with a pretreatment structure 4. The pretreatment structure 4 comprises a hollow pipe 41 and an inner pipe 42, the inner pipe 42 is inside the hollow pipe 41, the surface of the hollow pipe 41 is sleeved with a flexible sleeve 43, the front end and the rear end of the flexible sleeve 43 are provided with a plurality of sealing baffles 44, the sealing baffles 44 between adjacent two sealing baffles 44 are provided with a sealing plate 45, the front and rear two sealing baffles 44 and the flexible sleeve 43 form a sand blasting cavity, the left side of the inside of the flexible sleeve 43 is penetrated through a nozzle 46, the right side of the nozzle 46 is penetrated through the hollow pipe 41 and communicates with the inner pipe 42, the upper side of the nozzle 46 is provided with a guide baffle 47, the top of the flexible sleeve 43 is provided with a negative pressure adsorption assembly 48, and the right side of the negative pressure adsorption assembly 48 is hinged with a detection assembly 49, by arranging the pretreatment structure 4, the pipeline body 3 is placed on the two rotary driving frames 2, the rotary driving frame 2 can drive the pipeline to rotate, and the hollow pipe 41 extends into the inside of the pipeline body 3, the flexible sleeve 43 is attached to the pipe wall, the sealing baffles 44 and the sealing plate 45 form a closed sand blasting cavity, the sand is conveyed to the nozzle 46 by the inner pipe 42, is guided to be uniformly sprayed to the pipe wall through the guide baffle 47, in the sand blasting process, the negative pressure adsorption assembly 48 removes the residual sand, the detection assembly 49 synchronously monitors the pretreatment quality of the pipe wall, the closed pretreatment space is formed through the flexible sleeve 43 and the sealing structure, the problems of dust leakage and processing dead angle of the traditional device are solved, the rotary driving and the moving adjustment are combined, the uniform treatment of the whole inner wall of the pipeline is realized, the sand blasting, adsorption and detection functions are integrated, the secondary pollution caused by the disconnection of the process is avoided, a clean and uniform interface is provided for the fluorine layer combination.

[0031] The negative pressure adsorption assembly 48 comprises an upper adsorption shell 481 located at the top of the flexible sleeve 43, and the bottom of the upper adsorption shell 481 is communicated with a flexible pipe 482, the other end of the flexible pipe 482 is communicated with the hollow pipe 41, the surface of the flexible pipe 482 is sleeved with an elastic sleeve 483, and the two ends of the elastic sleeve 483 are connected with the upper adsorption shell 481 and the hollow pipe 41 respectively, the front side and the rear side in the elastic sleeve 483 are both rotationally connected with two contact rollers 484, the side away from the inner wall of the upper adsorption shell 481 of the contact roller 484 is bolted with a drive gear 485, and the bottom of the drive gear 485 is meshedly connected with a driven gear 486, the inside of the driven gear 486 penetrates a connecting shaft 487, and the opposite sides of the two connecting shafts 487 are bolted with a brush roller 488, the right side in the upper adsorption shell 481 is provided with a knocking piece 489, and the knocking piece 489 is used in cooperation with the connecting shaft 487, and the upper adsorption shell 481 is communicated with the hollow pipe 41 through the flexible pipe 482 to form negative pressure adsorption of residual sand and debris when sand blasting, the elastic sleeve 483 adheres to the pipe wall with the flexible sleeve 43, and is in contact with the pipe wall through the contact roller 484 and rotates with the pipeline body 3, drives the drive gear 485 to rotate, the meshed driven gear 486 drives the connecting shaft 487 to rotate, and the brush roller 488 rotates to clean the residual impurities on the pipe wall, and when the connecting shaft 487 rotates, the knocking piece 489 cooperates with the connecting shaft 487 to further shake off stubborn debris, improve the cleaning effect, coordinate negative pressure adsorption and mechanical cleaning, solve the problem of sand accumulation of the traditional device, the brush roller 488 cooperates with the knocking piece 489 to enhance the thoroughness of cleaning, and avoid the influence of impurities on the fluorine layer combination.

[0032] The knocking piece 489 comprises a support plate 489a bolted to the right side in the upper adsorption shell 481, the top of the support plate 489a is provided with a movable plate 489b, a plurality of knocking rods 489c are bolted to the top of the movable plate 489b, a plurality of springs 489d are arranged between the opposite sides of the movable plate 489b and the support plate 489a, the two ends of the support plate 489a are both provided with a push block 489e integrated therewith, the top of the push block 489e is in contact with a push plate 489f, and the other end of the push plate 489f is fixedly sleeved on the surface of the connecting shaft 487, by arranging the knocking piece 489, when the connecting shaft 487 rotates, the push plate 489f rotates with it and contacts the push block 489e, the push block 489e drives the support plate 489a to extrude the spring 489d, so that the movable plate 489b descends, when the push plate 489f is separated from the push block 489e, the spring 489d resets to drive the movable plate 489b to rise, the knocking rod 489c hits the pipe wall to produce vibration, shakes off the residual sand in the adsorption shell, avoids blockage, and automatically cleans the residual inside the adsorption assembly through the combination of mechanical knocking and spring 489d resetting, maintains the adsorption efficiency.

[0033] The right end of the push plate 489f is provided in a smooth curved surface, and the push block 489e is provided in a semicircle as a whole. The smooth curved surface of the push plate 489f and the semicircle design reduce mechanical wear, prolong the service life of the assembly, uniformly distribute the contact pressure, avoid local stress concentration, ensure the stable operation of the knocking part 489, and improve the self-cleaning reliability of the adsorption assembly.

[0034] The detection assembly 49 includes two fixed plates 491, which are bolted to the right side of the upper adsorption shell 481. The inside of the top fixed plate 491 is slidably connected with a plurality of probes 492. The bottom of the probe 492 is bolted with two connecting frames 493. The connecting frame 493 is rotatably connected with a connecting plate 494. The inside of the connecting plate 494 is penetrated by a rotating shaft 495 at the bottom. The rear side of the rotating shaft 495 is bolted with an encoder 496. When the pipeline body 3 rotates, the probe 492 is displaced up and down with the roughness of the pipe wall. The probe 492 is connected with the fixed plate 491, and an elastic reset structure is arranged at the connection position of the probe 492 and the fixed plate 491. The elastic reset structure can drive the movable plate 489b to swing through the connecting plate 494. The rotating shaft 495 rotates with the movable plate 489b and drives the encoder 496 to work. The encoder 496 converts mechanical movement into electrical signal and feeds back the roughness data of the pipe wall surface in real time. The online detection replaces the traditional offline sampling, which can monitor the pretreatment quality in real time, find the roughness uneven area in time and adjust the sand blasting parameters. Through the cooperation of the probe 492 and the encoder 496, accurate measurement is realized.

[0035] The bottom of the flexible sleeve 43 is provided with a lower adsorption shell 5, and the top of the lower adsorption shell 5 is communicated with a connecting pipe. The lower adsorption shell 5 is communicated with the hollow pipe 41 through the connecting pipe. When sand blasting, the lower adsorption shell 5 is communicated with the hollow pipe 41 through the connecting pipe to form a bottom negative pressure to adsorb the sand and debris at the bottom of the pipeline. Through the cooperation of the upper adsorption shell 481 and the lower adsorption shell 5, the residual impurities can be removed from the top and bottom, avoiding the accumulation of the bottom caused by gravity.

[0036] The inside of the flexible sleeve 43 is annularly provided with a plurality of expansion plates 6. The surface of the hollow pipe 41 is annularly bolted with an electric cylinder 7, and the side close to the expansion plate 6 is bolted with the electric cylinder 7. According to the pipe diameter, the electric cylinder 7 drives the expansion plate 6 to move radially, drives the flexible sleeve 43 to expand or contract, and makes the flexible sleeve 43 closely fit the pipe wall, so as to ensure the sealing performance of the sand blasting cavity. The expansion plates 6 are evenly distributed, so that the flexible sleeve 43 is balanced in stress, avoiding local deformation affecting the sealing effect. The expansion plate 6 driven by the electric cylinder 7 realizes the self-adaptive pipe diameter adjustment of the flexible sleeve 43, without the need to replace the assembly to adapt to various pipe diameters, improving the versatility of the device. The evenly distributed expansion plates 6 ensure uniform sealing, avoid sand blasting energy leakage, and improve the pretreatment efficiency.

[0037] The top of the support frame 1 is in sliding contact with the moving seat 8, the top of the moving seat 8 is bolted with the fixed seat 9, the top of the fixed seat 9 is provided with the lifting seat 10, the lifting seat 10 is bolted with the hollow pipe 41, the three-dimensional adjustment of the pretreatment structure 4 is realized by the cooperation of the moving seat 8 and the lifting seat 10, the pipelines with different lengths and installation heights can be adapted, it can be ensured that the distance between the nozzle 46 and the pipe wall is consistent, the sandblasting strength is avoided to be uneven, and the roughness uniformity is improved.

[0038] The two sides of the fixed seat 9 are rotatably connected with two lifting lead screws 11, the surfaces of the lifting lead screws 11 are screw-connected with lifting nuts 12, the top of the lifting nut 12 is bolted with two lifting plates 13, the top of the lifting plate 13 is bolted with the lifting seat 10, the lifting lead screw 11 is driven to rotate by the external driving equipment (such as a motor) and drives the lifting nut 12 to lift, the lifting plate 13 drives the lifting seat 10 to adjust the height, the two sides of the lifting lead screw 11 are synchronously rotated, the lifting seat 10 is ensured to be horizontally lifted, and the sandblasting angle deviation caused by the inclination of the pretreatment structure 4 is avoided.

[0039] The two sides of the support frame 1 are rotatably connected with displacement lead screws 14, the surfaces of the displacement lead screws 14 are screw-connected with supports 15, one side of the support 15 close to the moving seat 8 is bolted with the moving seat 8, the rear end of the displacement lead screw 14 is sleeved with a synchronous wheel 16, and the inside of the two synchronous wheels 16 is wound with a synchronous belt 17, one of the displacement lead screws 14 is driven to rotate by the external displacement motor, the other displacement lead screw 14 is driven to synchronously rotate by the synchronous wheel 16 and the synchronous belt 17, the support 15 moves with the displacement lead screw 14 to drive the moving seat 8 to stably slide along the support frame 1, and the uniform speed movement of the pretreatment structure 4 along the pipeline axis is realized.

[0040] The working principle of the embodiment is as follows: the pipeline body 3 to be processed is hoisted to the rotating drive frame 2 of the support frame 1, the support wheel of the rotating drive frame 2 is used to realize the axial positioning of the pipeline body 3, it is ensured that the pipeline body 3 can stably rotate with the rotating drive frame 2, then the displacement driving system is started, the displacement screw rod 14 is driven by the synchronous wheel 16 and the synchronous belt 17 to drive the moving seat 8 to slide along the support frame 1, the hollow pipe 41 and the inner pipe 42 are aligned with the port of the pipeline body 3, at the same time, the external driving device drives the lifting screw rod 11 to rotate and drives the lifting sleeve 12 and the lifting plate 13 to lift, the height of the lifting seat 10 is adjusted to ensure that the hollow pipe 41 is concentric with the axis of the pipeline body 3; then according to the pipe diameter of the pipeline body 3, the electric cylinder 7 is extended and retracted to drive the radially distributed expansion plate 6 to move, the flexible sleeve 43 is synchronously expanded or contracted, until the sealing baffle 44 and the sealing plate 45 made of flexible material are tightly attached to the inner surface of the pipe wall, at this time, the sealing baffle 44 and the sealing plate 45 cooperate to form a closed sand blasting cavity, avoiding the leakage of sand and dust during sand blasting; then the sand blasting operation is carried out, the external sand blasting equipment delivers the sand (according to the pipe material to select the appropriate type) to the nozzle 46 through the inner pipe 42, the sand is uniformly sprayed to the pipe wall surface after being divided by the guide baffle 47, at the same time, the rotating drive frame 2 drives the pipeline body 3 to rotate slowly, the moving seat 8 moves at a constant speed along the axial direction of the pipeline body 3, so that the sand blasting area spirally advances along the pipe wall, ensuring that the entire inner surface of the pipe is uniformly sand blasted to form the required roughness; during the sand blasting process, the upper adsorption shell 481 and the lower adsorption shell 5 are communicated with the hollow pipe 41 through the flexible pipe 482, the connecting pipe and the hollow pipe 41, the external negative pressure equipment extracts the air in the hollow pipe 41 to form a negative pressure environment, and synchronously adsorbs the sand and debris generated by sand blasting, the contact roller 484 rotates with the pipeline body 3, drives the driving gear 485 and the driven gear 486 to mesh and drive, the connecting shaft 487 drives the brush roller 488 to rotate, and the residual sand on the pipe wall is cleaned, when the connecting shaft 487 rotates, the push plate 489f periodically extrudes the push block 489e, so that the movable plate 489b compresses the spring 489d and then resets, the knocking rod 489c hits the pipe wall to generate vibration, shakes off the adhered sand particles on the pipe wall, and avoids blockage; at the same time of sand blasting, the probe 492 of the detection assembly 49 contacts the pipe wall surface, is affected by the roughness of the pipe wall, and is displaced up and down with the roughness of the pipe wall, and an elastic reset structure is arranged at the connection position of the probe 492 and the fixed plate 491, so that the probe 492 drives the movable plate 489b to swing through the connecting plate 494, the rotating shaft 495 rotates with the movable plate 489b and drives the encoder 496 to work, the encoder 496 converts mechanical movement into electrical signal and transmits it to the control system in real time, if the encoder 496 feedbacks that the local roughness is insufficient, the control system adjusts the sand blasting pressure to ensure that the sand blasting intensity of the region is enhanced, if it is found that the local roughness is too rough, the sand blasting pressure is reduced or the moving speed is increased for adjustment, until the roughness of the whole pipe is uniform.After the pretreatment is completed, the electric cylinder 7 is retracted to make the flexible sleeve 43 disengage from the pipe wall, the lifting seat 10 is lowered, the moving seat 8 is retracted, the pretreatment structure 4 is moved out of the pipe body 3, the rotary drive is stopped, and the pipe body 3 can be hoisted to the next process (such as fluorine layer coating).

[0041] The embodiments are only illustrative of the present application, and are not intended to limit the present application. Those skilled in the art can make modifications to the embodiments according to the needs after reading the present specification, and the modifications do not contribute to the creativity. Although the embodiments of the present application have been shown and described, it is understood to those skilled in the art that various changes, modifications, replacements, and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for enhancing the bonding of a fluorine lining in a pipe based on the pre-treatment of the pipe wall interface, comprising a support frame (1), characterized in that: The front end of the support frame (1) is provided with a rotary drive frame (2), and the top of the rotary drive frame (2) is rotatably connected with a pipeline body (3), and the inside of the pipeline body (3) is provided with a pretreatment structure (4); The pretreatment structure (4) comprises a hollow pipe (41) and an inner pipe (42), and the inner pipe (42) is located in the hollow pipe (41), the surface of the hollow pipe (41) is sleeved with a flexible sleeve (43), and the front end and the rear end of the flexible sleeve (43) are provided with a plurality of sealing baffles (44), the sealing baffles (44) are provided with a sealing plate (45) between adjacent two sealing baffles (44), the front and rear two sealing baffles (44) and the flexible sleeve (43) form a sand blasting cavity, a nozzle (46) penetrates through the left side of the inside of the flexible sleeve (43), and the right side of the nozzle (46) penetrates through the hollow pipe (41) and communicates with the inner pipe (42), a guide baffle (47) is arranged above the nozzle (46), and a negative pressure adsorption assembly (48) is arranged on the top of the flexible sleeve (43), and the right side of the negative pressure adsorption assembly (48) is connected with a detection assembly (49).

2. A pipe lining fluorine layer enhanced bonding device based on pipe wall interface pretreatment according to claim 1, characterized in that: The negative pressure adsorption assembly (48) comprises an upper adsorption shell (481), the upper adsorption shell (481) is located on the top of the flexible sleeve (43), and the bottom of the upper adsorption shell (481) is communicated with a flexible pipe (482), the other end of the flexible pipe (482) is communicated with the hollow pipe (41), the surface of the flexible pipe (482) is sleeved with an elastic sleeve (483), and the two ends of the elastic sleeve (483) are connected with the upper adsorption shell (481) and the hollow pipe (41) respectively, two contact rollers (484) are rotatably connected on the front side and the rear side of the inside of the elastic sleeve (483), a drive gear (485) is connected with the side of the contact roller (484) away from the inner wall of the upper adsorption shell (481), a driven gear (486) is connected with the bottom of the drive gear (485), a connecting shaft (487) penetrates through the inside of the driven gear (486), and a sweeping roller (488) is connected between the opposite sides of the two connecting shafts (487), a knocking piece (489) is arranged on the right side of the inside of the upper adsorption shell (481), and the knocking piece (489) is used in cooperation with the connecting shaft (487).

3. A pipe lining fluorine layer enhanced bonding device based on pipe wall interface pretreatment according to claim 2, characterized in that: The knocking piece (489) comprises a support plate (489a), the support plate (489a) is connected with the right side of the inside of the upper adsorption shell (481), an activity plate (489b) is arranged on the top of the support plate (489a), a plurality of knocking rods (489c) are connected with the top of the activity plate (489b), a plurality of springs (489d) are arranged between the opposite sides of the activity plate (489b) and the support plate (489a), a pushing block (489e) is arranged on the two ends of the support plate (489a) and is integrated with the support plate (489a), a pushing plate (489f) is connected with the top of the pushing block (489e), and the other end of the pushing plate (489f) is fixedly sleeved on the surface of the connecting shaft (487).

4. A pipe lining fluorine layer enhanced bonding device based on pipe wall interface pretreatment according to claim 3, characterized in that: The right end of the push plate (489f) is provided with a smooth curved surface, and the push block (489e) is provided in a semicircular shape as a whole.

5. A pipe lining fluorine layer enhanced bonding device based on pipe wall interface pretreatment according to claim 2, characterized in that: The detection assembly (49) comprises two fixed plates (491) which are bolted to the right side of the upper suction shell (481), the inside of the top fixed plate (491) is slidably connected with a plurality of probes (492), the bottom of the probe (492) is bolted with two connecting frames (493), the inside of the connecting frame (493) is rotatably connected with a connecting plate (494), the inside of the bottom of the connecting plate (494) penetrates a rotating shaft (495), the rear side of the rotating shaft (495) is bolted with an encoder (496).

6. A pipe lining fluorine layer enhanced bonding device based on pipe wall interface pretreatment according to claim 1, characterized in that: The bottom of the flexible sleeve (43) is provided with a lower suction shell (5), and the top of the lower suction shell (5) is communicated with a connecting pipe, and the lower suction shell (5) is communicated with the hollow pipe (41) through the connecting pipe.

7. A pipe lining fluorine layer enhanced bonding device based on pipe wall interface pretreatment according to claim 1, characterized in that: The inside of the flexible sleeve (43) is annularly provided with a plurality of expansion plates (6), the surface of the hollow pipe (41) is annularly bolted with an electric cylinder (7), and the side close to the expansion plate (6) is bolted with the electric cylinder (7).

8. A pipe lining fluorine layer enhanced bonding device based on pipe wall interface pretreatment according to claim 1, characterized in that: The top of the support frame (1) is slidably contacted with a moving seat (8), and the top of the moving seat (8) is bolted with a fixed seat (9), the top of the fixed seat (9) is provided with a lifting seat (10), and the lifting seat (10) is bolted with the hollow pipe (41).

9. A pipe lining fluorine layer enhanced bonding device based on pipe wall interface pretreatment according to claim 8, characterized in that: The two sides of the fixed seat (9) are rotatably connected with two lifting lead screws (11), and the surface of the lifting lead screw (11) is threadedly connected with a lifting nut (12), the top of the lifting nut (12) is bolted with two lifting plates (13), and the top of the lifting plate (13) is bolted with the lifting seat (10).

10. A pipe lining fluorine layer enhanced bonding device based on pipe wall interface pretreatment according to claim 8, characterized in that: The two sides of the support frame (1) are rotatably connected with a displacement lead screw (14), and the surface of the displacement lead screw (14) is threadedly connected with a bracket (15), the side close to the moving seat (8) of the bracket (15) is bolted with the moving seat (8), the rear end of the displacement lead screw (14) is sleeved with a synchronous wheel (16), and the inside of the two synchronous wheels (16) is wound with a synchronous belt (17).

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