A seamless welding process and equipment for PPH winding storage tank

Abstract

The present application relates to a seamless welding process and seamless welding equipment for a PPH winding storage tank, and relates to the technical field of winding storage tank production equipment, which includes a frame and a mold barrel rotatably arranged on the frame, and an extrusion head and a heating element are also provided on the frame, and the extrusion head is arranged toward the outer surface of the mold barrel, and the frame is also provided with a leveling component for leveling the winding overlapped part and a trimming component for trimming the surface of the winding tank after leveling. The present application has the effect of improving the uniformity of the overall strength of the winding storage tank and improving the aesthetic appearance of the winding storage tank.

Description

Technical Field

[0001] The present application relates to the technical field of winding storage tank production equipment, and in particular to a seamless welding process and seamless welding equipment for PPH winding storage tanks. Background Art

[0002] At present, the wound storage tank is a pressure vessel made by softening plastic materials such as PPH and PP and winding them on a cylindrical mold, and then demolding them after cooling. Compared with traditional stainless steel storage tanks, the wound storage tank has the advantages of light weight and low cost. Therefore, the wound storage tank has a good prospect for use in industrial production.

[0003] Common winding tank welding equipment includes a frame, a mold barrel rotatably arranged on the frame, an extrusion head slidably arranged on the frame, a heating head arranged on the frame and a clamping roller arranged on the frame. The heating head heats the mold barrel, and the extrusion head is arranged toward the mold barrel, and a feeding hopper is provided on the extrusion head. The sliding direction of the extrusion head is consistent with the axial direction of the mold barrel.

[0004] When forming a wrapped storage tank, the heating head first heats the mold barrel, and then the technician adds PPH and PP plastics into the feeding hopper for melting, and then extrude them onto the mold barrel through the extrusion head. The plastic extruded by the extrusion head is in the shape of a strip. At this time, the mold barrel rotates under the action of an external power source, so that the plastic strip extruded by the extrusion head is wound around the outer surface of the mold barrel, and at the same time, the pressing roller presses the plastic on the outer surface of the mold barrel, so that the plastic strip is stably wound around the outer surface of the mold barrel. At the same time, during the winding process, the extrusion head and the pressing roller slide along the axial direction of the mold barrel.

[0005] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: since the formation process of the wrapped storage tank is that the melted plastic tape is wound around the mold barrel in circles, overlapping parts will be formed on the two adjacent circles of plastic tape. Since the thickness of the overlapping parts and the non-overlapping parts is uneven, a corrugated protrusion will be formed on the outer wall of the storage tank. Since the thickness of the overlapping parts and the non-overlapping parts is uneven, the strength will be uneven. After long-term use of the storage tank, the thinner parts will age faster than the thicker parts, which will easily lead to low local strength of the storage tank, local perforation or cracking, affecting the service life of the entire storage tank; if there is no overlapping part between the two adjacent circles of plastic tape during winding and only splicing is performed, it is necessary to accurately control the sliding stroke of the extrusion head and the rotation speed of the mold barrel, and gaps are likely to appear between the two adjacent circles of plastic bags, affecting the normal use of the entire storage tank. Summary of the invention

[0006] In order to improve the uniformity of the overall strength of the wound storage tank and at the same time improve the aesthetics of the appearance of the wound storage tank, the present application provides a seamless welding process and seamless welding equipment for a PPH wound storage tank.

[0007] The present application provides a PPH winding storage tank seamless welding process and seamless welding equipment adopting the following technical solutions:

[0008] A seamless welding process and seamless welding equipment for a PPH winding storage tank, comprising a frame and a mold barrel rotatably arranged on the frame, the frame is also provided with an extrusion head and a heating element, the extrusion head is arranged toward the outer surface of the mold barrel, the frame is also provided with a leveling component for leveling the overlapping parts of winding and a trimming component for trimming the surface of the winding tank after leveling; the leveling component comprises a leveling frame slidably arranged on the frame and a leveling roller and a pressing roller rotatably arranged on the leveling frame, the outer peripheral walls of the pressing roller and the leveling roller are both in contact with a plastic belt, and the pressing roller is located on the side of the leveling roller away from the sliding direction, the outer peripheral wall of the leveling roller is inclined, and the leveling roller slides along the direction of the large end of its own roller diameter toward the small end; the trimming component comprises A trimming blade rotatably arranged on the frame, a spraying roller rotatably arranged on the frame for spraying the surface of the tank, and a switching member arranged on the frame, the pressing roller being arranged between the trimming blade and the spraying roller, the trimming blade and the spraying roller selectively corresponding to the outer peripheral wall of the tank, a paint box being arranged on the frame, wherein the paint box contains colored anti-corrosion paint, the spraying roller being connected to the paint box, and the outer peripheral wall of the spraying roller being densely covered with spraying holes; when ridges appear on the outer peripheral wall of the tank, the switching member adjusts the trimming blade to a position corresponding to the surface of the tank to trim the ridge-shaped protrusions; when the outer peripheral wall of the tank remains flat, the switching member adjusts the spraying roller to a position corresponding to the surface of the tank to apply the anti-corrosion paint to the outer surface of the tank.

[0009] By adopting the above technical scheme, when winding the storage tank to form, the technician first heats the mold barrel with a heating element, and then the melted PPH plastic is melted and formed into a plastic belt through an extrusion head, and the plastic belt is wound around the outer surface of the mold barrel. When the plastic belt is wound, the flattening roller is set to press the plastic belt against the mold barrel to achieve stable winding.

[0010] At the same time, through the inclined smoothing roller, when the extrusion head and the smoothing roller slide along the length direction of the mold cylinder, the inclined smoothing roller is arranged in contact with the outer surface of the mold cylinder, so that when the smoothing roller slides in contact with the outer surface of the storage tank, as the large end moves closer to the plastic belt, the smoothing roller will press the overlapping parts tightly and press the thicker parts of the storage tank towards the thinner parts, so that the thickness of the storage tank is uniform, the uniformity of the thickness of the entire storage tank is improved, and the outer surface of the storage tank is less likely to have ridges, thereby reducing the uneven aging speed caused by uneven strength and improving the service life of the storage tank.

[0011] Through the provided trimming blade and spraying roller, after the leveling roller has leveled the outer surface of the storage tank, the provided pressing roller is used to press and detect the outer surface of the storage tank. According to the detection result of the pressing roller, the switching component enables the trimming blade and the spraying roller to select one to correspond to the outer surface of the storage tank. When ridges appear on the outer peripheral wall of the storage tank, the switching component enables the trimming blade to fit and correspond to the outer surface of the storage tank, and trims the ridge-shaped protrusions. When ridges do not appear on the outer peripheral wall of the storage tank, the spraying roller corresponds to the outer surface of the storage tank, and anti-corrosion paint is sprayed on the outer surface of the storage tank to achieve corrosion protection of the outer surface of the storage tank.

[0012] Since the surface of the wound tank still needs to be treated with anti-corrosion after it is formed, and the wound tank is often large in size, manual spraying or large equipment is required to apply the preservative on the outer surface of the tank. The large size of the tank will cause inconvenience in the coating operation. When manually applying the preservative, it is often necessary to lay the tank down horizontally and then apply the preservative to the outer wall of the tank. During the preservative coating process, the side close to the ground is not easy to be treated with anti-corrosion. It is often necessary to first perform anti-corrosion treatment on one side of the tank, and then perform anti-corrosion treatment on the bottom side of the tank after the preservative on the tank is completely dry. Therefore, it is necessary to apply the preservative to the tank at least twice, and the operation efficiency is relatively low. The preservative stored in the paint box is applied to the surface of the tank through the spray hole on the spray roller. During the winding process, the outer surface of the tank is directly trimmed and anti-corrosion treated, thereby improving the efficiency of tank production and anti-corrosion.

[0013] And because the preservative is a colored anti-corrosion paint, when wavy protrusions appear on the surface of the tank, the preservative is not applied at this time, and when the surface of the tank is smooth, the surface of the tank is coated with the preservative. The coated and uncoated parts are easy for technicians to distinguish. Therefore, after production is completed, technicians only need to re-coat the uncoated parts. The operation is simple, and the surface of the tank is flat after production, and uneven strength problems are not likely to occur.

[0014] Optionally, the pressing roller includes a mounting frame and a plurality of detection rollers arranged in sequence on the mounting frame, the roller shafts of the detection rollers are slidably set on the mounting frame, and the detection rollers are in contact with the outer surface of the storage tank, and the trimming blades and the spraying rollers are each provided with a plurality, and the plurality of trimming blades correspond one-to-one to the plurality of detection rollers, and the plurality of spraying rollers also correspond one-to-one to the plurality of detection rollers.

[0015] By adopting the above technical solution, multiple inspection rollers are set up to improve the efficiency and accuracy of the inspection of the outer wall of the storage tank. When a wavy protrusion appears locally, the trimming blade corresponding to the inspection roller corresponding to the protrusion trims and scrapes the protrusion, while the spraying roller corresponding to the inspection roller corresponding to the flat part performs anti-corrosion treatment on the flat part, which does not affect the anti-corrosion operation of other areas. Since the plastic belt is spirally wound and laid, after the protrusion is trimmed, the anti-corrosion treatment is performed on the trimmed protrusion while the inspection roller slides along the axial direction of the mold cylinder, further reducing the workload of subsequent technical personnel.

[0016] The multiple trimming blades and the multiple spraying rollers arranged corresponding to the detection rollers improve the range of the trimming and anti-corrosion of the storage tank, and after the trimming of the protrusions is completed, the anti-corrosion treatment is directly performed on the trimmed part.

[0017] Optionally, the switching member includes a connecting rod rotatably arranged on the mounting frame, one end of the connecting rod is connected to the trimming blade, the other end of the connecting rod is connected to the spray roller, and an elastic return member is provided at the rotating shaft of the connecting rod, and the mounting frame is also provided with an adjustment member for rotationally adjusting the connecting rod.

[0018] By adopting the above technical solution, when the detection roller detects that there is a protrusion on the surface of the tank, the adjusting member drives the connecting rod to rotate, and the trimming blade at one end of the connecting rod rotates to a position that fits the surface of the tank to trim the protrusion. When the detection roller detects that the surface of the tank is flat, the adjusting member drives the connecting rod to rotate, and the spray roller rotates to a position that fits the surface of the tank to achieve corrosion protection on the flat surface.

[0019] Furthermore, by means of the elastic restoring member, when the surface is flat, the elastic restoring member drives the spraying roller to always keep in contact with the storage tank, thereby achieving stable corrosion protection for the flat storage tank surface.

[0020] Optionally, the adjusting member includes a first pressing block disposed at the rotating shaft of the detection roller, a second pressing block is disposed at the rotating shaft of the connecting rod, and the first pressing block and the second pressing block are movably fitted and pressed against each other.

[0021] By adopting the above technical solution, when there are wavy protrusions on the surface of the storage tank, the wavy protrusions are in contact with the detection roller. Since the rotating shaft of the detection roller is slidably set on the mounting frame, the rotating shaft of the detection roller slides, thereby driving the first clamping block to slide, and the first clamping block is pressed against the sliding of the second clamping block, thereby driving the connecting rod to rotate, so that the trimming blade rotates to a position that fits the surface of the storage tank to trim the protrusions and improve the surface flatness.

[0022] Optionally, a connecting rod is provided on the paint box, the spray roller is rotatably arranged on the connecting rod, and the connecting rod is provided with a plurality of spray pipes connected to the spray holes, and the spray pipe is also provided with a periodic part which periodically squeezes the paint in the connecting rod out of the spray holes.

[0023] By adopting the above technical solution, a connecting rod connected to the spray hole is set on the paint box. During spraying, the preservative in the paint box is periodically squeezed out from the spray hole through the set periodic pieces, thereby reducing the waste of raw materials caused by the continuous outflow of the preservative from the spray hole.

[0024] Optionally, the periodic member includes a first blocking plate and a second blocking plate rotatably disposed in the spray pipe, the first blocking plate and the second blocking plate have the same rotation direction, the second blocking plate is slidably disposed in the spray pipe, and the sliding direction of the second blocking plate is consistent with the height direction of the spray pipe, and the second blocking plate is periodically slidably disposed in the spray pipe;

[0025] When the second blocking plate slides toward the first blocking plate, the first blocking plate rotates to open the spray pipe, and the second blocking plate blocks the spray pipe;

[0026] When the second blocking plate slides in a direction away from the first blocking plate, the first blocking plate opens the spray pipe, and the second blocking plate blocks the spray pipe.

[0027] By adopting the above technical solution, during spraying, the second sealing plate periodically moves in the direction away from / close to the first sealing plate, and the gap between the first sealing plate and the second sealing plate is the feeding gap. When the second sealing plate slides in the direction away from the first sealing plate, the first sealing plate opens the spray pipe, and the second sealing plate blocks the spray pipe. At this time, negative pressure is generated between the first sealing plate and the second sealing plate, and the preservative in the paint box is sucked into between the first sealing plate and the second sealing plate through the connecting pipe. When the second sealing plate slides in the direction of the first sealing plate, the first sealing plate rotates to open the spray pipe, and the second sealing plate blocks the spray pipe. At this time, positive pressure is generated between the first sealing plate and the second sealing plate, and the preservative is squeezed out through the opening position at the first sealing plate through the spray hole to coat the outer surface of the storage tank.

[0028] Through the periodic sliding of the second blocking plate, the anti-corrosion agent is periodically squeezed out from the spray hole, thereby reducing the waste caused by the continuous squeezing out of the anti-corrosion agent.

[0029] Optionally, an adjustment ring is provided on the sliding sleeve on the outer wall of the spray tube, the adjustment ring is connected to the second sealing plate, and an adjustment cam is provided in the spray roller, the adjustment cam is tightly fitted against one side of the adjustment ring, and the adjustment ring is elastically arranged on the spray tube.

[0030] By adopting the above technical solution, the arranged adjusting cam rotates with the spray roller, and the adjusting cam presses against the adjusting ring to slide, thereby driving the second sealing plate to slide. The adjusting ring slides back and forth under the elastic force and the adjusting cam, thereby realizing the reciprocating sliding of the second sealing plate and the periodic extrusion of the preservative.

[0031] Optionally, the spray roller is further provided with a tightening sleeve, and the tightening sleeve is made of a soft porous material.

[0032] By adopting the above technical solution, a soft and porous tight-fitting sleeve is provided. After the preservative flows out from the spray hole, the tight-fitting sleeve diffuses and adsorbs the preservative. When the tight-fitting sleeve is attached to the outer surface of the storage tank for anti-corrosion treatment, the tight-fitting sleeve increases the fitting area and the anti-corrosion area, thereby improving the anti-corrosion efficiency of the storage tank. The tight-fitting sleeve has a capacity for holding the preservative, so that the preservative is not easy to drip directly after flowing out from the spray hole, thereby reducing the waste of the preservative.

[0033] Optionally, a collecting box is provided on the frame at the bottom side of the trimming blade, the top side of the collecting box is open, and the opening end of the collecting box is arranged toward the trimming blade.

[0034] By adopting the above technical solution, through the collection box set on the bottom side of the trimming blade, after the shearing of the wavy protrusions is completed, the trimming blade rotates away from the surface of the storage tank, and the waste generated by the shearing falls directly into the collection box. The collection box directly collects the waste generated by the shearing, which is convenient for the subsequent unified collection and treatment of the waste generated by the shearing, thereby improving the subsequent waste recycling rate.

[0035] The present application also provides a seamless welding process for a PPH winding storage tank, comprising the following steps:

[0036] S1, preheating, first preheating the mold cylinder through the heating element to heat the mold cylinder to 90-110 degrees;

[0037] S2, winding molding, after the technicians melt the plastic raw materials through the extruder, they wind the plastic tape onto the surface of the mold barrel through the extruder head, and the plastic tape is always pressed tightly by the set leveling roller. The inclined leveling roller presses the overlapping parts of two adjacent plastic tapes toward one side, so that the thickness of the overlapping parts of the plastic tape is consistent with that of the non-overlapping parts, so that the plastic tape is wound onto the surface of the mold barrel to achieve the molding of the winding storage tank;

[0038] S3, ridge trimming, by pressing the roller against the outer wall of the tank, the ridges of the tank are detected. When edges or protrusions appear, the protrusions are trimmed by the trimming blade provided;

[0039] S4, anti-corrosion treatment, when the pressing roller does not detect any edge or protrusion, the spraying roller is arranged to rotate in contact with the outer wall of the storage tank to perform anti-corrosion treatment on the outer wall of the storage tank.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] 1. Through the inclined leveling roller and the pressing roller, during the production of the storage tank, the inclined leveling roller squeezes the bulges of the overlapping parts to reduce the bulges of the overlapping parts, thereby reducing the uneven thickness caused by the production of the storage tank, improving the uniformity of the surface strength of the storage tank, thereby improving the surface quality of the storage tank, reducing the quality problems caused by the uneven surface of the storage tank, and prolonging the service life of the storage tank;

[0042] 2. Through the trimming blade, spraying roller and switching member, when the pressing roller detects that the surface of the tank is convex or flat, the switching member adjusts the corresponding trimming blade or spraying roller to fit the surface of the tank, so as to trim the convex part or prevent corrosion of the flat part;

[0043] 3. Through the sliding setting of the pressing roller, the rotating setting of the connecting rod, and the trimming blade and the spraying roller respectively set on the connecting rod, the pressing roller detects the surface of the storage tank, thereby switching the rotation angle of the connecting rod to achieve a one-to-one correspondence between the trimming blade, the spraying roller and the surface of the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the overall structure of a seamless welding device for PPH winding storage tanks according to an embodiment of the present application;

[0045] Figure 2 It is a schematic diagram of the connection structure of the leveling roller, the spraying roller, the pressing roller and the trimming blade;

[0046] Figure 3 It is a schematic diagram of the connection structure of the leveling roller, the spraying roller, the pressing roller and the trimming blade from another perspective;

[0047] Figure 4 It is a schematic diagram of the connection structure of the spray roller.

[0048] 1. Frame; 11. Mold barrel; 12. Extrusion head; 13. Heating element; 14. Power element; 2. Smoothing assembly; 22. Smoothing roller; 23. Pressing roller; 231. Detection roller; 232. Mounting frame; 3. Trimming assembly; 31. Trimming blade; 32. Spraying roller; 33. Spraying hole; 34. Switching element; 341. Connecting rod; 342. Torsion spring; 35. Adjusting element; 351. First pressing block; 352. Second pressing block; 36. Paint box; 361. Connecting pipe; 362. Spraying pipe; 37. Periodic element; 371. First blocking plate; 372. Second blocking plate; 373. Adjusting ring; 374. Adjusting cam; 375. Adjusting spring; 38. Pressing sleeve; 39. Collecting box; 4. Power screw; 41. Power motor; 42. Adjusting gear; 43. Co-moving gear. DETAILED DESCRIPTION

[0049] The following is combined with Figure 1-4 This application is described in further detail.

[0050] The present application embodiment discloses a PPH winding tank seamless welding device. Figure 1 A seamless welding device for a PPH winding storage tank includes a frame 1 horizontally fixed on the ground and a mold barrel 11 arranged along the length direction of the frame 1, the mold barrel 11 is cylindrical, and the mold barrel 11 is rotatably arranged on the frame 1, and the rotation axis of the mold barrel 11 is consistent with the axis direction of the mold barrel 11 itself, and a power member 14 for driving the mold barrel 11 to rotate is provided on the frame 1, an extruder is slidably arranged on the frame 1, and the sliding direction of the extruder is consistent with the length direction of the frame 1, and an extrusion head 12 of the extruder is arranged toward the surface of the mold barrel 11, and a heating member 13 is provided on the side of the frame 1 close to the conveying direction of the extrusion head 12, and the heating member 13 heats the surface of the mold barrel 11 to facilitate the adhesion of the plastic belt, and the heating member 13 in this application is a conventional setting, so it is not shown in the figure, and the power member 14 in this application is a power motor 41.

[0051] At the same time, the frame 1 is also provided with a leveling component 2 for leveling the overlapping parts of the outer surface of the storage tank and a trimming component 3 for trimming the leveled surface of the winding tank.

[0052] Reference Figure 1 and Figure 2The leveling component 2 includes a mounting frame 232 slidably arranged on the frame 1, the extruder is arranged on the mounting frame 232, the frame 1 is rotatably connected with a power screw 4, the mounting frame 232 is threadedly assembled on the power screw 4, an adjusting gear 42 is coaxially fixed to the output end of the power motor 41, a coaxially fixed gear 43 is coaxially fixed to the power screw 4, the adjusting gear 42 is meshed with the coaxial gear 43, and a leveling roller 22 is also rotatably arranged on the mounting frame 232, the leveling roller 22 is in contact with the outer surface of the storage tank, and the leveling roller 22 is a conical wheel, that is, the diameter of the leveling roller 22 close to the heating element 13 is smaller than the diameter of the side away from the heating element 13, and the rotating shaft of the leveling roller 22 is consistent with the rotating shaft of the mold cylinder 11.

[0053] The leveling assembly 2 also includes a pressing roller 23 rotatably disposed on the mounting frame 232 and located on the side of the leveling roller 22 away from the heating element 13. The pressing roller 23 includes a plurality of detection rollers 231 arranged in sequence along the length direction of the frame 1. The outer peripheral walls of the detection rollers 231 are all in contact with the outer peripheral walls of the storage tank.

[0054] At the same time, the trimming component 3 includes a trimming blade 31 rotatably arranged on the mounting frame 232, a spraying roller 32 rotatably arranged on the mounting frame 232, and a switching member 34 arranged on the mounting frame 232. The trimming blade 31 and the spraying roller 32 correspond to the surface of the storage tank one by one, and a paint box 36 is also provided on the mounting frame 232. The paint box 36 contains preservative paint. The spraying roller 32 is connected to the paint box 36. The outer peripheral wall of the spraying roller 32 is densely covered with spraying holes 33. The spraying roller 32 is movably fitted with the outer peripheral wall of the storage tank, and the trimming blade 31 is movably fitted with the outer peripheral wall of the storage tank.

[0055] When ridges appear on the outer wall of the tank, the switching member 34 adjusts the trimming blade 31 to a position corresponding to the surface of the tank to trim the ridge-like protrusions; when the outer wall of the tank remains flat, the switching member 34 adjusts the spray roller 32 to a position corresponding to the surface of the tank to apply anti-corrosion paint to the outer surface of the tank.

[0056] Reference Figure 2 and Figure 3, there are multiple trimming blades 31 and spraying rollers 32, and the multiple trimming blades 31 correspond to the multiple detection rollers 231 one by one, and the multiple spraying rollers 32 also correspond to the multiple detection rollers 231 one by one. One trimming blade 31, one detection roller 231 and one spraying roller 32 correspond to a group. In the same group, the detection roller 231 is arranged between the trimming blade 31 and the spraying roller 32, and the spraying roller 32 is located on the top side of the detection roller 231, and the trimming blade 31 is located on the bottom side of the detection roller 231. The switching member 34 includes a connecting rod 341 rotatably connected to the mounting frame 232, and the connecting rod 341 is an "L"-shaped rod. One end of the connecting rod 341 is connected to the trimming blade 31, and the other end of the connecting rod 341 is connected to the spraying roller 32. An elastic return member is provided at the rotating shaft of the connecting rod 341, and the elastic return member is a torsion spring 342. The mounting frame 232 is also provided with an adjusting member 35 for rotating and adjusting the connecting rod 341.

[0057] Reference Figure 3 and Figure 4 The adjusting member 35 includes a first pressing block 351 disposed at the rotating shaft of the detection roller 231, and a second pressing block 352 is disposed at the rotating shaft of the connecting rod 341, and the first pressing block 351 and the second pressing block 352 are movably fitted and pressed. When there is a corrugated protrusion on the surface of the storage tank, the corrugated protrusion fits the detection roller 231. Since the rotating shaft of the detection roller 231 is slidably disposed on the mounting frame 232, the rotating shaft of the detection roller 231 slides, thereby driving the first pressing block 351 to slide, and the first pressing block 351 presses against the second pressing block 352 to slide, thereby driving the connecting rod 341 to rotate, so that the trimming blade 31 rotates to a position that fits the surface of the storage tank to trim the protrusion and improve the surface flatness.

[0058] A connecting rod is provided on the paint box 36, and the spray roller 32 is rotatably set on the connecting rod. The connecting rod is provided with a plurality of spray pipes 362 connected to the spray holes 33, and the spray pipes 362 are also provided with a periodic part 37 that periodically squeezes the paint in the connecting rod from the spray holes 33.

[0059] The periodic member 37 includes a first blocking plate 371 and a second blocking plate 372 which are rotatably arranged in the spray tube 362. The rotation directions of the first blocking plate 371 and the second blocking plate 372 are consistent. The second blocking plate 372 is slidably arranged in the spray tube 362. The sliding direction of the second blocking plate 372 is consistent with the height direction of the spray tube 362. The first blocking plate 371 and the second blocking plate 372 are both provided with blocking torsion springs at the rotating shafts. The blocking torsion springs drive the first blocking plate 371 and the second blocking plate 372 to always keep in contact with the inner wall of the spray tube 362. The second blocking plate 372 is periodically slidably arranged in the spray tube 362.

[0060] When the second blocking plate 372 slides toward the first blocking plate 371, the first blocking plate 371 rotates to open the spraying pipe 362, and the second blocking plate 372 blocks the spraying pipe 362;

[0061] When the second blocking plate 372 slides in a direction away from the first blocking plate 371 , the first blocking plate 371 opens the spraying tube 362 , and the second blocking plate 372 blocks the spraying tube 362 .

[0062] An adjusting ring 373 is provided on the sliding sleeve on the outer peripheral wall of the spray tube 362, and an adjusting spring 375 is fixedly connected between the adjusting ring 373 and the spray tube 362, and the adjusting spring 375 drives the adjusting ring 373 to always slide in the direction away from the first sealing plate 371, the adjusting ring 373 is connected to the second sealing plate 372, and an adjusting cam 374 is fixed in the spray roller 32, the adjusting cam 374 is tightly fitted with one side of the adjusting ring 373, and the adjusting ring 373 is elastically arranged on the spray tube 362, and a tightening sleeve 38 is also provided on the spray roller 32, and the tightening sleeve 38 is made of soft porous material. In this application, the tightening sleeve 38 is a sponge sleeve, and a collecting box 39 is provided on the frame 1 at the bottom side of the trimming blade 31, and the top side of the collecting box 39 is open, and the opening end of the collecting box 39 is arranged toward the trimming blade 31.

[0063] When spraying, the second blocking plate 372 periodically moves in the direction away from / close to the first blocking plate 371. The gap between the first blocking plate 371 and the second blocking plate 372 is the feeding gap. When the second blocking plate 372 slides in the direction away from the first blocking plate 371, the first blocking plate 371 opens the spray pipe 362, and the second blocking plate 372 blocks the spray pipe 362. At this time, negative pressure is generated between the first blocking plate 371 and the second blocking plate 372, which seals the spray pipe 362. The antiseptic is sucked between the first blocking plate 371 and the second blocking plate 372 through the connecting pipe 361. When the second blocking plate 372 slides toward the first blocking plate 371, the first blocking plate 371 rotates to open the spray pipe 362, and the second blocking plate 372 blocks the spray pipe 362. At this time, a positive pressure is generated between the first blocking plate 371 and the second blocking plate 372, and the antiseptic is squeezed out through the opening position of the first blocking plate 371 and the spray hole 33 to coat the outer surface of the storage tank.

[0064] Through the periodic sliding of the second blocking plate 372, the antiseptic is periodically squeezed out from the spray hole 33, thereby reducing the waste caused by the continuous squeezing out of the antiseptic.

[0065] The soft and porous tight-fitting sleeve 38 is set, and after the preservative flows out from the spray hole 33, the set tight-fitting sleeve 38 diffuses and adsorbs the preservative. When the tight-fitting sleeve 38 is attached to the outer surface of the storage tank for anti-corrosion treatment, the tight-fitting sleeve 38 increases the fitting area and the anti-corrosion area, thereby improving the anti-corrosion efficiency of the storage tank. The set tight-fitting sleeve 38 has a capacity for accommodating the preservative, so that the preservative is not easy to drip directly after flowing out from the spray hole 33, thereby reducing the waste of the preservative.

[0066] By setting a collecting box 39 on the bottom side of the trimming blade 31, after the shearing of the wavy protrusions is completed, the waste generated by the shearing directly falls into the collecting box 39 during the process of the trimming blade 31 rotating away from the surface of the storage tank. The collecting box 39 directly collects the waste generated by the shearing, which is convenient for the subsequent unified collection and treatment of the waste generated by the shearing, thereby improving the subsequent waste recycling rate.

[0067] The embodiment of the present application also discloses a seamless welding process for a PPH winding storage tank: S1, preheating, first preheating the mold cylinder 11 by a heating element 13, so that the mold cylinder 11 is heated to 90-110 degrees;

[0068] S2, winding molding, after the technician melts the plastic raw material through the extruder, the plastic tape is wound onto the surface of the mold tube 11 through the extruder head 12, and the plastic tape is always pressed against the plastic tape by the flattening roller 22, and the inclined flattening roller 22 presses the overlapping part of two adjacent plastic tapes toward one side, so that the thickness of the overlapping part of the plastic tape is consistent with that of the non-overlapping part, so that the plastic tape is wound onto the surface of the mold tube 11, and the winding storage tank is formed;

[0069] S3, ridge trimming, by pressing the roller 23 against the outer wall of the tank, the ridge detection of the tank is realized, and when edges or protrusions appear, the protrusions are trimmed by the trimming blade 31;

[0070] S4, anti-corrosion treatment, when the pressing roller 23 does not detect any edge or protrusion, the spraying roller 32 is arranged to rotate in contact with the outer wall of the storage tank to perform anti-corrosion treatment on the outer wall of the storage tank.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A seamless welding device for a PPH winding storage tank, comprising a frame (1) and a mold barrel (11) rotatably arranged on the frame (1), the frame (1) also being provided with an extrusion head (12) and a heating element (13), the extrusion head (12) being arranged toward the outer surface of the mold barrel (11), characterized in that: The frame (1) is also provided with a leveling component (2) for leveling the overlapping parts of the windings, and a trimming component (3) for trimming the surface of the winding tank after leveling. The leveling assembly (2) comprises a leveling frame (21) slidably arranged on the frame (1), a leveling roller (22) and a pressing roller (23) rotatably arranged on the leveling frame (21), the pressing roller (23) and the outer peripheral walls of the leveling roller (22) are both in contact with the plastic belt, and the pressing roller (23) is located on the side of the leveling roller (22) away from the sliding direction, the outer peripheral wall of the leveling roller (22) is inclined, and the leveling roller (22) slides in the direction from the large end of its own roller diameter to the small end; The trimming assembly (3) comprises a trimming blade (31) rotatably arranged on the frame (1), a spraying roller (32) rotatably arranged on the frame (1) for spraying the surface of the storage tank, and a switching member (34) arranged on the frame (1); the pressing roller (23) is arranged between the trimming blade (31) and the spraying roller (32); one of the trimming blade (31) and the spraying roller (32) corresponds to the outer peripheral wall of the storage tank; a paint box (36) is arranged on the frame (1); colored anti-corrosion paint is stored in the paint box (36); the spraying roller (32) is connected to the paint box (36); and the outer peripheral wall of the spraying roller (32) is densely covered with spraying holes (33); When ridges appear on the outer peripheral wall of the storage tank, the switching member (34) adjusts the trimming blade (31) to a position corresponding to the surface of the storage tank to trim the ridge-shaped protrusions; When the outer peripheral wall of the storage tank remains flat, the switching member (34) adjusts the spray roller (32) to a position corresponding to the surface of the storage tank, and applies the anti-corrosion paint to the outer surface of the storage tank.

2. A PPH winding storage tank seamless welding equipment according to claim 1, characterized in that: The pressing roller (23) comprises a mounting frame (232) and a plurality of detection rollers (231) arranged in sequence on the mounting frame (232); roller shafts of the detection rollers (231) are slidably arranged on the mounting frame (232), and the detection rollers (231) are in contact with the outer surface of the storage tank; a plurality of trimming blades (31) and a plurality of spraying rollers (32) are each provided; the plurality of trimming blades (31) correspond one-to-one to the plurality of detection rollers (231); and the plurality of spraying rollers (32) also correspond one-to-one to the plurality of detection rollers (231).

3. A PPH winding storage tank seamless welding equipment according to claim 2, characterized in that: The switching member (34) comprises a connecting rod (341) rotatably arranged on the mounting frame (232), one end of the connecting rod (341) being connected to the trimming blade (31), the other end of the connecting rod (341) being connected to the spraying roller (32), and an elastic return member being provided at the rotating shaft of the connecting rod (341), and an adjusting member (35) for rotationally adjusting the connecting rod (341) being further provided on the mounting frame (232).

4. A PPH winding storage tank seamless welding equipment according to claim 3, characterized in that: The adjusting member (35) comprises a first pressing block (351) provided at the rotating shaft of the detection roller (231), a second pressing block (352) is provided at the rotating shaft of the connecting rod (341), and the first pressing block (351) and the second pressing block (352) are movably fitted and pressed against each other.

5. A PPH winding storage tank seamless welding equipment according to claim 4, characterized in that: The paint box (36) is provided with a connecting rod, the spray roller (32) is rotatably arranged on the connecting rod, and the connecting rod is provided with a plurality of spray pipes (362) connected to the spray holes (33). The spray pipes (362) are also provided with a periodic part (37) for periodically squeezing the paint in the connecting rod from the spray holes (33).

6. A PPH winding storage tank seamless welding equipment according to claim 5, characterized in that: The periodic member (37) comprises a first blocking plate (371) and a second blocking plate (372) which are rotatably arranged in the spray pipe (362); the first blocking plate (371) and the second blocking plate (372) have the same rotation direction; the second blocking plate (372) is slidably arranged in the spray pipe (362); the sliding direction of the second blocking plate (372) is consistent with the height direction of the spray pipe (362); the second blocking plate (372) is periodically slidably arranged in the spray pipe (362); When the second blocking plate (372) slides in the direction of the first blocking plate (371), the first blocking plate (371) rotates to open the spray pipe (362), and the second blocking plate (372) blocks the spray pipe (362); When the second blocking plate (372) slides in a direction away from the first blocking plate (371), the second blocking plate (372) opens the spray pipe (362) and the first blocking plate (371) blocks the spray pipe (362).

7. A PPH winding storage tank seamless welding equipment according to claim 6, characterized in that: An adjusting ring (373) is slidably sleeved on the outer peripheral wall of the spray tube (362), the adjusting ring (373) is connected to the second blocking plate (372), and an adjusting cam (374) is provided inside the spray roller (32), the adjusting cam (374) is tightly fitted against one side of the adjusting ring (373), and the adjusting ring (373) is elastically arranged on the spray tube (362).

8. A PPH winding storage tank seamless welding equipment according to claim 7, characterized in that: The spray roller (32) is also provided with a tightening sleeve (38), and the tightening sleeve (38) is made of a soft porous material.

9. A PPH winding storage tank seamless welding equipment according to claim 8, characterized in that: A collecting box (39) is provided on the frame (1) at the bottom side of the trimming blade (31); the top side of the collecting box (39) is open, and the opening end of the collecting box (39) is arranged toward the trimming blade (31).

10. A seamless welding process for a PPH winding storage tank, applied to a seamless welding device for a PPH winding storage tank as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1, preheating, first preheating the mold cylinder (11) by means of a heating element (13) so that the mold cylinder (11) is heated to 90-110 degrees; S2, winding molding, after the technician melts the plastic raw material through an extruder, the technician winds the plastic tape onto the surface of the mold cylinder (11) through an extruder head (12), and the plastic tape is always pressed against the surface by a flattening roller (22). The flattening roller (22) is tilted to press the overlapping parts of two adjacent plastic tapes toward one side, so that the thickness of the overlapping parts of the plastic tape is consistent with that of the non-overlapping parts, and the plastic tape is wound onto the surface of the mold cylinder (11), thereby realizing the molding of the winding storage tank; S3, ridge trimming, by fitting the pressing roller (23) with the outer peripheral wall of the storage tank, the ridges of the storage tank are detected, and when edges or protrusions appear, the protruding parts are trimmed flat by a trimming blade (31); S4, anti-corrosion treatment, when the pressing roller (23) does not detect any edge or protrusion, the spraying roller (32) is arranged to rotate in contact with the outer peripheral wall of the storage tank to perform anti-corrosion treatment on the outer peripheral wall of the storage tank.

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