Lining pipe sleeving device for glass fiber reinforced plastic lining pipe machining

Abstract

The lining pipe sleeving device comprises a base, a fixing cylinder with an opening in one end is installed on the base, a pushing plate and a pushing disc are arranged in the fixing cylinder and movably connected through a supporting rod, a driving lead screw is arranged in the fixing cylinder, and the pushing plate is movably connected with the pushing disc through a supporting rod. A speed reduction motor is installed on the base, a guide column is fixed to the inner end of the fixing cylinder, a ventilation groove is formed in the guide column, an air blowing hole is formed in the outer side of the guide column, a supporting frame is installed on the base in a sliding mode, and a heating assembly used for heating a liner tube is arranged on the fixing cylinder. According to the device, heating, cooling and pushing-in are integrated, the liner tube does not need to be soaked and washed, the liner tube does not need to be frequently transferred, the liner tube can be rapidly heated, cooled and pushed in, the machining efficiency of the liner tube is greatly improved, meanwhile, a large number of water and electricity resources are saved, and the concept of energy conservation and emission reduction is met.

Description

Technical Field

[0001] The invention relates to the technical field of glass fiber reinforced plastic liner processing, in particular to an inner liner pipe inserting device for glass fiber reinforced plastic liner processing. Background Art

[0002] FRP-lined pipe is a composite pipe that combines a glass fiber reinforced plastic (FRP) structural layer with a polytetrafluoroethylene (PTFE / F4) lining. It combines mechanical strength with extreme corrosion resistance and is mainly used for transporting highly corrosive media in the chemical, pharmaceutical, and power industries. The outer layer of the glass fiber reinforced resin matrix provides high mechanical strength and impact resistance. It is lightweight (density is only 1 / 4 of that of steel) and is suitable for overhead or buried installation. The polytetrafluoroethylene (PTFE) lining of the inner layer is usually 2-5mm thick and resistant to strong acids (such as boiling hydrochloric acid and 98% concentrated sulfuric acid), strong alkalis, and organic solvents. It can withstand long-term temperatures of -196°C to 250°C and can resist corrosion from most chemical media such as nitric acid, hydrofluoric acid, and aqua regia, solving the corrosion and leakage problems of traditional metal pipes. There are many ways to produce FRP liners, among which the tight lining process is one of the most common methods. During the liner installation process, the "warm water immersion-cooling and pushing-in liner" process is adopted. It is mainly used to solve the installation difficulties caused by the difference in thermal expansion coefficient between PTFE liners and FRP pipes. The core steps are as follows: soak the PTFE liner in 80-90℃ warm water to soften and expand it. The outer diameter of the liner can be temporarily increased by 1-2%. It is then rinsed with cold water to quickly shrink it to a state slightly larger than the inner diameter of the FRP pipe (about 0.5% interference). The liner is then pushed into the steel pipe by a hydraulic traction device, using the "memory effect" of PTFE to achieve a close fit with the inner wall of the steel pipe.

[0003] However, when implementing the tight lining process, the above-mentioned existing technology not only requires soaking the liner in warm water for 30 minutes, but also requires rinsing with cold water for cooling, and then pushing the liner into the fiberglass pipe through a hydraulic traction device, and finally performing hot air heating and flanging. It requires a lot of equipment, and the liner is transferred back and forth. Not only is the operation cumbersome, but there are too many equipments, and a large amount of water and electricity are required to achieve the requirements of heating, cooling, pushing and reheating and flanging, which increases energy consumption and does not conform to the concept of energy conservation and emission reduction. Therefore, a special tight lining process equipment is needed to reduce the processing equipment and transfer times required for the liner, which is simple to operate and reduces energy consumption, and meets the concept of energy conservation and emission reduction. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides an inner liner pipe insertion device for FRP liner processing to solve the problems that the existing FRP liner tight lining process requires a lot of equipment and frequent transfer of liners, which is not only cumbersome to operate, but also has too much equipment, increased energy consumption, and is not in line with the concept of energy conservation and emission reduction.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an inner liner insertion device for glass fiber reinforced plastic liner processing, comprising a base, a horizontally arranged fixed cylinder fixedly installed on the base through support legs, and the inner diameter of the fixed cylinder is equal to the outer diameter of the liner after heating and expansion, one end of the fixed cylinder is open, and a disc-shaped push plate and a push plate are respectively provided inside the fixed cylinder, the liner is located between the push plate and the push plate, the push plate and the push plate are movably connected by a support rod that can move radially along the push plate, and the support rod is fixed close to the push plate and facing one side of the push plate. A limit plate is provided, which can limit and fix the push plate so that the push plate and the push plate maintain a certain distance. A driving screw that cooperates with the push plate thread is horizontally provided in the fixed cylinder, and one end of the driving screw passes through the fixed cylinder. A reduction motor and a cooling fan are installed on the base. The cooling fan is a common technology in the prior art, which includes a refrigeration module similar to the structure of an air conditioner, which can blow out temperature-controlled cold air. Its specific structure and working principle are not explained in detail here. The output end of the reduction motor is transmission-connected to the end of the driving screw that passes through the fixed cylinder; A plurality of guide columns are fixed to the inner end of the fixed cylinder and pass through the push plate horizontally. A ventilation slot is provided in the guide column, and a plurality of equidistantly arranged air blowing holes are provided on the outer side of the guide column. The air outlet of the refrigeration fan is connected to the ventilation slot through an air guide main pipe and an air guide branch pipe. A number of height-adjustable support columns are slidably mounted on the base, and a glass fiber reinforced plastic pipe is fixed on the top of the support column through a semicircular support frame. The inner diameter of the semicircular support frame is constant and equal to the outer diameter of the glass fiber reinforced plastic pipe. A heating component for heating the liner is provided on the fixed cylinder, and a connecting piece for connecting to the glass fiber reinforced plastic pipe is provided at the opening of the fixed cylinder.

[0006] Preferably, an annular heating notch is provided in the middle of the fixed cylinder, and the length of the heating notch is greater than the length of the liner tube. The heating assembly includes a heat conducting plate welded in the heating notch, and the heat conducting plate is a cylindrical structure, and the heat conducting plate is fixedly connected to both ends of the heating notch by welding. An electric heating tube wrapped around the central axis of the fixed cylinder is provided outside the heat conducting plate, a sealed movable cover is provided on the outside of the heating notch, and an insulation layer is provided on the inside of the movable cover. The insulation layer mentioned in this specification is a common insulation structure in the prior art, which can be rock wool or ceramic fiber, which has good thermal insulation effect, prevents the hot air in the heating assembly from dissipating outward through the movable cover, improves the heating effect, and saves resources.

[0007] Preferably, the push plate is provided with four radially extending T-shaped slots on one side facing the push plate, one end of the support rod is fixedly provided with a T-shaped slider that slides in cooperation with the T-shaped slot, the push plate is penetrated by four guide slots corresponding to the T-shaped slots, the other end of the support rod penetrates the guide slot, the width of the guide slot is equal to the outer diameter of the support rod, and the support rod can slide in the guide slot, and the push plate and the push plate are fixedly installed with four hydraulic cylinders arranged in the same direction as the guide slots on one side facing the opening of the fixed cylinder. The movable end of the hydraulic cylinder is provided with an arc-shaped piece corresponding to the support rod, and the arc-shaped piece fits tightly with the outer wall of the support rod. By providing the arc-shaped piece, the hydraulic cylinder can push the support rod to move along the guide groove. The four support rods are provided with a T-shaped mounting groove on one side facing the side wall of the fixed cylinder, and the mounting groove horizontally passes through the end of the support rod away from the T-shaped slider. An arc-shaped support piece is slidably installed in the mounting groove, and a sliding bar that slides with the mounting groove is provided on the inner side of the support piece. The outer side of the support piece fits tightly with the inner wall of the liner. During specific use, the liner is placed in the fixed cylinder and located between the push plate and the push plate. The eight hydraulic cylinders are started synchronously. The hydraulic cylinders extend and push the support rod to move through the arc-shaped piece until the support piece on the support rod fits tightly with the inner side of the liner, thereby preventing the liner from softening and deforming after heating.

[0008] Preferably, the center of the push plate is provided with a threaded groove that engages with the threaded drive screw. When the drive screw rotates, the threaded groove and the drive screw engage to drive the push plate to move horizontally. The side of the push plate is provided with four through-holes that are evenly distributed around the threaded groove. The guide posts are provided with four holes that extend through the four through-holes, and the guide posts are slidably engaged with the through-holes. With this arrangement, the push plate can be limited and guided by the engagement of the guide posts with the through-holes, so that the push plate can move horizontally along the guide posts under the action of the drive screw.

[0009] Preferably, a circular chamfer is provided on one side edge of the pushing plate near the opening of the fixed cylinder. By providing the center chamfer, the pushing plate can be easily inserted into the interior of the glass fiber reinforced plastic tube. A plurality of driving wheels are provided at the bottom of the base, and a traction block is provided at the end of the base. A traction ring is installed on the traction block. As a preferred embodiment, a driving assembly for driving the driving wheel to move can also be provided on the base. The driving assembly is a common technology in the prior art. It is the same as the driving assembly of a vehicle and can drive the entire device to move through the driving wheel. Its specific structure and cooperating components will not be explained in detail here. The traction block and the traction ring are provided to facilitate the movement of the pulling device by pulling the vehicle.

[0010] Preferably, the air outlet of the cooling fan is connected to a main air duct, the end of which is connected to four branch air ducts via a five-way joint. The outlet ends of the four branch air ducts respectively pass through the sealed end of the fixing cylinder and are fixedly connected to the ventilation slots in the guide columns. In this arrangement, the air blown by the cooling fan passes through the main air duct and the branch air ducts and enters the ventilation slots in the four guide columns respectively, and is then blown out through the air holes in the ventilation slots, thereby achieving a cooling effect on the fluorine-lined tube.

[0011] Preferably, the upper surface of the base is provided with an adjustment slot extending along the length of the base, the adjustment slot being provided with a plurality of equally spaced adjustment holes, the adjustment slot being provided with a plurality of slidingly engaged load-bearing blocks, the load-bearing blocks being provided with fixing holes corresponding to the adjustment holes, and the adjustment holes and the fixing holes being fixed thereto by screws. With this arrangement, the adjustment slot and the load-bearing blocks cooperate to allow the load-bearing blocks to move horizontally along the adjustment slot, facilitating adjustment of the position of the support frame, while screws are sequentially passed through the adjustment holes and the fixing holes to achieve a limited and fixed position of the load-bearing blocks.

[0012] Preferably, the support column comprises an outer cylinder fixedly connected to the surface of the load-bearing block, a vertical inner column disposed within the outer cylinder, the inner column having a plurality of equally spaced support holes formed therein, and the outer cylinder being provided with screws that engage with the support holes. Because the inner column can be freely raised and lowered within the outer cylinder, and the screws and support holes cooperate to secure the inner column at a predetermined height within the outer cylinder, the support column can be adjusted to a desired height.

[0013] Preferably, one end of the driving screw that passes through the fixed cylinder is a smooth surface, and a bearing is provided at the penetration point. By providing the bearing, the driving screw can stably rotate within the fixed cylinder. The end of the driving screw extending from the fixed cylinder and the output end of the reduction motor are both fixedly mounted with a transmission gear, and the two transmission gears are coupled via a transmission chain. In this arrangement, through the transmission coordination of the transmission gear and the transmission chain, the reduction motor can drive the driving screw to rotate synchronously, and then can control the driving screw to push the push plate to move. The reduction motor mentioned in this specification is an assembly of the driving motor and the reduction box, the output end of the driving motor is connected to the input end of the reduction box, and the transmission gear is provided at the output end of the reduction box.

[0014] Preferably, the connecting piece includes a connecting block fixedly connected to the opening of the fixed cylinder, and there are at least four connecting blocks, which are evenly welded at the opening of the fixed cylinder. A connecting plate is welded on the outside of the connecting block, and a limiting block is welded through a connecting column toward one end of the glass fiber reinforced plastic pipe. The outer shell of the connecting column is provided with a rotatable rotating block, and the rotating block corresponds to the edge of the glass fiber reinforced plastic pipe. With such an arrangement, after aligning the glass fiber reinforced plastic pipe with the opening of the fixed cylinder, the rotating block is rotated so that the rotating block rests against the rear side of the edge of the glass fiber reinforced plastic pipe, so that the glass fiber reinforced plastic pipe and the fixed cylinder are tightly connected together. At the same time, when the pushing plate and the liner are pushed into the glass fiber reinforced plastic pipe, the glass fiber reinforced plastic pipe is subjected to thrust, and the rotating block is used to overcome the thrust to prevent the glass fiber reinforced plastic pipe from detaching from the fixed cylinder, so that the liner can be smoothly pushed into the interior of the glass fiber reinforced plastic pipe.

[0015] The present invention provides a liner insertion device for glass fiber reinforced plastic liner processing, which has the following beneficial effects: The present invention uses a heating component to quickly heat the liner tube, controls the liner tube at 80-90°C, replaces the traditional warm water immersion method, and softens and expands it, and then uses a refrigeration fan to blow out cold air to rapidly cool the fluorine lining tube, causing the liner tube to shrink rapidly, and finally pushes the liner tube into the FRP pipe through the cooperation of the driving screw and the push plate to complete the liner tube insertion work. The present invention integrates heating, cooling and pushing into one, and there is no need to soak and flush the liner tube, nor to frequently transport the liner tube, so that the liner tube can be quickly heated, cooled and pushed in, greatly improving the processing efficiency of the liner tube, while saving a large amount of water and electricity resources, in line with the concept of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall appearance of the present invention; Figure 2 It is a schematic diagram of the overall internal structure of the present invention; Figure 3 for Figure 2 Schematic diagram of the structure after removing the fiberglass pipe, push plate and push plate; Figure 4 It is a schematic diagram of the connection between the push plate and the push plate of the present invention; Figure 5 A schematic side view of a push plate of the present invention; Figure 6 for Figure 5 Schematic diagram of the structure after removing the hydraulic cylinder; Figure 7 It is a schematic diagram of the inner side of the sealed end of the fixed cylinder of the present invention; Figure 8 A side view of the push plate of the present invention Figure 9 for Figure 8 Schematic diagram of the structure after removing the hydraulic cylinder; Figure 10 It is a structural schematic diagram of the support column and the load-bearing block of the present invention; Figure 11 It is a structural schematic diagram of the connecting piece of the present invention.

[0017] In the picture: 1. Base; 2. Fixed cylinder; 201. Heating notch; 3. Push plate; 301. Threaded groove; 302. T-shaped slide; 303. Through hole; 4. Push plate; 401. Guide groove; 402. Center chamfer; 5. Drive screw; 6. Guide column; 601. Ventilation slot; 602. Blowing hole; 7. Support column; 701. Outer cylinder; 702. Inner column; 703. Support hole; 8. Drive chain; 9. Heating assembly; 901. Heat conducting plate; 902. Electric heating tube; 903. Insulation layer; 904. Movable cover; 10. Drive gear; 11. Reducer motor; 12. Air guide branch pipe; 13. Refrigeration fan 14. Air guide main pipe; 15. Support leg; 16. Support rod; 1601. T-shaped slider; 1602. Limit plate; 1603. Support plate; 1604. Mounting slot; 1605. Mounting part; 17. Hydraulic cylinder; 1701. Arc-shaped piece; 18. Connecting part; 1801. Connecting block; 1802. Connecting plate; 1803. Connecting column; 1804. Rotating block; 1805. Limit block; 19. Fiberglass pipe; 20. Driving wheel; 21. Traction block; 22. Traction ring; 23. Support frame; 24. Load-bearing block; 2401. Fixing hole; 25. Adjustment slot; 26. Adjustment hole; 27. Bearing. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-11The present invention provides a technical solution: an inner liner insertion device for glass fiber reinforced plastic liner processing, comprising a base 1, on which a horizontally arranged fixed cylinder 2 is fixedly installed through a support leg 15, the inner diameter of the fixed cylinder 2 being equal to the outer diameter of the liner after heating and expansion, so that the fixed cylinder 2 does not affect the normal expansion and contraction of the liner, one end of the fixed cylinder 2 is open, and a disc-shaped push plate 3 and a push plate 4 are respectively provided inside the fixed cylinder 2. As a preferred embodiment, the push plate 4 can be made of heat-resistant rubber material, which can greatly reduce the weight of the push plate 4 and avoid the push plate 4 being too heavy and causing the support rod 16 to bend. The liner is located between the push plate 3 and the push plate 4, and the push plate 3 and the push plate 4 are connected by a support that can move radially along the push plate 3. The support rod 16 is movably connected, and the support rod 16 is fixedly provided with a limit plate 1602 on one side of the push plate 4 facing the push plate 3. By setting the limit plate 1602, the push plate 4 can be limited and fixed, so that the push plate 4 and the push plate 3 maintain a certain distance. A driving screw 5 that is threadedly matched with the push plate 3 is horizontally arranged in the fixed cylinder 2. One end of the driving screw 5 passes through the fixed cylinder 2. A reduction motor 11 and a cooling fan 13 are installed on the base 1. The cooling fan 13 is a common technology in the prior art, which includes a refrigeration module similar to the structure of an air conditioner, which can blow out temperature-controlled cold air. Its specific structure and working principle are not explained in detail here. The output end of the reduction motor 11 is transmission-connected to the end of the driving screw 5 that passes through the fixed cylinder 2. A plurality of guide posts 6 are fixed to the inner end of the fixed cylinder 2 and extend horizontally through the push plate 3. A ventilation slot 601 is defined within the guide posts 6, and a plurality of equidistantly arranged air blowing holes 602 are defined on the outer side of the guide posts 6. The air outlet of the cooling fan 13 is connected to the ventilation slot 601 via the main air guide pipe 14 and the branch air guide pipe 12. A number of height-adjustable support columns 7 are slidably mounted on the base 1. A glass fiber reinforced plastic pipe 19 is fixed to the top of the support column 7 via a semicircular support frame 23. The inner diameter of the semicircular support frame 23 is constant and equal to the outer diameter of the glass fiber reinforced plastic pipe 19. In this way, the glass fiber reinforced plastic pipe 19 can be stably fixed in the support frame 23 to prevent the glass fiber reinforced plastic pipe 19 from shaking in the support frame 23. A heating component 9 for heating the liner is provided on the fixed tube 2, and a connector 18 for connecting to the glass fiber reinforced plastic pipe 19 is provided at the opening of the fixed tube 2.

[0020] In this embodiment, an annular heating gap 201 is provided in the middle section of the fixed cylinder 2, and the length of the heating gap 201 is greater than the length of the liner. The heating component 9 includes a heat conducting plate 901 welded in the heating gap 201. The heat conducting plate 901 is a cylindrical structure, and the heat conducting plate 901 is fixedly connected to both ends of the heating gap 201 by welding. An electric heating tube 902 wrapped around the central axis of the fixed cylinder 2 is provided on the outside of the heat conducting plate 901. A sealed movable cover 904 is provided on the outside of the heating gap 201, and an insulation layer 903 is provided on the inside of the movable cover 904. The insulation layer 903 mentioned in this specification is a common insulation structure in the prior art, which can be rock wool or ceramic fiber, which has good thermal insulation effect, preventing the hot air in the heating component 9 from dissipating outward through the movable cover 904, thereby improving the heating effect and saving resources.

[0021] In this embodiment, four evenly distributed and radially extending T-shaped slots 302 are provided on the side of the push plate 3 facing the push plate 4, and a T-shaped slider 1601 is fixedly provided on one end of the support rod 16 to slide with the T-shaped slot 302. Four guide slots 401 corresponding to the T-shaped slot 302 are penetrated on the push plate 4, and the other end of the support rod 16 penetrates the guide slot 401. The width of the guide slot 401 is equal to the outer diameter of the support rod 16, and the support rod 16 can slide in the guide slot 401. Four hydraulic cylinders 17 arranged in the same direction as the guide slot 401 are fixedly installed on the side of the push plate 3 and the push plate 4 facing the opening of the fixed cylinder 2. The movable end of the hydraulic cylinder 17 is provided with a The arc-shaped piece 1701 corresponding to the support rod 16 fits tightly against the outer wall of the support rod 16. By setting the arc-shaped piece 1701, the hydraulic cylinder 17 can push the support rod 16 to move along the guide groove 401, avoiding misalignment of the support rod 16 and the hydraulic cylinder 17. A T-shaped mounting groove 1604 is provided on the side of the four support rods 16 facing the side wall of the fixed tube 2, and the mounting groove 1604 horizontally passes through the end of the support rod 16 away from the T-shaped slider 1601. An arc-shaped support piece 1603 is slidably installed in the mounting groove 1604, and a sliding bar that slides with the mounting groove 1604 is provided on the inner side of the support piece 1603. The outer side of the support piece 1603 fits tightly against the inner wall of the liner. During specific use, the liner is placed in the fixed tube 2 and located between the push plate 3 and the push plate 4. The eight hydraulic cylinders 17 are started synchronously. The hydraulic cylinders 17 extend and push the support rod 16 to move through the arc-shaped piece 1701 until the support piece 1603 on the support rod 16 fits tightly with the inner side of the liner to prevent the liner from becoming soft and deformed after heating.

[0022] In this embodiment, the center of the push plate 3 is provided with a threaded groove 301 that is threadably engaged with the drive screw 5. As the drive screw 5 rotates, the threaded groove 301 cooperates with the drive screw 5, allowing the drive screw 5 to drive the push plate 3 to move horizontally. Four through-holes 303 are horizontally formed through the side of the push plate 3, evenly distributed around the threaded groove 301. Four guide posts 6 extend through each of the four through-holes 303, each of which is slidably engaged with the through-holes 303. This arrangement, through the cooperation between the guide posts 6 and the through-holes 303, allows the push plate 3 to be limited and guided, allowing the push plate 3 to move horizontally along the guide posts 6 under the action of the drive screw 5.

[0023] In this embodiment, a circular chamfer is provided on one side edge of the pushing plate 4 near the opening of the fixed cylinder 2. By providing the center chamfer 402, the pushing plate 4 is facilitated to enter the interior of the glass fiber reinforced plastic tube 19; a plurality of driving wheels 20 are provided at the bottom of the base 1, and a traction block 21 is provided at the end of the base 1. A traction ring 22 is installed on the traction block 21. As a preferred embodiment, a driving assembly for driving the driving wheel 20 to move can also be provided on the base 1. The driving assembly is a common technology in the prior art. It is the same as the driving assembly of a vehicle and can drive the entire device to move through the driving wheel 20. Its specific structure and cooperating components will not be explained in detail here. In addition, the traction block 21 and the traction ring 22 can also be used to facilitate the movement of the pulling device by pulling a cart.

[0024] In this embodiment, the air outlet of the cooling fan 13 is connected to a main air duct 14, the ends of which are connected to four branch air ducts 12 via a five-way joint. The outlet ends of the four branch air ducts 12 extend through the sealed end of the fixed tube 2 and are fixedly connected to the ventilation slots 601 within the guide column 6. With this arrangement, the air blown by the cooling fan 13 passes through the main air duct 14 and the branch air ducts 12, respectively, and enters the ventilation slots 601 within the four guide columns 6. It is then blown out through the air holes 602 in the ventilation slots 601, thereby achieving a cooling effect on the fluorine-lined tube.

[0025] In this embodiment, the upper surface of the base 1 is provided with an adjustment slot 25 extending along the length of the base 1. The adjustment slot 25 is provided with a plurality of equally spaced adjustment holes 26. The adjustment slot 25 is provided with a plurality of slidingly engaged load-bearing blocks 24. The load-bearing blocks 24 are provided with fixing holes 2401 that correspond to the adjustment holes 26. The adjustment holes 26 are fixed to the fixing holes 2401 via screws. This arrangement allows the adjustment slot 25 and the load-bearing blocks 24 to cooperate horizontally, thereby facilitating adjustment of the position of the support frame 23. At the same time, screws are sequentially inserted through the adjustment holes 26 and the fixing holes 2401 to achieve a limited position fixation of the load-bearing blocks 24.

[0026] In this embodiment, support column 7 comprises an outer cylinder 701 fixedly connected to the surface of bearing block 24. A vertical inner column 702 is disposed within outer cylinder 701. Inner column 702 is provided with a plurality of equally spaced support holes 703. Screws are provided on outer cylinder 701 to engage with support holes 703. Because inner column 702 can be freely raised and lowered within outer cylinder 701, and the screws engage support holes 703, inner column 702 can be fixed at a predetermined height within outer cylinder 701, thereby enabling support column 7 to be adjusted to a desired height.

[0027] In this embodiment, the end of the driving screw 5 that passes through the fixed cylinder 2 is a smooth surface, and a bearing 27 is provided at the penetration point. By providing the bearing 27, the driving screw 5 can rotate stably within the fixed cylinder 2. The end of the driving screw 5 extending from the fixed cylinder 2 and the output end of the reduction motor 11 are both fixedly mounted with a transmission gear 10, and the two transmission gears 10 are coupled via a transmission chain 8. In this arrangement, through the transmission coordination of the transmission gear 10 and the transmission chain 8, the reduction motor 11 can drive the driving screw 5 to rotate synchronously, and thus can control the driving screw 5 to push the push plate 3 to move. The reduction motor 11 mentioned in this specification is an assembly of the driving motor and the reduction box, the output end of the driving motor is connected to the input end of the reduction box, and the transmission gear 10 is provided at the output end of the reduction box.

[0028] In this embodiment, the connecting member 18 includes a connecting block 1801 fixedly connected to the opening of the fixed cylinder 2. The connecting block 1801 has at least four pieces and is evenly welded at the opening of the fixed cylinder 2. The outer side of the connecting block 1801 is welded with a connecting plate 1802. The connecting plate 1802 is welded to one end of the glass fiber reinforced plastic tube 19 through a connecting column 1803 to weld a limited block 1805. The connecting column 1803 is covered with a rotatable rotating block 1804. The rotating block 1804 is connected to the edge of the glass fiber reinforced plastic tube 19. Correspondingly, the arrangement is such that after aligning the FRP tube 19 with the opening of the fixed tube 2, the rotating block 1804 is rotated so that the rotating block 1804 rests against the rear side of the edge of the FRP tube 19, so that the FRP tube 19 and the fixed tube 2 are tightly docked together. At the same time, when the push plate 4 and the liner tube are pushed into the FRP tube 19, the FRP tube 19 is subjected to thrust, and the rotating block 1804 can overcome the thrust, preventing the FRP tube 19 from detaching from the fixed tube 2, so that the liner tube can be smoothly pushed into the interior of the FRP tube 19.

[0029] Working principle: During specific use, the reduction motor 11 drives the reverse rotation of the driving screw 5 through the cooperation of the transmission chain 8 and the transmission gear 10, and the threaded cooperation between the driving screw 5 and the central thread groove 301 of the push plate 3 is used to move the push plate 3 to the inner end of the fixed cylinder 2, and the liner is inserted into the fixed cylinder 2 from the opening of the fixed cylinder 2, and the liner is completely within the heating range of the heating component 9. The push plate 4 is placed in the fixed cylinder 2, and the support rod 16 on the push plate 3 passes through the guide groove 401, and multiple hydraulic cylinders 17 are started at the same time. Under the cooperation of the T-shaped slide groove 302 and the T-shaped slider 1601, the hydraulic cylinder 17 extends and pushes the support rod 16 through the arc piece 1701. Move until the support piece 1603 on the support rod 16 is tightly fitted with the inner wall of the liner to prevent the liner from deforming after heating, and hoist the glass fiber reinforced plastic pipe 19 onto the support frame 23 on the top of the support column 7 (the height of the support frame 23 will be adjusted by the support column 7 when the device is used for the first time, until the glass fiber reinforced plastic pipe 19 of this specification is placed on the support column 7 and the glass fiber reinforced plastic pipe 19 is coaxial with the fixed tube 2), and align the glass fiber reinforced plastic pipe 19 with the fixed tube 2, rotate the rotating block 1804, so that the rotating block 1804 is stuck at the edge position of the glass fiber reinforced plastic pipe 19, and the glass fiber reinforced plastic pipe 19 and the fixed tube 2 are firmly combined together by the rotating block 1804; The electric heating tube 902 is started. The heat from the electric heating tube 902 heats the liner through the heat conducting plate 901, causing the entire liner to heat up rapidly until the liner expands and softens, and the outer diameter of the liner temporarily increases by 1-2%. The heating of the electric heating tube 902 is then stopped. The cooling fan 13 blows out cold air and cools the liner through the blowing hole 602, causing the liner to cool down rapidly and shrink rapidly to a state slightly larger than the inner diameter of the glass fiber reinforced plastic tube 19 (about 0.5% interference). The cooling is stopped and the reduction motor 11 is started. The reduction motor 11 drives the drive screw 5 to rotate through the transmission chain 8 and the transmission gear 10. The threaded fit between the drive screw 5 and the thread groove 301 is used to enable the push plate 3 to push the heated liner toward The FRP tube 19 is pushed in. During the pushing process, the pushing plate 4 first enters the interior of the FRP tube 19, and the pushing plate 4 is used to remove the debris that accidentally enters the interior of the FRP tube 19 (because the FRP tube 19 has been internally treated in advance, there will be no stubborn stains adhering to the inside, but it is possible that during the pushing process, debris will accidentally float into the FRP tube 19), avoiding the accidental flying debris affecting the processing of the liner. When the liner is pushed to the predetermined position, the reduction motor 11 is turned off, and the pushing of the liner is stopped. The "memory effect" of the liner is used to achieve a close fit with the inner wall of the steel pipe. This principle mainly involves the thermoelastic phase change characteristics of the material and its deformation recovery mechanism, which is a common technology in the prior art and will not be explained in detail here.

[0030] The present invention uses a heating component 9 to quickly heat the liner tube, controls the liner tube at 80-90°C, replaces the traditional warm water immersion method, and softens and expands it, and then uses the refrigeration fan 13 to blow out cold air to rapidly cool the fluorine lining tube, causing the liner tube to shrink rapidly, and finally, through the cooperation of the driving screw 5 and the push plate 3, the liner tube is pushed into the glass fiber reinforced plastic tube 19 to complete the liner tube insertion work. The present invention integrates heating, cooling and pushing into one, and there is no need to soak and flush the liner tube, nor is there any need to frequently transport the liner tube, so that the liner tube can be quickly heated, cooled and pushed in, greatly improving the processing efficiency of the liner tube, while saving a large amount of water and electricity resources, in line with the concept of energy conservation and emission reduction.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A liner inserting device for glass fiber reinforced plastic liner processing, characterized by: The invention comprises a base (1), a horizontally arranged fixed cylinder (2) is fixedly mounted on the base (1) via a supporting leg (15), and the inner diameter of the fixed cylinder (2) is equal to the outer diameter of the liner after expansion by heating, one end of the fixed cylinder (2) is open, and a disc-shaped push plate (3) and a push plate (4) are respectively arranged inside the fixed cylinder (2), the liner is located between the push plate (3) and the push plate (4), and a support rod (15) which can move radially along the push plate (3) is connected between the push plate (3) and the push plate (4). 16) is movably connected, and a limiting plate (1602) is fixedly provided on the side of the support rod (16) close to the push plate (4) toward the push plate (3), a driving screw (5) is horizontally provided in the fixed cylinder (2) and is threadedly matched with the push plate (3), one end of the driving screw (5) passes through the fixed cylinder (2), a reduction motor (11) and a refrigeration fan are installed on the base (1), and the output end of the reduction motor (11) is transmission-connected to the end of the driving screw (5) passing through the fixed cylinder (2); A plurality of guide columns (6) are fixed to the inner end of the fixed cylinder (2) and pass through the push plate (3) horizontally. A ventilation slot (601) is provided in the guide column (6). A plurality of equidistantly arranged air blowing holes (602) are provided on the outer side of the guide column (6). The air outlet of the refrigeration fan is connected to the ventilation slot (601) through the air guide main pipe (14) and the air guide branch pipe (12). A plurality of height-adjustable support columns (7) are slidably mounted on the base (1), and a glass fiber reinforced plastic pipe (19) is fixedly supported on the top of the support column (7) via a semicircular support frame (23). A heating assembly (9) for heating the liner is provided on the fixed cylinder (2), and a connecting piece (18) for connecting to the glass fiber reinforced plastic pipe (19) is provided at the opening of the fixed cylinder (2).

2. The inner liner inserting device for processing a glass fiber reinforced plastic liner according to claim 1, characterized in that: An annular heating notch (201) is provided in the middle of the fixed tube (2), and the length of the heating notch (201) is greater than the length of the liner tube. The heating assembly (9) includes a heat conducting plate (901) welded in the heating notch (201), and the heat conducting plate (901) welds and fixes the fractures of the fixed tube (2) at both ends of the heating notch (201). An electric heating tube (902) wound around the central axis of the fixed tube (2) is provided outside the heat conducting plate (901). A sealing movable cover (904) is provided outside the heating notch (201), and a heat insulating layer (903) is provided inside the movable cover (904).

3. The inner liner inserting device for processing a glass fiber reinforced plastic liner according to claim 1, characterized in that: The push plate (3) is provided with four radially extending T-shaped slots (302) T on one side facing the push plate (4); one end of the support rod (16) is fixedly provided with a T-shaped slider (1601) T that slides with the T-shaped slots (302) T; the push plate (4) is provided with four guide slots (401) corresponding to the T-shaped slots (302) T; the other end of the support rod (16) passes through the guide slots (401); the push plate (3) and the push plate (4) are both fixedly provided with four guide slots (401) corresponding to the guide slots (401) on one side facing the opening of the fixed cylinder (2). A hydraulic cylinder (17) is arranged in the same direction, and the movable end of the hydraulic cylinder (17) is provided with an arc-shaped piece (1701) corresponding to the support rod (16), and the four support rods (16) are provided with a T-shaped installation groove (1604) on the side facing the side wall of the fixed cylinder (2), and the installation groove (1604) horizontally penetrates the end of the support rod (16) away from the T-shaped slider (1601), and an arc-shaped support piece (1603) is slidably installed in the installation groove (1604), and a sliding bar slidably matched with the installation groove (1604) is provided on the inner side of the support piece (1603).

4. The inner liner inserting device for processing a glass fiber reinforced plastic liner according to claim 1, characterized in that: The center of the push plate (3) is provided with a thread groove (301) that is threadably engaged with the driving screw (5), and the side surface of the push plate (3) is provided with four through holes (303) that are horizontally penetrated, and the four through holes (303) are evenly distributed with the thread groove (301) as the center. The guide columns (6) have four and pass through the four through holes (303) respectively, and the guide columns (6) are slidably engaged with the through holes (303).

5. The inner liner inserting device for processing a glass fiber reinforced plastic liner according to claim 1, characterized in that: A circular chamfer is provided on one side edge of the push plate (4) near the opening of the fixed cylinder (2); a plurality of driving wheels (20) are provided at the bottom of the base (1); a traction block (21) is provided at the end of the base (1); and a traction ring (22) is installed on the traction block (21).

6. The inner liner inserting device for processing a glass fiber reinforced plastic liner according to claim 1, characterized in that: The air outlet of the refrigeration fan is connected to an air guide main pipe (14), the ends of the air guide main pipe (14) are connected to four air guide branch pipes (12) via a five-way joint, and the air outlet ends of the four air guide branch pipes (12) respectively pass through the closed end of the fixed cylinder (2) and are connected and fixed to the ventilation slot (601) in the guide column (6).

7. The inner liner inserting device for processing a glass fiber reinforced plastic liner according to claim 1, characterized in that: An upper surface of the base (1) is provided with an adjustment groove (25) extending along the length direction of the base (1), a plurality of adjustment holes (26) arranged at equal intervals are provided in the adjustment groove (25), a plurality of slidingly matched load-bearing blocks (24) are provided in the adjustment groove (25), and the load-bearing blocks (24) are provided with fixing holes (2401) corresponding to the adjustment holes (26), and the adjustment holes (26) and the fixing holes (2401) are fixed by screws.

8. The inner liner inserting device for processing a glass fiber reinforced plastic liner according to claim 7, characterized in that: The support column (7) comprises an outer cylinder (701) fixedly connected to the surface of the load-bearing block (24); a vertical inner column (702) is provided in the outer cylinder (701); a plurality of support holes (703) arranged at equal intervals are provided on the inner column (702); and screws are provided on the outer cylinder (701) to engage with the support holes (703).

9. The inner liner inserting device for processing a glass fiber reinforced plastic liner according to claim 1, characterized in that: One end of the driving screw (5) passing through the fixed cylinder (2) is a smooth surface, and a bearing (27) is provided at the penetration point. The end of the driving screw (5) extending out of the fixed cylinder (2) and the output end of the reduction motor (11) are both fixedly mounted with a transmission gear (10), and the two transmission gears (10) are coupled to each other through a transmission chain (8).

10. The inner liner inserting device for processing a glass fiber reinforced plastic liner according to claim 1, characterized in that: The connecting member (18) comprises a connecting block (1801) fixedly connected to the opening of the fixed cylinder (2), a connecting plate (1802) being welded to the outside of the connecting block (1801), a limiting block (1805) being welded to one end of the connecting plate (1802) toward the glass fiber reinforced plastic tube (19) through a connecting column (1803), and a rotatable rotating block (1804) being provided on the outer shell of the connecting column (1803).

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