PTFE tube lining pushing device

Abstract

This disclosure provides a PTFE pipe lining pushing device, including: a support frame, which includes a horizontal frame, a vertical frame, and a steel pipe limiting component. The end of the steel pipe is clamped in the limiting plate, and the flange abuts against the limiting plate. A support component supports the other end of the steel pipe to keep the steel pipe horizontal. The PTFE lining is placed between the horizontal pressing component and the steel pipe limiting component. One end of the PTFE lining is supported by a traction belt, and the other end is supported by two positioning structures. Beforehand, the height of the two first support wheels and the length of the traction belt between the two arc plates are adjusted to ensure that the axis of the PTFE lining coincides with the axis of the steel pipe. The power system is started so that the horizontal pressing component pushes the lining into the steel pipe, thereby realizing the lining installation operation of large PTFE pipes.

Description

Technical Field

[0001] This manual relates to the field of PTFE pipe production technology, and in particular to a PTFE pipe lining pushing device. Background Technology

[0002] PTFE (polytetrafluoroethylene) lined pipes are widely used in anti-corrosion piping systems in chemical, pharmaceutical, and environmental protection fields due to their excellent corrosion resistance, low coefficient of friction, and good temperature resistance. In practical applications, the PTFE lining is often pressed into the inside of the steel pipe to form a composite pipe structure, thus balancing the mechanical strength of the steel pipe with the corrosion resistance of PTFE.

[0003] Currently, the installation of large PTFE lined pipes mostly adopts the pushing method using a traction machine or forklift. For pipes with long lengths and large diameters, the traditional method has the following problems: First, it is difficult to align the steel pipe and the lining, which can easily lead to the lining becoming misaligned or damaged during the pushing process; second, the equipment has poor adaptability to pipes of different specifications, and the adjustment process is cumbersome; third, the lining lacks effective guidance and positioning during the pushing process, affecting the installation quality and efficiency. Summary of the Invention

[0004] This specification provides one or more embodiments of a PTFE pipe lining pushing device, comprising: The support includes a horizontal frame, an upright frame, and a steel pipe limiting component. The upright frame and the steel pipe limiting component are vertically arranged on the horizontal frame. Multiple guide rods are fixed between the upright frame and the steel pipe limiting component. The steel pipe limiting component is used to restrict the end of the steel pipe, thereby restricting the free movement of the steel pipe. The pressing assembly is slidably mounted on the guide rod and located between the upright and the steel pipe limiting component. The pressing assembly includes a horizontal pressing component and an inner lining positioning component. The inner lining positioning component is detachably mounted on the guide rod and is used to receive one end of the PTFE inner lining. The horizontal pressing component is driven by a power system to move horizontally along the guide rod and fix the other end of the PTFE inner lining, thereby realizing the horizontal movement of the PTFE inner lining and pressing it into the steel pipe. A support component is disposed on one side of the bracket and is used to support the steel pipe. The support height of the support component is adjustable, thereby achieving accurate alignment between the steel pipe and the pushing component.

[0005] In some embodiments, the steel pipe limiting component includes a vertical plate, a mounting plate, and a limiting plate. The vertical plate has a first mounting groove that is recessed downward in a "U" shape. The mounting plate is detachably connected to the first mounting groove. At least one limiting plate is configured and detachably mounted on the mounting plate. Both the limiting plate and the mounting plate are "U" shaped, and the opening of the limiting plate is smaller than the opening of the mounting plate.

[0006] In some embodiments, the inner wall of the first mounting groove is provided with a fitting groove with an upper opening. The outer periphery of the mounting plate can be embedded into the fitting groove along the upper opening of the fitting groove. Both ends of the mounting plate are fixed with hanging ears. The part of the mounting plate protruding from the fitting groove is provided with two vertically arranged second mounting grooves with upper openings. The limiting plate is provided with mounting strips corresponding to the second mounting grooves. The mounting strips can be embedded into the second mounting grooves to fix the limiting plate and the mounting plate, and the body of the steel pipe is inserted.

[0007] In some embodiments, the horizontal pressing component includes a push plate and two symmetrically arranged positioning structures thereon. The side of the push plate near the steel pipe limiting component has two symmetrically arranged guide grooves. The two guide grooves are in the shape of an "eight". The two positioning structures are respectively arranged on the two guide grooves and can slide along them, thereby realizing the support and positioning of the ends of steel pipes of different diameters.

[0008] In some embodiments, a through groove is formed on the bottom wall of the guide groove along the sliding direction of the positioning structure. The through groove passes through the push plate in the horizontal direction. The positioning structure includes a guide plate, a wheel axle, a first support wheel, and a nut. The guide plate is slidably connected in the guide groove. The wheel axle passes through the guide plate in the horizontal direction and is fixedly connected to it. The wheel axle passes through the through groove and can slide in it. The first support wheel is rotatably connected to one end of the wheel axle and is located in front of the guide groove. The nut is threadedly connected to the other end of the wheel axle and is located in rear of the through groove. By tightening the nut, the positioning structure is fixed to the push plate.

[0009] In some embodiments, the horizontal pressing component further includes an adjusting plate and a pressure plate. The adjusting plate is horizontally arranged and has two horizontally penetrating guide slots. The two wheel axles pass through the two guide slots respectively and can slide horizontally along the guide slots. The vertical movement of the adjusting plate can enable the two wheel axles to move simultaneously and ensure that the two wheel axles are at the same height. A pressure plate is provided between the nut and the adjusting plate. The diameter of the pressure plate is larger than the width of the guide slot in the vertical direction. Tightening the nut can cause the pressure plate and the adjusting plate to cooperate with the guide plate to clamp the push plate.

[0010] In some embodiments, the adjusting plate has vertically penetrating grooves at both ends, and the push plate has two vertically arranged guide strips corresponding to the grooves on the side near the adjusting plate. The guide strips are embedded in the grooves and can be slidably connected to them, thereby ensuring that the adjusting plate moves vertically.

[0011] In some embodiments, the power system includes a hydraulic cylinder fixed to a horizontal frame and perpendicular to the vertical frame. The piston rod of the hydraulic cylinder extends horizontally through the vertical frame and is fixedly connected to a push plate. The piston rod of the hydraulic cylinder extends and retracts in the horizontal direction by hydraulic drive.

[0012] In some embodiments, the lining positioning component includes a connecting plate, a traction belt, and a moving mechanism. Two moving mechanisms are provided and are detachably mounted on two guide rods and can slide along their outer periphery. The two moving mechanisms are fixedly connected by the connecting plate. The two ends of the traction belt are respectively connected to the two moving mechanisms, and the traction belt is used to support the end of the steel pipe.

[0013] In some embodiments, the moving mechanism includes an arc plate, an arc seat, and a waist wheel. The arc plate is semi-arc-shaped. There are two arc seats, which are respectively fixed to both ends of the arc plate along its axis. Multiple evenly distributed wheel seats are fixed on the inner wall of the arc seat. A waist wheel is rotatably connected between adjacent wheel seats. The multiple waist wheels can simultaneously abut against the guide rod. Both of the two arc-shaped plates have slots on their adjacent edges. A fixing rod is fixed in the slot, and the end of the traction belt is wrapped around the fixing rod and fixed by a fastener.

[0014] Beneficial effects: The end of the steel pipe is clamped in the limiting plate, the flange abuts against the limiting plate, and the supporting component supports the other end of the steel pipe, keeping the steel pipe horizontal. The PTFE liner is placed between the horizontal pressure component and the steel pipe limiting component. One end of the PTFE liner is supported by the traction belt, and the other end is supported by two positioning structures. Before this, the height of the two first support wheels and the length of the traction belt between the two arc plates are adjusted in advance to ensure that the axis of the PTFE liner coincides with the axis of the steel pipe. The power system is started, so that the horizontal pressure component pushes the liner into the steel pipe, thereby realizing the liner installation operation of large PTFE pipes. Attached Figure Description

[0015] This specification will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. The same numbers in the drawings denote the same structures or steps.

[0016] Figure 1 This is a structural schematic diagram of a PTFE pipe lining pushing device according to some embodiments of this specification.

[0017] Figure 2 This is a structural schematic diagram of a transverse pressing component in a PTFE pipe lining pressing device, as shown in some embodiments of this specification.

[0018] Figure 3 This is a schematic diagram of the structure of an adjusting plate in a PTFE pipe lining pressing device according to some embodiments of this specification.

[0019] Figure 4 This is based on some embodiments shown in this specification. Figure 3 A partial sectional view along the AA direction.

[0020] Figure 5 This is a structural schematic diagram of the lining positioning component in a PTFE pipe lining pushing device according to some embodiments of this specification.

[0021] Figure 6 This is a cross-sectional view of the lining positioning component in a PTFE pipe lining pushing device according to some embodiments of this specification.

[0022] Figure 7 This is based on some embodiments shown in this specification. Figure 6 Enlarged diagram of point B in the middle.

[0023] Figure 8 This is a structural schematic diagram of a steel pipe limiting component in a PTFE pipe lining pushing device, as shown in some embodiments of this specification.

[0024] Figure 9 This is based on some embodiments shown in this specification. Figure 8 Enlarged diagram of point C in the middle.

[0025] Figure 10 This is based on some embodiments shown in this specification. Figure 8 Enlarged diagram of point D in the middle.

[0026] Figure 11 This is a schematic diagram of the structure of a support component in a PTFE pipe lining pushing device according to some embodiments of this specification.

[0027] In the picture: 1. Power system; 2. Horizontal pressure component; 3. Inner lining positioning component; 4. Steel pipe limiting component; 5. Support assembly; 20. Push plate; 21. Guide groove; 22. First support wheel; 23. Wheel axle; 24. Guide plate; 26. Through groove; 27. Guide groove; 28. Adjusting plate; 29. ​​Nut; 210. Guide bar; 211. Pressure plate; 30. Connecting plate; 31. Arc plate; 32. Waist wheel; 33. Traction belt; 34. Arc seat; 35. 36. Wheel seat; 37. Empty slot; 38. Fixing rod; 49. Fastener; 40. Vertical plate; 41. First mounting slot; 42. Fitting slot; 43. Mounting plate; 44. Limiting plate; 45. Mounting strip; 46. Second mounting slot; 47. Hanging lug; 50. Base plate; 51. Slider; 52. Support rod; 53. Second support wheel; 54. Hinge seat; 55. Screw; 60. Horizontal frame; 61. Vertical frame; 62. Guide rod; 70. Hydraulic cylinder. Detailed Implementation

[0028] To more clearly illustrate the technical solutions of the embodiments in this specification, the embodiments will be described in detail below with reference to the accompanying drawings. Obviously, the content described below are some examples or embodiments of this specification. For those skilled in the art, without creative effort, the technical solutions or means disclosed in this specification can be applied to other scenarios based on this technical content.

[0029] It should be understood that the terms "system," "device," "unit," and / or "module" used in this specification are a method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0030] Unless otherwise specified, the technical terms used to describe components, elements, etc. in this specification are not singular but may include plural. Generally speaking, terms such as "comprising" or "including" only indicate that explicitly identified steps, elements, or components are included, and these steps, elements, and components do not constitute an exclusive list, as the described method or apparatus may also include other steps or components.

[0031] This specification uses flowcharts to illustrate the operational steps performed by the apparatus or system of related embodiments. However, unless otherwise specified, the order in which these steps are described should not be construed as a limitation on the order of execution. Those skilled in the art can adjust the order of these steps based on the knowledge and information conveyed by the embodiments in this specification. Such adjustments include, but are not limited to, reversing the order of steps, merging multiple steps, and splitting a step.

[0032] PTFE (polytetrafluoroethylene) lined pipes are widely used in anti-corrosion piping systems in chemical, pharmaceutical, and environmental protection fields due to their excellent corrosion resistance, low coefficient of friction, and good temperature resistance. In practical applications, the PTFE lining is often pressed into the inside of the steel pipe to form a composite pipe structure, thus balancing the mechanical strength of the steel pipe with the corrosion resistance of PTFE.

[0033] Currently, the installation of large PTFE lined pipes mostly adopts the pushing method using a traction machine or forklift. For pipes with long lengths and large diameters, the traditional method has the following problems: First, it is difficult to align the steel pipe and the lining, which can easily lead to the lining becoming misaligned or damaged during the pushing process; second, the equipment has poor adaptability to pipes of different specifications, and the adjustment process is cumbersome; third, the lining lacks effective guidance and positioning during the pushing process, affecting the installation quality and efficiency.

[0034] Therefore, some embodiments of this specification propose a PTFE pipe liner pressing device, including a support frame, which includes a horizontal frame 60, a vertical frame 61, and a steel pipe limiting component 4. The vertical frame 61 and the steel pipe limiting component 4 are vertically arranged on the horizontal frame 60. Multiple guide rods 62 are fixed between the vertical frame 61 and the steel pipe limiting component 4. The steel pipe limiting component 4 is used to restrict the end of the steel pipe, thereby restricting the free movement of the steel pipe. A pressing assembly is slidably connected to the part of the guide rod 62 between the vertical frame 61 and the steel pipe limiting component 4. The pressing assembly includes a horizontal pressing component 2 and an inner liner positioning component 3. The inner liner positioning component 3 is detachably arranged on the guide rod 62 and is used to support one end of the PTFE inner liner. The horizontal pressing component 2 is driven by a power system 1 to move horizontally along the guide rod 62 and fix the other end of the PTFE inner liner, thereby realizing the horizontal movement of the PTFE inner liner and pressing it into the steel pipe. A support frame is provided on one side. A support assembly 5 is provided to support the steel pipe. The support height of the support assembly 5 is adjustable to accurately align the steel pipe with the pushing assembly. The support assembly 5 includes a base plate 50, a hinge seat 54, a support rod 52, and a second support wheel 53. The upper surface of the base plate 50 has a downwardly recessed groove. Two hinge seats 54 are symmetrically arranged. The lower surface of the hinge seat 54 has a downwardly protruding slider 51. The slider 51 is slidably connected in the groove. Two support rods 52 are provided, and their lower ends are rotatably connected to the two hinge seats 54 respectively. The two support rods 52 are arranged crosswise and rotatably connected to each other. The connection position is located at the intersection of the two support rods 52. Two second support wheels 53 are provided and rotatably connected to the upper ends of the two support rods 52 respectively. A screw 55 is provided in the groove. The screw 55 passes through the two sliders 51 and its two ends are rotatably connected to the two side walls of the groove respectively. The screw 55 is threadedly connected to the sliders 51.

[0035] Specifically, the steel pipe limiting component 4 includes a vertical plate 40, a mounting plate 43, and a limiting plate 44. The vertical plate 40 has a first mounting groove 41 that is recessed downward in a "U" shape. The mounting plate 43 is detachably connected to the first mounting groove 41. The limiting plate 44 is configured as at least one and is detachably mounted on the mounting plate 43. Both the limiting plate 44 and the mounting plate 43 are "U" shaped. The opening of the limiting plate 44 is smaller than the opening of the mounting plate 43.

[0036] Specifically, the inner wall of the first mounting groove 41 is provided with a fitting groove 42 with an upper opening. The outer periphery of the mounting plate 43 can be inserted into the fitting groove 42 along the upper opening of the fitting groove 42. Both ends of the mounting plate 43 are fixed with hanging ears 47. The part of the mounting plate 43 protruding from the fitting groove 42 is provided with two vertically arranged second mounting grooves 46. The upper end of the second mounting groove 46 is open. The limiting plate 44 is provided with a mounting strip 45 corresponding to the second mounting groove 46. The mounting strip 45 can be inserted into the second mounting groove 46, thereby fixing the limiting plate 44 and the mounting plate 43. The body of the steel pipe is inserted. Multiple limit plates 44 are provided, and the size of the multiple limit plates 44 can be set according to the actual size of the steel pipe. Different sizes of limit plates 44 can be used to limit steel pipes of different diameters.

[0037] Specifically, the horizontal pressing component 2 includes a push plate 20 and two symmetrically arranged positioning structures on it. The side of the push plate 20 near the steel pipe limiting component 4 has two symmetrically arranged guide grooves 21. The two guide grooves 21 are in the shape of an "eight". The two positioning structures are respectively arranged on the two guide grooves 21 and can slide along them, thereby realizing the support and positioning of the ends of steel pipes of different diameters.

[0038] Specifically, a through groove 26 is provided on the bottom wall of the guide groove 21 along the sliding direction of the positioning structure. The through groove 26 passes through the push plate 20 in the horizontal direction. The positioning structure includes a guide plate 24, a wheel axle 23, a first support wheel 22, and a nut 29. The guide plate 24 is slidably connected in the guide groove 21. The wheel axle 23 passes through the guide plate 24 in the horizontal direction and is fixedly connected to it. The wheel axle 23 passes through the through groove 26 and can slide in it. The first support wheel 22 is rotatably connected to one end of the wheel axle 23 and is located on the front side of the guide groove 21. The nut 29 is threadedly connected to the other end of the wheel axle 23 and is located on the rear side of the through groove 26. By tightening the nut 29, the positioning structure is fixed on the push plate 20.

[0039] Specifically, the horizontal pressing component 2 also includes an adjusting plate 28 and a pressure plate 211. The adjusting plate 28 is horizontally set and has two horizontally through grooves 27. Two axles 23 pass through the two grooves 27 respectively and can slide horizontally along the grooves 27. The vertical movement of the adjusting plate 28 can realize the simultaneous movement of the two axles 23 and ensure that the height of the two axles 23 is consistent. A pressure plate 211 is set between the nut 29 and the adjusting plate 28. The diameter of the pressure plate 211 is larger than the width of the grooves 27 in the vertical direction. Tightening the nut 29 can make the pressure plate 211 and the adjusting plate 28 cooperate with the guide plate 24 to clamp the push plate 20.

[0040] Specifically, the adjusting plate 28 has vertically penetrating grooves at both ends, and the push plate 20 has two vertically arranged guide strips 210 on the side close to the adjusting plate 28 that correspond to the grooves. The guide strips 210 are embedded in the grooves and can be slidably connected to them, thereby ensuring that the adjusting plate 28 moves vertically.

[0041] Specifically, the power system 1 includes a hydraulic cylinder 70, which is fixed on the horizontal frame 60 and vertically fixed to the vertical frame 61. The piston rod of the hydraulic cylinder 70 passes horizontally through the vertical frame 61 and is fixedly connected to the push plate 20. The piston rod of the hydraulic cylinder 70 extends and retracts in the horizontal direction by hydraulic drive. The power system 1 also includes an oil pump, hydraulic oil pipes, and control elements. The oil pump is connected to the hydraulic cylinder 70 through the hydraulic oil pipes, and the control elements control the start of the oil pump, thereby driving the hydraulic cylinder 70 to extend and retract.

[0042] Specifically, the inner lining positioning component 3 includes a connecting plate 30, a traction belt 33, and a moving mechanism. There are two moving mechanisms, which are detachably installed on two guide rods 62 and can slide along their outer periphery. The two moving mechanisms are fixedly connected by the connecting plate 30. The two ends of the traction belt 33 are fixedly connected to the two moving mechanisms respectively. The traction belt 33 is used to support the end of the steel pipe.

[0043] Specifically, the moving mechanism includes an arc plate 31, an arc seat 34, and a waist wheel 32. The arc plate 31 is semi-arc-shaped. There are two arc seats 34, which are respectively fixed to both ends of the arc plate 31 along its axis. Multiple evenly distributed wheel seats 35 are fixed on the inner wall of the arc seat 34. The waist wheel 32 is rotatably connected between adjacent wheel seats 35. The multiple waist wheels 32 can simultaneously abut against the guide rod 62. It should be noted that, in order to ensure that the moving mechanisms on both sides are at the same height, four guide rods 62 are provided in this embodiment, and they are located at the four corners of the upright 61 respectively. The two uppermost guide rods 62 are at the same height and are set horizontally.

[0044] Both of the two arc-shaped plates 31 have slots 36 on their sides that are close to each other. A fixing rod 37 is fixed in the slot 36. The end of the traction belt 33 is wrapped around the fixing rod 37 and clamped and fixed by a fastener 38.

[0045] In use, the present invention selects a limiting plate 44 that matches the diameter of the steel pipe. The limiting plate 44 is inserted into the second mounting groove 46 by the mounting strip 45, thereby fixing the limiting plate 44 and the mounting plate 43.

[0046] Rotating the screw 55 causes the two sliders 51 to move closer or further apart, which in turn causes the two cross-shaped support rods 52 to rotate, thereby adjusting the height of the two second support wheels 53 to match the size of the corresponding limit plate 44.

[0047] The large steel pipe is placed on the limiting plate 44 and two second support wheels 53 using a gantry frame. The flange on the steel pipe abuts against the limiting plate 44, and the steel pipe is in a horizontal state.

[0048] The PTFE liner is hoisted between the horizontal pressure component 2 and the steel pipe limiting component 4 using a gantry crane. After aligning the PTFE liner with the steel pipe, the nut 29 is loosened and the adjusting plate 28 is moved upward, so that the wheel axles 23 on both sides move upward and inward along the through groove 26 until the wheel axles 23 on both sides simultaneously abut against the outer periphery of the end of the PTFE liner.

[0049] Meanwhile, the inner lining positioning component 3 is placed on the other end of the PTFE inner lining. After unfastening one side of the fastener 38, the traction belt 33 is tightened until it abuts against the outer periphery of the PTFE inner lining. Then the fastener 38 is fastened so that the end of the traction belt 33 is kept wrapped and fixed on the fixing rod 37.

[0050] At this time, the control element in the power system 1 is activated, causing the piston rod of the hydraulic cylinder 70 to extend, thereby pushing the push plate 20 to move towards the side closer to the steel pipe. This causes the PTFE liner and the liner positioning component 3 to move together towards the side closer to the steel pipe. The waist wheel 32 in the liner positioning component 3 slides along the guide rod 62 and rolls along the guide rod 62.

[0051] The PTFE liner end is pressed downward into the steel pipe by the push plate 20. At this time, the control element temporarily stops the extension of the hydraulic cylinder 70. After the fastener 38 in one end of the traction belt 33 on the liner positioning component 3 is removed, the corresponding traction belt 33 is separated from the fixing rod 37, so as to facilitate the separation of the liner positioning component 3 from the guide rod 62.

[0052] If the control element re-drives the extension of the hydraulic cylinder 70, the pusher plate 20 continues to push the PTFE liner until it is fully pressed into the steel pipe.

[0053] The beneficial effects that the embodiments of this specification may bring include, but are not limited to: the end of the steel pipe is clamped within the limiting plate 44, the flange abuts against the limiting plate 44, the supporting assembly supports the other end of the steel pipe to keep the steel pipe horizontal, the PTFE liner is placed between the horizontal pressure component and the steel pipe limiting component 4, one end of the PTFE liner is supported by the traction belt 33, and the other end is supported by two positioning structures. Prior to this, the height of the two first support wheels 22 and the length of the traction belt 33 between the two arc-shaped plates 31 are adjusted to ensure that the axis of the PTFE liner coincides with the axis of the steel pipe. The power system is started, causing the horizontal pressure component to push the liner into the steel pipe, thereby realizing the liner installation operation of a large PTFE pipe. It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects may be any one or a combination of the above, or any other possible beneficial effects.

[0054] The basic concepts have been described above. It is obvious that the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, various modifications, improvements, and corrections may be made to this specification by those skilled in the art. Such modifications, improvements, and corrections are taught in this specification and therefore remain within the spirit and scope of the exemplary embodiments described herein.

Claims

1. A PTFE pipe lining pressing device, characterized in that, include: The support includes a horizontal frame (60), a vertical frame (61), and a steel pipe limiting component (4). The vertical frame (61) and the steel pipe limiting component (4) are vertically arranged on the horizontal frame (60). Multiple guide rods (62) are fixed between the vertical frame (61) and the steel pipe limiting component (4). The steel pipe limiting component (4) is used to limit the end of the steel pipe, thereby limiting the free movement of the steel pipe. The pressing assembly is slidably disposed on the guide rod (62) and located between the upright (61) and the steel pipe limiting component (4). The pressing assembly includes a horizontal pressing component (2) and an inner lining positioning component (3). The inner lining positioning component (3) is detachably disposed on the guide rod (62). The inner lining positioning component (3) is used to support one end of the PTFE inner lining. The horizontal pressing component (2) is driven by the power system (1) to move horizontally along the guide rod (62) and fix the other end of the PTFE inner lining, thereby realizing the horizontal movement of the PTFE inner lining and pressing it into the steel pipe. The support component (5) is located on one side of the bracket and is used to support the steel pipe. The support height of the support component (5) is adjustable so as to accurately align the steel pipe with the pushing component.

2. The PTFE pipe lining pushing device according to claim 1, characterized in that, The steel pipe limiting component (4) includes a vertical plate (40), a mounting plate (43) and a limiting plate (44). The vertical plate (40) has a first mounting groove (41) that is recessed downward in a "U" shape. The mounting plate (43) is detachably connected to the first mounting groove (41). The limiting plate (44) is configured as at least one and is detachably mounted on the mounting plate (43). Both the limiting plate (44) and the mounting plate (43) are "U" shaped. The opening of the limiting plate (44) is smaller than the opening of the mounting plate (43).

3. The PTFE pipe lining pushing device according to claim 2, characterized in that, The first mounting groove (41) has an opening at the top of the inner wall of the fitting groove (42). The outer periphery of the mounting plate (43) can be embedded into the fitting groove (42) along the opening at the top of the fitting groove (42). Both ends of the mounting plate (43) are fixed with hanging ears (47). The part of the mounting plate (43) that protrudes from the fitting groove (42) has two vertically arranged second mounting grooves (46). The second mounting grooves (46) have an opening at the top. The limiting plate (44) is provided with a mounting strip (45) corresponding to the second mounting groove (46). The mounting strip (45) can be embedded into the second mounting groove (46) to fix the limiting plate (44) and the mounting plate (43).

4. The PTFE pipe lining pushing device according to claim 1, characterized in that, The horizontal pressing component (2) includes a push plate (20) and two symmetrically arranged positioning structures on it. The push plate (20) has two symmetrically arranged guide grooves (21) on the side near the steel pipe limiting component (4). The two guide grooves (21) are in the shape of an "eight". The two positioning structures are respectively arranged on the two guide grooves (21) and can slide along them, so as to support and position the ends of steel pipes of different diameters.

5. The PTFE pipe lining pushing device according to claim 4, characterized in that, The bottom wall of the guide groove (21) is provided with a through groove (26) arranged along the sliding direction of the positioning structure. The through groove (26) passes through the push plate (20) in the horizontal direction. The positioning structure includes a guide plate (24), a wheel axle (23), a first support wheel (22) and a nut (29). The guide plate (24) is slidably connected in the guide groove (21). The wheel axle (23) passes through the guide plate (24) in the horizontal direction and is fixedly connected to it. The wheel axle (23) passes through the through groove (26) and can slide in it. The first support wheel (22) is rotatably connected to one end of the wheel axle (23) and is located in front of the guide groove (21). The nut (29) is threadedly connected to the other end of the wheel axle (23) and is located in the back of the through groove (26). By tightening the nut (29), the positioning structure is fixed on the push plate (20).

6. The PTFE pipe lining pressing device according to claim 5, characterized in that, The horizontal pressing component (2) also includes an adjusting plate (28) and a pressure plate (211). The adjusting plate (28) is horizontally arranged and has two horizontally penetrating guide grooves (27). The two axles (23) pass through the two guide grooves (27) respectively and can slide horizontally along the guide grooves (27). The two axles (23) can move simultaneously by the vertical movement of the adjusting plate (28) and ensure that the two axles (23) are at the same height. A pressure plate (211) is provided between the nut (29) and the adjusting plate (28). The diameter of the pressure plate (211) is greater than the width of the guide groove (27) in the vertical direction. Tightening the nut (29) can make the pressure plate (211) and the adjusting plate (28) cooperate with the guide plate (24) to clamp the push plate (20).

7. The PTFE pipe lining pressing device according to claim 6, characterized in that, The adjusting plate (28) has vertically penetrating grooves at both ends. The push plate (20) has two vertically arranged guide strips (210) on the side close to the adjusting plate (28) that correspond to the grooves. The guide strips (210) are embedded in the grooves and can be slidably connected to them, thereby ensuring that the adjusting plate (28) moves vertically.

8. The PTFE pipe lining pressing device according to claim 4, characterized in that, The power system (1) includes a hydraulic cylinder (70), which is fixed on a horizontal frame (60) and vertically fixed to a vertical frame (61). The piston rod of the hydraulic cylinder (70) passes horizontally through the vertical frame (61) and is fixedly connected to a push plate (20). The piston rod of the hydraulic cylinder (70) extends and retracts in the horizontal direction by hydraulic drive.

9. The PTFE pipe lining pushing device according to claim 1, characterized in that, The inner lining positioning component (3) includes a connecting plate (30), a traction belt (33), and a moving mechanism. There are two moving mechanisms, which are detachably installed on two guide rods (62) and can slide along their outer periphery. The two moving mechanisms are fixedly connected by the connecting plate (30). The two ends of the traction belt (33) are connected to the two moving mechanisms respectively. The traction belt (33) is used to support the end of the steel pipe.

10. The PTFE pipe lining pushing device according to claim 9, characterized in that, The moving mechanism includes an arc plate (31), an arc seat (34), and a waist wheel (32). The arc plate (31) is semi-arc. There are two arc seats (34) and they are fixed at both ends of the arc plate (31) along its axis. Multiple evenly distributed wheel seats (35) are fixed on the inner wall of the arc seat (34). A waist wheel (32) is rotatably connected between adjacent wheel seats (35). Multiple waist wheels (32) can simultaneously abut against the guide rod (62). A slot (36) is opened on the edge of the two arc plates (31) that are close to each other. A fixing rod (37) is fixed in the slot (36). The end of the traction belt (33) is wrapped around the fixing rod (37) and clamped and fixed by a fastener (38).

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