High-pressure shaping device for polytetrafluoroethylene lining pipe

Abstract

The invention is suitable for the technical field of electronic information, and provides a polytetrafluoroethylene lining pipe high-pressure shaping device which comprises a bottom barrel, a directional lifting mechanism arranged on the outer side of the bottom barrel, an elastic ejection mechanism arranged at the bottom of the bottom barrel and used for ejecting out a lining pipe after the lining pipe is formed, and a dust overflow prevention mechanism connected with a positioning column in a sliding mode. The air guide mechanism is connected with the middle plate through a vertical cylinder, after the lining pipe is formed through the exhaust fan, redundant powder is guided into the dust removal box, the atomization system is matched with the air guide mechanism and used for enabling the powder to sink, and the dust collection anti-blocking mechanism is matched with the atomization system so that system dust can be conveniently collected, and meanwhile a conical cylinder in the atomization system can be prevented from being blocked; the device can automatically eject out the lining pipe after the lining pipe is formed, manual taking is not needed, dust can be prevented from escaping outwards during high-pressure shaping, the device has the advantages of being thorough in collection and high in utilization rate, the dust cannot be filled in the dust removal box during dust collection, and collection is extremely convenient and fast.

Description

Technical Field

[0001] The invention belongs to the field of electronic information technology, and in particular relates to a high-pressure shaping device for a polytetrafluoroethylene lined pipe. Background Art

[0002] Polytetrafluoroethylene is mostly used to manufacture polytetrafluoroethylene lined anti-corrosion pipes, which are used in important industrial production sectors such as chemical, petrochemical, metallurgy, nuclear energy and military industry to transport corrosive liquid media. Currently, in the preparation of polytetrafluoroethylene straight pipe linings, powder filling and then pressurization are often used for molding.

[0003] The currently used forming device sucks dust-containing air through a vacuum cleaner and filters it through multiple groups of filter cartridges. However, during use, the position of the vacuum cleaner is relatively fixed, resulting in a small adsorption area and easy omission, which leads to a low dust collection rate. At the same time, dust fills the air collecting chamber, making it inconvenient for subsequent collection. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a high-pressure shaping device for a polytetrafluoroethylene lined pipe, aiming to solve the problems existing in the above-mentioned background technology.

[0005] The embodiment of the present invention is implemented as follows: a high-pressure shaping device for a polytetrafluoroethylene lined pipe includes a bottom barrel and further includes:

[0006] A directional lifting mechanism, which is arranged outside the bottom barrel and driven by an external motor to push the shaping cylinder to adjust its position in the bottom barrel;

[0007] An elastic ejection mechanism, which is arranged at the bottom of the bottom barrel and is used to eject the liner tube after it is formed;

[0008] An anti-dust overflow mechanism, which is installed on the top of the bottom barrel and is slidably connected to a positioning column in the directional lifting mechanism to prevent dust from overflowing outwards;

[0009] An air guide mechanism, which is arranged in the dust removal box in the directional lifting mechanism, is connected to the middle plate in the dust overflow prevention mechanism through a vertical cylinder, and an exhaust fan is arranged inside the middle plate, so that after the inner liner tube is formed, the excess powder can be introduced into the dust removal box through the vertical cylinder;

[0010] Atomization system, which is installed in the dust removal box and cooperates with the air guide mechanism to make the powder sink;

[0011] The dust collecting and anti-blocking mechanism is arranged on the dust removal box and cooperates with the atomization system to collect the system dust and prevent the cone in the atomization system from being blocked.

[0012] Preferably, the directional lifting mechanism comprises a fixing rod, a top plate, a driving screw, a positioning column, a dust removal box and a guide rod;

[0013] The fixing rods are fixedly mounted on both sides of the bottom barrel, a top plate is arranged on the top of the fixing rods, and a positioning column slidably connected to the top plate is mounted on the fixing rods;

[0014] A dust removal box is installed at the bottom of the top plate, and guide rods are symmetrically installed at the bottom ends of the guide rods, and the guide rods are fixedly connected to the base;

[0015] A driving screw for driving the top plate to move is installed on the fixing rod, and the driving screw is connected to the shaft end of the external motor.

[0016] Preferably, the elastic ejection mechanism comprises a base, a movable plate, a guide column, an elastic support member and a limit block;

[0017] The base is fixedly installed at the bottom of the bottom barrel, a pair of guide columns are slidably installed on the base, the top ends of the guide columns are fixedly connected with movable plates, and elastic support members are sleeved on the guide columns;

[0018] The movable plate abuts against a limiting block fixedly installed on the inner wall of the bottom barrel.

[0019] Preferably, the dust overflow prevention mechanism comprises a middle plate, a conical cover, a bottom cylinder, an inclined rod and a baffle;

[0020] The middle plate is slidably mounted on the positioning column, a conical cover is fixedly mounted on the bottom of the middle plate, and a bottom cylinder is elastically mounted on the bottom of the conical cover;

[0021] A baffle is installed on the inner side of the conical cover, and an inclined rod is installed on the inner side of the bottom tube;

[0022] A horizontal plate is slidably installed inside the baffle, and the horizontal plate is connected to the top of the inclined rod. A hole one is arranged on the surface of the baffle, and a hole two is arranged on the horizontal plate. The relative positions of the holes one and two can be changed by adjusting the position of the horizontal plate inside the baffle.

[0023] Preferably, the air guide mechanism comprises air hole 1, a fixing plate, a cylinder, air hole 2, air hole 3, an air cover, air hole 4 and an air guide pipe;

[0024] The air hole 1 is arranged at the bottom of the dust removal box and communicates with the vertical cylinder. The fixing plate is installed on the inner wall of the dust removal box, and a cylinder is installed in the middle of the fixing plate.

[0025] The fixing plate is also provided with air hole 2 and air hole 3, the air hood is arranged on the inner wall of the dust removal box, and air hole 4 is provided on the dust removal box and communicated with an external air guide pipe.

[0026] Preferably, the atomization system comprises a liquid storage tank, a liquid infusion tube, a cone and an atomization nozzle;

[0027] The cone is arranged on the fixed plate and located outside the cylinder body, and a plurality of dense air holes are arranged on the top of the cone;

[0028] The infusion pipe is installed on the top of the dust removal box, the bottom of the infusion pipe is connected with the atomizing nozzle installed in the cone, and the infusion pipe is also connected with an external liquid storage tank.

[0029] Preferably, the dust collection and anti-blocking mechanism comprises a telescopic member, a movable rod, an air guide cylinder, a dust collection box, an electrostatic dust suction rod, an insulating portion, a scraper rod, a vertical rod, a protrusion and a rubber rod;

[0030] The air guide cylinder is symmetrically installed in the dust removal box, and a dust collection box is installed at the bottom of the air guide cylinder;

[0031] A plurality of electrostatic dust collecting rods are installed at the bottom of the fixing plate, and an insulating portion is provided at the bottom of the electrostatic dust collecting rods;

[0032] A scraper rod is slidably mounted on the electrostatic dust collecting rod, a movable rod is mounted on the side of the scraper rod, and the movable rod is connected to the free end of the telescopic member installed in the dust removal box;

[0033] Sealing pads are installed at the top and bottom of the movable rod in the air guide cylinder;

[0034] A vertical rod is installed on the top of the scraper rod, a rubber rod is installed on the side of the vertical rod, and the rubber rod abuts against the protrusion on the outer side of the cone cylinder.

[0035] A high-pressure shaping device for a polytetrafluoroethylene liner pipe provided in an embodiment of the present invention can automatically eject the liner pipe after it is formed without the need for manual removal. Dust can be prevented from escaping during high-pressure shaping, and it has the characteristics of thorough collection and high utilization rate. When collecting dust, the dust will not fill the dust removal box, and the collection is extremely convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A three-dimensional structural diagram of a high-pressure shaping device for a polytetrafluoroethylene lined pipe provided in an embodiment of the present invention;

[0037] Figure 2 A schematic structural diagram of an elastic ejection mechanism in a high-pressure shaping device for a polytetrafluoroethylene lined pipe provided in an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the partial structure of a dust overflow prevention mechanism in a high-pressure shaping device for a polytetrafluoroethylene lined pipe provided in an embodiment of the present invention;

[0039] Figure 4 A cross-sectional view of a dust removal box in a high-pressure shaping device for a polytetrafluoroethylene lined pipe provided in an embodiment of the present invention;

[0040] Figure 5 A three-dimensional structural diagram of a movable rod, an electrostatic dust collecting rod and a scraping rod in a high-pressure shaping device for a polytetrafluoroethylene lined pipe provided in an embodiment of the present invention;

[0041] In the attached drawings: 1- bottom barrel; 2- fixed rod; 3- top plate; 4- driving screw; 5- positioning column; 6- dust removal box; 7- guide rod; 8- base; 9- movable plate; 10- guide column; 11- elastic support member; 12- limit block; 13- middle plate; 14- conical cover; 15- bottom barrel; 16- inclined rod; 17- baffle; 18- liquid storage tank; 19- air hole 1; 20- fixed plate; 21- cylinder; 22- air hole 2; 23- air hole 3; 24- air cover; 25- Air hole four; 26-air guide tube; 27-infusion tube; 28-cone cylinder; 29-atomizing nozzle; 30-telescopic part; 31-movable rod; 32-air guide cylinder; 33-dust collecting box; 34-electrostatic dust suction rod; 35-insulating part; 36-scraper rod; 37-vertical rod; 38-protrusion; 39-rubber rod; 40-forming cylinder; 100-directional lifting mechanism; 200-elastic ejection mechanism; 300-anti-dust overflow mechanism; 400-air guide mechanism; 500-dust collection and anti-blocking mechanism. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0044] like Figure 1-Figure 5As shown, it is a structural diagram of a high-pressure shaping device for a polytetrafluoroethylene liner pipe provided by an embodiment of the present invention, comprising a bottom barrel 1, a directional lifting mechanism 100, an elastic ejection mechanism 200, an anti-dust overflow mechanism 300, an air guide mechanism 400, an atomization system and a dust collection and anti-blocking mechanism 500, wherein the directional lifting mechanism 100 is arranged on the outside of the bottom barrel 1 and is driven by an external motor to push the shaping cylinder 40 to adjust its position in the bottom barrel 1; the elastic ejection mechanism 200 is arranged at the bottom of the bottom barrel 1 and is used to eject the liner pipe after it is formed; the anti-dust overflow mechanism 300 is installed on the top of the bottom barrel 1, and the anti-dust overflow mechanism 300 and the positioning column in the directional lifting mechanism 100 are connected. 5 sliding connection to prevent dust from overflowing; the air guide mechanism 400 is arranged in the dust removal box 6 in the directional lifting mechanism 100, and the air guide mechanism 400 is connected to the middle plate 13 in the dust overflow prevention mechanism 300 through a vertical cylinder, and an exhaust fan is arranged inside the middle plate 13, so that after the inner liner tube is formed, the excess powder is introduced into the dust removal box 6 through the vertical cylinder; the atomization system is installed in the dust removal box 6, and the atomization system cooperates with the air guide mechanism 400 to make the powder sink; the dust collection and anti-blocking mechanism 500 is arranged on the dust removal box 6, and the dust collection and anti-blocking mechanism 500 cooperates with the atomization system to collect the system dust and prevent the cone 28 in the atomization system from being blocked.

[0045] In one example of the present invention, the telescopic member 30 described in the present application can select linear drive devices such as air cylinders, hydraulic cylinders, electric cylinders and electric telescopic rods when actually used. The telescopic member 30 and the external motor are electrically connected to an independently arranged controller to adjust the working process of the shaping device.

[0046] like Figure 1 As shown, as a preferred embodiment of the present invention, the directional lifting mechanism 100 includes a fixing rod 2, a top plate 3, a driving screw 4, a positioning column 5, a dust removal box 6 and a guide rod 7;

[0047] The fixing rod 2 is fixedly installed on both sides of the bottom barrel 1, a top plate 3 is arranged on the top of the fixing rod 2, and a positioning column 5 slidably connected to the top plate 3 is installed on the fixing rod 2;

[0048] A dust removal box 6 is installed at the bottom of the top plate 3, and a guide rod 7 is symmetrically installed at the bottom end of the guide rod 7, and the guide rod 7 is fixedly connected to the base 8;

[0049] A driving screw 4 for driving the top plate 3 to move is installed on the fixing rod 2, and the driving screw 4 is connected to the shaft end of the external motor.

[0050] In one example of the present invention, when the external motor is working, it drives the driving screw 4 to rotate along the fixed rod 2, and the driving screw 4 pushes the top plate 3 to slide along the positioning column 5. The dust removal box 6, the guide rod 7 and the molding cylinder 40 move synchronously with the top plate 3 to facilitate the adjustment of the relative position between the molding cylinder 40 and the bottom barrel 1.

[0051] like Figure 2 As shown, as another preferred embodiment of the present invention, the elastic ejection mechanism 200 includes a base 8, a movable plate 9, a guide column 10, an elastic support member 11 and a limit block 12;

[0052] The base 8 is fixedly installed at the bottom of the bottom barrel 1, and a pair of guide columns 10 are slidably installed on the base 8. The top of the guide column 10 is fixedly connected to the movable plate 9, and an elastic support member 11 is sleeved on the guide column 10;

[0053] The movable plate 9 abuts against a limiting block 12 fixedly mounted on the inner wall of the bottom barrel 1 .

[0054] In one example of the present invention, when the molding cylinder 40 is inside the bottom barrel 1, powder is added into the chamber between the bottom barrel 1 and the molding cylinder 40, and the powder is molded under high pressure. After the molding is completed, the molding cylinder 40 is separated from the bottom barrel 1, and the movable disk 9 moves upward under the action of the elastic support member 11 to push the inner lining tube outward.

[0055] like Figure 1 and Figure 3 As shown, as another preferred embodiment of the present invention, the dust overflow prevention mechanism 300 includes a middle plate 13, a conical cover 14, a bottom cylinder 15, an inclined rod 16 and a baffle 17;

[0056] The middle plate 13 is slidably mounted on the positioning column 5, a cone cover 14 is fixedly mounted on the bottom of the middle plate 13, and a bottom cylinder 15 is elastically mounted on the bottom of the cone cover 14;

[0057] A baffle 17 is installed on the inner side of the conical cover 14, and an inclined rod 16 is installed on the inner side of the bottom tube 15;

[0058] A horizontal plate is slidably installed inside the baffle 17, and the horizontal plate is connected to the top of the inclined rod 16. A hole one is provided on the surface of the baffle 17, and a hole two is provided on the horizontal plate. The relative positions of the holes one and two can be changed by adjusting the position of the horizontal plate inside the baffle 17.

[0059] In one embodiment of the present invention, hole one and hole two are staggered when filling powder, and the bottom barrel 1, the shaping barrel 40 and the baffle 17 form a relatively independent space to facilitate high-pressure molding of the powder. After the inner liner tube is formed, during the upward movement of the conical cover 14, the bottom barrel 15 slides along the bottom end of the conical cover 14, and the cross plate is pulled by the inclined rod 16 to slide along the baffle 17, so that hole one and hole two overlap, so that when the bottom barrel 15 is not separated from the bottom barrel 1, the dust moves upward through the baffle 17 under the adsorption of external force.

[0060] like Figure 1 and Figure 4 As shown, as another preferred embodiment of the present invention, the air guide mechanism 400 includes an air hole 19, a fixing plate 20, a cylinder 21, an air hole 22, an air hole 3 23, an air cover 24, an air hole 4 25 and an air guide pipe 26;

[0061] The air hole 19 is arranged at the bottom of the dust removal box 6 and communicates with the vertical cylinder. The fixing plate 20 is installed on the inner wall of the dust removal box 6. The cylinder 21 is installed in the middle of the fixing plate 20.

[0062] The fixing plate 20 is also provided with a second air hole 22 and a third air hole 23 , an air cover 24 is arranged on the inner wall of the dust removal box 6 , and an air hole 4 25 is provided on the dust removal box 6 and communicated with an external air guide pipe 26 .

[0063] In one embodiment of the present invention, after the inner liner tube is formed, the exhaust fan built into the middle plate 13 starts working, and the dust passes through the baffle 17 and moves upward along the vertical cylinder into the dust removal box 6, and moves along the cylinder 21, the cone 28, the air hole 22 and the air hole 3 23, and is also guided out along the air hole 4 25 after passing through the air hood 24, and finally discharged outward along the air guide pipe 26.

[0064] like Figure 1 and Figure 4 As shown in FIG. 1 , as another preferred embodiment of the present invention, the atomization system includes a liquid storage tank 18, a liquid infusion tube 27, a cone 28 and an atomization nozzle 29;

[0065] The cone 28 is arranged on the fixed plate 20 and is located outside the cylinder 21. A plurality of dense air holes are arranged on the top of the cone 28.

[0066] The infusion tube 27 is installed on the top of the dust removal box 6 , and the bottom of the infusion tube 27 is connected to the atomizing nozzle 29 installed in the cone 28 . The infusion tube 27 is also connected to the external liquid storage tank 18 .

[0067] In one embodiment of the present invention, when the dust-laden air moves in the cone 28, the pump body in the liquid storage tank 18 works, and the liquid is sprayed out from the atomizing nozzle 29 along the liquid infusion tube 27. Under the action of air pressure, the gas moves along the chamber between the cylinder 21 and the cone 28, and finally passes through the air hole 22 into the air guide cylinder 32 at the bottom.

[0068] like Figure 1 , Figure 4 and Figure 5 As shown, as another preferred embodiment of the present invention, the dust collection and anti-blocking mechanism 500 includes a telescopic member 30, a movable rod 31, an air guide cylinder 32, a dust collection box 33, an electrostatic dust suction rod 34, an insulating portion 35, a scraper rod 36, a vertical rod 37, a protrusion 38 and a rubber rod 39;

[0069] The air guide cylinder 32 is symmetrically installed in the dust removal box 6, and a dust collection box 33 is installed at the bottom of the air guide cylinder 32;

[0070] A plurality of electrostatic dust collecting rods 34 are installed at the bottom of the fixing plate 20, and an insulating portion 35 is provided at the bottom of the electrostatic dust collecting rods 34;

[0071] A scraper rod 36 is slidably mounted on the electrostatic dust suction rod 34, and a movable rod 31 is mounted on the side of the scraper rod 36, and the movable rod 31 is connected to the free end of the telescopic member 30 installed in the dust removal box 6;

[0072] Sealing pads are installed at the top and bottom of the movable rod 31 in the air guide cylinder 32;

[0073] A vertical rod 37 is installed on the top of the scraper rod 36 , and a rubber rod 39 is installed on the side of the vertical rod 37 . The rubber rod 39 abuts against a protrusion 38 on the outer side of the cone 28 .

[0074] In one embodiment of the present invention, after the gas enters the air guide cylinder 32, the dust is adsorbed by the electrostatic dust suction rod 34, and the telescopic member 30 works by pulling the scraper rod 36 to slide along the electrostatic dust suction rod 34 through the movable rod 31, and when it moves to the insulating part 35, the accumulated wet dust falls into the dust box 33, and the gas moves upward through the air hole 3 23. At the same time, when the scraper rod 36 is raised and lowered, the vertical rod 37 and the rubber rod 39 move accordingly, and the arranged rubber rod 39 hits the protrusion 38, thereby preventing dust from accumulating on the top of the protrusion 38 to ensure smooth air conduction.

[0075] In summary, when the external motor is working, it drives the driving screw 4 to rotate along the fixed rod 2, and the driving screw 4 pushes the top plate 3 to slide along the positioning column 5. The dust removal box 6, the guide rod 7 and the shaping cylinder 40 move synchronously with the top plate 3 to adjust the relative position between the shaping cylinder 40 and the bottom barrel 1. When filling powder, the hole 1 and the hole 2 are staggered. The bottom barrel 1, the shaping cylinder 40 and the baffle 17 form a relatively independent space to facilitate high-pressure molding of the powder. After the inner liner tube is formed, the conical cover 14 moves upward During the movement, the bottom cylinder 15 slides along the bottom end of the conical cover 14, and pulls the horizontal plate to slide along the baffle 17 through the inclined rod 16, so that the hole 1 and the hole 2 overlap. When the bottom cylinder 15 is not separated from the bottom barrel 1, the exhaust fan works, and the gas passes through the baffle 17 and moves upward along the vertical cylinder into the dust removal box 6. The pump body in the liquid storage tank 18 works, and the liquid is sprayed from the atomizing nozzle 29 along the infusion pipe 27. Under the action of air pressure, the gas moves along the chamber between the cylinder 21 and the conical cylinder 28, and finally passes through the air hole 2. The telescopic member 30 works by pulling the scraper rod 36 to slide along the electrostatic dust suction rod 34 through the movable rod 31, and when it moves to the insulating portion 35, the accumulated relatively wet dust falls into the dust collecting box 33, and the gas moves upward through the air hole 3 23, and finally passes through the air cover 24 and the air hole 4 25 and is discharged from the air guide pipe 26. At the same time, when the scraper rod 36 is raised and lowered, the vertical rod 37 and the rubber rod 39 are moved along with the scraper rod 36. The movable plate 9 moves upward under the action of the elastic support 11 to push the inner liner outward. The device can automatically push out the inner liner after it is formed, without manual removal. During high-pressure shaping, dust can be prevented from escaping. The device has the characteristics of thorough collection and high utilization rate. When collecting dust, dust will not be filled in the dust removal box 6, and collection is extremely convenient.

[0076] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0077] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-pressure shaping device for polytetrafluoroethylene lined pipes, comprising a bottom barrel, characterized in that: Also includes: A directional lifting mechanism, which is arranged outside the bottom barrel and driven by an external motor to push the shaping cylinder to adjust its position in the bottom barrel; An elastic ejection mechanism, which is arranged at the bottom of the bottom barrel and is used to eject the liner tube after it is formed; An anti-dust overflow mechanism, which is installed on the top of the bottom barrel and is slidably connected to a positioning column in the directional lifting mechanism to prevent dust from overflowing outwards; An air guide mechanism, which is arranged in the dust removal box in the directional lifting mechanism, is connected to the middle plate in the dust overflow prevention mechanism through a vertical cylinder, and an exhaust fan is arranged inside the middle plate, so that after the inner liner tube is formed, the excess powder can be introduced into the dust removal box through the vertical cylinder; Atomization system, which is installed in the dust removal box and cooperates with the air guide mechanism to make the powder sink; The dust collecting and anti-blocking mechanism is arranged on the dust removal box and cooperates with the atomization system to collect the system dust and prevent the cone in the atomization system from being blocked.

2. A high pressure shaping device for polytetrafluoroethylene lined pipe according to claim 1, characterized in that: The directional lifting mechanism includes a fixed rod, a top plate, a driving screw, a positioning column, a dust removal box and a guide rod; The fixing rods are fixedly mounted on both sides of the bottom barrel, a top plate is arranged on the top of the fixing rods, and a positioning column slidably connected to the top plate is mounted on the fixing rods; A dust removal box is installed at the bottom of the top plate, and guide rods are symmetrically installed at the bottom ends of the guide rods, and the guide rods are fixedly connected to the base; A driving screw for driving the top plate to move is installed on the fixing rod, and the driving screw is connected to the shaft end of the external motor.

3. A high pressure shaping device for polytetrafluoroethylene lined pipe according to claim 1, characterized in that: The elastic ejection mechanism comprises a base, a movable plate, a guide column, an elastic support member and a limit block; The base is fixedly installed at the bottom of the bottom barrel, a pair of guide columns are slidably installed on the base, the top ends of the guide columns are fixedly connected with movable plates, and elastic support members are sleeved on the guide columns; The movable plate abuts against a limiting block fixedly installed on the inner wall of the bottom barrel.

4. A high-pressure shaping device for polytetrafluoroethylene lined pipe according to claim 1, characterized in that: The dust overflow prevention mechanism comprises a middle plate, a conical cover, a bottom cylinder, an inclined rod and a baffle; The middle plate is slidably mounted on the positioning column, a conical cover is fixedly mounted on the bottom of the middle plate, and a bottom cylinder is elastically mounted on the bottom of the conical cover; A baffle is installed on the inner side of the conical cover, and an inclined rod is installed on the inner side of the bottom tube; A horizontal plate is slidably installed inside the baffle, and the horizontal plate is connected to the top of the inclined rod. A hole one is arranged on the surface of the baffle, and a hole two is arranged on the horizontal plate. The relative positions of the holes one and two can be changed by adjusting the position of the horizontal plate inside the baffle.

5. A high pressure shaping device for polytetrafluoroethylene lined pipe according to claim 1, characterized in that: The air guide mechanism comprises air hole 1, a fixing plate, a cylinder, air hole 2, air hole 3, an air cover, air hole 4 and an air guide pipe; The air hole 1 is arranged at the bottom of the dust removal box and communicates with the vertical cylinder. The fixing plate is installed on the inner wall of the dust removal box, and a cylinder is installed in the middle of the fixing plate. The fixing plate is also provided with air hole 2 and air hole 3, the air hood is arranged on the inner wall of the dust removal box, and air hole 4 is provided on the dust removal box and communicated with an external air guide pipe.

6. A polytetrafluoroethylene lined pipe high pressure shaping device according to claim 5, characterized in that: The atomization system comprises a liquid storage tank, a liquid infusion tube, a cone and an atomization nozzle; The cone is arranged on the fixed plate and located outside the cylinder body, and a plurality of dense air holes are arranged on the top of the cone; The infusion pipe is installed on the top of the dust removal box, the bottom of the infusion pipe is connected with the atomizing nozzle installed in the cone, and the infusion pipe is also connected with an external liquid storage tank.

7. A high pressure shaping device for polytetrafluoroethylene lined pipe according to claim 6, characterized in that: The dust collection and anti-blocking mechanism comprises a telescopic part, a movable rod, an air guide cylinder, a dust collection box, an electrostatic dust suction rod, an insulating part, a scraper rod, a vertical rod, a protrusion and a rubber rod; The air guide cylinder is symmetrically installed in the dust removal box, and a dust collection box is installed at the bottom of the air guide cylinder; A plurality of electrostatic dust collecting rods are installed at the bottom of the fixing plate, and an insulating portion is provided at the bottom of the electrostatic dust collecting rods; A scraper rod is slidably mounted on the electrostatic dust collecting rod, a movable rod is mounted on the side of the scraper rod, and the movable rod is connected to the free end of the telescopic member installed in the dust removal box; Sealing pads are installed at the top and bottom of the movable rod in the air guide cylinder; A vertical rod is installed on the top of the scraper rod, a rubber rod is installed on the side of the vertical rod, and the rubber rod abuts against the protrusion on the outer side of the cone cylinder.

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