CN221339067U - Polytetrafluoroethylene granulation collection device - Google Patents

Abstract

The utility model relates to the technical field of polytetrafluoroethylene production, specifically a polytetrafluoroethylene granulation and collection device, including a melting barrel, an auger rotatably connected in the melting barrel, a heating element provided on the outer wall of the melting barrel, an extrusion element provided on the right end of the melting barrel, the extrusion element including a water-cooling barrel, a plurality of forming tubes arranged in a ring array provided in the water-cooling barrel, the left end of the forming tube being connected to the melting barrel, a pelletizing element provided on the right side of the water-cooling barrel, a rectangular pelletizing box of the pelletizing element, a collecting element provided below the rectangular pelletizing box, the collecting element including a collection trough inclined downward, a mesh plate provided at the bottom of the inner wall of the collection trough, and a plurality of air guide branches provided below the mesh plate. In the polytetrafluoroethylene granulation and collection device, the auger pushes the molten polytetrafluoroethylene solution into the plurality of forming tubes, and the high-temperature polytetrafluoroethylene solution exchanges heat in the water-cooling barrel, so that the polytetrafluoroethylene solution in the forming tube is gradually cooled and formed during the movement, so that the formed polytetrafluoroethylene can be cut into granules by a cutting knife.

Description

A polytetrafluoroethylene granulation and collection device

Technical Field

The utility model relates to the technical field of polytetrafluoroethylene production, in particular to a polytetrafluoroethylene granulation and collection device.

Background technique

Polytetrafluoroethylene is an engineering plastic with excellent high temperature resistance, corrosion resistance, wear resistance, self-lubrication and electrical insulation properties. It is widely used in aviation, aerospace, chemical industry, electronics, medical and other fields. The common processing method of polytetrafluoroethylene is granulation, that is, polytetrafluoroethylene powder is heated and melted and extruded into strips, which are then cut into uniform particles for subsequent molding or processing.

The patent with publication number CN215943429U discloses a granulating device for polytetrafluoroethylene production, including a hopper, a fixed shell, an electric push rod, a support pad, a discharge pipe and a cutting box, an electric push rod is installed on the left side of the fixed shell, a hopper is arranged on the upper side of the fixed shell, a support pad is installed on the lower end face of the fixed shell, a cutting box is installed on the right side of the fixed shell, a cutting motor is installed on the right side of the cutting box, a discharge pipe is installed on the lower side of the cutting box, a cold air fan is installed on the right side of the upper end face of the fixed shell, a blast pipe is installed at the connection between the cold air fan and the cutting box, a blast hood is installed on the lower side of the blast pipe, a melting barrel is arranged inside the fixed shell, a feed pipe is installed at the connection between the hopper and the melting barrel, an electric heating plate is installed on the inner annular side of the melting barrel, and a push plate is installed on the right end face of the electric push rod. The design solves the problems that the original granulating device has a complex structure, the granulating operation is not convenient enough and the cost is high. The utility model has a reasonable structure, simple and convenient operation, good granulating effect and high granulating efficiency.

In the specific use of the above-mentioned prior art, when the push plate pushes the molten material in the melting barrel to the extrusion flow channel, since the material is melted into a fluid state, it is difficult to be formed into strips when output from the extrusion flow channel, and it may even flow downward directly from the right end of the extrusion flow channel and cannot be cut into particles by the cutting blade. Even if part of the material output from the extrusion flow channel is cut by the cutting blade, it will fall directly downward. Since the downward output time is very short, the airflow generated by the cooling fan is difficult to effectively cool the cut particles, resulting in the adhesion of the cut polytetrafluoroethylene particles, which affects the quality of polytetrafluoroethylene granulation. In view of this, we propose a polytetrafluoroethylene granulation collection device.

Utility Model Content

The utility model aims to provide a polytetrafluoroethylene granulation and collection device to solve the problems raised in the above background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions:

A polytetrafluoroethylene granulation and collection device comprises a melting barrel with an opening structure at the right end, an auger is rotatably connected in the melting barrel, a first motor for driving the auger to rotate is arranged on the left side of the melting barrel, a feeding hopper is arranged at the top of the outer wall of the melting barrel and near the left end, an annular groove is arranged on the outer wall of the melting barrel, a heating element for melting the material in the melting barrel is arranged in the annular groove, a worker pours polytetrafluoroethylene powder into the melting barrel through the feeding hopper, the first motor drives the auger to rotate, the auger pushes the polytetrafluoroethylene powder to the right, the heating element heats the polytetrafluoroethylene powder, and the polytetrafluoroethylene powder is heated and melted during the movement;

The right end of the melting barrel is provided with an extrusion piece, and the extrusion piece includes a water-cooling barrel fixedly connected to the right end of the melting barrel. A plurality of forming tubes arranged in a ring array are provided between the left and right sides of the inner wall of the water-cooling barrel. The left end of the forming tube passes through the left side of the inner wall of the water-cooling barrel and is connected with the melting barrel. There is flowing cold water in the water-cooling barrel. The auger pushes the molten polytetrafluoroethylene solution into the plurality of forming tubes. The high-temperature polytetrafluoroethylene solution in the forming tube exchanges heat with the cold water in the water-cooling barrel, so that the polytetrafluoroethylene solution in the forming tube is gradually cooled and formed during the movement.

A pelletizing piece is provided on the right side of the water-cooling cylinder, and the pelletizing piece includes a rectangular pelletizing box fixedly connected to the right side of the water-cooling cylinder, and the bottom of the rectangular pelletizing box is an open structure. The right end of the forming tube sequentially penetrates the right side of the inner wall of the water-cooling cylinder and the left side of the rectangular pelletizing box to the inside of the rectangular pelletizing box. A rotating shaft is rotatably connected to the right side of the inner wall of the rectangular pelletizing box, and a cutting knife is provided on the left end of the rotating shaft. A second motor for driving the rotating shaft to rotate is provided on the right side of the rectangular pelletizing box. The second motor drives the rotating shaft to rotate, and the rotating shaft drives the cutting knife to rotate. The cylindrical polytetrafluoroethylene output from the forming tube is cut into pellets by the cutting knife, and the polytetrafluoroethylene pellets fall from the opening at the bottom of the rectangular pelletizing box.

A collecting piece is provided below the rectangular pelletizing box, and the collecting piece includes a feed trough inclined downward, and the right end of the feed trough is lower than the left end, that is, the right end of the feed trough is the discharging end, for discharging the collected cooled and formed polytetrafluoroethylene particles, and a mesh plate is provided at the bottom of the inner wall of the feed trough, and strip fixing plates are provided on the front and rear sides of the bottom of the feed trough, and a plurality of equally spaced air guide branch pipes are provided between the two strip fixing plates, and a plurality of air outlet pipes equally spaced front and back are provided on the top of the outer wall of the air guide branch pipe, and the plurality of air outlet pipes output cold air upward to cool the polytetrafluoroethylene particles on the mesh plate, thereby ensuring that the polytetrafluoroethylene particles are completely cooled and avoiding the polytetrafluoroethylene particles from sticking to each other.

Preferably, a support plate is provided at the bottom of the outer wall of the melting cylinder and near the left end, and a support plate is also provided at the bottom of the outer wall of the water cooling cylinder and near the right end, which supports the melting cylinder and the water cooling cylinder.

Preferably, a liquid inlet pipe with a valve is provided at the bottom of the outer wall of the water-cooling cylinder and near the left end, and the liquid inlet pipe is externally connected to a cold water supply device. A liquid outlet pipe with a valve is provided at the top of the outer wall of the water-cooling cylinder and near the right end, and the liquid outlet pipe is externally connected to a hot water recovery device to avoid water waste.

Preferably, the left side of the cutting knife is 1-2 mm away from the right end of the forming tube to avoid the polytetrafluoroethylene output from the forming tube from bending downward due to the distance, thereby ensuring that the cutting knife can pelletize the polytetrafluoroethylene.

Preferably, a plurality of equidistantly arranged first guide plates are provided on the front side of the inner wall of the aggregate trough, and a plurality of equidistantly arranged second guide plates are provided on the rear side of the inner wall of the aggregate trough. The plurality of first guide plates and the plurality of second guide plates are arranged in an alternating manner, with the rear end of the first guide plate being located to the right of the front end, and the front end of the second guide plate being located to the right of the rear end. By setting up the plurality of first guide plates and second guide plates, the moving time of the polytetrafluoroethylene particles on the aggregate trough can be extended, thereby ensuring that the polytetrafluoroethylene particles can be effectively cooled by cold air, thereby avoiding the adhesion of the polytetrafluoroethylene particles.

Preferably, the front ends of the plurality of air guide branch pipes are commonly connected to an air guide main pipe, legs are provided at the bottom of the aggregate trough and near the four corners, the four legs are commonly connected to a partition, an air cooler is provided on the top of the partition, the air outlet end of the air cooler is connected to the air guide main pipe through an air guide hose, cold air is generated by the air cooler, the cold air enters into the air guide main pipe from the air guide hose, and then enters into the plurality of air guide branch pipes from the air guide main pipe.

Preferably, the heating element includes an electric heating plate, which is coated on the inner wall of the annular groove. An insulating shell is provided on the outer side of the electric heating plate. A thermostat is provided on the insulating shell for controlling the heating temperature of the electric heating plate. The insulating shell can reduce the loss of the heating temperature of the electric heating plate.

Compared with the prior art, the beneficial effects of the utility model are:

1. The polytetrafluoroethylene granulation and collection device, the auger pushes the polytetrafluoroethylene powder to the right, the heating element heats the polytetrafluoroethylene powder, so that the polytetrafluoroethylene powder is heated and melted during the movement, and the auger pushes the molten polytetrafluoroethylene solution into multiple forming tubes, and the high-temperature polytetrafluoroethylene solution exchanges heat with the cold water in the water-cooling cylinder in the forming tube, so that the polytetrafluoroethylene solution in the forming tube is gradually cooled and formed during the movement, and then the cylindrical polytetrafluoroethylene output by the forming tube can be cut into particles by the cutting knife, and the cold air is output upward through multiple air outlet pipes to cool the polytetrafluoroethylene particles falling on the mesh plate, so as to ensure that the polytetrafluoroethylene particles are completely cooled and avoid the polytetrafluoroethylene particles from sticking to each other.

2. The polytetrafluoroethylene granulation and collection device can prolong the moving time of the polytetrafluoroethylene particles on the collecting trough by setting a plurality of first guide plates and second guide plates, thereby ensuring that the polytetrafluoroethylene particles can be effectively cooled by cold air, thereby avoiding the adhesion of the polytetrafluoroethylene particles.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a partial structural schematic diagram of the utility model;

FIG3 is a schematic diagram of the assembly structure of the melting tube and the heating element in the utility model;

FIG4 is a schematic diagram of the structure of the extrusion member in the utility model;

FIG5 is a schematic diagram of the structure of the pelletizing member in the utility model;

FIG6 is a schematic diagram of the structure of the collecting member in the present invention;

FIG. 7 is a schematic diagram of a partial structure of a collecting member in the present invention;

FIG. 8 is a second schematic diagram of a partial structure of the collecting member in the present invention.

In the figure: 1. melting barrel; 10. annular groove; 2. feed hopper; 3. auger; 4. first motor; 5. heating element; 50. electric heating plate; 51. heat-insulating shell; 6. extruding element; 60. water-cooling barrel; 61. forming tube; 62. liquid inlet pipe; 63. liquid outlet pipe; 7. pelletizing element; 70. rectangular pelletizing box; 71. rotating shaft; 72. cutting knife; 73. second motor; 8. collecting element; 80. collecting trough; 81. mesh plate; 82. first guide plate; 83. second guide plate; 84. strip fixing plate; 85. air guide branch pipe; 850. air outlet pipe; 86. air guide main pipe; 87. supporting leg; 88. partition; 89. air cooler; 890. air guide hose; 9. supporting vertical plate.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

Please refer to Figures 1 to 8. The utility model provides a technical solution:

A polytetrafluoroethylene granulation and collection device comprises a melting barrel 1 with an opening structure at the right end, an auger 3 is rotatably connected in the melting barrel 1, a first motor 4 for driving the auger 3 to rotate is provided on the left side of the melting barrel 1, a feed hopper 2 is provided at the top of the outer wall of the melting barrel 1 and near the left end, an annular groove 10 is provided on the outer wall of the melting barrel 1, a heating element 5 for melting the material in the melting barrel 1 is provided in the annular groove 10, a worker pours polytetrafluoroethylene powder into the melting barrel 1 through the feed hopper 2, the first motor 4 drives the auger 3 to rotate, the auger 3 pushes the polytetrafluoroethylene powder to the right, and the heating element 5 heats the polytetrafluoroethylene powder so that the polytetrafluoroethylene powder is heated and melted during the movement;

The right end of the melting barrel 1 is provided with an extrusion piece 6, which includes a water-cooling barrel 60 fixedly connected to the right end of the melting barrel 1. A plurality of forming tubes 61 arranged in a circular array are provided between the left and right sides of the inner wall of the water-cooling barrel 60. The left end of the forming tube 61 penetrates the left side of the inner wall of the water-cooling barrel 60 and is connected with the melting barrel 1. There is flowing cold water in the water-cooling barrel 60. The auger 3 pushes the molten polytetrafluoroethylene solution into the plurality of forming tubes 61. The high-temperature polytetrafluoroethylene solution in the forming tube 61 exchanges heat with the cold water in the water-cooling barrel 60, so that the polytetrafluoroethylene solution in the forming tube 61 is gradually cooled and formed during the movement.

A pelletizing member 7 is provided on the right side of the water-cooling cylinder 60. The pelletizing member 7 includes a rectangular pelletizing box 70 fixedly connected to the right side of the water-cooling cylinder 60. The bottom of the rectangular pelletizing box 70 is an open structure. The right end of the forming tube 61 sequentially penetrates the right side of the inner wall of the water-cooling cylinder 60 and the left side of the rectangular pelletizing box 70 to the inside of the rectangular pelletizing box 70. A rotating shaft 71 is rotatably connected to the right side of the inner wall of the rectangular pelletizing box 70. A cutting knife 72 is provided at the left end of the rotating shaft 71. A second motor 73 for driving the rotating shaft 71 to rotate is provided on the right side of the rectangular pelletizing box 70. The second motor 73 drives the rotating shaft 71 to rotate. The rotating shaft 71 drives the cutting knife 72 to rotate. The cylindrical polytetrafluoroethylene output from the forming tube 61 is cut into pellets by the cutting knife 72. The polytetrafluoroethylene pellets fall from the opening at the bottom of the rectangular pelletizing box 70.

A collecting piece 8 is provided below the rectangular pelletizing box 70, and the collecting piece 8 includes a feed trough 80 which is inclined downward, and the right end of the feed trough 80 is lower than the left end, that is, the right end of the feed trough 80 is the discharging end, for discharging the collected cooled and formed polytetrafluoroethylene particles, and a mesh plate 81 is provided at the bottom of the inner wall of the feed trough 80, and strip fixing plates 84 are provided on the front and rear sides of the bottom of the feed trough 80, and a plurality of equally spaced air guide branch pipes 85 are provided between the two strip fixing plates 84, and a plurality of air outlet pipes 850 which are equally spaced front and back are provided on the top of the outer wall of the air guide branch pipe 85, and the plurality of air outlet pipes 850 output cold air upward to cool the polytetrafluoroethylene particles on the mesh plate 81, thereby ensuring that the polytetrafluoroethylene particles are completely cooled and preventing the polytetrafluoroethylene particles from sticking to each other.

In this embodiment, a support plate 9 is provided at the bottom of the outer wall of the melting tube 1 and near the left end, and a support plate 9 is also provided at the bottom of the outer wall of the water-cooling tube 60 and near the right end, which supports the melting tube 1 and the water-cooling tube 60.

Specifically, a liquid inlet pipe 62 with a valve is provided at the bottom of the outer wall of the water-cooling cylinder 60 and near the left end, and the liquid inlet pipe 62 is externally connected to a cold water supply device. A liquid outlet pipe 63 with a valve is provided at the top of the outer wall of the water-cooling cylinder 60 and near the right end, and the liquid outlet pipe 63 is externally connected to a hot water recovery device to avoid water waste.

Furthermore, the left side of the cutting knife 72 is 1-2 mm away from the right end of the forming tube 61 to avoid the polytetrafluoroethylene output from the forming tube 61 bending downward due to the distance, thereby ensuring that the cutting knife 72 can pelletize the polytetrafluoroethylene.

Furthermore, a plurality of equidistantly arranged first guide plates 82 are provided on the front side of the inner wall of the aggregate trough 80, and a plurality of equidistantly arranged second guide plates 83 are provided on the rear side of the inner wall of the aggregate trough 80. The plurality of first guide plates 82 and the plurality of second guide plates 83 are arranged in a staggered manner, with the rear end of the first guide plate 82 being located to the right of the front end, and the front end of the second guide plate 83 being located to the right of the rear end. By providing the plurality of first guide plates 82 and second guide plates 83, the moving time of the polytetrafluoroethylene particles on the aggregate trough 80 can be extended, thereby ensuring that the polytetrafluoroethylene particles can be effectively cooled by cold air, thereby avoiding the adhesion of the polytetrafluoroethylene particles.

Furthermore, the front ends of the multiple air guide branch pipes 85 are commonly connected to the air guide main pipe 86, and the bottom of the collecting trough 80 and near the four corners are provided with supporting legs 87. The four supporting legs 87 are commonly connected to the partition 88. The top of the partition 88 is provided with an air cooler 89. The air outlet end of the air cooler 89 is connected to the air guide main pipe 86 through an air guide hose 890. Cold air is generated by the air cooler 89. The cold air enters the air guide main pipe 86 from the air guide hose 890, and then enters the multiple air guide branch pipes 85 from the air guide main pipe 86.

Furthermore, the heating element 5 includes an electric heating plate 50. The electric heating plate 50, the first motor 4, the second motor 73 and the air cooler 89 all operate with an external power supply. The electric heating plate 50 is coated on the inner wall of the annular groove 10. An insulating shell 51 is provided on the outer side of the electric heating plate 50. A thermostat is provided on the insulating shell 51 for controlling the heating temperature of the electric heating plate 50. The insulating shell 51 can reduce the loss of the heating temperature of the electric heating plate 50.

When the polytetrafluoroethylene granulation and collection device of this embodiment is in use, the staff starts the electric heating plate 50, the first motor 4, the second motor 73 and the cooling fan 89, and then pours polytetrafluoroethylene powder into the melting barrel 1 through the feed hopper 2. The first motor 4 drives the auger 3 to rotate, and the auger 3 pushes the polytetrafluoroethylene powder to the right. The heating element 5 heats the polytetrafluoroethylene powder so that the polytetrafluoroethylene powder is melted when it moves in the melting barrel 1. The auger 3 pushes the molten polytetrafluoroethylene solution into multiple forming tubes 61. The high-temperature polytetrafluoroethylene solution in the forming tube 61 exchanges heat with the cold water in the water-cooling tube 60, so that the polytetrafluoroethylene solution in the forming tube 61 is gradually cooled and formed during the movement. The second motor 73 drives the rotating shaft 71 to rotate, and the rotating shaft 71 drives the cutting knife 72 to rotate. The cylindrical polytetrafluoroethylene output from the forming tube 61 is cut into particles by the cutting knife 72, and the polytetrafluoroethylene particles fall from the opening at the bottom of the rectangular pelletizing box 70 into the collecting trough 80. The air cooler 89 generates cold air, which enters the air guide pipe 86 from the air guide hose 890, and then enters the multiple air guide branch pipes 85 from the air guide pipe 86, and is finally output upward from the multiple air outlet pipes 850. The polytetrafluoroethylene particles that fall into the collecting trough 80 roll to the right. Under the action of the multiple first guide plates 82 and the multiple second guide plates 83, the moving time of the polytetrafluoroethylene particles on the collecting trough 80 can be extended. The cold air output by the multiple air outlet pipes 850 cools the rolling polytetrafluoroethylene particles, thereby avoiding the adhesion of the polytetrafluoroethylene particles and improving the granulation efficiency and quality of the polytetrafluoroethylene particles.

The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims (7)

1. The utility model provides a polytetrafluoroethylene granulation collection device, includes that the right-hand member is melt section of thick bamboo (1) of open structure, its characterized in that: the rotary type feeding device is characterized in that the screw conveyor (3) is rotationally connected with the melt barrel (1), a first motor (4) for driving the screw conveyor (3) to rotate is arranged on the left side of the melt barrel (1), a feed hopper (2) is arranged at the top of the outer wall of the melt barrel (1) and close to the left end, an annular groove (10) is arranged on the outer wall of the melt barrel (1), a heating piece (5) for melting materials in the melt barrel (1) is arranged in the annular groove (10), a material extruding piece (6) is arranged at the right end of the melt barrel (1), the material extruding piece (6) comprises a water cooling barrel (60) fixedly connected to the right end of the melt barrel (1), a plurality of forming pipes (61) which are distributed in an annular array are arranged between the left side and the right side of the inner wall of the water cooling cylinder (60), the left end of each forming pipe (61) penetrates through the left side of the inner wall of the water cooling cylinder (60) and is communicated with the melt cylinder (1), a grain cutting piece (7) is arranged on the right side of the water cooling cylinder (60), the grain cutting piece (7) comprises a rectangular grain cutting box (70) fixedly connected to the right side of the water cooling cylinder (60), the bottom of the rectangular grain cutting box (70) is of an opening structure, the right end of each forming pipe (61) sequentially penetrates through the right side of the inner wall of the water cooling cylinder (60) and the left side of the rectangular grain cutting box (70) to the inside of the rectangular grain cutting box (70), the utility model discloses a grain cutting machine, including rectangle grain cutting case (70) inner wall, right side rotation of rectangle grain cutting case (70) inner wall is connected with axis of rotation (71), the left end of axis of rotation (71) is equipped with cutting knife (72), the right side of rectangle grain cutting case (70) is equipped with and is used for driving axis of rotation (71) pivoted second motor (73), the below of rectangle grain cutting case (70) is equipped with collecting piece (8), collecting piece (8) are including collecting groove (80) that downward sloping set up, the bottom of collecting groove (80) inner wall is equipped with otter board (81), the front and back both sides of collecting groove (80) bottom all are equipped with bar fixed plate (84), two be equipped with wind-guiding branch pipe (85) that a plurality of equidistance were arranged between bar fixed plate (84), the top of wind-guiding branch pipe (85) outer wall is equipped with a plurality of outlet pipe (850) that are the equidistance front and back and arrange.

2. The polytetrafluoroethylene granulation and collection device according to claim 1, wherein: the bottom of the outer wall of the melting barrel (1) and the position close to the left end are provided with supporting vertical plates (9), and the bottom of the outer wall of the water cooling barrel (60) and the position close to the right end are also provided with supporting vertical plates (9).

3. The polytetrafluoroethylene granulation and collection device according to claim 1, wherein: the bottom of the outer wall of the water cooling cylinder (60) and the position close to the left end are provided with liquid inlet pipes (62) with valves, and the top of the outer wall of the water cooling cylinder (60) and the position close to the right end are provided with liquid outlet pipes (63) with valves.

4. The polytetrafluoroethylene granulation and collection device according to claim 1, wherein: the left side of the cutter (72) is 1-2mm away from the right end of the forming tube (61).

5. The polytetrafluoroethylene granulation and collection device according to claim 1, wherein: the front side of the inner wall of the material collecting tank (80) is provided with a plurality of first guide plates (82) which are distributed at equal intervals, the rear side of the inner wall of the material collecting tank (80) is provided with a plurality of second guide plates (83) which are distributed at equal intervals, and the first guide plates (82) and the second guide plates (83) are distributed in a staggered mode.

6. The polytetrafluoroethylene granulation and collection device according to claim 1, wherein: the front ends of a plurality of wind-guiding branch pipes (85) are connected with wind-guiding main pipe (86) jointly, the bottom of groove (80) gathers materials and all be equipped with landing leg (87) near the position of four corners, four landing leg (87) are connected with baffle (88) jointly, the top of baffle (88) is equipped with air-cooler (89), the air-out end of air-cooler (89) is responsible for (86) intercommunication with the wind-guiding through wind-guiding hose (890).

7. The polytetrafluoroethylene granulation and collection device according to claim 1, wherein: the heating element (5) comprises an electric heating plate (50), the electric heating plate (50) is coated on the inner wall of the annular groove (10), a heat insulation shell (51) is arranged on the outer side of the electric heating plate (50), and a temperature controller is arranged on the heat insulation shell (51).