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CN-121989382-A - Raw material stirring structure for polytetrafluoroethylene production

CN121989382ACN 121989382 ACN121989382 ACN 121989382ACN-121989382-A

Abstract

The invention belongs to the technical field of polytetrafluoroethylene production, and particularly relates to a raw material stirring structure for polytetrafluoroethylene production, which comprises a frame, wherein a premixing cylinder is arranged at the top of the frame, a rotating shaft is arranged in the premixing cylinder, a crushing rod, a stirring rod and a conveying blade are sequentially arranged on the rotating shaft from top to bottom, a filter screen is arranged below the crushing rod and is arranged on the inner wall of the premixing cylinder, the bottom of the premixing cylinder is connected with a telescopic blanking pipe piece, an extension pipe at the bottom of the blanking pipe piece moves downwards to prop against a feed inlet of the mixing cylinder, materials in the premixing cylinder fall into the mixing cylinder through the blanking pipe piece, transmission shafts are arranged on two sides of the outer wall of the mixing cylinder, the mixing cylinder rotates by taking the central axis of the transmission shaft as a rotating shaft, the transmission shafts are rotatably arranged on a mounting plate, the mounting plate is arranged on a wheel carrier, and the mixing cylinder revolves by taking the central axis of the wheel carrier as the rotating shaft.

Inventors

  • SONG HAITAO
  • CHEN QINYU
  • WANG PEIHUA

Assignees

  • 青岛奥特富隆新材料有限公司

Dates

Publication Date
20260508
Application Date
20260402

Claims (10)

  1. 1. The utility model provides a polytetrafluoroethylene production is with raw materials stirring structure, includes frame (1), its characterized in that, the top of frame (1) is equipped with and mixes section of thick bamboo (2) in advance, the inside that mixes section of thick bamboo (2) is equipped with pivot (3), pivot (3) from the top down are equipped with broken pole (4), puddler (5) and conveying blade (6) in proper order, the below of broken pole (4) is equipped with filter screen (7), filter screen (7) are installed on the inner wall that mixes section of thick bamboo (2) in advance, the bottom that mixes section of thick bamboo (2) is connected with telescopic unloading pipe fitting, the extension pipe (8) of unloading pipe fitting bottom is moved downwards and is offloaded with the feed inlet of mixing section of thick bamboo (44) in advance, the both sides of mixing section of thick bamboo (44) outer wall are equipped with transmission shaft (9), the central axis that mixes section of thick bamboo (9) is rotation axis (3) are used in order to transmission shaft (9), transmission shaft (9) rotate and install on mounting panel (10), mounting panel (10) are installed on the wheel carrier (44) in order to revolve around the central axis (3) in mixing section of thick bamboo (44).
  2. 2. The raw material stirring structure for polytetrafluoroethylene production according to claim 1, wherein the wheel frame comprises two annular roller rings (11), the two roller rings (11) are connected through a cross rod (12), a supporting frame (13) is arranged on the roller rings (11), the mounting plate (10) is mounted on the supporting frame (13), the transmission shaft (9) is rotatably mounted on the mounting plate (10), a driving motor (14) is arranged on the mounting plate (10), the output end of the driving motor (14) is connected with the transmission shaft (9), a circular arc-shaped sliding rail (15) is arranged on the mounting plate (10), a roller (16) is arranged on the outer wall of the mixing drum (44), and the roller (16) is in rolling connection with the sliding rail (15).
  3. 3. The raw material stirring structure for polytetrafluoroethylene production according to claim 2, wherein supporting rails (17) are arranged on two sides of the periphery of the roller ring (11), supporting rollers (18) are arranged on the supporting rails (17), the roller ring (11) is in rolling connection with the supporting rollers (18), the supporting rails (17) are arranged on a base (19), a driving wheel (20) and an auxiliary wheel (21) are rotatably arranged on the base (19) and used for supporting and driving the roller ring (11) to rotate, the driving wheel (20) is connected with a rotating motor (23) through a sprocket chain mechanism (22), the rotating motor (23) is arranged on the base (19), and the base (19) is arranged on the frame (1).
  4. 4. The raw material stirring structure for polytetrafluoroethylene production according to claim 1, wherein a fixed pipe (24) is arranged at the top of the extension pipe (8), the fixed pipe (24) is connected with a first gate valve (25) at the bottom of the premixing barrel (2), a lifting cylinder (26) is arranged on the fixed pipe (24), the output end of the lifting cylinder (26) is connected with the extension pipe (8), a sliding rod (27) is arranged on the extension pipe (8), the sliding rod (27) is in sliding connection with the fixed pipe (24), a second gate valve (28) is arranged at the top of the mixing barrel (44), and the bottom of the extension pipe (8) is in contact with the second gate valve (28) by moving downwards.
  5. 5. The stirring structure for raw materials for producing polytetrafluoroethylene according to claim 1, wherein the mixing drum (44) has a double-layer structure comprising an inner layer and an outer layer, a heating cavity (29) is arranged between the inner layer and the outer layer, and a water inlet pipe (45) and a water outlet pipe (46) which are communicated with the heating cavity (29) are arranged on the mixing drum (44).
  6. 6. The stirring structure for polytetrafluoroethylene production raw materials according to claim 1, wherein the crushing rod (4) and the cleaning rod (30) are arranged on the rotating shaft (3) in a staggered manner, the bottom of the crushing rod (4) is in a zigzag shape (31), and the bottoms of the crushing rod (4) and the cleaning rod (30) are in contact with the filter screen (7).
  7. 7. The raw material stirring structure for polytetrafluoroethylene production according to claim 16, wherein a plurality of conveying drums (32) are arranged above the premixing drum (2), a spiral conveying rod (33) is arranged in the conveying drums (32), one end of the spiral conveying rod (33) penetrates through the side wall of the conveying drums (32) to be connected with a transmission belt motor, a storage bin (35) is arranged on the conveying drums (32), a rotating rod (36) is arranged at the joint of the bottom of the storage bin (35) and the conveying drums (32), a plurality of groups of stirring rods (37) distributed in an array are arranged on the rotating rod (36), and the rotating rod (36) is in transmission connection with the transmission motor (34) through a sprocket chain mechanism (22).
  8. 8. The raw material stirring structure for polytetrafluoroethylene production according to claim 1, wherein a trolley (47) is placed below the mixing drum (44), an annular limiting frame (38) is arranged on a bottom plate of the trolley (47), and the receiving drum (39) is placed in the limiting frame (38).
  9. 9. The stirring structure for polytetrafluoroethylene production raw materials according to claim 8, wherein a receiving space (40) allowing a trolley (47) to move is arranged at the bottom of the frame (1), and inclined guide plates (41) are arranged at two sides of the receiving space (40).
  10. 10. The stirring structure for raw materials for producing polytetrafluoroethylene according to claim 1, wherein the top of the rotating shaft (3) penetrates through a sealing cover (42) at the top of the premixing barrel (2) to be connected with a power motor (43).

Description

Raw material stirring structure for polytetrafluoroethylene production Technical Field The invention relates to the technical field of polytetrafluoroethylene production, in particular to a raw material stirring structure for polytetrafluoroethylene production. Background Polytetrafluoroethylene (PTFE) articles are produced by processes that are quite different from conventional thermoplastic processing methods due to their unique material characteristics (e.g., extremely high melt viscosity, non-melt flowability). The preparation process of polytetrafluoroethylene product includes the steps of (1) preparing raw materials, mixing fine powder of suspension polymerized PTFE resin with pigment (such as graphite, molybdenum disulfide, carbon fiber, etc.), 2) preforming, adding a certain amount of PTFE powder into a metal mold, slowly pressing at room temperature or slightly higher temperature and pressure of 10-50 MPa to compact the loose powder into compact preform with certain strength and shape, (3) sintering, taking out the preform from the mold, placing the preform into a sintering furnace with precise temperature control, and (4) cooling, and after sintering, slowly cooling to room temperature at a strictly controlled speed. In actual production, in the raw material preparation stage, the possible condition of caking exists in PTFE powder and pigment, need to carry out the breakage with PTFE powder and pigment in advance, then pour PTFE powder and pigment into the churn and carry out intensive mixing, the course of working is complicated, and inefficiency, in addition, in PTFE powder and pigment stirring mixing process, there is the inhomogeneous condition of mixing to influence the quality of product. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a raw material stirring structure for producing polytetrafluoroethylene. The utility model provides a polytetrafluoroethylene production is with raw materials stirring structure, includes the frame, the top of frame is equipped with the cylinder of mixing in advance, the inside of cylinder of mixing in advance is equipped with the pivot, pivot from the top down is equipped with broken pole, puddler and conveying blade in proper order, broken pole's below is equipped with the filter screen, the filter screen is installed on the inner wall of cylinder of mixing in advance, the bottom of cylinder of mixing in advance is connected with telescopic unloading pipe fitting, the extension pipe of unloading pipe fitting bottom moves down and offsets with the feed inlet of mixing cylinder, and the material in the cylinder of mixing falls into the mixing cylinder through unloading pipe fitting in advance, the both sides of mixing cylinder outer wall are equipped with the transmission shaft, the mixing cylinder uses the central axis of transmission shaft to rotate as the rotation axis, the transmission shaft rotates and installs on the mounting panel, the mounting panel is installed on the wheel carrier, the mixing cylinder uses the central axis of wheel carrier to revolve as the rotation axis. Further, the wheel carrier comprises two annular roller rings, the two roller rings are connected through a cross rod, a supporting frame is arranged on the roller rings, the mounting plate is mounted on the supporting frame, the transmission shaft is rotatably mounted on the mounting plate, a driving motor is arranged on the mounting plate, the output end of the driving motor is connected with the transmission shaft, a circular arc-shaped sliding rail is arranged on the mounting plate, and a roller is arranged on the outer wall of the mixing drum and is in rolling connection with the sliding rail. Further, the both sides of roller circle periphery are equipped with the supporting track, be equipped with the supporting roller on the supporting track, roller circle and supporting roller roll connection, the supporting track is installed on the base, it is rotatory that the drive wheel and the auxiliary wheel are used for supporting and driving the roller circle to rotate on the base, the drive wheel passes through sprocket chain mechanism and is connected with the rotating electrical machines, the rotating electrical machines is installed on the base, the base is installed in the frame. Further, the top of extension pipe is equipped with the fixed pipe, the fixed pipe is connected with the first gate valve of premixing section of thick bamboo bottom, be equipped with the lift cylinder on the fixed pipe, the output and the extension union coupling of lift cylinder are equipped with the slide bar on the extension pipe, slide bar and fixed pipe sliding connection, the top of mixing section of thick bamboo is equipped with the second gate valve, the extension pipe moves down and makes its bottom and contradict with the second gate valve. Further, the mixing drum is of a double-layer structure comprising an inner layer and an outer layer,