PFA filament raw material mixing equipment

Abstract

The utility model discloses a PFA (Polyfluoroalkoxy) filament raw material mixing device which comprises a mixing cylinder, two feeding pipes and a discharging pipe are arranged on the mixing cylinder, two pretreatment chambers corresponding to the feeding pipes are arranged in the mixing cylinder, a premixing chamber and a main mixing chamber are arranged in the mixing cylinder, and the main mixing chamber is communicated with the two pretreatment chambers. The two pretreatment chambers are communicated with the pre-mixing chamber, the pre-mixing chamber is communicated with the main mixing chamber, the two pretreatment assemblies are arranged in the corresponding pretreatment chambers respectively, the pre-mixing assembly is located in the pre-mixing chamber, and the main mixing assembly is located in the pre-mixing chamber. The main mixing assembly is located in the main mixing chamber, a mounting chamber is formed in the mixing cylinder, the main driving part is located in the mounting chamber, different raw materials are respectively pretreated and then introduced into a narrow pre-mixing space for pretreatment operation, and the subsequent mixing uniformity is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of raw material mixing technical field, specifically, a kind of PFA filament raw material mixing equipment. BACKGROUND

[0002] At present, PFA (polytetrafluoroethylene-perfluorinated propylene copolymer) is a special plastic material with many excellent characteristics, such as chemical stability, good mechanical properties, wear resistance, high temperature performance and corrosion resistance, etc., so it is widely used in many industrial fields. In the production process of PFA filament, the mixing of raw materials is a key link.

[0003] After searching, it is found that the authorized announcement No. CN220280150U of Chinese utility model patent discloses a kind of raw material mixing equipment for enhanced ultrafine PFA filament production, the patent includes support leg, support table, mixing box and internally arranged mixing mechanism and circulating mechanism, the equipment is driven by servo motor in mixing mechanism Multiple groups of stirring blades are used to efficiently stir the raw materials, and the mixing efficiency is accelerated, and a controller is provided to improve the use efficiency and effect. However, the patent directly passes all raw materials into a larger space for mixing. Due to the uneven distribution of raw materials in the larger space and the limited mixing effect of the mixing equipment, the raw materials often appear stratification and local concentration that is too high or too low. This uneven mixing not only affects the production quality of PFA filament, but also consumes a lot of time and resources, thereby reducing production efficiency. In addition, the lack of a pretreatment step to pre-mix the raw materials also makes the mixing process more difficult, making it difficult to achieve the desired mixing effect. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the defects in the prior art. By separately pretreating different raw materials and passing them into a narrower premixing space for pretreatment operation, the uniformity of subsequent mixing is improved.

[0005] To solve the above technical problems, the technical scheme of the utility model is a PFA filament raw material mixing equipment, which includes:

[0006] A mixing cylinder is provided with two feed pipes and one discharge pipe;

[0007] Two pretreatment chambers corresponding to the feed pipes are opened in the mixing cylinder, a premixing chamber and a main mixing chamber are opened in the mixing cylinder, the two pretreatment chambers are communicated with the premixing chamber, and the premixing chamber is communicated with the main mixing chamber.

[0008] Two pretreatment assemblies are respectively arranged in the corresponding pretreatment chambers.

[0009] a premixing assembly located in the premixing chamber;

[0010] a main mixing assembly located in the main mixing chamber;

[0011] a main driving component, a mounting chamber is formed in the mixing cylinder, and the main driving component is located in the mounting chamber;

[0012] the premixing assembly is connected with the main mixing assembly, and the main driving component is connected with the premixing assembly to drive the premixing assembly to rotate in the premixing chamber to preliminarily mix the material and drive the main mixing assembly to rotate in the main mixing chamber to mix the material;

[0013] a transmission assembly is arranged between the premixing assembly and the pretreatment assembly, the transmission assembly is adapted to drive the pretreatment assembly to rotate in the pretreatment chamber, and the pretreatment assembly is adapted to grind the material entering through the feeding pipe and then send the material into the premixing chamber.

[0014] Further, the premixing assembly comprises a first premixing roller and a second premixing roller, and the first premixing roller and the second premixing roller are both rotationally installed in the premixing chamber;

[0015] a first mixing shaft is fixedly sleeved in the first premixing roller, a second mixing shaft is fixedly sleeved in the second premixing roller, the main driving component is connected with the first mixing shaft and the second mixing shaft to drive the first mixing shaft and the second mixing shaft to rotate towards each other, thereby driving the first premixing roller and the second premixing roller to rotate towards each other.

[0016] Further, the main driving component comprises a driving motor, a driving driving gear and a driving driven gear;

[0017] the driving driving gear is fixedly sleeved outside the first mixing shaft, the driving driven gear is fixedly sleeved outside the second mixing shaft, the driving driving gear and the driving driven gear are engaged, and the driving motor is connected with the first mixing shaft to drive the first mixing shaft to rotate, thereby driving the second mixing shaft to rotate towards the first mixing shaft.

[0018] Further, the main mixing assembly comprises a first main mixing roller and a second main mixing roller;

[0019] the first mixing shaft and the second mixing shaft pass through the premixing chamber and extend into the main mixing chamber, the first main mixing roller is fixedly sleeved outside the first mixing shaft in the main mixing chamber, and the second main mixing roller is fixedly sleeved outside the second mixing shaft in the main mixing chamber.

[0020] The premixing chamber is provided with a premixing outlet, and the premixing chamber is connected to the main mixing chamber through the premixing outlet.

[0021] Furthermore, the pretreatment component is a pretreatment roller, which is rotatably installed inside the pretreatment chamber;

[0022] The transmission assembly is adapted to connect one of the pretreatment rollers to the first mixing shaft, thereby driving the pretreatment roller to rotate in the corresponding pretreatment chamber;

[0023] The transmission assembly is adapted to connect another pretreatment roller to the second mixing shaft, thereby driving the pretreatment roller to rotate in the corresponding pretreatment chamber;

[0024] Both of the pretreatment chambers are provided with pretreatment outlets, and the premixing chamber is provided with a premixing inlet corresponding to the two pretreatment outlets. The pretreatment outlets are connected to the corresponding premixing inlets, and the premixing inlets are connected to the premixing chambers.

[0025] Furthermore, the transmission assembly consists of two pretreatment shafts and two synchronous belts, one of the pretreatment shafts being connected to one of the pretreatment rollers, and one of the synchronous belts being sleeved on the outside of the first mixing shaft and the pretreatment roller via a synchronous pulley;

[0026] Another pretreatment shaft is connected to the other pretreatment roller, and another synchronous belt is fitted around the outside of the second mixing shaft and the pretreatment roller via a synchronous pulley.

[0027] Furthermore, the pretreatment chamber is provided with a number of annular grinding grooves arranged at intervals, and the pretreatment roller is fixedly sleeved with a number of grinding sleeves corresponding to the grinding grooves. There is a gap between the grinding grooves and the grinding sleeves, and the grinding grooves are connected to the premixed feed inlet.

[0028] Furthermore, the mixing cylinder is also equipped with an agitation assembly, which includes a first agitation roller and a second agitation roller;

[0029] A linkage mechanism is provided between the first stirring roller and the first mixing shaft, and the linkage mechanism is adapted to drive the first mixing shaft and the first stirring roller to rotate in opposite directions;

[0030] A second linkage mechanism is provided between the second stirring roller and the second mixing shaft. The second linkage mechanism is adapted to drive the second mixing shaft and the second stirring roller to rotate in opposite directions.

[0031] Further, a cavity is formed in the mixing cylinder, the linkage mechanism one and the linkage mechanism two are located in the cavity, and the first mixing shaft and the second mixing shaft are arranged to extend into and rotate in the cavity;

[0032] The linkage mechanism one comprises a stirring driving gear one and a stirring driven gear one, the stirring driving gear one is fixedly sleeved on the outside of the first mixing shaft located in the cavity, the stirring driven gear one is fixedly sleeved on the outside of a connecting shaft arranged to rotate at the bottom of the first stirring roller in the cavity, and the stirring driving gear one and the stirring driven gear one are engaged.

[0033] The linkage mechanism two comprises a stirring driving gear two and a stirring driven gear two, the stirring driving gear two is fixedly sleeved on the outside of the second mixing shaft located in the cavity, the stirring driven gear two is fixedly sleeved on the outside of a connecting shaft arranged to rotate at the bottom of the second stirring roller in the cavity, and the stirring driving gear two and the stirring driven gear two are engaged.

[0034] By adopting the technical scheme, the following beneficial effects are achieved:

[0035] Through the arrangement of the pretreatment roller and the premixing roller, different raw materials are respectively fed into the pretreatment chamber through different feeding pipes, the raw materials are all crushed after being crushed by the corresponding pretreatment roller, and the crushed raw materials are uniformly fed into the relatively narrow premixing chamber, and the different raw materials are preliminarily mixed by the opposite rotation of the two premixing rollers. Since the premixing chamber is relatively narrow, the mixing effect is more efficient.

[0036] Through the arrangement of the main mixing roller and the two stirring rollers, the two stirring rollers are driven to rotate in opposite directions when the two main mixing rollers mix the raw materials after premixing. The two main mixing rollers rotate towards each other, and the two stirring rollers rotate in opposite directions. Different mixing directions are caused in the main mixing chamber, the mixing trajectory of the raw materials is more complex, and the mixing effect is improved, and the uniformity of mixing is improved as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0038] Figure 2 It is a schematic diagram of the internal structure of the mixing cylinder of the utility model Figure 1 ;

[0039] Figure 3 It is a schematic diagram of each chamber in the mixing cylinder of the utility model;

[0040] Figure 4 It is a schematic diagram of the internal structure of the mixing cylinder of the utility model;Figure 2 .

[0041] In the diagram: 1. Mixing cylinder; 2. Feed pipe; 3. Installation chamber;

[0042] 4. Pretreatment chamber; 41. Pretreatment outlet;

[0043] 5. Premixing chamber; 51. Premixing inlet;

[0044] 6. Main mixing chamber; 61. Premixed discharge port;

[0045] 7. Main drive component; 71. Drive motor; 72. First hybrid shaft; 73. Second hybrid shaft; 74. Drive gear; 75. Drive gear;

[0046] 8. Premixing assembly; 81. First premixing roller; 82. Second premixing roller;

[0047] 9. Main mixing assembly; 91. First main mixing roller; 92. Second main mixing roller;

[0048] 10. Pretreatment assembly; 1001. Pretreatment roller; 1002. Grinding sleeve; 1003. Pretreatment shaft; 1004. Grinding groove; 1005. Synchronous belt;

[0049] 11. Agitation assembly; 1101. First agitator roller; 1102. Second agitator roller; 1103. Agitator drive gear one; 1104. Agitator drive gear two; 1105. Agitator driven gear one; 1106. Agitator driven gear two;

[0050] 12. Discharge pipe. Detailed Implementation

[0051] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0052] Example 1: As Figures 1-4 As shown, a PFA filament raw material mixing device includes:

[0053] Mixing cylinder 1, which is equipped with two feed pipes 2 and one discharge pipe 12;

[0054] The mixing cylinder 1 has two pretreatment chambers 4 corresponding to the feed pipe 2. The mixing cylinder 1 has a premixing chamber 5 and a main mixing chamber 6. Both pretreatment chambers 4 are connected to the premixing chamber 5, and the premixing chamber 5 is connected to the main mixing chamber 6.

[0055] Two pretreatment components 10 are placed in their respective pretreatment chambers 4.

[0056] a pre-mixing assembly 8 located in the pre-mixing chamber 5;

[0057] a main mixing assembly 9 located in the main mixing chamber 6;

[0058] a main driving component 7 located in a mounting chamber 3 in the mixing cylinder 1;

[0059] The pre-mixing assembly 8 is connected with the main mixing assembly 9, and the main driving component 7 is connected with the pre-mixing assembly 8 to drive the pre-mixing assembly 8 to rotate in the pre-mixing chamber 5 to preliminarily mix the material, and the main mixing assembly 9 rotates in the main mixing chamber 6 to mix the material.

[0060] A transmission assembly is arranged between the pre-mixing assembly 8 and the pre-treatment assembly 10, and the transmission assembly drives the pre-treatment assembly 10 to rotate in the pre-treatment chamber 4, and the pre-treatment assembly 10 is suitable for grinding the material entering from the feeding pipe 2 and then sending the material into the pre-mixing chamber 5.

[0061] As shown in Figure 2 , the pre-mixing assembly 8 includes a first pre-mixing roller 81 and a second pre-mixing roller 82, and the first pre-mixing roller 81 and the second pre-mixing roller 82 are both rotatably installed in the pre-mixing chamber 5.

[0062] The first pre-mixing roller 81 is fixedly sleeved with a first mixing shaft 72, the second pre-mixing roller 82 is fixedly sleeved with a second mixing shaft 73, and the main driving component 7 is connected with the first mixing shaft 72 and the second mixing shaft 73 to drive the first mixing shaft 72 and the second mixing shaft 73 to rotate towards each other, thereby driving the first pre-mixing roller 81 and the second pre-mixing roller 82 to rotate towards each other.

[0063] As shown in Figures 2-3 , the main driving component 7 includes a driving motor 71, a driving driving gear 74, and a driving driven gear 75.

[0064] The driving driving gear 74 is fixedly sleeved on the outside of the first mixing shaft 72, the driving driven gear 75 is fixedly sleeved on the outside of the second mixing shaft 73, the driving driving gear 74 and the driving driven gear 75 are engaged, and the driving motor 71 is connected with the first mixing shaft 72 to drive the first mixing shaft 72 to rotate, thereby driving the second mixing shaft 73 to rotate towards the first mixing shaft 72.

[0065] As shown in Figure 2 , the main mixing assembly 9 includes a first main mixing roller 91 and a second main mixing roller 92.

[0066] The first mixing shaft 72 and the second mixing shaft 73 pass through the premixing chamber 5 and extend into the main mixing chamber 6. The first main mixing roller 91 is fixedly sleeved on the outside of the first mixing shaft 72 located in the main mixing chamber 6, and the second main mixing roller 92 is fixedly sleeved on the outside of the second mixing shaft 73 located in the main mixing chamber 6.

[0067] The premixing chamber 5 is provided with a premixing outlet 61, and the premixing chamber 5 is connected to the main mixing chamber 6 through the premixing outlet 61.

[0068] like Figures 3-4 As shown, the pretreatment component 10 is a pretreatment roller 1001, which is rotatably installed in the pretreatment chamber 4;

[0069] The transmission assembly is adapted to connect one of the pretreatment rollers 1001 to the first mixing shaft 72, thereby driving the pretreatment roller 1001 to rotate in the corresponding pretreatment chamber 4.

[0070] The transmission assembly is adapted to connect another pretreatment roller 1001 and the second mixing shaft 73, thereby driving the pretreatment roller 1001 to rotate in the corresponding pretreatment chamber 4;

[0071] Both pretreatment chambers 4 are provided with pretreatment outlets 41, and the premixing chamber 5 is provided with premixing inlets 51 corresponding to the two pretreatment outlets 41. The pretreatment outlets 41 are connected to the corresponding premixing inlets 51, and the premixing inlets 51 are connected to the premixing chamber 5.

[0072] like Figures 3-4 As shown, the transmission assembly consists of two pre-processing shafts 1003 and two synchronous belts 1005. One of the pre-processing shafts 1003 is connected to one of the pre-processing rollers 1001, and one of the synchronous belts 1005 is sleeved on the outside of the first mixing shaft 72 and the pre-processing roller 1001 through a synchronous pulley.

[0073] Another pretreatment shaft 1003 is connected to another pretreatment roller 1001, and another synchronous belt 1005 is fitted together with a synchronous pulley on the outside of the second mixing shaft 73 and the pretreatment roller 1001.

[0074] like Figures 3-4 As shown, the pretreatment chamber 4 is provided with several annular grinding grooves 1004 arranged at intervals. The pretreatment roller 1001 is fixedly sleeved with several grinding sleeves 1002 corresponding to the grinding grooves 1004. There is a gap between the grinding grooves 1004 and the grinding sleeves 1002. The grinding grooves 1004 are connected to the premixed feed inlet 51.

[0075] The working principle of this embodiment is as follows:

[0076] Two feeding pipes 2 are arranged on the upper part of the mixing cylinder 1, and the two feeding pipes 2 are respectively used for feeding different raw materials which need to be mixed. In order to ensure the stability of the raw materials after mixing, a loss-in-weight scale can be arranged on the two feeding pipes 2 to control the proportion of different raw materials entering.

[0077] Different materials enter the pretreatment chamber 4 after entering the feeding pipe 2, and then enter the premixing chamber 5 through the pretreatment chamber 4. The premixing chamber 5 is narrower than the main mixing chamber 6, and different materials can be mixed more quickly in the premixing chamber 5.

[0078] When the different materials are mixed in the premixing chamber 5, the driving motor 71 is started, the first mixing shaft 72 is driven to rotate by the driving motor 71, the first mixing shaft 72 drives the driving driving gear 74 to rotate, the driving driving gear 74 and the driving driven gear 75 are engaged, so as to drive the second mixing shaft 73 to rotate, and the first mixing shaft 72 and the second mixing shaft 73 rotate towards each other, so as to realize the opposite rotation of the first premixing roller 81 and the second premixing roller 82. The first premixing roller 81 and the second premixing roller 82 rotate in the premixing chamber 5, and the different materials in the premixing chamber 5 are quickly premixed for a short time.

[0079] After the premixing, the materials enter the main mixing chamber 6 through the premixing discharge port 61, and the first main mixing roller 91 and the second main mixing roller 92 driven by the first mixing shaft 72 and the second mixing shaft 73 also rotate towards each other in the main mixing chamber 6. The two main mixing rollers rotate in the main mixing chamber 6 and mix the premixed materials for a long time.

[0080] It should be noted that in special cases, PFA needs to be mixed with other materials or added to paint and adhesive, and PFA raw materials need to be crushed or ground to obtain finer particles or powders. In addition, if the particle size of the raw material is too large or the shape is irregular, it may also need to be crushed to meet the feeding requirements of the drawing machine.

[0081] Therefore, when different materials enter the respective pretreatment chamber 4, the materials will be crushed by the pretreatment rollers 1001 in the pretreatment chamber 4 before entering the pretreatment chamber 4. The two pretreatment rollers 1001 are provided with pretreatment shafts 1003. One of the pretreatment shafts 1003 is connected to the first mixing shaft 72 through a synchronous belt 1005, and the other pretreatment shaft 1003 is also connected to the second mixing shaft 73 through the synchronous belt 1005, so as to realize the rotation of the two pretreatment rollers 1001. It should be noted that different pretreatment shafts 1003 can be connected to any one of the mixing shafts through the synchronous belt 1005, and the corresponding pretreatment roller 1001 can be driven to rotate.

[0082] The material entering the pre-treatment chamber 4 is extruded and crushed by the rotating pre-treatment roller 1001 and the inner wall of the pre-treatment chamber 4, and then enters the pre-mixing chamber 5 for pre-mixing treatment;

[0083] In addition, a plurality of grinding grooves 1004 can be formed on the inner wall of the pre-treatment chamber 4, and a grinding sleeve 1002 corresponding to the grinding grooves 1004 is arranged outside the pre-treatment roller 1001. There is a gap between the grinding sleeve 1002 and the grinding grooves 1004. The material entering the pre-treatment chamber 4 flows into the gap between the grinding sleeve 1002 and the grinding grooves 1004. The grinding sleeve 1002 is driven to rotate by the pre-treatment roller 1001. The grinding sleeve 1002 grinds and crushes the material in the gap. The crushed material is then fed into the pre-mixing chamber 5 for pre-mixing treatment.

[0084] Embodiment Two: As shown in Figure 2 , Figure 4 The embodiment further includes the following structure based on Embodiment One: The mixing cylinder 1 further includes a stirring assembly 11, which includes a first stirring roller 1101 and a second stirring roller 1102.

[0085] A linkage mechanism one is arranged between the first stirring roller 1101 and the first mixing shaft 72, and is adapted to drive the first mixing shaft 72 and the first stirring roller 1101 to rotate towards each other.

[0086] A linkage mechanism two is arranged between the second stirring roller 1102 and the second mixing shaft 73, and is adapted to drive the second mixing shaft 73 and the second stirring roller 1102 to rotate towards each other.

[0087] As shown in Figure 2 , Figure 4 The mixing cylinder 1 is provided with a cavity, and the linkage mechanism one and the linkage mechanism two are located in the cavity. The first mixing shaft 72 and the second mixing shaft 73 extend into and rotate in the cavity.

[0088] The linkage mechanism one includes a stirring driving gear one 1103 and a stirring driven gear one 1105. The stirring driving gear one 1103 is fixedly sleeved on the outside of the first mixing shaft 72 located in the cavity. The stirring driven gear one 1105 is fixedly sleeved on the outside of a connecting shaft rotating at the bottom of the first stirring roller 1101 and located in the cavity. The stirring driving gear one 1103 and the stirring driven gear one 1105 are engaged.

[0089] The linkage mechanism two comprises a stirring driving gear two 1104 and a stirring driven gear two 1106. The stirring driving gear two 1104 is fixedly sleeved on the outside of the second mixing shaft 73 located in the cavity, and the stirring driven gear two 1106 is fixedly sleeved on the outside of the connecting shaft rotatably arranged in the cavity at the bottom of the second stirring roller 1102. The stirring driving gear two 1104 and the stirring driven gear two 1106 are engaged.

[0090] The working principle of the embodiment is as follows:

[0091] After being crushed and premixed, the materials finally enter the main mixing chamber 6, and the materials are mixed and stirred in the main mixing chamber 6 through the opposite rotation of the first main mixing roller 91 and the second main mixing roller 92.

[0092] On this basis, the first stirring roller 1101 and the second stirring roller 1102 are further arranged. The first stirring roller 1101 corresponds to the first mixing shaft 72. The first mixing shaft 72 drives the stirring driving gear one 1103 to rotate. The stirring driving gear one 1103 drives the first stirring roller 1101 to rotate through the engagement with the stirring driven gear one 1105.

[0093] The second stirring roller 1102 corresponds to the second mixing shaft 73. The second mixing shaft 73 drives the stirring driving gear two 1104 to rotate. The stirring driving gear two 1104 drives the second stirring roller 1102 to rotate through the engagement with the stirring driven gear two 1106.

[0094] The overall effect is that the first main mixing roller 91 and the second main mixing roller 92 rotate towards each other, the first stirring roller 1101 and the first main mixing roller 91 rotate towards each other, and the second stirring roller 1102 and the second main mixing roller 92 rotate towards each other. Since the directions of stirring are different, the materials are driven to mix in various trajectories, thereby improving the mixing effect and making the mixing more uniform.

[0095] It should be noted that the two stirring rollers and the two main mixing rollers have different rotation speeds due to the different sizes of the driving gears, so that the mixing direction of the stirred materials is more complex than single mixing, thereby improving the mixing effect. In addition, the stirring driving gear one 1103 and the stirring driven gear one 1105 form a group, the stirring driving gear two 1104 and the stirring driven gear two 1106 form a group, and the two groups of gears have different setting heights, so as not to cause incorrect engagement and interference. In addition, the mixing blades arranged on the outer circumferential surfaces of the two stirring rollers and the two main mixing rollers are not limited to those shown in the figure, and can stir the materials without interfering with each other.

[0096] The above-described specific embodiments further specifically describe the technical problems, technical solutions and beneficial effects solved by the present application, and it should be understood that the above-described specific embodiments are merely specific embodiments of the present application and are not used to limit the present application, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A PFA filament raw material mixing device, characterized in that: The utility model relates to a kind of double-mixing barrel and its main drive component, including: Mixing cylinder (1), it is provided with two feed pipes (2) and a discharge pipe (12) on the mixing cylinder (1); Two pre-processing chambers (4) corresponding with the feed pipe (2) are opened in the mixing cylinder (1), pre-mixing chamber (5) and main mixing chamber (6) are opened in the mixing cylinder (1), two the pre-processing chamber (4) is communicated with the pre-mixing chamber (5), the pre-mixing chamber (5) is communicated with the main mixing chamber (6); Two pre-processing assemblies (10), two the pre-processing assembly (10) is placed in corresponding the pre-processing chamber (4) respectively; Pre-mixing assembly (8), the pre-mixing assembly (8) is located in the pre-mixing chamber (5); Main mixing assembly (9), the main mixing assembly (9) is located in the main mixing chamber (6); Main drive component (7), the mixing cylinder (1) is opened with installation chamber (3), and the main drive component (7) is located in the installation chamber (3); The pre-mixing assembly (8) is connected with the main mixing assembly (9), the main drive component (7) is connected with the pre-mixing assembly (8) to be suitable for driving the pre-mixing assembly (8) rotates in the pre-mixing chamber (5) to preliminary mix material, the main mixing assembly (9) rotates in the main mixing chamber (6) to mix material; Transmission assembly is arranged between the pre-mixing assembly (8) and the pre-processing assembly (10), the transmission assembly is suitable for driving the pre-processing assembly (10) rotates in the pre-processing chamber (4), and the pre-processing assembly (10) is suitable for grinding after entering the material in the feed pipe (2) and is sent into the pre-mixing chamber (5).

2. The PFA filament raw material mixing apparatus according to claim 1, wherein The pre-mixing assembly (8) includes first pre-mixing roller (81) and second pre-mixing roller (82), and the first pre-mixing roller (81) and the second pre-mixing roller (82) are rotatably installed in the pre-mixing chamber (5); The first mixing shaft (72) is fixedly nested in the first pre-mixing roller (81), the second mixing shaft (73) is fixedly nested in the second pre-mixing roller (82), and the main drive component (7) is connected with the first mixing shaft (72) and the second mixing shaft (73) to be suitable for driving the first mixing shaft (72) and the second mixing shaft (73) rotate towards each other, and then drive the first pre-mixing roller (81) and the second pre-mixing roller (82) rotate towards each other.

3. The PFA filament raw material mixing apparatus according to claim 2, wherein The main drive component (7) includes drive motor (71), drive driving gear (74) and drive driven gear (75); The drive driving gear (74) is fixedly sleeved outside the first mixing shaft (72), the drive driven gear (75) is fixedly sleeved outside the second mixing shaft (73), the drive driven gear (75) and the drive driving gear (74) are engaged, and the drive motor (71) is connected with the first mixing shaft (72) to be suitable for driving the first mixing shaft (72) rotates, and then drive the second mixing shaft (73) and the first mixing shaft (72) rotate towards each other.

4. The PFA filament raw material mixing apparatus according to claim 2 or 3, characterized by The main mixing assembly (9) comprises a first main mixing roller (91) and a second main mixing roller (92); The first mixing shaft (72) and the second mixing shaft (73) pass through the premixing chamber (5) and extend into the main mixing chamber (6), the first main mixing roller (91) is fixedly sleeved outside the first mixing shaft (72) located in the main mixing chamber (6), and the second main mixing roller (92) is fixedly sleeved outside the second mixing shaft (73) located in the main mixing chamber (6); The premixing chamber (5) is provided with a premixing discharge port (61), and the premixing chamber (5) communicates with the main mixing chamber (6) through the premixing discharge port (61).

5. The PFA filament raw material mixing apparatus according to claim 4, wherein The pretreatment assembly (10) is a pretreatment roller (1001), and the pretreatment roller (1001) is rotatably installed in the pretreatment chamber (4); The transmission assembly is adapted to connect one of the pretreatment rollers (1001) with the first mixing shaft (72), so as to drive the pretreatment roller (1001) to rotate in the corresponding pretreatment chamber (4); The transmission assembly is adapted to connect the other pretreatment roller (1001) with the second mixing shaft (73), so as to drive the pretreatment roller (1001) to rotate in the corresponding pretreatment chamber (4); The two pretreatment chambers (4) are each provided with a pretreatment discharge port (41), and the premixing chamber (5) is provided with a premixing feeding port (51) corresponding to the two pretreatment discharge ports (41), the pretreatment discharge port (41) communicates with the corresponding premixing feeding port (51), and the premixing feeding port (51) communicates with the premixing chamber (5).

6. The PFA filament raw material mixing apparatus according to claim 5, wherein The transmission assembly is two pretreatment shafts (1003) and two synchronous belts (1005), one of the pretreatment shafts (1003) is connected with the one of the pretreatment rollers (1001), and one of the synchronous belts (1005) is commonly sleeved outside the first mixing shaft (72) and the pretreatment roller (1001) through synchronous wheels; The other pretreatment shaft (1003) is connected with the other pretreatment roller (1001), and the other synchronous belt (1005) is commonly sleeved outside the second mixing shaft (73) and the pretreatment roller (1001) through synchronous wheels.

7. The PFA filament raw material mixing apparatus according to claim 5 or 6, characterized by The pretreatment chamber (4) is provided with a plurality of annular grinding grooves (1004) arranged at intervals, the outer portion of the pretreatment roller (1001) is fixedly sleeved with a plurality of grinding sleeves (1002) corresponding to the grinding grooves (1004), there is a gap between the grinding grooves (1004) and the grinding sleeves (1002), and the grinding grooves (1004) communicate with the premixing feeding port (51).

8. The PFA filament raw material mixing apparatus according to claim 7, wherein The mixing barrel (1) is also provided with an agitating assembly (11), and the agitating assembly (11) comprises a first agitating roller (1101) and a second agitating roller (1102); The first stirring roller (1101) and the first mixing shaft (72) are provided with linkage mechanism one, and the linkage mechanism one is suitable for driving the first mixing shaft (72) and the first stirring roller (1101) to rotate towards each other; The second stirring roller (1102) and the second mixing shaft (73) are provided with linkage mechanism two, and the linkage mechanism two is suitable for driving the second mixing shaft (73) and the second stirring roller (1102) to rotate towards each other.

9. The PFA filament raw material mixing apparatus according to claim 8, wherein The mixing barrel (1) is provided with a cavity, the linkage mechanism one and the linkage mechanism two are located in the cavity, and the first mixing shaft (72) and the second mixing shaft (73) are located in the cavity and rotate. The linkage mechanism one comprises a stirring driving gear one (1103) and a stirring driven gear one (1105), the stirring driving gear one (1103) is fixedly sleeved on the outside of the first mixing shaft (72) located in the cavity, the stirring driven gear one (1105) is fixedly sleeved on the outside of the connecting shaft rotating in the cavity at the bottom of the first stirring roller (1101), and the stirring driving gear one (1103) and the stirring driven gear one (1105) are engaged. The linkage mechanism two comprises a stirring driving gear two (1104) and a stirring driven gear two (1106), the stirring driving gear two (1104) is fixedly sleeved on the outside of the second mixing shaft (73) located in the cavity, the stirring driven gear two (1106) is fixedly sleeved on the outside of the connecting shaft rotating in the cavity at the bottom of the second stirring roller (1102), and the stirring driving gear two (1104) and the stirring driven gear two (1106) are engaged.

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