A fluorocarbon coating feed device

Abstract

The utility model relates to feeding device technical field, and disclose a kind of fluorocarbon coating feeding device, including mixed cylinder support frame, the top fixed mounting of mixed cylinder support frame has mixed stirring cylinder. By being provided with feeding storage hopper, compartment board, the separation of cooperation separating plate, ensure that two raw materials are always in independent state before feeding, then, hydraulic adjusting rod can independently control the lifting of corresponding control quantity stopper plate, and then adjust the opening of separating plate top control quantity discharge port, make two raw materials with set speed synchronous drop, cooperation conveying helical plate of rotating shaft bottom, the raw material falling is stably transported to mixed stirring cylinder, avoid raw material to appear local accumulation due to gravity impact, ensure that two raw materials enter mixed cavity according to proportion evenly, simultaneously, control quantity side scraper can completely scrape the raw material adhered in storage hopper inner wall, avoid raw material waste, reach the effect of improving product quality stability.

Description

Technical Field

[0001] This utility model relates to the technical field of feeding devices, specifically a fluorocarbon coating feeding device. Background Technology

[0002] Fluorocarbon coatings are special coatings made primarily of fluoropolymers (such as polyvinylidene fluoride (PVDF) and fluoroolefin-vinyl ether copolymer (FEVE)) as the film-forming substance, combined with pigments, additives, and solvents. Due to their excellent weather resistance (over 20 years), chemical corrosion resistance, and UV resistance, they are widely used in high-end building curtain walls, bridge steel structures, aerospace, and new energy equipment. Their production process requires extremely high precision in raw material proportioning and mixing uniformity. However, in the traditional fluorocarbon coating processing, the raw material feeding and mixing stages have long suffered from technical shortcomings, making it difficult to meet the stringent requirements of modern production. The specific background technology and industry pain points are as follows: Traditional fluorocarbon coatings often use a single hopper to store multiple raw materials, or separate hoppers without proper isolation or protection. The core raw materials of fluorocarbon coatings (such as fluoropolymers, colorants, and curing agents) are chemically sensitive. Pre-reactions between some raw materials (such as isocyanate curing agents) and the resin can lead to increased viscosity and curing failure. Furthermore, prolonged mixing of colorants and base materials can cause pigment sedimentation, affecting the color consistency of the coating. In addition, single-hopper storage increases the risk of cross-contamination. For example, metallic pigment particles mixed into the resin can reduce the coating's insulation performance, making it difficult to meet the requirements of special applications such as electronic device casings. Traditional feeding methods rely on manual weighing before pouring into the mixing drum, or manual control of the feed rate via simple valves, resulting in the inability to ensure that the two raw materials enter the mixing drum in the correct proportions. Moreover, traditional fluorocarbon coating mixing often uses single-shaft paddle agitators or ordinary spiral agitators, which only achieve macroscopic mixing of the raw materials and cannot solve the microscopic mixing challenges. For example, pigment particles (typically 10-100nm in size) in color pastes are prone to agglomerate into micron-sized clumps. A single stirring method cannot effectively disperse these clumps, resulting in "color spots" and "streaks" in the coating. If the curing agent and resin are not mixed sufficiently, local uncured areas will appear, reducing the corrosion resistance and adhesion of the coating. Therefore, it is necessary to design a fluorocarbon coating feeding device. Utility Model Content

[0003] The purpose of this invention is to provide a fluorocarbon coating feeding device that solves the technical problems of insufficient metering accuracy and uneven mixing leading to residual bubbles, thereby improving product quality stability and increasing production efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fluorocarbon coating feeding device, comprising a mixing cylinder support frame, a mixing and stirring cylinder fixedly installed on the top of the mixing cylinder support frame, a sealing cover installed on the top of the mixing and stirring cylinder via a mounting bolt, a feeding port opened on the top of the sealing cover, a sealing gasket fixedly installed on the top of the feeding port, a discharge pipe connected to the bottom of the mixing and stirring cylinder, and a control adjustment box installed in front of the mixing cylinder support frame; a feeding and mixing assembly, the feeding and mixing assembly being disposed inside and above the mixing and stirring cylinder; the feeding and mixing assembly comprising: a feeding part, the feeding part being disposed above the mixing and stirring cylinder; and a mixing part, the mixing part being disposed inside and above the mixing and stirring cylinder, and the mixing part being disposed on one side and below the feeding part.

[0005] Preferably, the feeding part includes: a feeding storage hopper, which is fixedly installed on the top of the mixing drum, and the bottom of the feeding storage hopper is connected to the inside of the feeding port; a partition plate is fixedly installed on the inner wall of the feeding storage hopper, and the partition plate is used to separate two independent chambers; a separation plate is fixedly installed on the bottom of the partition plate; and a controlled discharge port is opened on the top of the separation plate, and there are two sets of them, which are symmetrically arranged.

[0006] Preferably, a top horizontal plate is fixedly installed on the top of the feeding storage hopper, and a hydraulic adjusting rod is fixedly installed on the bottom of the top horizontal plate. There are two sets of such rods. A volume control blocking plate is fixedly installed on the bottom of the hydraulic adjusting rod, and the volume control blocking plate is compatible with the volume control discharge port.

[0007] Preferably, a small motor is installed above the top horizontal plate through a motor cover, and the motor cover is fixedly installed on the top of the top horizontal plate. The output end of the small motor is provided with a rotating shaft, which moves through the partition plate and the separation plate and extends to the bottom of the feeding storage hopper.

[0008] Preferably, a control scraper is fixedly installed on the outer wall of the rotating shaft via a connecting arm, and the control scraper is adapted to the inner wall of the feeding storage hopper and is located below the separation plate. A conveying spiral plate is provided below the control scraper, and the conveying spiral plate is sleeved on the bottom of the rotating shaft and located inside the feeding port.

[0009] Preferably, the mixing section includes: a drive motor, which is fixedly mounted on the top of the sealing cover via a support frame; a vacuum pump, which is mounted on one side of the mixing cylinder support frame via a mounting bracket; a mixing stirring rod is mounted on the output end of the drive motor via a coupling, and the mixing stirring rod is located inside the mixing cylinder, with mixing spiral blades sleeved on the outer wall of the mixing stirring rod, and a mounting ring fixedly mounted on the bottom of the mixing stirring rod.

[0010] Preferably, the outer wall of the mounting ring is fixedly mounted with two sets of crushing and mixing rods arranged symmetrically, and small pointed tips are fixedly mounted at equal intervals on the outer wall of the crushing and mixing rods.

[0011] Preferably, the vacuum pump is connected to an adsorption gas pipe that extends into the interior of the mixing drum. A control valve is fitted on the outer wall of the adsorption gas pipe. The other end of the adsorption gas pipe is connected to an annular tube that is fixedly installed on the inner wall of the mixing drum and positioned above the crushing and mixing rod. Adsorption holes are equidistantly opened on the inner circumference of the annular tube.

[0012] This invention provides a fluorocarbon coating feeding device. It has the following beneficial effects: (1) This utility model, by setting up a feeding storage hopper and a partition plate, combined with the separation plate, ensures that the two raw materials are always in an independent state before feeding, thus ensuring the purity of the raw materials and the stability of the formula. Then, the hydraulic adjustment rod can independently control the lifting and lowering of the corresponding control plug plate, thereby adjusting the opening of the control discharge port at the top of the separation plate, so that the two raw materials fall synchronously at a set speed. Combined with the conveying spiral plate at the bottom of the rotating shaft, the falling raw materials can be smoothly conveyed to the mixing drum, avoiding local accumulation of raw materials due to gravity impact, ensuring that the two raw materials enter the mixing chamber in proportion and evenly. At the same time, the control side scraper can completely scrape off the raw materials adhering to the inner wall of the storage hopper, avoiding raw material residue and waste, thus achieving the effect of improving the stability of product quality.

[0013] (2) This utility model is equipped with a drive motor to drive the mixing and stirring rod to rotate. The mixing spiral blades use a spiral structure to flip the raw materials up and down and push them laterally, quickly breaking up the material layers and achieving preliminary mixing. With the high-speed rotation of the crushing mixing rod and the small pointed tip, it can puncture and crush the raw material clumps formed in the preliminary mixing, breaking the clumps into fine particles. Then, through turbulent motion, the raw materials are fully integrated at the micro level. At the same time, the vacuum pump, adsorption gas pipe, and ring pipe form a negative pressure cavity inside the mixing and stirring cylinder, which facilitates the expansion and floating of bubbles to be extracted by the vacuum pump, thereby improving the production mixing efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of a fluorocarbon coating feeding device according to the present invention; Figure 3 This is a top view of a fluorocarbon coating feeding device according to the present invention; Figure 4 This is a side view of the feeding section of a fluorocarbon coating feeding device according to this utility model.

[0015] In the diagram: 1 Mixing cylinder support frame, 2 Mixing and stirring cylinder, 3 Sealing cover, 4 Feed port, 41 Sealing gasket, 5 Discharge pipe, 6 Control and adjustment box, 7 Feeding and mixing assembly, 71 Feeding part, 711 Feeding storage hopper, 712 Divider plate, 713 Separation plate, 714 Controlled discharge port, 715 Top horizontal plate, 716 Hydraulic adjusting rod, 717 Controlled discharge blocking plate, 718 Small motor, 719 Rotating shaft, 7110 Controlled side scraper, 7111 Conveying spiral plate, 72 Mixing part, 721 Drive motor, 722 Mixing and stirring rod, 723 Mixing spiral blade, 724 Mounting ring, 725 Crushing and mixing rod, 726 Small pointed tip, 727 Vacuum pump, 728 Adsorption gas pipe, 729 Control valve, 7210 Ring pipe, 7211 Adsorption hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Example

[0018] Based on the existing problems of insufficient metering accuracy and uneven mixing leading to residual air bubbles, a preferred embodiment of the fluorocarbon coating feeding device provided by this utility model is as follows: Figure 1-4 As shown: A fluorocarbon coating feeding device includes a mixing cylinder support frame 1, a mixing drum 2 fixedly installed on the top of the mixing cylinder support frame 1, a sealing cover 3 installed on the top of the mixing drum 2 via a mounting bolt, a feeding port 4 opened on the top of the sealing cover 3, a sealing gasket 41 fixedly installed on the top of the feeding port 4, a discharge pipe 5 connected to the bottom of the mixing drum 2, a control adjustment box 6 installed in front of the mixing cylinder support frame 1; and a feeding and mixing assembly 7, which is located inside and above the mixing drum 2. The feeding and mixing assembly 7 includes: a feeding part 71, which is located above the mixing drum 2; and a mixing part 72, which is located inside and above the mixing drum 2, and is located on one side and below the feeding part 71.

[0019] The feeding part 71 includes: a feeding storage hopper 711, which is fixedly installed on the top of the mixing drum 2, and the bottom of the feeding storage hopper 711 is connected to the inside of the feeding port 4; a partition plate 712 is fixedly installed on the inner wall of the feeding storage hopper 711, and the partition plate 712 is used to separate two independent chambers; a separation plate 713 is fixedly installed on the bottom of the partition plate 712; and a controlled discharge port 714 is opened on the top of the separation plate 713, and there are two sets of them, which are symmetrically arranged.

[0020] A top horizontal plate 715 is fixedly installed on the top of the feeding storage hopper 711. A hydraulic adjusting rod 716 is fixedly installed at the bottom of the top horizontal plate 715, and there are two sets of them. A volume control blocking plate 717 is fixedly installed at the bottom of the hydraulic adjusting rod 716, and the volume control blocking plate 717 is compatible with the volume control discharge port 714.

[0021] A small motor 718 is installed above the top horizontal plate 715 through a motor cover, and the motor cover is fixedly installed on the top of the top horizontal plate 715. The output end of the small motor 718 is provided with a rotating shaft 719, and the rotating shaft 719 moves through the partition plate 712 and the separation plate 713, and extends to the bottom of the feeding storage hopper 711.

[0022] A control scraper 7110 is fixedly installed on the outer wall of the rotating shaft 719 via a connecting arm. The control scraper 7110 is adapted to the inner wall of the feeding storage hopper 711 and is located below the separating plate 713. A conveying spiral plate 7111 is located below the control scraper 7110 and is sleeved on the bottom of the rotating shaft 719 and located inside the feeding port 4.

[0023] Furthermore, this embodiment, by setting up a feeding storage hopper 711 and a partition plate 712, combined with the separating effect of the separation plate 713, ensures that the two raw materials are always in an independent state before feeding, thus ensuring the purity of the raw materials and the stability of the formula. Then, the hydraulic adjusting rod 716 can independently control the lifting and lowering of the corresponding quantity control blocking plate 717, thereby adjusting the opening of the quantity control discharge port 714 at the top of the separation plate 713, so that the two raw materials fall synchronously at a set speed. With the help of the conveying spiral plate 7111 at the bottom of the rotating shaft 719, the falling raw materials can be smoothly conveyed to the mixing drum 2, avoiding "local accumulation" of raw materials due to gravity impact, and ensuring that the two raw materials enter the mixing chamber in proportion and evenly. At the same time, the quantity control side scraper 7110 can completely scrape off the raw materials adhering to the inner wall of the storage hopper, avoiding the waste of raw material residue. Example

[0024] Based on Embodiment 1, a preferred embodiment of the fluorocarbon coating feeding device provided by this utility model is as follows: Figure 1-4As shown: The mixing section 72 includes: a drive motor 721, which is fixedly mounted on the top of the sealing cover 3 via a support frame; a vacuum pump 727, which is mounted on one side of the mixing cylinder support frame 1 via a mounting bracket; a mixing stirring rod 722 is mounted on the output end of the drive motor 721 via a coupling, and the mixing stirring rod 722 is located inside the mixing cylinder 2. The outer wall of the mixing stirring rod 722 is fitted with a mixing spiral blade 723, and an installation ring 724 is fixedly mounted on the bottom of the mixing stirring rod 722.

[0025] The outer wall of the mounting ring 724 is fixedly installed with crushing and mixing rods 725, and there are two sets in total, arranged symmetrically. Small pointed tips 726 are fixedly installed at equal intervals on the outer wall of the crushing and mixing rods 725.

[0026] The vacuum pump 727 is connected to an adsorption pipe 728, which extends into the mixing drum 2. A control valve 729 is fitted on the outer wall of the adsorption pipe 728. The other end of the adsorption pipe 728 is connected to an annular pipe 7210, which is fixedly installed on the inner wall of the mixing drum 2 and positioned above the crushing and mixing rod 725. Adsorption holes 7211 are equidistantly opened on the inner side wall of the annular pipe 7210.

[0027] Furthermore, in this embodiment, a drive motor 721 drives the mixing rod 722 to rotate, and the mixing spiral blade 723 uses a spiral structure to tumble and push the raw materials horizontally, quickly breaking up the material stratification and achieving preliminary mixing. With the high-speed rotation of the crushing mixing rod 725 and the small tip 726, the raw material clumps formed in the preliminary mixing can be pierced and broken, breaking the clumps into fine particles. Then, through turbulent motion, the raw materials are fully integrated at the microscopic level. At the same time, the vacuum pump 727, the adsorption pipe 728, and the annular pipe 7210 form a negative pressure cavity inside the mixing drum 2, which facilitates the expansion and floating of bubbles, which are then extracted by the vacuum pump 727.

[0028] During use, the operator first checks the overall condition of the equipment, ensuring that the mixing drum support frame 1 firmly supports the mixing drum 2, the sealing cover 3 is sealed to the top of the mixing drum 2 by the mounting bolt, and the sealing gasket 41 at the top of the feeding port 4 is undamaged. Then, according to the fluorocarbon coating formula, two different raw materials, such as resin, pigment or additives, are poured into the feeding storage hopper 711 of the feeding part 71. The partition plate 712 on the inner wall of the feeding storage hopper 711 separates them into two independent chambers, which can store the two raw materials separately to avoid premature mixing of the raw materials. At the same time, it is checked whether the flow control plug plate 717 is tightly fitted with the flow control discharge port 714 at the top of the separation plate 713 to ensure that the raw materials do not leak in the initial state. Through the control and adjustment box 6 in front of the mixing cylinder support frame 1, key parameters are set according to the formula ratio and mixing uniformity requirements of the fluorocarbon coating. These parameters include the extension and retraction of the hydraulic adjustment rod 716 to control the opening of the feed port 714, the rotation speed of the small motor 718 to control the raw material conveying speed, the rotation speed of the drive motor 721 to control the mixing and stirring intensity, the adsorption power of the vacuum pump 727, and the working sequence of each component. At the same time, the vacuum pump 727 is started for preheating, and the ventilation status of the adsorption gas pipe 728 and the annular pipe 7210 is checked to prepare for subsequent impurity adsorption.

[0029] Furthermore, by controlling the adjustment box 6, the two sets of hydraulic adjusting rods 716 at the bottom of the top horizontal plate 715 are activated. The hydraulic adjusting rods 716 extend or retract upwards or downwards according to the set parameters, driving the bottom volume control blocking plate 717 to move synchronously. The volume control blocking plate 717 is adapted to the volume control discharge port 714. When the hydraulic adjusting rod 716 retracts, the volume control blocking plate 717 moves upwards, and the volume control discharge port 714 opens. The opening degree is precisely controlled by the extension and retraction of the hydraulic adjusting rod 716. The larger the opening degree, the faster the raw material falls. According to the formula ratio of the two raw materials, the extension and retraction of the two sets of hydraulic adjusting rods 716 are adjusted respectively to ensure that the two raw materials fall synchronously in the set ratio, avoiding imbalance that affects the coating quality. The small motor 718 in the motor cover above the top horizontal plate 715 is activated. The output end of the small motor 718 drives the rotating shaft 719 to rotate. The rotating shaft 719 moves through the partition plate 712 and the separation plate 713 and extends to the bottom of the feeding storage hopper 711. On the one hand, the control scraper 7110, which is fixed to the outer wall of the rotating shaft 719 by the connecting arm, rotates synchronously with the rotating shaft. The control scraper 7110 is adapted to the inner wall of the feeding storage hopper 711, which can scrape off the raw materials adhering to the inner wall of the storage hopper, avoiding the waste of raw materials, and at the same time assisting in pushing the raw materials to move towards the control discharge port 714. On the other hand, the conveying spiral plate 7111, which is sleeved at the bottom of the rotating shaft 719, rotates inside the feeding port 4, which further conveys the raw materials falling through the control discharge port 714 to the inside of the mixing drum 2, ensuring that the raw materials enter the mixing chamber smoothly and evenly, and avoiding the accumulation and blockage of raw materials in the feeding port 4. Furthermore, after the raw materials enter the mixing drum 2, the drive motor 721 of the mixing section 72 is activated by the control adjustment box 6 and fixed to the top of the sealing cover 3 via a support frame. The output end of the drive motor 721 drives the mixing rod 722 to rotate at high speed inside the mixing drum 2 via a coupling. The mixing spiral blades 723 fitted on the outer wall of the mixing rod 722 rotate synchronously with the rotating shaft, using the spiral structure to tumble and push the raw materials horizontally, quickly breaking up and initially mixing the two raw materials, preventing the raw materials from stratifying and accumulating inside the mixing drum 2, and laying the foundation for subsequent deep mixing. The mounting ring 724 fixedly installed at the bottom of the mixing rod 722 rotates synchronously with the mixing rod, and the two sets of crushing and mixing rods 725 symmetrically arranged on the outer wall of the mounting ring 724 rotate at high speed accordingly. The small pointed tips 726, which are evenly fixed at equal intervals on the outer wall of the crushing and mixing rod 725, can pierce and break up raw material clumps such as pigment agglomerates that may be formed during the initial mixing process, breaking the clumps into fine particles. At the same time, the rotation of the crushing and mixing rod 725 further enhances the turbulent motion of the raw materials, allowing the two raw materials to fully contact and fuse at the microscopic level, avoiding inconsistencies in paint color and performance due to uneven mixing. Furthermore, during the mixing process, the control valve 729 at the connection port of the vacuum pump 727 is opened by controlling the adjustment box 6. The negative pressure generated by the vacuum pump 727 is transmitted through the adsorption pipe 728 to the annular tube 7210 fixed on the inner wall of the mixing drum 2, which is located above the crushing and mixing rod 725. The adsorption holes 7211 equidistantly opened on the inner side wall of the annular tube 7210 generate suction, forming a negative pressure, which causes the bubbles to expand and float to the surface and be drawn away by the vacuum pump. Once the mixing time has been reached, the vacuum pump 727, drive motor 721, and small motor 718 are sequentially shut off via the control adjustment box 6. The hydraulic adjusting rod 716 is then extended, causing the quantity control plug plate 717 to reset, closing the quantity control discharge port 714, and stopping the feeding. Subsequently, the valve of the discharge pipe 5 at the bottom of the mixing drum 2 is opened, and the uniformly mixed and impurity-free fluorocarbon coating flows out through the discharge pipe 5 under gravity. It can be directly connected to a storage container or transported to the next production stage, such as the coating process. If continued production is required, the above steps of raw material loading, quantity control feeding, and mixing can be repeated to achieve continuous operation. After a batch of fluorocarbon coatings is produced, turn off the power to all equipment, open the sealing cover 3, and clean the inside of the mixing drum 2. The mixing spiral blade 723, the crushing mixing rod 725, and the drum wall can be rinsed with a high-pressure air gun or a special cleaning agent to remove residual coatings and prevent the residual coatings from drying and affecting the mixing quality of the next batch. At the same time, clean the residual raw materials inside the feeding storage hopper 711, check whether the control side scraper 7110 and the conveying spiral blade 7111 are worn, and replace them if necessary.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fluorocarbon coating feeding device, comprising a mixing cylinder support frame (1), characterized in that: The mixing drum support frame (1) is fixedly installed with a mixing drum (2). The top of the mixing drum (2) is provided with a sealing cover (3) by a mounting bolt. The top of the sealing cover (3) is provided with a feeding port (4). The top of the feeding port (4) is fixedly installed with a sealing gasket (41). The bottom of the mixing drum (2) is connected to a discharge pipe (5). The front of the mixing drum support frame (1) is provided with a control adjustment box (6). Feeding and mixing component (7), which is disposed inside and above the mixing and stirring drum (2); The feeding and mixing component (7) includes: The feeding part (71) is located above the mixing drum (2); The mixing section (72) is located inside and above the mixing drum (2), and the mixing section (72) is located on one side and below the feeding section (71).

2. The fluorocarbon coating feeding device according to claim 1, characterized in that: The feeding section (71) includes: A feeding storage hopper (711) is fixedly installed on the top of the mixing drum (2), and the bottom of the feeding storage hopper (711) is connected to the inside of the feeding port (4); The inner wall of the feeding storage hopper (711) is fixedly installed with a partition plate (712), and the partition plate (712) is used to separate two independent cavities. A separation plate (713) is fixedly installed at the bottom of the partition plate (712), and a controlled discharge port (714) is opened at the top of the separation plate (713), and there are two sets in total, which are symmetrically arranged.

3. The fluorocarbon coating feeding device according to claim 2, characterized in that: The top of the feeding storage hopper (711) is fixedly installed with a top horizontal plate (715), and the bottom of the top horizontal plate (715) is fixedly installed with a hydraulic adjusting rod (716), and there are two sets of them. The bottom of the hydraulic adjusting rod (716) is fixedly installed with a quantity control blocking plate (717), and the quantity control blocking plate (717) is compatible with the quantity control discharge port (714).

4. The fluorocarbon coating feeding device according to claim 3, characterized in that: A small motor (718) is installed above the top horizontal plate (715) through a motor cover, and the motor cover is fixedly installed on the top of the top horizontal plate (715). The output end of the small motor (718) is provided with a rotating shaft (719), and the rotating shaft (719) moves through the partition plate (712) and the separation plate (713) and extends to the bottom of the feeding storage hopper (711).

5. A fluorocarbon coating feeding device according to claim 4, characterized in that: The outer wall of the rotating shaft (719) is fixedly installed with a control scraper (7110) via a connecting arm. The control scraper (7110) is adapted to the inner wall of the feeding storage hopper (711) and is located below the separating plate (713). A conveying spiral plate (7111) is provided below the control scraper (7110). The conveying spiral plate (7111) is sleeved on the bottom of the rotating shaft (719) and located inside the feeding port (4).

6. The fluorocarbon coating feeding device according to claim 1, characterized in that: The mixing portion (72) includes: A drive motor (721) is fixedly mounted on the top of the sealing cover (3) by a support frame; A vacuum pump (727) is mounted on one side of a mixing cylinder support frame (1) via a mounting bracket; The output end of the drive motor (721) is provided with a mixing rod (722) through a coupling, and the mixing rod (722) is located inside the mixing drum (2). The outer wall of the mixing rod (722) is fitted with a mixing spiral blade (723), and the bottom of the mixing rod (722) is fixedly installed with an installation ring (724).

7. A fluorocarbon coating feeding device according to claim 6, characterized in that: The outer wall of the mounting ring (724) is fixedly installed with crushing and mixing rods (725), and there are two sets in total, arranged symmetrically. Small pointed tips (726) are fixedly installed at equal intervals on the outer wall of the crushing and mixing rods (725).

8. A fluorocarbon coating feeding device according to claim 7, characterized in that: The vacuum pump (727) is connected to an adsorption pipe (728), which extends into the interior of the mixing drum (2). A control valve (729) is fitted on the outer wall of the adsorption pipe (728). An annular pipe (7210) is connected to the other end of the adsorption pipe (728). The annular pipe (7210) is fixedly installed on the inner wall of the mixing drum (2) and positioned above the crushing and mixing rod (725). Adsorption holes (7211) are equidistantly opened on the inner side wall of the annular pipe (7210).

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