Carbon fiber sizing equipment

Abstract

The utility model discloses carbon fiber sizing equipment. The carbon fiber sizing equipment comprises a sizing tank and a filtering assembly arranged in the sizing tank, a slurry outlet is formed in one end of the sizing tank, and an overflow port is formed in the other end of the sizing tank; the filtering assembly is located behind the soybean milk outlet and in front of the overflow opening. Impurities in the sizing tank can be effectively removed, and the carbon fiber quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of composite material preparation, and particularly relates to a carbon fiber sizing equipment. BACKGROUND

[0002] The existing carbon fiber sizing equipment has the following problems:

[0003] (1) The bottom of the sizing tank is horizontal, and after long-time operation, fluff and gel are easily accumulated and taken out to the surface of the fiber during the fiber running process, and after drying, gel points are formed on the surface of the fiber, causing fiber breakage, fluffing and uneven sizing, affecting the processability of the fiber during weaving and pre-impregnation;

[0004] (2) During the sizing process, the sizing liquid flow rate of the sizing outlet is fast, and the fluff and gel at the bottom of the sizing tank are easily taken to the surface of the fiber, and after drying, gel is formed to cause winding abnormality and reduce the yield of carbon fiber;

[0005] (3) The fluff in the sizing tank and the overflow tank is easily accumulated to block the pipeline. UTILITY MODEL CONTENTS

[0006] To solve the problems in the prior art, the utility model provides a carbon fiber sizing equipment which can effectively remove impurities in the sizing tank and improve the quality and production efficiency of carbon fiber.

[0007] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a carbon fiber sizing equipment, which comprises a sizing tank and a filter assembly arranged in the sizing tank; one end of the sizing tank is provided with a sizing outlet, and the other end of the sizing tank is provided with an overflow port; the filter assembly is located after the sizing outlet and before the overflow port.

[0008] Further, the filter assembly comprises a plurality of groups of suction and insertion grooves and a plurality of filter screens arranged in the suction and insertion grooves in sequence along the flow direction of the sizing liquid.

[0009] Further, the mesh number of each filter screen increases from small to large along the flow direction of the sizing liquid.

[0010] Further, the width of each filter screen is the same as that of the sizing tank, and the height is higher than that of the sizing liquid in the sizing tank and lower than that of the carbon fiber tows.

[0011] Further, the mesh holes of adjacent filter screens are arranged alternately.

[0012] Further, it further comprises a sizing liquid conveying pipeline for conveying sizing liquid into the sizing tank, the sizing liquid conveying pipeline is connected with the sizing outlet, and a bag filter with replaceable filter bags is installed on the sizing liquid conveying pipeline.

[0013] Further, the liquid inlet of the bag filter is located at the top of the bag filter.

[0014] Further, the bottom plate of the sizing tank is funnel-shaped, and the lowest point of the funnel-shaped bottom plate is provided with a backflow port located at the center of the sizing tank.

[0015] Further, the bottom plate is spliced by a plurality of steel plates.

[0016] Further, the included angle between each steel plate and the horizontal plane is 5°-10°.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] (1) The filter assembly is arranged after the sizing outlet and before the overflow port, which can effectively remove impurities in the sizing tank and improve the quality and production efficiency of carbon fibers.

[0019] (2) The filter assembly has a plurality of filter screens with different mesh sizes, which realizes layer-by-layer filtration of the sizing liquid; the filter screen mesh holes are staggered to control the flow rate of the sizing liquid, reduce the disturbance of the sizing liquid in the sizing tank during the sizing process, and realize online cleaning of the filtered impurities and convenient replacement of the filter screen.

[0020] (3) The external bag filter can adjust the mesh size of the filter bag according to different sizing liquids, realize external circulation filtration of the sizing liquid, and facilitate cleaning.

[0021] (4) The funnel-shaped bottom of the sizing tank can effectively reduce the deposition of gel and fluff on the bottom, reduce fiber inclusions, and facilitate the gel and fluff on the bottom to enter the sizing circulation system with the sizing liquid, be filtered out in time, and reduce pipeline blockage. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a wire drawing route schematic diagram of the carbon fiber sizing equipment in the prior art;

[0023] Figure 2 is a whole structure schematic diagram of the carbon fiber sizing equipment in the prior art;

[0024] Figure 3 is a whole structure schematic diagram of the carbon fiber sizing equipment provided by the embodiment of the present application Figure 1 ;

[0025] Figure 4 is a whole structure schematic diagram of the carbon fiber sizing equipment provided by the embodiment of the present application Figure 2 ;

[0026] In the figure: 1, carbon fiber tows; 2, guide roller; 3, impregnation roller; 4, slurry outlet; 41, bag filter; 5, sizing tank; 51, suction and insertion tank; 52, filter screen; 53, bottom plate; 6, extrusion roller; 7, backflow port; 8, pipeline; 9, overflow port; 10, overflow storage tank; 11, support frame; 120, flange; 121, ball valve; 122, blue filter; 123, tee joint; 124, pneumatic diaphragm pump; 125, valve; 126, slurry discharge pipeline; 127, compressed air pipeline; 128, hose; 129, barrel slurry. DETAILED DESCRIPTION

[0027] The utility model will be described further in connection with the drawings. The following examples are only used to illustrate the technical scheme of the utility model more clearly, and cannot be used to limit the protection scope of the utility model.

[0028] As shown in Figure 1 , Figure 2 , carbon fiber tows 1 pass through guide roller 2 and impregnation roller 3 into sizing tank 5 of carbon fiber sizing equipment, and are immersed in slurry in sizing tank 5, and then pass through extrusion roller 6 into the next process. The bottom of sizing tank 5 is connected with support frame 11, one end of sizing tank 5 is provided with slurry outlet 4, and the other end of sizing tank 5 is provided with overflow port 9. Overflow port 9 is connected with overflow storage tank 10. Backflow port 7 is arranged on bottom plate 53 of sizing tank 5, and backflow port 7 is located between slurry outlet 4 and overflow port 9. Backflow port 7 and overflow storage tank 10 are connected with slurry circulation unit through pipeline 8 respectively.

[0029] The slurry circulation unit comprises blue filter 122, the inlet of blue filter 122 is connected with pipeline 8 through flange 120 and ball valve 121. The inlet of pneumatic diaphragm pump 124 is connected with the outlet of blue filter 122 and hose 128 through tee joint 123 respectively, and hose 128 is connected to barrel slurry 129. Pneumatic diaphragm pump 124 is connected with air source through compressed air pipeline 127. The outlet of pneumatic diaphragm pump 124 is connected with slurry outlet 4 through slurry conveying pipeline, and slurry conveying pipeline is also connected with slurry discharge pipeline 126 through valve 125.

[0030] As shown in Figure 3 , Figure 4As shown, three groups of filter assemblies are installed after the pulp outlet 4 and before the overflow 9 in the embodiment. The filter assemblies include draw-in slots 51, and different mesh sizes of filter screens 52 are installed in the draw-in slots 51. The mesh sizes of the filter screens 52 increase from small to large along the flow direction of the pulp, and are 5 mesh, 10 mesh, and 18 mesh in sequence. The mesh size and the number of the filter screens can be selected according to different pulps. The pulp is filtered through the filter screens layer by layer and enters the sizing tank 5. The size of the filter screen 52 is the same as the width of the sizing tank 5, and the height is higher than that of the pulp and lower than that of the carbon fiber tows 1. The multi-layer draw-in filter assemblies are installed after the pulp outlet and before the overflow, which can effectively intercept the hair, hair balls, and gel in the pulp outlet and the overflow tank, ensure that the pulp entering the sizing tank is filtered, reduce the accumulation of hair, and reduce the pipeline blockage.

[0031] In the embodiment, the mesh holes of adjacent filter screens 52 are staggered. By staggering the mesh holes of the filter screens, the flow rate of the pulp can be controlled, the disturbance of the pulp in the sizing tank during the pulp replenishment process can be reduced, and the fiber entrainment of the gel and hair can be reduced. The draw-in filter assembly is convenient for online cleaning and replacement, and is convenient for employees to operate.

[0032] A bag filter 41 with a replaceable filter bag is installed on the pulp conveying pipeline for conveying the pulp into the sizing tank 5. The bag filter 41 is fixed above the support, the inside of the bag filter is a replaceable filter bag for filtering the pulp, and the outside is a filter cylinder body for storing the filtered pulp. The filter bag is arranged on a reinforced mesh basket and hung in the filter cylinder body. The pulp outlet pipeline is lifted to a height higher than the bag filter, so that the pulp in the pipeline flows vertically into the bag filter and is filtered by gravity. The efficiency of the pneumatic diaphragm pump is controlled by controlling the air volume of the compressed air, so as to control the flow rate of the pulp into the bag filter. The filter cylinder body and the pulp outlet are connected by a pipeline, and the filtered pulp flows into the pulp outlet.

[0033] The bag filter 41 with a replaceable filter bag is convenient for online cleaning and replacement, and is convenient for employees to operate. The mesh size of the bag filter 41 can be selected according to different pulps, which improves the universality of the pulp to the new sizing equipment.

[0034] The bottom plate 53 of the sizing tank 5 is funnel-shaped, and the lowest point of the funnel-shaped bottom plate 53 is provided with a backflow port 7, which is located between the sizing outlet port 4 and the overflow port 9. In the embodiment, the backflow port 7 of the bottom of the sizing tank 5 is moved to the center of the sizing tank 5, and four triangular steel plates (stainless steel material) are respectively inclinedly welded at the backflow port 7 around the backflow port 7, the included angle between the triangular steel plates and the horizontal plane is 5°-10°, the joint is polished and cut to be smooth, and the sizing liquid is gathered and flows into the backflow port for the sizing circulation. The funnel-shaped bottom plate can effectively reduce the deposition of gel and lint on the bottom, reduce the fiber inclusion, and at the same time, the gel and lint on the bottom can enter the sizing liquid circulation unit with the circulation of the sizing liquid, be filtered out in time, and reduce the pipeline blockage.

[0035] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A carbon fiber sizing apparatus characterized by comprising: 1) a sizing device for applying a sizing agent to a carbon fiber, The application relates to a sizing tank (5) and a filter assembly arranged in the sizing tank (5). One end of the sizing tank (5) is provided with a sizing outlet (4), and the other end of the sizing tank (5) is provided with an overflow outlet (9); the filter assembly is located behind the sizing outlet (4) and in front of the overflow outlet (9). The filter assembly comprises a plurality of groups of draw-in grooves (51) and a plurality of filter screens (52) arranged in the draw-in grooves (51) and sequentially along the flow direction of sizing liquid.

2. The carbon fiber sizing apparatus according to claim 1, characterized by, The mesh number of each filter screen (52) increases from small to large along the flow direction of sizing liquid.

3. The carbon fiber sizing apparatus according to claim 2, wherein The width of each filter screen (52) is the same as that of the sizing tank (5), and the height of each filter screen (52) is higher than that of sizing liquid in the sizing tank (5) and lower than that of carbon fiber tows.

4. The carbon fiber sizing apparatus according to claim 2, wherein The mesh holes of adjacent filter screens (52) are arranged in an interlaced mode.

5. The carbon fiber sizing apparatus according to claim 2, wherein The application further relates to a sizing liquid conveying pipeline for conveying sizing liquid into the sizing tank (5), wherein the sizing liquid conveying pipeline is connected with the sizing outlet (4), and a bag filter (41) with replaceable filter bags is arranged on the sizing liquid conveying pipeline.

6. The carbon fiber sizing apparatus according to claim 1, wherein The liquid inlet of the bag filter (41) is located at the top of the bag filter (41).

7. The carbon fiber sizing apparatus according to claim 6, wherein The bottom plate (53) of the sizing tank (5) is funnel-shaped, the lowest point of the funnel-shaped bottom plate (53) is provided with a backflow outlet (7), and the backflow outlet (7) is located at the center of the sizing tank (5).

8. The carbon fiber sizing apparatus according to claim 1, wherein The bottom plate (53) is spliced by a plurality of steel plates.

9. The carbon fiber sizing apparatus according to claim 8, wherein The included angle between each steel plate and the horizontal plane is 5-10 degrees.

10. The carbon fiber sizing apparatus according to claim 9, wherein ​

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