Ultra-high molecular weight polyethylene fiber extracting agent cleaning device

Abstract

The utility model relates to an ultra-high molecular weight polyethylene fiber extracting agent cleaning device, which is used for cleaning ultra-high molecular weight polyethylene fibers with residual extracting agents after extraction, is arranged between an extraction tank and a drying box and comprises a silk passing channel extending from the extraction tank to a silk inlet of the drying box. The middle of the silk passing channel is bent downwards and back, a cleaning tank containing a cleaning agent is formed in the bent position, the cleaning tank is connected with an oscillator, and an extracting agent in the ultra-high molecular weight polyethylene fibers entering the cleaning tank in the silk passing channel is separated from the ultra-high molecular weight polyethylene fibers and settles at the bottom of the cleaning tank. When the extracting agent is tetrachloroethylene, the cleaning agent is water or plasma liquid. The ultra-high molecular weight polyethylene fiber containing the extraction agent after extraction is washed in the cleaning agent, and all or most of the extraction agent is removed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ultra high molecular weight polyethylene fiber production equipment, especially to an ultra high molecular weight polyethylene fiber extractant cleaning device. BACKGROUND

[0002] The process after extraction in the production process of ultra high molecular weight polyethylene fiber is drying. After extraction, the fiber inevitably adheres to the corresponding extractant, and the commonly used extractant is carbon hydrogen. After Jiangsu Jiujiujiu Technology Co., Ltd. successfully broke through the application difficulty of tetrachloroethylene, tetrachloroethylene became one of the important extractants. Drying is to make the fiber receive the corresponding tension in the process of continuously passing through the box body with a set temperature, so that the extractant carried on the fiber is fully volatilized.

[0003] The drying box is a device with silk inlet and outlet openings at both ends for drying the extractant on the surface of the fiber. Because of the continuity of fiber production, the inside of the drying box is not isolated from the surrounding environment.

[0004] For the above reasons, the extractant adhered to the fiber will inevitably escape into the surrounding air after passing through the drying box. Using carbon hydrogen poses a great safety hazard, and using tetrachloroethylene poses a greater environmental hazard. The usual solution is to install an induced draft device at the top or side opening of the drying box to artificially control the airflow direction of the silk inlet and outlet, ensure that the external gas continuously flows into the equipment, then collect the excess gas and uniformly process it. This method solves the problem to some extent, but also has the problem of high energy consumption. The continuous introduction of fresh air will greatly reduce the temperature inside the equipment, requiring higher heating power to meet the energy needs of volatilizing the extractant. Meanwhile, there is a problem that once the fan fails, the temperature of the drying box will inevitably fluctuate sharply, and the exhaust gas will spread a lot to the surrounding air, which will have very serious consequences. Therefore, in order to ensure that there is no problem, a standby fan must be installed. Thirdly, the installation of the induced draft device is very difficult, because in order to meet the uniformity of the temperature field inside the drying box, the temperature of the airflow and the flow rate and direction of the airflow are not allowed to fluctuate greatly, while the induced draft fan will inevitably cause the non-uniformity of the temperature field and the volatility of the airflow. Fourthly, the excess gas uniformly processed contains a lot of extractant and cannot be directly discharged, but needs to be treated by a series of treatment devices such as absorption tower, heat exchanger and adsorption device before being discharged. See CN201910719836.X for details. SUMMARY

[0005] In order to solve the above problems, the inventor designs a cleaning device so that the silk entering the drying box does not contain extractant, and the cleaning device seals the extraction tank, achieving the effect of solving the above problems.

[0006] The utility model provides an ultra high molecular weight polyethylene fiber extraction agent cleaning device for cleaning the ultra high molecular weight polyethylene fiber with residual extraction agent after extraction, which is arranged between the extraction tank and the drying box, and comprises a wire running channel extending from the extraction tank to the wire inlet of the drying box, wherein the middle part of the wire running channel is bent downward and back, the bent part forms a cleaning tank containing cleaning agent, the cleaning tank is connected with an oscillator, the extraction agent in the ultra high molecular weight polyethylene fiber entering the cleaning tank in the wire running channel is separated from the ultra high molecular weight polyethylene fiber and precipitates at the bottom of the cleaning tank, and when the extraction agent is tetrachloroethylene, the cleaning agent is water or an ionic liquid.

[0007] The ultra high molecular weight polyethylene fiber extraction agent cleaning device further comprises an upper side opening tank body extending from the extraction tank to the drying box, the middle part of the tank bottom of the tank body is opened, the cleaning tank is fixedly connected to the opening, a cover plate is buckled to the upper part of the tank body, the cover plate is connected with a partition plate corresponding to the cleaning tank, the partition plate is inserted into the cleaning tank and immersed below the surface of the cleaning agent in the cleaning tank, and the wire running channel is formed between one side end of the tank body to the other side end of the tank body and has a bend and a back bend at the partition plate.

[0008] The ultra high molecular weight polyethylene fiber extraction agent cleaning device further comprises a guide roller arranged at each bent part in the wire running channel.

[0009] The ultra high molecular weight polyethylene fiber extraction agent cleaning device further comprises a liquid outlet arranged at the bottom of the cleaning tank.

[0010] The ultra high molecular weight polyethylene fiber extraction agent cleaning device further comprises an ultrasonic oscillator arranged at the vertical side wall of the cleaning tank.

[0011] The ultra high molecular weight polyethylene fiber extraction agent cleaning device further comprises a cleaning agent supplementing opening arranged at the cleaning tank for supplementing the cleaning agent in the cleaning tank.

[0012] The utility model discloses a cleaning device for the ultra high molecular weight polyethylene fiber with extraction agent after extraction, which is washed in the cleaning agent, all or most of the extraction agent is removed, the cost of tail gas treatment is greatly reduced, all or most of the extraction agent is directly collected in the cleaning tank and recycled, and the cleaning agent forms a liquid seal effect, so that the hot air in the drying box is prevented from overflowing to cause heat loss and pollution diffusion. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the structural schematic diagram of the utility model embodiment.

[0014] Figure 2 is a schematic view of the side structure of an embodiment. DETAILED DESCRIPTION

[0015] The utility model is further explained below in combination with the drawings and embodiments of the specification:

[0016] A kind of ultra-high molecular weight polyethylene fiber extractant cleaning device, for cleaning the ultra-high molecular weight polyethylene fiber after being extracted and remaining extractant, the cleaning device is arranged between extraction tank and drying box, including the wire channel that extends from extraction tank to the wire inlet between drying box;The middle part of wire channel is bent downwards and back, and the bent part forms the cleaning tank containing cleaning agent, cleaning tank is connected with oscillator, the extractant in the ultra-high molecular weight polyethylene fiber that enters cleaning tank in wire channel is separated from ultra-high molecular weight polyethylene fiber and precipitates in the bottom of cleaning tank.When the extractant is tetrachloroethylene, cleaning agent is water or ionic liquid.

[0017] In application, the utility model can be used alone, one end of wire channel is connected with the wire outlet side of extraction tank, and the other end is butt joint with the wire inlet of drying box;It can also be connected with extraction tank and drying box after being connected in sequence.

[0018] With tetrachloroethylene as extractant, the ultra-high molecular weight polyethylene fiber containing tetrachloroethylene after being extracted is discharged from extraction tank, then enters cleaning tank through one end of wire channel, water is injected in cleaning tank, water and tetrachloroethylene are not mutually soluble, under the vibration of oscillator, tetrachloroethylene molecule is separated from ultra-high molecular weight polyethylene fiber, and because the density of tetrachloroethylene is greater than water, it is deposited in the bottom of cleaning tank, and the liquid level in cleaning tank rises simultaneously, manually or automatically detects liquid level, when liquid level reaches a certain height, it indicates that more tetrachloroethylene has been deposited in the bottom of cleaning tank, tetrachloroethylene is discharged or extracted from the bottom of cleaning tank, and water gradually reduces in the cleaning process, when water depth is insufficient, manually or automatically supplement water in cleaning tank.

[0019] Specifically, Figure 1 The utility model discloses an ultra-high molecular weight polyethylene fiber extractant cleaning device, including a from extraction tank to drying box extending slot body 1 of upper side opening, the middle part of the tank bottom of slot body is opened, and cleaning tank is fixedly connected at the opening, the upper portion of slot body is buckled with cover plate 2, and cover plate is connected with the baffle 6 corresponding to cleaning tank, the baffle is inserted into cleaning tank and sinks below the water surface of cleaning tank by fitting the vertical slot wall of slot body on both sides, and the wire channel with the bending of baffle is formed between one side end of slot body to the other end, and the cleaning tank 3 in wire channel.

[0020] Each bending position in wire channel is provided with guide roller 4 for changing the direction of ultra-high molecular weight polyethylene fiber.

[0021] The bottom of the cleaning tank 3 is provided with a liquid outlet 31. The liquid outlet 31 can be connected with a valve or an automatic phase separation device, so that the washed tetrachloroethylene is returned to the extraction tank.

[0022] The oscillator 5 is an ultrasonic oscillator, and can also be a general mechanical vibration type oscillator, which is arranged on the vertical side wall of the cleaning tank.

[0023] The cleaning tank 3 is provided with a water supplementing opening 32 for supplementing water into the interior. The vertical side wall of the cleaning tank can be provided with a transparent observation window.

[0024] The utility model discloses a cleaning tank is arranged in the extraction tank, and the extraction tank is used to extract the ultrahigh molecular weight polyethylene fiber in the solvent, and the extraction tank is used to clean the ultrahigh molecular weight polyethylene fiber after extraction, and the cleaning tank is used to remove the extraction agent in the ultrahigh molecular weight polyethylene fiber, and the extraction agent is directly collected in the cleaning tank, and the extraction agent is directly recycled, and the cleaning agent forms the liquid seal effect, avoids the hot air overflow in the drying box to cause heat loss and the pollution diffusion.

Claims

1. A cleaning device for ultra-high molecular weight polyethylene fiber extractant, characterized in that, The cleaning device is used to clean ultra-high molecular weight polyethylene fibers that have residual extractant after extraction. The device is characterized in that it is positioned between an extraction tank and a drying chamber, and includes a fiber feeding channel extending from the extraction tank to the fiber inlet of the drying chamber. The fiber feeding channel bends downwards and then back in the middle, forming a cleaning tank containing cleaning agent at the bend. The cleaning tank is connected to an oscillator. The extractant in the ultra-high molecular weight polyethylene fibers entering the cleaning tank through the fiber feeding channel detaches from the ultra-high molecular weight polyethylene fibers and settles at the bottom of the cleaning tank.

2. The ultra-high molecular weight polyethylene fiber extractant cleaning device according to claim 1, characterized in that, The tank includes a tank body with an upper side opening extending from an extraction tank to a drying oven. The bottom of the tank body has an opening in the middle, and a cleaning tank is fixedly connected to this opening. A cover plate is fastened to the upper edge of the tank body. The cover plate is connected to a partition plate corresponding to the cleaning tank. The two sides of the partition plate are inserted into the vertical tank wall of the tank body and submerged below the cleaning agent surface of the cleaning tank. A wire feeding channel with bends and turns is formed from one end of the tank body to the other end at the partition plate.

3. The ultra-high molecular weight polyethylene fiber extractant cleaning device according to claim 2, characterized in that, Each bend in the wire feeding channel is equipped with a guide roller.

4. The ultra-high molecular weight polyethylene fiber extractant cleaning device according to claim 2, characterized in that, The bottom of the cleaning tank is provided with a liquid outlet.

5. The ultra-high molecular weight polyethylene fiber extractant cleaning device according to claim 2, characterized in that, The oscillator is an ultrasonic oscillator and is located on the vertical side wall of the cleaning tank.

6. The ultra-high molecular weight polyethylene fiber extractant cleaning device according to claim 2, characterized in that, The cleaning tank is equipped with a cleaning agent replenishment port for adding cleaning agent into the tank.

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