A reaction kettle for preparing hydrophilic fibers

Abstract

The present application relates to the technical field of hydrophilic fiber processing, and particularly relates to a reaction kettle for preparing hydrophilic fiber, which is used to solve the problems of supplementing reaction liquid at any time and continuous production of fiber, and adopts the following technology: first fiber carding needles and second fiber carding needles are arranged on the opposite inner sides of first clamping plates and second clamping plates alternately, carding cavities are formed between adjacent first fiber carding needles and second fiber carding needles, the first fiber carding needles and the second fiber carding needles are hung with fibers to be treated, a rotatable flip cover with a latch is arranged at the opening of the slot, and a sealing gasket is arranged on the inner bottom of the flip cover with the latch; the reaction kettle for preparing hydrophilic fiber is provided with a slot on the cover body, grid-shaped clamping plates are placed in the slot, fibers are placed on the grid-shaped clamping plates, and the fibers to be treated are extended into the reaction bin through the slot, so that the clamping plates can be replaced at any time, and the operator can use conveniently.

Description

Technical Field

[0001] This invention relates to the medical field, and in particular to a reaction vessel for preparing hydrophilic fiber dressings. Background Technology

[0002] Hydrophilic fiber dressings are generally made from natural cellulose. Through reaction with etherifying or oxidizing agents, the primary hydroxyl groups in the cellulose structure are modified into other strongly hydrophilic functional groups. After washing, drying, encapsulation, and sterilization, the hydrophilic fiber dressing is obtained. When used, it adheres closely to the wound, has strong absorption, and does not require frequent changes. After absorbing wound exudate, the dressing forms a gel, which can maintain appropriate wound moisture and soften necrotic tissue, achieving the purpose of autologous debridement.

[0003] Chinese patent application number 201410773504.7, entitled "A Preparation Device and Method for Oxidized Regenerated Cellulose Absorbable Hemostatic Gauze," includes a liquid preparation tank, an impregnation tank, and a liquid guiding module connecting the two. The liquid preparation tank consists of a capsule-shaped tank and three horizontal legs at the bottom. The tank is divided into a top inlet, a middle filling section, and a bottom outlet. The inlet has a cleaning pipe embedded in its center at the top, a spray head at the bottom, a manhole on one side, and a water inlet on the other. A return pipe and a liquid inlet pipe are connected between the cleaning pipe and the water inlet. Compared with the prior art, this invention innovates in production equipment. The carboxyl substitution reaction of the product occurs between the gauze and the liquid. Commonly used reaction equipment easily causes the gauze to entangle during stirring, resulting in uneven reaction, compromised product quality, and production difficulties. Therefore, we have specially developed dedicated equipment. Using this equipment, the entire production process is guaranteed. The chemical composition of each part of the gauze reacts evenly and fully; the gauze will not tangle or deform, saving manpower and resources, greatly reducing the scrap rate, realizing large-scale production, and reducing production costs; a special reaction equipment for gauze has been developed. Using this special equipment, the chemical reaction of each part of the entire gauze is guaranteed to be even and full during the production process; greatly reducing the scrap rate and production costs; the equipment adopts mechanical seals, with good sealing performance; this equipment ensures no pollution, high efficiency, and easy operation: Oxidized regenerated cellulose absorbable hemostatic gauze, in addition to possessing the various advantages of commercially available oxidized regenerated cellulose absorbable hemostatic gauze, also combines chitosan, chitosan oligosaccharide, and gallnut tannins. The layered selection method produces a finished product that far exceeds the original gauze products containing the above three or two combinations, possessing stronger degradation performance, and can simulate a weakly alkaline or weakly acidic environment during the degradation process to promote human healing or compensate for the environmental factors required during the degradation process;

[0004] Existing reaction vessels typically involve placing fibers inside for impregnation. Once the fibers are removed after the reaction is complete, the equipment needs to be stopped, which is time-consuming and labor-intensive. Since the equipment does not need to be stopped, the reaction vessel needs to be replenished. Therefore, a reaction vessel that can continuously replenish the reaction solution and produce fibers is needed. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] The main objective of this invention is to provide a reaction vessel for preparing hydrophilic fibers, which solves the problems of replenishing the reaction solution at any time and enabling continuous fiber production.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, the present invention provides a reaction vessel for preparing hydrophilic fibers, including an impregnation cylinder, a reaction chamber, a feeding cylinder, a circulating pump and a liquid guiding pipe. The inner cavity of the impregnation cylinder is the reaction chamber, and the upper end of the impregnation cylinder is provided with an improved cover. The improved cover includes a cover body, and the cover body is fixedly installed on the upper end of the impregnation cylinder. The reaction chamber contains a reaction liquid.

[0009] The improved cap further includes a slot, a first clamping plate, a first fiber combing needle, a second clamping plate, a second fiber combing needle, a combing cavity, a flip cover with a pin, and a sealing gasket. The upper end of the cap has multiple slots. Each slot has a first clamping plate and a second clamping plate at the bottom inner edge. The first and second fiber combing needles are staggered on the inner sides of the first and second clamping plates. A combing cavity is formed between adjacent first and second fiber combing needles. Fibers to be processed are hung on the first and second fiber combing needles. The opening of the slot has a rotatable flip cover with a pin, and the bottom inner edge of the flip cover with the pin has a sealing gasket.

[0010] Preferably, the slot is a rectangular through hole, and the baffle at the bottom of the slot is integrally formed with the cover, and the slot is adapted to the first clamping plate and the second clamping plate.

[0011] Preferably, the first clamping plate and the second clamping plate are designed separately, and the inner walls of the first clamping plate and the second clamping plate are extruded and slotted at both ends. The first clamping plate is provided with a plurality of first fiber combing needles, and the second clamping plate is provided with a plurality of second fiber combing needles. The first clamping plate, the first fiber combing needles, the second clamping plate and the second fiber combing needles form a grid-like clamping plate.

[0012] Preferably, the flip cover with a pin is connected to the cover body by a pivot, and the flip cover with a pin is fixed to the cover body by a resettable pin. The flip cover with a pin is adapted to the slot, and the sealing gasket is fixedly connected to the flip cover with a pin, and the sealing gasket is in close contact with the opening wall of the slot.

[0013] Preferably, the improved cover further includes a connecting strip, an elastic plate, and a handle, and both the first clamping plate and the second clamping plate are provided with two connecting strips, each of the connecting strips has an elastic plate at its upper end, and two adjacent elastic plates have handles at their upper ends.

[0014] Preferably, the connecting strip, elastic plate, and handle are fixedly connected, one set of the connecting strips is fixed to the first clamping plate, and the other set of the connecting strips is fixed to the second clamping plate. The elastic plate has an S-shaped cross-section and presses down against the connecting strip. The middle section of the handle is circular.

[0015] Preferably, the side wall of the impregnation cylinder is provided with a liquid guiding pipe, and the impregnation cylinder is connected to a feeding cylinder and a circulation pump through the liquid guiding pipe. The bottom of the reaction chamber is provided with a base, and the inner top of the base is provided with an ion concentration sensor that extends into the reaction chamber. The upper end of the feeding cylinder is provided with a feeding port.

[0016] Preferably, the liquid guiding pipe includes a first valve, an inlet pipe, an outlet pipe, and a second valve. The inlet pipe is provided on the lower part of the side wall of the impregnation cylinder, and the outlet pipe is provided on the upper part of the side wall of the impregnation cylinder. A loop is formed from the inlet pipe, the first valve, the circulation pump, the feed cylinder, the second valve, the outlet pipe to the impregnation cylinder. The path of the circulation loop is impregnation cylinder, outlet pipe, second valve, feed cylinder, circulation pump, first valve, and inlet pipe. The reaction liquid rises from the bottom of the reaction chamber to the top of the reaction chamber and is stirred to mix the reaction liquid.

[0017] Preferably, the reaction solution 4 is composed of: 3-20% sodium hydroxide, 3-40% sodium chloroacetate, 20-30% water, and 50-80% ethanol.

[0018] (III) Beneficial Effects

[0019] The above-described technical solution of the present invention has the following advantages:

[0020] The present invention provides a reaction vessel for preparing hydrophilic fibers.

[0021] 1. A slot is made on the cover, and a grid-shaped clamping plate is placed in the slot. Fibers are placed on the grid-shaped clamping plate. The fibers to be processed enter the reaction chamber through the slot. Because of the slot and clamping plate, the clamping plate can be replaced at any time without stopping the entire machine to replace the clamping plate and fibers, which is convenient for the operator.

[0022] 2. A connecting strip, an elastic plate, and a handle are provided at the upper end of the clamping plate. The elastic plate presses against the clamping plate, making the clamping plate press firmly against the bottom of the slot to prevent the clamping plate from shaking. The handle makes it easy for the operator to take it out.

[0023] 3. Water inlet and outlet pipes are installed at the upper and lower ends of the impregnation cylinder. The opening and closing of the water inlet and outlet pipes are controlled by valves, so that the impregnation cylinder, liquid guide pipe, feed cylinder and circulation pump form a reaction liquid circulation loop. Since the liquid inlet pipe is located at the bottom of the impregnation cylinder, the liquid entering the liquid inlet pipe rises to the top of the reaction chamber, realizing the mixing of the reaction liquid. The ion concentration sensor detects the change of ion concentration of the reaction liquid in the reaction chamber. Attached Figure Description

[0024] Figure 1 This is a diagram illustrating the overall structure of the present invention;

[0025] Figure 2 This is an exploded view of the impregnation cylinder and the improved cap of the present invention;

[0026] Figure 3 This is a rotating illustration of the flip cover with latch of the present invention;

[0027] Figure 4 This is an exploded view of the improved capping of the present invention;

[0028] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0029] Figure 6 This is a front sectional view of the overall structure of the present invention;

[0030] Figure 7 This is a top view of the overall structure of the present invention;

[0031] Figure 8 This is a diagram illustrating the feeding cylinder, circulating pump, and liquid guiding pipe of the present invention.

[0032] In the diagram: 1. Impregnation cylinder; 2. Improved cap; 201. Cap body; 202. Groove; 203. First clamping plate; 204. First fiber combing needle; 205. Second clamping plate; 206. Second fiber combing needle; 207. Combing chamber; 208. Flip cap with pin; 209. Sealing gasket; 210. Connecting strip; 211. Elastic plate; 212. Handle; 3. Reaction chamber; 4. Reaction liquid; 5. Base; 6. Ion concentration sensor; 7. Feeding cylinder; 8. Circulation pump; 9. Liquid guiding pipe; 901. First valve; 902. Liquid inlet pipe; 903. Liquid outlet pipe; 904. Second valve; 10. Feeding port. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] Example 1:

[0035] like Figure 1 ,2 As shown in Figures 3, 4, and 5, a reaction vessel for preparing hydrophilic fibers includes an impregnation cylinder 1, a reaction chamber 3, a feeding cylinder 7, a circulating pump 8, and a liquid guiding pipe 9. The inner cavity of the impregnation cylinder 1 is the reaction chamber 3. An improved cover 2 is provided at the upper end of the impregnation cylinder 1. The improved cover 2 includes a cover body 201. The cover body 201 is fixedly installed at the upper end of the impregnation cylinder 1. The reaction chamber 3 contains a reaction liquid 4.

[0036] The improved cap 2 also includes a slot 202, a first clamping plate 203, a first fiber combing needle 204, a second clamping plate 205, a second fiber combing needle 206, a combing cavity 207, a flip cover 208 with a pin, and a sealing gasket 209. The upper end of the cap 201 is provided with multiple slots 202. The bottom of each slot 202 is provided with a first clamping plate 203 and a second clamping plate 205. The first fiber combing needle 204 and the second fiber combing needle 206 are staggered on the inner sides of the first clamping plate 203 and the second clamping plate 205. A combing cavity 207 is formed between adjacent first fiber combing needles 204 and second fiber combing needles 206. Fibers to be processed are hung on the first fiber combing needles 204 and the second fiber combing needles 206. The opening of the slot 202 is provided with a rotatable flip cover 208 with a pin. The bottom of the flip cover 208 with a pin is provided with a sealing gasket 209.

[0037] The slot 202 is a rectangular through hole. The baffle at the bottom of the slot 202 is integrally set with the cover 201. The slot 202 is adapted to the first clamping plate 203 and the second clamping plate 205. The first clamping plate 203 and the second clamping plate 205 are designed separately. The two ends of the first clamping plate 203 and the second clamping plate 205 press against the inner wall of the slot 202. The first clamping plate 203 is provided with a plurality of first fiber combing needles 204, and the second clamping plate 205 is provided with a plurality of second fiber combing needles 206. The first clamping plate 203, the first fiber combing needles 204, the second clamping plate 205 and the second fiber combing needles 206 form a grid-like clamping plate. The flip cover 208 with a pin is connected to the cover 201 through a pivot. 1. The flip cover 208 with the pin is fixed by a resettable pin and is adapted to the slot 202. The sealing gasket 209 is fixedly connected to the flip cover 208 with the pin and is in close contact with the opening wall of the slot 202. The reaction solution 4 is composed of 3-20% sodium hydroxide, 3-40% sodium chloroacetate, 20-30% water, and 50-80% ethanol. The hydrophilic fiber preparation process is to immerse the fiber in the reaction solution, which is composed of 3-20% sodium hydroxide, 3-40% sodium chloroacetate, 20-30% water, and 50-80% ethanol. The reaction solution temperature is 20-70℃, and the immersion time is 0.5-5h. The fiber is then removed and washed to obtain the hydrophilic fiber. Specifically, a pair of clamping plates can be placed in the slot 202 on the upper side of the immersion cylinder 1.These clamping plates are mesh-like (with sufficiently small mesh openings to allow liquid to pass through), and have several fine needles on their inner sides (which do not affect the fiber state) for fixing the nonwoven fabric (or other fibers that can be used as reactants). The inner side of the first clamping plate 203 is provided with multiple first fiber combing needles 204, and the inner side of the second clamping plate 205 is provided with multiple second fiber combing needles 206. The first fiber combing needles 204 and the second fiber combing needles 206 are arranged in an alternating manner, and a combing cavity 207 is formed between adjacent first fiber combing needles 204 and second fiber combing needles 206. This can prevent the nonwoven fabric from deforming or wrinkling during the reaction process. During the reaction process, the clamping plate with several pieces of nonwoven fabric fixed is placed into the groove 202 of the impregnation cylinder 1, and the reaction time is set. After the reaction time is reached, the clamping plate is removed. The unreacted nonwoven fabric is placed into the impregnation tank 1 in the same way to continue the reaction, and the machine does not need to be stopped during this process. Compared with traditional equipment, this equipment can maintain the concentration of reagents participating in the reaction in the impregnation tank 1, improve the degree of reaction, and accelerate the reaction rate. The impregnation tank 1 is equipped with a stirring paddle, which greatly reduces the possibility of deformation or wrinkles on the fiber surface. Continuous production is achieved by changing the clamping plate. A slot 202 is opened on the cover 201, and a grid-shaped clamping plate is placed in the slot 202. Fibers are placed on the grid-shaped clamping plate. The fiber to be processed enters the reaction chamber 3 through the slot 202. Due to the use of the slot 202 and the clamping plate, the clamping plate can be replaced at any time without stopping the entire machine to replace the clamping plate, which is convenient for the operator to replace the clamping plate.

[0038] Example 2:

[0039] like Figure 3 , 4 As shown in Figure 5, the components that are the same as or corresponding to those in Embodiment 1 are marked with the same reference numerals as those in Embodiment 1. For the sake of simplicity, only the differences from Embodiment 1 will be described below. The difference is that the improved cover 2 also includes a connecting strip 210, an elastic plate 211, and a handle 212. The first clamping plate 203 and the second clamping plate 205 are each provided with two connecting strips 210. The upper end of each connecting strip 210 is provided with an elastic plate 211, and the upper ends of two adjacent elastic plates 211 are provided with handles 212.

[0040] The connecting strip 210, elastic plate 211, and handle 212 are fixedly connected. One set of connecting strips 210 is fixed to the first clamping plate 203, and the other set of connecting strips 210 is fixed to the second clamping plate 205. The elastic plate 211 has an S-shaped cross-section and presses down against the connecting strip 210. The middle section of the handle 212 is circular. The connecting strip 210, elastic plate 211, and handle 212 are set at the upper end of the clamping plate. The elastic plate 211 squeezes the clamping plate, so that the clamping plate is pressed against the bottom of the slot 202 to prevent the clamping plate from shaking. The handle 212 makes it convenient for the operator to take it out.

[0041] Example 3:

[0042] like Figure 1 , 2 As shown in Figures 3, 4, 5, 6, 7, and 8, the components that are the same as or corresponding to those in Embodiment 1 are referred to by the same reference numerals as those in Embodiment 1. For the sake of simplicity, only the differences from Embodiment 1 will be described below. The difference is that the side wall of the impregnation cylinder 1 is provided with a liquid guiding pipe 9, and the impregnation cylinder 1 is connected to the feeding cylinder 7 and the circulation pump 8 through the liquid guiding pipe 9. The bottom of the reaction chamber 3 is provided with a base 5, and the inner top of the base 5 is provided with an ion concentration sensor 6 that extends into the reaction chamber 3. The upper end of the feeding cylinder 7 is provided with a feeding port 10.

[0043] The liquid guiding pipe 9 includes a first valve 901, an inlet pipe 902, an outlet pipe 903, and a second valve 904. The inlet pipe 902 is located on the lower part of the side wall of the impregnation cylinder 1, and the outlet pipe 903 is located on the upper part of the side wall of the impregnation cylinder 1. A loop is formed from the inlet pipe 902, the first valve 901, the circulation pump 8, the feed cylinder 7, the second valve 904, the outlet pipe 903, to the impregnation cylinder 1. The path of the circulation loop is: impregnation cylinder 1, outlet pipe 903, second valve 904, feed cylinder 7, circulation pump 8, first valve 901, and inlet pipe 902. The reaction liquid 4 rises from the bottom of the reaction chamber 3 to the top of the reaction chamber 3 and is stirred. The upper and lower parts of the side wall of the impregnation cylinder 1 are connected to the circulation pump 8 and the feed cylinder 7, and the reaction liquid 4 is fed into the impregnation cylinder 1 through the feed cylinder 7. When materials are added, the circulating pump 8 operates to circulate the reaction liquid 4 inside the machine. An ion concentration sensor 6 is installed inside the impregnation cylinder 1. By sensing and detecting changes in the ion concentration in the reaction liquid 4, the required reactants are added to the feed cylinder 7 in a timely manner to maintain the concentration of the reaction liquid 4 in the system and ensure the reaction rate. Water inlet and outlet pipes are set at the upper and lower ends of the impregnation cylinder 1. The opening and closing of the water inlet and outlet pipes are controlled by valves, so that the impregnation cylinder 1, the liquid guide pipe 9, the feed cylinder 7 and the circulating pump 8 form a reaction liquid 4 circulation loop. Since the liquid inlet pipe 902 is located at the bottom of the impregnation cylinder 1, the liquid entering the liquid inlet pipe 902 rises to the top of the reaction chamber 3, realizing the mixing of the reaction liquid 4. The ion concentration sensor 6 detects the changes in the ion concentration of the reaction liquid 4 in the reaction chamber 3.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] In the description of this invention, unless otherwise stated, "several" means one or more; "multiple" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reaction vessel for preparing hydrophilic fibers, comprising an impregnation cylinder (1), a reaction chamber (3), a feeding cylinder (7), a circulating pump (8), and a liquid guiding pipe (9), wherein the inner cavity of the impregnation cylinder (1) is the reaction chamber (3), and the upper end of the impregnation cylinder (1) is provided with an improved cap (2), the improved cap (2) comprising a cover body (201), and the cover body (201) is fixedly installed on the upper end of the impregnation cylinder (1), and the reaction chamber (3) contains a reaction liquid (4), characterized in that: The improved cap (2) further includes a slot (202), a first clamping plate (203), a first fiber combing needle (204), a second clamping plate (205), a second fiber combing needle (206), a combing cavity (207), a flip cap (208) with a pin, and a sealing gasket (209). The upper end of the cap body (201) is provided with multiple slots (202). Each slot (202) has a first clamping plate (203) and a second clamping plate (205) at its inner bottom baffle. The first clamping plate (203) and... The second clamping plate (205) has first fiber combing needles (204) and second fiber combing needles (206) staggered on their opposite inner sides. A combing cavity (207) is formed between adjacent first fiber combing needles (204) and second fiber combing needles (206). Fibers to be processed are hung on the first fiber combing needles (204) and second fiber combing needles (206). The opening of the slot (202) is provided with a rotatable flip cover (208) with a pin, and the inner bottom of the flip cover (208) with the pin is provided with a sealing gasket (209). The improved cover (2) further includes a connecting strip (210), an elastic plate (211), and a handle (212). Both the first clamping plate (203) and the second clamping plate (205) are provided with two connecting strips (210). Each connecting strip (210) has an elastic plate (211) at its upper end, and two adjacent elastic plates (211) have handles (212) at their upper ends. The connecting strip (210), elastic plate (211), and handle (212) are fixedly connected. One set of the connecting strips (210) is fixed to the first clamping plate (203), and the other set of the connecting strips (210) is fixed to the second clamping plate (205). The elastic plate (211) has an S-shaped cross-section and presses down against the connecting strip (210). The middle section of the handle (212) is circular.

2. The reaction vessel for preparing hydrophilic fibers according to claim 1, characterized in that: The slot (202) is a rectangular through hole, and the baffle at the bottom of the slot (202) is integrally set with the cover (201), and the slot (202) is adapted to the first clamping plate (203) and the second clamping plate (205).

3. The reaction vessel for preparing hydrophilic fibers according to claim 2, characterized in that: The first clamping plate (203) and the second clamping plate (205) are designed separately, and the inner walls of the grooves (202) at both ends of the first clamping plate (203) and the second clamping plate (205) are squeezed open. The first clamping plate (203) is provided with a plurality of first fiber combing needles (204), and the second clamping plate (205) is provided with a plurality of second fiber combing needles (206). The first clamping plate (203), the first fiber combing needles (204), the second clamping plate (205) and the second fiber combing needles (206) form a grid-like clamping plate.

4. The reaction vessel for preparing hydrophilic fibers according to claim 3, characterized in that: The flip cover (208) with a pin is connected to the cover body (201) by a pivot, and the flip cover (208) with a pin is fixed to the cover body (201) by a resettable pin. The flip cover (208) with a pin is adapted to the slot (202). The sealing gasket (209) is fixedly connected to the flip cover (208) with a pin, and the sealing gasket (209) is in close contact with the opening wall of the slot (202).

5. A reaction vessel for preparing hydrophilic fibers according to any one of claims 1 to 4, characterized in that: The side wall of the impregnation cylinder (1) is provided with a liquid guiding pipe (9), and the impregnation cylinder (1) is connected to a feeding cylinder (7) and a circulation pump (8) through the liquid guiding pipe (9). The bottom of the reaction chamber (3) is provided with a base (5), and the inner top of the base (5) is provided with an ion concentration sensor (6) that extends into the reaction chamber (3). The upper end of the feeding cylinder (7) is provided with a feeding port (10).

6. The reaction vessel for preparing hydrophilic fibers according to claim 5, characterized in that: The liquid guiding pipe (9) includes a first valve (901), an inlet pipe (902), an outlet pipe (903), and a second valve (904). The lower part of the side wall of the impregnation cylinder (1) is provided with an inlet pipe (902), and the upper part of the side wall of the impregnation cylinder (1) is provided with an outlet pipe (903). A loop is formed from the inlet pipe (902), the first valve (901), the circulation pump (8), the feeding cylinder (7), the second valve (904), the outlet pipe (903) to the impregnation cylinder (1). The path of the circulation loop is impregnation cylinder (1), outlet pipe (903), second valve (904), feeding cylinder (7), circulation pump (8), first valve (901), and inlet pipe (902). The reaction liquid (4) rises from the bottom of the reaction chamber (3) to the top of the reaction chamber (3) and is stirred to mix the reaction liquid (4).

7. The reaction vessel for preparing hydrophilic fibers according to claim 1, characterized in that: The reaction solution (4) consists of: 3-20% sodium hydroxide, 3-40% sodium chloroacetate, 20-30% water, and 50-80% ethanol.

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