Spinning solution filtering equipment for cellulose acetate fiber cloth production

Abstract

The utility model discloses spinning solution filtering equipment for cellulose acetate fiber cloth production. The spinning solution filtering equipment comprises a support frame, and a defoaming mechanism and a trapezoidal filtering mechanism are arranged above the support frame; the defoaming mechanism comprises a liquid guide hopper fixed on the support frame, the upper end of the liquid guide hopper is connected with a defoaming bin, the left end of the defoaming bin is provided with a liquid injection pipe, the right end is connected with a vacuum pump, and the lower end of the liquid guide hopper is connected with a liquid discharge pipe; the trapezoidal filtering mechanism comprises a filtering bin communicated with the defoaming bin, a first L-shaped liquid conveying plate and a second L-shaped liquid conveying plate are arranged in the filtering bin to form a trapezoidal flow channel, woven filtering cloth is arranged on the right side of the flow channel, a sealing cover plate with a mounting plate is arranged at the upper end of the filtering bin, and the woven filtering cloth is fixed by a mounting rod through a bolt; according to the spinning solution filtering equipment for cellulose acetate fiber cloth production, through the synergistic effect of vacuum defoaming and trapezoidal turbulence filtering, the problems of bubble interference, incomplete filtering and secondary pollution are thoroughly solved, and the filtering efficiency of a spinning solution for cellulose acetate fiber cloth production is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of spinning solution filtration technology, specifically a spinning solution filtration device for the production of acetate fiber cloth. Background Technology

[0002] Fiber acetate fabric is made from cellulose acetate extracted from wood pulp or cotton linters. The cellulose acetate is produced through esterification and then dissolved in acetone to form a spinning solution. This solution is then spun into continuous fibers using dry or wet spinning. Physical treatments such as stretching and crimping enhance fiber strength. Finally, warping, weaving, dyeing, and finishing processes produce an environmentally friendly fabric with silk-like luster, moisture absorption, breathability, and antistatic properties. It is widely used in clothing, home furnishings, and the medical field. The production process requires precise control of parameters such as the degree of esterification, solution concentration, and spinning speed to ensure stable product performance. The spinning solution used in the production of fiber acetate fabric is a viscous, transparent liquid formed by esterification of cellulose acetate extracted from wood pulp or cotton linters and dissolving it in acetone. Its preparation requires strict control of acetic acid concentration, esterification degree, solution concentration, and temperature to ensure uniform viscosity and the absence of impurities. In subsequent dry or wet spinning, the solution is extruded through a spinneret, directly affecting the fiber strength, luster, and the moisture absorption, breathability, and antistatic properties of the finished fabric.

[0003] Based on existing spinning solution filtration equipment used in the production of acetate fiber cloth, it has been found that during the filtration operation, unexpected situations such as air bubbles interfering with filtration efficiency, secondary pollution, and incomplete filtration can easily occur. Specifically, air bubbles in the spinning solution can occupy the pores of the filter material, reducing the effective filtration area and leading to an increase in filtration pressure differential. During high-speed filtration, the collapse of air bubbles may release undissolved particles, forming new sources of impurities. Based on this, this utility model designs a spinning solution filtration device for the production of acetate fiber cloth to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a spinning solution filtration device for the production of acetate fiber cloth, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A spinning solution filtration device for the production of cellulose acetate fabric includes a support frame, with a defoaming mechanism and a trapezoidal filtration mechanism above the support frame. The defoaming mechanism includes a liquid guide hopper fixed on the support frame, with the upper end of the liquid guide hopper connected to a defoaming chamber. The left end of the defoaming chamber is provided with an injection pipe, and the right end is connected to a vacuum pump. The lower end of the liquid guide hopper is connected to a drain pipe. The trapezoidal filtration mechanism includes a filtration chamber communicating with the defoaming chamber. The filtration chamber is provided with a first L-shaped infusion plate and a second L-shaped infusion plate forming a trapezoidal flow channel. A woven filter cloth is provided on the right side of the flow channel. The upper end of the filtration chamber is provided with a sealing cover plate with an installation plate, and the woven filter cloth is fixed by bolts on an installation rod.

[0007] Optionally, the drain pipe is connected to the infusion pipeline via a liquid pump body, and the infusion pipeline passes through the left side wall of the filter chamber.

[0008] Optionally, the filter chamber is also provided with a liquid down slope, the left side of which is connected to the trapezoidal flow channel, and the right end of the liquid down slope is provided with a liquid guide plate, and a drain channel is provided at the joint of the two liquid guide plates.

[0009] Optionally, a threaded seat is fixedly installed on the outer wall of the filter chamber, and a threaded rod is internally threaded to the threaded seat. A limiting pressure plate is fixedly installed at the upper end of the threaded rod, and a limiting nut is provided on the outer side of the threaded rod. The sealing cover is pressed onto the filter chamber by the limiting structure formed by the threaded seat, the threaded rod, the limiting pressure plate, and the limiting nut.

[0010] Optionally, the defoaming chamber and the liquid guide hopper are integrally formed from stainless steel.

[0011] Optionally, the mounting rod is a detachable structure, and its two ends are fixed by bolts on the mounting plate.

[0012] Optionally, the limiting structure consisting of the threaded seat, threaded rod, limiting pressure plate and limiting nut is symmetrically arranged at the four corners of the upper surface of the filter chamber.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, a defoaming mechanism is provided. Compared with the traditional static method, the combination of vacuum pump and defoaming chamber greatly improves the defoaming efficiency.

[0015] 2. In this utility model, a trapezoidal filtration mechanism is provided. The gradually narrowing flow channel formed by the first L-shaped infusion plate and the second L-shaped infusion plate increases the liquid flow rate. Combined with the gradient filtration of the double-layer woven filter cloth, the impurity retention rate is greatly improved. Moreover, the quick disassembly and assembly design of the mounting rod effectively shortens the filter cloth replacement time. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from a frontal view.

[0018] Figure 3 This is a three-dimensional top view of the structure of this utility model;

[0019] Figure 4 This is a three-dimensional, bottom-view structural diagram of the present invention;

[0020] Figure 5 This is a top view of the structure of this utility model;

[0021] Figure 6 This is a three-dimensional sectional view of the structure of this utility model. Figure 1 ;

[0022] Figure 7 This is a three-dimensional sectional view of the structure of this utility model. Figure 2 ;

[0023] Figure 8 This is a three-dimensional sectional view of the structure of this utility model. Figure 3 .

[0024] In the diagram: 1. Support frame; 2. Defoaming mechanism; 201. Defoaming chamber; 202. Liquid guide hopper; 203. Injection pipe; 204. Vacuum pump; 205. Drain pipe; 206. Pump body; 207. Infusion pipeline; 3. Trapezoidal filtration mechanism; 301. Filtration chamber; 302. First L-shaped infusion plate; 303. Second L-shaped infusion plate; 304. Sealing cover; 305. Mounting plate; 306. Mounting rod; 307. Woven filter cloth; 308. Liquid slope; 309. Liquid guide plate; 310. Drain channel; 311. Threaded seat; 312. Threaded rod; 313. Limiting pressure plate; 314. Limiting nut. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] 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.

[0028] Please see Figures 1-8 In this embodiment of the present invention, a spinning solution filtration device for the production of cellulose acetate fabric includes a support frame 1, a defoaming mechanism 2 and a trapezoidal filtration mechanism 3 above the support frame 1; the defoaming mechanism 2 includes a liquid guide hopper 202 fixed on the support frame 1, the upper end of the liquid guide hopper 202 is connected to a defoaming chamber 201, the left end of the defoaming chamber 201 is provided with an injection pipe 203 and the right end is connected to a vacuum pump 204, and the lower end of the liquid guide hopper 202 is connected to a drain pipe 205; the trapezoidal filtration mechanism 3 includes a filtration chamber 301 communicating with the defoaming chamber 201, the filtration chamber 301 is provided with a first L-shaped infusion plate 302 and a second L-shaped infusion plate 303 forming a trapezoidal flow channel, the right side of the flow channel is provided with a woven filter cloth 307, the upper end of the filtration chamber 301 is provided with a sealing cover plate 304 with an installation plate 305, and the installation rod 306 fixes the woven filter cloth 307 by bolts.

[0029] Before the equipment is put into operation, the following key connection operations must be completed:

[0030] Electrical connection: Connect vacuum pump 204 to the frequency converter control cabinet, connect the 220V power supply of liquid pump body 206 to the PLC control terminal, and set the target negative pressure value of vacuum pump 204 to -0.06MPa and the flow threshold of liquid pump body 206 to 0.4m / s in the control interface;

[0031] Pipe connection: The injection pipe 203 at the left end of the defoaming chamber 201 is connected to the output end of the spinning solution storage tank through a DN50 sanitary clamp connector. A polytetrafluoroethylene sealing gasket needs to be installed at the interface.

[0032] The support frame 1 is welded from steel, and the upper platform is equipped with a defoaming mechanism 2 and a trapezoidal filter mechanism 3. The defoaming chamber 201 is connected to the liquid guide hopper 202, which is designed at a specific tilt angle to ensure complete liquid flow. A vacuum pump 204 is connected to the defoaming chamber 201 through a pipeline to form a negative pressure system.

[0033] The defoaming chamber 201 is made of corrosion-resistant stainless steel with a specific volume. The bottom drain pipe 205 of the liquid guide hopper 202 is connected to the liquid pump body 206 by a flange structure.

[0034] The filter chamber 301 contains a first L-shaped infusion plate 302 and a second L-shaped infusion plate 303 that cooperate with each other, forming a tapered trapezoidal flow channel structure. The woven filter cloth uses a gradient configuration of multiple layers of filter mesh, which is fixed by a detachable mounting rod 306. The sealing cover 304 is equipped with a threaded limiting structure, and the limiting pressure plate 313 applies appropriate pre-tightening force to ensure sealing. The surface of the liquid slope 308 is treated with an anti-stick coating, and the liquid guide plate 309 is designed with a V-shaped structure at a specific angle.

[0035] A threaded seat 311 is fixedly installed on the outer wall of the filter chamber 301. A threaded rod 312 is connected to the inside of the threaded seat 311. A limiting pressure plate 313 is fixedly installed at the upper end of the threaded rod 312. A limiting nut 314 is provided on the outside of the threaded rod 312. The sealing cover 304 is pressed onto the filter chamber 301 by the limiting structure formed by the threaded seat 311, the threaded rod 312, the limiting pressure plate 313 and the limiting nut 314.

[0036] The working principle of this invention is as follows: After the spinning solution is injected into the defoaming chamber 201 through the injection pipe 203, the vacuum pump 204 evacuates the sealed chamber to -0.06MPa, causing the bubbles on the liquid surface to expand and burst under negative pressure, defoaming for 15-30 minutes. The defoamed spinning solution is collected through the guide hopper 202 and pumped into the filter chamber 301 through the delivery pipe 207 by the pump body 206. The liquid first impacts the first L-shaped delivery plate 302 to form primary turbulence, and some large particles are intercepted by the first layer of woven filter cloth 307; then it accelerates along the slope of the second L-shaped delivery plate 303, causing fine impurities to be intercepted by the second layer of filter cloth 307. The filtered spinning solution is guided by the lower liquid slope 308 and flows into the drain channel 310 through the guide plate 309 for output. The entire process is completed in a closed environment formed by the sealing cover plate 304 and the limiting pressure plate 313.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spinning solution filtration device for the production of acetate fiber cloth, comprising a support frame (1), characterized in that: The support frame (1) is provided with a defoaming mechanism (2) and a trapezoidal filter mechanism (3) above it; the defoaming mechanism (2) includes a liquid guide hopper (202) fixed on the support frame (1), the upper end of the liquid guide hopper (202) is connected to the defoaming chamber (201), the left end of the defoaming chamber (201) is provided with an injection pipe (203), the right end is connected to a vacuum pump (204), and the lower end of the liquid guide hopper (202) is connected to a drain pipe (205); the trapezoidal filter mechanism (3) includes a filter chamber (301) connected to the defoaming chamber (201), the filter chamber (301) is provided with a first L-shaped infusion plate (302) and a second L-shaped infusion plate (303) forming a trapezoidal flow channel, the right side of the flow channel is provided with a woven filter cloth (307), the upper end of the filter chamber (301) is provided with a sealing cover plate (304) with an installation plate (305), and the installation rod (306) is fixed to the woven filter cloth (307) by bolts.

2. The spinning solution filtration device for acetate fiber cloth production according to claim 1, characterized in that: The drain pipe (205) is connected to the infusion pipe (207) through the liquid pump body (206), and the infusion pipe (207) passes through the left side wall of the filter chamber (301).

3. The spinning solution filtration device for the production of acetate fiber cloth according to claim 1, characterized in that: The filter chamber (301) is also provided with a liquid down slope (308). The left side of the liquid down slope (308) is connected to the trapezoidal flow channel. The right end of the liquid down slope (308) is provided with a liquid guide plate (309). A drain channel (310) is provided at the junction of the two liquid guide plates (309).

4. The spinning solution filtration device for the production of acetate fiber cloth according to claim 1, characterized in that: A threaded seat (311) is fixedly installed on the outer wall of the filter chamber (301). A threaded rod (312) is threadedly connected to the inside of the threaded seat (311). A limiting pressure plate (313) is fixedly installed at the upper end of the threaded rod (312). A limiting nut (314) is provided on the outer side of the threaded rod (312). The sealing cover (304) is pressed onto the filter chamber (301) by the limiting structure formed by the threaded seat (311), the threaded rod (312), the limiting pressure plate (313), and the limiting nut (314).

5. A spinning solution filtration device for the production of acetate fiber cloth according to claim 1, characterized in that: The defoaming chamber (201) and the liquid guide hopper (202) are integrally formed of stainless steel.

6. A spinning solution filtration device for the production of acetate fiber cloth according to claim 1, characterized in that: The mounting rod (306) is a detachable structure, and its two ends are fixed by bolts on the mounting plate (305).

7. A spinning solution filtration device for the production of acetate fiber cloth according to claim 4, characterized in that: The limiting structure consisting of the threaded seat (311), threaded rod (312), limiting pressure plate (313) and limiting nut (314) is symmetrically arranged at the four corners of the upper surface of the filter chamber (301).

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