Desizing equipment and rayon pretreatment process

Abstract

The present invention discloses a desizing device and a rayon pretreatment process, comprising a liquid removal device, the liquid removal device including a second rotating shaft capable of rotating along its own axis, the second rotating shaft including two symmetrically arranged arc portions, the arc portions being mounted with a liquid absorbing component that rotates with the second rotating shaft, the outer wall of the liquid absorbing component being capable of abutting the fabric; the liquid removal device also includes a roller capable of moving left and right, the roller being located on the side of the second rotating shaft away from the fabric, and the roller moving rightward can press into the liquid absorbing component. The present invention provides a desizing device and a rayon pretreatment process that improves environmental performance while ensuring desizing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of desizing equipment, and more particularly to a desizing equipment and a pre-treatment process for rayon. Background Art

[0002] The current pre-treatment process of rayon includes a desizing step. During desizing, the fabric is soaked in alkali solution to precipitate the sizing on the fabric. Since the fabric stays in the alkali solution pool for a long time, the sizing is mixed with the alkali solution after precipitation, and the alkali concentration decreases, resulting in a decrease in the desizing efficiency of the fabric. In particular, the amount of sizing precipitation is very high in the early stage of desizing, which has the greatest impact on the desizing efficiency. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a desizing device and a rayon pretreatment process, which improve environmental protection while ensuring desizing efficiency.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a desizing device, comprising a liquid removal device, wherein the liquid removal device comprises a second rotating shaft, wherein the second rotating shaft can rotate along its own axis, the second rotating shaft comprises two symmetrically arranged arc portions, the arc portions are equipped with a liquid absorption component, the liquid absorption component rotates with the second rotating shaft, and the outer wall of the liquid absorption component can abut against the cloth; the liquid removal device also comprises a roller, wherein the roller can move left and right, the roller is located on the side of the second rotating shaft away from the cloth, and the roller can press into the liquid absorption component when it moves to the right; the liquid absorption component comprises an end face, a movable plate is connected between the end face and the end face of another liquid absorption component, the movable plate can move left and right, and when the movable plate moves, it drives the end face to move synchronously, so that the liquid absorption component stretches or contracts.

[0005] The present invention is further configured such that the second rotating shaft also includes two symmetrically arranged planar portions, the planar portions are equipped with slide rails, the slide rails are equipped with the movable plate, the movable plate includes end portions located at both ends, and the end portions are connected to cylinders.

[0006] The present invention is further configured to include a fixing frame, the fixing frame is slidably connected to a sliding seat, the sliding seat can slide left and right along the inner wall of the fixing frame, the sliding seat is equipped with the roller, and the roller can rotate along its own axis.

[0007] The present invention is further configured such that the second rotating shaft is slidably connected to a slide plate, the slide plate can move radially inward and outward along the second rotating shaft, and the slide plate includes an extension portion, which can extend out of the arc portion to squeeze and expand the liquid absorbing component.

[0008] The present invention is further configured to include a rotating shaft 1, which can rotate along its own axis, the outer wall of the rotating shaft 1 abuts against the slide, the extension portion is located at the end of the slide away from the rotating shaft 1, and the extension portion abuts against the inner wall of the liquid-absorbing component.

[0009] The present invention is further configured to further include a fixed shaft, the fixed shaft passes through the second rotating shaft, and the fixed shaft is connected to the second rotating shaft via a bearing.

[0010] The present invention is further configured such that the rotating shaft 1 passes through the fixed shaft, and the cross section of the rotating shaft 1 is elliptical.

[0011] The present invention is further configured such that the second rotating shaft is provided with a slot body, and the first rotating shaft passes through the slot body.

[0012] The present invention is further configured such that two liquid removal devices are provided, and the two liquid removal devices are located on the left and right sides of the cloth and are distributed up and down.

[0013] The present invention adopts the following technical solution: a rayon pre-treatment process, comprising the following steps: ① singeing the surface of the fabric; ② placing the fabric in a desizing device for desizing; ③ scouring the fabric; ④ bleaching; ⑤ placing the fabric in a mercerizing machine for mercerizing;

[0014] In summary, the present invention has the following beneficial effects:

[0015] After a brief soak in the lye, the fabric leaves the tank. A liquid suction element is installed to draw out the mixture of lye and sizing material from the fabric, preventing excess sizing in the tank from causing a decrease in lye concentration and affecting desizing efficiency. The lye tank concentration can be set to a lower value without affecting desizing efficiency, while also reducing the amount of lye added, resulting in a more environmentally friendly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic cross-sectional view of the desizing device in the embodiment;

[0017] Figure 2 is a schematic cross-sectional view of a liquid removal device in an embodiment;

[0018] Figure 3 for Figure 2 Schematic diagram of the local cross-section in the MM direction.

[0019] Figure numerals: fixed frame 1, sliding seat 2, roller 21, liquid accumulation pool body 3, rotating shaft 1 4, slide plate 41, extension portion 411, fixed shaft 5, rotating shaft 2 6, arc portion 61, plane portion 62, groove body 63, slide rail 64, movable plate 65, end portion 651, liquid absorption component 7, end surface 71, cloth 8, cylinder 9. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] This embodiment discloses a desizing device and a rayon pretreatment process, which includes: ① singeing the surface of a fabric 8; ② placing the fabric 8 in the desizing device for desizing; ③ scouring the fabric 8; ④ bleaching; and ⑤ placing the fabric 8 in a mercerizing machine for mercerizing.

[0022] During desizing of fabric 8, an alkaline desizing process is employed, wherein fabric 8 is passed through an alkaline solution to remove the sizing residue. Desizing produces a significant amount of waste, which is not environmentally friendly. Therefore, desizing is performed multiple times to achieve energy conservation and emission reduction. The desizing equipment in this embodiment is most effective when used for the first desizing operation.

[0023] like Figure 1 、 Figure 2 As shown, the desizing equipment includes a liquid removal device, and two liquid removal devices are provided. The two liquid removal devices are located on the left and right sides of the cloth 8 and are distributed up and down.

[0024] The liquid removal device includes a second rotating shaft 6, which is driven by a motor (not shown) to rotate along its axis. The second rotating shaft 6 comprises two symmetrically arranged arc portions 61 and two symmetrically arranged flat portions 62. Both the arc portions 61 and the flat portions 62 form the outer wall of the second rotating shaft 6. The line connecting the two flat portions 62 forms a 90-degree angle with the line connecting the two arc portions 61.

[0025] like Figure 2 、 Figure 3 As shown, the second rotating shaft 6 is installed with a fixed shaft 5, the fixed shaft 5 passes through the second rotating shaft 6, the fixed shaft 5 and the second rotating shaft 6 are connected through bearings, and both ends of the fixed shaft 5 extend out of the second rotating shaft 6 and are fixed by a bracket.

[0026] like Figure 2 As shown, the arc portion 61 is fixedly mounted with a liquid absorbing component 7, which is made of sponge and is arc-shaped. The inner wall of the liquid absorbing component 7 fits the arc portion 61, and the liquid absorbing component 7 rotates with the rotating shaft 2 6. The outer wall of the liquid absorbing component 7 can abut against the fabric 8. Figure 1As fabric 8 moves upward and passes the outer surface of liquid-absorbing element 7, it absorbs liquid from fabric 8, removing both the desizing alkali solution and the mixed slurry. Since the initial desizing process produces the most slurry, this reduces the effective concentration of the alkali solution, impacting desizing efficiency. This requires increasing the amount of alkali solution added, which is not environmentally friendly. As fabric 8 moves upward, it continues to react with the alkali solution adhering to it, drawing the precipitated slurry out through liquid-absorbing element 7, thereby reducing the amount of slurry mixed with the alkali solution and affecting its concentration.

[0027] like Figure 2 As shown, the liquid removal device also includes a fixed frame 1, which is slidably connected to a sliding seat 2, and the sliding seat 2 can slide left and right along the inner wall of the fixed frame 1. The sliding seat 2 is equipped with a roller 21, which can move left and right with the sliding seat 2 and can rotate along its own axis. The roller 21 is located on the side of the rotating shaft 2 6 away from the cloth 8. When the roller 21 moves to the right, it can press into the liquid absorbing component 7. At the same time, in conjunction with the rotation of the liquid absorbing component 7, the roller 21 presses out the liquid in the liquid absorbing component 7. A liquid accumulating pool body 3 is provided below the fixed frame 1, and the squeezed liquid can flow into the liquid accumulating pool body 3.

[0028] The liquid absorbing component 7 includes end surfaces 71 at both ends of the arc direction, and a movable plate 65 is connected between the end surface 71 and the end surface 71 of the other liquid absorbing component 7, and the movable plate 65 can move left and right. Specifically, the plane portion 62 is equipped with a slide rail 64, and the slide rail 64 is equipped with a movable plate 65. Figure 2 、 Figure 3 The movable plate 65 includes end portions 651 at both ends, the end portions 651 are connected to the cylinder 9, and the movable plate 65 is moved under the drive of the cylinder 9. The air pipe of the cylinder 9 is equipped with a rotary joint to prevent winding.

[0029] like Figure 2 As shown, the movable plate 65 is connected to the end surfaces 71 of the two liquid-absorbing components 7 at each end along its width. When the movable plate 65 moves, the end surfaces 71 move synchronously, causing the liquid-absorbing components 7 to expand or contract. Specifically, when one liquid-absorbing component 7 abuts the fabric 8, the two end surfaces 71 of that side of the liquid-absorbing component 7 move away from the fabric 8, stretching the liquid-absorbing component 7. This expands the outer wall surface of the liquid-absorbing component 7 (i.e., the wall facing the fabric 8), increasing the air gaps between its internal pores, making it easier to absorb liquid from the fabric 8. Simultaneously, the two end surfaces 71 of the other liquid-absorbing component 7 are compressed by the movable plate 65, creating a squeezing effect and improving squeezing efficiency.

[0030] like Figure 2 、 Figure 3As shown, the liquid removal device also includes a rotating shaft 4, the cross-section of which is elliptical. The rotating shaft 4 passes through the fixed shaft 5, and both ends of the rotating shaft 4 extend out of the fixed shaft 5. One end of the rotating shaft 4 is driven by a motor, and the other end is rotatably connected to an auxiliary support bracket. The rotating shaft 4 can rotate along its own axis.

[0031] like Figure 2 As shown, the second shaft 6 is provided with a groove 63, one end of which extends through the inner wall of the second shaft 6 and the other end extends through the arc portion 61. A slide 41 is slidably connected to the second shaft 6. Slide 41 is inserted into the groove 63 and can move radially inward and outward along the second shaft 6. Slide 41 includes an extension 411 with an arc-shaped cross-section. Extension 411 is located at the end of the slide 41 away from the first shaft 4. Extension 411 can extend beyond the arc portion 61 to squeeze and stretch the liquid absorbent component 7. Specifically, the end of the slide 41 away from the extension 411 abuts the outer wall of the first shaft 4, and the extensions 411 abut the inner wall of the liquid absorbent component 7. When the first shaft 4 pushes the two slides 41 outward, the slides 41 act on the stretched liquid absorbent component 7, and the extensions 411 stretch the liquid absorbent component 7, increasing the air gap on the outer wall of the liquid absorbent component 7 and improving the liquid absorption effect. When the slide plate 41 acts on the retracted liquid absorbing component 7, the extension portion 411 cooperates with the roller 21 to squeeze the liquid absorbing component 7 to improve the water pressing efficiency.

[0032] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A desizing device for desizing a cloth (8), characterized in that: The liquid removal device comprises a second rotating shaft (6), the second rotating shaft (6) can rotate along its own axis, the second rotating shaft (6) comprises two symmetrically arranged arc portions (61), the arc portions (61) are provided with a liquid absorbing component (7), the liquid absorbing component (7) rotates along with the second rotating shaft (6), and the outer wall of the liquid absorbing component (7) can abut against the cloth (8); The liquid removal device further comprises a roller (21), the roller (21) being movable left and right, the roller (21) being located on the side of the second rotating shaft (6) away from the cloth (8), and the roller (21) being movable rightward to press into the liquid absorbing component (7); The liquid absorbing component (7) includes an end surface (71), and a movable plate (65) is connected between the end surface (71) and the end surface (71) of another liquid absorbing component (7). The movable plate (65) can move left and right. When the movable plate (65) moves, the end surface (71) is driven to move synchronously, so that the liquid absorbing component (7) is stretched or contracted. The second rotating shaft (6) is slidably connected to a slide plate (41), and the slide plate (41) can move radially inward and outward along the second rotating shaft (6). The slide plate (41) includes an extension portion (411), and the extension portion (411) can extend out of the arc portion (61) to squeeze and open the liquid absorbing component (7); It also includes a rotating shaft (4), the rotating shaft (4) being capable of rotating along its own axis, the outer wall of the rotating shaft (4) being in contact with the slide (41), the extending portion (411) being located at an end of the slide (41) away from the rotating shaft (4), and the extending portion (411) being in contact with the inner wall of the liquid absorbing component (7); It also includes a fixed shaft (5), the fixed shaft (5) passes through the second rotating shaft (6), and the fixed shaft (5) and the second rotating shaft (6) are connected via a bearing; The rotating shaft (4) passes through the fixed shaft (5), and the cross section of the rotating shaft (4) is elliptical.

2. A desizing device according to claim 1, characterized in that, The second rotating shaft (6) further comprises two symmetrically arranged planar portions (62), the planar portions (62) being provided with slide rails (64), the slide rails (64) being provided with the movable plate (65), the movable plate (65) comprising end portions (651) at both ends, the end portions (651) being connected to the cylinder (9).

3. A desizing device according to claim 1, characterized in that, The invention also comprises a fixed frame (1), wherein the fixed frame (1) is slidably connected to a sliding seat (2), wherein the sliding seat (2) can slide left and right along the inner wall of the fixed frame (1), and the sliding seat (2) is installed with the roller (21), and the roller (21) can rotate along its own axis.

4. A desizing device according to claim 1, characterized in that, The second rotating shaft (6) is provided with a groove body (63), and the first rotating shaft (4) passes through the groove body (63).

5. A desizing device according to claim 1, characterized in that, Two liquid removal devices are provided, and the two liquid removal devices are located on the left and right sides of the cloth (8) and are distributed up and down.

6. A rayon pretreatment process, using a desizing device according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: ① performing singeing treatment on the surface of the cloth (8); ② placing the cloth (8) into the desizing equipment described in any one of claims 1 to 5 for desizing; ③ scouring the cloth (8); ④ bleaching; ⑤ placing the cloth (8) into a mercerizing machine for mercerizing treatment.

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