A low-tension washing device for knitted fabrics

Abstract

This invention provides a low-tension washing device for knitted fabrics, including a washing machine housing. A partition is fixedly installed in the middle of the washing machine housing, dividing it into a bubble washing tank and a clean water washing tank. A lower lifting conveyor mechanism and an upper restricting conveyor mechanism are respectively installed in the bubble washing tank and the clean water washing tank, respectively, and are mounted on the washing machine housing. Feed rollers and output rollers are rotatably installed at both ends of the washing machine housing, while a transition roller is rotatably installed in the middle above, located below a water spray pipe assembly. The water spray pipe assembly is fixedly installed in the middle above the washing machine housing. This invention uses upper and lower belts for surface contact clamping and conveying, replacing line contact, dispersing the conveying force, and avoiding stress concentration and tensile deformation. The flow holes in the conveyor belt, combined with the bubble water flow, achieve double-sided cleaning and high peeling efficiency. A stirring wheel agitates the liquid, enhancing penetration and flushing impurities, preventing contamination and cleaning dead corners, and is suitable for various knitted fabrics.

Description

Technical Field

[0001] This utility model belongs to the field of knitted fabric washing technology, and in particular relates to a low-tension knitted fabric washing device. Background Technology

[0002] Knitted fabrics require washing during production to remove residual oil, impurities, or excess dyes and auxiliaries from the weaving process. However, low-tension knitted fabrics are highly elastic and easily deformed. Traditional washing equipment typically uses numerous rollers for conveying, with the rollers making line contact with the fabric. During the washing process, this often results in pulling and tugging, causing stress concentration in localized areas of the fabric. This stress concentration not only causes stretching deformation and dimensional instability but can also lead to surface damage such as pilling and snagging due to mechanical friction, severely impacting fabric quality. Furthermore, the line-contact conveying method makes knitted fabrics prone to sagging or tangling in the washing tank, resulting in uneven washing solution penetration, dirt residue, and difficulty in guaranteeing cleaning efficiency and effectiveness. For sensitive fabrics such as wool, silk, and spandex blends, the drawbacks of traditional multi-roller conveying are even more pronounced.

[0003] Therefore, it is essential to invent a low-tension washing device for knitted fabrics. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a low-tension washing equipment for knitted fabrics, including a washing machine housing, a partition, a bubble washing tank, a clean water washing tank, a lower lifting conveyor mechanism, an upper limiting conveyor mechanism, an infeed roller, an outfeed roller, a transition roller, and a water spray pipe assembly. The partition is fixedly installed in the middle of the washing machine housing, dividing it into the bubble washing tank and the clean water washing tank. The lower lifting conveyor mechanism and the upper limiting conveyor mechanism are respectively installed in the bubble washing tank and the clean water washing tank, and are mounted on the washing machine housing. The infeed roller and the outfeed roller are rotatably installed above both ends of the washing machine housing, and the transition roller is rotatably installed above the middle. The transition roller is located below the water spray pipe assembly, and the water spray pipe assembly is fixedly installed above the middle of the washing machine housing.

[0005] Preferably, a transition roller and a water spray pipe assembly are sequentially arranged above the partition, the bubble washing tank and the clean water washing tank are separated by the partition, a bubble generator is installed at the bottom of the bubble washing tank of the washing machine housing, and a feed roller is rotatably arranged on one side above the bubble washing tank.

[0006] Preferably, the lower lifting conveyor and the upper limiting conveyor have the same structure in the bubble washing tank and the clean water washing tank, and there is a spacing between the lower lifting conveyor and the upper limiting conveyor for conveying knitted fabric.

[0007] Preferably, the lower lifting and conveying mechanism includes a conveying shaft, a conveying roller, a deflector wheel, a drive component, a conveyor belt, and flow holes. There are two conveying shafts, each with a conveying roller in the middle and deflector wheels symmetrically installed at both ends. A conveyor belt is mounted on the conveying roller between the two conveying shafts, and numerous flow holes are evenly distributed through the conveyor belt. The two conveying shafts are rotatably mounted on the washing machine housing, with one end of one of the conveying shafts rotating through the washing machine housing and fixed to the output end of the drive component fixedly installed externally.

[0008] Preferably, the actuating wheel is disposed on both sides of the conveyor roller and the conveyor belt, and the actuating wheel is provided with actuating plates arranged in a circular array.

[0009] Preferably, a limiting shaft is provided on the inner side of the conveyor belt. The limiting shaft is rotatably installed inside the washing machine housing. The limiting shaft is arranged horizontally above the inner side of the conveyor belt of the lower lifting conveyor mechanism, and the limiting shaft is arranged horizontally below the inner side of the conveyor belt of the upper limiting conveyor mechanism. The inner surface of the conveyor belt is in rolling contact with the limiting shaft.

[0010] Compared with the prior art, the present invention has the following beneficial effects: This invention replaces the traditional line contact of rollers with a surface contact conveying method that uses a conveyor belt to form a clamping surface by setting up a lower lifting conveying mechanism and an upper limiting conveying mechanism. The surface contact of the conveyor belt can evenly distribute the conveying force on the knitted fabric, avoiding stress concentration caused by single-point force, and effectively solving the problem of tensile deformation caused by forward pulling and backward pulling in multi-roller conveying. It is especially suitable for low-tension knitted fabrics with high elasticity and easy deformation, ensuring the dimensional stability of the fabric and the integrity of the loop structure.

[0011] The conveyor belt of this invention features evenly distributed flow holes, allowing the washing liquid to freely penetrate and circulate from the upper and lower surfaces of the knitted fabric. Combined with the gentle turbulent water flow generated by the bubble generator in the bubble washing tank, it can achieve double-sided cleaning without dead angles, significantly improving the efficiency of dirt removal, reducing washing liquid retention and dirt residue, and is especially suitable for the uniform treatment of double-sided knitted fabrics (such as rib knit fabric and sweatshirt fabric).

[0012] This invention features a circular array of agitator wheels on both sides of the conveyor belt. As these wheels rotate synchronously with the shaft and conveyor rollers, they actively agitate the surrounding liquid, creating a directional, disturbed water flow. This flow not only helps the washing solution penetrate into the gaps between the knitted fabric fibers, enhancing the gas-liquid mixing effect in the bubble washing tank (working in conjunction with the bubble generator) and improving dirt removal efficiency, but also washes the surface of the conveyor belt and the flow holes, reducing the retention of impurities such as fibers and dye particles, and preventing secondary pollution. Simultaneously, the disturbance of the liquid by the agitator wheels balances the water flow distribution within the washing tank, preventing cleaning dead zones caused by static or localized fabric accumulation. This is particularly suitable for the uniform treatment of complex jacquard knitted fabrics or double-sided colored fabrics. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a partial cross-sectional structural diagram of the present invention.

[0015] Figure 3 This is a top view of the structure of this utility model.

[0016] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the structure at point A.

[0017] In the picture: 1. Washing machine housing; 2. Partition plate; 3. Bubble washing tank; 4. Clean water washing tank; 5. Lower lifting and conveying mechanism; 51. Conveying shaft; 52. Conveying roller; 53. Actuating wheel; 54. Drive unit; 55. Conveying belt; 56. Flow hole; 6. Upper limiting conveying mechanism; 7. Feeding roller; 8. Feeding roller; 9. Transition roller; 10. Water spray pipe assembly; 11. Bubble generator; 12. Limiting shaft. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0020] As attached Figure 1 To be continued Figure 4 As shown: This utility model provides a low-tension washing device for knitted fabrics, including a washing machine housing 1, a partition 2, a bubble washing tank 3, a clean water washing tank 4, a lower lifting conveyor mechanism 5, an upper limiting conveyor mechanism 6, an infeed roller 7, an outfeed roller 8, a transition roller 9, and a water spray pipe assembly 10. The partition 2, which is fixedly installed in the middle of the washing machine housing 1, divides itself into the bubble washing tank 3 and the clean water washing tank 4. The lower lifting conveyor mechanism 5 and the upper limiting conveyor mechanism 6, which are respectively installed in opposite directions, are mounted on the washing machine housing 1. The infeed roller 7 and the outfeed roller 8 are rotatably installed above both ends of the washing machine housing 1, while the transition roller 9 is rotatably installed above the middle. The transition roller 9 is located below the water spray pipe assembly 10, which is fixedly installed above the middle of the washing machine housing 1.

[0021] Furthermore, the partition 2 is made of stainless steel plate and is vertically welded and fixed to the middle of the interior of the washing machine housing 1, dividing the inner cavity of the washing machine housing 1 into two adjacent bubble washing tanks 3 and clean water washing tanks 4. A transition roller 9 and a water spray pipe assembly 10 are sequentially arranged above the partition 2 from bottom to top: the transition roller 9 is rotatably mounted on the washing machine housing 1 via deep groove ball bearings at both ends, and its axis is parallel to the partition 2; the water spray holes evenly distributed at the bottom of the water spray pipe assembly 10 are fixed to the top of the washing machine housing 1 by pipe clamps, and the water spray direction of the water spray pipe assembly 10 is vertically downward, covering the area directly above the transition roller 9.

[0022] Furthermore, a bubble generator 11 (model QFB-50, air output 50L / min) is fixedly installed at the bottom of the bubble washing tank 3 by bolts. Its air outlet is connected to a microporous aeration pipe, which is arranged horizontally along the bottom of the washing machine casing 1 to ensure uniform distribution of bubbles. A feed roller 7 is rotatably installed on the top left side of the bubble washing tank 3. The feed roller 7, the discharge roller 8 and the transition roller 9 have the same structure and are rotatably connected to the washing machine casing 1 by bearings.

[0023] Furthermore, a lower lifting conveyor mechanism 5 and an upper restricting conveyor mechanism 6 are symmetrically installed in the bubble washing tank 3 and the clean water washing tank 4, respectively (one set in each tank). The two mechanisms have identical structures and are arranged parallel to each other, with a conveying gap between them. The conveying surface of the lower lifting conveyor mechanism 5 (the upper surface of the conveyor belt 55) is flush with the liquid level of the bubble washing tank 3 (the liquid level is about 10-20mm below the upper surface of the conveyor belt 55), and the conveying surface of the upper restricting conveyor mechanism 6 (the lower surface of the conveyor belt 55) is 5-10mm away from the liquid level, ensuring that the knitted fabric is completely immersed in the washing liquid when it is held between the two conveyor belts 55 to complete the cleaning process.

[0024] Furthermore, the lower lifting conveyor mechanism 5 consists of two parallel conveyor shafts 51, a conveyor roller 52, a deflector wheel 53, a drive component 54 (a servo motor of model MR-J4-10A), a conveyor belt 55, and a flow hole 56. Each conveyor shaft 51 is rotatably mounted on the left and right side walls of the washing machine housing 1 via tapered roller bearings. The left end of the left conveyor shaft 51 extends out of the washing machine housing 1 and is fixedly connected to the output shaft of the drive component 54 via a coupling. The conveyor roller 52 is fixed to the middle position of the conveyor shaft 51 by a flat key, and its outer surface is interference-fitted with the inner surface of the conveyor belt 55 (to ensure power transmission). The deflector wheel 53 is a circular disc, symmetrically welded to the left and right ends of the conveyor shaft 51 (located outside the conveyor roller 52). Six deflector plates are evenly distributed along the edge of the disc, with an angle of 60° between adjacent plates.

[0025] Furthermore, the agitator wheel 53 is located on the left and right sides of the conveyor roller 52 and the conveyor belt 55 (i.e., on the left and right sides of the inner cavity of the washing machine housing 1), with the outer edge of its agitator plate spaced 2-3 mm from the side of the conveyor belt 55 (to avoid interference). When the drive component 54 drives the conveyor shaft 51 to rotate, the agitator wheel 53 rotates synchronously with the conveyor shaft 51, and its agitator plate is inserted into the washing liquid in the washing tank. By rotating and agitating the liquid, a clockwise directional water flow is formed. This water flow works in conjunction with the rising bubbles generated by the bubble generator 11 to enhance the contact efficiency between the washing liquid and the knitted fabric, and to flush the flow holes 56 on the surface of the conveyor belt 55 to prevent fiber or dye particles from clogging the fabric.

[0026] Furthermore, 3-5 limiting shafts 12 are evenly distributed along the length of the inner side of the conveyor belt 55. The limiting shafts 12 are rotatably mounted in the inner cavity of the washing machine housing 1 via bearing seats. For the lower lifting conveyor mechanism 5, the limiting shafts 12 are laterally arranged above the inner side of the conveyor belt 55 (i.e., between the upper surface of the conveyor belt 55 and the conveyor roller 52), and their outer circular surface rolls in contact with the inner upper surface of the conveyor belt 55. For the upper limiting conveyor mechanism 6, the limiting shafts 12 are arranged below the inner side of the conveyor belt 55 (i.e., between the lower surface of the conveyor belt 55 and the conveyor roller 52), and their outer circular surface rolls in contact with the inner lower surface of the conveyor belt 55. When the conveyor belt 55 becomes loose due to long-term operation or soaking in washing liquid, slight pressure is applied through rolling contact to prevent the belt from sagging or running off-center, ensuring that the conveyor belt 55 and the conveyor roller 52 remain in close contact. At the same time, the rolling friction design can reduce the belt running resistance.

[0027] The working principle is as follows: First, the knitted fabric is guided by the feed roller 7 into the bubble washing tank 3 of the washing machine housing 1. At this time, the lower lifting conveyor 5 and the upper restricting conveyor 6 form a surface contact clamp through the vertically and horizontally arranged conveyor belts 55. The fabric is gently clamped between the two belts and is driven forward by the friction between the conveyor shaft 51, the conveyor roller 52 and the conveyor belt 55. This avoids the line contact stretching of traditional roller conveyors and achieves low-tension conveying.

[0028] Next, the bubble generator 11 at the bottom of the bubble washing tank 3 releases uniform bubbles through the microporous aeration pipe. As the bubbles rise, they cause the washing liquid to churn, gently removing stains from the fabric surface and between fibers. At the same time, the agitator wheel 53 of the lower lifting conveyor mechanism 5 rotates synchronously with the conveyor shaft 51. The agitator plate on its edge stirs the washing liquid to form a clockwise directional water flow, which works in conjunction with the rising bubble flow to enhance the contact efficiency between the washing liquid and the fabric, and flushes the flow holes 56 on the surface of the conveyor belt 55 to prevent fiber or dye particles from clogging the flow holes, ensuring that the washing liquid penetrates to both sides of the fabric through the flow holes and improving the uniformity of cleaning.

[0029] Subsequently, the fabric that has completed the bubble washing is conveyed to the transition roller 9 above the partition 2. At this time, the water spray pipe group 10 (with water spray holes evenly distributed at the bottom) sprays clean water downwards to pre-rinse the residual bubble washing liquid and the initially removed stains on the fabric surface, thereby reducing the total amount of contaminants brought into the clean water washing tank 4.

[0030] After entering the clean water washing tank 4, the fabric is once again held by the lower lifting conveyor 5 and the upper restricting conveyor 6 within the tank, and deep rinsing is completed through the same surface contact low-tension conveying method. The agitator wheel 53 in the clean water washing tank 4 operates synchronously with the bubble washing tank 3 (an auxiliary spray device can be added if intensive rinsing is required) to further remove residual dyes and auxiliaries from the fabric, ensuring thorough cleaning.

[0031] Finally, the cleaned fabric is conveyed to the delivery roller 8 by the upper limiting conveyor 6 and the lower lifting conveyor 5 of the clean water washing tank 4. The fabric is then guided by the delivery roller 8 to detach from the washing machine housing 1, completing the entire low-tension washing process.

[0032] Throughout the process, the limiting shaft 12 applies slight pressure to the conveyor belt 55 through rolling contact to prevent the belt from sagging or running off-center due to slack or soaking in washing liquid, ensuring that the conveyor belt 55 is in close contact with the conveyor roller 52, maintaining a stable clamping force and conveying speed (synchronously controlled with the servo motor of the drive component 54), and ultimately achieving uniform conveying and efficient cleaning of knitted fabrics under low tension.

[0033] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A low-tension washing device for knitted fabrics, characterized in that, The washing machine includes a washing machine housing (1), a partition (2), a bubble washing tank (3), a clean water washing tank (4), a lower lifting conveyor mechanism (5), an upper limiting conveyor mechanism (6), an infeed roller (7), an outfeed roller (8), a transition roller (9), and a water spray pipe assembly (10). The partition (2) is fixedly installed in the middle of the washing machine housing (1), dividing it into the bubble washing tank (3) and the clean water washing tank (4). The bubble washing tank (3) and the clean water washing tank (4) are respectively equipped with... There are a lower lifting conveyor (5) and an upper limiting conveyor (6) arranged opposite to each other. The lower lifting conveyor (5) and the upper limiting conveyor (6) are installed on the washing machine housing (1). The upper ends of the washing machine housing (1) are rotatably installed with feed rollers (7) and feed rollers (8), while the middle upper part is rotatably installed with a transition roller (9). The transition roller (9) is located below the water spray pipe assembly (10), and the water spray pipe assembly (10) is fixedly installed in the middle upper part of the washing machine housing (1).

2. The low-tension washing equipment for knitted fabrics as described in claim 1, characterized in that: A transition roller (9) and a water spray pipe assembly (10) are arranged in sequence above the partition (2). The bubble water washing tank (3) and the clean water washing tank (4) are separated by the partition (2). A bubble generator (11) is installed at the bottom of the bubble water washing tank (3) of the washing machine housing (1). A feed roller (7) is rotatably arranged on one side above the bubble water washing tank (3).

3. The low-tension washing equipment for knitted fabrics as described in claim 2, characterized in that: The lower lifting conveying mechanism (5) and the upper limiting conveying mechanism (6) of the bubble water washing tank (3) and the clean water washing tank (4) have the same structure, and there is a gap between the lower lifting conveying mechanism (5) and the upper limiting conveying mechanism (6) for conveying knitted fabric.

4. The low-tension washing equipment for knitted fabrics as described in claim 3, characterized in that: The lower lifting and conveying mechanism (5) includes a conveying shaft (51), a conveying roller (52), a deflector wheel (53), a drive component (54), a conveying belt (55), and flow holes (56). There are two conveying shafts (51), each with a conveying roller (52) in the middle and deflector wheels (53) symmetrically installed at both ends. A conveying belt (55) is mounted on the conveying roller (52) between the two conveying shafts (51), and a number of flow holes (56) are evenly distributed through the conveying belt (55). The two conveying shafts (51) are rotatably mounted on the washing machine housing (1), and one end of one of the conveying shafts (51) rotates through the washing machine housing (1) and is fixed to the output end of the drive component (54) fixedly installed outside it.

5. The low-tension washing equipment for knitted fabrics as described in claim 4, characterized in that: The actuating wheel (53) is arranged on both sides of the conveyor roller (52) and the conveyor belt (55), and the actuating wheel (53) is provided with actuating plates arranged in a circular array.

6. The low-tension washing equipment for knitted fabrics as described in claim 5, characterized in that: A limiting shaft (12) is provided on the inner side of the conveyor belt (55). The limiting shaft (12) is rotatably installed in the washing machine housing (1). The limiting shaft (12) is arranged horizontally above the inner side of the conveyor belt (55) of the lower lifting conveyor mechanism (5), and the limiting shaft (12) is arranged horizontally below the inner side of the conveyor belt (55) of the upper limiting conveyor mechanism (6). The inner surface of the conveyor belt (55) is in rolling contact with the limiting shaft (12).

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