A micro tension pre-shrinking washing machine

Abstract

The application discloses a micro-tension pre-shrinking and washing machine, which comprises a pre-shrinking unit and a washing unit, wherein the pre-shrinking unit and the washing unit are sequentially arranged along a fabric conveying path in a fabric conveying direction; the pre-shrinking unit comprises a high-temperature pre-shrinking box and a fabric conveying mechanism, the fabric conveying mechanism is arranged in the high-temperature pre-shrinking box, the fabric conveying mechanism comprises a plurality of rollers, the plurality of rollers are arranged in parallel along the fabric conveying path, the surface of the roller protrudes radially outwardly and is provided with a plurality of racks, the racks are parallel to the axial direction of the roller, and the plurality of racks are arranged and distributed along the circumferential direction of the roller. The micro-tension pre-shrinking and washing machine is characterized in that the fabric is pre-shrunk at high temperature in the pre-shrinking unit and then relaxed under the washing of the washing unit, the operation of one plus one minus presents a neutralizing effect, the final deformation of the fabric can be greatly reduced, the fabric after washing can keep the initial shape or the nearly initial shape, and the quality of the fabric after washing is higher.

Description

Technical Field

[0001] This invention relates to the field of textile pretreatment equipment, and more particularly to a micro-tension pre-shrinking washing machine. Background Technology

[0002] As a key unit machine in fabric scouring, dyeing, and printing processes, the washing machine generally consists of a water tank containing guide rollers. During operation, the fabric is wound around the guide rollers and conveyed under their traction. During this conveying process, the fabric enters the washing water for direct washing or padding washing. During the washing process, the traction of the guide rollers and the padding force of the padding wash can easily cause the fabric to loosen and deform, affecting its shape. For woven fabrics, due to their strong resistance to deformation, the traction of the guide rollers and the padding force of the padding wash have little impact on the fabric's shape; therefore, existing washing machines of this type can still be used for washing woven fabrics. However, for knitted fabrics, which are inherently loose and have weak resistance to deformation, the traction of the guide rollers and the padding force of the padding wash have a significant impact on the fabric's shape; therefore, existing washing machines of this type are not suitable for washing knitted fabrics. The current washing machine has a limited range of applications. Although it can wash woven fabrics, the traction of the guide rollers and the pressing force of the rolling wash have little impact on the fabric shape, but this impact is not negligible. Therefore, the design of the washing machine needs further improvement to broaden its application range and enhance the quality of washed fabrics. Summary of the Invention

[0003] The purpose of this invention is to provide a micro-tension pre-shrinking washing machine.

[0004] The technical solution to achieve the purpose of this invention is: a micro-tension pre-shrinking washing machine, comprising a pre-shrinking unit and a washing unit, wherein the pre-shrinking unit and the washing unit are arranged sequentially along the fabric conveying direction on the fabric conveying path;

[0005] The pre-shrinking unit includes a high-temperature pre-shrinking chamber and a fabric conveying mechanism. The fabric conveying mechanism is located inside the high-temperature pre-shrinking chamber and includes several rollers. The rollers are parallel to each other and arranged along the fabric conveying path. Several racks protrude radially outward from the surface of each roller. The racks are parallel to the axial direction of the roller. The racks on each roller are arranged circumferentially.

[0006] Furthermore, the cross-section of the rack is any one of a triangle, trapezoid, or semi-ellipse. The cross-section of the rack of the present invention may be, but is not limited to, any one of a triangle, trapezoid, or semi-ellipse.

[0007] Furthermore, the cross-section of the roller surface is wavy. A roller with a wavy cross-section is not only easy to manufacture, but also has high strength.

[0008] Furthermore, a support member is provided between each pair of adjacent rollers, and the support member is located on the fabric conveying path. During operation, the fabric is conveyed on the rollers and the support member, supported by both. The support member, located between adjacent rollers and on the fabric conveying path, serves two purposes: firstly, it fills the gap between adjacent rollers, preventing the fabric conveyed on the rollers from embedding into the gap and causing fabric jamming; secondly, the support member supports the fabric, reducing the contact between the rollers and the fabric, and also reducing the stress on the rollers, further protecting the fabric from burns caused by large-area contact with the rollers or excessive force.

[0009] Furthermore, the cross-section of the support member is an inverted triangle or a near-inverted triangle, and the support member is close to the two adjacent rollers. When the cross-section of the support member is an inverted triangle or a near-inverted triangle, the support member can fit more closely to the two adjacent rollers. By this arrangement, the support member can be made closer to the two adjacent rollers. When the support member is close to the two adjacent rollers, the gap between the support member and the adjacent rollers is small, which can effectively prevent the fabric from getting embedded in the gap.

[0010] Furthermore, the high-temperature pre-shrinking chamber is also equipped with spray heads, which are positioned facing the fabric conveying path. During operation, the spray heads spray degreasing agent onto the fabric to remove oil and facilitate cleaner washing.

[0011] Furthermore, the washing unit includes a medium-temperature washing unit and a normal-temperature washing unit. The pre-shrinking unit, the medium-temperature washing unit, and the normal-temperature washing unit are arranged sequentially along the fabric conveying path. The water temperature of the medium-temperature washing unit is higher than that of the normal-temperature washing unit. During operation, after the fabric is pre-shrunken by the pre-shrinking unit, it enters the medium-temperature washing unit and the normal-temperature washing unit successively. The medium-temperature washing unit performs the first wash, and the normal-temperature washing unit performs the second wash. The washing unit of this invention may include only a single medium-temperature washing unit or a normal-temperature washing unit, or it may include both medium-temperature washing units and normal-temperature washing units simultaneously, allowing the fabric to undergo two washes. Compared to the former, the latter involves two washes: a medium-temperature wash unit and a normal-temperature wash unit. Firstly, the increased number of washes results in better overall cleanliness. Secondly, the higher water temperature in the medium-temperature wash unit causes the fabric to open up during the first wash, releasing internal contaminant molecules. After these molecules are released, the normal-temperature wash unit further cleans the fabric while simultaneously causing it to shrink again, reducing fabric loosening. This results in a better clean and more resilient fabric, minimizing deformation.

[0012] Furthermore, the pre-shrinking unit, the medium-temperature washing unit, and the normal-temperature washing unit are stacked sequentially from bottom to top. This arrangement, on the one hand, reduces the floor space required and facilitates space arrangement; on the other hand, the heat from the pre-shrinking unit and the medium-temperature washing unit can be conducted upwards for reuse, reducing heat energy damage, improving heat energy utilization, and thus reducing energy consumption.

[0013] Furthermore, both the medium-temperature washing unit and the normal-temperature washing unit include a water tank, several lower rollers, and several upper rollers. The lower rollers are arranged horizontally at intervals, with their bottoms located within the water tank. The upper rollers are located above the lower rollers and are staggered with them. Each upper roller is tangent to the two lower rollers adjacent to it below. The fabric is sequentially wrapped around and passed between the lower and upper rollers. When the medium-temperature washing unit and the normal-temperature washing unit wash the fabric, the lower rollers rotate, driving the upper rollers tangent to them. During the rotation of the lower and upper rollers, the wrapped fabric is conveyed. During the fabric conveying process, because the bottom of the lower roller is located within the water tank, the fabric frequently enters and exits the water tank for washing. This invention relates to a micro-tension pre-shrinking washing machine, in which the lower roller and the upper roller are staggered vertically. On one hand, the lower roller can drive the tangential upper roller, eliminating the need for the upper roller to provide independent rotational power. This results in low energy consumption for the overall operation of the medium-temperature washing unit and the normal-temperature washing unit. Simultaneously, along the fabric conveying path, the fabric is wrapped around the lower and upper rollers for transport. Supported and guided by the lower and upper rollers, the fabric tension is low, making it easy to control and preventing edge curling. The fabric deformation after washing is also minimal. On the other hand, the tangential lower and upper rollers transport the fabric... During washing, the fabric passes between the lower roller and the upper roller, and is squeezed and rubbed by the tangential lower roller and upper roller, resulting in better washing efficiency. Furthermore, the lower roller and upper roller are arranged densely, and the medium-temperature washing unit and the normal-temperature washing unit occupy less space. With the same volume of washing unit, more medium-temperature washing units and normal-temperature washing units can be set, and the amount of fabric in the washing unit is larger. Under the same volume, the fabric capacity of the washing unit of the present invention is three times that of the traditional rotary drum washing machine, resulting in higher washing efficiency.

[0014] Furthermore, the micro-tension pre-shrinking washing machine also includes a fabric feeding frame, a centering device, a water seal trough, a fabric feeding device, a water-pinching roller, and a fabric dropping device. The fabric feeding frame, the centering device, the water seal trough, the fabric feeding device, the pre-shrinking unit, the washing unit, the water-pinching roller, and the fabric dropping device are arranged sequentially along the fabric conveying direction on the fabric conveying path. During operation, the fabric feeder conveys the fabric into the centering device; the fabric entering the centering device is positioned by the device to achieve centering; the centered fabric then enters the water seal tank, where it is soaked and contains a certain amount of moisture; the soaked fabric enters the feeding device and is conveyed to the pre-shrinking unit; the pre-shrinking unit heats the fabric, causing it to shrink pre-shrunk at high temperature; the pre-shrinked fabric enters the washing unit for washing; the washed fabric enters the squeezing rollers for dewatering; the dewatered fabric enters the unloading device for collection. This invention forms a complete washing equipment.

[0015] This invention relates to a micro-tension pre-shrinking washing machine. By incorporating a pre-shrinking unit at the front end of the washing unit, the fabric undergoes high-temperature pre-shrinking before entering the washing unit for final washing. This high-temperature pre-shrinking makes the fabric more compact than its original shape before washing. Even after washing, this more compact fabric, though loosening, returns to its original shape or is only slightly deformed compared to its original shape. Compared to washing without the high-temperature pre-shrinking unit, this significantly reduces fabric deformation and minimizes the impact of washing on the fabric's shape. In other words, this invention's micro-tension pre-shrinking washing machine achieves a "neutralizing" effect by first pre-shrinking the fabric at high temperature in the pre-shrinking unit and then loosening it during washing. This final deformation significantly reduces the fabric's final shape, allowing it to maintain its initial or near-initial shape after washing, resulting in higher fabric quality.

[0016] This invention relates to a micro-tension pre-shrinking washing machine. Within the pre-shrinking unit, the fabric conveying mechanism comprises several rollers. This fabric conveying mechanism is a roller bed structure. When the fabric is conveyed by the roller bed structure, it falls onto and piles on the rollers, and is transported by the rotating rollers. During the pre-shrinking process of the fabric conveyed by the rollers, the tension of the fabric piled on the rollers is low, or even zero, and it is in a completely naturally relaxed state. When the fabric is pre-shrinked at high temperature in this naturally relaxed state, the resistance to fabric shrinkage is low, the fabric shrinkage effect is better, the "neutralization" effect with subsequent washing is more significant, and the fabric shape is closer to its initial natural state.

[0017] Furthermore, in the micro-tension pre-shrinking washing machine of the present invention, in the fabric conveying mechanism of the pre-shrinking unit, a plurality of toothed racks protrude radially outward from the surface of the roller. The presence of these toothed racks significantly increases the surface roughness of the roller. When the roller conveys the fabric, the friction between the roller and the fabric is high, and the rotating toothed racks can even directly push the fabric forward. This reduces the likelihood of slippage during fabric conveying, resulting in smoother fabric transport and preventing uneven accumulation of slipping fabric on the roller. In other words, the micro-tension pre-shrinking washing machine of the present invention allows for more uniform fabric conveying on the roller. This uniformly conveyed fabric, when pre-shrinked at high temperature in the high-temperature pre-shrinking chamber, receives more even heating, leading to better uniformity of pre-shrinking in all parts of the fabric.

[0018] In the micro-tension pre-shrinking washing machine of the present invention, when the roller with the toothed surface conveys the fabric, the fabric falls onto the toothed surface. The contact area between the fabric and the toothed surface is small, so the high temperature of the roller in the high-temperature pre-shrinking chamber is less likely to cause contact burns to the fabric. Moreover, the fabric that falls onto the toothed surface is lifted by the toothed surface, and the lifted fabric has good air permeability, resulting in higher efficiency of high-temperature pre-shrinking of the fabric in the high-temperature pre-shrinking chamber.

[0019] In the micro-tension pre-shrinking washing machine of the present invention, the radially outward protruding toothed rack on the surface of the roller also serves as a reinforcing rib, which can make the roller stronger. When the stronger roller conveys the fabric, the operation is more stable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the micro-tension pre-shrinking washing machine of the present invention;

[0021] Figure 2 This is a schematic diagram of the pre-shrinking unit of the micro-tension pre-shrinking washing machine of the present invention;

[0022] Figure 3 This is a partial structural schematic diagram of the fabric conveying mechanism of the pre-shrinking unit in the micro-tension pre-shrinking washing machine of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the rollers of the fabric conveying mechanism in the pre-shrinking unit of the micro-tension pre-shrinking washing machine of the present invention;

[0024] Figure 5 This is a schematic diagram of the washing unit of the micro-tension pre-shrinking washing machine of the present invention. Implementation

[0025] The specific embodiments of the micro-tension pre-shrinking washing machine of the present invention will be described in detail below with reference to the accompanying drawings:

[0026] like Figures 1 to 4As shown, a micro-tension pre-shrinking washing machine includes a pre-shrinking unit 1 and a washing unit 2, wherein the pre-shrinking unit 1 and the washing unit 2 are arranged sequentially along the fabric conveying direction on the fabric conveying path.

[0027] The pre-shrinking unit 1 includes a high-temperature pre-shrinking chamber 11 and a fabric conveying mechanism 12. The fabric conveying mechanism 12 is located inside the high-temperature pre-shrinking chamber 11. The fabric conveying mechanism 12 includes a plurality of rollers 121, which are parallel to each other and arranged along the fabric conveying path. A plurality of racks 1211 protrude radially outward from the surface of each roller 121. The racks 1211 are parallel to the axial direction of the roller 121. The plurality of racks 1211 on each roller are arranged circumferentially along the roller 121.

[0028] The present invention relates to a micro-tension pre-shrinking washing machine, wherein the pre-shrinking unit 1 is used to heat the fabric, thereby causing the fabric structure to shrink in advance before washing, i.e., pre-shrinking; and the washing unit 2 is used to wash the fabric.

[0029] The present invention relates to a micro-tension pre-shrinking washing machine. In the pre-shrinking unit 1, the high-temperature pre-shrinking chamber 11 provides a high-temperature environment for the pre-shrinking of the fabric. The high-temperature pre-shrinking chamber 11 can be a steam pre-shrinking chamber or an electric heating pre-shrinking chamber. The fabric conveying mechanism 12 serves as a conveying device for conveying the fabric entering the high-temperature pre-shrinking chamber 11.

[0030] In the micro-tension pre-shrinking washing machine of the present invention, when the fabric enters the high-temperature pre-shrinking box 11 of the pre-shrinking unit 1, it is conveyed by the fabric conveying mechanism 12. During the conveying process, the fabric shrinks under the high temperature in the high-temperature pre-shrinking box 11. After shrinking, the fabric exits the pre-shrinking unit 1 and enters the washing unit 2 for washing.

[0031] In this invention, a micro-tension pre-shrinking washing machine is described. In the pre-shrinking unit 1, the fabric conveying mechanism 12 is composed of several parallel rollers 121, with several racks 1211 protruding radially outward from the surface of each roller 121. Specifically, when the fabric conveying mechanism 12 conveys the fabric, after the fabric 10 is conveyed onto the roller 121, it falls onto and contacts the racks 1211. The rotating roller 121 then drives the racks 1211, propelling and conveying the fabric 10 forward.

[0032] This invention relates to a micro-tension pre-shrinking washing machine. By setting a pre-shrinking unit 1 at the front end of the washing unit 2, the fabric 10 undergoes high-temperature pre-shrinking before entering the washing unit 2 for washing. The high-temperature pre-shrinking of the pre-shrinking unit 1 makes the fabric before washing in the washing unit 2 more compact than its original shape. Even if the more compact fabric loosens after washing in the washing unit 2, it returns to its original shape, or is slightly deformed compared to its original shape. Compared to washing without the high-temperature pre-shrinking of the pre-shrinking unit 1, the degree of fabric deformation is greatly reduced, and the influence of washing on the fabric shape is significantly minimized. In other words, in this invention's micro-tension pre-shrinking washing machine, the fabric is first pre-shrinked at high temperature in the pre-shrinking unit 1, and then loosened under washing in the washing unit 2. This addition and subtraction operation presents a "neutralizing" effect, greatly reducing the final deformation of the fabric. The washed fabric can maintain its initial shape or near-initial shape, resulting in higher quality fabric after washing.

[0033] This invention relates to a micro-tension pre-shrinking washing machine. Within the pre-shrinking unit 1, the fabric conveying mechanism 12 comprises several rollers 121. The fabric conveying mechanism 12 is a roller bed structure. When the fabric is conveyed by the roller bed structure fabric conveying mechanism 12, the fabric falls onto and piles on the rollers 121, and is conveyed by the rotating rollers 121. During the pre-shrinking process of the fabric conveyed by the rollers 121, the tension of the fabric piled on the rollers 121 is small, or even non-existent, and it is in a completely natural relaxed state. When the fabric is pre-shrinked at high temperature in a naturally relaxed state, the resistance to fabric shrinkage is small, the fabric shrinkage effect is better, the "neutralization" effect with subsequent washing is more significant, and the fabric shape is closer to its initial natural state.

[0034] Furthermore, in the micro-tension pre-shrinking washing machine of the present invention, in the fabric conveying mechanism 12 of the pre-shrinking unit 1, a plurality of toothed racks 1211 protrude radially outward from the surface of the roller 121. The presence of these toothed racks significantly increases the surface roughness of the roller 121. When the roller 121 conveys the fabric, the friction between the roller 121 and the fabric is high, and the rotating toothed racks 1211 can even directly push the fabric forward. This reduces slippage during fabric conveying, making the fabric conveying smoother and preventing uneven accumulation of slipping fabric on the roller 121. In other words, in the micro-tension pre-shrinking washing machine of the present invention, the fabric 10 can be conveyed more evenly on the roller 121. The evenly conveyed fabric is then pre-shrinked at high temperature in the high-temperature pre-shrinking chamber 11, resulting in more uniform heating and better pre-shrinking uniformity in all parts of the fabric.

[0035] In the micro-tension pre-shrinking washing machine of the present invention, when the roller 121 with the toothed rack 1211 on its surface conveys the fabric, the fabric falls onto the toothed rack 1211. The contact area between the fabric on the toothed rack 1211 and the toothed rack 1211 is small, so the high temperature of the roller 121 in the high temperature pre-shrinking chamber 11 is less likely to cause contact burns to the fabric. Moreover, the fabric falling onto the toothed rack 1211 is lifted by the toothed rack 1211, and the lifted fabric has good air permeability, so the high temperature pre-shrinking efficiency of the fabric in the high temperature pre-shrinking chamber 11 is higher.

[0036] In the micro-tension pre-shrinking washing machine of the present invention, the toothed rack 1211 protruding radially outward on the surface of the roller 121 also acts as a reinforcing rib, which can make the roller 121 stronger. When the stronger roller 121 conveys the fabric, the operation is more stable.

[0037] In the micro-tension pre-shrinking washing machine of the present invention, preferably, the rack 1211 extends through both ends of the roller 121. The rack 1211 extends along the axial direction of the roller 121 and covers the entire roller 121. With this configuration, when the roller 121 conveys the fabric 10, any position of the fabric 10 in the width direction can fall on the rack 1211, contact the rack 1211, and be propelled forward by the rack 1211.

[0038] In the micro-tension pre-shrinking washing machine of the present invention, the cross-section of the rack 1211 may be, but is not limited to, any one of a triangle, trapezoid, or semi-ellipse.

[0039] In the micro-tension pre-shrinking washing machine of the present invention, preferably, the cross-section of the roller 121 is wavy. The wavy cross-section of the roller 121 not only simplifies processing but also increases strength.

[0040] In this invention, a micro-tension pre-shrinking washing machine preferably includes a support member 122 between each pair of adjacent rollers 121, the support member 122 being located on the fabric conveying path. During operation, the fabric is conveyed on the rollers 121 and the support member 122, supported by both. The support member 122, located between adjacent rollers 121 and on the fabric conveying path, serves two purposes: firstly, it fills the gap between adjacent rollers 121, preventing the fabric conveyed on the rollers 121 from becoming embedded in the gap and causing fabric jamming; secondly, the support member 122 supports the fabric, reducing contact between the rollers 121 and the fabric, and also reducing the stress on the rollers 121, further protecting the fabric from burns due to large-area contact or excessive force from the rollers 121.

[0041] In the micro-tension pre-shrinking washing machine of the present invention, preferably, the cross-section of the support member 122 is an inverted triangle or a near-inverted triangle, and the support member 122 is close to the two adjacent rollers 121. When the cross-section of the support member 122 is an inverted triangle or a near-inverted triangle, the support member 122 can fit more closely to the two adjacent rollers 121. By this arrangement, the support member 122 can be made closer to the two adjacent rollers 121. When the support member 122 is close to the two adjacent rollers 121, the gap between the support member 122 and the adjacent rollers 121 is small, which can effectively prevent the fabric from getting embedded in the gap.

[0042] In the present invention, a micro-tension pre-shrinking washing machine is preferably provided with a spray head 13 inside the high-temperature pre-shrinking chamber 11, the spray head 13 being arranged facing the fabric conveying path. During operation, an oil-removing agent is sprayed onto the fabric through the spray head 13 to remove oil and facilitate a cleaner wash.

[0043] In the present invention, a micro-tension pre-shrinking washing machine is preferably provided in which each roller 121 is a synchronously rotating active roller. The active rotation of each roller 121 provides more power and better consistency when conveying the fabric.

[0044] The present invention relates to a micro-tension pre-shrinking washing machine, wherein the rollers 121 can be arranged in a straight line or in a non-straight line.

[0045] In this invention, a micro-tension pre-shrinking washing machine is preferably provided, wherein the washing unit 2 includes a medium-temperature washing unit 21 and a normal-temperature washing unit 22. The pre-shrinking unit 1, the medium-temperature washing unit 21, and the normal-temperature washing unit 22 are arranged sequentially along the fabric conveying direction on the fabric conveying path. The water temperature of the medium-temperature washing unit 21 is higher than that of the normal-temperature washing unit 22. During operation, after the fabric 10 is pre-shrinked by heating in the pre-shrinking unit 1, it enters the medium-temperature washing unit 21 and the normal-temperature washing unit 22 successively. The medium-temperature washing unit 21 performs the first wash, and the normal-temperature washing unit 22 performs the second wash.

[0046] This invention relates to a micro-tension pre-shrinking washing machine. The washing unit 2 can consist of a single medium-temperature washing unit 21 or a normal-temperature washing unit 22, or it can include both medium-temperature washing unit 21 and normal-temperature washing unit 22, allowing the fabric to undergo two washes sequentially. Compared to the former, the latter, with two washes by the medium-temperature washing unit 21 and the normal-temperature washing unit 22, has several advantages. Firstly, the increased number of washes results in better overall cleanliness. Secondly, the higher water temperature in the medium-temperature washing unit 21 compared to the normal-temperature washing unit 22 causes the fabric structure to open during the first wash in the medium-temperature washing unit 21, releasing internal contaminant molecules. After these contaminant molecules are released, the fabric is further cleaned by the normal-temperature washing unit 22. Simultaneously, the fabric structure shrinks again within the normal-temperature washing unit 22, reducing fabric loosening. This results in a better cleanliness effect while maintaining a better fabric structure and reducing fabric deformation.

[0047] In the micro-tension pre-shrinking washing machine of the present invention, preferably, the pre-shrinking unit 1, the medium-temperature washing unit 21, and the normal-temperature washing unit 22 are stacked sequentially from bottom to top. This arrangement, on the one hand, reduces the floor space required and facilitates space arrangement; on the other hand, the heat from the pre-shrinking unit 1 and the medium-temperature washing unit 21 can be conducted upwards for reuse, reducing heat energy damage, improving heat energy utilization efficiency, and thus reducing energy consumption.

[0048] The micro-tension pre-shrinking washing machine of the present invention, preferably, is as follows: Figure 5 As shown, both the medium-temperature washing unit 21 and the normal-temperature washing unit 22 include a water tank 201, several lower rollers 202 and several upper rollers 203. The lower rollers 202 are arranged horizontally at intervals, with their bottoms located inside the water tank 201. The upper rollers 203 are located above the lower rollers 202 and are staggered with them. Each upper roller 203 is tangent to the two lower rollers 202 below it. The fabric 10 sequentially wraps around and passes between the lower rollers 202 and the upper rollers 203.

[0049] In the micro-tension pre-shrinking washing machine of the present invention, when the medium-temperature washing unit 21 and the normal-temperature washing unit 22 wash the fabric, the lower roller 202 rotates, driving the upper roller 203 tangential to it. During the rotation of the lower roller 202 and the upper roller 203, the covered fabric 10 is driven and conveyed. During the conveying of the fabric 10, because the bottom of the lower roller 202 is located in the water tank 201, the fabric 10 frequently enters and exits the water tank 201 for washing.

[0050] This invention relates to a micro-tension pre-shrinking washing machine, in which the lower roller 202 and the upper roller 203 are staggered vertically. On one hand, the lower roller 202 can drive the tangential upper roller 203, eliminating the need for the upper roller 203 to provide independent rotational power. This results in low energy consumption for the overall operation of the medium-temperature washing unit 21 and the normal-temperature washing unit 22. Simultaneously, along the fabric conveying path, the fabric is conveyed wrapped around the lower roller 202 and the upper roller 203. Under the support and guidance of the lower roller 202 and the upper roller 203, the fabric tension is low, making it easy to control and preventing edge curling. The fabric deformation after washing is also minimal. On the other hand, when the tangential lower roller 202 and the upper roller 203 convey the fabric, the fabric passes between the lower roller 202 and the upper roller 203, and is subjected to the tangential lower roller 202... The squeezing and friction of the upper roller 203 improves the washing efficiency of the fabric; and the dense arrangement of the upper roller 202 and the upper roller 203, which are staggered, results in a smaller footprint for the medium-temperature washing unit 21 and the normal-temperature washing unit 22. With the same volume of washing unit 2, more medium-temperature washing units 21 and normal-temperature washing units 22 can be set, and the capacity of the washing unit 2 is larger. Under the same volume, the capacity of the washing unit 2 of the present invention is three times that of the traditional rotary drum washing machine, resulting in higher washing efficiency.

[0051] The present invention provides a micro-tension pre-shrinking washing machine, preferably further comprising a fabric feed frame 3, a centering device 4, a water seal trough 5, a fabric feeding device 6, a water-pinching roller 7, and a fabric dropping device 8. The fabric feed frame 3, the centering device 4, the water seal trough 5, the fabric feeding device 6, the pre-shrinking unit 1, the washing unit 2, the water-pinching roller 7, and the fabric dropping device 8 are arranged sequentially along the fabric conveying direction on the fabric conveying path.

[0052] This invention relates to a micro-tension pre-shrinking washing machine. During operation, the fabric feeder 3 conveys the fabric into the centering device 4. The fabric entering the centering device 4 is positioned and centered by the device. The centered fabric then enters the water seal tank 5, where it is soaked and contains a certain amount of moisture. The soaked fabric then enters the fabric feeding device 6, which conveys it to the pre-shrinking unit 1. The pre-shrinking unit 1 heats the fabric, causing it to pre-shrink at high temperature. The pre-shrinked fabric then enters the washing unit 2 for washing. After washing, the fabric enters the water-pressing roller 7, where it is pressed to remove water. Finally, the dewatered fabric enters the fabric unloading device 8, where it is collected. This invention forms a complete washing equipment system.

[0053] For those skilled in the art, without departing from the concept of this invention, several simple deductions or substitutions can be made, and all such deductions or substitutions should be considered to fall within the scope of protection of this invention.

Claims

1. A low tension pre-shrinking washing machine characterized by: The system includes a pre-shrinking unit and a washing unit, which are sequentially arranged along the fabric conveying path in the fabric conveying direction. The pre-shrinking unit includes a high-temperature pre-shrinking chamber and a fabric conveying mechanism. The fabric conveying mechanism is located inside the high-temperature pre-shrinking chamber and is a roller bed structure. The fabric conveying mechanism includes several rollers that are parallel to each other and arranged along the fabric conveying path. Several racks protrude radially outward from the surface of each roller. The racks are parallel to the axial direction of the roller, and the racks on each roller are arranged circumferentially. When the fabric conveying mechanism conveys the fabric, the fabric falls onto and piles on the rollers.

2. The micro-tension pre-shrinking washing machine according to claim 1, characterized in that: The cross-section of the rack is any one of a triangle, trapezoid, or semi-ellipse.

3. The micro-tension pre-shrinking washing machine according to claim 1, characterized in that: The cross-section of the surface of the roller is wavy.

4. The low tension pre-shrinking and washing machine according to claim 1, characterized in that: A support is provided between each pair of adjacent rollers, and the support is located on the fabric conveying path.

5. The low tension pre-shrinking and washing machine according to claim 4, characterized in that: The cross-section of the support member is an inverted triangle or a near-inverted triangle, and the support member is close to the two adjacent rollers.

6. The low tension pre-shrinking and washing machine according to claim 1, characterized in that: The high-temperature pre-shrinking chamber is also equipped with a spray head, which is positioned towards the fabric conveying path.

7. The low tension pre-shrinking and washing machine according to claim 1, characterized in that: The washing unit includes a medium-temperature washing unit and a normal-temperature washing unit. The pre-shrinking unit, the medium-temperature washing unit, and the normal-temperature washing unit are arranged sequentially along the fabric conveying direction on the fabric conveying path.

8. The low tension pre-shrinking and washing machine according to claim 7, characterized in that: The pre-shrinking unit, the medium-temperature washing unit, and the normal-temperature washing unit are stacked sequentially from bottom to top.

9. The micro tension pre-shrinking washing machine according to claim 7, characterized in that: Both the medium-temperature washing unit and the normal-temperature washing unit include a water tank, several lower rollers and several upper rollers. The lower rollers are arranged horizontally at intervals, with their bottoms located inside the water tank. The upper rollers are located above the lower rollers and are staggered with them. Each upper roller is tangent to the two lower rollers adjacent to it below. The fabric sequentially wraps around and passes between the lower rollers and the upper rollers.

10. The low tension pre-shrinking and washing machine according to claim 1, characterized in that: The micro-tension pre-shrinking washing machine also includes a fabric feeding frame, a centering device, a water seal trough, a fabric feeding device, a water-pinching roller, and a fabric dropping device. The fabric feeding frame, the centering device, the water seal trough, the fabric feeding device, the pre-shrinking unit, the washing unit, the water-pinching roller, and the fabric dropping device are arranged sequentially along the fabric conveying direction on the fabric conveying path.

Images