CN108179578B - A printing and dyeing system and process for preparing highly elastic and environmentally friendly fabrics - Google Patents

Abstract

The invention belongs to the field of textile printing and dyeing, and relates to a printing and dyeing system and a process for preparing high-elasticity environment-friendly fabric, wherein the printing and dyeing system comprises a dyeing chamber, a cloth lifting roller, a cloth guide roller, a current-opening mechanism and a drainage mechanism, wherein the current-opening mechanism is arranged in the dyeing chamber and is positioned at one side of grey cloth, and comprises a liquid poking component, and fibers and flocks positioned on the surface of the grey cloth are carried away through the dye liquor after being impacted by the dye liquor; the drainage mechanism is arranged in the dyeing chamber and is sunk in the dye liquor, and comprises a dyeing channel through which grey cloth passes, and a first flow channel and a second flow channel which are positioned on the upper side and the lower side of the dyeing channel and flow through dyes, wherein the first flow channel and the second flow channel are communicated with the tail end of the dyeing channel; the liquid-poking assembly is used for performing compression pre-dyeing while removing impurities on the surface of the grey cloth to form circulating dye liquor flow, and the circulating dye liquor flow is subjected to penetration deep dyeing through the dye liquor opposite to the transmission direction of the grey cloth, so that the rapid and uniform dyeing of the grey cloth is realized, and the technical problems of poor production efficiency and poor dyeing uniformity in the prior art are solved.

Description

A printing and dyeing system and process for preparing highly elastic and environmentally friendly fabrics

technical field

The invention relates to the field of textile printing and dyeing production, in particular to a printing and dyeing system and a process for preparing highly elastic and environmentally friendly fabrics.

Background technique

In the textile textile, dyeing and finishing industry, the overflow dyeing machine used for dyeing gray cloth is equipped with a cloth lifting roller to drive the cloth to rotate. The dyeing liquid exists in the dyeing room. The dyeing process of the cloth mainly lies in the dyeing in the lower dyeing room. By controlling the running speed of the cloth, the soaking time of the cloth in the dyeing room is controlled, and the dyeing effect is also controlled. This kind of dyeing machine is divided into groups of four. The dyeing rooms of each group are connected. The disadvantage of overflow dyeing machine dyeing is that the dyeing result may be that the dyeing effect of each piece of cloth is different, and the effect of different dyeing degrees is likely to occur; in addition, when the surface of the gray cloth enters the dyeing room for dyeing, impurities such as fibers and dander are inevitably adhered to the surface, and the cloth containing impurities is prone to dye spots and dyeing defects after dyeing.

Chinese Patent Application No. 201210149245.1 discloses a horizontal high-temperature and high-pressure overflow dyeing machine. The present invention includes a dye tank, a cloth lifting wheel, a nozzle and a dye liquor circulation delivery system. The dye tank is provided with upper and lower conveyors, and the height of the lower conveyor is higher than the height of the dye solution in the dye tank during operation.

The above technical solution separates the gray cloth from the dyeing solution through the upper conveyor and the lower conveyor, thereby reducing dyeing defects such as staining spots, dyeing flowers, and stains; however, when the dyeing solution dyes the gray cloth, the uniformity of the dyeing solution is reduced, and the conveyor is used to transport the gray cloth, which reduces the uniformity of the dyeing solution. In addition, it is the same as the traditional dip dyeing method, which is to soak the gray cloth for a long time to achieve dyeing of the gray cloth, and its production efficiency and dyeing uniformity are poor.

Contents of the invention

The object of the present invention is to address the deficiencies of the prior art, and provide a printing and dyeing system and process for preparing high-elastic and environmentally friendly fabrics. While removing impurities from the gray cloth surface through the liquid-draining component, the compressed pre-dyeing is performed to form a circulating dye liquor flow, which is penetrated and deep-dyeed through the dye liquor opposite to the gray cloth transmission direction, to achieve rapid and uniform dyeing of the gray cloth, and to solve the technical problems of poor production efficiency and dyeing uniformity in the prior art.

In order to solve the above technical problems, the present invention provides a printing and dyeing system for preparing highly elastic and environmentally friendly fabrics, including a dyeing room, a cloth lifting roller and a plurality of cloth guide rollers arranged inside the dyeing room, and also includes:

A flow-exclusion mechanism, the said flow-exclusion mechanism is arranged inside the dyeing chamber and is located on one side of the gray cloth, which includes a liquid-draining component that drives the dye liquor to impact and remove impurities on the surface of the gray cloth, and the fibers and dander on the surface of the gray cloth are taken away by the dye liquor after being impacted by the dye liquor; and

Drainage mechanism, the drainage mechanism is arranged in the dyeing chamber and submerged in the dyeing liquor, which includes a dyeing channel through which the gray cloth passes, a first flow channel and a second flow channel on the upper and lower sides of the dyeing channel through which the dye flows, and the first flow channel and the second flow channel communicate with the end of the dyeing channel.

As an improvement, it also includes a separation mechanism arranged on the dyeing chamber and above the flow-separating mechanism, the separation mechanism includes a chute fixedly arranged on the wall of the dyeing chamber, a driving part installed in the chute in a reciprocating manner, and a transmission channel arranged in the driving part through which the gray cloth passes, and the driving part is arranged in transmission connection with the liquid dialing assembly.

Wherein, the driving part includes a limiting part symmetrically arranged on both sides of the transmission channel and in contact with the gray cloth, a transmission pin fixedly connected to the limiting part and located on one side thereof, and a swing arm swingably arranged on the dyeing chamber to drive the limiting part to reciprocate, and the swing arm is connected to the driving pin through a waist groove.

As an improvement, the liquid repelling assembly is submerged in the dyeing liquor, which includes rotating rollers with a symmetrical structure and an impurity removal area between them that passes through the gray cloth. The rotating direction of the rotating roller is opposite to the conveying direction of the gray cloth.

Wherein, the rotating roller is arranged in transmission connection with the cloth lifting roller, which includes a dial that is oscillating in one direction on its outer peripheral surface to intermittently dial the dye liquor, and a driving pin that is eccentrically arranged at one end of the rotating roller and hingedly arranged with the swing arm.

As an improvement, the drainage mechanism also includes a baffle arranged at the rear end of the first flow channel and above the dyeing channel 51, the baffle extends above the surface of the dye solution, and forms a first return port between it and the dyeing channel; the ends of the first flow channel and the second flow channel are connected through the second return port.

As an improvement, the drainage mechanism also includes screens detachably arranged on the first return port and the second return port to remove slag and isolate the dye liquor flowing into the dyeing channel, and collection nets respectively arranged on both sides of the flow escape mechanism and at the upper ends of the first flow channel and the second flow channel to collect impurities after falling off.

The present invention also provides a printing and dyeing process for preparing highly elastic and environmentally friendly fabrics, comprising the following steps:

(a) In the feeding part, the gray cloth is transported into the dyeing chamber by the cloth lifting roller for directional transmission and dyeing;

(b) In the initial dyeing and impurity removal part, the gray cloth enters the dyeing solution along the vertical direction, and the dyeing solution is driven by the rotating roller to remove impurities on the surface of the gray cloth in a reverse impact manner, and at the same time realize pre-dyeing;

(c) Backflow deep dyeing part, the gray cloth pre-dyed in the step (b) is transmitted along the dyeing channel in an S structure to infiltrate, and at the same time, the deep dyeing is carried out in a penetrating manner through the dye liquor flow opposite to the gray cloth transmission movement direction;

(d) output part, after step (b) and step (c) are dyed repeatedly, the finished cloth formed is output through the cloth outlet.

Wherein, the step (b) also includes a slag discharge part, wherein the rotating roller washes the dye solution in the deep layer to the surface of the gray cloth in a rotating manner to remove impurities, and then, combined with the reciprocating swinging motion of the gray cloth, pushes the dye solution containing impurities away from the gray cloth respectively, so as to realize the removal of impurities.

As an improvement, the step (c) also includes an impurity collecting part, and the rotating roller drives the dye liquor to flow while rotating to form a circulating dye liquor flow, and after the impurities are gathered by the dye liquor flow, the impurities on the surface of the dye liquor are collected.

Beneficial effects of the present invention:

(1) The present invention removes impurities on the surface of the gray cloth through the liquid-repelling component and at the same time drives the dye liquor containing impurities on the upper surface away from the gray cloth to avoid secondary pollution to the subsequent gray cloth. At the same time, two circulations of the dye liquor flow are formed inside the dye liquor, combined with the directional transmission mode of the gray cloth, and then the gray cloth is impacted for primary dyeing, and the dye liquor is used for secondary penetration and deep dyeing. Compared with the multi-cycle level dyeing in the traditional infection process, the dyeing efficiency of the present invention is increased by 20%, and in the present invention, the dye liquor is always in the upper and lower cycles Flow, to avoid the difference in the color of the cloth caused by the slow flow of dyeing liquor in the prior art, and solve the technical problems of poor production efficiency and dyeing uniformity in the prior art;

(2) In the present invention, through the rotating rollers arranged symmetrically on both sides of the gray cloth, the gray cloth is reversely impacted to remove impurities in a relative rotation manner, and at the same time, the dye solution containing impurities on the upper surface of the dyeing channel is transferred to both sides. Since the dyeing channel, the first flow channel and the second flow channel are all independent channels, the clean dye solution below the first flow channel and the second flow channel enters the dyeing channel, thereby forming a dye solution flow located on the upper and lower sides of the gray cloth and opposite to its transfer direction. Through the relative movement of the gray cloth and dyeing, and the S structure of the gray cloth in the dyeing channel Improve the penetrating effect of the dyeing liquor on the gray cloth, thereby improving the dyeing quality and reducing the number of cycles of the gray cloth during the dyeing process. In addition, because in the present invention, the dyeing liquor has a downward reflux circulation flow structure, it avoids the problem of uneven dyeing of the gray cloth caused by the small dyeing turbulence in the penetrating dyeing chamber;

(2) In the present invention, the gray cloth is driven to swing by the limit part set in transmission connection with the liquid-draining assembly. Due to the fixed position setting of the cloth-lifting roller and the liquid-draining assembly, the tension force of the gray cloth changes due to the change of the angle of the gray cloth at the same time as it swings, so that the gray cloth automatically absorbs the dye liquor in a loose and tight manner. Combined with the dyeing channel, the dye liquor penetrates the gray cloth to print and dye, thereby further improving the dyeing efficiency and dyeing quality of the present invention;

To sum up, the present invention has the advantages of simple structure, high dyeing quality, uniform color of cloth and high production efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work.

Fig. 1 is a schematic diagram of a front view sectional structure of the present invention;

Fig. 2 is the enlarged schematic diagram of place A in Fig. 1;

Fig. 3 is a schematic structural diagram of the first state of the liquid dialing assembly;

Fig. 4 is a schematic structural diagram of the second state of the liquid dialing assembly;

Fig. 5 is the enlarged schematic diagram of place B in Fig. 1;

Fig. 6 is a schematic structural diagram of the first state of the present invention;

Fig. 7 is a schematic diagram of the structure of the second state of the present invention;

Fig. 8 is a process flow diagram of Embodiment 3 of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

Embodiment one

As shown in Figures 1, 2, 3 and 4, a printing and dyeing system for preparing highly elastic and environmentally friendly fabrics includes a dyeing room 1, a cloth lifting roller 2 and a plurality of cloth guide rollers 3 arranged inside the dyeing room 1, and also includes:

The flow opening mechanism 4 is arranged inside the dyeing chamber 1 and is located on one side of the gray cloth 10. It includes a liquid-draining assembly 41 that drives the dye liquor to impact and remove impurities on the surface of the gray cloth 10. After the fibers and flocks on the surface of the gray cloth 10 are impacted by the dye liquor, they are carried away by the dye liquor; 0 surface is impacted to separate impurities such as fibers and shavings attached to the surface from the gray cloth 10, and at the same time, the gray cloth 10 is shrunk in a two-way impact manner, and in the subsequent deep dyeing process, the gray cloth 10 is elastically recovered. The dye liquor is automatically sucked, thereby improving the immersion effect of the dye liquor; and

Drainage mechanism 5, said drainage mechanism 5 is arranged in said dyeing chamber 1 and is sunk in the dyeing liquor, which includes a dyeing channel 51 passing through the gray cloth 10, a first flow channel 52 and a second flow channel 53 located on the upper and lower sides of the dyeing channel 51 through which the dye flows, and the first flow channel 52 and the second flow channel 53 are arranged in communication with the end of the dyeing channel 51; During the dyeing process, the movement direction of the dye liquor is opposite to that of the gray cloth 10, so that the dye liquor can pass through the gray cloth 10 more easily. Compared with the traditional dye liquor penetrating into the interior of the gray cloth 10 through the surface of the gray cloth 10, the dyeing efficiency of the present invention is higher.

It should be noted that, as shown in Figures 1, 2, 3 and 4, the present invention removes impurities on the surface of the gray cloth 10 through the liquid-draining assembly 41, and at the same time drives the dye liquor containing impurities on the upper surface away from the gray cloth to avoid secondary pollution to the subsequent gray cloth 10. At the same time, two cycles of dye liquor flow are formed inside the dye liquor, combined with the directional transmission mode of the gray cloth 10, and then the gray cloth 10 is impacted for primary dyeing, and the second penetration and deep dyeing of the gray cloth 10 is carried out in a countercurrent manner. Dyeing, the dyeing efficiency of the present invention is increased by 20%, and in the present invention, the dye liquor is always in the up and down circulation flow, avoiding the technical problem of the difference in the color of the cloth caused by the slow flow of the dye liquor in the prior art.

Embodiment two

As shown in Figures 1, 5, 6 and 7, the parts identical or corresponding to those in the second embodiment adopt the reference numerals corresponding to the second embodiment. For the sake of simplicity, only the differences between the second embodiment and the second embodiment are described below; the third embodiment is different from the second embodiment in that it also includes a separation mechanism 6 that is arranged on the dyeing chamber 1 and above the flow escape mechanism 4. The transmission channel 63 passing through the gray cloth 10 in the driving part 62 is set in transmission connection with the liquid dialing assembly 41; in this embodiment, the liquid dialing assembly 41 drives the driving part 62 to reciprocate during the rotation process, and synchronously drives the gray cloth 10 passing through the transmission channel 63 to swing. In one swing, the two gather so as to increase the flow rate of the dyeing liquid and realize the rapid detachment of impurities; in addition, during the swinging process of the gray cloth 10, due to the fixed positions of the cloth lifting roller 2 and the liquid-repelling assembly 41, the tension of the gray cloth 10 changes while swinging, so that the gray cloth 10 is dipped in a loose and tight manner.

Wherein, as shown in Figures 5, 6 and 7, the driving part 62 includes a limiting part 621 symmetrically arranged on both sides of the transmission channel 63 and in contact with the gray cloth 10, a transmission pin 622 fixedly connected to the limiting part 621 and located on one side thereof, and a swing arm 623 swingably arranged on the dyeing chamber 1 to drive the reciprocating movement of the limiting part 621. The swing arm 623 is connected to the transmission pin 622 through a waist groove; 10 wear, the limiting part 621 is set as a rotating round roller; the swing arm 623 is driven by the liquid dialing assembly 41 to swing and at the same time guides a small up and down movement through the waist groove, and the swing arm 623 pushes the transmission pin 622 to reciprocate, so that the driving part 62 drives the gray cloth 10 to swing.

Further, as shown in Figures 2, 3 and 4, the liquid-repelling assembly 41 is sunk in the dye liquor, and includes a rotating roller 411 with a symmetrical structure and an impurity removal area 412 between which passes through the gray cloth 10. The rotating direction of the rotating roller 411 is opposite to the conveying direction of the gray cloth 10;

Wherein, as shown in Figures 2, 3 and 4, the rotating roller 411 is set in transmission connection with the cloth lifting roller 2, and it includes a dial 4111 that is oscillating in one direction on its outer peripheral surface to intermittently dial the dye liquor and a drive pin 4112 that is eccentrically arranged on one end of the rotating roller 411 and hinged with the swing arm 623. In this embodiment, the rotating roller 411 drives the driving pin 4112 to perform circular motion during the rotation, and synchronously drives the swing arm 623 to swing to realize the reciprocating motion of the stopper 621;

Further, as shown in FIG. 1 , the drainage mechanism 5 also includes a baffle 54 arranged at the rear end of the first flow channel 52 and above the dyeing channel 51, the baffle 54 extends above the surface of the dye solution, and forms a first return port 541 between it and the dyeing channel 51; the ends of the first flow channel 52 and the second flow channel 53 communicate through the second return port 542.

Further, as shown in FIG. 1 , the drainage mechanism 5 also includes a screen 55 detachably arranged on the first return port 541 and the second return port 542 to remove slag and isolate the dye solution flowing into the dyeing channel 51 , and a collection net 56 respectively arranged on both sides of the flow-exclusion mechanism 4 and at the upper ends of the first flow channel 52 and the second flow channel 53 to collect impurities after falling off; Enter after filtering and sieving to ensure that the dye liquor in the dyeing channel 51 is clean. In addition, by setting a collecting net 56, the impurities removed by the liquid-draining assembly 41 are collected and cleaned regularly, so as to reduce the impact of impurities on the dye liquor and gray cloth dyeing effect.

Embodiment three

According to Fig. 8 in the accompanying drawings of the description, a printing and dyeing process for preparing high-elastic environment-friendly fabrics in Example 3 is described:

The present invention also provides a printing and dyeing process for preparing highly elastic and environmentally friendly fabrics, comprising the following steps:

(a) In the feeding part, the gray cloth 10 is transported into the dyeing chamber by the cloth lifting roller 2 for directional transmission and dyeing;

(b) the impurity removal part of the initial dyeing, the gray cloth 10 enters the dyeing liquor along the vertical direction, and the dyeing liquor is driven by the rotating roller 411 to remove impurities on the surface of the gray cloth 10 in a reverse impact manner, and at the same time realize pre-dyeing; while the dyeing liquor impacts and removes impurities on the gray cloth 10, it is squeezed in a two-way impacting manner to improve the removal efficiency of impurities on the surface;

(c) the backflow deep dyeing part, the gray cloth 10 pre-dyed in step (b) is in an S structure and is transmitted along the dyeing channel 51 for invading, and at the same time, the gray cloth 10 is subjected to deep dyeing in a penetrating manner through the dye liquor flow opposite to the transmission direction of the gray cloth 10; the gray cloth 10 recovers while moving in the dyeing channel 51 after being impacted and squeezed by the dye liquor in step (b), forming autonomous adsorption of the dye liquor; and

(d) output part, after step (b) and step (c) are dyed repeatedly, the finished cloth formed is output through the cloth outlet.

Wherein, the step (b) also includes a slag discharge part, the rotating roller 411 washes the dye solution in the deep layer to the surface of the gray cloth 10 in a rotating manner to remove impurities, and then combines the reciprocating swinging motion of the gray cloth 10 to push the dye solution containing impurities away from the gray cloth 10 to realize the removal of impurities.

As an improvement, the step (c) also includes an impurity collection part, the rotating roller 411 drives the dye liquor to flow in a rotating manner, while forming a circulating dye liquor flow, and after the impurities are gathered by the dye liquor flow, the impurities on the surface of the dye liquor are collected.

In the present invention, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any change or replacement that can be easily thought of by anyone skilled in the art under the technical prompt of the present invention, such as performing compression pre-dyeing to form a circulating dye liquor flow while removing impurities from the surface of the gray cloth through the liquid-repelling component, forming a circular dye liquor flow, and penetrating and deeply dyeing the gray cloth through the dye liquor opposite to the conveying direction of the gray cloth, so as to realize rapid and uniform dyeing of the gray cloth, should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (6)

1. A printing and dyeing equipment for preparing highly elastic and environmentally friendly fabrics, comprising a dyeing chamber (1), a cloth lifting roller (2) and a plurality of cloth guide rollers (3) arranged inside the dyeing chamber (1), characterized in that it also includes: A flow relief mechanism (4), the flow relief mechanism (4) is arranged inside the dyeing chamber (1) and is located on one side of the gray cloth (10), which includes a liquid-draining component (41) that drives the dye liquor to impact and remove impurities on the surface of the gray cloth (10), and the fibers and dander on the surface of the gray cloth (10) are taken away by the dye liquor after being impacted by the dye liquor; and Drainage mechanism (5), the drainage mechanism (5) is arranged in the dyeing chamber (1) and is sunk in the dyeing liquor, which includes a dyeing channel (51) passing through the gray cloth (10), a first flow channel (52) and a second flow channel (53) located on the upper and lower sides of the dyeing channel (51) through which the dye flows, and the first flow channel (52) and the second flow channel (53) are arranged in communication with the end of the dyeing channel (51); It also includes a separation mechanism (6) arranged on the dyeing chamber (1) and located above the flow-exclusion mechanism (4), the separation mechanism (6) includes a chute (61) fixedly arranged on the inner wall of the dyeing chamber (1), a driving part (62) installed in the chute (61) in a reciprocating manner, and a transmission channel (63) arranged in the driving part (62) passing through the gray cloth (10), the driving part (62) and the liquid dialing assembly (4 1) Transmission connection settings; The drainage mechanism (5) also includes a baffle (54) arranged at the rear end of the first flow channel (52) and above the dyeing channel (51), the baffle (54) extends above the surface of the dye solution, and forms a first return port (541) between it and the dyeing channel (51); the ends of the first flow channel (52) and the second flow channel (53) are connected through the second return port (542); The driving part (62) includes a limiting part (621) symmetrically arranged on both sides of the transmission channel (63) and in contact with the gray cloth (10), a transmission pin (622) fixedly connected to the limiting part (621) and located on one side thereof, and a swing arm (623) swingably arranged on the dyeing chamber (1) to drive the limiting part (621) to reciprocate. The swing arm (623) is connected to the driving pin (622) through a waist groove connection; The liquid-repelling component (41) is submerged in the dyeing liquor, and it includes a rotating roller (411) with a symmetrical structure and an impurity removal area (412) between which passes through the gray cloth (10). The rotating direction of the rotating roller (411) is opposite to the conveying direction of the gray cloth (10). 2. The printing and dyeing equipment for preparing highly elastic and environmentally friendly fabrics according to claim 1, characterized in that, the rotating roller (411) is set in transmission connection with the cloth lifting roller (2), and it includes a dial (4111) that swings in one direction on its outer circumferential surface to intermittently dial the dye liquor, and a drive pin (4112) that is eccentrically arranged at one end of the rotating roller (411) and is hinged to the swing arm (623), and the dial (4111) It is arranged in an arc-shaped plate structure, and its arc surface is adapted to the outer peripheral surface of the rotating roller (411). 3. The printing and dyeing equipment for preparing highly elastic and environmentally friendly fabrics according to claim 2, characterized in that, the drainage mechanism (5) also includes a screen (55) detachably arranged on the first return port (541) and the second return port (542) to remove slag and isolate the dye liquid flowing into the dyeing channel (51), and a collection net that is respectively arranged on both sides of the flow-exclusion mechanism (4) and is located at the upper ends of the first flow channel (52) and the second flow channel (53) to collect impurities after falling off (56). 4. the printing and dyeing process of a kind of printing and dyeing equipment for preparing high elastic environment-friendly fabrics based on claim 1, is characterized in that, comprises the following steps: (a) In the feeding part, the gray cloth (10) is transported into the dyeing chamber by the cloth lifting roller (2) for directional transmission and dyeing; (b) the impurity removal part of the initial dyeing, the gray cloth (10) enters the dyeing liquor along the vertical direction, and the dyeing liquor is driven by the rotating roller (411) to remove impurities on the surface of the gray cloth (10) in a reverse impact manner, and at the same time realize pre-dyeing; (c) the backflow deep dyeing part, the gray cloth (10) pre-dyed in step (b) is transported in an S structure along the dyeing channel (51) for dip-dyeing, and at the same time, the gray cloth (10) is transported in the opposite direction to the dye liquor flow to carry out deep dyeing in a penetrating manner; and (d) output part, after step (b) and step (c) are dyed repeatedly, the finished cloth formed is output through the cloth outlet. 5. The printing and dyeing process according to claim 4, characterized in that the step (b) also includes a slag removal part, the rotating roller (411) washes the dye solution in the deep layer to the surface of the gray cloth (10) in a rotating manner to remove impurities, and combines the reciprocating swing motion of the gray cloth (10) to push the dye solution containing impurities away from the gray cloth (10) respectively, so as to realize the removal of impurities. 6. The printing and dyeing process according to claim 5, characterized in that, the step (c) also includes an impurity collection part, and the rotating roller (411) drives the dye liquor to flow in a rotating manner while forming a circulating dye liquor flow, and after the impurities are aggregated through the dye liquor flow, the impurities on the surface of the dye liquor are collected.