Circulating penetration type dyeing device for fabric preparation
By combining the spiral guide rod and the pressure roller, the problem of uneven dye penetration in a static state is solved, achieving uniform and efficient fabric dyeing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-10
AI Technical Summary
In existing fabric dyeing equipment, the dye is in a static state, resulting in low penetration efficiency and poor dyeing uniformity. Furthermore, traditional stirring blades are prone to creating dead zones, making it difficult to meet the process requirements of fiber fabrics for moisture absorption, breathability, and dyeing depth.
The system employs a spiral guide rod linked with a closed-loop circulation system, combined with dynamic pressure from the pressure roller. The spiral guide plate of the guide rod enables unidirectional circulation of the dye, while the pressure roller's squeezing action ensures uniform dye distribution and penetration.
It achieves uniform dye distribution, reduces waste, supports continuous and efficient production processes, and improves dyeing efficiency and quality.
Smart Images

Figure CN224106102U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of fabric dyeing processing, concretely relates to a circulating permeation type dyeing device for fabric preparation. BACKGROUND
[0002] The existing fabric dyeing equipment is in a static state during the dip dyeing process, and lacks effective temperature regulation means, resulting in low dye penetration efficiency and poor dyeing uniformity. The fabric conveying is mainly realized by the cooperation of the transmission roller and the abutting roller, but the static dye environment is easy to cause uneven penetration, and the dye temperature cannot be dynamically regulated, which is difficult to adapt to the process requirements of fiber fabric on moisture absorption, air permeability and dyeing depth, thereby restricting the processing efficiency and product quality.
[0003] Chinese patent authorized publication number CN221797883U discloses a kind of fiber fabric rapid permeation dyeing equipment, partition is arranged in dye tank, driving motor is installed below partition, motor output end is connected fixed rod through sealing bearing, fixed rod drives symmetrical stirring vane rotation, forcibly stirs dye to avoid deposition, while heating pipe in the cavity in partition interior carries out uniform heating to dye, dynamically regulates temperature to enhance dye activity.Gas cylinder is installed on the upper fixed frame of dye tank, gas cylinder drives positioning frame and rotating press roller vertically lift, the depth of fabric immersion in dye is controlled by adjusting the pressure degree of press roller, to ensure that fiber is in full contact with flowing dye.Stirring vane surface is provided with flow guide hole, to further optimize dye flow path.Drain pipe and heat dissipation groove cooperate to realize dye circulation discharge and equipment heat dissipation, battery provides stable power support.The whole system is linked through stirring, heating and pressure impregnation, solves the problems of dye static and temperature control deficiency of traditional equipment, significantly improves dyeing uniformity and penetration efficiency.But in the device, stirring vane only realizes local mixing of dye, easy to form dead angle, leading to uneven circulation.
[0004] Therefore, the utility model provides a kind of circulating permeation type dyeing device for fabric preparation to solve the above problems. UTILITY MODEL CONTENTS
[0005] In view of the above problems, a circulating permeation type dyeing device for fabric preparation is provided, which is driven by a gear in the center of the dye tank in the rack, and is linked with a closed-loop circulation system through a spiral flow guide rod body. The pressure of the pressure roller is dynamically adjusted to solve the problems of dye deposition and uneven penetration caused by traditional stirring dead angle. When the flow guide rod body rotates, the spiral flow guide plate drives the one-way circulation of the dye, eliminating stagnation. The pressure of the pressure roller is adjusted by the motor and the telescopic rod to make the fabric penetrate the circulating dye in multiple directions during extrusion, strengthening the fiber dyeing. The device realizes uniform distribution of dye, reduces loss and realizes continuous and efficient production through forced circulation and dynamic extrusion.
[0006] The utility model provides a circulating infiltration type dyeing device for fabric preparation, including frame, the central place of frame is installed with dye tank, is rotatably connected with the flow guide rod body in the dye tank, is equipped with the spiral flow guide board on the lateral wall of flow guide rod body, one end of flow guide rod body is equipped with first gear, first gear is meshed with second gear, second gear is connected with the first motor of drive its rotation, first motor is installed on the frame, both ends of dye tank are equipped with feed pipe and discharge pipe respectively, and the cavity of both ends of flow guide rod body is communicated with feed pipe and discharge pipe respectively, both ends of frame are equipped with the roll of discharging material and the roll of collecting material respectively, and the center place of frame is installed with the pressure material platform, and the pressure material platform is located above the dye tank, the second motor is installed on the pressure material platform, and the output shaft of second motor is connected with the telescopic link, and the one end of telescopic link is connected with the pressure roller through the pressure material platform.
[0007] Preferably, a plurality of guide holes are formed on the pressure material platform, and a plurality of guide rods are connected to the pressure roller and inserted into the guide holes.
[0008] Preferably, a receiving cavity is formed axially at the center of the flow guide rod body, a heating pipe for heating the dye is inserted into the receiving cavity, support frames are arranged at both ends of the frame, mounting insertion holes are formed in the support frames, and the heating pipe is inserted into the mounting insertion holes.
[0009] Preferably, a plurality of positioning insertion blocks are formed on the frame, a plurality of positioning insertion slots are formed on the bottom of the dye tank and adapted to the positioning insertion blocks, and when the dye tank is installed on the frame, the positioning insertion blocks are inserted into the positioning insertion slots.
[0010] Preferably, a first support frame is arranged at the center of the frame, a first mounting insertion slot is formed in the first support frame, a first mounting insertion block is arranged at the bottom of the pressure material platform and adapted to the first mounting insertion slot, and the first mounting insertion block is inserted into the first mounting insertion slot.
[0011] Preferably, a through hole is formed in the side of the first mounting insertion slot, a threaded hole is formed in the first mounting insertion block, and when the first mounting insertion block is inserted into the first mounting insertion slot, the through hole and the threaded hole are coincident in position.
[0012] Preferably, second support frames are arranged at both ends of the frame, the second mounting insertion blocks are rotatably connected to both ends of the roll of discharging material and the roll of collecting material, and second mounting insertion slots are formed in the top of the second support frames, and when the roll of discharging material and the roll of collecting material are installed at both ends of the frame, the second mounting insertion blocks are inserted into the second mounting insertion slots.
[0013] Preferably, through holes are formed in the sides of the second mounting insertion slots and the second mounting insertion blocks, and when the second mounting insertion blocks are inserted into the second mounting insertion slots, the through holes on the sides are in a coincident state.
[0014] The utility model discloses compared with prior art has beneficial effects is:
[0015] 1, the utility model discloses a closed loop circulation path that the helical flow guide plate of flow guide pole body surface and inlet pipeline, outlet pipeline constitute, make the dye form the continuous unidirectional flow when the rotation of flow guide pole body, completely eliminate the mixing dead angle, solved the problem of local circulation unevenness caused by traditional mixing blade, significantly improve the uniformity of dye distribution and fiber penetration effect.
[0016] 2, the utility model discloses the sliding fit structure of pressure roller and guide rod, the positioning slot plug-in design of dye tank and rack and the modular plug-in locking mechanism of discharging roller / receiving roller, realize high-precision alignment of assembly through multiple orientation and rigid fixation, guarantee the stable contact of fabric and dye in the dyeing process again, simplify the disassembly and maintenance process, improve equipment reliability and operation efficiency greatly.
[0017] 3, the utility model discloses the indirect heat conduction design of static heating pipe and rotating metal wall in flow guide pole body, combines the dynamic agitation of helical flow guide plate, realizes dye temperature uniform control, avoids the risk of local overheating or pollution caused by direct heating, reduces heat energy loss simultaneously, adapts the dyeing process demand of multiple fabrics, improves dyeing quality and process sustainability. DRAWINGS
[0018] Figure 1 It is a three-dimensional schematic view of a circulating penetration type dyeing device for fabric preparation of the utility model.
[0019] Figure 2 It is a front view of a circulating penetration type dyeing device for fabric preparation of the utility model.
[0020] Figure 3 It is a component exploded schematic view of a circulating penetration type dyeing device for fabric preparation of the utility model.
[0021] Figure 4 It is the disassembly schematic view of the dye tank of a circulating penetration type dyeing device for fabric preparation of the utility model.
[0022] Figure 5 It is a three-dimensional schematic view of the bottom view of the dye tank of a circulating penetration type dyeing device for fabric preparation of the utility model.
[0023] Figure 6 It is the local sectional view of the dye tank of a circulating penetration type dyeing device for fabric preparation of the utility model.
[0024] The figure marks are: 1, rack; 2, dye tank; 3, flow guide rod body; 4, flow guide plate; 5, first gear; 6, second gear; 7, first motor; 8, feeding pipeline; 9, discharging pipeline; 10, discharging roller; 11, receiving roller; 12, pressing platform; 13, second motor; 14, pressing roller; 15, guide hole; 16, guide rod; 17, containing cavity; 18, heating pipe; 19, support frame; 20, positioning insert block; 21, positioning slot; 22, first support; 23, first mounting slot; 24, first mounting insert block; 25, second support; 26, second mounting insert block; 27, second mounting slot. DETAILED DESCRIPTION
[0025] In order to further understand the features, technical means and specific purposes and functions achieved by the utility model, the utility model will be described in further detail below in combination with the drawings and specific embodiments.
[0026] Referring to Figures 1-6 The figure marks are: 1, rack; 2, dye tank; 3, flow guide rod body; 4, flow guide plate; 5, first gear; 6, second gear; 7, first motor; 8, feeding pipeline; 9, discharging pipeline; 10, discharging roller; 11, receiving roller; 12, pressing platform; 13, second motor; 14, pressing roller; 15, guide hole; 16, guide rod; 17, containing cavity; 18, heating pipe; 19, support frame; 20, positioning insert block; 21, positioning slot; 22, first support; 23, first mounting slot; 24, first mounting insert block; 25, second support; 26, second mounting insert block; 27, second mounting slot.
[0027] In the prior art, the existing stirring blade only realizes local mixing, and is prone to form dead angles, leading to uneven circulation. To solve this problem, in the present application, the rack 1 serves as a whole support frame, and the dye tank 2 in the center position is provided with a rotatable flow guide rod body 3, and the spiral flow guide plate 4 on the surface of the flow guide rod body 3 forms a driving force for directional flow when in operation. The first motor 7 is engaged with the first gear 5 at the end of the flow guide rod body 3 through the second gear 6, drives the flow guide rod body 3 to rotate continuously, and makes the spiral flow guide plate 4 stir the dye and form an axial advancing effect. The feeding pipeline 8 and the discharging pipeline 9 are respectively communicated with the two ends of the flow guide rod body 3, forming a closed loop circulation path, ensuring that the dye forms a continuous unidirectional flow in the system, avoiding dye deposition and maintaining uniform concentration.
[0028] The fabric is unwound from the feed roller 10 at one end of the frame 1 and enters the dyeing area along the pressing platform 12. The pressing platform 12 located above the dye tank 2 is equipped with a second motor 13, which drives the pressing roller 14 to vertically ascend and descend through the telescopic rod. The pressing roller 14 can adjust the pressing force according to the thickness of the fabric, stably press the fabric into the flowing dye, and dynamically adjust the immersion depth. The circulating dye pushed by the spiral guide plate 4 forms multi-directional penetration when it contacts the fabric, which, together with the extrusion effect of the pressing roller 14, promotes the dye to penetrate into the fiber gap. The dyed fabric is collected by winding the take-up roller 11 after being guided out of the pressing platform 12. The device cooperates with forced circulation and pressure immersion to reduce dye loss while improving dyeing efficiency and uniformity, realizing continuous production.
[0029] Referring to Figures 1-3 As shown: a plurality of guide holes 15 are opened on the pressing platform 12, and a plurality of guide rods 16 are connected to the pressing roller 14, and the guide rods 16 are inserted into the guide holes 15.
[0030] The guide holes 15 opened on the pressing platform 12 and the guide rods 16 connected to the pressing roller 14 form a sliding fit structure, which provides directional guidance during the lifting of the pressing roller 14. After the guide rod 16 is inserted into the guide hole 15, they form a vertical moving pair, and the contact between the hole wall of the guide hole 15 and the rod body of the guide rod 16 restricts the horizontal freedom of the pressing roller 14, ensuring that the pressing roller 14 only moves vertically along the set track when the telescopic rod is driven by the second motor 13.
[0031] Referring to Figures 1-6 As shown: the central part of the guide rod body 3 is axially provided with a receiving cavity 17, a heating pipe 18 for heating the dye is inserted into the receiving cavity 17, support frames 19 are arranged at both ends of the frame 1, mounting insertion holes are opened on the support frames 19, and the heating pipe 18 is inserted into the mounting insertion holes.
[0032] The heating pipe 18 inside the receiving cavity 17 of the guide rod body 3 transmits heat to the metal wall of the guide rod body 3 through heat conduction, and then exchanges heat with the external dye through the outer surface of the guide rod body 3. When the guide rod body 3 rotates, the spiral guide plate 4 pushes the external dye to circulate, and at the same time, the wall of the guide rod body 3 is continuously heated by the internal heating pipe 18. The high-temperature metal surface directly contacts the flowing dye, and the heat is quickly transmitted to the dye through the contact surface.
[0033] The heating tube 18 is embedded in the accommodating cavity 17 in the center of the flow guide rod body 3, and forms an indirect heating mode with the external dye. During rotation, the high thermal conductivity of the metal material of the flow guide rod body 3 uniformly spreads heat to the entire outer wall of the flow guide rod body 3, and the spiral flow guide plate 4 further disperses heat to the inside of the fluid when stirring the dye. The support frame 19 fixes the two ends of the heating tube 18 through the mounting hole, ensures that the heating tube 18 remains relatively stationary with the rotating flow guide rod body 3, and avoids wire winding or structural interference.
[0034] Referring to Figures 1-5 As shown: A plurality of positioning blocks 20 are arranged on the rack 1, and a plurality of positioning slots 21 adapted to the positioning blocks 20 are arranged on the bottom of the dye tank 2. When the dye tank 2 is installed on the rack 1, the positioning blocks 20 are inserted into the positioning slots 21.
[0035] The positioning blocks 20 on the rack 1 and the positioning slots 21 on the bottom of the dye tank 2 form a mechanical positioning system. During installation, the dye tank 2 is quickly positioned and fixed through the cooperation of the positioning blocks 20 and the positioning slots 21. After the positioning blocks 20 are inserted into the corresponding positioning slots 21, the horizontal displacement freedom of the dye tank 2 is limited by the friction between the contact surfaces and the geometric constraints, ensuring that the dye tank 2 is aligned with the central axis of the rack 1.
[0036] When the dye tank 2 is installed on the rack 1, the operator only needs to align the positioning slots 21 with the positioning blocks 20 and then lower them to complete the preliminary positioning. The gap between the side wall of the positioning block 20 and the inner wall of the positioning slot 21 allows for slight adjustment, and finally the fixing is achieved through gravity and structural self-locking.
[0037] Referring to Figures 1-4 As shown: The first support 22 is arranged at the center of the rack 1, the first mounting slot 23 is arranged on the surface of the first support 22, the first mounting block 24 adapted to the first mounting slot 23 is arranged on the bottom of the pressing platform 12, and the first mounting block 24 is inserted into the first mounting slot 23.
[0038] The first support 22 arranged at the center of the rack 1 forms a plug-in connection structure with the first mounting block 24 on the bottom of the pressing platform 12 through the first mounting slot 23 on its surface, achieving quick positioning of the pressing platform 12 on the rack 1. After the first mounting block 24 is inserted into the first mounting slot 23, the close cooperation between the block and the slot wall limits the horizontal movement freedom of the pressing platform 12, and at the same time, the vertical direction bears the dead weight of the platform and the dynamic load during the dyeing process, ensuring the accurate and stable relative position of the pressing platform 12 to the space above the dye tank 2.
[0039] Referring to Figures 1-4As shown: the first installation slot 23 side is provided with a through hole, the first installation plug 24 is provided with a threaded hole, when the first installation plug 24 is inserted into the first installation slot 23, the through hole and the threaded hole are coincident.
[0040] After the initial insertion of the plug and the slot is completed, the coincidence of the through hole and the threaded hole allows the operator to insert the bolt or screw from the side of the slot, and the pre-tightening force of the threaded connection is used to tightly press the plug and the slot, eliminating the insertion gap. This double fixing mechanism enhances the interface shear resistance on the basis of the original insertion structure, preventing the axial slip of the pressure platform 12 under dynamic pressure.
[0041] Referring to Figures 1-4 As shown: the second support 25 is provided at both ends of the rack 1, the second installation plug 26 is rotatably connected to both ends of the feeding roller 10 and the collecting roller 11, and the second installation slot 27 is provided at the top of the second support 25. When the feeding roller 10 and the collecting roller 11 are installed at both ends of the rack 1, the second installation plug 26 is inserted into the second installation slot 27.
[0042] The second support 25 at both ends of the rack 1 is connected to the second installation plug 26 at both ends of the feeding roller 10 and the collecting roller 11 through the second installation slot 27 at the top, realizing the quick installation and positioning of the roller body.
[0043] Referring to Figures 1-4 As shown: the second installation slot 27 and the second installation plug 26 are provided with through holes at the side, and when the second installation plug 26 is inserted into the second installation slot 27, the through holes at the side of the two are coincident.
[0044] The through holes at the side of the second installation slot 27 and the second installation plug 26 form a coaxial channel after insertion, realizing the axial locking of the feeding roller 10 and the collecting roller 11 by inserting the pin shaft or bolt.
[0045] Working principle: The dyeing device realizes efficient and uniform penetration of fabric dyeing through integrated mechanical structure and fluid circulation system. The rack 1 serves as the core support frame, and the dye tank 2 installed at the center of the rack 1 is rotationally connected with a flow guide rod body 3 inside. The sidewall of the flow guide rod body 3 is provided with a spiral flow guide plate 4. One end of the flow guide rod body 3 is engaged with the first gear 5 and the second gear 6, and the second gear 6 is driven to rotate by the first motor 7, thereby continuously rotating the flow guide rod body 3. The cavities at both ends of the flow guide rod body 3 are communicated with the inlet pipe 8 and the outlet pipe 9, respectively, forming a closed circulation channel. The spiral flow guide plate 4 pushes the dye to flow in one direction along the axial direction in the rotating process, avoiding dye deposition and maintaining uniform concentration. The heating pipe 18 is inserted into the accommodating cavity 17 at the center of the flow guide rod body 3 along the axial direction, and the heating pipe 18 is fixed through the mounting insertion hole on the support frame 19, and remains relatively stationary with the rotating flow guide rod body 3. The heat is indirectly transferred to the externally circulating dye through the metal wall of the flow guide rod body 3, ensuring uniform temperature distribution.
[0046] The positioning slot 21 at the bottom of the dye tank 2 is matched and installed with the positioning plug 20 on the rack 1, and the quick positioning and fixation of the dye tank 2 are realized through the plug-in structure, ensuring that the dye tank 2 is aligned with the center axis of the rack 1. The first support 22 is provided at the center of the rack 1, and the first installation slot 23 of the first support 22 is plugged with the first installation plug 24 at the bottom of the pressing platform 12. The pressing platform 12 is vertically fixed above the dye tank 2 through the plug-in structure. The second motor 13 installed on the pressing platform 12 drives the telescopic rod to drive the pressing roller 14 to rise and fall. The guide rod 16 connected with the pressing roller 14 is inserted into the guide hole 15 of the pressing platform 12, limiting the horizontal deviation and ensuring the movement of the pressing roller 14 along the vertical track. The pressing roller 14 dynamically adjusts the pressing force according to the thickness of the fabric, stably presses the fabric into the flowing dye, and the dye pushed by the spiral flow guide plate 4 penetrates into the gap between the fabric fibers under the extrusion action.
[0047] The second installation slot 27 is provided at the top of the second support 25 at both ends of the rack 1, and the second installation plug 26 at both ends of the discharging roller 10 and the collecting roller 11 is inserted into the slot. The shaft is locked axially by inserting a pin shaft or a bolt through the through hole on the side, while allowing the roller body to rotate freely. After the fabric is unwound from the discharging roller 10, it is immersed in the dye tank 2 through the pressing platform 12, and after dyeing, it is continuously wound by the collecting roller 11. The through hole on the side of the first installation slot 23 is fastened with the threaded hole on the first installation plug 24 of the pressing platform 12 through a bolt, enhancing the shear resistance of the plug-in structure and preventing the pressing platform 12 from deviating under dynamic load. The components work cooperatively through the modular plug-in and locking mechanism, combined with the functions of forced dye circulation, temperature control and pressure immersion, to realize efficient, uniform and continuous dyeing process, while reducing maintenance complexity and resource consumption.
[0048] The above embodiment only expresses one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A circulating permeation type dyeing apparatus for fabric preparation comprising a frame (1), a dye tank (2) is installed at the center of the frame (1), characterized in that, A dye tank (2) is rotatably connected with a flow guide rod body (3), a spiral flow guide plate (4) is arranged on the side wall of the flow guide rod body (3), one end of the flow guide rod body (3) is provided with a first gear (5), the first gear (5) is meshingly connected with a second gear (6), the second gear (6) is connected with a first motor (7) for driving the rotation of the second gear (6), the first motor (7) is installed on a rack (1), both ends of the dye tank (2) are respectively provided with an inlet pipe (8) and an outlet pipe (9), the inlet pipe (8) and the outlet pipe (9) are respectively communicated with the cavities at both ends of the flow guide rod body (3), both ends of the rack (1) are respectively provided with a discharging roller (10) and a collecting roller (11), a pressing platform (12) is installed at the center of the rack (1), the pressing platform (12) is located above the dye tank (2), a second motor (13) is installed on the pressing platform (12), an output shaft of the second motor (13) is connected with a telescopic rod, one end of the telescopic rod passes through the pressing platform (12) and is connected with a pressing roller (14).
2. The circulating penetration type dyeing apparatus for fabric preparation according to claim 1, wherein A plurality of guide holes (15) are formed in the pressing platform (12), a plurality of guide rods (16) are connected to the pressing roller (14), and the guide rods (16) are inserted into the guide holes (15).
3. The circulating penetration dyeing apparatus for fabric preparation according to claim 1, wherein An accommodating cavity (17) is axially formed at the center of the flow guide rod body (3), a heating pipe (18) for heating the dye is inserted into the accommodating cavity (17), support frames (19) are arranged at both ends of the rack (1), mounting insertion holes are formed in the support frames (19), and the heating pipe (18) is inserted into the mounting insertion holes.
4. The circulating penetration dyeing apparatus for fabric preparation according to claim 1, wherein A plurality of positioning insertion blocks (20) are formed in the rack (1), a plurality of positioning insertion grooves (21) are formed in the bottom of the dye tank (2) and are matched with the positioning insertion blocks (20), and when the dye tank (2) is installed on the rack (1), the positioning insertion blocks (20) are inserted into the positioning insertion grooves (21).
5. The circulating penetration dyeing apparatus for fabric preparation according to claim 1, wherein A first support frame (22) is arranged at the center of the rack (1), a first mounting insertion groove (23) is formed in the first support frame (22), a first mounting insertion block (24) is arranged at the bottom of the pressing platform (12) and is matched with the first mounting insertion groove (23), and the first mounting insertion block (24) is inserted into the first mounting insertion groove (23).
6. The circulating penetration type dyeing apparatus for fabric preparation according to claim 5, wherein A through hole is formed in the side of the first mounting insertion groove (23), a threaded hole is formed in the first mounting insertion block (24), and when the first mounting insertion block (24) is inserted into the first mounting insertion groove (23), the through hole and the threaded hole are positionally coincided.
7. The circulating penetration dyeing apparatus for fabric preparation according to claim 1, wherein Second support frames (25) are arranged at both ends of the rack (1), second mounting insertion blocks (26) are rotatably connected to both ends of the discharging roller (10) and the collecting roller (11), second mounting insertion grooves (27) are formed in the top of the second support frames (25), and when the discharging roller (10) and the collecting roller (11) are installed at both ends of the rack (1), the second mounting insertion blocks (26) are inserted into the second mounting insertion grooves (27).
8. The circulating penetration dyeing apparatus for fabric preparation according to claim 7, wherein The second mounting slot (27) and the second mounting block (26) are provided with through holes on the side edges, and the through holes on the side edges of the second mounting slot (27) and the second mounting block (26) are in the coincident state when the second mounting block (26) is inserted into the second mounting slot (27).
Citation Information
Patent Citations
Rapid penetration dyeing equipment for fiber fabric
CN221797883U