A high-efficiency auxiliary quantitative application and mixing device for polyester low-water dyeing
By using a periodic rotating blade design with the pivot point as the fulcrum in the polyester low-water dyeing process, the problem of uneven mixing of polyester auxiliaries was solved, achieving a highly efficient mixing effect and ensuring the success rate and environmental friendliness of the dyeing process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU DONGHENG PRINTING & DYEING CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-07-14
AI Technical Summary
In existing low-water dyeing processes for polyester, uneven mixing of high-efficiency auxiliaries leads to long mixing times and low mixing efficiency, especially in areas near the tank wall and far from the impeller where poor mixing zones are easily formed.
The mixing bin and impeller assembly, including a shaft, blades and slide plate, are arranged horizontally. The periodic flipping blade design with the shaft center as the fulcrum generates a strong transverse reciprocating flow. Combined with the use of a metering pump, this enables uniform application and mixing of additives.
It significantly improves mixing uniformity, reduces mixing dead zones, shortens the dissolution time of auxiliaries, reduces color spots and staining problems caused by uneven distribution, and ensures a high success rate for dyeing in one attempt.
Smart Images
Figure CN224494609U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterless dyeing technology for polyester fabrics, specifically a device for quantitative application and mixing of highly efficient auxiliaries for low-water dyeing of polyester. Background Technology
[0002] Due to its dense molecular structure and strong hydrophobicity, polyester requires high-temperature, high-pressure water baths for traditional dyeing, resulting in extremely high water consumption and the need for multiple washes to remove excess dye. To address environmental concerns, low-water dyeing processes employ strategies such as medium substitution, process optimization, and auxiliary agent innovation to reduce water consumption while maintaining dyeing quality.
[0003] In low-water dyeing processes, high-efficiency auxiliaries are mostly concentrated liquids. Before dyeing, various concentrated liquids need to be mixed evenly according to the formula. Patent CN220657383U describes a horizontally arranged mixing chamber. With a drive-driven directional stirring element paired with the horizontally arranged mixing chamber, the liquid tends to circulate along a fixed path, easily forming poorly mixed areas, especially in areas far from the impeller or close to the tank wall. Overall mixing efficiency is low, and the time required to achieve uniform mixing is long. Utility Model Content
[0004] The purpose of this invention is to provide a highly efficient quantitative application and mixing device for polyester low-water dyeing, thereby overcoming the aforementioned shortcomings in the prior art. To achieve the above objective, this invention provides the following technical solution: A highly efficient quantitative application and mixing device for polyester low-water dyeing, comprising: a horizontally placed mixing chamber; a paddle assembly including a rotating shaft, blades, and a sliding plate, wherein the rotating shaft is fixedly connected to the output shaft of an energized motor, the rotating shaft is arranged along the horizontal axis of the mixing chamber, and symmetrically movable sliding plates are provided on both sides of the rotating shaft, the sliding plates and the rotating shaft are connected in a sealed sliding connection, one end of the blade is connected to the rotating shaft through a spherical bearing and the other end is connected to the sliding plate through a spherical bearing, and when the sliding plate moves, the blade deflects around the connection point with the rotating shaft as the rotation center.
[0005] Preferably, the shaft and the slide plate each have a number of threaded holes corresponding to the number of blades. The spherical bearing includes balls and a base. Two balls are fixed on the blade, each ball is embedded in the base, and the base is threadedly connected to the corresponding threaded hole. When the base is fully screwed into the threaded hole, there is a gap between the blade and the shaft.
[0006] Preferably, a limiting rib is fixed on the rotating shaft. The limiting rib includes two side ribs that form a figure-eight shape. The blade swings between the two side ribs and can abut against the side wall of either side rib. The small opening formed by the figure-eight side ribs faces the threaded hole on the rotating shaft, and the large opening faces the slide plate.
[0007] Preferably, the device further includes a drive mechanism symmetrically installed at both ends of the rotating shaft, including a battery pack, an electromagnet, a driven plate, and a slide groove. A cavity is opened inside the rotating shaft, and the battery pack and electromagnet, which are electrically connected together, are located in the cavity. A slide groove is opened on the side wall of the rotating shaft. The driven plate located in the cavity passes through the slide groove and is fixed to the slide plate. The driven plate is magnetic. The battery pack and an external controller are connected by an electrical signal. When the external controller controls the battery pack to supply power to the electromagnet, the electromagnet generates magnetism to drive the driven plate to approach the magnetic attraction surface of the electromagnet.
[0008] Preferably, a telescopic rod is also installed inside the cavity. The telescopic rod includes a bottom end and a movable end that are elastically slidably connected. The movable end is fixed to the driven plate, and the bottom end is used to fix it in the cavity of the rotating shaft.
[0009] Preferably, the device is also equipped with a metering pump, which is used to meterly add high-efficiency additives to the mixing silo.
[0010] The beneficial effects of this invention are as follows: By periodically rotating the blades with the center of the rotating shaft as the fulcrum, this design can efficiently generate a powerful, periodic reciprocating flow along the transverse direction of the mixing chamber. Compared with the unidirectional flow generated by fixed blades, this reciprocating flow can significantly reduce the mixing dead zone and greatly improve the mixing uniformity of the liquid throughout the entire length of the tank. At the same time, compared with the blade design that changes direction with the end of the rotating shaft as the fulcrum, the central fulcrum structure makes the force exerted on the fluid along the entire blade length more uniform and the lever arm longer, thereby generating stronger and more consistent axial thrust and tank wall shear force. This not only further optimizes the mixing uniformity of the entire tank but also greatly enhances the peeling effect on materials adhering to the tank wall. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0012] Figure 1 This is a structural diagram of the device.
[0013] Figure 2 This is a structural diagram of the stirring mechanism.
[0014] Figure 3 for Figure 2 Enlarged view of section A.
[0015] Figure 4 This is a structural diagram of the blade.
[0016] Figure 5 Structural diagram of the drive mechanism
[0017] Figure 6 This is a schematic diagram showing the layout of the sealing ridges.
[0018] Explanation of reference numerals in the attached figures:
[0019] 10. Stirring mechanism; 11. Paddle assembly; 111. Rotating shaft; 112. Blade; 113. Slide plate; 114. Base; 115. Limiting ridge; 12. Drive mechanism; 121. Battery pack; 122. Electromagnet; 123. Driven plate; 124. Slide groove; 125. Telescopic rod; 126. Sealing ridge; 127. Sealing groove; 20. Metering pump. Detailed Implementation
[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0021] Example
[0022] This product is suitable for horizontally placed mixing silos, and is especially suitable for stirring concentrated liquids.
[0023] like Figures 1-4 The stirring mechanism 10 includes a blade assembly 11 and a drive mechanism 12. The blade assembly 11 is used to rotate in the horizontally placed mixing chamber and use force transmission to stir the mixed liquid in the mixing chamber in a different direction. The drive mechanism 12 is used to adjust the direction of the thrust during stirring so that the liquids at both ends of the mixing chamber are mixed in opposite directions.
[0024] The blade assembly 11 includes a rotating shaft 111, blades 112, a sliding plate 113, a base 114, and a limiting rib 115. The rotating shaft 111 is fixedly connected to the output shaft of the motor. The motor is connected to the mains power and is fixed on one end face of the mixing hopper. The rotating shaft 111 is placed horizontally, and the rotation center line of the rotating shaft 111 coincides with the horizontal center line of the horizontal mixing hopper. The sliding plate 113 is slidably connected to the rotating shaft 111 along the axial direction. The sliding plate 113 has threaded holes for installation. The rotating shaft 111 also has threaded holes for installation. Two balls are fixed on the blades 112. The balls are embedded in the base 114. The base 114 can be threadedly connected to the threaded holes located on the sliding plate 113 or the rotating shaft 111.
[0025] It should be noted that the ball bearing is embedded in the base 114 and can rotate in space within the base 114. A similar structure can be found in a spherical bearing.
[0026] The limiting edge 115 includes two side edges, forming a symmetrical V-shaped structure. The small opening end formed by the two side edges faces the threaded hole located on the rotating shaft 111, while the large opening end faces the slide plate 113.
[0027] The operating principle of the blade assembly 11 is as follows: The drive mechanism 12 controls the slide plates 113 at both ends of the rotating shaft 111 to move closer or further apart, causing the blades 112 to swing around the threaded hole on the rotating shaft 111 as the rotation center. When the slide plates 113 move to the left or right end point of the designed stroke, the blades 112 on both sides of the rotating shaft 111 swing in opposite directions. At this time, the motor drives the rotating shaft 111 to rotate. The blades 112 at both ends of the rotating shaft 111 can divide the space where the liquid is located into two in the mixing chamber, causing the liquid in the left and right spaces to move closer or further apart. The strong back-and-forth flushing action makes the liquid at both ends and the central area of the tank fully agitated, reducing the probability of dead zones in the mixing.
[0028] Preferably, depending on the volume of the liquid being stirred and the load-bearing capacity of the blade 112, the reciprocating rotation of the motor can be selected during the stirring process, or the motor can be controlled to reverse after stirring stops.
[0029] When the blade 112 is assembled onto the rotating shaft 111, a certain clearance is maintained between the blade 112 and the rotating shaft 111 to allow the blade 112 to swing.
[0030] Furthermore, the limiting ridge 115 includes two side ridges forming a figure-eight structure. The blade 112 is located in the middle of the corresponding figure-eight and can swing between the two side ridges to improve the stirring stability of the blade 112. Because the slide plate 113 can move along the axis of the rotating shaft 111, the blade 112 generates two left and right swing endpoints during the swinging process. When the blade 112 is located at the two swing endpoints respectively, the blade 112 and the inner wall of the corresponding side ridge are in contact. In this way, the blade 112 can be supported by a certain force during the stirring process, which alleviates the problem of reduced stirring stability caused by the movable design of the blade 112.
[0031] It should be noted that when blade 112 is in contact with the side edge, the motor needs to be selected with an appropriate rotation direction.
[0032] Preferably, when the slide plate 113 is at the midpoint of its movable stroke, the blade 112 is in a state perpendicular to the horizontal plane.
[0033] like Figures 5-6A drive mechanism 12 is installed on both the left and right sides of the rotating shaft 111 to control the oscillation of the corresponding blades 112. The drive mechanism 12 includes a battery pack 121, an electromagnet 122, a driven plate 123, a slide 124, and a telescopic rod 125. The rotating shaft 111 is hollow, and a first stepped platform is opened in the inner wall of the rotating shaft 111. The battery pack 121 slides into the rotating shaft 111 from one end of the hollow rotating shaft 111 and abuts against the first stepped platform. Then, the electromagnet 122 is successively placed in the shaft. Both 21 and electromagnet 122 are electrically connected to metal contacts, and the two are electrically connected through the metal contacts. A driven plate 123 is fixed on the slide plate 113. A groove 124 is opened on the rotating shaft 111. The driven plate 123 passes through the groove 124 and extends into the internal cavity of the rotating shaft 111. The telescopic rod 125 includes a bottom end and a movable end. The bottom end and the movable end are elastically slidably connected by a spring. The spring is connected between the bottom end and the movable end. The end face of the driven plate 123 and the movable end are connected by threaded fasteners. A second stepped surface is also provided on the inner wall of the rotating shaft 111. When the bottom end face of the telescopic rod 125 is attached to the second stepped surface, it proves that the telescopic rod 125 is installed in place. When the telescopic rod 125 is installed in place, it and the bottom fixed abutment rod press against the end face of the electromagnet 122, pressing the battery pack 121 and the electromagnet 122 onto the first stepped surface. Then, the cover is removed, and the cover applies a certain pressure to the bottom end of the telescopic rod 125, pressing it against the second stepped surface, thereby completely assembling the entire drive mechanism 12 into the inside of the rotating shaft 111.
[0034] The working principle of electromagnet 122 is as follows: when energized, the current generates a magnetic field and magnetizes the iron core, thus producing strong magnetism; when de-energized, the current disappears, the magnetic field disappears, the iron core demagnetizes, and the magnetism disappears almost immediately. Since this is existing technology, it will not be elaborated further.
[0035] The driven plate 123 is made of magnetic material. When the battery pack 121 supplies power to the electromagnet 122, the electromagnet 122 generates magnetism, attracting the driven plate 123 to overcome elastic force and approach its magnetic end. The driven plate 123 then drives the slide plate 113 to slide on the rotating shaft 111. When the electromagnet 122 is not energized, the driven plate 123 is at the starting point of the displacement. When the electromagnet 122 is energized and attracts the driven plate 123 to its own side, the driven plate 123 is at the ending point of the displacement.
[0036] The battery pack 121 and the external controller are connected by a wireless signal transmission mode to control the switching on and off of the switch inside the battery pack 121. That is, the relay or semiconductor device in the switching circuit is triggered by wireless signal, infrared / radio frequency / network to physically cut off or connect the current path.
[0037] It should be noted that the battery pack 121 in this embodiment is an electrical component with its own switching circuit.
[0038] It should be noted that the sliding range of the slide plate 113 on the pivot 111 is relatively small. A sealing ridge 126 is fixed on the side of the slide plate 113 facing the slide groove 124, and a sealing groove 127 is provided on the pivot 111. The sealing ridge 126 slides within the sealing groove 127 to improve the sealing performance of the slide plate 113 during movement. The sealing ridge 126 is a consumable part and needs to be replaced after a certain service life to ensure the dryness of the internal space of the pivot 111.
[0039] Preferably, a sliding groove is provided in the rotating shaft 111, and a dovetail groove is provided on the side wall of the sliding groove. Dovetail sliding edges are provided on both sides of the sliding plate 113. The sliding edges can slide in the dovetail groove. When the dovetail edge is inserted into the dovetail groove, a sealing strip is provided between the side wall of the sliding plate 113 and the inner wall of the sliding groove. The sealing strip is adhered to the sliding plate 113.
[0040] Several metering pumps 20 are installed above the mixing silo. The output ports of the metering pumps 20 are connected to the mixing silo, and the metering pumps 20 can provide the ability to accurately deliver materials into the mixing silo. Since the installation method of the metering pumps 20 is existing technology, it will not be described in detail.
[0041] In the low-water dyeing process of polyester fabrics, when faced with high-concentration disperse dyes, silicone-based defoamers, and highly efficient auxiliaries such as alkalis (e.g., NaOH), the core advantage of the aforementioned centrally oriented fan-blade stirring structure lies in its strong axial reciprocating flow energy, which instantly tears apart the micro-particle clusters of disperse dyes. Simultaneously, it drives the low-surface-tension silicone-based defoamer to diffuse uniformly in a low-liquid-volume environment, preventing localized foam runaway. At the same time, the uniform shear field formed by the blades' synchronous rotation around the central fulcrum effectively inhibits the crystallization and deposition of high-concentration alkalis on the tank wall, ensuring rapid penetration and dispersion of the pH adjuster. This not only significantly shortens the dissolution time of the auxiliaries but also greatly reduces color variations and stains caused by uneven auxiliary distribution, ensuring a high success rate for dyeing in one pass while conserving water.
[0042] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A device for quantitative application and mixing of highly efficient auxiliaries for low-water dyeing of polyester, characterized in that, include: A horizontally positioned mixing silo; The blade assembly (11) includes a rotating shaft (111), blades (112) and a sliding plate (113). The rotating shaft (111) is fixedly connected to the output shaft of the energized motor. The rotating shaft (111) is arranged along the horizontal axis of the mixing bin. The sliding plates (113) with symmetrical movement are provided on both sides of the rotating shaft (111). The sliding plates (113) and the rotating shaft (111) are connected in a sealed sliding connection. One end of the blade (112) is connected to the rotating shaft (111) through a spherical bearing and the other end is connected to the sliding plate (113) through a spherical bearing. When the sliding plate (113) moves, the blade (112) deflects around the connection point with the rotating shaft (111) as the rotation center.
2. The device for quantitative application and mixing of high-efficiency auxiliaries for low-water dyeing of polyester according to claim 1, characterized in that, Both the rotating shaft (111) and the sliding plate (113) have a number of threaded holes corresponding to the number of blades (112). The spherical bearing includes balls and a base (114). Two balls are fixed on the blade (112), and each ball is embedded in the base (114). The base (114) is threadedly connected to the corresponding threaded hole. When the base (114) is fully screwed into the threaded hole, there is a gap between the blade (112) and the rotating shaft (111).
3. The device for quantitative application and mixing of high-efficiency auxiliaries for low-water dyeing of polyester according to claim 1, characterized in that, The rotating shaft (111) is fixed with a limiting edge (115). The limiting edge (115) includes two side edges that form a figure-eight shape. The blade (112) swings between the two side edges and can abut against the side wall of either side edge. The small opening formed by the figure-eight side edges is set towards the threaded hole on the rotating shaft (111), and the large opening is set towards the slide plate (113).
4. The device for quantitative application and mixing of high-efficiency auxiliaries for low-water dyeing of polyester according to claim 1, characterized in that, The device also includes a drive mechanism (12) symmetrically installed at both ends of the rotating shaft (111), including a battery pack (121), an electromagnet (122), a driven plate (123), and a slide (124). A cavity is opened in the rotating shaft (111). The battery pack (121) and the electromagnet (122), which are electrically connected together, are both located in the cavity. A slide (124) is opened on the side wall of the rotating shaft (111). The driven plate (123) located in the cavity passes through the slide (124) and is fixed to the slide plate (113). The driven plate (123) is magnetic. The battery pack (121) and the external controller are connected by an electrical signal. When the external controller controls the battery pack (121) to supply power to the electromagnet (122), the electromagnet (122) generates magnetism to drive the driven plate (123) to approach the magnetic attraction surface of the electromagnet (122).
5. The device for quantitative application and mixing of high-efficiency auxiliaries for low-water dyeing of polyester according to claim 4, characterized in that, The cavity is also equipped with a telescopic rod (125), which includes a bottom end and a movable end that are elastically slidably connected. The movable end is fixed to the driven plate (123), and the bottom end is used to fix it in the cavity of the rotating shaft (111).
6. The device for quantitative application and mixing of high-efficiency auxiliaries for low-water dyeing of polyester according to claim 1, characterized in that, The device is also equipped with a metering pump (20), which is used to meterly add high-efficiency additives to the mixing silo.