Anti-settling color ink reservoir

Abstract

The utility model relates to the technical field of ink production, and concretely relates to a color ink storage tank with anti-deposition, which comprises: a heat preservation sleeve, which is structured as a columnar structure with an open top, and is sequentially provided from inside to outside with a phase change heat conducting layer, a spiral pipe and a heat preservation layer; a circulating water system, which is connected to the inlet and outlet of the spiral pipe, and is used to provide circulating water at a target temperature into the spiral pipe; and a tank body, which can be put into the inside of the heat preservation sleeve through the opening on the top of the heat preservation sleeve. The tank body and the heat preservation sleeve are designed in a split type, so that only the independent storage tank needs to be replaced or cleaned when the color ink is changed and cleaned, heat exchange is realized through the phase change heat conducting layer and the spiral pipe, the latent heat release characteristics of the phase change material are used to compensate for the water temperature fluctuation, the axial temperature difference of the tank body is controlled within a small range, the differential settlement of pigments with different densities is effectively inhibited, and the color difference is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ink production technology, and more specifically to a color ink storage tank for preventing sedimentation. Background Technology

[0002] During the storage of colored inks, pigment dispersion stability is a core requirement for ensuring color consistency and printing quality. Traditional storage tanks often employ an internal jacketed structure, with circulating warm water introduced through spiral channels within the jacket to maintain ink temperature uniformity and inhibit sedimentation. However, colored inks typically contain organic pigments, metal complexes, and dispersants, making their composition complex and significantly more sensitive to temperature than ordinary inks.

[0003] The existing technology has the following limitations in practical applications: First, the integrated design of the jacket and the tank means that the entire machine must be shut down and emptied during maintenance; Second, the lag in the response of the pure water circulation temperature control can easily cause axial temperature difference in the tank, resulting in selective sedimentation of pigments with large density differences in the colored ink (such as titanium dioxide and phthalocyanine blue), causing hue shift; Third, the traditional jacketed tank is difficult to adapt to the differentiated heat preservation requirements of inks with different viscosities due to its fixed flow channel structure, requiring customized modification and resulting in low equipment reuse rate.

[0004] Furthermore, the localized gelation of high-solids content color inks at low temperatures due to heat loss in the flow channels further exacerbates the difficulty of tank cleaning and increases energy costs. With the printing industry's increasing demand for rapid delivery of multi-color inks, developing anti-sedimentation color ink storage tanks that are compatible with efficient thermal management, low maintenance costs, and adaptable to various types of color inks has become an urgent industry need. Utility Model Content

[0005] To address the technical problems existing in existing ink storage tanks, this utility model proposes a color ink storage tank with anti-sedimentation properties, comprising:

[0006] The insulation jacket is constructed as a columnar structure with an opening at the top, and from the inside out, it is provided with a phase change heat conduction layer, a spiral tube and an insulation layer in sequence.

[0007] A circulating water system, connected to the inlet and outlet of the spiral tube, is used to supply circulating water at the target temperature into the spiral tube;

[0008] The tank can be inserted into the inside of the insulation sleeve through the opening at the top of the insulation sleeve, and the outer wall of the tank is in contact with the inner wall of the phase change heat conduction layer.

[0009] The phase change heat conduction layer includes a skeleton structure and a phase change heat conduction structure filled between the skeleton structure. The phase change heat conduction structure includes multiple phase change heat conduction strips arranged along the height direction of the tank, and the multiple phase change heat conduction strips are centrally symmetrically distributed around the axis of the tank.

[0010] Preferably, the skeleton structure includes a bottom skeleton and a sidewall skeleton. The bottom skeleton includes a heat-conducting ring and ribs extending from the inner wall of the heat-conducting ring toward the center. The sidewall skeleton includes a plurality of heat-conducting strips connected to the heat-conducting ring.

[0011] Preferably, a filling gap is formed between adjacent heat-conducting strips, and the phase change heat-conducting strip fills the filling gap, so that the heat-conducting strips are arranged at intervals and the sidewalls are in close contact with each other.

[0012] Preferably, the skeleton structure is an aluminum alloy structure.

[0013] Preferably, the width of the heat-conducting strip is less than or equal to the width of the phase change heat-conducting strip.

[0014] Preferably, a gap is formed between adjacent ribs, and the gap is filled with a phase change heat conduction block, the area of ​​which is larger than the area of ​​the rib.

[0015] Preferably, the cross-section of the spiral tube is rectangular, and the inner wall of the spiral tube is bonded to the phase change heat conduction layer.

[0016] Preferably, the insulation layer includes an aerogel insulation layer.

[0017] Preferably, the circulating water system includes a conveying pipe, the first end of which is connected to the inlet of the spiral tube and the second end of which is connected to the outlet of the spiral tube. The conveying pipe is connected in series with a circulating pump, a heater and a flow valve.

[0018] Compared with the prior art, the advantages of this utility model are:

[0019] This application features a separate design for the tank and the insulation jacket, which allows only the independent storage tank to be replaced or cleaned when changing or cleaning colored inks. Heat exchange is achieved through a phase change heat conduction layer and a spiral tube. The latent heat release characteristics of the phase change material are used to compensate for water temperature fluctuations, keeping the axial temperature difference of the tank within a small range. This effectively suppresses the differential sedimentation of pigments of different densities and reduces color deviation.

[0020] Meanwhile, due to the split design, the spiral tube can be designed with different pitches as needed and combined with phase change heat conduction layers of different thicknesses to match the differentiated heat preservation requirements of inks with different viscosities, thereby improving the reusability of the equipment. This modular design also reduces the cost of single tank modification and significantly improves the storage quality and economic benefits of color inks. Attached Figure Description

[0021] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of the anti-sedimentation colored ink storage tank shown in this utility model;

[0023] Figure 2 This is a schematic diagram of the spiral tube of this utility model wound around the phase change heat conduction layer;

[0024] Figure 3 This is a schematic diagram of the structure of the tank body located inside the phase change heat conduction layer shown in this utility model;

[0025] Figure 4 This is a schematic diagram of the bottom structure of the phase change heat conduction layer shown in this utility model. Detailed Implementation

[0026] To better understand the technical content of this utility model, specific embodiments are provided below in conjunction with the accompanying drawings.

[0027] Combination Figure 1 As shown, this utility model proposes a color ink storage tank that prevents sedimentation, including an insulation sleeve 10, a circulating water system 20 and a tank body 30. The insulation sleeve 10 is constructed as a columnar structure with an opening at the top, and is provided with a phase change heat conduction layer 11, a spiral tube 12 and an insulation layer 13 from the inside to the outside.

[0028] The circulating water system 20 is connected to the inlet and outlet of the spiral tube 12 and is used to provide circulating water at the target temperature into the spiral tube 12.

[0029] In an optional embodiment, the circulating water system 20 includes a conveying pipe 21, with a first end connected to the inlet of the spiral tube 12 and a second end connected to the outlet of the spiral tube 12. The conveying pipe 21 is connected in series with a circulating pump 22, a heater 23 and a flow valve 24.

[0030] In this way, the water in the conveying pipe 21 is heated by the heater 23 and continuously transported to the spiral pipe 12 by the circulating pump 22, which can heat and keep the tank 30 warm.

[0031] The spiral tube 12 is equipped with thermometers at its inlet and outlet to detect the inlet and outlet water temperatures. By controlling the inlet water temperature, the tank 30 can be kept within a suitable temperature range.

[0032] The tank 30 can be inserted into the inner side of the insulation sleeve 10 through the opening above the insulation sleeve 10, and the outer wall of the tank 30 is in contact with the inner wall of the phase change heat conduction layer 11.

[0033] Thus, the separate design of the tank body 30 and the insulation jacket 10 allows for the replacement or cleaning of the independent storage tank when changing or cleaning the colored ink, avoiding the contamination of the spiral flow channel in the interlayer caused by the traditional integrated structure.

[0034] Furthermore, the phase change heat conduction layer 11 includes a skeleton structure and a phase change heat conduction structure filled between the skeleton structure. The phase change heat conduction structure includes multiple phase change heat conduction strips 114 arranged along the height direction of the tank 30. The multiple phase change heat conduction strips 114 are centrally symmetrically distributed around the axis of the tank 30.

[0035] Optionally, the phase change heat conduction strip 114 includes a silicone rubber outer layer and a phase change material and a thermally conductive filler filled in the silicone rubber outer layer. The phase change material can be paraffin wax, etc., and the thermally conductive filler can be a metal filler or a ceramic filler.

[0036] Thus, when a temperature difference is formed between the inlet and outlet of the spiral tube 12, the temperature difference along the axial direction of the tank 30 can be reduced by multiple longitudinally arranged phase change heat conduction strips 114. That is, the latent heat release characteristics of the phase change material compensate for the temperature fluctuation of the inlet / outlet water, so that the axial temperature difference of the tank is controlled within a small range, effectively suppressing the differential sedimentation of titanium dioxide and organic pigments.

[0037] Furthermore, in combination Figures 2 to 4 As shown, the skeleton structure includes a bottom skeleton and a sidewall skeleton. The bottom skeleton includes a heat-conducting ring 111 and ribs 115 extending from the inner wall of the heat-conducting ring 111 toward the center. The sidewall skeleton includes a plurality of heat-conducting strips 112 connected to the heat-conducting ring 111.

[0038] The skeleton structure can support the phase change heat structure, allowing the phase change heat material to fill between the skeleton structure and be located at the bottom and side walls of the tank, thus uniformly insulating the side walls and bottom of the tank 30.

[0039] like Figure 2 as well as Figure 3 As shown, a filling gap 113 is formed between adjacent heat-conducting strips 112, and a phase change heat-conducting strip 114 is filled in the filling gap 113, so that the heat-conducting strips 112 and the phase change heat-conducting strips 114 are arranged at intervals and their sidewalls are in close contact with each other.

[0040] Thus, by placing the phase change heat conduction strip 114 in the filling gap 113, the phase change heat conduction strip 114 can be supported.

[0041] In an optional embodiment, the skeleton structure is an aluminum alloy structure.

[0042] Optionally, the width of the heat-conducting strip 112 is less than or equal to the width of the phase change heat-conducting strip 114. The wider the phase change heat-conducting strip 114, the more uniform the temperature field on the outside of the tank 30.

[0043] Combination Figure 4 As shown, a gap 116 is formed between adjacent ribs 115, and a phase change heat conduction block 117 is filled in the gap 116. The area of ​​the phase change heat conduction block 117 is larger than the area of ​​the rib 115.

[0044] The phase change heat conduction block 117 has the same structure as the phase change heat conduction strip 114, and also includes a silicone rubber outer layer and a phase change material and thermally conductive filler filled in the silicone rubber outer layer. The phase change material can be paraffin wax, etc., and the thermally conductive filler can be metal filler or ceramic filler.

[0045] In this way, the larger area of ​​the phase change heat conduction block 117 achieves a more uniform heat conduction effect on the bottom of the tank 30.

[0046] Preferably, the cross-section of the spiral tube 12 is rectangular, and the inner wall of the spiral tube 12 is bonded to the phase change heat conduction layer 11.

[0047] In this way, the inner wall of the spiral tube 12 and the phase change heat conduction layer 11 can achieve a better heat exchange effect.

[0048] Preferably, the insulation layer 13 includes an aerogel insulation layer. The aerogel insulation layer achieves good insulation effect through its nanoporous structure, and through fiber reinforcement or composite structure, its compressive strength can reach 0.5 to 2 MPa, meeting the load requirements.

[0049] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A color ink storage tank for preventing sedimentation, characterized in that, include: The insulation jacket (10) is constructed as a columnar structure with an opening at the top, and from the inside out are arranged a phase change heat conduction layer (11), a spiral tube (12) and an insulation layer (13). A circulating water system (20) is connected to the inlet and outlet of the spiral tube (12) for supplying circulating water at a target temperature into the spiral tube (12); The tank (30) can be inserted into the inner side of the insulation sleeve (10) through the opening above the insulation sleeve (10), and the outer wall of the tank (30) is in contact with the inner wall of the phase change heat conduction layer (11); The phase change heat conduction layer (11) includes a skeleton structure and a phase change heat conduction structure filled between the skeleton structure. The phase change heat conduction structure includes a plurality of phase change heat conduction strips (114) arranged along the height direction of the tank (30). The plurality of phase change heat conduction strips (114) are centrally symmetrically distributed around the axis of the tank (30).

2. The anti-sedimentation colored ink storage tank according to claim 1, characterized in that, The skeleton structure includes a bottom skeleton and a sidewall skeleton. The bottom skeleton includes a heat-conducting ring (111) and ribs (115) extending from the inner wall of the heat-conducting ring (111) toward the center. The sidewall skeleton includes a plurality of heat-conducting strips (112) connected to the heat-conducting ring (111).

3. The anti-sedimentation colored ink storage tank according to claim 2, characterized in that, A filling gap (113) is formed between adjacent heat-conducting strips (112), and the phase change heat-conducting strip (114) is filled in the filling gap (113), so that the heat-conducting strips (112) and the phase change heat-conducting strips (114) are arranged at intervals and their sidewalls are in close contact with each other.

4. The anti-sedimentation colored ink storage tank according to claim 2, characterized in that, The skeleton structure is an aluminum alloy structure.

5. The anti-sedimentation colored ink storage tank according to claim 2, characterized in that, The width of the heat-conducting strip (112) is less than or equal to the width of the phase change heat-conducting strip (114).

6. The anti-sedimentation colored ink storage tank according to claim 2, characterized in that, A gap (116) is formed between adjacent ribs (115), and a phase change heat conduction block (117) is filled in the gap (116). The area of ​​the phase change heat conduction block (117) is larger than the area of ​​the rib (115).

7. The anti-sedimentation colored ink storage tank according to claim 1, characterized in that, The spiral tube (12) has a rectangular cross-section, and the inner wall of the spiral tube (12) is attached to the phase change heat conduction layer (11).

8. The anti-sedimentation colored ink storage tank according to claim 1, characterized in that, The insulation layer (13) includes an aerogel insulation layer.

9. The anti-sedimentation colored ink storage tank according to claim 1, characterized in that, The circulating water system (20) includes a conveying pipe (21), the first end of which is connected to the inlet of the spiral pipe (12) and the second end of which is connected to the outlet of the spiral pipe (12). The conveying pipe (21) is connected in series with a circulating pump (22), a heater (23) and a flow valve (24).

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