A runner substrate, a method for preparing the same, and a runner

Abstract

The present application belongs to the technical field of rotating wheel, and particularly relates to a rotating wheel base material, a preparation method thereof and a rotating wheel. The preparation method of the rotating wheel base material comprises the following steps: S1: wax mold making; S2: coating adhesive on fiber paper to obtain treated paper; S3: winding the treated paper on the surface of the wax mold to obtain a combination; S4: bonding a plurality of combinations on the untreated treated paper to obtain a flat combination, and then layering the flat combination to form a multi-layer structure to obtain an assembly; and S5: obtaining the rotating wheel base material by performing wax melting treatment on the assembly. The preparation method of the rotating wheel base material can prepare the rotating wheel base material with a desired shape according to requirements. The rotating wheel base material performs outstandingly in terms of airflow distribution, base material pressure resistance and moisture absorption capacity.

Description

Technical Field

[0001] This invention belongs to the field of rotary wheel technology, and particularly relates to a rotary wheel substrate, its preparation method and the rotary wheel. Background Technology

[0002] Rotary dehumidifiers offer precise temperature and humidity control. In recent years, with industrial upgrading, the demand for rotary dehumidifiers has surged, and they are gradually gaining consumer recognition. The core component of a rotary dehumidifier is the dehumidifying rotor, whose core is typically made of fiberglass corrugated paper.

[0003] The load capacity of the absorbent material per unit volume is directly proportional to the specific surface area of ​​the substrate. Traditionally, the corrugated shape of fiberglass corrugated paper used as substrate for dehumidifying rollers is corrugated, such as... Figure 4 As shown, traditional dehumidifying rotor substrates have limited moisture-absorbing material capacity per unit volume, resulting in low material utilization and limiting further improvements in dehumidification performance. Furthermore, the corrugated structure leads to high wind resistance at different wind speeds, increasing energy consumption and reducing the overall energy efficiency of the system. Generally, shapes that maximize space per unit size, such as circles, are preferred. However, fiberglass paper cannot be stamped like steel or aluminum; it typically requires pressing with a roller corrugating machine or bending with a folding machine, making it impossible to produce fiberglass corrugated paper of the desired shape. Fiberglass corrugated paper as a dehumidifying rotor substrate also has certain requirements in terms of compressive and shear resistance. A rotor substrate with good compressive strength can improve the yield rate during rotor manufacturing and its subsequent service life. Therefore, there is an urgent need to develop a rotor substrate with strong moisture absorption capacity and good compressive strength.

[0004] CN116288922A discloses a basalt fiber composite felt substrate for dehumidifier desiccant rollers. By forming a mesh layer using multiple basalt fibers and metal fibers, it exhibits higher mechanical, thermal, and chemical stability than traditional glass fiber corrugated paper, and is also more conducive to extending the service life of the dehumidifier desiccant roller. Although this method significantly improves the strength of the desiccant roller substrate, the basis weight of the basalt fiber-metal fiber composite layer is much greater than that of glass fiber, resulting in an excessively heavy desiccant roller, which is detrimental to industrial applications.

[0005] CN116518472A discloses a dehumidifying rotor, comprising: a frame, a corrugated body, a shaping body, and a connecting structure. By effectively reducing the surface coverage of the corrugated body by the connecting structure, the surface area of ​​the corrugated body that can contact humid air is effectively increased. Although this method increases the contact surface area between the corrugated body and air to some extent, the improvement effect is poor, and the absence of connecting points leads to a decrease in the overall strength of the rotor core. Summary of the Invention

[0006] In view of the above-mentioned problems in the prior art, the present invention provides a rotating wheel substrate, its preparation method and the rotating wheel, which can prepare a rotating wheel substrate of desired shape as needed, and the rotating wheel substrate has excellent moisture absorption and pressure resistance.

[0007] To achieve the above objectives, the technical solution provided by the present invention is as follows: On the other hand, this application also provides On one hand, the present invention provides a method for preparing a rotating substrate, comprising the following steps: S1: Wax model making; S2: The fiber paper is coated with an adhesive to obtain treated paper; S3: Wrap the treatment paper around the surface of the wax model to obtain the assembly; S4: Several assemblies are glued onto unwound treated paper to obtain a flat assembly. The flat assemblies are then stacked and assembled into a multi-layer structure to obtain an assembly. S5: The roller substrate is obtained by melting wax on the assembly.

[0008] Optionally, the wax melting process adopts a stepped heating method, specifically including: first heating to 80-120℃ and holding for 1-3 hours to solidify the adhesive, then heating to 150-200℃ and holding for 1-3 hours to melt the wax mold; and then heating to 350-500℃ and holding for 5-7 hours to set the assembly.

[0009] Optionally, it also includes strengthening and shaping, which includes: coating the wax-treated assembly with a strengthening agent and then treating it at 500-700°C for 5-7 hours.

[0010] Optionally, the reinforcing agent components include surfactants, water, dispersants, and organic acids.

[0011] Optionally, the surfactant is ethylenediamine oleate or isopropanolamide.

[0012] Optionally, the dispersant is polyoxyethylene alkylphenol ether or sodium tripolyphosphate.

[0013] Alternatively, the organic acid may be dodecyl sulfonic acid or succinic acid.

[0014] Optionally, the assembly after wax melting can be cleaned of residual wax before strengthening and shaping. The residual wax cleaning includes washing the assembly after wax melting with an acid solution and then drying it.

[0015] Optionally, the acid solution is an aqueous solution of formic acid, acetic acid, or citric acid. Optionally, the mass fraction of the acid solution is 10-15%.

[0016] Optionally, the drying temperature is 80-120℃ and the processing time is 1-3 hours.

[0017] Optionally, the wax model is cylindrical or hexagonal prism-shaped. Optionally, the wax model is cylindrical with a diameter of 1.5-3 mm.

[0018] Optionally, the wax model is made of polyethylene wax, Fischer-Topsy wax, hydrogenated castor oil wax, or atactic polypropylene wax. Optionally, the wax model is Fischer-Topsy wax.

[0019] Optionally, the fiber paper, after being coated with adhesive, needs to be pressed and extruded by rollers. Optionally, the rollers are of two types, upper and lower, and the fiber paper coated with adhesive passes through the gap between the upper and lower rollers. Optionally, the gap between the rollers is adjustable vertically.

[0020] Optionally, the fibers in the fiber paper are one or more selected from ceramic fibers, glass fibers, activated carbon fibers, and synthetic fibers. Optionally, the fiber paper is glass fiber paper.

[0021] Optionally, the adhesive is a mixture of an organic adhesive and / or an inorganic adhesive with water. The inorganic adhesive includes one or more of acrylic, polyurethane, or silicone; the organic adhesive includes sodium carboxymethyl cellulose and / or epoxy resin. Optionally, the adhesive is applied by spraying, dipping, or smearing.

[0022] Optionally, in S3, the number of layers of the treatment paper wound on the wax mold surface can be a single layer or multiple layers.

[0023] Optionally, the treatment paper in the flat assembly is bonded to one side or the top and bottom sides of several assemblies arranged side by side.

[0024] Secondly, this application also provides a rotor substrate prepared according to the above method.

[0025] Thirdly, this application also provides a rotor, including the aforementioned rotor substrate.

[0026] Compared with the prior art, this application has at least the following beneficial effects: I. This invention obtains a rotary substrate of the desired shape by winding treated paper onto the surface of a wax mold of the desired shape, assembling it into an assembly, and then melting the wax through a stepped heating process. First, the adhesive is cured at a certain temperature, then the wax mold is melted at a certain temperature, and finally the assembly is shaped. The stepped heating process ensures the stability of the adhesive and the wax melting process does not affect the adhesive or the assembly. After shaping and strengthening, the fiber paper transitions to a vitrified state, further improving the overall hardness.

[0027] Second, the present invention greatly improves the distribution of airflow inside the rotor through the design of the combined structure, reduces airflow resistance, and enables the gas to contact the moisture-absorbing fiber paper material more evenly, thereby improving dehumidification efficiency and overall operating performance.

[0028] Third, the rotor substrate obtained by this invention has stronger compressive and shear resistance, which enhances the stability and durability of the structure, extends the service life of the rotor, and reduces maintenance costs.

[0029] Fourth, the rotating base material of the present invention achieves a significant increase in the load capacity per unit volume. Under the same volume, more moisture-absorbing material can be loaded, more moisture can be adsorbed per unit volume, and the utilization efficiency of the material is improved.

[0030] In summary, the preparation method of the rotary substrate in this invention provides a new approach to the preparation of rotary substrates; the rotary substrate of this invention exhibits excellent performance in terms of airflow distribution, substrate pressure resistance, and material utilization, providing an efficient, energy-saving, and reliable solution for the industrial dehumidification field. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the rotary substrate preparation apparatus of the present invention; Figure 2 This is a schematic diagram of the assembly structure of the present invention; Figure 3 This is a schematic diagram of the rotary wheel structure of the present invention; Figure 4 This is a schematic diagram of the structure of a traditional corrugated rotary wheel substrate.

[0032] Explanation of reference numerals in the attached figures: 1. Roller; 2. Fiber paper; 3. Glue bucket; 4. Roller bar; 5. Cutting knife; 6. Wax mold; 7. Conveyor belt; 8. Upper paper layer; 9. Lower paper layer; 10. Assembly table; 11. Roller frame; 12. Roller substrate. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings: Unless otherwise specified, the experimental methods used in the embodiments of this invention are all conventional methods.

[0034] All reagents and materials used in this example can be purchased routinely. The quantitative experiments involved in the examples were all repeated at least three times, and the results were averaged.

[0035] Raw material source: The adhesive is a mixture of acrylic acid, sodium methyl cellulose, and water in equal mass ratios. Reinforcing agent: In this embodiment, the reinforcing agent is a mixture of ethylenediamine oleate, water, polyoxyethylene alkylphenol ether, and succinic acid in equal mass ratios; the specific components of the reinforcing agent can be adjusted as needed.

[0036] Conventional rotary substrate: Glass fiber paper is heated and pressed by a corrugated paper machine to form a corrugated paper core with a corrugated structure. The corrugated paper core is bonded to the flat upper and lower paper layers using an adhesive. Finally, it is dried and cured to form a conventional rotary substrate. The glass fiber paper used in the preparation of this conventional rotary substrate is 0.2 mm thick, and the corrugated triangles on it are equilateral triangles with a side length of 2.2 mm. The adhesive used is the same as that used in this application. Each layer includes an upper paper layer and a lower paper layer, and the upper and lower paper layers are bonded together with adhesive. Example 1

[0037] This invention provides a method for preparing a rotating wheel substrate, comprising the following steps: Several wax models 6 with a diameter of 2.0 mm and a length of 200 mm were prepared using Fischer-Topsy wax, such as... Figure 1 As shown, a 0.2mm thick sheet of flat fiberglass paper 2 is transported by roller 1 and impregnated into a glue tank 3 containing adhesive. Both sides of the fiberglass paper 2 are coated with adhesive, and then it is pressed and extruded by rollers 4 with a gap of 0.22mm between the upper and lower rollers to become treatment paper. The treatment paper is cut by a cutter 5 on a conveyor belt 7, and the treatment paper is just enough to cover the wax model 6 around. The cut treatment paper is manually wound onto the surface of the wax model 6 on the conveyor belt 7 to obtain an assembly. The cut ends of the treatment paper are directly bonded with adhesive after winding.

[0038] On the assembly table 10, a flat assembly is obtained by assembling the lower paper layer 9, several continuously and closely contacting assemblies, and the upper paper layer 8 in a bottom-to-top order. Different flat assemblies are then stacked and assembled into a multi-layer structure to obtain an assembly, such as... Figure 2 As shown, during the stacking assembly process, adhesive is applied between the upper and lower paper layers of different flat assemblies for bonding. The specific number of assemblies in each layer and the number of layers of flat assemblies in the stacking assembly are determined according to the actual situation.

[0039] Then, a wax melting process is performed: the wax melting process adopts a stepped heating method. First, the temperature is raised to 80-120℃ to solidify the adhesive, then raised to 150-200℃ to melt the wax model; finally, the temperature is raised to 350-500℃ to set the assembly. In this embodiment, the assembly is placed in a heater with a stepped heating program. First, it is kept at 80℃ for 3 hours to solidify, then raised to 200℃ and kept for 3 hours to melt the wax model, and finally raised to 350℃ and kept for 5 hours to set the assembly. The wax melting process is then complete.

[0040] Then, the shaped assembly is rinsed three times with a 10% citric acid solution. After visually confirming that there is no wax residue, it is dried in a muffle furnace at 120°C. Finally, the assembly after melting the wax is coated with a reinforcing agent and held at 600°C for 6 hours to strengthen and shape it, thus obtaining the roller substrate.

[0041] The wheel core is obtained by cutting the base material of the wheel according to the required size of the wheel, and then directly assembling it with the wheel frame 11, such as... Figure 3 This will produce a rotating wheel with a circular corrugated hole.

[0042] Comparative Example 1 The difference between this comparative example and Example 1 is that the wax melting process does not involve a stepped heating process, but directly heats the wax mold to 150-200°C to melt it, thus completing the wax melting process.

[0043] Rotors were prepared using the rotor substrates prepared in Example 1 and Comparative Example 1, and conventional rotor substrates (e.g., Figure 4 The rotor dimensions are: radius 550mm, thickness 200mm. Wind resistance tests were conducted at different wind speeds under the same conditions, and the results are shown in Table 1. The rotor substrate of this invention has a larger specific surface area, improving mass transfer efficiency. The rotor obtained using this invention exhibits lower wind resistance than those obtained using conventional rotor substrates at all wind speeds.

[0044] Table 1 Comparison of wind resistance results Example 1 Wind resistance Pa 45 86 127 172 214 262 301 345 Comparative Example 1: Wind Resistance (Pa) 45 86 127 172 214 262 301 345 Conventional wind resistance (Pa) 56 103 152 204 259 319 357 411 The rotor substrate prepared in Example 1 and a conventional rotor substrate were subjected to pressure resistance tests in different directions under the same conditions. The substrate dimensions were 50*50*50mm (length*width*height). The comparison results with the conventional rotor substrate are shown in Table 2. The curvature of the circular hole can disperse the pressure of forces in all directions. The rotor substrate obtained by the scheme in Example 1 of this invention is more pressure resistant in all directions than that of Comparative Example 1 or the conventional rotor substrate, thus improving the service life of the rotor.

[0045] Table 2 Comparison of Pressure Resistance Results Example 1 withstanding pressure N 53 53 698 Comparative Example 1 withstanding pressure N 47 47 570 Standard withstand voltage N 43 27 532 The adsorbent loading performance of the impregnation method was used to test the rotor substrate prepared in Example 1 and a conventional rotor substrate. The rotor substrate had a diameter of 980 mm and a thickness of 200 mm, while the conventional substrate had a loading capacity of 47.6 kg / m³. 3 The load capacity of this invention is 67.1 kg / m³. 3 Compared to traditional substrates, the loading capacity of this invention is increased by 40.9%. Tests show that the dehumidification adsorption capacity of this invention is higher than the conventional 38.77 kg / m³. 3 Increased to 61.52 kg / m 3 This represents an increase of 58.7%.

Claims

1. A method for preparing a rotating wheel substrate, characterized in that, Includes the following steps: S1: Wax model making; S2: The fiber paper is coated with an adhesive to obtain treated paper; S3: Wrap the treatment paper around the surface of the wax model to obtain the assembly; S4: Several assemblies are glued onto unwound treated paper to obtain a flat assembly. The flat assemblies are then stacked and assembled into a multi-layer structure to obtain an assembly. S5: The roller substrate is obtained by melting wax on the assembly.

2. The preparation method according to claim 1, characterized in that, The wax melting process involves a stepped heating process, specifically including: first heating to 80-120℃ to solidify the adhesive, then heating to 150-200℃ to melt the wax mold, and then heating to 350-500℃ to set the assembly.

3. The preparation method according to claim 1, characterized in that, It also includes strengthening and shaping, which includes coating the assembly after wax melting with a strengthening agent and then treating it at 500-700°C.

4. The preparation method according to claim 3, characterized in that, After the wax-treated assembly is cleaned of residual wax, it is then strengthened and shaped. The residual wax cleaning includes washing the wax-treated assembly with an acid solution and then drying it.

5. The preparation method according to claim 1, characterized in that, The wax model is cylindrical or hexagonal prism-shaped.

6. The preparation method according to claim 1, characterized in that, The fiber paper, after being coated with adhesive, needs to be pressed and extruded by rollers.

7. The preparation method according to claim 1, characterized in that, The fibers in the fiber paper are one or more of ceramic fibers, glass fibers, activated carbon fibers, and synthetic fibers.

8. The preparation method according to claim 1, characterized in that, The adhesive is a mixture of organic adhesive and / or inorganic adhesive with water.

9. The rotating substrate prepared by the method according to any one of claims 1-8.

10. A rotary wheel, characterized in that, Includes the rotor substrate as described in claim 9.

Images