Toluene drying device for figured island superfine fiber base cloth

Abstract

The utility model relates to the technical field of superfine fiber base cloth, and discloses a toluene drying device for figured island superfine fiber base cloth, which comprises a first ultrasonic drying unit, a heat preservation partition plate and a second infrared drying unit, the second infrared drying unit is located above the first ultrasonic drying unit and is separated by a heat preservation partition plate. The figured island superfine fiber base cloth is conveyed through a plurality of steering wheels arranged in the device, and is conveyed to the second infrared drying unit from the first ultrasonic drying unit; an ultrasonic generation platform is arranged at the bottom of the first ultrasonic drying unit; a plurality of oscillators are arranged on the ultrasonic generation platform in the width direction of the figured island superfine fiber base cloth; an infrared lamp tube assembly is arranged at the bottom of the second infrared drying unit, and the figured island superfine fiber base cloth is conveyed in a turn-back mode from top to bottom through a steering wheel. According to the drying device, the upper-layer drying unit and the lower-layer drying unit are adopted, superfine fibers are dried rapidly and evenly through ultrasonic heating and infrared heating in sequence, and toluene residues are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of superfine fiber base cloth, more particularly to a toluene drying device for fixed island superfine fiber base cloth. BACKGROUND

[0002] Bio-based fixed island superfine fiber has the advantages of small fineness, good physical properties and green environmental protection, and is a basic material in the field of high-end synthetic leather.

[0003] Bio-based fixed island superfine fiber often uses toluene reduction process in the production process, and a large amount of organic solvent is contained in the fiber gap. Using conventional hot air and infrared oven heating, toluene on the surface of superfine fiber is easy to absorb heat and volatilize, and toluene inside is slow to heat and volatilize, resulting in a large temperature difference between the surface and the inside of superfine fiber. This not only seriously affects the use efficiency of the oven, but also easily causes local high temperature on the surface of superfine fiber and toluene residue problem, ultimately affecting the material properties of superfine fiber and the health of producers and users. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model provides a toluene drying device for fixed island superfine fiber base cloth, which is separated by a heat preservation partition, and adopts a design of two layers of drying units. Superfine fiber base cloth with high toluene content is first heated by ultrasonic to remove a large amount of toluene, and then heated by infrared to remove a small amount of residual toluene. Ultrasonic waves dissipate faster in superfine fiber base cloth with high toluene content, and use ultrasonic resonance to quickly deliver energy to toluene in the internal gap of superfine fiber base cloth, promote the overflow of toluene in the internal gap and prevent local overheating, realize uniform heating and rapid removal of most toluene in superfine fiber base cloth. In the infrared drying unit, the superfine fiber base cloth is designed to advance in a folding manner and be heated by gradient temperature, fully utilizing the space of the drying unit to prevent local high temperature from damaging the physical properties of the superfine fiber base cloth. The hot air generated in this process is returned to the inlet of the first ultrasonic drying unit through the return pipe, which can reduce the heating of the suction cold air and save energy. Thus, the utility model can effectively solve the above problems, quickly and uniformly dry the superfine fiber, and reduce the residue of toluene.

[0005] In order to achieve the above purpose, the utility model is realized by the following technical solutions:

[0006] The application discloses a toluene drying device for islanding superfine fiber base cloth, which comprises a first ultrasonic drying unit, a heat preservation partition and a second infrared drying unit; the second infrared drying unit is located above the first ultrasonic drying unit and is separated by the heat preservation partition; the islanding superfine fiber base cloth is conveyed through a plurality of turning wheels arranged in the device, and is conveyed from the first ultrasonic drying unit to the second infrared drying unit; the bottom of the first ultrasonic drying unit is provided with an ultrasonic wave generating platform; a plurality of oscillators are arranged on the ultrasonic wave generating platform along the width direction of the islanding superfine fiber base cloth, and the oscillators are arranged in parallel along the conveying direction of the islanding superfine fiber base cloth, and the interval width of the parallel arrangement is arranged from dense to sparse along the conveying direction of the islanding superfine fiber base cloth; the bottom of the second infrared drying unit is provided with an infrared lamp tube assembly, a plurality of turning wheels are arranged above the second infrared drying unit along the height direction of the second infrared drying unit, and the islanding superfine fiber base cloth is conveyed in a turn-back mode from top to bottom through the turning wheels.

[0007] The first ultrasonic drying unit generates high-frequency vibration under the action of high-frequency current through the ultrasonic wave generating platform, conducts to the superfine fiber base cloth in contact with the platform in the form of ultrasonic waves, and is used for heating and drying the superfine fiber base cloth. The ultrasonic wave generating platform dissipates sound energy faster in the superfine fiber base cloth with high toluene content, utilizes ultrasonic resonance to quickly deliver energy to toluene in the internal gap of the superfine fiber base cloth, promotes the movement and overflow of toluene in the internal gap of the fiber, and realizes uniform and rapid removal of most toluene in the superfine fiber base cloth. The ultrasonic wave generating platform is installed with a plurality of oscillators, the distribution of the oscillators is arranged from dense to sparse along the conveying direction of the islanding superfine fiber base cloth, and the oscillators are used for controlling the heating and drying temperature and preventing the temperature of the passing superfine fiber base cloth from being too high.

[0008] The bottom of the second infrared drying unit is installed with an infrared lamp tube assembly, which is used for heating the superfine fiber base cloth with low toluene content. A plurality of turning wheels are arranged for controlling the vertical distance between the superfine fiber base cloth and the infrared lamp tube assembly, realizing the turn-back conveying of the superfine fiber base cloth and gradient temperature heating, fully utilizing the space of the drying unit, and preventing local high temperature. The number of the turning wheels is stacked in the infrared drying unit, which is beneficial to improving the space utilization and the drying efficiency.

[0009] The heat preservation partition is used for separating the first ultrasonic drying unit and the second infrared drying unit, and maintaining different temperatures of the two drying units.

[0010] Further preferably, the width of the ultrasonic wave generating platform is 1.8-3.8 m.

[0011] Further preferably, the first ultrasonic drying unit is provided with a telescopic turning wheel I and a telescopic turning wheel II along the conveying direction of the islanding superfine fiber base cloth, and the telescopic turning wheel I and the telescopic turning wheel II are arranged on the front and back sides of the ultrasonic wave generating platform respectively.

[0012] The telescopic steering wheels I and II are located on the front and back sides of the ultrasonic wave generating platform, and can be telescoped up and down to adjust the fitting degree of the superfine fiber base cloth and the ultrasonic wave generating platform.

[0013] Further preferably, the first ultrasonic drying unit further comprises a reflecting plate, a first temperature sensor and a first control panel; the reflecting plate is arranged at the top of the first ultrasonic drying unit; the first temperature sensor is arranged at the bottom of the first ultrasonic drying unit, and is connected with the ultrasonic wave generating platform and the first control panel arranged outside the first ultrasonic drying unit.

[0014] The reflecting plate is used to reflect the ultrasonic wave to the upper surface of the superfine fiber base cloth, reduce the loss of the ultrasonic wave, and improve the heating and drying efficiency.

[0015] Further preferably, the first ultrasonic drying unit further comprises a first toluene gas detector, a first air outlet and a first air extractor; the first toluene gas detector is arranged at the bottom of the first ultrasonic drying unit; the first air outlet is arranged at the top of the first ultrasonic drying unit, and is connected with the first air extractor arranged outside the first ultrasonic drying unit and the first control panel.

[0016] The first toluene gas detector is used to detect the amount of evaporated toluene in the first ultrasonic drying unit, and the high-temperature toluene vapor discharged can be recycled in the production process of the superfine fiber base cloth.

[0017] Further preferably, the second infrared drying unit further comprises a second temperature controller and a second control panel; the second temperature controller is arranged at the bottom of the second infrared drying unit, and is connected with the second control panel arranged outside the second infrared drying unit.

[0018] Further preferably, the second infrared drying unit further comprises a second air outlet, a second air extractor and a second toluene gas detector; the second air outlet is arranged at the top of the second infrared drying unit, and is connected with the second air extractor and the second toluene gas detector arranged outside the second infrared drying unit in sequence.

[0019] Further preferably, the outlet of the second air extractor is provided with a discharge pipe and a return pipe; the discharge pipe is connected with the second toluene gas detector; the return pipe is connected with the inside of the first ultrasonic drying unit, and a control valve is arranged on the return pipe.

[0020] The second toluene gas detector connected with the discharge pipe is used to monitor the toluene concentration, and the toluene vapor discharged from the discharge pipe is recycled by condensation. The return pipe is provided with a control valve for controlling the amount of backflowing hot air, and the hot air in the return pipe flows back to the inlet of the first ultrasonic drying unit, reducing the heating of the inhaled cold air and saving energy consumption.

[0021] Further preferably, the device further comprises a first deflection wheel and a second deflection wheel, and the first deflection wheel is arranged at the conveying outlet of the first ultrasonic drying unit, and the second deflection wheel is arranged at the conveying inlet of the second infrared drying unit.

[0022] Further preferably, the device further comprises an inlet deflection wheel and an outlet deflection wheel, and the inlet deflection wheel is arranged at the conveying inlet of the first ultrasonic drying unit, and the outlet deflection wheel is arranged at the conveying outlet of the second infrared drying unit.

[0023] Further preferably, the device further comprises a winding machine arranged at the conveying outlet of the second infrared drying unit.

[0024] Compared with the prior art, the device has the following advantages:

[0025] (1) The first ultrasonic drying unit generates high-frequency vibration under the action of high-frequency current through the ultrasonic wave generating platform, and uses ultrasonic resonance to quickly deliver energy to toluene in the internal gap of the superfine fiber base cloth, promotes the movement and overflow of toluene in the internal gap, and realizes uniform and rapid removal of most toluene in the superfine fiber base cloth.

[0026] (2) The second infrared drying unit is installed with an infrared lamp tube assembly at the bottom for heating the superfine fiber base cloth with low toluene content, and the number of deflection wheels is adjusted inside to adjust the number of folds of the superfine fiber base cloth, which is beneficial to improve the space utilization and drying efficiency.

[0027] (3) The hot air generated by the second infrared drying unit is returned to the inlet of the first ultrasonic drying unit through the return pipe, which can reduce the heating of the inhaled cold air and save energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a sectional view of a toluene drying device for fixed island superfine fiber base cloth in the utility model;

[0029] Figure 2 is a front view of a toluene drying device for fixed island superfine fiber base cloth in the utility model;

[0030] Figure 3 is a top view of an ultrasonic wave generating platform in the utility model.

[0031] The attached figures are labeled as follows: First ultrasonic drying unit 1, Second infrared drying unit 2, Inlet steering wheel 3-1, First steering wheel 3-2, Second steering wheel 3-3, Steering wheel I 3-4, Steering wheel II 3-5, Outlet steering wheel 3-6, Retractable steering wheel I 4-1, Retractable steering wheel II 4-2, First toluene gas detector 5-1, Second toluene gas detector 5-2, Insulation partition 6, Ultrasonic generating platform 7, First temperature sensor 8-1, Second temperature sensor 8-2, First air outlet 9-1, First exhaust fan 9-2, Second air outlet 9-3, Second exhaust fan 9-4, Infrared lamp assembly 10, Winding machine 11, Reflector 12, Control valve 13, First control panel 14, Second control panel 15, Oscillator 16. Detailed Implementation

[0032] The following examples further illustrate the above-described content of the present invention, but it should not be construed as limiting the scope of the subject matter of the present invention to the following examples. All technologies implemented based on the above-described content of the present invention fall within the scope of the present invention.

[0033] Example 1

[0034] like Figure 1 As shown, the toluene drying device for islanded microfiber base fabric includes a first ultrasonic drying unit 1, a heat insulation partition 6, and a second infrared drying unit 2. The second infrared drying unit 2 is located above the first ultrasonic drying unit 1, and the heat insulation partition 6 is used to separate the first ultrasonic drying unit 1 and the second infrared drying unit 2 and maintain different temperatures for the two drying units.

[0035] The island-shaped microfiber base fabric enters the first ultrasonic drying unit 1 through the inlet guide wheel 3-1 located at the conveying inlet of the first ultrasonic drying unit 1. Inside the first ultrasonic drying unit 1, along the conveying direction of the island-shaped microfiber base fabric, there are sequentially arranged retractable guide wheel I 4-1, ultrasonic generating platform 7, retractable guide wheel II 4-2, and first guide wheel 3-2. The ultrasonic generating platform 7 is located at the bottom of the first ultrasonic drying unit 1. The retractable guide wheels I 4-1 and II 4-2 are located on the front and rear sides of the ultrasonic generating platform 7 and can extend and retract vertically to adjust the degree of adhesion between the microfiber base fabric and the ultrasonic generating platform 7. The first ultrasonic drying unit 1 also includes a reflector plate 12 located on its top inner side to reflect ultrasonic waves to the upper surface of the microfiber base fabric, reducing ultrasonic wave loss and improving heating and drying efficiency.

[0036] The bottom of the first ultrasonic drying unit 1 is provided with a first toluene gas detector 5-1 and a first temperature sensor 8-1, and the top right side is provided with a first air outlet 9-1 and a first air extractor 9-2 connected with the first air outlet 9-1. Among them, the ultrasonic wave generating platform 7 and the first temperature sensor 8-1 are electrically connected with the first control panel 14 arranged outside the first ultrasonic drying unit 1, for regulating the ultrasonic heating temperature. The first air extractor 9-2 is also arranged outside the first ultrasonic drying unit 1, as shown in Figure 2 , and the first toluene gas detector 5-1 and the first air extractor 9-2 are electrically connected with the first control panel 14, for monitoring the toluene concentration inside the first ultrasonic drying unit 1 and the evaporated toluene. The high-temperature toluene vapor discharged can be recycled in the production process of the ultra-fine fiber base cloth.

[0037] As shown in Figure 3 , a plurality of oscillators 16 are arranged on the ultrasonic wave generating platform 7 along the width direction of the fixed island ultra-fine fiber base cloth, and they are arranged in parallel along the conveying direction of the fixed island ultra-fine fiber base cloth. Two rows of parallel arranged oscillators 16 form a group, and the interval width between the groups arranged in parallel is arranged from dense to sparse along the conveying direction of the fixed island ultra-fine fiber base cloth, that is, it is distributed from left to right in turn. The distribution is sparse, for controlling the heating and drying temperature, and preventing the temperature of the passing ultra-fine fiber base cloth from being too high. The width of the ultrasonic wave generating platform 7 is 1.8-3.8m.

[0038] The fixed island ultra-fine fiber base cloth enters the second infrared drying unit 2 through the second turning wheel 3-3 arranged at the conveying entrance of the second infrared drying unit 2. In the second infrared drying unit 2, turning wheel I 3-4, turning wheel II 3-5, infrared lamp tube assembly 10, and outlet turning wheel 3-6 are arranged in sequence along the conveying direction of the fixed island ultra-fine fiber base cloth. Among them, the bottom of the second infrared drying unit 2 is provided with an infrared lamp tube assembly 10 for heating the ultra-fine fiber base cloth with low toluene content. The bottom of the second infrared drying unit 2 is also provided with a second temperature sensor 8-2, and the infrared lamp tube assembly 10 and the second temperature sensor 8-2 are electrically connected with the second control panel 15 arranged outside the second infrared drying unit 2.

[0039] In addition, the turning wheel I 3-4 and the turning wheel II 3-5 arranged inside the second infrared drying unit 2 cooperate with the second turning wheel 3-3 and the outlet turning wheel 3-6, for controlling the vertical distance between the ultra-fine fiber base cloth and the infrared lamp tube assembly 10, realizing the folding type forward movement of the ultra-fine fiber base cloth and the gradient temperature heating, fully utilizing the space of the drying unit, and preventing local high temperature. The number of turning wheels inside the infrared drying unit 2 is adjusted by superposition, which is beneficial to improve the space utilization rate and the drying efficiency.

[0040] The second infrared drying unit 2 has a second air outlet 9-3 at its top, which is connected to a second exhaust fan 9-4 located outside the second infrared drying unit 2. The exhaust fan 9-4 has an outlet pipe and a return pipe at its outlet. The outlet pipe is connected to a second toluene gas detector 5-2 for monitoring toluene concentration. The return pipe is connected to the first ultrasonic drying unit 1 and has a control valve 13 for controlling the amount of hot air returned. The hot air in the return pipe flows back to the inlet of the first ultrasonic drying unit 1, reducing the heating of the intake cold air and saving energy.

[0041] The toluene drying device also includes a winding machine 11, through which the island-mounted microfiber base fabric conveyed by the outlet steering wheel 3-6 is wound up.

[0042] The method of using this utility model is as follows: The islanded microfiber base fabric enters the first ultrasonic drying unit 1 through the inlet guide wheel 3-1 located at the conveying inlet of the first ultrasonic drying unit 1. Ultrasonic drying is achieved through the ultrasonic generating platform 7 and reflector plate 12 set inside the first ultrasonic drying unit 1. The ultrasonic resonance rapidly delivers energy to the toluene in the internal pores of the microfiber base fabric, promoting the overflow of toluene from the internal pores, thus uniformly and quickly removing most of the toluene from the microfiber base fabric. It is then conveyed to the second infrared drying unit 2 through the guide wheel. Inside the second infrared drying unit 2, through the arrangement of several guide wheels and the infrared lamp assembly 10 at its bottom, the microfiber base fabric achieves folding forward movement and gradient temperature heating drying, making full use of the drying unit space and preventing localized high temperatures. Finally, it is wound up by the winding machine 11 to obtain the toluene-dried microfiber base fabric. During this process, the device's internal temperature, toluene discharge, and other parameters are controlled via the control panel. It can also control the hot air recirculation, with the hot air in the recirculation pipe flowing back to the inlet of the first ultrasonic drying unit 1, reducing the heating of the intake cold air and saving energy.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A toluene drying apparatus for islanding a superfine fiber base cloth, characterized by, The device comprises a first ultrasonic drying unit (1), a heat preservation partition (6) and a second infrared drying unit (2); the second infrared drying unit (2) is located above the first ultrasonic drying unit (1) and is separated by the heat preservation partition (6); the island-shaped superfine fiber base cloth is conveyed by a plurality of turning wheels arranged in the device, and is conveyed from the first ultrasonic drying unit (1) to the second infrared drying unit (2); The bottom of the first ultrasonic drying unit (1) is provided with an ultrasonic wave generating platform (7); a plurality of oscillators (16) are arranged on the ultrasonic wave generating platform (7) along the width direction of the island-shaped superfine fiber base cloth, and the oscillators (16) are arranged in parallel along the conveying direction of the island-shaped superfine fiber base cloth, and the interval width of the parallel arrangement is arranged from dense to sparse along the conveying direction of the island-shaped superfine fiber base cloth; The bottom of the second infrared drying unit (2) is provided with an infrared lamp tube assembly (10), and a plurality of turning wheels are arranged above the infrared lamp tube assembly (10) along the height direction of the second infrared drying unit (2), and the island-shaped superfine fiber base cloth is conveyed in a folding manner from top to bottom through the turning wheels.

2. The toluene drying apparatus for islanding the superfine fiber base cloth according to claim 1, wherein, The first ultrasonic drying unit (1) is provided with a retractable turning wheel I (4-1) and a retractable turning wheel II (4-2) along the conveying direction of the island-shaped superfine fiber base cloth, and the retractable turning wheel I (4-1) and the retractable turning wheel II (4-2) are arranged on the front and back sides of the ultrasonic wave generating platform (7) respectively.

3. The toluene drying apparatus for islanding superfine fiber base cloth according to claim 1, wherein The first ultrasonic drying unit (1) further comprises a reflecting plate (12), a first temperature sensor (8-1) and a first control panel (14); the reflecting plate (12) is arranged at the top of the first ultrasonic drying unit (1); the first temperature sensor (8-1) is arranged at the bottom of the first ultrasonic drying unit (1), and the first temperature sensor (8-1) and the ultrasonic wave generating platform (7) are connected with the first control panel (14) arranged outside the first ultrasonic drying unit (1).

4. The toluene drying apparatus for islanding superfine fiber base cloth according to claim 1 or 2 or 3, wherein The first ultrasonic drying unit (1) further comprises a first toluene gas detector (5-1), a first air outlet (9-1) and a first air extractor (9-2); the first toluene gas detector (5-1) is arranged at the bottom of the first ultrasonic drying unit (1); the first air outlet (9-1) is arranged at the top of the first ultrasonic drying unit (1), and the first air outlet (9-1) and the first air extractor (9-2) arranged outside the first ultrasonic drying unit (1) are connected with the first control panel (14) together.

5. The toluene drying apparatus for islanding superfine fiber base cloth according to claim 1, wherein The second infrared drying unit (2) further comprises a second temperature controller (8-2) and a second control panel (15); the second temperature controller (8-2) is arranged at the bottom of the second infrared drying unit (2), and the second temperature controller (8-2) is connected with the second control panel (15) arranged outside the second infrared drying unit (2).

6. The toluene drying apparatus for islanding superfine fiber base cloth according to claim 1 or 4, wherein The second infrared drying unit (2) further comprises a second air outlet (9-3), a second air extractor (9-4) and a second toluene gas detector (5-2); the second air outlet (9-3) is arranged at the top of the second infrared drying unit (2), and the second air outlet (9-3), the second air extractor (9-4) and the second toluene gas detector (5-2) arranged outside the second infrared drying unit (2) are connected in sequence.

7. The toluene drying apparatus for islanding the superfine fiber base cloth according to claim 6, wherein The outlet of the second air extractor (9-4) is provided with an exhaust pipe and a return pipe; the exhaust pipe is connected with a second toluene gas detector (5-2); the return pipe is connected with the interior of the first ultrasonic drying unit (1), and the return pipe is provided with a control valve (13).

8. The toluene drying apparatus for islanding superfine fiber base cloth according to claim 1, wherein The device further comprises a first turning wheel (3-2) and a second turning wheel (3-3), wherein the first turning wheel (3-2) is arranged at the conveying outlet of the first ultrasonic drying unit (1), and the second turning wheel (3-3) is arranged at the conveying inlet of the second infrared drying unit (2).

9. The toluene drying apparatus for islanding superfine fiber base cloth according to claim 1 or 8, wherein The device further comprises an inlet turning wheel (3-1) and an outlet turning wheel (3-6), wherein the inlet turning wheel (3-1) is arranged at the conveying inlet of the first ultrasonic drying unit (1), and the outlet turning wheel (3-6) is arranged at the conveying outlet of the second infrared drying unit (2).

10. The toluene drying apparatus for islanding superfine fiber base cloth according to claim 1, wherein The device further comprises a winding machine (11) arranged at the conveying outlet of the second infrared drying unit (2).

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