Low-energy-consumption non-woven fabric drying device

Abstract

The utility model relates to the technical field of non-woven fabric drying equipment, in particular to a low-energy-consumption non-woven fabric drying device which comprises a drying unit, air inlet pipes, an exhaust pipe and an induced draft fan. The opening end of the air inducing pipe extends to the position above the center position of the cloth outlet end of the drying unit, the opening end of the air inducing pipe is connected with a flow equalizing component, and the flow equalizing component is arranged parallel to the cloth outlet direction, so that a cooling gap used for cold air flowing is formed between the flow equalizing component and the non-woven fabric; cold air above the cloth outlet end of the drying unit converges towards the opening end of the air inducing pipe and flows along the cooling gap, the flowing cold air makes contact with the non-woven fabric to cool the high-temperature non-woven fabric, meanwhile, the cold air exchanges heat with the high-temperature non-woven fabric, the effect of preheating the cold air is achieved, and the energy consumption needed by the drying machine for heating the cold air is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of non-woven fabric drying equipment, in particular to a low-energy consumption non-woven fabric drying device. Background Art

[0002] Spunlace nonwoven fabric is made by spraying high-pressure fine water flow onto one or more layers of fiber webs, so that the fibers are entangled with each other, so that the fiber web is reinforced and has a certain strength. The resulting fabric is spunlace nonwoven fabric, and the spunlace nonwoven fabric needs to be dried using drying equipment to reach a certain degree of dryness, and then the dried nonwoven fabric is rolled up for subsequent storage, transportation, and processing;

[0003] After the non-woven fabric is dried by the drying equipment, its own temperature is relatively high. The raw materials of non-woven fabrics are mostly plastic chemical fiber materials such as polyester fiber, acetate fiber, polypropylene fiber, polyamide fiber, etc. The thermal expansion and contraction coefficient of plastic materials is relatively large. Under high temperature conditions, the fibers of the non-woven fabric expand. If it is directly rolled up, the diameter of the rolled non-woven fabric is larger than that at normal temperature. As the non-woven fabric cools down, the fibers of the non-woven fabric shrink, and the gap between the rolled layers increases, which can easily cause the rolled non-woven fabric to loosen, which is not conducive to later storage and transportation. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the first aspect of the utility model proposes a low-energy consumption non-woven fabric drying device, comprising:

[0005] A drying unit, comprising a plurality of drying machines connected in series, wherein the top of the drying unit is provided with air inlet pipes and exhaust pipes corresponding to the plurality of drying machines;

[0006] The air inlet pipe is provided with an induced draft fan for inducing air;

[0007] The drying unit is provided with an air duct, a plurality of air inlet pipes are connected in parallel to the air duct, one end of the air duct is provided with an opening for the plurality of air inlet pipes to centrally draw air, the open end of the air duct extends to above the center of the cloth outlet end of the drying unit, and when the air inlet pipe draws air, an air flow capable of cooling the non-woven fabric is formed above the cloth outlet end of the drying unit;

[0008] The open end of the air duct is connected with a flow balancing component, and the flow balancing component is arranged parallel to the cloth outlet direction, so that a cooling gap for cold air to flow is formed between the flow balancing component and the non-woven fabric.

[0009] Preferably, the flow balancing component is configured as a rectangular flat plate structure, and the length of the flow balancing component is greater than the length of the cloth outlet end of the drying unit, and the width of the flow balancing component is 0.8-1.0m.

[0010] Preferably, the flow equalizing component is made of a transparent acrylic plate.

[0011] Preferably, the drying unit is provided with an exhaust duct, a plurality of the exhaust ducts are connected in parallel to the exhaust duct, and an opening is provided at one end of the exhaust duct for centralized exhaust of the plurality of exhaust ducts.

[0012] Preferably, the air duct and the air exhaust duct are both rectangular air ducts.

[0013] Preferably, a heat exchanger is provided on the drying unit, and the air induced duct and the air exhaust duct are respectively connected to two heat exchange channels of the heat exchanger.

[0014] Preferably, the heat exchanger comprises an air-to-air plate heat exchanger.

[0015] Preferably, the induced draft fan comprises a centrifugal fan.

[0016] Preferably, an ion wind module is provided below the cloth outlet end of the drying unit, and the output end of the ion wind module is located directly below the opening end of the air duct, for outputting ion wind to the non-woven fabric to remove static electricity.

[0017] Preferably, the ion wind module comprises an electrically connected ion wind rod and an ion generator, and the ion wind rod is arranged in a direction parallel to the cloth outlet end of the drying unit.

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

[0019] 1. An air duct is provided and multiple air inlet ducts are connected in parallel to the air duct so that the open end of the air duct has a larger air inlet flow. The open end of the air duct is then extended to the upper part of the center of the cloth outlet end of the drying unit so that the cold air above the cloth outlet end of the drying unit is gathered to the open end of the air duct. A flow equalizing component is provided so that a cooling gap parallel to the non-woven fabric is formed between the flow equalizing component and the non-woven fabric. In the process of cold air flow and convergence, the flowing cold air is fully in contact with the non-woven fabric, so as to cool down the high-temperature non-woven fabric outputted through the cloth outlet end. At the same time, the cold air and the high-temperature non-woven fabric generate heat exchange, which plays a role in preheating the cold air and reduces the energy consumption required for the dryer to heat the cold air.

[0020] 2. An ion wind module is set below the cloth outlet of the drying unit to output ion wind to the non-woven fabric to remove static electricity. At the same time, the ion wind below the non-woven fabric is sucked upward by utilizing the air intake at the open end of the induced draft duct. The ion wind can fully contact the non-woven fabric to improve the static electricity removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a structural schematic diagram of a low-energy nonwoven fabric drying device shown in the utility model;

[0023] Figure 2 It is a top view of the low-energy nonwoven fabric drying device shown in the utility model;

[0024] Figure 3 It is a schematic diagram of the flow of cold air in the low-energy non-woven fabric drying device shown in the utility model.

[0025] In the figure, 1. drying unit; 11. air inlet pipe; 12. exhaust pipe; 2. induced draft fan; 3. induced draft pipe; 31. flow equalizing component; 4. exhaust pipe; 5. heat exchanger; 6. ion wind rod; 7. ion generator. DETAILED DESCRIPTION

[0026] In order to better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0027] Combination Figure 1-Figure 3 As shown, the utility model provides a low-energy consumption non-woven fabric drying device, comprising a drying unit 1, an induced draft fan 2 and an induced draft duct 3

[0028] The drying unit 1 includes a plurality of dryers connected in series. An air inlet pipe 11 and an exhaust pipe 12 corresponding to the plurality of dryers are arranged on the top of the drying unit 1. An induced draft fan 2 for inducing air is installed on the air inlet pipe 11. The induced draft fan 2 is used to transport external dry airflow into the dryer through the air inlet pipe 11. After being heated inside the dryer, the airflow is blown onto the surface of the non-woven fabric to dry the non-woven fabric. The high-temperature airflow carrying water vapor inside the dryer is discharged through the exhaust pipe 12.

[0029] In a preferred embodiment, the induced draft fan 2 comprises a centrifugal fan, which has a good exhaust effect and can meet the large air volume requirement of the dryer.

[0030] The temperature of the non-woven fabric after being dried by high-temperature airflow is relatively high. Under high temperature conditions, the plastic fibers of the non-woven fabric expand. If it is rolled up directly, the diameter of the rolled non-woven fabric will be larger than that at room temperature. As the non-woven fabric cools down, the fibers of the non-woven fabric shrink and the gap between the rolled layers increases, which can easily cause the rolled non-woven fabric to loosen, which is not conducive to later storage and transportation.

[0031] Combination Figure 1 , Figure 2 and Figure 3 As shown, the drying unit 1 is provided with an induced draft duct 3, and a plurality of air intake ducts 11 are connected in parallel to the induced draft duct 3. An opening is provided at one end of the induced draft duct 3 for centralized air extraction by the plurality of air intake ducts 11. The plurality of air intake ducts 11 of the drying unit 1 are centralized air extracted by the induced draft duct 3, so that the open end of the induced draft duct 3 has a larger air intake flow.

[0032] In a specific embodiment, the open end of the induced draft duct 3 extends to above the center position of the cloth outlet end of the drying unit 1. When the induced draft fans 2 on the multiple air inlet pipes 11 draw air, a larger air inlet flow is formed at the open end of the induced draft duct 3, so that the cold air above the cloth outlet end of the drying unit 1 converges to the open end of the induced draft duct 3. In the process of cold air flow and convergence, the high-temperature non-woven fabric output through the cloth outlet end is cooled and cooled. At the same time, the cold air and the high-temperature non-woven fabric produce heat exchange, which plays a role in preheating the cold air and reduces the energy consumption required for the dryer to heat the cold air.

[0033] Furthermore, the open end of the air duct 3 is connected to a flow equalizing component 31, so that when the cold air converges to the open end of the air duct 3, it is restricted to flow in the gap between the flow equalizing component 31 and the non-woven fabric, thereby increasing the contact area between the cold air and the non-woven fabric and improving the cooling effect.

[0034] In a preferred embodiment, the flow equalizing component 31 is configured as a rectangular flat plate structure, and the flow equalizing component 31 is arranged parallel to the cloth outlet direction, so that a cooling gap parallel to the non-woven fabric is formed between the flow equalizing component 31 and the non-woven fabric, so that the flowing cold air can fully contact the non-woven fabric, thereby improving the cooling effect.

[0035] Furthermore, the length of the flow equalizing component 31 is greater than the length of the cloth outlet end of the drying unit 1, and the width of the flow equalizing component 31 is 0.8-1.0m, so that the flow equalizing component 31 can fully cover the width of the non-woven fabric, so that a larger cooling gap is formed between the flow equalizing component 31 and the non-woven fabric for the flow of cold air.

[0036] In an optional embodiment, the flow balancing component 31 is made of a transparent acrylic plate, which is light in texture and makes it easy for personnel to observe the state of the non-woven fabric under the flow balancing component 31 .

[0037] Combination Figure 1 and Figure 2 As shown, the drying unit 1 is provided with an exhaust duct 4, and a plurality of exhaust pipes 12 are connected in parallel to the exhaust duct 4. An opening is provided at one end of the exhaust duct 4 for centralized exhaust of the plurality of exhaust pipes 12, so that the plurality of exhaust pipes 12 are centralizedly exhausted through the exhaust duct 4, which is convenient for pipeline arrangement in the workshop during installation.

[0038] Furthermore, a heat exchanger 5 is provided on the drying unit 1, and the induced draft duct 3 and the exhaust duct 4 are respectively connected to two heat exchange channels of the heat exchanger 5. The high-temperature exhaust gas discharged from the exhaust duct 4 exchanges heat with the cold air introduced by the induced draft duct 3, and the high-temperature exhaust gas is used to preheat the cold air, thereby reducing the energy consumption required for the dryer to heat the cold air.

[0039] In a preferred embodiment, the heat exchanger 5 comprises an air-to-air plate heat exchanger.

[0040] In an optional embodiment, both the induced air duct 3 and the exhaust air duct 4 are rectangular air ducts. Compared with circular air ducts, rectangular air ducts have higher air transfer efficiency and pressure bearing capacity.

[0041] Since the raw material of non-woven fabrics is plastic fiber, it is easy to generate static electricity during the manufacturing process of non-woven fabrics. Especially in the process of drying non-woven fabrics, the water on the surface of non-woven fabrics evaporates quickly, resulting in the accumulation of surface charge, which then rubs against the circular screen, cloth roller and other components inside the dryer, increasing the possibility of static electricity generation.

[0042] Combine 1 and Figure 3 As shown, an ion wind module is provided below the cloth outlet end of the drying unit 1, and the output end of the ion wind module is located directly below the opening end of the air duct 3, for outputting ion wind to the non-woven fabric to remove static electricity. At the same time, the inlet air flow at the opening end of the air duct 3 is utilized to draw the ion wind below the non-woven fabric upward, so that the ion wind can fully contact the non-woven fabric to improve the static electricity removal effect.

[0043] In a specific embodiment, the ion wind module includes an electrically connected ion wind rod 6 and an ion generator 7, and the ion wind rod 6 is arranged in a direction parallel to the cloth outlet end of the drying unit 1, so that the ion wind output by the ion wind rod 6 can cover the width of the non-woven fabric.

[0044] In combination with the above embodiments, an air duct 3 is provided, and a plurality of air inlet pipes 11 are connected in parallel to the air duct 3, so that the open end of the air duct 3 has a larger air inlet flow, and then the open end of the air duct 3 is extended to above the center position of the cloth outlet end of the drying unit 1, so that the cold air above the cloth outlet end of the drying unit 1 is gathered to the open end of the air duct 3, and a flow equalizing component 31 is provided, so that a cooling gap parallel to the non-woven fabric is formed between the flow equalizing component 31 and the non-woven fabric, and in the process of the cold air flow and convergence, the flowing cold air is fully in contact with the non-woven fabric, and the high-temperature non-woven fabric outputted through the cloth outlet is cooled and lowered, and at the same time, the cold air and the high-temperature non-woven fabric generate heat exchange, which plays a role in preheating the cold air, thereby reducing the energy consumption required for the dryer to heat the cold air;

[0045] An ion wind module is arranged below the cloth outlet end of the drying unit 1 to output ion wind to the non-woven fabric to remove static electricity. At the same time, the ion wind below the non-woven fabric is sucked upward by utilizing the inlet air flow at the open end of the air duct 3. The ion wind can fully contact the non-woven fabric to improve the static electricity removal effect.

[0046] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A low-energy nonwoven fabric drying device, characterized in that: include: A drying machine group (1) comprises a plurality of drying machines connected in series, wherein the top of the drying machine group (1) is provided with air inlet pipes (11) and exhaust pipes (12) corresponding to the plurality of drying machines; The air inlet pipe (11) is provided with an induced draft fan (2) for inducing air; The drying unit (1) is provided with an air duct (3), a plurality of air inlet pipes (11) are connected in parallel to the air duct (3), one end of the air duct (3) is provided with an opening for centralized air extraction by the plurality of air inlet pipes (11), the open end of the air duct (3) extends to above the center position of the cloth outlet end of the drying unit (1), and when the air inlet pipe (11) is evacuated, an air flow capable of cooling the non-woven fabric is formed above the cloth outlet end of the drying unit (1); The open end of the air duct (3) is connected to a flow equalizing component (31), and the flow equalizing component (31) is arranged parallel to the cloth outlet direction, so that a cooling gap for cold air to flow is formed between the flow equalizing component (31) and the non-woven fabric.

2. The low-energy nonwoven fabric drying device according to claim 1, characterized in that: The flow balancing component (31) is configured as a rectangular flat plate structure, and the length of the flow balancing component (31) is greater than the length of the cloth outlet end of the drying unit (1), and the width of the flow balancing component (31) is 0.8-1.0 m.

3. The low-energy nonwoven fabric drying device according to claim 1, characterized in that: The flow equalizing component (31) is made of a transparent acrylic plate.

4. The low-energy nonwoven fabric drying device according to claim 1, characterized in that: The drying unit (1) is provided with an exhaust pipe (4), a plurality of exhaust pipes (12) are connected in parallel to the exhaust pipe (4), and one end of the exhaust pipe (4) is provided with an opening for centralized exhaust of the plurality of exhaust pipes (12).

5. The low-energy nonwoven fabric drying device according to claim 4, characterized in that: The air duct (3) and the air exhaust duct (4) are both rectangular air ducts.

6. The low-energy nonwoven fabric drying device according to claim 4, characterized in that: The drying unit (1) is provided with a heat exchanger (5), and the air induced pipe (3) and the air exhaust pipe (4) are respectively connected to two heat exchange channels of the heat exchanger (5).

7. The low-energy nonwoven fabric drying device according to claim 6, characterized in that: The heat exchanger (5) comprises an air-to-air plate heat exchanger.

8. The low-energy nonwoven fabric drying device according to claim 1, characterized in that: The induced draft fan (2) comprises a centrifugal fan.

9. The low-energy nonwoven fabric drying device according to claim 1, characterized in that: An ion wind module is provided below the cloth outlet end of the drying unit (1), and the output end of the ion wind module is located directly below the opening end of the air duct (3), and is used to output ion wind to the non-woven fabric to remove static electricity.

10. The low-energy nonwoven fabric drying device according to claim 9, characterized in that: The ion wind module comprises an ion wind rod (6) and an ion generator (7) which are electrically connected, and the ion wind rod (6) is arranged in a direction parallel to the cloth outlet end of the drying unit (1).

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