Constant-temperature drying device and spunlace non-woven fabric production line

Abstract

The invention relates to a constant-temperature drying device and a spunlace non-woven fabric production line, and relates to the field of non-woven fabric drying, the constant-temperature drying device comprises a box body, two vibration mechanisms, a first hot air assembly and a second hot air assembly, a partition plate is arranged in the box body, and the partition plate divides an inner cavity of the box body into a first cavity and a second cavity; the first hot air assembly is arranged at the top of the first cavity and blows hot air downwards, the second hot air assembly is arranged at the bottom of the second cavity and blows hot air upwards, a drainage pipe is arranged at the bottom of the first cavity, and an exhaust pipe is arranged at the top of the second cavity. The two vibration mechanisms are located in the first cavity and the second cavity respectively, each vibration mechanism comprises a vibration net and a vibration generation assembly, the vibration net of the first cavity is located above the non-woven fabric, and the vibration net of the second cavity is located below the non-woven fabric; the vibration generating assembly is used for enabling the vibration net to vibrate, and vibration force of the vibration net is transmitted to the non-woven fabric. The non-woven fabric drying device can improve the non-woven fabric drying effect.

Description

Technical Field

[0001] The present application relates to the field of non-woven fabric drying technology, and in particular to a constant temperature drying device and a spunlace non-woven fabric production line. Background Art

[0002] The spunlace nonwoven production line is a continuous production system that uses a high-pressure spunlace process to entangle and reinforce fibers into cloth. The spunlace nonwoven production line includes a fiber forming device, a fiber pretreatment device, a web forming device, a spunlace reinforcement device, a constant temperature drying device, and a slitting and winding device.

[0003] The constant temperature drying device includes a box and a hot air component. The non-woven fabric is transported horizontally through the box, and the hot air component blows hot air downward to dry the non-woven fabric. At the same time, a temperature sensor is also provided in the box to detect the temperature inside the box, so as to adjust the hot air temperature of the hot air component to ensure that the drying temperature is stable within a certain range.

[0004] When the water content of the spunlace non-woven fabric is high, in order to ensure the drying effect, the conveying speed of the non-woven fabric needs to be reduced to extend the drying time of the non-woven fabric in the box. However, the reduction in the conveying speed of the non-woven fabric will affect the production efficiency of its upstream and downstream devices. Summary of the Invention

[0005] In order to improve the drying effect of non-woven fabrics, the present application provides a constant temperature drying device and a spunlace non-woven fabric production line.

[0006] This application provides a constant temperature drying device, which adopts the following technical solution: A constant temperature drying device comprises a box body, two vibration mechanisms, a first hot air component and a second hot air component, wherein a feed port and a discharge port are respectively provided on both sides of the box body, and the feed port and the discharge port are respectively provided with two feed rollers and two discharge rollers; a partition is provided in the box body, which divides the inner cavity of the box body into a first chamber and a second chamber, the partition is provided with a through hole for horizontal passage of non-woven fabric and a transfer air duct connected between the lower half of the first chamber and the lower half of the second chamber, the first hot air component is provided at the top of the first chamber and blows hot air downward, the second hot air component is provided at the bottom of the second chamber and blows hot air upward, a drain pipe is provided at the bottom of the first chamber, and an exhaust pipe is provided at the top of the second chamber; the two vibration mechanisms are respectively located in the first chamber and the second chamber, the vibration mechanism includes a vibration net and a vibration generating component, the vibration net of the first chamber is located above the non-woven fabric, and the vibration net of the second chamber is located below the non-woven fabric; the vibration generating component is used to vibrate the vibration net, and the vibration force of the vibration net is transmitted to the non-woven fabric.

[0007] By adopting the above technical solution, driven by the feed roller and the discharge roller, the non-woven fabric is transported horizontally in the box and passes through the first chamber and the second chamber in sequence. When the non-woven fabric is in the first chamber, the vibration generating component drives the vibration net to vibrate, and the vibration force of the vibration net is transmitted downward to the non-woven fabric. The vibration force can effectively destroy the adhesion between the non-woven fabric fibers and water, and promote the water to separate from the fiber structure. Secondly, the vibration also shatters the water film on the surface of the non-woven fabric. Combined with the hot air blown downward by the first hot air component, the hot air passes through the tiny holes on the non-woven fabric. The hot air carries the large water droplets into the first chamber and accumulates at the bottom of the first chamber, and is discharged from the drain pipe. The downward-flowing hot air enters the second chamber through the transfer air duct. The hot air merges with the hot air blown upward by the second hot air component and blows upward onto the non-woven fabric. The vibration force of the vibrating net in the second chamber is transmitted upward to the non-woven fabric, which breaks the water film on the surface of the non-woven fabric. The merged hot air passes through the tiny holes on the non-woven fabric and carries away the small water droplets from the surface of the non-woven fabric, and is finally discharged from the exhaust pipe.

[0008] In summary, by setting up two chambers and two vibration mechanisms, it is possible to achieve segmented vibration of the non-woven fabric to shake out small water droplets and large water droplets respectively. It can also destroy the adhesion between the non-woven fabric fibers and water, and promote water to separate from the fiber structure, that is, increase the dehydration effect, and then cooperate with the converging flow of hot air to increase the utilization rate of hot air and further increase the drying effect, that is, the dehydration effect and drying effect are both improved, greatly improving the drying efficiency, thereby indirectly improving the conveying efficiency and production efficiency of the non-woven fabric.

[0009] Optionally, the vibration net includes two connecting strips and multiple cross-arranged vibration threads, the two connecting strips are respectively located on both sides of the width direction of the non-woven fabric, the connecting strips are connected to the box body through a first spring, and the two ends of the vibration thread are respectively fixed to the two connecting strips.

[0010] Optionally, the vibration net includes two connecting strips and multiple vibrating threads, the two connecting strips are respectively located on both sides of the width direction of the non-woven fabric, the connecting strips are connected to the box body through a first spring, the two ends of the vibrating thread are respectively fixed to the two connecting strips, the vibrating threads are at the same height, and the length direction of each vibrating thread is the width direction of the non-woven fabric.

[0011] Optionally, the vibration net includes two connecting strips and multiple vibrating threads, the two connecting strips are respectively located on both sides of the width direction of the non-woven fabric, the connecting strips are connected to the box body through a first spring, the two ends of the vibrating thread are respectively fixed to the two connecting strips, and each vibrating thread is at the same height, wherein the length direction of at least one vibrating thread is the width direction of the non-woven fabric, and the length direction of the remaining vibrating threads has an angle with the width direction of the non-woven fabric.

[0012] Optionally, the box body is fixed with a vertically arranged guide rod, and both ends of the connecting bar are penetrated by guide holes for the guide rod to pass through, the first spring is sleeved on the guide rod, and the vibration generating component includes a vibration motor, which is installed on the connecting bar.

[0013] By adopting the above technical solution, the connecting strip is limited to vertical displacement through the cooperation of the guide rod and the guide hole, and the direction of the exciting force of the vibration motor can also be limited to ensure that the connecting strip can perform high-frequency vertical vibration, so that the vibration force of the vibration net can be more efficiently transmitted to the non-woven fabric.

[0014] Optionally, a plurality of self-vibrating components are provided in the box, each of which corresponds to each vibrating wire one by one, and the self-vibrating component is used to drive the corresponding vibrating wire to vibrate in the vertical direction, and the vibration triggering timing of two adjacent vibrating wires is the same or different.

[0015] By adopting the above technical solution, under the premise of the overall vibration of the original vibration net, each vibrating thread is made to vibrate independently through the self-vibrating component, that is, the vibration frequency of the vibrating thread is greatly increased, and the high-frequency vibration transfers the energy through more concentrated kinetic energy, effectively acting on the bound water between the non-woven fabric fibers, and effectively destroying the adhesion between the non-woven fabric fibers and water through tiny and intensive impact force, prompting the moisture to separate from the fiber structure, and also causing the moisture to migrate from the inside of the fiber to the surface, forming a thinner liquid film, increasing the contact area between the hot air and water, and improving the evaporation rate; in addition, the high-frequency vibration disturbs the air layer on the surface of the non-woven fabric, reduces the thickness of the thermal boundary layer, and improves the heat and mass transfer efficiency of the hot air to the water.

[0016] Optionally, the vibrating wire is a combination of one or more of steel wire, fish wire and rubber wire, and the self-vibrating component includes a lifting cylinder, a C-shaped frame, two paddles and a second spring, the separated ends of the two paddles are hingedly connected to the opposite side walls of the C-shaped frame respectively, and the lower side of the free end of the paddle is fixedly connected to the C-shaped frame through an inclined second spring, and the elastic force of the second spring is used to keep the paddle in a horizontal state and the free ends of the two paddles abut against each other; the lifting cylinder is used to drive the C-shaped frame to rise and fall, so that the free ends of the paddles contact the vibrating wire.

[0017] By adopting the above technical solution, in the process of the lifting cylinder driving the C-shaped frame to rise, the free end of the paddle initially contacts the bottom of the vibrating wire. At this time, the elastic force of the second spring is greater than the tension of the vibrating wire, the paddle position does not move, and the paddle drives the vibrating wire to elastically deform upward, the tension of the vibrating wire increases, and the lifting cylinder continues to drive the C-shaped frame to rise. When the tension of the vibrating wire is greater than the elastic force of the second spring, the vibrating wire does not move, the free end of the paddle deflects downward, and the second spring is compressed. At this time, the paddle avoids the vibrating wire and is located above the vibrating wire. The second spring restores its deformation to restore the paddle to a horizontal state, and the vibrating wire begins to vibrate at a high frequency until the vibrating wire consumes kinetic energy, and then the lifting cylinder is pressed. Then drive the free end of the pick to contact the top of the vibrating wire. At this time, the elastic force of the second spring is greater than the tension of the vibrating wire, the position of the pick does not move, and the pick drives the vibrating wire to elastically deform downward, the tension of the vibrating wire increases, and the lifting cylinder continues to drive the U-shaped frame to descend. When the tension of the vibrating wire is greater than the elastic force of the second spring, the vibrating wire does not move, the free end of the pick deflects upward, and the second spring stretches. At this time, the pick avoids the vibrating wire and is located below the vibrating wire. The second spring restores its deformation to restore the pick to a horizontal state, and the vibrating wire starts to vibrate at high frequency until the vibrating wire consumes kinetic energy. In this way, two high-frequency vibrations of the vibrating wire can be achieved in one lift, and the vibration application efficiency is high.

[0018] Optionally, the vibration triggering timing of two adjacent vibrating threads is the same, and the vibrating threads are fish threads or rubber threads; the connecting strip has an air inlet cavity, and the vibrating threads are hollow structures with through holes, which are connected to the air inlet cavity; the box body is provided with an air delivery component, which is used to deliver air into the air inlet cavity, forming positive pressure in the through holes, causing the vibrating threads to expand radially.

[0019] By adopting the above technical solution, when the self-vibrating component drives the vibrating wire to vibrate independently, the vibrating wire vibrates at a low frequency and a large amplitude to hit the non-woven fabric, and the non-woven fabric is continuously slightly deformed, making it easier for the internal moisture to diffuse to the surface. After the vibration amplitude and vibration frequency of the vibrating wire gradually decrease, the air supply component supplies air into the air inlet cavity, forming a positive pressure in the through hole, causing the vibrating wire to expand radially. Since the two ends of the vibrating wire are fixed, its axial length cannot be shortened. According to the Poisson effect (the tendency of radial expansion to be accompanied by axial shortening), the tension (T) of the vibrating wire increases significantly. According to the string vibration formula, The vibration frequency f is proportional to the tension T. Therefore, the increase in tension will directly increase the vibration frequency of the vibrating thread, that is, the vibrating thread changes from low-frequency and large-amplitude vibration to high-frequency and small-amplitude vibration. The number of times the non-woven fabric is hit per unit time increases, forming a more intensive mechanical impact. High-frequency vibration uses tiny and intensive impact force to more effectively destroy the adhesion between the non-woven fabric fibers and water, prompting moisture to separate from the fiber structure, making the water film on the surface of the non-woven fabric easier to separate from the non-woven fabric. In addition, high-frequency vibration disturbs the air layer on the surface of the non-woven fabric, reduces the thickness of the thermal boundary layer, and improves the heat and mass transfer efficiency of hot air to moisture.

[0020] Optionally, a portion of the surface of the vibrating thread facing the non-woven fabric is provided with a plurality of micropores spaced apart along its length, and the micropores are connected to the through holes.

[0021] By adopting the above technical solution, the high-pressure gas in the through-hole will be ejected from the micropores at high speed, directly acting on the surface of the non-woven fabric, impacting the adhesion interface between the non-woven fabric fibers and water, and accelerating the separation of moisture. Secondly, the air flow penetrates the surface of the non-woven fabric to reduce the capillary resistance of moisture between fibers, thereby utilizing the dual synergistic effect of vibration and airflow to destroy the continuity of the water film between fibers and reduce moisture back-seepage.

[0022] The present application provides a spunlace nonwoven production line, which adopts the following technical solutions: A spunlace nonwoven fabric production line comprises a constant temperature drying device.

[0023] In summary, this application includes at least one of the following beneficial technical effects: By setting up two chambers and two vibration mechanisms, it can realize segmented vibration of the non-woven fabric to shake out small water droplets and large water droplets respectively, and can also destroy the adhesion between the non-woven fabric fibers and water, prompting water to separate from the fiber structure, that is, to increase the dehydration effect, and then cooperate with the converging flow of hot air to increase the utilization rate of hot air, further increase the drying effect, that is, the dehydration effect and drying effect are both improved, greatly improving the drying efficiency, thereby indirectly improving the transportation efficiency and production efficiency of the non-woven fabric; The self-vibrating component greatly increases the vibration frequency of the vibrating thread. High-frequency vibration transfers kinetic energy in a more concentrated manner, effectively applying energy to the bound water between non-woven fibers. It also effectively destroys the adhesion between non-woven fibers and water through tiny and intensive impact forces, causing moisture to separate from the fiber structure and migrate from the inside of the fiber to the surface, forming a thinner liquid film. The contact area between hot air and water is increased, and the evaporation rate is improved. In addition, high-frequency vibration disturbs the air layer on the surface of the non-woven fabric, reducing the thickness of the thermal boundary layer and improving the heat and mass transfer efficiency of hot air to water. By setting up a hollow structure of vibrating wire and air transmission components, the vibrating wire changes from low-frequency and large-amplitude vibration to high-frequency and small-amplitude vibration, and the number of times the non-woven fabric is hit per unit time increases, forming a more intensive mechanical impact. The high-frequency vibration more effectively destroys the adhesion between the non-woven fabric fibers and water through tiny and intensive impact force, prompting moisture to separate from the fiber structure, making the water film on the surface of the non-woven fabric easier to separate from the non-woven fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a cross-sectional view of the constant temperature drying device of Example 1.

[0025] Figure 2 This is a partial cross-sectional view of the housing of Example 1.

[0026] Figure 3 This is a top view of the vibrating net of Example 1.

[0027] Figure 4 It is a partial cross-sectional view of the installation structure of the vibration wire and the connecting bar of Example 1.

[0028] Figure 5 This is a top view of the vibrating net of Example 2.

[0029] Figure 6 This is a top view of the vibrating net of Example 3.

[0030] Figure 7 It is a schematic diagram of the self-vibrating component of Example 4.

[0031] Figure 8 yes Figure 7 A partial enlarged view of point A in the middle.

[0032] Figure 9 It is a partial cross-sectional view of the fifth embodiment for illustrating the installation structure of the vibration wire and the connecting bar.

[0033] Figure 10 yes Figure 9 A partial enlarged view of point B in the middle.

[0034] Explanation of reference numerals: 1. housing; 10. non-woven fabric; 100. first chamber; 200. second chamber; 101. drain pipe; 102. first air inlet; 103. second air inlet; 104. exhaust pipe; 11. feed port; 12. discharge port; 13. feed roller; 14. discharge roller; 15. first hot air assembly; 16. second hot air assembly; 17. partition; 171. through hole; 172. transfer air duct; 20. air inlet cavity; 21. Connecting strip; 211, mounting hole; 212, clamping rod; 22, vibrating wire; 221, through hole; 222, branch section; 231, guide rod; 232, first spring; 233, guide hole; 25, vibrating motor; 26, baffle; 27, air pipe; 28, bolt; 281, air duct; 282, side air hole; 283, sealing gasket; 29, conical ring; 31, lifting cylinder; 32, bracket; 33, pick; 34, second spring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 -Attached Figure 10 This application is described in further detail.

[0036] Example 1, Example 1 discloses a constant temperature drying device, such as Figure 1 、 Figure 2 As shown ( Figure 1 The direction of the middle arrow is the direction of hot air movement), the constant temperature drying device includes a box body 1, two vibration mechanisms, a first hot air component 15 and a second hot air component 16, wherein a feed port 11 and a discharge port 12 are respectively provided on both sides of the box body 1, and the feed port 11 and the discharge port 12 are respectively provided with two feed rollers 13 and two discharge rollers 14, the two feed rollers 13 and the two discharge rollers 14 respectively clamp the two ends of the non-woven fabric 10, the two feed rollers 13 rotate synchronously, and the two discharge rollers 14 rotate synchronously, so that the non-woven fabric 10 is transported and moved in a horizontal state in the box body 1, and the non-woven fabric 10 is in the middle position in the height direction of the box body 1.

[0037] A partition 17 is fixed in the middle of the box body 1, and the partition 17 is arranged vertically. The partition 17 divides the inner cavity of the box body 1 into a first chamber 100 and a second chamber 200. The first chamber 100 and the second chamber 200 are arranged in sequence along the conveying direction of the non-woven fabric 10. The partition 17 is provided with a through hole 171, which is used for allowing the non-woven fabric 10 to enter the second chamber 200 from the first chamber 100. In addition, a plurality of transfer air ducts 172 are also provided in the lower half of the partition 17. The transfer air ducts 172 are located in the second chamber 200. The transfer air ducts 172 are arranged at intervals along the width direction of the box body 1, and the transfer air ducts 172 are connected to the lower half of the first chamber 100 and the lower half of the second chamber 200.

[0038] The top of the first chamber 100 is provided with a plurality of first air inlets 102. The first hot air assembly 15 is arranged at the top of the first chamber 100. The first hot air assembly 15 blows hot air downward through the first air inlets 102. The hot air passes through the tiny holes on the non-woven fabric 10 from top to bottom. A drain pipe 101 is provided at the bottom of the first chamber 100.

[0039] The bottom of the second chamber 200 is provided with a plurality of second air inlets 103. The second hot air assembly 16 is arranged at the bottom of the second chamber 200. The second hot air assembly 16 blows hot air upward through the second air inlets 103. The hot air passes through the tiny holes on the non-woven fabric 10 from bottom to top. And an exhaust duct 104 is provided at the top of the second chamber 200.

[0040] Moreover, the box body 1 can also be provided with a temperature sensor (not shown in the figure) to detect the temperature inside the box body 1, so as to adjust the hot air temperature of the first hot air assembly 15 and the second hot air assembly 16, and ensure that the hot air drying temperature is stable within a certain range.

[0041] Two vibration mechanisms are respectively located in the first chamber 100 and the second chamber 200. The vibration mechanism includes a vibrating mesh and a vibration generating component. The vibrating mesh in the first chamber 100 is located above the non-woven fabric 10, and the vibrating mesh in the second chamber 200 is located below the non-woven fabric 10. The vibration generating component is used to make the vibrating mesh vibrate, and the vibration force of the vibrating mesh is transmitted to the non-woven fabric 奇天cg学院10.

[0042] As Figure 2 、 Figure 3 shown, the vibrating mesh includes two connecting bars 21 and multiple vibrating wires 22 arranged crosswise. The two connecting bars 21 are respectively located on both sides of the non-woven fabric 1奇天cg学院0 in the width direction. The connecting bars 21 extend along the length direction of the non-woven fabric 10. There is a clearance space between the connecting bars 21 and the long side of the non-woven fabric 10. The cross-section of the connecting bar 21 is in the shape of a "凵", the two ends of the connecting bar 21 are closed, and the opening of the connecting bar 21 faces away from the non-woven fabric 10.

[0043] The box body 1 is fixed with a vertically arranged guide rod 231. Specifically, the upper end of the guide rod 231 in the first chamber 100 is fixed to the inner top wall of the box body 1, and the lower end of the guide rod 231 in the second chamber 200 is fixed to the inner bottom wall of the box body 1. One connecting bar 21 corresponds to two guide rods 231. Guide holes 233 for the guide rods 231 to pass through are penetrated at both ends of the connecting bar 21, so that the connecting bar 21 can slide vertically relative to the box body 1. Moreover, the connecting bar 21 is connected to the box body 1 through a first spring 232. The first spring 232 is sleeved on the guide rod 231, and both ends of the first spring 232 are fixedly connected to the connecting bar 21 and the box body 1 respectively, making the connecting bar 21 elastically and movably connected to the box body 1.

[0044] The vibrating wire 22 is a combination of one or more of steel wire, fish wire and rubber wire. The two ends of the vibrating wire 22 are fixed to the two connecting strips 21 respectively. The fixing form is as follows: Figure 4 As shown, a mounting hole 211 is passed through one side wall of the connecting bar 21, and the end of the vibration wire 22 passes through the mounting hole 211 and is located in the inner cavity of the connecting bar 21. The end of the vibration wire 22 is tied and fixed with a clamping rod 212, and the size of the clamping rod 212 is larger than the diameter of the mounting hole 211, thereby achieving the limitation of the end of the vibration wire 22.

[0045] The vibration generating assembly includes a vibration motor 25 , which is mounted on the connecting bar 21 .

[0046] This embodiment also discloses a spunlace nonwoven fabric 10 production line (not shown in the figure), which includes a constant temperature drying device.

[0047] The implementation principle of Example 1 is as follows: driven by the feed roller 13 and the discharge roller 14, the non-woven fabric 10 is transported horizontally in the box body 1 and passes through the first chamber 100 and the second chamber 200 in sequence. When the non-woven fabric 10 is in the first chamber 100, the vibration motor 25 drives the connecting strip 21 and the vibration net to vibrate, and the vibration force of the vibration net is transmitted downward to the non-woven fabric 10. The vibration force can effectively destroy the adhesion between the fibers of the non-woven fabric 10 and water, and promote the water to separate from the fiber structure. Secondly, the vibration also shatters the water film on the surface of the non-woven fabric 10. Combined with the hot air blown downward by the first hot air component 15, the hot air passes through the micro-porous film on the non-woven fabric 10. The hot air carries the large water droplets into the first chamber 100 and accumulates at the bottom of the first chamber 100, and is then discharged from the drain pipe 101. The downward-flowing hot air enters the second chamber 200 through the transfer air duct 172. The hot air merges with the hot air blown upward by the second hot air assembly 16 and blows upward onto the non-woven fabric 10. The vibration force of the vibrating net in the second chamber 200 is transmitted upward to the non-woven fabric 10, and the vibration force breaks the water film on the surface of the non-woven fabric 10. The merged hot air passes through the tiny holes on the non-woven fabric 10 and carries away the small water droplets from the surface of the non-woven fabric 10, and is finally discharged from the exhaust pipe 104.

[0048] In this way, by setting up two chambers and two vibration mechanisms, it is possible to achieve segmented vibration of the non-woven fabric 10 to shake out small water droplets and large water droplets respectively, and to destroy the adhesion between the fibers of the non-woven fabric 10 and water, that is, to increase the dehydration effect, and then cooperate with the converging flow of hot air to increase the utilization rate of hot air and further increase the drying effect, that is, the dehydration effect and the drying effect are both improved, greatly improving the drying efficiency, thereby indirectly improving the conveying efficiency and production efficiency of the non-woven fabric 10.

[0049] Example 2, Example 2 is different from Example 1 in that Figure 5As shown, the vibrating threads 22 are at the same height, and the length direction of the vibrating threads 22 is the width direction of the non-woven fabric 10 .

[0050] Example 3, Example 3 is different from Example 1 in that Figure 6 As shown, each vibrating thread 22 is at the same height. In this embodiment, there are five vibrating threads 22, of which the length direction of three vibrating threads 22 is the width direction of the non-woven fabric 10, and the length direction of the remaining vibrating threads 22 has an angle with the width direction of the non-woven fabric 10, and the vertical vibrating threads 22 and the inclined vibrating threads 22 are staggered.

[0051] Example 4: Example 4 is configured as follows based on Example 2 or Example 3: Figure 7 、 Figure 8 As shown, a plurality of self-vibrating components are provided in the box 1, and each self-vibrating component is arranged in one-to-one correspondence with each vibrating wire 22. The self-vibrating component is used to drive the corresponding vibrating wire 22 to vibrate in the vertical direction, and the vibration triggering timing of two adjacent vibrating wires 22 is the same or different.

[0052] In other embodiments, the two self-vibrating components can simultaneously trigger the vibration of the portion of the same vibrating wire 22 located in the avoidance space, that is, the two self-vibrating components correspond to one vibrating wire 22 .

[0053] Specifically, the self-vibrating component includes a lifting cylinder 31, a C-shaped frame 32, two paddles 33 and a second spring 34. The lifting cylinder 31 is fixed in the box body 1. The lifting cylinder 31 is located in the avoidance space between the connecting strip 21 and the long side of the non-woven fabric 10. The bottom of the C-shaped frame 32 is fixed to the lifting end of the lifting cylinder 31. The separated ends of the two paddles 33 are respectively hingedly connected to the opposite side walls of the C-shaped frame 32. The lower side of the free end of the paddle 33 is fixedly connected to the C-shaped frame 32 through an inclined second spring 34 (the free end of the paddle 33 is the end of the paddle 33 away from the C-shaped frame 32). The elastic force of the second spring 34 is used to keep the paddle 33 in a horizontal state and the free ends of the two paddles 33 abut against each other.

[0054] The lifting cylinder 31 drives the U-shaped frame 32 to rise. In the process of the lifting cylinder 31 driving the U-shaped frame 32 to rise, the free end of the paddle 33 initially contacts the bottom of the vibrating wire 22. At this time, the elastic force of the second spring 34 is greater than the tension of the vibrating wire 22, and the paddle 33 does not move. The paddle 33 drives the vibrating wire 22 to elastically deform upward, and the tension of the vibrating wire 22 increases. The lifting cylinder 31 continues to drive the U-shaped frame 32 to rise. When the tension of the vibrating wire 22 is greater than the elastic force of the second spring 34, the vibrating wire 22 does not move, and the free end of the paddle 33 deflects downward, and the second spring 34 is compressed. At this time, the paddle 33 avoids the vibrating wire 22, and the paddle 33 is located above the vibrating wire 22. The second spring 34 recovers its deformation to restore the paddle 33 to a horizontal state, and the vibrating wire 22 begins to vibrate at a high frequency until the vibrating wire 22 consumes kinetic energy, and then the lifting cylinder 31 is pressed. 1 then drives the free end of the plectrum 33 to contact the top of the vibrating wire 22. At this time, the elastic force of the second spring 34 is greater than the tension of the vibrating wire 22, and the plectrum 33 remains stationary. The plectrum 33 drives the vibrating wire 22 to elastically deform downward, and the tension of the vibrating wire 22 increases. The lifting cylinder 31 continues to drive the shaped frame 32 to descend. When the tension of the vibrating wire 22 is greater than the elastic force of the second spring 34, the vibrating wire 22 remains stationary, and the free end of the plectrum 33 deflects upward. The second spring 34 stretches. At this time, the plectrum 33 avoids the vibrating wire 22 and is located below the vibrating wire 22. The second spring 34 recovers its deformation to restore the plectrum 33 to a horizontal state. The vibrating wire 22 begins to vibrate at a high frequency until the vibrating wire 22 consumes kinetic energy. In this way, two high-frequency vibrations of the vibrating wire 22 can be achieved in one lift.

[0055] Under the premise of the overall vibration of the original vibration net, each vibrating thread 22 is made to vibrate independently through the self-vibrating component, that is, the vibration frequency of the vibrating thread 22 is greatly increased, and the high-frequency vibration transfers the energy efficiently to the bound water between the fibers of the non-woven fabric 10 through more concentrated kinetic energy, effectively destroying the adhesion between the fibers of the non-woven fabric 10 and water, and accelerating the migration of moisture from the inside of the fiber to the surface, forming a thinner liquid film, increasing the contact area between the hot air and water, and improving the evaporation rate; in addition, the high-frequency vibration disturbs the air layer on the surface of the non-woven fabric 10, reduces the thickness of the thermal boundary layer, and improves the heat and mass transfer efficiency of the hot air to the moisture.

[0056] Example 5: Example 5 is configured as follows based on Example 4: Figure 9 、 Figure 10 As shown, the vibration wire 22 is a fish wire or a rubber wire, that is, in this embodiment, the vibration wire 22 has the characteristics of elastic compression and elastic expansion, and the vibration wire 22 is a hollow structure with a through hole 221.

[0057] The vibration triggering timing of two adjacent vibrating threads 22 is the same, that is, the lifting cylinders 31 perform lifting motion synchronously.

[0058] A baffle 26 is fixedly sealed at the opening on one side of the connecting strip 21, so that the inner cavity of the connecting strip 21 is formed into a closed air intake chamber 20, and a sleeve (not shown in the figure) is fixed at the position of the guide hole 233 of the connecting strip 21. The sleeve is slidably fitted with the guide rod 231. By setting the sleeve, the air intake chamber 20 is prevented from communicating with the external atmosphere through the guide hole 233.

[0059] The specific installation structure of the vibration wire 22 and the connecting strip 21 is as follows: a conical ring 29 is fixed to an inner wall of the connecting strip 21, and the conical ring 29 is coaxial with the mounting hole 211; a bolt 28 is threadedly connected to the other inner wall of the connecting strip 21, and the bolt 28 is coaxial with the mounting hole 211; an air passage 281 is axially opened at the end of the bolt 28; a side air hole 282 connected to the air passage 281 is opened on the side wall of the bolt 28; the side air hole 282 is connected to the air inlet cavity 20 of the connecting strip 21; a sealing gasket 283 is also provided at the screw head of the bolt 28.

[0060] During installation, the end of the vibration wire 22 is cut longitudinally along the length direction of the vibration wire 22 to obtain multiple branch segments 222. One end of the branch segment 222 is still connected to the vibration wire 22 connecting strip 21. Each branch segment 222 is folded outward so that the branch segment 222 is attached to the conical surface of the conical ring 29, and then the bolt 28 is tightened. The end of the bolt 28 is abutted against the branch segment 22 to press the branch segment 222 against the conical surface of the conical ring 29 to achieve the fixation of the vibration wire 22 and the connecting strip 21. At the same time, the through hole 221 of the vibration wire 22 is connected to the air inlet cavity 20 of the connecting strip 21 through the air duct 281. Finally, glue is poured into the annular gap between the inner wall of the mounting hole 211 and the vibration wire 22 to further seal and fix it.

[0061] The box body 1 is provided with an air delivery component, which includes an air delivery pipe 27 and an air compressor (not shown in the figure) located outside the box body 1. The air delivery pipe 27 is a hose, which is connected to the air inlet cavity 20 of the connecting strip 21. The compressed air of the air compressor can enter the air inlet cavity 20 and the through hole 221 through the air delivery pipe 27, and positive pressure is formed in the through hole 221, causing the vibrating wire 22 to expand radially.

[0062] When the self-vibrating component drives the vibrating wire 22 to vibrate independently, the vibrating wire 22 vibrates at a low frequency and a large amplitude to hit the non-woven fabric 10. The non-woven fabric 10 is constantly slightly deformed, making it easier for the moisture inside it to diffuse to the surface. After the vibration amplitude and vibration frequency of the vibrating wire 22 gradually decrease, the air supply component supplies air to the air inlet cavity 20, and a positive pressure is formed in the through hole 221, causing the vibrating wire 22 to expand radially. Since the two ends of the vibrating wire 22 are fixed, its axial length cannot be shortened. According to the Poisson effect (the tendency of radial expansion to be accompanied by axial shortening), the tension (T) of the vibrating wire 22 increases significantly. According to the string vibration formula, the vibration frequency The rate f is proportional to the tension T. Therefore, the increase in tension will directly increase the vibration frequency of the vibrating thread 22, that is, the vibrating thread 22 changes from low-frequency and large-amplitude vibration to high-frequency and small-amplitude vibration, that is, the number of times the non-woven fabric 10 is beaten per unit time increases, forming a more intensive mechanical impact. The high-frequency vibration more effectively destroys the adhesion between the fibers of the non-woven fabric 10 and water through the tiny and intensive impact force, prompting the moisture to separate from the fiber structure, making it easier for the water film on the surface of the non-woven fabric 10 to separate from the non-woven fabric 10. In addition, the high-frequency vibration disturbs the air layer on the surface of the non-woven fabric 10, reduces the thickness of the thermal boundary layer, and improves the heat and mass transfer efficiency of the hot air to the moisture.

[0063] That is, the vibrating thread 22 is first driven to vibrate independently by the self-vibrating component. The vibrating thread 22 vibrates at a low frequency and a large amplitude, so that the non-woven fabric 10 is continuously slightly deformed, making it easier for the moisture inside it to diffuse to the surface. Then, the vibrating thread 22 is radially expanded by air supply, and the tension (T) of the vibrating thread 22 is significantly increased, changing the vibrating thread 22 from a low-frequency and large-amplitude vibration to a high-frequency and small-amplitude vibration. The high-frequency vibration more effectively destroys the adhesion between the fibers of the non-woven fabric 10 and water through a small and intensive impact force, prompting the moisture to separate from the fiber structure, making it easier for the water film on the surface of the non-woven fabric 10 to separate from the non-woven fabric 10.

[0064] Example 6. Example 6 makes the following arrangements based on Example 5: a plurality of micropores (not shown in the figure) are provided on the surface of the vibrating wire 22 facing the non-woven fabric 10 , and the micropores are arranged at intervals along the length direction of the vibrating wire 22 , and the micropores are connected to the through hole 221 .

[0065] When high-pressure gas is injected into the through hole 221, the vibrating thread 22 expands radially, and the tension (T) of the vibrating thread 22 increases significantly, changing the vibrating thread 22 from low-frequency and large-amplitude vibration to high-frequency and small-amplitude vibration. Secondly, part of the high-pressure gas also ejects the micropores at high speed (the pressure of the remaining high-pressure gas still acts on the inner wall of the vibrating thread 22 to maintain the radial expansion state of the vibrating thread 22), directly acting on the surface of the non-woven fabric 10, impacting the adhesion interface between the fibers of the non-woven fabric 10 and water, accelerating the separation of moisture. Secondly, the airflow penetrates the surface of the non-woven fabric 10 to reduce the capillary resistance of moisture between the fibers, thereby utilizing the dual synergistic effect of vibration and airflow to destroy the continuity of the water film between the fibers and reduce moisture back-seepage.

[0066] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A constant temperature drying device, characterized in that: The invention comprises a box body (1), two vibration mechanisms, a first hot air component (15) and a second hot air component (16), wherein a feed port (11) and a discharge port (12) are respectively provided on both sides of the box body (1), and the feed port (11) and the discharge port (12) are respectively provided with two feed rollers (13) and two discharge rollers (14); a partition (17) is provided in the box body (1), and the partition (17) divides the inner cavity of the box body (1) into a first chamber (100) and a second chamber (200); the partition (17) is provided with a through hole (171) for the non-woven fabric (10) to pass horizontally and a transfer air duct (172) connected between the lower half of the first chamber (100) and the lower half of the second chamber (200); the first hot air component (15) and the second hot air component (16) are respectively provided with a feed port (11) and a discharge port (12); the feed port (11) and the discharge port (12) are respectively provided with two feed rollers (13) and two discharge rollers (14); a partition (17) is provided in the box body (1), and the partition (17) divides the inner cavity of the box body (1) into a first chamber (100) and a second chamber (200); the partition (17) is provided with a through hole (171) for the non-woven fabric (10) to pass horizontally and a transfer air duct (172) connected between the lower half of the first chamber (100) and the lower half of the second chamber (200); The wind assembly (15) is arranged at the top of the first chamber (100) and blows hot air downwards, the second hot air assembly (16) is arranged at the bottom of the second chamber (200) and blows hot air upwards, a drainage pipe (101) is arranged at the bottom of the first chamber (100), and an exhaust pipe (104) is arranged at the top of the second chamber (200); two vibration mechanisms are respectively located in the first chamber (100) and the second chamber (200), the vibration mechanism comprising a vibration net and a vibration generating assembly, the vibration net of the first chamber (100) is located above the non-woven fabric (10), and the vibration net of the second chamber (200) is located below the non-woven fabric (10); the vibration generating assembly is used to vibrate the vibration net, and the vibration force of the vibration net is transmitted to the non-woven fabric (10).

2. The constant temperature drying device according to claim 1, characterized in that: The vibration net comprises two connecting strips (21) and a plurality of vibrating threads (22) arranged in an intersecting manner. The two connecting strips (21) are respectively located on both sides of the width direction of the non-woven fabric (10). The connecting strips (21) are connected to the box (1) via a first spring (232). The two ends of the vibrating threads (22) are respectively fixed to the two connecting strips (21).

3. The constant temperature drying device according to claim 1, characterized in that: The vibration net comprises two connecting strips (21) and a plurality of vibration threads (22), the two connecting strips (21) are respectively located on both sides of the width direction of the non-woven fabric (10), the connecting strips (21) are connected to the box (1) through a first spring (232), the two ends of the vibration threads (22) are respectively fixed to the two connecting strips (21), the vibration threads (22) are at the same height, and the length direction of each vibration thread (22) is the width direction of the non-woven fabric (10).

4. The constant temperature drying device according to claim 1, characterized in that: The vibration net comprises two connecting strips (21) and a plurality of vibration threads (22), wherein the two connecting strips (21) are respectively located on both sides of the width direction of the non-woven fabric (10), the connecting strips (21) are connected to the box (1) via a first spring (232), and the two ends of the vibration threads (22) are respectively fixed to the two connecting strips (21), and each vibration thread (22) is at the same height, wherein the length direction of at least one vibration thread (22) is the width direction of the non-woven fabric (10), and the length direction of the remaining vibration threads (22) is at an angle to the width direction of the non-woven fabric (10).

5. The constant temperature drying device according to any one of claims 2 to 4, characterized in that: The box body (1) is fixed with a vertically arranged guide rod (231), both ends of the connecting bar (21) are penetrated with guide holes (233) for the guide rod (231) to pass through, the first spring (232) is sleeved on the guide rod (231), and the vibration generating component includes a vibration motor (25), which is installed on the connecting bar (21).

6. The constant temperature drying device according to claim 3 or 4, characterized in that: A plurality of self-vibrating components are provided in the box (1), each of the self-vibrating components being arranged in one-to-one correspondence with each of the vibrating threads (22). The self-vibrating components are used to drive the corresponding vibrating threads (22) to vibrate in a vertical direction, and the vibration triggering timings of two adjacent vibrating threads (22) are the same or different.

7. The constant temperature drying device according to claim 6, characterized in that: The vibrating wire (22) is a combination of one or more of steel wire, fish wire and rubber wire. The self-vibrating assembly comprises a lifting cylinder (31), a shaped frame (32), two plectrums (33) and a second spring (34). The separated ends of the two plectrums (33) are respectively hingedly connected to the opposite side walls of the shaped frame (32). The lower side of the free end of the plectrum (33) is fixedly connected to the shaped frame (32) through the inclined second spring (34). The elastic force of the second spring (34) is used to keep the plectrum (33) in a horizontal state and the free ends of the two plectrums (33) are in contact with each other. The lifting cylinder (31) is used to drive the shaped frame (32) to rise and fall, so that the free ends of the plectrums (33) contact the vibrating wire (22).

8. The constant temperature drying device according to claim 6, characterized in that: The vibration triggering timing of two adjacent vibration threads (22) is the same, and the vibration threads (22) are fish threads or rubber threads; the connecting strip (21) has an air inlet cavity (20), and the vibration threads (22) are hollow structures with through holes (221), and the through holes (221) are connected to the air inlet cavity (20); the box body (1) is provided with an air delivery component, and the air delivery component is used to deliver air into the air inlet cavity (20), and positive pressure is formed in the through holes (221), so that the vibration threads (22) expand radially.

9. The constant temperature drying device according to claim 8, characterized in that: The portion of the surface of the vibrating thread (22) facing the non-woven fabric (10) is provided with a plurality of micropores spaced apart along its length direction, and the micropores are connected to the through hole (221).

10. A spunlace nonwoven fabric (10) production line, characterized by: It includes the constant temperature drying device according to claim 1.

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