Fiber droplet-free humidifying and heating device

Abstract

The invention discloses a fiber droplet-free humidifying and heating device which comprises two heating boxes which are symmetrically arranged up and down, the two heating boxes can be opened through hinge connection, and a silk sheet channel is formed between the two heating boxes; a distribution pipe is arranged on the side, away from the yarn sheet channel, in the heating box, small holes are formed in the distribution pipe in the length direction, and air outlet holes communicated with the yarn sheet channel are formed in the heating box. A distribution structure is further arranged in the heating box, and wet and hot air sprayed out of the distribution pipe is subjected to multi-stage distribution through the distribution structure and then enters the silk sheet channel through the air outlet holes. The fiber droplet-free humidifying and heating device provided by the invention is uniform in humidifying and heating, good in effect and high in speed, and avoids wetting of the fibers by droplets in the humidifying and heating process, so that the quality of crimped fibers is ensured.

Description

Technical Field

[0001] The invention relates to a fiber processing device, in particular to a fiber droplet-free humidification and heating device. Background Art

[0002] In order to make chemical fibers have better cohesion and facilitate their application in textiles, chemical fibers need to be crimped. According to the process method, crimping is generally divided into hot water crimping and mechanical crimping. Generally speaking, the effect of mechanical crimping is much better than that of hot water crimping. In the article "Working Principle of Horizontal Stuffing Box Crimping Machine and Analysis of the Main Factors Affecting the Crimping Number", it is discussed that the basic principle of mechanical crimping is: the filament bundle that reaches the glass transition temperature, has uniform thickness, suitable width, and stable tension is fed into a closed crimping box under the grip of a pair of upper and lower crimping rollers. In this process, the fiber is axially squeezed, and the filament bundle is bent to form a certain density of crimp waves, completing a crimp, and then the desired physical properties are obtained after secondary crimping and shaping in the crimping box.

[0003] In fact, the state of the fiber before entering the crimping machine has a very important influence on the crimping effect and the stability of the crimping operation. Usually, saturated steam or hot water is used to heat and humidify the fiber. For non-water-soluble fibers such as polyester, polypropylene, acrylic, etc., the effect of fiber moisture and water content on the crimping effect is not obvious. However, for fibers with poor hot water resistance, such as polyvinyl alcohol fibers that have not been acetalized, the temperature and humidity of the fiber before entering the crimping machine are crucial to the crimping effect. If the moisture content is too low, the crimping operation stability is poor. If the moisture content is too high, or even water droplets are contained, the fibers will stick together or even resinify during the crimping process, which seriously affects the quality of the crimped fibers. Summary of the invention

[0004] In order to solve the technical problems in the prior art that the device for heating and humidifying the filament bundle before curling has a complex structure and high cost, the present invention provides a fiber droplet-free humidification and heating device, comprising two heating boxes symmetrically arranged up and down, the two heating boxes are connected by a hinge and can be opened, and a filament channel is formed between the two heating boxes; wherein: a distribution pipe is provided on the side of the heating box away from the filament channel, the distribution pipe has small holes along the length direction, and an air outlet connected to the filament channel is provided in the heating box; a distribution structure is also provided in the heating box, and the humid hot air sprayed from the distribution pipe enters the filament channel through the air outlet after being distributed in multiple stages by the distribution structure.

[0005] Compared with the prior art, in this solution, after the distribution structure is set in the heating box, the distribution structure is used to perform multi-stage distribution of the hot and humid air, and the hot and humid air after the multi-stage distribution finally enters the silk sheet channel to perform humidification and heating operations on the fibers in the silk sheet channel. After the multi-stage distribution, the humidity of the hot and humid air will be reduced, which can avoid the generation of droplets in the steam, and thus can reduce the situation of fiber adhesion during the curling process due to high steam humidity, thereby improving the quality of the curled fiber.

[0006] Preferably, the distribution structure performs three-stage distribution on the hot and humid air ejected from the distribution pipe. In this solution, the three-stage distribution design can avoid the appearance of liquid droplets in the steam and improve the quality of the crimped fibers, and can also simplify the distribution structure and reduce equipment costs.

[0007] Preferably, the distribution structure includes a water baffle, a first distribution net, a second distribution net and a third distribution net, and the water baffle, the first distribution net, the second distribution net and the third distribution net are sequentially arranged on one side of the distribution pipe facing the wire sheet channel in the direction toward the wire sheet channel. In this solution, the three-level distribution of humid hot air is achieved by the cooperation of the water baffle and the three distribution nets, and the structure is simple.

[0008] Preferably, both ends of the water baffle are provided with a first distribution net, and both ends of the third distribution net are provided with side plates; the water baffle and the side of the heating box away from the wire sheet channel form a first cavity, the water baffle, two first distribution nets and the second distribution net are enclosed to form a second cavity, the second distribution net and the third distribution net are enclosed to form a third cavity, and the hot and humid air ejected from the distribution pipe passes through the first cavity, the second cavity and the third cavity in turn and then enters the wire sheet channel. In this solution, the space in the heating box is divided into three distribution cavities by the cooperation of the water baffle, the first distribution net, the second distribution net and the third distribution net, and the hot and humid air is distributed in three levels by the three distribution cavities, and the structure is simple.

[0009] Preferably, the opening area of ​​the first distribution network is larger than the opening area of ​​the second distribution network, and the opening area of ​​the second distribution network is larger than the opening area of ​​the third distribution network. In this solution, the design of the comparative relationship between the opening areas of each distribution network can ensure that the ejected humid hot air has a higher speed, thereby achieving a better humidification and heating effect on the silk sheets in the silk sheet channel.

[0010] Preferably, the length of the water baffle is greater than the distance between the two first distribution nets. In order to prevent the condensed water formed by the hot and humid air on the water baffle from entering the subsequent distribution of the hot and humid air, thereby affecting the humidity of the hot and humid air, in this solution, the length of the water baffle is set to be greater than the distance between the first distribution nets. Even if condensed water appears on the water baffle, since the water baffle extends out of the first distribution net, the condensed water will not reach the first distribution net, and will not enter the subsequent distribution process, thereby avoiding the influence of condensed water on the humidity of the hot and humid air, and the structure is simple.

[0011] Preferably, both ends of the water baffle are inclined toward the wire sheet channel. In this solution, the inclined arrangement of the water baffle can avoid the accumulation of condensed water on the water baffle, and can further avoid the influence of condensed water on the humidity of the hot and humid air, and the structure is simple.

[0012] Preferably, the length of the water baffle is greater than the length of the second distribution network and the third distribution network. In this solution, the setting of the length of the water baffle can also prevent condensed water from entering the second cavity and the third cavity, and can further prevent the influence of condensed water on the humidity of the hot and humid air, and the structure is simple.

[0013] Preferably, the inner surface and the outer surface of the shell of the heating box are filled with non-metallic insulation material. In this solution, the filling of non-metallic insulation material between the inner surface and the outer surface can achieve heat preservation in the heating box, reduce the occurrence of condensed water, and further reduce the impact on the humidity of the hot and humid air, and the structure is simple.

[0014] Preferably, the heating box located above and the third cavity are provided with an upper water guide groove, and the water guide groove is connected to an upper drain valve; and / or the bottom of the heating box located below is connected to a lower drain valve. In this solution, the setting of the upper water guide groove can timely discharge the condensed water in the upper heating box, and the setting of the lower drain valve can timely discharge the condensed water in the lower heating box, so as to reduce the influence of the condensed water on the humidity of the humid hot air, and the structure is simple.

[0015] The present invention has the following beneficial effects: the fiber droplet-free humidification and heating device provided by the present invention has uniform humidification and heating, good effect and fast speed, and avoids the wetting of the fiber by droplets during the humidification and heating process, so that the quality of the curled fiber is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side structural schematic diagram of an embodiment of a fiber droplet-free humidification and heating device of the present invention; Figure 2 for Figure 1 Schematic diagram of the front structure. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods: 1. Definition Cohesion: The resistance generated when fibers in contact with each other slide relative to each other in the axial direction or when fibers are pulled out of a fiber bundle under the condition of zero radial pressure. It is caused by the roughness or scales on the fiber surface, as well as the existence of twist or curl, and is an important factor in determining the spinnability of textile fibers.

[0018] 2. The figure marks in the drawings of the specification include: heating box 1, first cavity 2, distribution pipe 3, water baffle 4, second cavity 5, third cavity 6, second distribution network 7, first distribution network 8, third distribution network 9, upper water guide groove 10, hinge 11, wire sheet 20, steam pipe 21, upper drain valve 22, lower drain valve 23.

[0019] The embodiment is basically as shown in the attached Figure 1 and Figure 2 As shown: A fiber droplet-free humidification and heating device comprises two heating boxes 1 symmetrically arranged in an upper and lower position, the box body of the heating box 1 is 2.8 meters long, and the inner surface and the outer surface of the shell of the heating box 1 are filled with non-metallic heat preservation materials. The upper and lower heating boxes 1 are connected by a hinge 11 and can be opened in opposite directions. The upper and lower heating boxes 1 form a passage for a filament 20, and two bundles of filaments 20 run in the passage for the filament 20, and the total denier of the filament bundle is 1 million dtex.

[0020] A distribution pipe 3 is provided on the side of the heating box 1 away from the wire sheet 20 channel. The distribution pipe 3 has small holes along the length direction. The diameter of the small holes is 1.2 mm. An air outlet connected to the wire sheet 20 channel is provided in the heating box 1. In this embodiment, the distribution pipe 3 is located at the top of the upper heating box 1 and the bottom of the lower heating box 1. The distribution pipe is connected to a steam pipe, and a steam valve and a compressed air valve are provided on the steam pipe.

[0021] A distribution structure is also provided in the heating box 1. The hot and humid air ejected from the distribution pipe 3 is distributed in multiple stages by the distribution structure and then enters the channel of the silk sheet 20 through the air outlet.

[0022] The distribution structure performs three-level distribution on the hot and humid air ejected from the distribution pipe 3. The distribution structure includes a water baffle 4, a first distribution net 8, a second distribution net 7 and a third distribution net 9. The water baffle 4, the first distribution net 8, the second distribution net 7 and the third distribution net 9 are sequentially arranged on the side of the distribution pipe 3 facing the wire sheet 20 channel in the direction toward the wire sheet 20 channel; both ends of the water baffle 4 are provided with the first distribution net 8, and both ends of the third distribution net 9 are provided with side panels; the water baffle 4 and the side of the heating box 1 away from the wire sheet 20 channel form a first cavity 2, the water baffle 4, the two first distribution nets 8 and the second distribution net 7 enclose a second cavity 5, the second distribution net 7 and the third distribution net 9 enclose a third cavity 6, and the hot and humid air ejected from the distribution pipe 3 passes through the first cavity 2, the second cavity 5 and the third cavity 6 in sequence and then enters the wire sheet 20 channel.

[0023] The opening area of ​​the first distribution network 8 is S1, the opening area of ​​the second distribution network 7 is S2, and the opening area of ​​the third distribution network 9 is S3, wherein S1>S2>S3. The length of the water baffle 4 is greater than the distance between the two first distribution networks 8, the length of the water baffle 4 is greater than the length of the second distribution network 7 and the third distribution network 9, and the two ends of the water baffle 4 are inclined toward the channel of the wire sheet 20. The upper heating box 1 and the third cavity 6 are provided with an upper water guide groove 10, and the upper water guide groove 10 is connected to an upper drainage valve 22; the bottom of the heating box 1 located below is connected to a lower drainage valve 23.

[0024] The bottom of the upper heating box 1 and the top of the lower heating box 1 are provided with uniform small holes, namely the third distribution net 9, with a hole diameter of 2 mm, and the hot and humid air ejected from the small holes heats and humidifies the upper and lower surfaces of the silk sheet 20. The shell of the upper and lower heating boxes 1 is divided into two layers, inner and outer, made of stainless steel material, and filled with non-metallic heat preservation material in between.

[0025] The structure of the lower box is basically the same as that of the upper box. The hot and humid air sprayed from the distribution pipe 3 enters the first cavity 2, and enters the second cavity 5 after passing through the first distribution network 8. The hot and humid air in the second cavity 5 enters the third cavity 6 through the second distribution network 7, and is then sprayed out through the third distribution network 9 to heat and humidify the bottom of the silk sheet 20.

[0026] The specific implementation process is as follows: when working, open the steam valve and compressed air valve of the upper and lower heating boxes 1 to preheat the internal components of the box, and adjust the valve to control the temperature, humidity and flow of the hot and humid air. When the box temperature reaches the required level, quickly open the upper box, introduce the silk sheet 20 through the box, and then close the upper box to start working.

[0027] Specifically, taking the upper heating box 1 as an example, inside the heating box 1, there is a distribution pipe 3 at the top, and the distribution pipe 3 is connected to the steam pipe 21. The distribution pipe 3 is evenly distributed with small holes of 1.5 mm along the length direction, and the hot and humid air is evenly ejected from the small holes and enters the first upper cavity 2. The upper part of the first upper cavity 2 is provided with inclined water baffles 4 at both ends. Under the water baffle 4, a vertical first distribution net 8 is provided, and together with the horizontal second distribution net 7, the water baffle 4, the first distribution net 8, and the second distribution net 7 together constitute the second cavity 5. The hot and humid air in the first cavity 2 enters the second cavity 5 through the first distribution net 8. Under the second distribution net 7, there is a third distribution net 9, and the second distribution net 7, the third distribution net 9 and the side wall of the third distribution net 9 constitute the third cavity 6. The hot and humid air in the second cavity 5 enters the third upper cavity 6 through the second distribution net 7, and then is ejected through the third distribution net 9 to heat and humidify the top of the silk sheet 20.

[0028] An upper water guide groove 10 is formed between the inner wall of the shell 1 of the upper heating box 1 and the third cavity 6. There is a certain amount of condensed water in the steam pipe 21. Although the inner wall of the heating box 1 is isolated from the outside by an insulation layer, condensed water will be generated over a long period of time. All these condensed water will be introduced into the upper water guide groove 10 and discharged, and discharged from the heating box 1 through the upper drain valve 22. The condensed water in the lower heating box 1 and the condensed water in the steam pipe 21 are accumulated at the bottom of the lower heating box 1 and discharged, and discharged from the lower heating box 1 through the lower drain valve 23. The upper drain valve 22 and the lower drain valve 23 are preferably steam traps, because the hot and humid air in the first cavity 2 has a certain pressure, and the accumulated water can be automatically discharged through the steam trap, and it will automatically close when there is no water.

[0029] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A fiber droplet-free humidification and heating device, comprising two heating boxes symmetrically arranged up and down, the two heating boxes are connected by hinges and can be opened, and a fiber sheet channel is formed between the two heating boxes; characterized in that: A distribution pipe is provided on the side of the heating box away from the wire channel, and small holes are opened along the length direction of the distribution pipe. An air outlet connected to the wire channel is provided in the heating box; a distribution structure is also provided in the heating box, and the hot and humid air sprayed out of the distribution pipe enters the wire channel through the air outlet after multi-stage distribution through the distribution structure.

2. The fiber droplet-free humidification and heating device according to claim 1, characterized in that: The distribution structure performs three-level distribution on the hot and humid air ejected from the distribution pipe.

3. The fiber droplet-free humidification and heating device according to claim 2, characterized in that: The distribution structure includes a water baffle, a first distribution network, a second distribution network and a third distribution network, and the water baffle, the first distribution network, the second distribution network and the third distribution network are sequentially arranged on one side of the distribution pipe toward the wire sheet channel along the direction toward the wire sheet channel.

4. The fiber droplet-free humidification and heating device according to claim 3 is characterized in that: Both ends of the water baffle are provided with a first distribution network, and both ends of the third distribution network are provided with side panels; the water baffle and the side of the heating box away from the wire sheet channel form a first cavity, the water baffle, two first distribution networks and the second distribution network form a second cavity, the second distribution network and the third distribution network form a third cavity, and the hot and humid air ejected from the distribution pipe passes through the first cavity, the second cavity and the third cavity in turn and then enters the wire sheet channel.

5. The fiber droplet-free humidification and heating device according to claim 4, characterized in that: The opening area of ​​the first distribution network is larger than the opening area of ​​the second distribution network, and the opening area of ​​the second distribution network is larger than the opening area of ​​the third distribution network.

6. The fiber droplet-free humidification and heating device according to claim 5, characterized in that: The length of the water baffle is greater than the distance between the two first distribution networks.

7. The fiber droplet-free humidification and heating device according to claim 6, characterized in that: Both ends of the water baffle are arranged obliquely toward the wire sheet channel.

8. The fiber droplet-free humidification and heating device according to claim 7, characterized in that: The length of the water baffle is greater than the length of the second distribution network and the third distribution network.

9. The fiber droplet-free humidification and heating device according to any one of claims 1 to 8, characterized in that: The inner surface and the outer surface of the shell of the heating box are filled with non-metallic heat-insulating material.

10. The fiber droplet-free humidification and heating device according to claim 9, characterized in that: The heating box located above and the third cavity are provided with an upper water guide groove, and the water guide groove is connected with an upper drainage valve; and / or the bottom of the heating box located below is connected with a lower drainage valve.

Images