阅读说明：本技术 用于纤维拉伸的卧式加热装置 (Horizontal heating device for fiber drawing ) 是由 马海燕 杨西峰 张平平 于 2021-10-11 设计创作，主要内容包括：本申请公开了一种用于纤维拉伸的卧式加热装置,加热装置包括设有开口的容纳腔,容纳腔内设置纤维通道,纤维通道从加热装置一侧延伸至加热装置另一侧；容纳腔内设有多个并列的风道,多个风道沿纤维通道长度方向延伸设置,每个风道包括第一部分和第二部分,第一部分和第二部分相对设置,且第一部分与第二部分之间设有用于放置纤维通道的空间。根据本申请实施例提供的技术方案,通过将加热装置中的风道进行分隔,形成多个并列的风道,各个风道之间相互间隔,不互相影响,各个风道中间设置放置纤维通道的空间,供纤维穿过,通过各个风道对纤维进行加热,各个风道单独对纤维进行吹风控制,提高加热装置对纤维吹风的稳定性。(The application discloses a horizontal heating device for fiber drawing, which comprises an accommodating cavity with an opening, wherein a fiber channel is arranged in the accommodating cavity and extends from one side of the heating device to the other side of the heating device; the accommodating cavity is internally provided with a plurality of parallel air channels, the air channels extend along the length direction of the fiber channel, each air channel comprises a first part and a second part, the first part and the second part are oppositely arranged, and a space for placing the fiber channel is arranged between the first part and the second part. According to the technical scheme that this application embodiment provided, separate through the wind channel with among the heating device, form a plurality of wind channels that parallel, separate each other between each wind channel, do not influence each other, set up the space of placing the fibre passageway in the middle of each wind channel, supply the fibre to pass, heat the fibre through each wind channel, each wind channel is bloied control to the fibre alone, improves the stability that heating device bloied to the fibre.)

1. A horizontal heating device for fiber drawing is characterized in that the heating device comprises an accommodating cavity with an opening, a fiber channel is arranged in the accommodating cavity, and the fiber channel extends from one side of the heating device to the other side of the heating device;

a plurality of parallel air channels are arranged in the accommodating cavity and extend along the length direction of the fiber channel,

each air channel comprises a first part and a second part, the first part and the second part are arranged oppositely, and a space for placing the fiber channel is arranged between the first part and the second part.

2. The horizontal heating apparatus for fiber drawing according to claim 1, wherein a first exhaust duct and a second exhaust duct are further provided in the accommodation chamber, a plurality of the first portions are connected to the first exhaust duct, and a plurality of the second portions are connected to the second exhaust duct;

the heating device also comprises a fan, the air outlet of the fan is connected to the second exhaust duct,

the third exhaust duct is still established in the chamber outside of holding, third exhaust duct one end is connected to first exhaust duct, the other end is connected to the air intake of fan.

3. The horizontal heating apparatus for fiber drawing according to claim 2, wherein a side of each of the first portions and the second portions adjacent to the fiber passage is covered with a filtering damping net.

4. The horizontal heating device for fiber drawing according to claim 1, wherein a wind speed measuring sensor and a temperature sensor are arranged between each second part and the fiber channel, the wind speed measuring sensor is used for measuring the wind speed of the current wind channel, and the temperature sensor is used for measuring the temperature of the current wind channel.

5. The horizontal heating device for fiber drawing according to claim 4, wherein a heater is arranged between each second part and the second exhaust duct for heating the air in the current air duct, and each heater is provided with a thermometer.

6. The horizontal heating device for fiber drawing according to claim 4, wherein a proportional ventilation regulating valve is further arranged between each heater and the filtering damping net.

7. The horizontal heating device for fiber drawing according to claim 2, wherein the opening cover of the containing cavity is provided with an openable and closable cover, and the surface of the cover and the surface of the third exhaust duct are both covered with aerogel nano thermal insulation material.

8. The horizontal heating apparatus for fiber drawing according to claim 6, further comprising a control means for receiving a temperature of each of the temperature sensors,

if the received temperature is less than the minimum set value of the current air channel, controlling a heater corresponding to the current temperature sensor to start heating,

if the received temperature is higher than the maximum set value of the current air channel, controlling the heating sensor corresponding to the current temperature sensor to stop heating or adjusting the flow of the proportional ventilation regulating valve,

and if the received temperature is between the maximum set value and the minimum set value of the current air channel, controlling the heating sensor and the proportional ventilation regulating valve corresponding to the current temperature sensor to keep the current state.

9. The horizontal heating device for fiber drawing according to claim 8, wherein the control device is further configured to receive the wind speed of each wind speed measuring device, and if the received wind speed is outside the set range of the current wind channel, adjust the flow rate of the proportional ventilation regulating valve so that the wind speed of each wind speed measuring device is within the set range.

Technical Field

The present invention relates generally to the field of monofilament drawing and more particularly to horizontal heating apparatus for fiber drawing.

Background

In the technical field of fiber production, fiber drawing is an important production link, a horizontal heating device is widely applied in the production link of fiber drawing, the temperature required by fiber drawing is achieved by heating air, and then the hot air is forcibly circulated by a fan to heat the fibers, and important indexes for measuring the horizontal heating device are the sensitivity of temperature regulation and control in the device and the uniformity of temperature.

However, in the prior art, the air duct provided in the heating device is generally long, the air pressure and flow in the air duct are not sensitive to adjustment only by adjusting the rotating speed of the fan impeller, and the air pressure is unstable, so that the difference of dry heat shrinkage of the produced fibers is large.

Disclosure of Invention

In view of the above-mentioned drawbacks or deficiencies in the prior art, it would be desirable to provide a horizontal heating apparatus for fiber drawing.

In a first aspect, a horizontal heating device for fiber drawing is provided, the heating device comprises an accommodating cavity provided with an opening, a fiber channel is arranged in the accommodating cavity, and the fiber channel extends from one side of the heating device to the other side of the heating device;

a plurality of parallel air channels are arranged in the accommodating cavity and extend along the length direction of the fiber channel,

each air channel comprises a first part and a second part, the first part and the second part are arranged oppositely, and a space for placing the fiber channel is arranged between the first part and the second part.

According to the technical scheme that this application embodiment provided, separate through the wind channel with among the heating device, form a plurality of wind channels that parallel, separate each other between each wind channel, do not influence each other, set up the space of placing the fibre passageway in the middle of each wind channel, supply the fibre to pass, heat the fibre through each wind channel, each wind channel is bloied control to the fibre alone, improves the stability that heating device bloied to the fibre.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a front view of a horizontal heating apparatus for drawing fibers in this embodiment;

FIG. 2 is a right side view of the horizontal heating apparatus for drawing fibers in this embodiment;

FIG. 3 is a flow chart of temperature control of the horizontal heating apparatus for fiber drawing in this embodiment.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 and fig. 2, the present embodiment provides a horizontal heating device for fiber drawing, the heating device includes an accommodating cavity 1 with an opening, a fiber channel 2 is disposed in the accommodating cavity 1, and the fiber channel 2 extends from one side of the heating device to the other side of the heating device;

a plurality of parallel air ducts 3 are arranged in the accommodating cavity 1, the air ducts 3 extend along the length direction of the fiber channel 1,

each of the wind tunnel 3 includes a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 are disposed opposite to each other, and a space for placing the fiber passage 1 is provided between the first portion 31 and the second portion 32.

In the embodiment, the air channels in the heating device are separated to form a plurality of parallel air channels, the air channels are spaced from each other and do not affect each other, a space for placing a fiber channel is arranged in the middle of each air channel for the fiber to pass through, the air blown by each air channel heats the fiber, each air channel forms a structure similar to an air curtain, the fiber is independently blown and controlled, and the blowing stability of the heating device to the fiber is improved; simultaneously, the wind channel through upper and lower structure relates to, and hot-blast is difficult to flow from both ends, causes the heat to run off, has improved this heating device's efficiency.

Wherein, the intracavity sets up and holds chamber 1 in the heating device, it is equipped with the opening to hold chamber 1, be convenient for operate this heating device, it sets up the fibre passageway to hold the intracavity, this fibre passageway is used for placing the fibre, blow hot-blast heating it through the wind channel among the heating device afterwards, the fibre of being convenient for is stretched, wherein, this heating device firstly adjusts each parameter to the device when using, adjust the wind speed and the temperature etc. in each wind channel, when the wind speed and the temperature regulation in each wind channel are to the demand of production technology, the workman pulls in this heating device with fibre silk bundle from the one end of fibre passageway, pull out from the other end again, arrange the silk bundle and carry out fibrous heating stretch after good, the fibre is with invariable speed lateral motion and heating in the device.

The air ducts 3 in the accommodating cavity 1 are arranged in parallel, closely arranged with no gap, and transversely arranged to form the structure shown in fig. 1, the number of the air ducts 3 is determined according to actual requirements, the width of each air duct is preferably set to be 0.5-0.6m, and the width of the horizontal heating device in the embodiment is 3-4m, so that six air ducts are preferably arranged for blowing and heating; each air duct comprises two parts, namely a first part 31 and a second part 32, wherein the two parts are arranged oppositely, and air is blown from the first part 31 to the second part 32 or blown from the second part 32 to the first part 31, and the air duct is determined according to the installation position of an actual fan.

Further, a first exhaust duct 9 and a second exhaust duct 10 are further arranged in the accommodating cavity 1, the plurality of first portions 31 are connected to the first exhaust duct 9, and the plurality of second portions 31 are connected to the second exhaust duct 10;

the heating device also comprises a fan 15, an air outlet of the fan 15 is connected to the second exhaust duct 10,

the third exhaust duct 11 is still established in the chamber 1 outside of holding, third exhaust duct 11 one end is connected to first exhaust duct 9, and the other end is connected to the air intake of fan 15.

The heating device in the embodiment comprises a fan, wherein a second exhaust pipeline is connected to an air outlet of the fan, when the fan is started, air is blown out upwards from the second exhaust pipeline, is diffused to a second part of an air channel and is blown to a first part of the air channel by the second part, the first part of the air channel is connected with a first exhaust pipeline, the first exhaust pipeline is connected to the fan through a third exhaust pipeline, the air in the first part is blown into the fan through the first exhaust pipeline, air is extracted and supplied through the fan and a corresponding pipeline, and the hot air in the heating device is forced to perform internal circulation;

wherein, the increase sets up the third exhaust duct and carries out the UNICOM with second exhaust duct and fan to set up the third exhaust duct in heating device hold the chamber outside, can not influence the heated air circulation that corresponding exhaust duct realized to the action that holds the intracavity.

Further, the side of each first portion 31 and each second portion 32 close to the fiber passage 1 is covered with a filtering and damping net 4.

Although in this application cut apart the wind channel, form a plurality of wind channels and supply air, the hot-blast wind speed that every wind channel blew off still can be very fast in business turn over department, the hot-air is the turbulent flow, still there is great interference to the fibre, consequently, in the first part and the second part in wind channel, the position increase of wind exit sets up the filtration damping net, can stabilize the velocity of flow of fluid pressure and fluid, the hot-air that reduces to have unstable wind pressure and unstable wind speed directly strikes the fibre in the through arrangement, and cause the unstable shortcoming of product quality.

Further, a wind speed measuring sensor 5 and a temperature sensor 6 are arranged between each second portion 32 and the fiber channel 2, the wind speed measuring sensor 5 is used for measuring the wind speed of the current air channel, and the temperature sensor 6 is used for measuring the temperature of the current air channel.

In the prior art, heating pipes of a heating device are arranged along the width direction, all the heating pipes control heating of the heating pipes through the same temperature control system, independent temperature regulation and control cannot be carried out on a local area in the device, and due to the fact that an air duct is long and only one temperature measuring point is provided, the temperature uniformity in the device is poor and the temperature regulation and control are insensitive, and in the hot stretching process of large-diameter monofilaments, the raw leather and a core layer are heated unevenly, stretching points are unstable, and strength and modulus of the monofilaments are insufficient; in this embodiment all set up wind speed measurement sensor and temperature sensor in the second part position in every wind channel, a plurality of temperature measurement points and wind speed measurement point are provided, measure hot-blast temperature and velocity of flow stage by stage, control stage by stage, make the temperature in the fibre channel comparatively balanced, in the tensile in-process of major diameter monofilament, the wind channel temperature that can control the anterior segment earlier is slightly low, the wind channel temperature of interrupt improves, make the sandwich layer and the cortex homoenergetic thermally equivalent of monofilament, the skin is heated and the not heated condition yet of sandwich layer, the skin core is heated evenly, make the tensile of monofilament more temperature, improve the intensity and the modulus of monofilament.

Further, a heater 8 is arranged between each second portion 32 and the second exhaust duct 10, and is used for heating the air in the current air duct, and a thermometer 14 is installed on each heater 8.

In the embodiment, the second part of each air channel is also provided with a heater, the air in the current air channel is heated by the heaters on the air channels, the function of respectively controlling the temperature of each air channel is realized, meanwhile, a thermometer is arranged on each heater, and the temperature of the heater is observed in real time through the thermometer, so that the dry burning of the heater is prevented.

Further, a proportional ventilation regulating valve 7 is arranged between each heater 8 and the filtering damping net 4.

In the embodiment, a proportional ventilation regulating valve is further arranged in each air channel to regulate the air speed and the air volume, and in order to realize the independent control of each air channel, the regulating valve is arranged in each air channel, so that the control is carried out stage by stage, and the independent control of each air channel is realized.

Further, the opening 1 of the accommodating cavity is covered with an openable cover 13, and the surface of the cover 13 and the surface of the third exhaust duct 11 are both covered with aerogel nanometer thermal insulation materials 12.

In the embodiment, the cover is arranged at the opening of the accommodating cavity, the cover can be opened and closed, a worker can open the cover to adjust the monofilament tows, the third exhaust duct is arranged outside the accommodating cavity, and the opening and closing of the cover do not influence the exhaust duct; meanwhile, aerogel nanometer thermal insulation materials are covered on the surface of the cover and the surface of the third exhaust pipeline, and the aerogel nanometer thermal insulation materials have very low density and very low thermal conductivity, can insulate heat and preserve heat, and reduce the heat loss of the whole heating device.

The heating device in the embodiment is also provided with a touch screen and other structures, so that workers can set all process parameters through the touch screen and set the emergency button at the same time, and can be stopped emergently when an emergency fault occurs; the cover is also provided with a pneumatic hand-operated valve which can control the expansion of the cylinder, the cylinder pulls the hinge pull rod of the device, the pull rod is connected with the upper part of the device, and the pulling pull rod can control the rotation of the hinge to control the opening and closing of the upper half part of the device, thereby facilitating the operation of workers.

As shown in fig. 3, the present embodiment further provides a temperature control process of the horizontal heating device for fiber drawing, which includes a control device for receiving the temperature of each of the temperature sensors,

if the received temperature is less than the minimum set value of the current air channel, controlling a heater corresponding to the current temperature sensor to start heating,

if the received temperature is higher than the maximum set value of the current air channel, controlling the heating sensor corresponding to the current temperature sensor to stop heating or adjusting the flow of the proportional ventilation regulating valve,

and if the received temperature is between the maximum set value and the minimum set value of the current air channel, controlling the heating sensor and the proportional ventilation regulating valve corresponding to the current temperature sensor to keep the current state.

In this embodiment, the temperature of the temperature sensor is received by the control device in real time, whether the temperature in the current air channel is suitable for monofilament stretching is judged according to the temperature condition, the maximum set value and the minimum set value set in each air channel are different, corresponding parameters are determined according to the air channels at different positions, if the temperature of the received temperature sensor is greater than the maximum value, the temperature in the current air channel needs to be adjusted, the heating sensor can be controlled to stop heating, or a proportional ventilation regulating valve is adjusted, so that the flow of hot air is reduced, and the corresponding effect of cooling the hot air is achieved, if the temperature of the received temperature sensor is less than the minimum value, it is indicated that the temperature of the current air channel does not meet the requirement, the heater needs to be controlled to heat, so that the temperature in the air channel rises, and if the detected temperature is within the set range, the current temperature range needs to be maintained, the heating and drawing of the filaments are carried out at the current temperature.

Furthermore, the control device is further configured to receive the wind speeds of the wind speed measuring devices, and adjust the flow rate of the proportional ventilation regulating valve if the received wind speeds are outside the set range of the current wind channel, so that the wind speeds of the wind speed measuring devices are within the set range.

In this embodiment, a wind speed measuring device is installed in each wind channel, and the wind speed of the current wind channel is detected in real time by the wind speed measuring device, so that the wind speed needs to be controlled within a proper range to avoid affecting the fibers.

The control device in this embodiment may adopt a PLC, i.e., a programmable logic controller, the heating device is internally provided with a multipoint temperature control system, the PLC periodically samples the temperature of each temperature control point through a temperature acquisition module, performs operation according to a set target temperature and related parameters, outputs a corresponding control quantity, and controls the heater and other structures, thereby achieving the purpose of temperature control. The temperature control system is independently arranged in the six air channels in the device, so that the temperature detection of each air channel is more accurate and sensitive. Through the host computer, except convenient operation, nimble processing, can also set up the temperature, read temperature history curve, real-time curve, data record etc.. In addition, each air channel in the device is provided with an air speed sensor, so that the real-time condition of the air speed in the air channel can be detected in real time, the PLC analog input module periodically samples the air speed of each air channel, the PLC performs function operation by using floating point numbers and outputs corresponding control quantity, the flow of hot air in each air channel is controlled by controlling a proportional ventilation regulating valve in the air channel and controlling the rotating speed of a fan, the sectional area of an outlet of the air channel is constant, and when the flow is reduced, the air speed is correspondingly reduced.

The temperature and the wind speed of each subarea in the horizontal heating device for fiber stretching provided by the embodiment are independently controlled, the temperature in the same section is more uniform, the fiber can be heated in the same equipment in a controllable subarea, the heating history of the fiber is controlled, the stretching point of the fiber can be effectively controlled, especially for the stretching process of the large-diameter monofilament, the subarea heating can enable the large-diameter monofilament to have a controllable preheating process, the instability of the stretching point caused by the nonuniform heating inside and outside the monofilament is eliminated, the inconsistency of the macromolecular structures of the sheath and the core of the monofilament is eliminated, the uniformity of the structure and the performance of the monofilament is greatly improved, and the strength and the modulus of the monofilament are improved; the device has good heat insulation capability, good heat insulation effect and energy conservation; the air outlet flow stabilizing device enables the air pressure of the fluid to be more stable, the disturbance of hot air to fibers is smaller, and the quality of the produced product is good; the highest temperature of the device can be heated to 350 ℃, so that the device is suitable for stretching most polymer fibers and has good universality; through host computer touch-sensitive screen, it is more convenient to operate, and data processing is more nimble, and production technology management is more convenient.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.