阅读说明：本技术 预烘干装置及具有其的玻璃纤维生产设备 (Pre-drying device and glass fiber production equipment with same ) 是由 张毓强 费建春 邓湘华 杨为发 沈连飞 姜波 于 2021-09-29 设计创作，主要内容包括：本发明提供了一种预烘干装置及具有其的玻璃纤维生产设备,预烘干装置用于对玻璃纤维的丝束进行预烘干处理,预烘干装置包括：箱体,设置在玻璃纤维的生产设备中的集束轮与拉丝机的机头之间,箱体的相对两侧分别设置有用于供丝束穿过的穿入通孔和穿出通孔；进风组件,进风组件的进风管路与箱体连接,以用于向箱体内提供气流,进风管路上设置有加热装置,以对进入箱体内的气流进行加热；出风组件,出风组件的出风管路与箱体连接,以用于使箱体内的余热气流流出箱体外部。本发明的预烘干装置解决了现有技术中的玻璃纤维的原丝筒需要在独立的烘箱系统中的停留较长时间的问题。(The invention provides a pre-drying device and glass fiber production equipment with the same, wherein the pre-drying device is used for pre-drying fiber bundles of glass fibers, and comprises: the device comprises a box body, a wire drawing machine and a control device, wherein the box body is arranged between a bundling wheel in glass fiber production equipment and a machine head of the wire drawing machine, and two opposite sides of the box body are respectively provided with a through hole for a strand to pass through and a through hole for the strand to pass through; the air inlet pipeline of the air inlet component is connected with the box body and used for providing airflow into the box body, and the air inlet pipeline is provided with a heating device for heating the airflow entering the box body; and the air outlet pipeline of the air outlet assembly is connected with the box body so as to enable residual heat air in the box body to flow out of the box body. The pre-drying device solves the problem that the glass fiber strand drum in the prior art needs to stay in an independent oven system for a long time.)

1. A pre-drying device for pre-drying a strand (100) of glass fibers, characterized in that it comprises:

the device comprises a box body (1) and a wire drawing machine (300), wherein the box body (1) is arranged between a bundling wheel (200) in the glass fiber production equipment and a machine head (301) of the wire drawing machine (300), and two opposite sides of the box body (1) are respectively provided with a through hole (11) for the wire bundle (100) to pass through and a through hole (12) for the wire bundle to pass through;

the air inlet component (2), an air inlet pipeline (21) of the air inlet component (2) is connected with the box body (1) and used for providing airflow into the box body (1), and a heating device (23) is arranged on the air inlet pipeline (21) and used for heating the airflow entering the box body (1);

air-out subassembly (3), air-out pipeline (31) of air-out subassembly (3) with box (1) are connected, in order to be used for making surplus hot gas stream in box (1) flows out box (1) outside.

2. The pre-drying device according to claim 1, wherein the air inlet component (2) and the air outlet component (3) are respectively located at two opposite sides of the box body (1), wherein,

the outlet of the air inlet pipeline (21) is used for being connected with the box body (1), and the inlet of the air inlet pipeline (21) is provided with an air inlet fan (22) so as to send air flow into the box body (1);

the inlet of the air outlet pipeline (31) is used for being connected with the box body (1), and an air outlet fan (32) is arranged on the air outlet pipeline (31) so as to draw out air flow in the box body (1).

3. A pre-drying apparatus according to claim 2, characterized in that the pre-drying apparatus comprises a return air assembly (4), a return air line (41) of the return air assembly (4) being adapted to communicate the air outlet line (31) with the air inlet line (21) for directing the air flow exiting from the air outlet line (31) to the air inlet line (21).

4. The pre-drying apparatus according to claim 3,

the air return pipeline (41) comprises a first air return pipe section (411) and a second air return pipe section (412) which are connected, the first air return pipe section (411) is used for being connected with a first air inlet pipe section (211) of the air inlet pipeline (21), and the second air return pipe section (412) is used for being connected with a second air outlet pipe section (312) of the air outlet pipeline (31);

an included angle between the gas flowing direction of the first air return pipe section (411) and the gas flowing direction of the first air inlet pipe section (211) is an acute angle.

5. A pre-drying apparatus according to claim 3, characterised in that the return air assembly (4) comprises:

the air return valve (42) is arranged at the inlet of the air return pipeline (41) and is used for controlling the opening and closing of the inlet of the air return pipeline (41) through the on-off of the air return valve (42); and/or

A one-way air valve (43) arranged at the outlet of the return air pipeline (41) to prevent the air flow on the air inlet pipeline (21) from entering the return air pipeline (41); and/or

And the dehumidifying device (44) is arranged on the air return pipeline (41) and is used for dehumidifying the airflow flowing to the air inlet pipeline (21).

6. The pre-drying apparatus as claimed in any one of claims 1 to 5, further comprising:

the humidity detection part (13) is arranged outside the box body (1) and is positioned at the position, close to the through hole (12), of the box body (1) and used for detecting the humidity of the pre-dried tows (100);

the controller (5) is respectively electrically connected with the heating device (23) and the humidity detection part (13) and is used for receiving the detection result of the humidity detection part (13) and adjusting the heating temperature of the heating device (23) according to the detection result.

7. The pre-drying apparatus according to any one of claims 1 to 5, characterized in that, inside the cabinet (1):

a temperature detection means (14) for detecting the temperature of the air flow inside the case (1);

a wind speed detection means (15) for detecting the flow speed of the air flow in the box body (1).

8. The pre-drying apparatus according to claim 7, wherein the number of the temperature detecting means (14) is at least two, at least two of the temperature detecting means (14) include a first temperature detecting means (141) provided at a side of the cabinet (1) adjacent to the air inlet duct (21) and a second temperature detecting means (142) provided at a side of the cabinet (1) adjacent to the air outlet duct (31), and the wind speed detecting means (15) is located between the first temperature detecting means (141) and the second temperature detecting means (142).

9. The pre-drying apparatus according to any one of claims 2 to 5,

the air inlet fan (22) and the through hole (12) are both positioned at the bottom of the box body (1);

the air outlet fan (32) and the penetrating through hole (11) are located at the top of the box body (1).

10. The pre-drying apparatus according to any one of claims 1 to 5,

an observation hole (16) is formed in the side wall of the box body (1) so that the tows (100) in the box body (1) can be observed through the observation hole (16); and/or

The penetrating through hole (11) and the penetrating through hole (12) are both round holes, and the value range of the aperture is 5mm to 30 mm; and/or

An air outlet valve (33) is arranged at the outlet of the air outlet pipeline (31) so as to control the opening and closing of the outlet of the air outlet pipeline (31) through the on-off of the air outlet valve (33).

11. A glass fiber production plant comprising a bundling wheel (200) and a drawing machine (300), characterized in that it further comprises a pre-drying device according to any of claims 1 to 10, said pre-drying device being located between the bundling wheel (200) and a head (301) of the drawing machine (300).

Technical Field

The invention relates to the technical field of glass fiber production, in particular to a pre-drying device and glass fiber production equipment with the same.

Background

In the production process of glass fiber strands, mineral aggregate is melted and flows out of a bushing plate, and the molten mineral aggregate is wound into a hollow cylindrical yarn cluster by a wire drawing machine after passing through a spraying system, an oiling system and a beam splitting system.

The existing drying process of the glass fiber precursor is that after wiredrawing and winding forming, a precursor fiber cylinder is hung on a trolley tile and is conveyed to an independent oven system for drying through a conveying plate chain, no device is used for pre-drying the water sprayed in the wiredrawing process, in order to ensure the drying effect, the precursor fiber cylinder without pre-drying needs to stay in the independent oven system for a long time, and the long drying time means low production efficiency and high energy consumption cost.

Disclosure of Invention

The invention mainly aims to provide a pre-drying device and glass fiber production equipment with the same, and aims to solve the problem that a glass fiber strand drum in the prior art needs to stay in an independent oven system for a long time.

In order to achieve the above object, according to one aspect of the present invention, there is provided a pre-drying device for performing a pre-drying process on a strand of glass fibers, the pre-drying device comprising: the device comprises a box body, a wire drawing machine and a control device, wherein the box body is arranged between a bundling wheel in glass fiber production equipment and a machine head of the wire drawing machine, and two opposite sides of the box body are respectively provided with a through hole for a strand to pass through and a through hole for the strand to pass through; the air inlet pipeline of the air inlet component is connected with the box body and used for providing airflow into the box body, and the air inlet pipeline is provided with a heating device for heating the airflow entering the box body; and the air outlet pipeline of the air outlet assembly is connected with the box body so as to enable residual heat air in the box body to flow out of the box body.

Furthermore, the air inlet assembly and the air outlet assembly are respectively positioned at two opposite sides of the box body, wherein the outlet of the air inlet pipeline is used for being connected with the box body, and the inlet of the air inlet pipeline is provided with an air inlet fan for feeding air flow into the box body; the inlet of the air outlet pipeline is used for being connected with the box body, and the air outlet pipeline is provided with an air outlet fan so as to draw out air flow in the box body.

Further, the pre-drying device comprises a return air assembly, and a return air pipeline of the return air assembly is used for communicating an air outlet pipeline and an air inlet pipeline so as to guide air flow flowing out of the air outlet pipeline to the air inlet pipeline.

Furthermore, the air return pipeline comprises a first air return pipe section and a second air return pipe section which are connected, the first air return pipe section is used for being connected with a first air inlet pipe section of the air inlet pipeline, and the second air return pipe section is used for being connected with a second air outlet pipe section of the air outlet pipeline; wherein, the contained angle between the gas flow direction of first return air pipeline section and the gas flow direction of first air inlet pipeline section is the acute angle.

Further, the return air subassembly includes: the return air valve is arranged at the inlet of the return air pipeline so as to control the opening and closing of the inlet of the return air pipeline through the on-off of the return air valve; and/or the one-way air valve is arranged at the outlet of the return air pipeline so as to prevent the air flow on the air inlet pipeline from entering the return air pipeline; and/or the dehumidifying device is arranged on the air return pipeline and is used for dehumidifying the airflow flowing to the air inlet pipeline.

Further, the pre-drying device further comprises: the humidity detection part is arranged outside the box body and is positioned at the position, close to the through hole, of the box body, and is used for detecting the humidity of the pre-dried tows; and the controller is respectively electrically connected with the heating device and the humidity detection component and is used for receiving the detection result of the humidity detection component and adjusting the heating temperature of the heating device according to the detection result.

Further, be provided with in the box: a temperature detection part for detecting a temperature of the air flow in the case; and the wind speed detection component is used for detecting the flow speed of the air flow in the box body.

Furthermore, the number of the temperature detection parts is at least two, the at least two temperature detection parts comprise a first temperature detection part and a second temperature detection part, the first temperature detection part is arranged on one side, close to the air inlet pipeline, of the box body, the second temperature detection part is arranged on one side, close to the air outlet pipeline, of the box body, and the air speed detection part is located between the first temperature detection part and the second temperature detection part.

Furthermore, the air inlet fan and the penetrating through hole are both positioned at the bottom of the box body; the air outlet fan and the penetrating through hole are both positioned at the top of the box body.

Furthermore, an observation hole is formed in the side wall of the box body so that the tows in the box body can be observed through the observation hole; and/or the penetrating through hole and the penetrating through hole are both round holes, and the value range of the aperture is 5mm to 30 mm; and/or an outlet of the air outlet pipeline is provided with an air outlet valve so as to control the opening and closing of the outlet of the air outlet pipeline through the on-off of the air outlet valve.

According to another aspect of the invention, a glass fiber production device is provided, which comprises a bundling wheel and a drawing machine, and the glass fiber production device further comprises the pre-drying device, wherein the pre-drying device is positioned between the bundling wheel and a head of the drawing machine.

By applying the technical scheme, the pre-drying device is used for pre-drying the tows of the glass fibers, and comprises a box body, an air inlet assembly and an air outlet assembly; the box body is arranged between a bundling wheel and a machine head of a wire drawing machine in glass fiber production equipment, and two opposite sides of the box body are respectively provided with a through hole for a strand to pass through and a through hole for the strand to pass through; an air inlet pipeline of the air inlet assembly is connected with the box body and used for providing airflow into the box body, and a heating device is arranged on the air inlet pipeline and used for heating the airflow entering the box body; the air outlet pipeline of the air outlet assembly is connected with the box body so as to enable residual heat air in the box body to flow out of the box body. Compared with the prior art, the pre-drying device can pre-dry the tows of the glass fibers after drawing and collecting before the tows are wound on the raw silk barrel, so that the aim of reducing the retention time of the raw silk barrel in an independent oven system is fulfilled, the drying time and energy required by the next process can be obviously reduced, the drying efficiency of the glass fibers is greatly improved, the total drying time of the glass fibers is reduced, the production cost of the glass fibers is reduced, the industrial production and popularization and use of the glass fibers are facilitated, and the problem that the raw silk barrel of the glass fibers in the prior art needs to stay in the independent oven system for a long time is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a pre-drying apparatus according to the present invention.

Wherein the figures include the following reference numerals:

1. a box body; 11. penetrating into the through hole; 12. penetrating out of the through hole; 13. a humidity detection part; 14. a temperature detection part; 141. a first temperature detection member; 142. a second temperature detection member; 15. a wind speed detection section; 16. an observation hole;

2. an air intake assembly; 21. an air inlet pipeline; 211. a first air inlet pipe section; 212. a second air inlet pipe section; 22. an air intake fan; 23. a heating device;

3. an air outlet assembly; 31. an air outlet pipeline; 311. a first air outlet pipe section; 312. a second air outlet pipe section; 313. a third air outlet pipe section; 32. an air outlet fan; 33. an air outlet valve;

4. an air return component; 41. a return air line; 411. a first return air duct section; 412. a second return air duct section; 42. a return air valve; 43. a one-way air valve; 44. a dehumidifying device;

5. a controller;

100. tow; 200. a cluster wheel; 300. a wire drawing machine; 301. a handpiece.

Detailed Description

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 invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, the present invention provides a pre-drying apparatus for performing a pre-drying process on a strand 100 of glass fibers, the pre-drying apparatus comprising: the device comprises a box body 1, a wire drawing machine 300 and a wire collecting wheel 200, wherein the box body is arranged between a head 301 of the wire drawing machine 300 and the wire collecting wheel 200 in glass fiber production equipment, and two opposite sides of the box body are respectively provided with a through hole 11 for allowing a wire bundle 100 to pass through and a through hole 12 for allowing the wire bundle 100 to pass through; an air inlet pipeline 21 of the air inlet component 2 is connected with the box body 1 and used for providing airflow into the box body 1, and a heating device 23 is arranged on the air inlet pipeline 21 and used for heating the airflow entering the box body 1; air-out subassembly 3, air-out pipeline 31 of air-out subassembly 3 is connected with box 1 to be used for making the surplus hot air current in the box 1 flow out the box 1 outside.

The pre-drying device is used for pre-drying the glass fiber tows 100 and comprises a box body 1, an air inlet component 2 and an air outlet component 3; the box body 1 is arranged between a bundling wheel 200 and a machine head 301 of a wire drawing machine 300 in glass fiber production equipment, and two opposite sides of the box body are respectively provided with a through hole 11 for allowing a strand 100 to pass through and a through hole 12 for allowing the strand 100 to pass through; an air inlet pipeline 21 of the air inlet component 2 is connected with the box body 1 and used for providing airflow into the box body 1, and a heating device 23 is arranged on the air inlet pipeline 21 and used for heating the airflow entering the box body 1; an air outlet pipeline 31 of the air outlet component 3 is connected with the box body 1 so as to enable residual heat air flow in the box body 1 to flow out of the box body 1. Compared with the prior art, the pre-drying device can pre-dry the tows 100 of the glass fibers after drawing and collecting before the tows 100 are wound on the raw silk cylinder, so that the aim of reducing the residence time of the raw silk cylinder in an independent oven system is fulfilled, the drying time and energy required by the next process can be obviously reduced, the drying efficiency of the glass fibers is greatly improved, the total drying time of the glass fibers is reduced, the production cost of the glass fibers is reduced, the industrial production and popularization and use of the glass fibers are facilitated, and the problem that the raw silk cylinder of the glass fibers in the prior art needs to stay in the independent oven system for a long time is solved.

In one embodiment of the invention, the air inlet component 2 and the air outlet component 3 are respectively positioned at two opposite sides of the box body 1, wherein an outlet of the air inlet pipeline 21 is used for being connected with the box body 1, and an inlet of the air inlet pipeline 21 is provided with an air inlet fan 22 for sending air flow into the box body 1; the inlet of the air outlet pipeline 31 is used for being connected with the box body 1, and the air outlet pipeline 31 is provided with an air outlet fan 32 so as to extract residual heat air in the box body 1.

Specifically, the air inlet pipeline 21 includes a first air inlet pipe section 211 and a second air inlet pipe section 212 which are connected in sequence and arranged at a predetermined included angle, one end of the first air inlet pipe section 211, which is far away from the second air inlet pipe section 212, is used for being connected with the box body 1, one end of the second air inlet pipe section 212, which is far away from the first air inlet pipe section 211, is provided with the air inlet fan 22, and the heating device 23 is installed on the second air inlet pipe section 212 and is located at the downstream of the air inlet fan 22 so as to heat the air flow input by the air inlet fan 22.

Preferably, the first intake pipe section 211 and the second intake pipe section 212 are perpendicular to each other.

Specifically, the air outlet pipeline 31 includes a first air outlet pipe section 311, a second air outlet pipe section 312 and a third air outlet pipe section 313 which are connected in sequence, and a predetermined included angle is formed between two adjacent air outlet pipe sections; one end of the first air outlet pipe section 311, which is far away from the second air outlet pipe section 312, is used for being connected with the box body 1, one end of the second air outlet pipe section 312, which is far away from the first air outlet pipe section 311, is connected with an inlet of the air outlet fan 32, one end of the third air outlet pipe section 313, which is close to the second air outlet pipe section 312, is connected with a first outlet of the air outlet fan 32, and one end of the third air outlet pipe section 313, which is far away from the air outlet fan 32, is communicated with the external environment so as to convey residual heat air flow to the external environment.

Preferably, the first outlet duct section 311 and the second outlet duct section 312 are perpendicular to each other, and the second outlet duct section 312 and the third outlet duct section 313 are perpendicular to each other.

Preferably, the pre-drying device comprises a return air assembly 4, and a return air pipeline 41 of the return air assembly 4 is used for communicating the air outlet pipeline 31 with the air inlet pipeline 21 so as to guide the airflow flowing out from the air outlet pipeline 31 to the air inlet pipeline 21. Therefore, the residual hot gas flow after pre-drying is favorably recycled, so that the energy consumption of the pre-drying device is reduced.

Specifically, the air return pipeline 41 includes a first air return pipe section 411 and a second air return pipe section 412 which are connected and arranged at a predetermined included angle, the first air return pipe section 411 is used for being connected with the first air inlet pipe section 211 of the air inlet pipeline 21, and the second air return pipe section 412 is used for being connected with the second air outlet pipe section 312 of the air outlet pipeline 31; wherein, the contained angle between the gas circulation direction of first return air pipe section 411 and the gas circulation direction of first air inlet pipe section 211 is the acute angle to guarantee that the contained angle between the inside air current flow direction of first return air pipe section 411 and the inside air current flow direction of first air inlet pipe section 211 is less than 90 degrees, thereby prevent the production of air current convection condition.

In addition, the second return air duct section 412 is connected to the second outlet of the air outlet fan 32 to be connected to the second air outlet section 312 through the air outlet fan 32, the second return air duct section 412 and the second air outlet section 312 are perpendicular to each other, the second return air duct section 412 and the third air outlet section 313 are parallel to each other, and the second return air duct section 412 and the third air outlet section 313 are respectively located at two opposite sides of the air outlet fan 32.

Preferably, in the air inlet pipeline 21, the air outlet pipeline 31 and the air return pipeline 41, a rounded corner transition is adopted at a connecting position between any two adjacent pipe sections so as to reduce airflow resistance at the corresponding connecting position.

Preferably, the return air assembly 4 includes: and a return air valve 42, wherein the return air valve 42 is arranged at the inlet of the return air pipeline 41, so that the opening and closing of the inlet of the return air pipeline 41 are controlled by the on-off of the return air valve 42.

Preferably, the return air assembly 4 includes: the one-way air valve 43, the one-way air valve 43 is disposed at the outlet of the return air pipe 41 to prevent the air flow on the air inlet pipe 21 from entering the return air pipe 41, so that the residual heat air flow sent by the air outlet fan 32 can flow into the box 1 in one direction to prevent the generation of convection.

Further preferably, the return air assembly 4 further includes: the dehumidifying device 44, the dehumidifying device 44 are disposed on the second return air pipe section 412 of the return air pipeline 41, and the dehumidifying device 44 is located between the return air valve 42 and the one-way air valve 43, so as to dehumidify the residual heat airflow flowing to the air inlet pipeline 21, so as to improve the drying degree of the residual heat airflow entering the box body 1, and further improve the pre-drying effect on the glass fiber.

As shown in fig. 1, the pre-drying apparatus further includes: the humidity detection part 13 is arranged outside the box body 1 and is positioned below the bottom of the box body 1 and close to the position penetrating through the through hole 12, and is used for detecting the humidity of the pre-dried tows 100; and the controller 5, the controller 5 is respectively electrically connected with the heating device 23 and the humidity detection part 13, and is used for receiving the detection result of the humidity detection part 13 and adjusting the heating temperature of the heating device 23 according to the detection result.

Specifically, controller 5 is PLC programmable logic controller, and humidity detection part 13 is moisture on-line measuring appearance, carries out real time monitoring through setting up PLC and moisture on-line measuring appearance in order to carry out the drying degree to glass fiber's silk bundle 100, is favorable to improving the intelligent and degree of automation of stoving process to improve the drying efficiency to glass fiber's silk bundle 100.

As shown in fig. 1, the case 1 is provided therein with: a temperature detection part 14 for detecting the temperature of the air flow inside the case 1; a wind speed detecting part 15 for detecting a flow speed of the air flow in the case 1. The drying temperature and the drying wind speed of the glass fiber can be monitored in real time by arranging the temperature detection part 14 and the wind speed detection part 15, so that real-time adjustment can be conveniently carried out.

Preferably, the number of the temperature detecting parts 14 is at least two, and the at least two temperature detecting parts 14 include a first temperature detecting part 141 arranged on one side of the box body 1 close to the air inlet pipeline 21 and a second temperature detecting part 142 arranged on one side of the box body 1 close to the air outlet pipeline 31, so as to be respectively used for detecting the temperature at different positions in the box body 1, so that the detection of the baking temperature is more accurate and reliable, and the quality of the pre-drying treatment of the glass fiber is further improved; in addition, the number of the wind speed detecting members 15 is one, one wind speed detecting member 15 is located between the first temperature detecting member 141 and the second temperature detecting member 142, and the wind speed detecting member 15 is located at the middle portion in the cabinet 1 for detecting the flow rate of the air current at the middle portion in the cabinet 1.

Specifically, the temperature detecting member 14 may be a thermocouple, and the wind speed detecting member 15 may be a wind speed detector.

The air inlet fan 22 and the through hole 12 are both positioned at the bottom of the box body 1; the air outlet fan 32 and the penetrating through hole 11 are both positioned at the top of the box body 1. Therefore, the drying hot air flows upwards from the bottom of the box body 1 and flows out from the top of the box body 1, the fiber bundles 100 of the glass fibers penetrate from the top of the box body 1 and penetrate out from the bottom of the box body 1 to form a countercurrent baking effect, the flowing direction of the hot air flow is conformed, the energy consumption of the pre-drying device is reduced, the high-temperature drying air flow can be firstly contacted with the fiber bundles 100 penetrating out of the through holes 12, and the pre-drying treatment effect on the glass fibers is favorably improved.

As shown in fig. 1, a viewing hole 16 is provided on a side wall of the box 1 to view the tow 100 in the box 1 through the viewing hole 16; wherein the viewing aperture 16 is provided in the side wall between the bottom and the top of the case 1.

Preferably, the penetrating through hole 11 and the penetrating through hole 12 are both round holes and the aperture ranges from 5mm to 30 mm. If the diameters of the through holes 11 and 12 are too small, the glass fibers are scratched, and if the diameters of the through holes 11 and 12 are too large, hot air flows out of the holes easily, which is not beneficial to controlling the energy consumption of the pre-drying device; therefore, the aperture of the through hole 11 and the aperture of the through hole 12 are set between 5mm and 30mm, which can not only ensure that the glass fiber is not easy to scratch, but also control the energy consumption of the pre-drying device.

Preferably, an air outlet valve 33 is disposed at the outlet of the air outlet pipe 31, so that the opening and closing of the outlet of the air outlet pipe 31 are controlled by the on and off of the air outlet valve 33. The air outlet valve 33 is disposed on the third air outlet pipe section 313 of the air outlet pipeline 31, and is used for controlling on/off of the third air outlet pipe section 313 to prevent impurities such as dust from entering the air outlet pipeline 31, and the air outlet valve 33 can be matched with the air return valve 42 to control the flow direction of the air flow in the air outlet pipeline 31.

In addition, in addition to the heating device 23 and the humidity detection part 13, the controller 5 of the present invention may be electrically connected to the intake fan 22, the exhaust fan 32, the return valve 42, the dehumidifying device 44, the temperature detection part 14, the wind speed detection part 15, and the exhaust valve 33, etc. to control their operating states.

The working principle of the pre-drying device is as follows:

(1) opening the return air valve 42 and closing the air outlet valve 33;

(2) sequentially starting the power supplies of the air outlet fan 32, the air inlet fan 22, the controller 5 and the heating device 23;

(3) the working frequencies of the air outlet fan 32 and the air inlet fan 22, the heating temperature of the heating device 23 and the like are adjusted through the controller 5 so as to correspond to the pre-drying process of the corresponding glass fiber variety;

(4) one end of the filament bundle 100 sequentially passes through the through hole 11 and the through hole 12 of the box body 1 and is finally wound on a raw filament tube of the machine head 301;

(5) after the filament bundle 100 is wound on the raw filament tube, the raw filament tube is unloaded from the machine head 301 and hung on a corresponding transport trolley;

(6) in the production process, the temperature detection part 14 and the air speed detection part 15 are used for monitoring the drying condition of the tows 100 in the box body 1 so as to ensure that the process of the pre-drying treatment meets the specified process standard of the corresponding glass fiber product;

(7) finally, the base yarn tube with the pre-dried tow 100 is transported to a separate oven for final drying by a transport cart.

The shutdown steps of the pre-drying device of the invention are as follows:

(1) the tows 100 are moved out of the box 1;

(2) opening the air outlet valve 33 and closing the air return valve 42;

(3) the power supply of the heating device 23, the controller 5 and the air inlet fan 22 is turned off in sequence;

(4) and when the temperature in the box body 1 is reduced to be the same as the outside room temperature, the power supply of the air outlet fan 32 is turned off to complete the shutdown.

The invention also provides glass fiber production equipment which comprises the bundling wheel 200 and the drawing machine 300, and the glass fiber production equipment also comprises the pre-drying device, wherein the bundling wheel 200 is used for gathering a plurality of glass fibers into one strand 100, a raw silk drum for winding the strand 100 is installed on a machine head 301 of the drawing machine 300, and the pre-drying device is positioned between the bundling wheel 200 and the machine head 301.

As shown in table 1 below, the drying condition and the energy consumption condition of the filament bundle 100 are compared between one embodiment of the glass fiber production apparatus of the present invention and a comparative example of a glass fiber production apparatus in the prior art, wherein the comparative example of the prior art employs a glass fiber production apparatus in the prior art, that is, a pre-drying device which does not perform pre-drying treatment on the filament bundle 100, and only uses a separate oven to perform drying treatment on a raw filament tube on which the filament bundle 100 is wound.

TABLE 1 comparison of baking and energy consumption profiles for examples of the invention and comparative examples of the prior art

Item	Examples of the invention	Comparative example of the prior art
			Whether to pre-dry	Is that	Whether or not
Moisture content of prebaked crude fiber tube (%)	3-7	10
			Predrying ton yarn energy consumption (Yuan)	15-35	0
Average pre-drying ton yarn energy consumption (Yuan)	25	0
			Moisture content of independently dried crude silk tube (%)	0.04	0.04
Independent baking time (h)	4.5～10.5	15
			Energy consumption of independent baking ton yarn (Yuan)	21-49	70
Average independent drying ton yarn energy consumption (Yuan)	35	70
			Average baking time (h)	7.5	15
Average total ton yarn energy consumption (Yuan)	60	70

As can be seen from table 1 above, on the premise of ensuring consistent baking effect on glass fibers, the embodiment of the present invention can averagely save 7.5 hours of baking time, improve 50% of production efficiency, averagely reduce 10 yuan of energy consumption per ton of yarn, and averagely save 14% of direct production cost compared with the comparative example. Therefore, the pre-drying device can effectively improve the production efficiency of the glass fiber and remarkably reduce the production cost of the glass fiber.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the pre-drying device is used for pre-drying the glass fiber tows 100 and comprises a box body 1, an air inlet component 2 and an air outlet component 3; the box body 1 is arranged between a bundling wheel 200 and a machine head 301 of a wire drawing machine 300 in glass fiber production equipment, and two opposite sides of the box body are respectively provided with a through hole 11 for allowing a strand 100 to pass through and a through hole 12 for allowing the strand 100 to pass through; an air inlet pipeline 21 of the air inlet component 2 is connected with the box body 1 and used for providing airflow into the box body 1, and a heating device 23 is arranged on the air inlet pipeline 21 and used for heating the airflow entering the box body 1; an air outlet pipeline 31 of the air outlet component 3 is connected with the box body 1 so as to enable residual heat air flow in the box body 1 to flow out of the box body 1. Compared with the prior art, the pre-drying device can pre-dry the tows 100 of the glass fibers after drawing and collecting before the tows 100 are wound on the raw silk cylinder, so that the aim of reducing the residence time of the raw silk cylinder in an independent oven system is fulfilled, the drying time and energy required by the next process can be obviously reduced, the drying efficiency of the glass fibers is greatly improved, the total drying time of the glass fibers is reduced, the production cost of the glass fibers is reduced, the industrial production and popularization and use of the glass fibers are facilitated, and the problem that the raw silk cylinder of the glass fibers in the prior art needs to stay in the independent oven system for a long time is solved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.