Maintenance-free tip machining system and method

Abstract

The invention relates to a maintenance-free tip machining system and method.The tip machining system comprises a device body, an air inlet system and an exhaust system, the device body comprises a furnace body, a muffle pipe and a plurality of heaters, the muffle pipe is arranged in the middle of the interior of the furnace body, and the heaters are arranged in the furnace body and symmetrically arranged on the periphery of the muffle pipe; the air inlet system comprises an air inlet pipe and an air supply device; one end of the air inlet pipe is connected with the air supply device, the other end of the air inlet pipe extends into the furnace body, and a first air inlet is formed in the air inlet pipe; an electromagnetic valve is arranged on the air inlet pipe; the exhaust system comprises an exhaust pipe and a dust treatment device, one end of the exhaust pipe is connected with the dust treatment device, the other end of the exhaust pipe extends into the furnace body, and a first exhaust port is formed in the exhaust pipe; oxidized powder in the furnace body can be cleaned in time when the dust amount in the furnace body is too high, so that the machining efficiency of the furnace body is improved, the service life of the furnace body is prolonged, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber preform tip processing, and in particular to a maintenance-free tip processing system and method. Background Art

[0002] After the optical fiber preform has been sintered, the tip of the preform needs to be processed into a taper of a specified size before the subsequent optical fiber drawing process can be carried out. After the tip processing device has been used for a certain number of times, the oxidized powder on the surface of the carbon heater and the muffle tube needs to be cleaned to ensure the heating efficiency of the furnace and avoid the occurrence of discharge in the furnace. Summary of the invention

[0003] Based on the above description, the present invention provides a maintenance-free advanced processing system and method, which can clean the oxidized powder in the furnace body in time when the dust amount in the furnace body is too high, thereby improving the processing efficiency and service life of the furnace body and reducing costs.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a maintenance-free front-end processing system, comprising a device body, an air intake system and an exhaust system, wherein the device body comprises a furnace body, a muffle tube and a plurality of heaters, wherein the muffle tube is arranged in the middle of the furnace body, and the heater is arranged in the furnace body and symmetrically arranged around the muffle tube;

[0005] The air intake system comprises an air intake pipe and an air supply device; one end of the air intake pipe is connected to the air supply device, and the other end of the air intake pipe extends into the furnace body; a first air intake port is arranged on the air intake pipe, and the first air intake port is located between the furnace body and the muffle tube; a solenoid valve is arranged on the air intake pipe;

[0006] The exhaust system includes an exhaust pipe and a dust treatment device, one end of the exhaust pipe is connected to the dust treatment device, the other end of the exhaust pipe extends into the furnace body, and a first exhaust port is provided on the exhaust pipe, and the first exhaust port is located between the furnace body and the muffle tube.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the front-end processing system also includes a dust monitoring system and a control system, wherein the dust monitoring system includes a sampling tube and a dust monitor, one end of the sampling tube is connected to the dust monitor, and the other end of the sampling tube extends into the furnace body;

[0009] The dust monitor is connected to the control system to monitor the dust concentration in the furnace and send the monitoring data to the control system; the control system is connected to the solenoid valve, and the control system is connected to the device body through the device control PC.

[0010] Furthermore, an air inlet port is provided on the muffle tube, and the air inlet port is connected to the end of the air inlet pipe through an air inlet fixing assembly; an air inlet extension pipe is provided at the end of the air inlet pipe, and the air inlet extension pipe is closed at one end close to the muffle tube, and a plurality of second air inlets are provided around the air inlet extension pipe; the air inlet extension pipe can move along the axial direction of the air inlet pipe and extend into the muffle tube, and when the air inlet extension pipe extends into the muffle tube, the second air inlet port is connected to the inside of the muffle tube.

[0011] Furthermore, a first sealing ring is provided in the end of the air intake pipe and is in close contact with the air intake extension pipe, and a second sealing ring is provided in the air intake port and is in close contact with the air intake extension pipe.

[0012] Furthermore, an exhaust port is provided on the muffle tube, and the exhaust port is connected to the end of the exhaust pipe through an exhaust fixing assembly; an exhaust extension pipe is provided at the end of the exhaust pipe, and the exhaust extension pipe is closed at one end close to the muffle tube, and a plurality of second exhaust ports are provided around the exhaust extension pipe; the exhaust extension pipe can move along the axial direction of the exhaust pipe and extend into the muffle tube, and when the exhaust extension pipe extends into the muffle tube, the second exhaust port is connected to the inside of the muffle tube.

[0013] Furthermore, a third sealing ring is disposed in the end of the exhaust pipe and is in close contact with the exhaust extension pipe, and a fourth sealing ring is disposed in the exhaust port and is in close contact with the exhaust extension pipe.

[0014] Furthermore, a pressure regulating valve is provided on the exhaust pipe.

[0015] Furthermore, a pressure buffer box is provided on the exhaust pipe, and the pressure buffer box is located between the pressure regulating valve and the dust cleaning device.

[0016] Furthermore, the first air inlet is located above the heater, and the first air outlet is located below the heater.

[0017] This embodiment also proposes a front-end processing method, using any of the front-end processing systems described above, when the amount of dust in the furnace body is higher than a predetermined concentration upper limit, the production operation in the furnace body is stopped, and the solenoid valve is opened, and an inert gas is introduced into the furnace body through an air intake system to purge the carbon powder on the surface of the muffle tube and the heater, and the dust is discharged along with the gas through an exhaust system;

[0018] When the dust amount in the furnace is lower than the preset lower limit of concentration, the solenoid valve is closed and the production operation in the furnace is restarted.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0020] The present invention can timely clean the oxidized powder in the furnace body when the dust amount in the furnace body is too high, thereby improving the processing efficiency and service life of the furnace body and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a maintenance-free front-end processing system and method provided in Embodiment 1 of the present invention;

[0022] Figure 2 A schematic diagram of the structure of a maintenance-free front-end processing system and method provided in Embodiment 2 of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the air inlet port in the second embodiment of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the exhaust port in the second embodiment of the present invention;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Device body; 11. Furnace body; 12. Muffle tube; 121. Air inlet port; 122. Second sealing ring; 123. Exhaust port; 124. Fourth sealing ring; 13. Heater; 2. Air inlet system; 21. Air inlet pipe; 211. First air inlet port; 212. Air inlet extension pipe; 213. Second air inlet port; 214. First sealing ring; 22. Solenoid valve; 23. Air supply device; 3. Exhaust system; 31. Exhaust pipe; 311. First exhaust port; 312. Exhaust extension pipe; 313. Second exhaust port; 314. Third sealing ring; 22. Pressure regulating valve; 23. Pressure buffer box; 24. Dust treatment device; 4. Dust monitoring system; 41. Sampling tube; 42. Dust monitor; 5. Control system; 6. Device control PC; 71. Air inlet fixing assembly; 72. Exhaust fixing assembly; 81. Air inlet drive device; 82. Exhaust drive device. DETAILED DESCRIPTION

[0027] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0029] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0030] Embodiment 1

[0031] A maintenance-free cutting-edge processing system, such as Figure 1 As shown, it includes a device body 1, an air intake system 2, an exhaust system 3, a dust monitoring system 4 and a control system 5.

[0032] The device body 1 comprises a furnace body 11 , a muffle tube 12 and a plurality of heaters 13 . The muffle tube 12 is arranged in the middle of the furnace body 11 . The heaters 13 are arranged in the furnace body 11 and symmetrically arranged around the muffle tube 12 .

[0033] The air intake system 2 includes an air intake pipe 21 and an air supply device 23. One end of the air intake pipe 21 is connected to the air supply device 23, and the other end of the air intake pipe 21 extends into the furnace body 11. The air intake pipe 21 is provided with a first air intake port 211, and the first air intake port 211 is located between the furnace body 11 and the muffle tube 12. The air intake pipe 21 is provided with a solenoid valve 22.

[0034] The exhaust system 3 includes an exhaust pipe 31 and a dust treatment device 24. One end of the exhaust pipe 31 is connected to the dust treatment device 24, and the other end of the exhaust pipe 31 extends into the furnace body 11. The exhaust pipe 31 is provided with a first exhaust port 311, and the first exhaust port 311 is located between the furnace body 11 and the muffle tube 12. The exhaust pipe 31 is also provided with a pressure regulating valve 22 and a pressure buffer box 23, and the pressure buffer box 23 is located between the pressure regulating valve 22 and the dust cleaning device. The pressure regulating valve 22 can be used to adjust the exhaust pipe 31 to a suitable exhaust negative pressure, and accelerate the delivery of the oxidized dust in the furnace body 11 to the dust treatment device 24 together with the gas. The pressure buffer box 23 can stabilize the exhaust negative pressure in the exhaust pipe 31 to ensure that the working process is not affected by the negative pressure fluctuation in the dust treatment device 24.

[0035] The dust monitoring system 4 includes a sampling tube 41 and a dust monitor 42. One end of the sampling tube 41 is connected to the dust monitor 42, and the other end of the sampling tube 41 extends into the furnace body 11. The dust monitor 42 is connected to the control system 5 to monitor the dust concentration in the furnace body 11 and send the monitoring data to the control system 5.

[0036] The control system 5 is connected to the electromagnetic valve 22 and the negative pressure regulating device, and is used to control the operation of the electromagnetic valve 22 and the negative pressure regulating device. The control system 5 is connected to the device body 1 through the device control PC 6, and controls the working state of the device body 1 through the device control PC 6.

[0037] The method of using this embodiment is as follows:

[0038] When the dust monitor 42 detects that the dust amount in the furnace body 11 is higher than the upper limit of the predetermined concentration, the production operation in the furnace body 11 is stopped, and the solenoid valve 22 is opened to introduce 50 slm of inert gas into the furnace body 11 through the air intake system 2 to purge the carbon powder on the surface of the muffle tube 12 and the heater 13, and the dust is discharged along with the gas through the exhaust system 3. In this embodiment, the upper limit of the predetermined concentration is 1000 / CF.

[0039] When the dust monitor 42 detects that the dust amount in the furnace body 11 is lower than the predetermined concentration lower limit, the solenoid valve 22 is closed, the purge operation is notified, and the production operation in the furnace body 11 is restarted. In this embodiment, the predetermined concentration lower limit is 500 pcs / CF.

[0040] This embodiment can clean the oxidized powder in the furnace body 11 in time when the dust content in the furnace body 11 is too high, thereby improving the processing efficiency and service life of the furnace body 11 and reducing costs.

[0041] Embodiment 2

[0042] The difference between this embodiment and the first embodiment is that Figure 2 As shown, the muffle tube 12 is provided with an air inlet port 121 and an air outlet port 123 .

[0043] like Figure 3 As shown, the muffle tube 12 is provided with an air inlet port 121, and the air inlet port 121 is connected to the end of the air inlet pipe 21 through the air inlet fixed component 71. The end of the air inlet pipe 21 is provided with an air inlet extension pipe 212, and one end of the air inlet extension pipe 212 close to the muffle tube 12 is closed, and a plurality of second air inlets 213 are provided around the air inlet extension pipe 212. The air inlet fixed component 71 is also provided with an air inlet driving device 81 for driving the air inlet extension pipe 212 to move, and the air inlet extension pipe 212 can move along the axial direction of the air inlet pipe 21 and extend into the muffle tube 12, and when the air inlet extension pipe 212 extends into the muffle tube 12, the second air inlet port 213 is connected to the inside of the muffle tube 12.

[0044] A first sealing ring 214 is disposed in the end of the air intake pipe 21 and is in close contact with the air intake extension pipe 212 . A second sealing ring 122 is disposed in the air intake port 121 and is in close contact with the air intake extension pipe 212 .

[0045] like Figure 4 As shown, the exhaust port 123 is connected to the end of the exhaust pipe 31 through the exhaust fixing assembly 72. An exhaust extension pipe 312 is provided at the end of the exhaust pipe 31. The end of the exhaust extension pipe 312 is closed near the muffle tube 12, and a plurality of second exhaust ports 313 are provided around the exhaust extension pipe 312. The exhaust fixing assembly 72 is also provided with an exhaust driving device 82 for driving the exhaust extension pipe 312 to move. The exhaust extension pipe 312 can move along the axial direction of the exhaust pipe 31 and extend into the muffle tube 12, and when the exhaust extension pipe 312 extends into the muffle tube 12, the second exhaust ports 313 are connected to the inside of the muffle tube 12.

[0046] A third sealing ring 314 is disposed in the end of the exhaust pipe 31 and is in close contact with the exhaust extension pipe 312 . A fourth sealing ring 124 is disposed in the exhaust port 123 and is in close contact with the exhaust extension pipe 312 .

[0047] During the production process, various accidental reasons may cause preform dust to fall into the muffle tube 12. However, the existing muffle tube 12 is designed to be long and the interior is at a high temperature. The fallen dust cannot be removed, causing the muffle tube 12 to be scrapped.

[0048] In this embodiment, the air intake extension pipe 212 and the scheduling extension pipe are extended into the muffle tube 12, so that the dust inside the muffle tube 12 can be regularly cleaned, and the oxidized powder on the surface of the muffle tube 12 and the surface of the heater 13 can be cleaned at the same time. When the dust detector detects that the dust amount in the furnace body 11 is higher than the preset upper limit of concentration, the temporary cleaning procedure of the oxidized powder can also be started. At this time, there is no need to extend the air intake extension pipe 212 and the scheduling extension pipe into the muffle tube 12.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A maintenance-free front-end processing system, characterized in that: The device comprises a device body, an air intake system and an exhaust system, wherein the device body comprises a furnace body, a muffle tube and a plurality of heaters, wherein the muffle tube is arranged in the middle of the furnace body, and the heaters are arranged in the furnace body and symmetrically arranged around the muffle tube; The air intake system comprises an air intake pipe and an air supply device; one end of the air intake pipe is connected to the air supply device, and the other end of the air intake pipe extends into the furnace body; a first air intake port is arranged on the air intake pipe, and the first air intake port is located between the furnace body and the muffle tube; a solenoid valve is arranged on the air intake pipe; The exhaust system includes an exhaust pipe and a dust treatment device, one end of the exhaust pipe is connected to the dust treatment device, the other end of the exhaust pipe extends into the furnace body, and a first exhaust port is provided on the exhaust pipe, and the first exhaust port is located between the furnace body and the muffle tube.

2. A maintenance-free front-end processing system according to claim 1, characterized in that: It also includes a dust monitoring system and a control system, wherein the dust monitoring system includes a sampling tube and a dust monitor, one end of the sampling tube is connected to the dust monitor, and the other end of the sampling tube extends into the furnace body; The dust monitor is connected to the control system to monitor the dust concentration in the furnace and send the monitoring data to the control system; the control system is connected to the solenoid valve, and the control system is connected to the device body through the device control PC.

3. A maintenance-free front-end processing system according to claim 1, characterized in that: An air inlet port is provided on the muffle tube, and the air inlet port is connected to the end of the air inlet pipe through an air inlet fixing component; an air inlet extension pipe is provided at the end of the air inlet pipe, the air inlet extension pipe is closed at one end close to the muffle tube, and a plurality of second air inlets are provided around the air inlet extension pipe; the air inlet extension pipe can move along the axial direction of the air inlet pipe and extend into the muffle tube, and when the air inlet extension pipe extends into the muffle tube, the second air inlet port is connected with the inside of the muffle tube.

4. A maintenance-free front-end processing system according to claim 3, characterized in that: A first sealing ring is disposed in the end of the air intake pipe and is in close contact with the air intake extension pipe. A second sealing ring is disposed in the air intake port and is in close contact with the air intake extension pipe.

5. A maintenance-free front-end processing system according to claim 1, characterized in that: The muffle tube is provided with an exhaust port, and the exhaust port is connected to the end of the exhaust pipe through an exhaust fixing assembly; the end of the exhaust pipe is provided with an exhaust extension pipe, the exhaust extension pipe is closed at one end close to the muffle tube, and a plurality of second exhaust ports are provided around the exhaust extension pipe; the exhaust extension pipe can move along the axial direction of the exhaust pipe and extend into the muffle tube, and when the exhaust extension pipe extends into the muffle tube, the second exhaust port is connected to the inside of the muffle tube.

6. A maintenance-free front-end processing system according to claim 5, characterized in that: A third sealing ring is arranged in the end of the exhaust pipe and is in close contact with the exhaust extension pipe. A fourth sealing ring is arranged in the exhaust port and is in close contact with the exhaust extension pipe.

7. A maintenance-free front-end processing system according to claim 1, characterized in that: The exhaust pipe is provided with a pressure regulating valve.

8. A maintenance-free front-end processing system according to claim 7, characterized in that: A pressure buffer box is arranged on the exhaust pipe, and the pressure buffer box is located between the pressure regulating valve and the dust cleaning device.

9. A maintenance-free front-end processing system according to claim 1, characterized in that: The first air inlet is located above the heater, and the first air outlet is located below the heater.

10. A maintenance-free tip processing method, using the tip processing system according to any one of claims 1 to 9, characterized in that: When the amount of dust in the furnace body is higher than a predetermined upper limit of concentration, the production operation in the furnace body is stopped, and the solenoid valve is opened to introduce inert gas into the furnace body through the air intake system to purge the carbon powder on the surface of the muffle tube and the heater, and the dust is discharged along with the gas through the exhaust system; When the dust amount in the furnace is lower than the preset lower limit of concentration, the solenoid valve is closed and the production operation in the furnace is restarted.

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