Maintenance-free tip machining system

Abstract

The utility model relates to a maintenance-free tip processing system, which comprises a device body, an air inlet system and an exhaust system, the device body comprises a furnace body, a muffle tube and a plurality of heaters, the muffle tube is arranged in the middle of the furnace body, and the heaters are arranged in the furnace body and symmetrically arranged on the periphery of the muffle tube; 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 capacity in the furnace body is too high, so that the processing 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 utility model relates to the technical field of optical fiber preform tip processing, in particular to a maintenance-free tip processing system. Background Art

[0002] After the optical fiber preform undergoes the sintering process, the tip of the preform must be processed into a tapered shape of specified dimensions before proceeding to the fiber drawing process. After a certain number of uses, the tip processing device needs to be cleaned of oxidized powder from the carbon heater and muffle tube surfaces to ensure furnace heating efficiency and prevent discharges within the furnace. Utility Model Content

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

[0004] The utility model solves the above-mentioned technical problems with the following technical solutions: 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 heaters are arranged in the furnace body and symmetrically arranged around the muffle tube;

[0005] The air intake system includes 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; the air intake pipe is provided with a first air intake port, and the first air intake port is located between the furnace body and the muffle tube; the air intake pipe is provided with a solenoid valve;

[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, and the other end of the exhaust pipe extends into the furnace body. 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] On the basis of 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. 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 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 provided in the end of the exhaust pipe and is in close contact with the exhaust extension pipe, and a fourth sealing ring is provided 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 processing device.

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

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0018] The utility model 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a maintenance-free front-end processing system and method provided in Example 1 of the present utility model;

[0020] Figure 2 A schematic structural diagram of a maintenance-free front-end processing system and method provided in the second embodiment of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the air inlet port in the second embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the exhaust port in the second embodiment of the present utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 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; 32. Pressure regulating valve; 33. Pressure buffer box; 34. Dust handling 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

[0025] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0026] 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 pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0027] It will be understood that spatial relational terms such as "under," "beneath," "beneath," "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 understood that in addition to the orientations shown in the figures, spatial relational terms also include different orientations of the device in use and operation. For example, if the device in the drawings is turned over, the element or feature described as "under" or "beneath" or "beneath" the other elements will be oriented as "over" the other elements or features. Thus, the exemplary terms "under" and "under" may include both the above and below orientations. In addition, the device may also include alternative orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0028] Example 1

[0029] 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.

[0030] The device body 1 includes 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 .

[0031] 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 inlet 211, which is located between the furnace body 11 and the muffle tube 12. The air intake pipe 21 is provided with a solenoid valve 22.

[0032] The exhaust system 3 includes an exhaust pipe 31 and a dust treatment device 34. One end of the exhaust pipe 31 is connected to the dust treatment device 34, 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, which is located between the furnace body 11 and the muffle tube 12. The exhaust pipe 31 is also provided with a pressure regulating valve 32 and a pressure buffer tank 33, which is located between the pressure regulating valve 32 and the dust treatment device 34. The pressure regulating valve 32 can be used to adjust the exhaust pipe 31 to an appropriate negative exhaust pressure, accelerating the transport of oxidized dust from the furnace body 11 to the dust treatment device 34 along with the gas. The pressure buffer tank 33 stabilizes the negative exhaust pressure in the exhaust pipe 31, ensuring that the operating process is not affected by fluctuations in the negative pressure in the dust treatment device 34.

[0033] Dust monitoring system 4 includes a sampling tube 41 and a dust monitor 42. One end of sampling tube 41 is connected to dust monitor 42, and the other end of sampling tube 41 extends into furnace body 11. Dust monitor 42 is connected to control system 5 to monitor the dust concentration in furnace body 11 and transmit the monitoring data to control system 5.

[0034] The control system 5 is connected to the electromagnetic valve 22 and the negative pressure regulating device 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 to control the working state of the device body 1 through the device control PC 6.

[0035] The method of using this embodiment is as follows:

[0036] When dust monitor 42 detects that the dust level within furnace body 11 exceeds a predetermined upper limit, production within furnace body 11 is halted, solenoid valve 22 is opened, and inert gas is introduced into furnace body 11 at a rate of 50 slm via intake system 2 to purge carbon dust from the surfaces of muffle tube 12 and heater 13. The dust is then discharged along with the gas through exhaust system 3. In this embodiment, the predetermined upper limit is 1000 particles / CF.

[0037] When the dust monitor 42 detects that the dust concentration in the furnace body 11 is lower than the predetermined 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 lower limit is 500 particles / CF.

[0038] 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.

[0039] Example 2

[0040] 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 .

[0041] like Figure 3 As shown, the muffle tube 12 is provided with an air inlet port 121, which is connected to the end of the air inlet pipe 21 via an air inlet fixed assembly 71. An air inlet extension tube 212 is provided at the end of the air inlet pipe 21. The end of the air inlet extension tube 212 is closed near the muffle tube 12, and a plurality of second air inlet ports 213 are provided around the air inlet extension tube 212. The air inlet fixed assembly 71 is also provided with an air inlet drive device 81 that drives the air inlet extension tube 212. The air inlet extension tube 212 can move axially along the air inlet pipe 21 and extend into the muffle tube 12. When the air inlet extension tube 212 extends into the muffle tube 12, the second air inlet ports 213 communicate with the interior of the muffle tube 12.

[0042] A first sealing ring 214 is provided at 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 provided in the air intake port 121 and is in close contact with the air intake extension pipe 212 .

[0043] like Figure 4 As shown, the exhaust port 123 is connected to the end of the exhaust pipe 31 via 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 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 drive device 82 that drives the exhaust extension pipe 312. The exhaust extension pipe 312 can move axially along the exhaust pipe 31 and extend into the muffle 12. When the exhaust extension pipe 312 extends into the muffle 12, the second exhaust ports 313 communicate with the interior of the muffle 12.

[0044] A third sealing ring 314 is provided 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 provided in the exhaust port 123 and is in close contact with the exhaust extension pipe 312 .

[0045] 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 in a high-temperature state. The fallen dust cannot be removed, causing the muffle tube 12 to be scrapped.

[0046] In the second embodiment of the present invention, 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 predetermined concentration upper limit, the temporary cleaning procedure for 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.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection 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. The device body comprises a furnace body, a muffle tube and a plurality of heaters. The muffle tube is arranged in the middle of the furnace body. The heaters are arranged in the furnace body and symmetrically arranged around the muffle tube. The air intake system includes 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; the air intake pipe is provided with a first air intake port, and the first air intake port is located between the furnace body and the muffle tube; the air intake pipe is provided with a solenoid valve; 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, and the other end of the exhaust pipe extends into the furnace body. 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 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 is connected to 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 provided in the end of the air intake pipe and is in close contact with the air intake extension pipe. A second sealing ring is provided 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, which 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 interior of the muffle tube.

6. A maintenance-free front-end processing system according to claim 5, characterized in that: A third sealing ring is provided in the end of the exhaust pipe and is in close contact with the exhaust extension pipe. A fourth sealing ring is provided 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 provided on the exhaust pipe, and the pressure buffer box is located between the pressure regulating valve and the dust processing 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.

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