阅读说明：本技术 一种用于光纤氘处理的设备 (Equipment for deuterium treatment of optical fiber ) 是由 汪罗刚 王佩豪 于 2021-09-02 设计创作，主要内容包括：本申请公开了一种用于光纤氘处理的设备,包括：氘处理罐,具有贯穿孔；光纤盘安放架,光纤盘安放架沿设定方向进入氘处理罐；锥形罩,固定在氘处理罐的内部,锥形罩用于引导来自光纤盘的光纤进入贯穿孔；引导输送机构,设置在光纤盘安放架上,用于使光纤盘的光纤沿设定方向输送；密封机构,设置在氘处理罐的外侧,与贯穿孔相对应,用于在进行氘处理时,防止气体通过贯穿孔流入或流出氘处理罐；切割机构,设置在密封机构的外侧,用于截断光纤。本申请能够在线检测,相对于现有技术在氘处理完后,将光纤盘从氘处理罐取出后检测而言,能够提高氘处理的成功率,提高生产效率,节约成本。(The application discloses equipment for optic fibre deuterium is handled includes: a deuterium treating tank having a through hole; the optical fiber disc placing frame enters the deuterium processing tank along a set direction; the conical cover is fixed inside the deuterium processing tank and used for guiding the optical fibers from the optical fiber disc into the through hole; the guiding and conveying mechanism is arranged on the optical fiber disc placing frame and is used for conveying the optical fibers of the optical fiber disc along a set direction; a sealing mechanism disposed outside the deuterium processing tank and corresponding to the through hole for preventing gas from flowing into or out of the deuterium processing tank through the through hole when deuterium processing is performed; and the cutting mechanism is arranged on the outer side of the sealing mechanism and is used for cutting off the optical fiber. This application can on-line measuring, for prior art after deuterium is handled, take out the back with the fiber optic disc from deuterium processing tank and detect, can improve deuterium processing's success rate, improve production efficiency, practice thrift the cost.)

1. An apparatus for deuterium processing of an optical fiber, comprising:

the deuterium processing tank is provided with at least one through hole for the optical fiber to pass through, and a first guide structure is arranged inside the deuterium processing tank;

the optical fiber disc placing frame is used for being placed in the deuterium processing tank, a second guide structure matched with the first guide structure is arranged on the optical fiber disc placing frame, and the first guide structure and the second guide structure are matched with each other and used for enabling the optical fiber disc placing frame to enter the deuterium processing tank along a set direction;

the conical cover is fixed in the deuterium processing tank and is coaxially arranged with the corresponding through hole, and the conical cover is used for guiding the optical fiber from the optical fiber disc to enter the through hole;

the guiding and conveying mechanism is arranged on the optical fiber tray placing frame and is used for being matched with an optical fiber tray to convey optical fibers of the optical fiber tray along a set direction; after the optical fiber disc placing frame is placed in the deuterium processing tank, the guide conveying mechanism is used for enabling the optical fibers of the optical fiber disc to move towards the corresponding conical cover;

a sealing mechanism disposed outside the deuterium processing tank, corresponding to the through hole, for preventing gas from flowing into or out of the deuterium processing tank through the through hole when deuterium processing is performed;

and the cutting mechanism is arranged on the outer side of the sealing mechanism and is used for cutting off the optical fiber.

2. The apparatus for deuterium processing of an optical fiber according to claim 1, wherein said first guide structure comprises one guide groove provided on an upper side wall of the deuterium processing tank and a plurality of guide grooves provided on a lower side wall of the deuterium processing tank; the second guide structure comprises a plurality of guide wheels arranged on the optical fiber disc placing frame, and the guide wheels are matched with the corresponding guide grooves.

3. The apparatus for deuterium processing of an optical fiber according to claim 1, wherein the guiding and transporting mechanism comprises:

the two parallel roll shafts are arranged on the optical fiber disc placing frame and used for supporting the lower part of the optical fiber disc;

the two limiting plates are fixed on the optical fiber disc placing frame at intervals, and the corresponding optical fiber disc is positioned between the two limiting plates;

the anti-falling element is fixed on the limiting plates and comprises a movable rod capable of electrically stretching, the movable rod is provided with a contraction position and an extension position, when the movable rod is in the extension position, the movable rod extends into the shaft hole of the corresponding optical fiber disc, the optical fiber disc is limited, when the movable rod is in the contraction position, the movable rod does not extend into the shaft hole of the optical fiber disc, and the optical fiber disc can be placed into or taken out of the two limiting plates;

the two limiting pipes are coaxially arranged and distributed at intervals, and are used for the penetration of optical fibers;

and the active conveying assembly is positioned between the two limiting pipes and is used for being matched with the optical fibers to drive the optical fibers to move.

4. The apparatus for deuterium processing of an optical fiber according to claim 3, wherein the active transport assembly comprises:

a driving wheel;

the driving motor is used for driving the driving wheel to rotate;

the pressing wheel is positioned above the driving wheel, and the driving wheel and the pressure are respectively positioned at the upper side and the lower side of the optical fiber;

and the first telescopic element is used for driving the pressing wheel to move downwards so that the optical fiber is clamped between the driving wheel and the pressing wheel.

5. The apparatus for deuterium treatment of an optical fiber according to claim 4, wherein said anti-drop element is an electromagnet or an electric push rod; the first telescopic element is an electromagnet or an electric push rod.

6. The apparatus for deuterium processing of an optical fiber according to claim 1, wherein the sealing mechanism comprises:

a hollow cylindrical part fixed on the deuterium treatment tank and coaxial with the through hole;

the flexible sealing sleeve is sleeved at the bottom of the cylindrical part in an inner sleeving mode and has an initial state and a pressed state, the inner diameter of the flexible sealing sleeve is larger than the outer diameter of the optical fiber in the initial state, and the inner diameter of the flexible sealing sleeve is smaller than or equal to the outer diameter of the optical fiber in the pressed state;

the compression ring is positioned in the cylindrical part and is abutted against the end face of the flexible sealing sleeve;

the hollow anti-falling cover is in threaded connection with the end part of the cylindrical part and is provided with an avoidance hole;

a second telescopic element located outside the cylindrical part;

and one end of the transmission rod is fixed with the pressing ring, the other end of the transmission rod penetrates through the avoidance hole and then is connected with the second telescopic element, and the second telescopic element is used for controlling the state of the flexible sealing sleeve.

7. The apparatus for deuterium treatment of an optical fiber according to claim 6, wherein said second telescopic element has two, symmetrically disposed about the cylindrical portion; the second telescopic element is an electric push rod.

8. The apparatus for deuterium treatment of an optical fiber according to claim 6, wherein the anti-drop cover has a hollow extension for the optical fiber to pass through.

9. The apparatus for deuterium processing of an optical fiber according to claim 8, wherein the cutting mechanism comprises:

the backing plate is positioned above the optical fiber coming out of the extension part;

a cutting blade positioned above the backing plate;

and the cutting element is used for driving the cutting blade to move up and down and cutting the optical fiber, and the cutting element is an electromagnet, an air cylinder or an electric push rod.

10. The apparatus for deuterium processing of an optical fiber according to claim 9, wherein the cutting mechanism further comprises:

the waste box is positioned below the base plate;

the fan is fixed on the backing plate and is located the oblique below of cutting blade, the fan is used for blowing off the optic fibre of cuting from the backing plate, falls into in the garbage bin.

Technical Field

The invention relates to the field of optical fiber equipment, in particular to equipment for deuterium treatment of optical fibers.

Background

And carrying out processes of wire drawing, cooling, coating and curing on the prefabricated rod to obtain the optical fiber. When manufacturing an optical fiber, the optical fiber may contain OH groups due to a heat source or impurities in raw materials used to manufacture the optical fiber. In high energy radiation, the content of OH groups may increase, leading to increased loss of the fiber in the E band (1360nm-1460 nm). The losses are even more severe when the fiber is exposed to hydrogen. . The increase in fiber loss due to hydrogen as a function of time is known as "hydrogen aging loss", which can cause serious problems when the fiber is used for a longer period of time.

In order to solve the above problems, a technique of replacing OH groups contained in an optical fiber with OD groups has been proposed. This involves exposing the fiber to deuterium gas. Since such a substitution reaction is an irreversible reaction, OH groups are not formed in the optical fiber treated with deuterium even if the optical fiber is exposed to hydrogen gas later.

In the existing manufacturing process, deuterium treatment is divided into two parts, namely, an optical fiber is placed in a deuterium treatment tank and then deuterium treatment is carried out; and secondly, detecting the processed optical fiber and testing whether the deuterium processing is qualified. The existing manufacturing process can not detect the optical fiber on line and can be carried out only after deuterium treatment is finished, the efficiency is low, and the optical fiber can have the problem of more or less deuterium filling.

Disclosure of Invention

The invention aims at the problems and provides equipment for deuterium treatment of optical fibers.

The technical scheme adopted by the invention is as follows:

an apparatus for deuterium processing of an optical fiber, comprising:

the deuterium processing tank is provided with at least one through hole for the optical fiber to pass through, and a first guide structure is arranged inside the deuterium processing tank;

the optical fiber disc placing frame is used for being placed in the deuterium processing tank, a second guide structure matched with the first guide structure is arranged on the optical fiber disc placing frame, and the first guide structure and the second guide structure are matched with each other and used for enabling the optical fiber disc placing frame to enter the deuterium processing tank along a set direction;

the conical cover is fixed in the deuterium processing tank and is coaxially arranged with the corresponding through hole, and the conical cover is used for guiding the optical fiber from the optical fiber disc to enter the through hole;

the guiding and conveying mechanism is arranged on the optical fiber tray placing frame and is used for being matched with an optical fiber tray to convey optical fibers of the optical fiber tray along a set direction; after the optical fiber disc placing frame is placed in the deuterium processing tank, the guide conveying mechanism is used for enabling the optical fibers of the optical fiber disc to move towards the corresponding conical cover;

a sealing mechanism disposed outside the deuterium processing tank, corresponding to the through hole, for preventing gas from flowing into or out of the deuterium processing tank through the through hole when deuterium processing is performed;

and the cutting mechanism is arranged on the outer side of the sealing mechanism and is used for cutting off the optical fiber.

The working principle of the equipment for deuterium treatment of the optical fiber is as follows: placing the optical fiber disc on an optical fiber disc placing frame, wherein the optical fiber disc matched with the guiding and conveying mechanism is used for online detection, and the optical fiber disc placing frame enters the deuterium processing tank along a set direction through mutual matching of the first guide structure and the second guide structure, so that the guiding and conveying mechanism can enable optical fibers of the optical fiber disc to move towards a corresponding conical cover after the optical fiber disc placing frame moves in place, and reliably enable the optical fibers to penetrate through holes of the deuterium processing tank; before deuterium treatment, one end of the optical fiber penetrates through the sealing mechanism, then the deuterium treatment tank is closed, deuterium treatment operation is carried out according to process steps, online detection is carried out after set time, if detection is qualified, deuterium treatment is finished, the optical fiber disc placing frame can be taken out, and if detection is unqualified, deuterium treatment operation is continued. The online detection steps are as follows: the sealing mechanism is released to guide the conveying mechanism to work, the optical fiber is further moved to one side of the deuterium processing tank, the optical fiber part which does not participate in deuterium processing before is cut off through the cutting mechanism, and then an operator butt joints the detection fiber and the optical fiber through the connector (the detection fiber is connected with detection equipment), so that detection can be directly carried out.

This application can on-line measuring, for prior art after deuterium is handled, take out the back with the fiber optic disc from deuterium processing tank and detect, can improve deuterium processing's success rate, improve production efficiency, practice thrift the cost.

In one embodiment of the present invention, the first guide structure comprises a guide groove disposed on the upper sidewall of the deuterium processing tank and a plurality of guide grooves disposed on the lower sidewall of the deuterium processing tank; the second guide structure comprises a plurality of guide wheels arranged on the optical fiber disc placing frame, and the guide wheels are matched with the corresponding guide grooves.

In one embodiment of the present invention, the guiding and conveying mechanism includes:

the two parallel roll shafts are arranged on the optical fiber disc placing frame and used for supporting the lower part of the optical fiber disc;

the two limiting plates are fixed on the optical fiber disc placing frame at intervals, and the corresponding optical fiber disc is positioned between the two limiting plates;

the anti-falling element is fixed on the limiting plates and comprises a movable rod capable of electrically stretching, the movable rod is provided with a contraction position and an extension position, when the movable rod is in the extension position, the movable rod extends into the shaft hole of the corresponding optical fiber disc, the optical fiber disc is limited, when the movable rod is in the contraction position, the movable rod does not extend into the shaft hole of the optical fiber disc, and the optical fiber disc can be placed into or taken out of the two limiting plates;

the two limiting pipes are coaxially arranged and distributed at intervals, and are used for the penetration of optical fibers;

and the active conveying assembly is positioned between the two limiting pipes and is used for being matched with the optical fibers to drive the optical fibers to move.

The initiative conveyor components during operation can make optic fibre remove along the axis direction of two spacing pipes, and because the setting of roller, optic fibre can be normal roll out from the optical fiber dish, can effectively prevent to break away from the optical fiber dish dispenser when the optical fiber dish rotates through setting up the anticreep component.

In one embodiment of the present invention, the active transport assembly includes:

a driving wheel;

the driving motor is used for driving the driving wheel to rotate;

the pressing wheel is positioned above the driving wheel, and the driving wheel and the pressure are respectively positioned at the upper side and the lower side of the optical fiber;

and the first telescopic element is used for driving the pressing wheel to move downwards so that the optical fiber is clamped between the driving wheel and the pressing wheel.

In practice, at least one of the pressing wheel and the driving wheel is preferably an elastic wheel.

In one embodiment of the present invention, the anti-dropping element is an electromagnet or an electric push rod; the first telescopic element is an electromagnet or an electric push rod.

In one embodiment of the present invention, the sealing mechanism includes:

a hollow cylindrical part fixed on the deuterium treatment tank and coaxial with the through hole;

the flexible sealing sleeve is sleeved at the bottom of the cylindrical part in an inner sleeving mode and has an initial state and a pressed state, the inner diameter of the flexible sealing sleeve is larger than the outer diameter of the optical fiber in the initial state, and the inner diameter of the flexible sealing sleeve is smaller than or equal to the outer diameter of the optical fiber in the pressed state;

the compression ring is positioned in the cylindrical part and is abutted against the end face of the flexible sealing sleeve;

the hollow anti-falling cover is in threaded connection with the end part of the cylindrical part and is provided with an avoidance hole;

a second telescopic element located outside the cylindrical part;

and one end of the transmission rod is fixed with the pressing ring, the other end of the transmission rod penetrates through the avoidance hole and then is connected with the second telescopic element, and the second telescopic element is used for controlling the state of the flexible sealing sleeve.

The working principle of the sealing mechanism is as follows: when the second telescopic element does not work, the optical fiber can enter the cylindrical part through the through hole and sequentially passes through the flexible sealing sleeve, the pressure ring and the anti-falling cover, a gap exists at the moment, and gas can easily flow into or out of the deuterium processing tank through the through hole under the action of pressure difference; when the second telescopic element works, the compression ring compresses the flexible sealing sleeve, the flexible sealing sleeve is switched to a compression state from an initial state, the flexible sealing sleeve deforms, the hollow part of the flexible sealing sleeve clamps the optical fiber, a good sealing effect is achieved at the moment, and gas can not flow into or out of deuterium through the through hole for treatment.

In one embodiment of the present invention, two of the second telescopic elements are symmetrically disposed about the cylindrical portion; the second telescopic element is an electric push rod.

By the arrangement, the pressure ring is stressed uniformly and reliably.

In an embodiment of the present invention, the anti-drop cover has a hollow extension portion, and the extension portion is used for passing an optical fiber.

In one embodiment of the present invention, the cutting mechanism includes:

the backing plate is positioned above the optical fiber coming out of the extension part;

a cutting blade positioned above the backing plate;

and the cutting element is used for driving the cutting blade to move up and down and cutting the optical fiber, and the cutting element is an electromagnet, an air cylinder or an electric push rod.

In one embodiment of the present invention, the cutting mechanism further includes:

the waste box is positioned below the base plate;

the fan is fixed on the backing plate and is located the oblique below of cutting blade, the fan is used for blowing off the optic fibre of cuting from the backing plate, falls into in the garbage bin.

The invention has the beneficial effects that: this application can on-line measuring, for prior art after deuterium is handled, take out the back with the fiber optic disc from deuterium processing tank and detect, can improve deuterium processing's success rate, improve production efficiency, practice thrift the cost.

Description of the drawings:

FIG. 1 is a schematic view of a fiber optic tray mounting rack after placement in a deuterium treatment canister;

FIG. 2 is a schematic view of the guide conveyor mechanism and the conical shroud;

FIG. 3 is a schematic diagram of a partial structure of an apparatus for deuterium treatment of an optical fiber;

FIG. 4 is a top view of a partial structure of an apparatus for deuterium treatment of an optical fiber;

FIG. 5 is a sectional view A-A of FIG. 4;

FIG. 6 is a schematic view of the barrel and flexible sealing boot;

FIG. 7 is a schematic view of the barrel, flexible gland, compression ring, drive rod and second telescoping member;

fig. 8 is a schematic view of fig. 7 with the drop-off prevention cover installed.

The figures are numbered:

1. a deuterium treating tank; 2. a through hole; 3. an optical fiber tray placing frame; 4. a conical cover; 5. a guide conveying mechanism; 6. a sealing mechanism; 7. a cutting mechanism; 8. an optical fiber; 9. a guide groove; 10. a guide wheel; 11. a roll shaft; 12. a limiting plate; 13. an anti-drop element; 14. a movable rod; 15. a shaft hole; 16. a limiting pipe; 17. an active transport assembly; 18. a driving wheel; 19. a drive motor; 20. a pinch roller; 21. a first telescopic element; 22. a cylindrical portion; 23. a flexible sealing sleeve; 24. pressing a ring; 25. an anti-drop cover; 26. avoiding holes; 27. a second telescoping member; 28. a transmission rod; 29. an extension portion; 30. a base plate; 31. a cutting blade; 32. a cutting element; 33. a waste bin; 34. a fan; 35. an optical fiber reel.

The specific implementation mode is as follows:

the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, an apparatus for deuterium processing of an optical fiber, comprising:

the deuterium treatment tank 1 is characterized in that the left side wall or the right side wall of the deuterium treatment tank 1 is provided with at least one through hole 2 for the optical fiber 8 to pass through, and a first guide structure is arranged inside the deuterium treatment tank 1;

the optical fiber disc placing frame 3 is used for being placed in the deuterium processing tank 1, a second guide structure matched with the first guide structure is arranged on the optical fiber disc placing frame 3, and the first guide structure and the second guide structure are matched with each other and used for enabling the optical fiber disc placing frame 3 to enter the deuterium processing tank 1 along a set direction;

the conical cover 4 is fixed in the deuterium processing tank 1 and is coaxially arranged with the corresponding through hole 2, and the conical cover 4 is used for guiding the optical fiber 8 from the optical fiber disc 35 to enter the through hole 2;

the guiding and conveying mechanism 5 is arranged on the optical fiber tray placing frame 3, and the guiding and conveying mechanism 5 is used for being matched with an optical fiber tray 35 to convey the optical fibers 8 of the optical fiber tray 35 along a set direction; after the optical fiber disc placing rack 3 is placed in the deuterium processing tank 1, the guiding and conveying mechanism 5 is used for enabling the optical fibers 8 of the optical fiber disc 35 to move towards the corresponding conical cover 4;

a sealing mechanism 6 disposed outside the deuterium processing tank 1 in correspondence with the through-hole 2 for preventing gas from flowing into or out of the deuterium processing tank 1 through the through-hole 2 when deuterium processing is performed;

and a cutting mechanism 7 arranged outside the sealing mechanism 6 and used for cutting the optical fiber 8.

The working principle of the equipment for deuterium treatment of the optical fiber is as follows: placing the optical fiber disc 35 on the optical fiber disc placing frame 3, wherein the optical fiber disc 35 matched with the guiding and conveying mechanism 5 is used for online detection, and the optical fiber disc placing frame 3 enters the deuterium processing tank 1 along a set direction through mutual matching of the first guide structure and the second guide structure, so that the guiding and conveying mechanism 5 can enable the optical fibers 8 of the optical fiber disc 35 to move towards the corresponding conical cover 4 after the optical fiber disc placing frame 3 moves in place, and reliably enable the optical fibers 8 to penetrate through the through holes 2 of the deuterium processing tank 1; before deuterium treatment, one end of the optical fiber 8 penetrates through the sealing mechanism 6, then the deuterium treatment tank 1 is closed, deuterium treatment operation is carried out according to process steps, online detection is carried out after set time, if the detection is qualified, deuterium treatment is finished, the optical fiber disc placing frame 3 can be taken out, and if the detection is unqualified, deuterium treatment operation is continued. The online detection steps are as follows: the sealing mechanism 6 is released, the conveying mechanism 5 is guided to work, the optical fiber 8 is further moved to one side of the deuterium processing tank 1, the optical fiber 8 which does not participate in deuterium processing before is partially cut off through the cutting mechanism 7, and then an operator butt-joints the detection fiber with the optical fiber 8 through the connector (the detection fiber is connected with detection equipment), so that detection can be directly carried out.

This application can on-line measuring, for prior art after deuterium is handled, with optical fiber disc 35 from deuterium processing tank 1 take out the back detection, can improve the success rate that deuterium was handled, improve production efficiency, practice thrift the cost.

As shown in FIG. 1, in the present embodiment, the first guide structure comprises one guide groove 9 provided on the upper side wall of the deuterium processing tank 1 and a plurality of guide grooves 9 provided on the lower side wall of the deuterium processing tank 1; the second guiding structure comprises a plurality of guiding wheels 10 mounted on the optical fiber tray mounting frame 3, the guiding wheels 10 being fitted with corresponding guiding grooves 9.

As shown in fig. 2, 4 and 5, in the present embodiment, the guide conveying mechanism 5 includes:

two parallel roller shafts 11, the roller shafts 11 are arranged on the optical fiber disc placing frame 3 and are used for supporting the lower part of the optical fiber disc 35;

the two limiting plates 12 are fixed on the optical fiber disc placing frame 3 at intervals, and the corresponding optical fiber disc 35 is positioned between the two limiting plates 12;

the anti-falling element 13 is fixed on the limiting plates 12, the anti-falling element 13 comprises a movable rod 14 capable of electrically stretching, the movable rod 14 is provided with a contraction position and an extension position, when the movable rod 14 is in the extension position, the movable rod 14 extends into the shaft hole 15 of the corresponding optical fiber disc 35, the optical fiber disc 35 is limited, when the movable rod 14 is in the contraction position, the movable rod 14 does not extend into the shaft hole 15 of the optical fiber disc 35, and the optical fiber disc 35 can be placed into the two limiting plates 12 or taken out from between the two limiting plates 12;

the two limiting tubes 16 are coaxially arranged and distributed at intervals, and the limiting tubes 16 are used for the optical fibers 8 to penetrate;

and the active conveying assembly 17 is positioned between the two limiting pipes 16 and is used for being matched with the optical fiber 8 and driving the optical fiber 8 to move.

When the active conveying assembly 17 works, the optical fiber 8 can move along the axial direction of the two limiting pipes 16, and due to the arrangement of the roller shafts 11, the optical fiber 8 can be normally rolled out of the optical fiber disc 35, and the optical fiber disc 35 can be effectively prevented from being separated from the optical fiber disc placing frame 3 when rotating through the anti-falling element 13.

As shown in fig. 2, in the present embodiment, the active transport assembly 17 includes:

a drive wheel 18;

the driving motor 19 is used for driving the driving wheel 18 to rotate;

a pinch roller 20 positioned above the capstan 18, the capstan 18 and the pressure being positioned at the upper and lower sides of the optical fiber 8, respectively;

a first telescopic element 21 for driving the pressure roller 20 downwards so that the optical fibre 8 is clamped between the driving wheel 18 and the pressure roller 20.

In practice, at least one of the pressure wheel 20 and the drive wheel 18 is preferably an elastic wheel.

In this embodiment, the anti-falling element 13 is an electromagnet or an electric push rod; the first telescopic element 21 is an electromagnet or an electric push rod.

As shown in fig. 3, 4, 5, 6, 7 and 8, in the present embodiment, the sealing mechanism 6 includes:

a hollow cylindrical part 22 fixed to the deuterium treating tank 1 and coaxially provided with the through hole 2;

a hollow flexible sealing sleeve 23 which is sleeved at the bottom of the cylindrical part 22, wherein the flexible sealing sleeve 23 has an initial state and a pressed state, the inner diameter of the flexible sealing sleeve 23 is larger than the outer diameter of the optical fiber 8 in the initial state, and the inner diameter of the flexible sealing sleeve 23 is smaller than or equal to the outer diameter of the optical fiber 8 in the pressed state;

a press ring 24 located in the cylindrical portion 22 and abutting against the end face of the flexible seal sleeve 23;

a hollow anti-slip cover 25 screwed to the end of the cylindrical part 22, the anti-slip cover 25 having an escape hole 26;

a second telescopic element 27 located outside the cylindrical portion 22;

one end of the transmission rod 28 is fixed with the press ring 24, the other end of the transmission rod passes through the avoidance hole 26 and then is connected with the second telescopic element 27, and the second telescopic element 27 is used for controlling the state of the flexible sealing sleeve 23.

The working principle of the sealing mechanism 6 is as follows: when the second telescopic element 27 is not operated, the optical fiber 8 can enter the cylindrical part 22 through the through hole 2 and sequentially pass through the flexible sealing sleeve 23, the pressing ring 24 and the anti-falling cover 25, and gaps exist at the moment, so that gas can easily flow into or out of the deuterium processing tank 1 through the through hole 2 under the action of pressure difference; when the second telescopic element 27 works, the compression ring 24 compresses the flexible sealing sleeve 23, the flexible sealing sleeve 23 is switched to a compressed state from an initial state, the flexible sealing sleeve 23 deforms, the hollow part of the flexible sealing sleeve 23 clamps the optical fiber 8, a good sealing effect is achieved at the moment, and gas cannot flow into or out of the deuterium treatment through the through hole 2.

In this embodiment, there are two second telescopic elements 27, symmetrically arranged about the cylindrical portion 22; the second telescopic element 27 is an electric push rod.

By the arrangement, the pressure ring 24 is stressed uniformly and reliably.

As shown in fig. 3, 5 and 8, in the present embodiment, the anti-slip cover 25 has a hollow extension 29, and the extension 29 is used for the optical fiber 8 to pass through.

As shown in fig. 3, in the present embodiment, the cutting mechanism 7 includes:

a pad 30 above which the optical fiber 8 coming out of the extension 29 is positioned;

a cutting blade 31 positioned above the backing plate 30;

and the cutting element 32 is used for driving the cutting blade 31 to move up and down to cut the optical fiber 8, and the cutting element 32 is an electromagnet, an air cylinder or an electric push rod.

As shown in fig. 3, in the present embodiment, the cutting mechanism 7 further includes:

a waste bin 33 located below the backing plate 30;

and a blower 34 fixed to the pad 30 and located obliquely below the cutting blade 31, the blower 34 being adapted to blow the chopped optical fiber 8 off the pad 30 and into the waste bin 33.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.