JP2878673B1 - Glass filling equipment in glass melting furnace - Google Patents

Abstract

An object of the present invention is to provide a glass filling apparatus in a glass melting furnace capable of easily removing molten glass when clogging or the like occurs. SOLUTION: A sampling mechanism 22 installed at an upper part of a container to sample a part of molten glass, and a filling nozzle 20
And a telescopic coupling mechanism 23 for sealing between the glass melting furnace and the sampling mechanism.
The coupling mechanism is disposed from the vicinity of the lower portion of the filling nozzle to a connection portion with the sampling mechanism, and
There is provided a glass guide tube 24 detachably attached to the coupling mechanism from below, and locking means 25 for detachably locking the glass guide tube to the coupling mechanism. And

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass filling apparatus in a glass melting furnace used for vitrification of industrial waste, particularly high-level radioactive waste and waste liquid.

[0002]

2. Description of the Related Art Conventionally, as a method of treating waste and waste liquid, the above waste and waste liquid are mixed into glass melted in a glass melting furnace, and the molten glass mixed with the waste and waste liquid is mixed. A vitrification treatment in which a container is filled and cooled and solidified is known. In particular, this vitrification treatment is regarded as an effective means for treating high-level radioactive waste and waste liquid.

FIG. 6 and FIG. 7 show a glass filling apparatus of a glass melting furnace which is conventionally used. A filling nozzle 1 connected to a lower part of the glass melting furnace and a container arranged below the same are shown. 2 comprises a sampling mechanism 3 installed above the filling nozzle 1 and an extendable coupling mechanism 4 provided surrounding the filling nozzle 1 and sealing between the glass melting furnace and the sampling mechanism 3.

Around the filling nozzle 1, the glass inside is heated and melted through the filling nozzle 1 to cause the molten glass to flow down from the filling nozzle 1. By stopping the heating of the glass in the nozzle 1 and solidifying it, the solidified glass closes the filling nozzle 1 and stops the flow of the molten glass from the glass melting furnace. Is provided.

The sampling mechanism 3 is formed in a base 6 placed on the upper end of the container 2 so as to vertically penetrate a glass flow path 7 for exposing the upper opening of the container 2 upward. In addition, a sampling vessel 8 is arranged in the glass flow-down path 7, and a vessel operation rod 9 for supporting the sampling vessel 8 is provided on the base 6 so as to be slidable in the horizontal direction. One end of the base 9 is projected outside the base 6,
A cutter 10 slidably provided in the glass flow-down path 7 is slidably provided above the container operation rod 9, and a cutter operation rod 11 for moving the cutter 10 forward and backward is slid. The cutter operation rod 11 is freely provided, and one end of the cutter operation rod 11 is protruded to the outside of the base 6. The sampling container 8 is moved down the glass flow path of the base 6 by operating the container operation rod 9. 7, that is, the center of the opening of the container 2, and the side of the glass flow-down path 7, that is, the position near the inner periphery of the opening of the container 2. Has become.

Further, the cutter 10 is protruded so as to cross the glass flow-down path 7 by operating the cutter operating rod 11, thereby cutting the solidified glass remaining in the glass flow-down path 7. The filling nozzle 1 is separated from the glass filled in the container 2.

On the other hand, the coupling mechanism 4 includes a protective cover 12 provided to surround the filling nozzle 1, an annular elevating means 13 provided continuously below the protective cover 12,
A funnel-shaped guide tube 14 fixed to the center of the protective cover 12 and having a lower part slidably fitted in a center hole of the elevating means 13;
3 is provided with a connecting pipe 15 protruding downward from the center hole.
The connecting pipe 15 is integrally fixed, and is constituted by an elevating body 16 provided so as to be able to ascend and descend, and a bellows 17 which elevates the elevating body 16 using fluid pressure such as compressed air. By supplying compressed air to the bellows 17, the elevating body 16 is raised to raise the connecting pipe 15 fixed to the elevating body 16, and the connecting pipe 15 is positioned below. By separating from the sampling mechanism 3 and extracting air from the bellows 17, the lifting body 16,
The lowering of the connecting pipe 15 is allowed by the weight of the connecting pipe 15 so that the connecting pipe 15 contacts the sampling mechanism 3.

Further, a connecting portion of the elevating means 13 with the protective cover 12 is provided with a pair of viewing windows 18 directed toward the lower end of the filling nozzle 1 positioned inside the protective cover 12. Is provided, the filling nozzle 1
The state of the lower end can be checked.

In such a conventional glass filling apparatus for a glass melting furnace, after a sampling mechanism 3 is installed on a container 2, the container 2 is moved below a filling nozzle 1 of the glass melting furnace. The upper opening and the center of the glass flow-down path 7 of the sampling mechanism 3 are positioned coaxially with the filling nozzle 1.
By exhausting the air in 7, the connecting pipe 15 is lowered, and the connecting pipe 15 is brought into contact with the sampling mechanism 3 to connect the glass melting furnace and the container 2.

Then, the heater 5 is energized to supply the charging nozzle 1
The molten glass is caused to flow down from the filling nozzle 1 by melting the glass inside through the above, and is filled into the container 2 through the guide tube 14 and the connecting tube 15 as shown by an arrow in FIG. .

At this time, the sampling container 8 and the cutter 10 are retracted to the side of the glass flow path 7 of the base 6.

At the time of filling such molten glass,
By operating the container operation rod 9, the sampling container 8
Is moved on the trajectory of the molten glass as shown by the broken line in FIG. 7, a part of the molten glass corresponding to the container 2 is collected as a sample, and the collection of a predetermined amount of the sample is completed. At this time, the container operation rod 9 is operated to retract the sampling container 8 to the inner wall side of the glass flow-down path 7, and after filling the container 2 with a predetermined amount of molten glass, the power supply to the heater 5 is stopped. By doing so, the molten glass in the filling nozzle 1 is solidified, and the filling nozzle 1 is closed.

When the filling nozzle 1 is closed as described above, the filling nozzle 1 and the glass filled in the container 2 may be in a continuous state by the linear solidified glass, and the container 2 is unloaded in this state. Then, since it is assumed that the solidified glass on the upper part of the container 2 is broken and dropped to the outside of the container 2, after the filling nozzle 1 is closed, the cutter 10 provided in the sampling mechanism 3 is closed.
Is moved toward the inside of the glass flow-down path 7 to cut the linear solidified glass, and then the cutter 10 is stored in the retracted position.

As a result, the connection between the solidified glass of the filling nozzle 1 and the solidified glass in the container 2 is cut off, and broken pieces of the solidified glass generated at the time of cutting are dropped and stored in the container 2.

Next, the bellows 17 of the elevating means 13
Compressed air is supplied to the inside, and the connecting pipe 15 is raised,
By disconnecting the connecting pipe 15 from the container 2, the container 2 is brought out.

The container 2 is conveyed to a subsequent processing step, and after its opening is hermetically closed, is stored in an appropriate storage facility.

The glass filling apparatus of the conventional glass melting furnace is
Through such a series of operations, the waste is charged into the container 2 together with the molten glass, and the waste is vitrified. The flow of the molten glass from the filling nozzle 1 during the filling of the molten glass is performed. The state is confirmed from the viewing window 18.

Various operations such as transporting the container 2 and moving the sampling container 8 and the cutter 10 are performed by remote control using a manipulator or the like.

[0019]

However, such a conventional glass filling apparatus in a glass melting furnace has the following problems to be improved.

That is, the flow passage for the molten glass from the filling nozzle 1 to the container 2 is formed by the funnel-shaped guide tube 14 and the connecting tube 15 provided integrally with the elevating means 13. Since the funnel-shaped portion of the guide tube 14 intersects with the flowing direction of the molten glass, if glass adheres to the funnel-shaped portion for any reason, the glass stays in the funnel-shaped portion and further continues. It is assumed that the molten glass flowing down accumulates on the staying glass and blocks the inside of the guide tube 14 and the connection tube 15.

However, since the guide tube 14 and the connecting tube 15 are provided integrally with the lifting / lowering means 13,
When the inside is closed by the glass as described above, the entirety of the coupling mechanism 4 must be replaced after the glass melting furnace is completely stopped, which not only complicates the operation but also is sound. Since the lifting / lowering means 13 must also be replaced, not only the operation becomes complicated, but also the maintenance cost rises.

The molten glass flowing down state is checked through a viewing window 18 provided at the upper part of the coupling mechanism 4, and these viewing windows 18 are directed toward the lower end of the filling nozzle 1. Therefore, only the flow state of the molten glass at the lower end of the filling nozzle 1 can be confirmed, and the state of filling the container 2 cannot be directly confirmed.

Therefore, conventionally, the fact that the molten glass is flowing down straight from the lower end portion of the filling nozzle 1 in the vertical direction is regarded as the case where the filling of the container 2 is performed smoothly.

Further, the sampling vessel 8 for sampling the molten glass as a sample is placed in the glass flow-down path 7 of the substrate 6 and the sampling vessel 8 in the storage state at the time of non-sampling, so that it is allowed to flow down. If the molten glass shakes for some reason, the molten glass comes into contact with the sampling container 8, and there is a problem that smooth filling cannot be performed.

The present invention has been made in order to effectively solve the problems of the glass filling apparatus in such a conventional glass melting furnace, and when the clogging of the molten glass or the like occurs, the removal is easily performed. A first object is to provide a glass filling apparatus in a glass melting furnace to be obtained, and another object is to surely check a filling state of a container, and still another object is to An object of the present invention is to prevent the filling of the molten glass from being hindered by the molten glass sampling mechanism.

[0026]

According to a first aspect of the present invention, there is provided a glass sampling apparatus in a glass melting furnace, wherein the molten glass in the glass melting furnace is caused to flow down, and the molten glass is set below the glass melting furnace. In a glass filling apparatus in a glass melting furnace designed to be filled into a container, a sampling mechanism installed at an upper part of the container and sampling a part of the molten glass to be filled, and a filling mechanism provided below the glass melting furnace A telescopic coupling mechanism provided around the nozzle and sealing between the glass melting furnace and the sampling mechanism, wherein the coupling mechanism is connected to the sampling mechanism from near the lower part of the filling nozzle. A glass guide tube which is disposed over the portion and which is detachably attached to the coupling mechanism from below, Ido tube is characterized in that the locking means is provided for removably engaging with the coupling mechanism.

Here, the invention described in claim 2 corresponds to claim 1
The coupling mechanism described in 1) is formed with a first viewing window through which the flowing state of the glass from the filling nozzle can be visually recognized, and the sampling mechanism has a glass in a glass flowing path formed in the sampling mechanism. A second viewing window is formed to allow the user to visually check the flowing state of the vehicle.

Further, the invention described in claim 3 is the first invention.
Alternatively, the sampling mechanism according to claim 2, wherein a sampling container protruding into a glass flow-down path formed therein is movably provided,
A concave portion for accommodating the sampling container is formed on an inner wall of the glass flow path.

Further, according to a fourth aspect of the present invention, there is provided the sampling mechanism according to any one of the first to third aspects, wherein the solidified threaded glass remaining in the glass flow path when the glass filling is completed. Cutter is provided so as to be able to advance and retreat in the glass downflow path,
A concave portion for accommodating the cutter is formed on an inner wall of the glass flow-down path.

[0030]

1 to 5 show an embodiment of a glass filling apparatus in a glass melting furnace according to the present invention.
This glass filling apparatus causes molten glass to flow down from a filling nozzle 20 provided below a glass melting furnace (not shown), and fills the molten glass into a container 21 installed below the filling nozzle 20. A sampling mechanism 22 installed above the container 21 for sampling a part of the molten glass to be filled;
0, and is provided with an extendable coupling mechanism 23 for sealing between the filling nozzle 20 and the sampling mechanism 22. A glass guide tube 24 disposed over a connection with the mechanism 22 and detachably attached to the coupling mechanism 23 from below, and the glass guide tube 24 is detachable from the coupling mechanism 23; It has a basic configuration in which locking means 25 for locking are provided.

To explain these details, the sampling mechanism 22 is mounted so as to cover the upper opening of the container 21, and includes a base 26 installed horizontally on the upper part of the container 21. The base 26 is formed with a glass flow-down path 27 that penetrates in the vertical direction and exposes the upper opening of the container 21 upward, and is capable of moving into and out of the glass flow-down path 27. And a sampling container 28 is provided.
Further, a cutter 2 that is advanced and retracted so as to cross the glass flow-down path 27 is provided above the sampling vessel 28.
9 are provided.

Further, a container operation rod 30 for moving the sampling container 28 into and out of the glass flow-down path 27 is integrally attached to the sampling container 28. The container operation rod 30 is
Is provided so as to be slidable through the side wall of the glass.
7, a cutter operating rod 31 for moving forward and backward is integrally mounted.
1 is provided so as to slidably penetrate the side wall of the base 26.

On the other hand, portions of the container operating rod 30 and the cutter operating rod 31 protruding from the base 26 are supported by a guide frame 32 attached to a side of the base 26.

Further, in the present embodiment, a concave portion 33 for accommodating the sampling container 28 and the cutter 29 at the time of non-sampling is formed in the side wall of the base 26, and the concave portion 33 is formed at the center of the glass flow-down path 27. A second viewing window 34 is formed.
The viewing window 34 is formed singly or in a plurality as necessary, so that the flowing state of the molten glass flowing down in the glass flowing path 27 can be visually recognized.

The guide frame 32 of the base 26
On the side opposite to the position where
2. A balance weight 35 substantially equal to the weight of the sampling container 28, the cutter 29, the container operation rod 30, and the cutter operation rod 31 is attached, and the balance weight 35 moves the center of gravity of the sampling mechanism 22 to the above-mentioned glass. It is positioned at the center of the flow-down path 27 so as to ensure balance during the transport.

The coupling mechanism 23 is connected to the filling nozzle 20
Protective cover 36 provided so as to surround the lower part of
Lifting means 37 incorporated in the lower portion of the protective cover 36, and disposed in a through hole formed in the center of the lifting means 37, and integrally attached to the lifting means 37, and A connecting pipe 38 is provided which is lifted up and down. The glass guide tube 24 is attached to the inside of the connecting pipe 38 so as to be removable therefrom, and a lower end of the glass guide tube 24 and the connecting pipe 38 The locking means 25 is provided between the lower end portion 38 and the lower end portion.

The lower end of the glass guide tube 24 is provided with a flange 24a which is brought into contact with the lower end surface of the connecting tube 38 when inserted into the connecting tube 38. When the flange 24a is in contact with the lower end surface of the connecting pipe 38, the upper end is formed to have a length near the lower end of the filling nozzle 20.

The elevating means 37 comprises an annular elevating body 39 on which the connecting pipe 38 is mounted coaxially, and a bellows 40 for moving the elevating body 39 up and down using a fluid pressure such as air pressure. By supplying compressed air into the bellows 40 and raising the elevating body 39, the connecting pipe 38 and the glass guide pipe 24 are raised, and the air in the bellows 40 is evacuated. Thus, the lifting body 39, the connecting pipe 38, and the glass guide pipe 24 are lowered by their own weight.

Further, the locking means 25 comprises a pair of engaging pieces 41 protruding radially outward on the outer surface of the lower end of the connecting pipe 38 and the flange 2 of the glass guide pipe 24.
4a, an engaging recess which is slidably provided in a direction orthogonal to the engaging piece 41 provided on the connecting pipe 38, and which engages and locks each of the engaging pieces 41. 4
2 was formed in two places (only one place is shown in the figure,
A locking member 43 (which is also formed on the opposite side) and a rotatably attached to the glass guide tube 24 and screwed to the locking member 43 to form the locking member 43.
And an operating bolt 44 for moving the operating bolt 44 relative to the glass guide tube 24 in the radial direction. A connecting portion 44a to which a remote operating means such as a manipulator is attached is provided at an end of the operating bolt 44 serving as an operating portion. Are formed.

On the other hand, the protective cover 36 is provided with a pair of first viewing windows 45 directed toward the filling nozzle 20 so that the state of the molten glass flowing down from the filling nozzle 20 can be checked. , The filling nozzle 20
Around the heater 46 through which the glass inside is heated and melted through the filling nozzle 20 to flow down the glass.
Is provided.

In the glass filling apparatus in the glass melting furnace according to the present embodiment thus configured, the glass guide tube 24 is inserted from below the connecting tube 38, and the flange 24 a is attached to the lower end surface of the connecting tube 38. After the contact, the operating bolt 44 is rotated to move the locking member 43 so that the pair of engaging recesses 42 formed on the locking member 43 project toward the outer periphery of the lower end of the connection pipe 38. The glass guide tube 24 and the connection tube 38 are connected at their lower ends by fitting and locking the pair of engagement pieces 41 provided.

Prior to the loading of the container 21, the elevating means 37 is driven to extend the bellows 40, so that the glass guide tube 24 is raised together with the elevating body 39 and the connecting tube 38. Then, the container 21 is carried in with the sampling mechanism 22 placed on the container 21.

Here, as shown in FIG. 1, the sampling container 28 and the cutter 29 of the sampling mechanism 22 are
The glass flow path 27 of the base 26 is housed in the recess 33.
The container 21 and the filling nozzle 20 are aligned with each other so that the upper opening of the container 21 is moved to the glass flow path 2 of the sampling mechanism 22.
7 and facing the filling nozzle 20 and these are positioned coaxially.

Next, the bellows 40 of the elevating means 37
By evacuating the air inside, the connecting tube 38 and the glass guide tube 24 are lowered by their own weight together with the elevating body 39, and the lower end of the glass guide tube 24 is
As shown in FIG. 2, the base 2 of the sampling mechanism 22
6, the filling nozzle 20 and the container 21 are connected to each other.

From this, the energization of the heater 46 is started, and the glass in the filling nozzle 20 is heated and melted, so that the glass flows down from the filling nozzle 20 and the filling of the container 21 is started. The molten glass is
As shown by the broken line in FIG. 2, the glass flow path 2 from the filling nozzle 20 to the glass guide tube 24 and the sampling mechanism 22
7, the inside of the container 21 is filled, and the state of the molten glass in the filled state is changed to the first viewing window 45 and the second viewing window 45.
It can be confirmed in the viewing window 34.

Therefore, the state of flowing down from the filling nozzle 20 and the state of flowing into the container 21 can be confirmed, so that the state of filling the molten glass into the container 21 can be grasped reliably.

When filling the molten glass, a sampling container 28 provided in the sampling mechanism 22 is provided.
And the cutter 29 with the concave portion 3 formed in the base 26.
3 and the cutter 29 is retracted to the retracted position, and the glass flow-down path 27 is largely opened, so that a smooth filling operation can be realized without obstructing the flow of the molten glass. .

When collecting the molten glass to be filled, the container operating rod 30 is operated by a manipulator or the like.
By moving the sampling container 28 to the central portion of the glass flow-down path 27 as shown by the broken line in FIG. When the predetermined amount is collected in the sampling container 28 and the sampling is completed, the container operating rod 30 is operated again to move the sampling container 28 into the concave portion 3.
Store in 3.

During the process of collecting the molten glass, the collecting position is the center of the glass flow path 27 formed on the base 26, and the second viewing window 34 is formed toward the center. By doing so, it is possible to reliably grasp the state of collection by the sampling container 28.

When the container 21 is filled with a predetermined amount of molten glass, the power supply to the heater 46 is stopped, the molten glass in the filling nozzle 20 is solidified, and the flow of the glass is stopped to stop the filling operation. Let it.

The solidified threaded glass remaining between the filling nozzle 20 and the container 21 is cut by moving the cutter 29 toward the glass flow-down path 27 by the cutter operating rod 31. An operation for separating the glass in the filling nozzle 20 and the glass in the container 21 is performed. When the threaded glass is cut, the filling nozzle 20 and the container 21 are connected by the coupling mechanism 23. Therefore, there is no possibility that cut pieces or powder of the threaded glass spill out of the container 21.

After the solidified glass has been cut off between the filling nozzle 20 and the container 21 in this manner, the lifting means 3
7 is supplied again with compressed air to extend the bellows 40, thereby making the glass guide tube 2
4 and separated from the sampling mechanism 22, and then the container 21 is removed from the sampling mechanism 2.
The filling operation is completed by transporting the mixture to the processing equipment in the subsequent stage together with 2.

On the other hand, during the filling operation of the molten glass as described above, since the inner wall surface of the glass guide tube 24 is substantially parallel to the flow-down path of the glass and the clogging in the vertical direction has been eliminated, the initial state at the initial stage of the filling. Even when the solidified glass flowing down is inclined, the solidified glass can be guided in a substantially vertical direction by the inner wall surface of the glass guide tube 24. As a result, molten glass is deposited in the glass guide tube 24. Can be greatly suppressed.

Then, for some reason, the glass guide tube 2
If the glass is deposited in the inside 4 and the inside is closed, it can be recovered by replacing the closed glass guide tube 24.

That is, as shown in FIG. 3, the transport tray 47 is located below the coupling mechanism 23,
After the transport tray 47 is raised and brought into contact with the lower portion of the coupling mechanism 23, the operation bolt 44 is rotated by a remote operation using a manipulator or the like, and the glass guide tube 24 is rotated.
As shown in FIG. 4, the engaging member 43 mounted on the connecting member 38 is moved relative to the engaging concave portion 42 formed on the engaging member 43 and the engaging member 42 protruding from the connecting pipe 38. The engagement with the mating piece 41 is released, and then the transport tray 47 is lowered to pull out the glass guide tube 24 as shown in FIG.

In this way, after the closed glass guide tube 24 is pulled out, a new glass guide tube 24 is attached to the connecting tube 38 by an operation reverse to the pulling-out operation. The process of recovering from the clogging of the glass can be performed by replacing only the glass guide tube 24.
A simple operation, such as rotating the lock member 43 to separate the locking member 43 from the engagement piece 41, is sufficient, so that the processing operation is simple and replacement parts can be minimized.

Further, since the above-mentioned replacement work can be performed by remote control and can be performed without relation to the glass melting furnace, it is not necessary to stop the glass melting furnace itself.

The shapes, dimensions, and the like of each component shown in the above embodiment are merely examples, and can be variously changed based on design requirements and the like.

[0059]

As described above, according to the first aspect of the present invention,
According to the invention as set forth in any one of claims to 3, since the glass guide tube can be inserted into and removed from the coupling mechanism from below, the glass guide tube alone can be replaced, and the inside of the glass guide tube is filled. Even when the glass is closed by the glass, it can be quickly and simply restored, and the replacement parts can be minimized to suppress a rise in maintenance costs.

Further, as described in the second aspect of the present invention, the connecting mechanism and the sampling mechanism are each provided with a viewing window whose inside can be visually recognized, so that the molten glass flows down from the filling nozzle. The state of filling of the molten glass into the container can be confirmed, and the state of filling of the molten glass can be reliably grasped.

Further, according to the third aspect of the present invention,
By forming a concave portion for accommodating the sampling container in the sampling mechanism, when filling the molten glass into the container, the flow path of the molten glass can be largely opened, and the filling operation can be reliably performed. .

Then, as in the invention according to claim 4,
The sampling mechanism is provided with a cutter for cutting the threaded glass remaining in the glass flow-down path at the time of completion of filling, so that the solidified glass in the filling nozzle and the solidified glass in the container are separated after filling is completed, and at the time of cutting. In the above, the surroundings of the threaded glass are covered by the coupling mechanism, whereby it is possible to prevent the cutting powder of the threaded glass from dropping out of the container, thereby facilitating the unloading of the container after filling the glass. At the same time, contamination of the filling equipment can be prevented.

Further, by storing the cutter in the recess at the time of filling, the glass flow-down path provided in the sampling mechanism can be largely opened, and the filling of the molten glass can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a glass filling apparatus in a glass melting furnace of the present invention.

FIG. 2 is a longitudinal sectional view showing one embodiment of a glass filling apparatus in a glass melting furnace of the present invention, showing a filling state.

FIG. 3 is a longitudinal sectional view showing one embodiment of a glass filling device in the glass melting furnace of the present invention, showing a process of replacing a glass guide tube.

FIG. 4 is a longitudinal sectional view showing one embodiment of a glass filling apparatus in a glass melting furnace of the present invention, showing a process of replacing a glass guide tube.

FIG. 5 is a longitudinal sectional view showing one embodiment of a glass filling apparatus in the glass melting furnace of the present invention and showing a process of replacing a glass guide tube.

FIG. 6 is a longitudinal sectional view showing an example of a glass filling apparatus in a conventional glass melting furnace.

FIG. 7 is a longitudinal sectional view showing an example of a glass filling apparatus in a conventional glass melting furnace, showing a filling state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 Filling nozzle 21 Container 22 Sampling mechanism 23 Coupling mechanism 24 Glass guide tube 25 Locking means 27 Glass flow-down path 28 Sampling container 29 Cutter 33 Concave part 34 Second viewing window 45 First viewing window

──────────────────────────────────────────────────の Continued on the front page (72) Noboru Endo, No. 33, Muramatsu, Oji, Tokai-mura, Naka-gun, Ibaraki Prefecture Within the Tokai Works of the Power Reactor and Nuclear Fuel Development Corp. No. 4 Muramatsu 33 Tokai Works, Power Reactor and Nuclear Fuel Development Corp. (72) Inventor Kiyoshi Sato 1st Shinnakaharacho, Isogo-ku, Yokohama-shi, Kanagawa Pref. 1 in Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Inside the Yokohama Engineering Center, Ishikawajima-Harima Heavy Industries Co., Ltd. 10-177090 (JP, A) JP-A-9-329693 (JP, A) JP-A-8 −304595 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G21F 9/16 G21F 9/30

Claims (4)

(57) [Claims] 1. A glass filling apparatus in a glass melting furnace in which molten glass in a glass melting furnace is caused to flow down and the molten glass is filled into a container provided below the glass melting furnace. A sampling mechanism installed at the top and sampling a part of the molten glass to be filled is provided surrounding a filling nozzle provided below the glass melting furnace, and a space between the glass melting furnace and the sampling mechanism is provided. An expandable coupling mechanism for sealing, the coupling mechanism is disposed from the vicinity of the lower portion of the filling nozzle to a connection portion with the sampling mechanism, and can be inserted into and removed from the coupling mechanism from below. And a locking means for locking the glass guide tube to the coupling mechanism in a detachable manner. A glass filling apparatus in a glass melting furnace. 2. The coupling mechanism has a first viewing window through which the glass flowing down from the filling nozzle can be visually recognized, and the sampling mechanism has a glass flow down formed in the sampling mechanism. 2. The glass filling apparatus according to claim 1, wherein a second viewing window is formed to allow a user to visually check a flowing state of the glass in the path. 3. 3. The sampling mechanism is provided movably with a sampling container protruding into a glass flow-down path formed inside the sampling mechanism, and the sampling vessel is provided on an inner wall of the glass flow-down path. 3. A glass filling apparatus in a glass melting furnace according to claim 1 or 2, wherein a concave portion for accommodating is formed. 4. The sampling mechanism is provided with a cutter for cutting solidified threaded glass remaining in the glass flow-down path when glass filling is completed, such that the cutter can advance and retreat in the glass flow-down path. The glass filling apparatus according to any one of claims 1 to 3, wherein a concave portion for accommodating the cutter is formed on an inner wall of the glass flow-down path.