JPH0234755A - Floating matter-collecting equipment - Google Patents

Abstract

PURPOSE:To easily collect and remove floating matter, such as dross, on a zinc bath by providing a screw conveyor having a specific structure on a hot dip galvanizing bath and turning this conveyor. CONSTITUTION:In order to remove floating matter 5, such as dross, floating on the surface 4 of molten zinc 3 in a hot dip galvanizing tank 2, a screw conveyor 6 is disposed so that its rotating shaft 7 is made parallel to the surface 4 of the molten zinc bath 3, and also a wall 9 guiding dross 5 in the direction of the rotating shaft of the screw conveyor 6 is provided to the surface of the molten zinc bath 3 along one side of the screw conveyor 6. By turning the screw conveyor 6, the dross 5 is taken via a socket 14 into a box frame 12 provided to the terminal end of the screw conveyor 6 by means of the turning of a spiral blade 8 attached to the rotational shaft 7 and then easily discharged by means of an aspirator, a ladle, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a floating matter collection device for collecting floating matter such as foreign matter floating on a liquid surface, for example, for removing dross floating on a molten metal surface in a galvanizing tank. The present invention relates to a floating matter collection device suitable for use in, etc.

2. Description of the Related Art A conventional floating matter collecting device of this type is disclosed in Japanese Patent Application No. 75568/1983, for example. In this floating matter collection device, a screw conveyor is installed horizontally above the liquid surface on which floating matter floats, with the lower part of its feed blades immersed below the liquid surface, and a floating matter guide wall is installed along one side of the screw conveyor. A body was placed upright on the liquid surface, and a box frame for collecting floating matter was provided on the liquid surface at the end of the screw conveyor. To remove floating objects from the liquid surface, the screw conveyor is operated to attract the floating objects toward the wall by the holding angle of the feed blade, and the floating objects are guided by the wall in the direction of the rotation axis of the screw conveyor. The floating matter collected in the box frame was removed as appropriate using a suction device, a ladle, etc.

Problems to be Solved by the Invention However, according to the above-mentioned conventional configuration, the driving device of the screw conveyor and other equipment are often arranged above the box frame, and therefore it is not always easy to remove floating objects inside the box frame. The problem was that I couldn't do it.

The present invention aims to solve these conventional problems, and aims to provide a floating matter collection device that allows easy removal of floating matter within a box frame.

Means for Solving the Problems In order to solve the above-mentioned problem of the conventional interpolation point, the floating matter collection device of the present invention has a screw conveyor above the liquid surface where the floating matter floats, with the lower part of its feed blade immersed below the liquid surface. A wall body is provided horizontally and is erected on the liquid surface along one side of the screw conveyor to guide the floating materials conveyed by the screw conveyor in the direction of the rotational axis of the screw conveyor, A box frame for collecting floating matter is provided at the liquid level position with its receiving port facing the end of the screw conveyor, and in order to generate a liquid flow at the end of the screw conveyor that sends the floating matter into the box frame. The configuration was such that an impeller was installed. Further, in the present invention, the impeller is configured to be interlocked with the screw conveyor.

Operation In the configuration of the present invention described above, when the screw conveyor is operated, the floating matter corresponding to the feed blade is conveyed along with the liquid in the direction of the rotational axis of the screw conveyor while sliding on the surface of the feed blade.

At this time, the floating matter and liquid are sent toward the wall by the holding angle of the feed vane, guided by the wall, and conveyed in the direction of the rotation axis. Therefore, the liquid near the screw conveyor and the floating objects on the liquid surface sequentially flow into the back side of the feed blade, which causes a flow of liquid and floating objects on the liquid surface toward the screw conveyor, and the screw conveyor Floating objects on the liquid surface far away from the liquid are attracted. In this way,
Floating objects on the liquid surface are attracted by the screw conveyor, and at the same time they are guided by the wall and transported in the direction of the rotation axis.
0 Floating objects that enter the box frame from the box frame receiving port ride on the liquid flow generated by the rotation of the impeller and move from the end of the screw conveyor to the back of the box frame. sent to and collected. The collected floating matter can be efficiently removed using a suction device, a ladle, etc.

Note that if the rotation of the impeller is linked to the screw conveyor, the impeller drive device can be omitted.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

Reference numeral 1 designates the floating matter collection device of this embodiment, which is used in a molten metal tank 2 for molten metal such as galvanizing equipment.
A liquid 3, which is molten metal, is stored inside, and floating objects 5 are floating on the liquid surface 4. The floating matter 5 is a foreign matter (so-called dross) made of oxides of the molten metal as the liquid 3, and is transported above the liquid level 4 by a screw conveyor 6 horizontally and following the fluctuations of the liquid level 4. It is installed so that it can move up and down. Even if the liquid level 4 fluctuates due to consumption and replenishment of the liquid 3, the distance uH of the rotation axis X of the screw conveyor 6 from the liquid level 4 is kept constant. This is to maintain a constant value. The screw conveyor 6 includes spiral feeding blades 8 formed on the outer periphery of a rotating shaft 7.
A gap S is maintained between the feed blade 8 and the liquid level 4, and the lower part of the sending blade 8 is immersed below the liquid level 4.

Along one side of the screw conveyor 6, a plate-shaped wall 9 is erected on the liquid level 4, with its lower part immersed below the liquid level 4, and movable up and down following fluctuations in the liquid level 4. There is. wall 9
A bearing 10 and a floating body 11 are attached to one end. The bearing 10 rotatably supports one end of the rotating shaft 7. The floating body 11 is a cylindrical body with a bottom, which floats on the liquid level 4 and supports one end of the wall body 9 in a vertically movable manner, and also contains an appropriate amount of ballast (not shown) inside to optimize the distance H. It is kept in Liquid 3 can be used as ballast.

At the other end of the wall 9, a box frame 12 is connected to a screw conveyor 6.
A support portion 13 is formed so as to protrude from the wall body 9 to the side opposite to the wall body 9 .

The box frame 12 is a frame body with both upper and lower sides open, and the zero box frame 12 whose lower part is immersed below the liquid level 4 has a socket 14 at the terminal end of the screw conveyor 6. An impeller 1 is installed inside the box frame 12 on the side of the wall 9 of the socket 14.
5 is provided parallel to the screw conveyor 6. In addition, a floating object scooping wheel 16 for a suction device (not shown) is provided on the protruding part of the box frame 12 from the screw conveyor 6. The blade plates 18 are arranged radially at equal intervals, and both ends of the rotating shaft 17 are rotatably supported by the box frame 12.The lower part of the blade plate 18 is immersed below the liquid level 4. be done. The scooping Va body 16 is for scooping up the floating matter 5 collected in the box frame 12 and easily removing it by suction using a suction device, but in some cases, this can be omitted and the floating matter 5 collected in the box frame 12 can be easily removed by suction. Floating matter 5 may be directly scooped out and removed from 12.

The support part 13 includes two opposing side plates 19 and both side plates 1
The height of the support plate 20 can be adjusted through two support bolts 21 and nuts 22 screwed into these, and the support plate 20 can be vertically adjusted using the support bolts 21 as a fulcrum. It is swingably supported by the wall of the molten metal tank 2. A rotating shaft 7 is connected to the support portion 13 via a bearing 23.
The other end portion is rotatably supported, and a drive device 27 is attached to a bracket 24.25 formed on this support portion 13.
is installed. As mentioned above, since the wall 9 is supported by the floating body 11 and the support bolts 21 so as to be able to move up and down and swing, the screw conveyor 6 supported by the wall 9 can be moved at a lower level of the liquid level 4 as described above. It is possible to move up and down following fluctuations, and the distance H can always be kept constant.

The drive device 27 includes a motor 28 mounted on the bracket 24, a horizontal shaft 29 whose one end is connected to the motor 28 and whose other end is rotatably supported by the bracket 25, and whose intermediate part is connected to the bearing 26. It has a rotatably supported vertical shaft 30. Between the other end of the horizontal shaft 29 and the upper end of the vertical shaft 30, and between the lower end of the vertical shaft 30 and the end of the bearing 23 (III) of the rotating shaft 7, a pin type transmission wheel 31 that meshes with each other is provided. The transmission wheel 31 has a plurality of pins 32 installed radially at equal intervals on the outer periphery of each shaft 7, 29, 30. A pin type transmission wheel 33 is also provided at one end of the rotation shaft 17, and this transmission wheel 33 is connected to the transmission wheel 31 of the rotation shaft 7.
It meshes with the The pin 34 of the transmission wheel 33 is connected to the transmission wheel 31
The width of the pin 32 is wider than that of the pin 32 to ensure engagement between the two cars 31 and 33.

Next, the operation of the above configuration will be explained.

The motor 28 is operated, and the feed blade 8 is moved to the box frame 12ff via the horizontal shaft 29 and the vertical shaft 30! The five impellers 15 rotate the screw conveyor 6 in the direction in which the screw conveyor 6 is sent in the direction in which the conveyor 6 is fed, and the impellers 15 are rotated in conjunction with each other via the transmission wheels 31 and 33 that mesh with each other. A liquid flow A is generated. On the other hand, screw conveyor 6
The floating matter 5 corresponding to the sending blade 8 is sent out together with the liquid 3 to the receiving port 14.

At this time, the floating matter 5 and liquid 3 on the opposite side of the wall 9 with respect to the rotation axis
The paper is sent to the wall 911m1 via the wall 911m1, and is urged in a direction to separate from the sending blade 8, but the wall 9 prevents the paper from separating, and the paper is conveyed along the wall 9 toward the receiving port 14.

Therefore, in the molten metal tank 2, the liquid 3 adjacent to the screw conveyor 6 and the suspended matter 5 on the liquid surface 4 sequentially flow into the back side of the feeding blade 8, and as a result, the liquid flowing toward the screw conveyor 6 on the liquid surface 4. 3 and the floating matter 5 is generated, and the floating matter 5 on the liquid level 4 away from the screw conveyor 6 is attracted. In this way, floating matter 5 becomes liquid 3
At the same time, it is conveyed by the wall body 9 in the direction of the rotation axis X, and the receiving port 1
4 into the box frame 12.

The floating matter 5 and liquid 3 that have flowed into the box frame 12 are
However, the upper and lower surfaces of the box frame 12 are open, and the liquid levels 4 inside and outside the box frame 12 are kept at the same level due to atmospheric pressure, so the separated liquid 3 sequentially flows into the box frame 12. It flows out of the box frame 12 from the open bottom surface. On the other hand, the separated floating matter 5 rides on the liquid flow A generated by the impeller 15, moves from directly below the screw conveyor 6, is sent to the back of the box frame 12, and is collected. The collected floating matter 5 increases in thickness and becomes a thicker layer, making it easier to remove without involving the liquid 3. Therefore, this floating e15 is scooped up by the transporter 16 and removed by a suction device.

Since the rotation of the impeller 15 is interlocked with the screw conveyor 6, a drive device for the impeller 15 is not required, and therefore the structure is simple and economical.

In this embodiment, the wall 9 is provided along one side of the screw conveyor 6, but the screw conveyor 6 may be arranged along the inner wall of the molten metal tank 2 and the wall 9 may be omitted.

This allows the structure to be made even simpler and more economical. Further, although this embodiment shows the case where the device is used in the molten metal tank 2, the same effect can be obtained even if it is used to remove floating matter on the surface of the liquid in a pond.

Effects of the Invention As described above, according to the present invention, a box frame for collecting floating matter is provided on the side of the terminal end of the screw conveyor, and a blade is provided for generating a liquid flow to send the floating matter into the box frame. Since the car is located at the end of the screw conveyor, floating objects can be collected in an unobstructed area around the box frame. Therefore, floating objects within the box frame can be easily and efficiently removed.

Further, when the impeller is linked to the screw conveyor, only one drive device is required, so the structure can be made simple and economical.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, FIG. 1 is a partially cutaway front view thereof, FIG. 2 is a partially omitted plan view of FIG. 1, and FIG. 3 is a partially cutaway view of FIG. 1. It is a diagram. DESCRIPTION OF SYMBOLS 1... Floating object collection device, 4... Liquid level, 5... Floating object, 6... Screw conveyor, 8... Feed vane,
9...Wall body, 12...Box frame, 14...Receipt date, 1
5... Impeller, A... Liquid flow, X... Rotation axis. Agent Yoshihiro Morimoto

Claims (1)

[Claims] 1. A screw conveyor is installed in a horizontal direction above the liquid surface on which floating objects are floating, with the lower part of its feed blades immersed below the liquid surface, and the floating objects conveyed by the screw conveyor are transported by the screw conveyor. A wall for guiding in the direction of the rotational axis is erected on the liquid level along one side of the screw conveyor.
A box frame for collecting floating matter is provided at the liquid level on the side of the terminal end of the screw conveyor, with its receiving port facing the terminal end of the screw conveyor. A floating matter collection device characterized in that an impeller is provided for generating a liquid flow to be sent. 2. The floating matter collection device according to claim 1, wherein the impeller is linked to a screw conveyor.