JPH07268684A - Drainage structure in strip material processing equipment - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Completely laminarize the flow of the electrolyte on the strip plate side without affecting the processing conditions such as plating, degreasing, and pickling. Providing the structure of a waste liquid treatment device that can prevent vibration of the strip. [Structure] A drainage port 2 is provided in both width directions or one side width direction of a strip-shaped material S arranged in a vertical direction, and the upper end of the drainage material 2 is spaced apart from the surface of the strip-shaped material S by a partition plate 3 and a tank. 1 Treatment of the band-shaped material S provided with a partition plate 3 which is provided higher than the liquid level of the pool of the processing liquid formed between the inner wall and the partition plate 3 for separating the passage plate side of the band-shaped plate S and the drainage reservoir 6 side In the structure of the drainage tank 1 of the apparatus, on the reservoir side of the processing liquid of the partition plate 3, that is, on the inner wall side of the tank 1 opposite to the passage side of the strip plate S,
High weir 5 ₁ to 5 ₄ than the upper end surface of the partition plate 3 by arranging a plurality by the plurality of weirs 5 ₁ to 5 _4, to form a plurality of liquid reservoir.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for continuously electroplating a metal strip such as a steel plate strip, and more particularly to an electroplating for carrying a metal strip in a longitudinal direction, a pickling and a degreasing treatment. The present invention relates to a drainage treatment structure in a belt-shaped material treating apparatus that supplies a liquid to the surface of a belt-shaped material to be treated.

[0002]

2. Description of the Related Art In an electrolytic plating apparatus for vertically transporting a metal strip, when a large amount of an electrolytic solution is discharged from below, the flow of the solution changes from an upward flow to a horizontal flow. The liquid becomes agitated, vibrates the strip, and causes wrinkles and breaks in the strip steel sheet.

From this point of view, the structure of the drainage device for rectifying the flow of the electrolyte solution in the drainage box without forming a stirring state of the electrolyte solution is disclosed in JP-A-5-78891. There is.

As shown in FIG. 7 and FIG. 8, this drainage device is provided in a drainage tank 1 of a continuous plating device for a strip plate traveling in a vertical direction in both width directions or one side width direction of a strip material S. The drainage port 2 and a partition plate 3 higher than the liquid level of the liquid pool on the drainage side at a constant distance from the surface of the strip-shaped member S are arranged around the strip-shaped plate S. A large number of through holes p
Is provided.

In operation of the drainage device, the drainage reservoir 4 is provided through a large number of through holes p formed in the partition plate 3.
The electrolytic solution L flows out of the partition tank 3 into the drain tank, and the rising speed of the electrolytic solution L rising on the strip surface is moderated.
The rate of rise of the electrolytic solution at the top becomes almost zero, and all the electrolytic solution becomes a horizontal flow, which eliminates the stirring action of the electrolytic solution on the strip surface, thereby preventing the vibration of the strip. is there.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, drainage flows from the drainage side of the partition wall to the passage side of the strip plate through a large number of through holes provided in the partition wall. The phenomenon that the treatment liquid rising on the surface of the strip plate on the passage plate side is agitated, which may cause vibration in the strip. Further, the liquid discharged through the through holes provided in the partition wall is stored in the pool and then discharged from the drain ports provided on both sides of the drain box located on both ends of the strip in the width direction. However, the flow of the liquid in the central portion is poor with respect to the flow of the liquid in the vicinity of the discharge ports on both ends in the width direction, and the liquid level height LH of the drainage is lower than the liquid level height of the drainage port 2 in the central part. Since the liquid level of the strip becomes high, and the liquid pressure (pressure) acting on the front and back of the strip below the liquid level becomes uneven in the strip width direction and on the front and back, the strip passing position changes. Further, the flow velocity distribution of the liquid flowing along the front and back sides of the strip in the width direction of the strip is disturbed, resulting in non-uniform plating.

An object of the present invention is to eliminate the drawbacks of the conventional drainage device, and to electrolyze the strip plate through the strip side without affecting the processing conditions such as plating, degreasing and pickling. It is an object of the present invention to provide a drainage treatment device capable of completely rectifying the flow of a liquid, suppressing the variation in the liquid flow in the width direction of the strip plate, and preventing vibration of the strip plate.

[0008]

The drainage treatment apparatus of the present invention has drainage ports in both widthwise directions or one side widthwise direction of a strip-shaped material to be treated, and is arranged at a constant interval from the surface of the strip-shaped material. The upper end of the strip is provided higher than the liquid level of the pool of the processing liquid formed between the partition plate and the inner wall of the tank, and the strip plate is provided with a partition plate that separates the passage side of the strip plate from the drainage pool side. In the drainage structure of the material processing device, on the processing liquid pool side of the partition plate,
A plurality of weirs higher than the upper end surface of the partition plate are arranged, and a plurality of liquid pools are formed by the plurality of weirs.

Independent drainage passages can be provided in the plurality of liquid pools.

Further, the drainage treatment apparatus of the present invention covers a plurality of curved guide plates directly above the partition plate, widens the spacing between the guide plates on the plate side, and gradually narrows toward the drainage pool side. The structure may be formed, and further, in this structure, a plurality of weirs higher than the upper end surface of the partition plate are arranged on the processing liquid reservoir side of the cutting plate, and the plurality of weir reservoirs are provided by the plurality of weirs. And a plurality of liquid pools are provided with independent drainage paths.

[0011]

[Function] The backflow of the discharged processing liquid, which has once accumulated on the pool side beyond the partition plate, to the strip plate side is prevented, and the turbulent flow of the processing liquid rising on the surface of the strip material caused thereby is prevented. It

The flow of drainage from an independent reservoir formed by dividing the weir into a plurality of weirs in the width direction of the strip plate can be equalized at the weir end portion and the central portion, and further, independent drainage can be achieved. By providing the passage, the height of the partition plate is suppressed by relaxing the inclination of the liquid drainage surface that occurs in the liquid drainage device.

The treatment liquid in the plate passage portion of the strip plate flows into the drainage portion over the partition plate, forms a constant liquid surface, and is discharged from the discharge port. At this time, the height of the partition plate between the passage part of the strip-shaped plate and the drainage part and the weir provided in the partition plate is made higher than the liquid level formed on the drainage part side, so that the drainage part Prevents mixing and stirring of liquids between a plurality of liquid pools.

By providing each of the plurality of liquid pools with each drainage port and an independent drainage channel, the inclination of the drainage surface generated in the drainage device is suppressed and the liquid filling rate in each flow path is suppressed. It is possible to suppress the capacity of the drainage device by improving the above, and to make the drainage amount uniform in the width direction of the strip plate.

By providing the guide vanes directly above the partition plate, the direction can be changed without obstructing the flow of the liquid flowing along the surface of the strip plate. Further, the flow path formed by the guide vanes is widened on the inflow side and is gradually narrowed to limit the flow path, thereby suppressing generation and growth of vortices due to the drainage flow. Further, the effect of the liquid flow on the drain portion side is prevented by the dividing effect between the passage portion of the strip plate and the drain portion by the guide vanes.

A plurality of drainage ports are provided in the width direction of the strip plate,
By providing an independent drainage path for each drainage port, the liquid filling rate in the drainage flow path is improved, the height difference of the drainage liquid level is suppressed, and the width of the drainage volume is reduced. Make the direction uniform.

The treatment liquid flowing out along the surface of the strip plate is
The flow direction is changed by a plurality of guide vanes installed in the longitudinal direction of the strip plate, and the spacing thereof is regulated to suppress the generation of vortices in the flow of the processing liquid passing therethrough. Further, it is possible to smoothly change the flow direction of the liquid by gradually reducing the flow path formed by the guide vanes.

[0018]

【Example】

Embodiment 1 FIG. 1 shows a first embodiment of the present invention, and shows an example in which the present invention is applied to a drainage tank 1 having a drainage port 2 at one end of a drainage structure.

A strip-shaped plate S is lifted and conveyed in the drainage tank 1.
At a right angle to the partition plate 3 surrounding the
Weirs 5 _{1 to} 5 ₃ are provided at the same intervals, and each of them forms an independent drainage reservoir 6 _{1 to} 6 ₄ . And further,
In each of the pools 6 _{1 to} 6 ₄ , drainage channels 7 _{1 to} 7 ₄ that reach the drainage port 2 are formed independently of each other.

As a result, liquid is drained from the pool 6 _{4 in} the part farthest from the drain port 2, and the water level in that part does not exceed the level of the partition plate 3, so that the water is temporarily collected in the pool part. The overflowing processing liquid does not return to the side of the strip plate S, and the shake of the strip plate S due to the occurrence of turbulence does not occur.

In this embodiment, a plurality of weirs 5 _{1 to} 5 _{3 are used.}
The example in which the independent drainage flow paths 7 _{1 to} 7 ₄ are formed in the pools 6 _{1 to} 6 ₄ formed by is explained, but a considerable effect can be obtained even when the independent drainage flow paths are not provided. I was able to.

In addition to this, when independent drainage channels 7 _{1 to} 7 ₄ are formed in the respective pools, it is possible to suppress an increase in the water level of the pool most distant from the drainage port 2.

Embodiment 2 FIG. 2 shows a drainage tank 1 having drainage ports 2 _1, 2 ₂ at both ends.
In addition, separate drain passages 7 _{1 to} 7 ₄ are connected to both drain ports 2 _1,
An example of branching to 2 ₂ and applying is shown. This is the case to form a central weir 5 ₂ to the bottom of the reservoir tank, the waste liquid reservoir and branches to the respective drain port 2 _1, 2 _2. For this embodiment, also becomes uniform drainage of the waste liquid reservoir ₆₁ through _4, and the water level of the central portion is also reduced, preventing backflow into the strip-shaped plate S side from the drainage reservoir at all can do.

Example 3 FIG. 3 shows an example in which the guide plate 10 is arranged directly above the partition plate 3 provided in the drainage tank 1 by a cross-sectional view of the strip plate S as seen from the side.

In the figure, the passage plate 8 of the central strip S is shown.
In addition, the treatment liquid L such as a plating liquid rises on both sides of the strip S. The drainage tank 1 is provided with partition plates 3 on both sides of the strip-shaped plate S at regular intervals with respect to both surfaces thereof, and forms a drainage pool 6 between the drainage tank 1 and the drainage tank 1. Reference numeral 9 denotes a guide portion arranged immediately above the partition plate 3, which is formed by a plurality of (three examples are shown) guide plates 10 and the distance d between the respective guide plates 10 is equal to the passing plate. The portion 8 side is wide and the pool 6 side is narrow.

As a result, the partition 6 is passed over and the pool 6 is formed.
Since the flow path is narrowed, the drainage flowing into the flow-through flows down while maintaining the rectified state without entraining air during the flow-down process, whereby the treatment liquid L on the plate passing portion 8 side is discharged. Flow, especially at the top of the partition plate 3,
The flow of the processing liquid L is not disturbed, and the strip plate S in the passing plate is not vibrated. The pressure fluctuation caused by the liquid flow is prevented, and the displacement and vibration of the strip are suppressed.

Embodiment 4 FIG. 4 is a plan view showing a structure in which the weir 5 and the independent flow path 7 shown in Embodiment 1 are applied to the drainage mechanism in which the guide plate 8 shown in FIG. 3 is arranged.

The drawing further shows the structure of a guide portion 9 formed from a plurality of guide plates 10 formed immediately above the partition plate 3 for forming the pool 6 of the drainage liquid from the side of the passing plate portion 8. It is clearly shown. A plurality of weirs 5 _{1 to} 5 ₄ are attached to the pool 6 side of the partition plate 3, and the drainage port 2 of the tank 1 is further provided in the pools 6 _{1 to} 6 ₅ formed by the respective weirs. Drainage channels 7 _{1 to} 7 ₅ are formed to guide the drainage to. As a result, the drainage flow as shown by the arrow is formed, and the drainage from any of the pools is eliminated from the drainage 2 without variation in the drainage occurring in the width direction. Combined with the effect of the guide portion 9 described above, the treatment liquid in the plate passing portion 8 is discharged without any stirring disturbance, and the strip plate S does not form a runout.
Smooth transportation is ensured.

In each of the above embodiments, the strip-shaped plate to be processed is conveyed in a substantially vertical direction, and the processing liquid is applied to both surfaces thereof. However, the present invention is applied in the horizontal direction. The present invention can be applied to a strip-shaped plate that is conveyed in a tilted manner and also to a single-sided process.

Hereinafter, these examples will be described.

Embodiment 5 FIG. 5 shows an example applied to a drainage structure of a processing apparatus for a belt-shaped plate S to be processed which is conveyed while being inclined in the horizontal direction.

As shown in the figure, the drainage tank 1 is provided with a weir 5 which is higher than the upper end surface of the cutting plate 3. Thereby, the strip material S supplied from the strip material supply roll R ₁
Is treated by the treatment liquid L supplied from the liquid supply port 11, and the drainage after treatment is higher than the upper end surface of the cutting plate 3 by the weir 5.
The liquid is temporarily collected in the drainage pool 6 formed by the above, and then discharged.

As a result, a large amount of the supplied processing liquid can be smoothly discharged, as in the case where the strip-shaped plate S is conveyed in the vertical direction, as shown in the first to fourth embodiments. Generation of vibration of the strip plate due to stirring of the liquid that is generated is suppressed.

Sixth Embodiment FIG. 6 shows an example applied to a structure for discharging a processing liquid used for processing one outer surface of a belt-like plate S that is carried into the plate passing portion 8 along a carrying drum D.

As shown in the figure, the drainage tank 1 is provided with a weir 5 which is higher than the upper end surface of the cutting plate 3. As a result, the strip-shaped material S transported into the plate passing portion 8 along the transport drum D is treated with the processing liquid L supplied from the liquid supply port 11.
The processed drainage is temporarily collected in a drainage pool 6 formed by a weir 5 formed higher than the partition plate 3 on the side opposite to the liquid supply port 11 of the transport drum D, Then it is discharged. As a result, a large amount of the supplied processing liquid can be smoothly discharged, and a drainage structure that suppresses the vibration of the strip plate due to the stirring of the liquid generated during the discharge is formed.

[0036]

The present invention has the following effects.

(1) The pressure fluctuation caused by the liquid flow is prevented, the displacement and vibration of the strip are suppressed, and the displacement and vibration of the strip plate are prevented, whereby contact with the flow path wall can be prevented and the strip Vibration and wrinkles can be prevented.

(2) Variations in the liquid level in the pool portion on the drainage reservoir side of the partition plate are alleviated, the height of the partition plate can be suppressed, and the drainage device, and thus the entire processing apparatus, can be made smaller in volume.

(3) The pressure fluctuation and the liquid level fluctuation caused by the liquid flow are prevented, and the fluctuation of the flow velocity distribution in the strip width direction on the passage side is suppressed, thereby preventing the fluctuation of the treatment of the strip plate due to the fluctuation of the flow velocity. can do.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention, showing an example in which the present invention is applied to a drainage tank having a drainage port only at one end.

FIG. 2 shows a second embodiment of the present invention, showing an example in which the present invention is applied to a drainage tank having drainage ports at both ends.

FIG. 3 shows a third embodiment of the present invention, showing an example in which a guide plate is arranged directly above a partition plate.

FIG. 4 shows a fourth embodiment of the present invention, showing an example in which the partition plate is provided with a dividing dam in the drainage mechanism in which the guide plate is arranged directly above the partition plate shown in FIG.

FIG. 5 shows a fifth embodiment of the present invention, showing an example applied to a drainage mechanism in a processing apparatus in which a strip plate is transported in a substantially horizontal direction.

FIG. 6 shows a sixth embodiment of the present invention and shows an example applied to a drainage mechanism in an apparatus that performs liquid treatment on only one surface of a belt-shaped plate to be conveyed.

FIG. 7 shows a view of a conventional drainage mechanism as viewed from the surface side of a strip plate.

FIG. 8 shows a view of FIG. 5 viewed from the side surface side of the strip plate.

[Explanation of symbols]

1 Drainage tank 2 _, 2 _1, 2 ₂ Drainage port 3 Partition plate 5, 5 _{1 to} 5 ₄ Weir 6, 6 _{1 to} 6 ₅ Drainage reservoir 7, 7 _{1 to} 7 ₅ Drainage channel 8 Passing plate part 9 Guide part 10 Guide plate 11 Liquid supply port S Strip material p Through hole L Treatment liquid LH Liquid level of drainage R ₁ Strip material supply roll R ₂ Strip material delivery roll D Conveyor drum

Claims (6)

[Claims] 1. A drainage port is provided in both width directions or one side width direction of a band-shaped material to be treated, and its upper end is between the partition plate and the inner wall of the tank with a certain distance from the surface of the band-shaped material. In the drainage structure of the belt-shaped material processing apparatus, the partition plate is provided higher than the liquid level of the pool of the formed processing liquid, and a partition plate is provided for separating the passage side of the band plate from the drainage pool side. A drainage structure in a belt-shaped material treating apparatus in which a plurality of weirs higher than the upper end surface of the partition plate are arranged on the reservoir side of the treatment liquid, and a plurality of reservoirs are formed by the plurality of weirs. 2. A drainage port is provided in both widthwise directions or one side widthwise direction of the band-shaped material to be treated, and its upper end is between the partition plate and the inner wall of the tank with a certain distance from the surface of the band-shaped material. In the drainage structure of the belt-shaped material processing apparatus, the partition plate is provided higher than the liquid level of the pool of the formed processing liquid, and a partition plate is provided for separating the passage side of the band plate from the drainage pool side. A weir that is higher than the upper end surface of the partition plate is arranged on the reservoir side of the processing liquid, and a liquid reservoir is formed by the weir, and a plurality of liquid reservoirs are provided with independent drainage paths. Drainage structure in material processing equipment. 3. The strip-shaped material to be processed has drain holes in both width directions or one side width direction, and is provided with a constant distance from the surface of the strip-shaped material so that the strip-shaped plate has a passage side and a drainage reservoir side. In the drainage structure of the belt-shaped material treating apparatus provided with a partition plate for separating the partition plate from each other, a plurality of curved guide plates are provided to cover the partition plate immediately above, and the interval between the guide plates is widened to the plate side. A drainage structure in a belt-shaped material processing device that is gradually narrowed toward the drainage reservoir side. 4. The strip-shaped material to be treated has drain holes in both widthwise directions or one lateral widthwise direction and is spaced from the surface of the strip-shaped material at a constant interval so that the strip-shaped board has a passage side and a drainage-collecting side. In the drainage structure of the belt-shaped material treating apparatus provided with a partition plate for separating the partition plate from each other, a plurality of curved guide plates are provided to cover the partition plate immediately above, and the interval between the guide plates is widened to the plate side. While forming gradually narrower toward the drainage reservoir side, a plurality of weirs higher than the upper end surface of the partition plate are arranged on the reservoir side of the processing liquid of the partition plate, and a plurality of liquid pool parts by the plurality of weirs. And a drainage structure in a belt-shaped material treating apparatus in which independent drainage channels are provided in the plurality of liquid pools. 5. A strip-shaped material having a processing liquid supply port from a position below a strip-passing portion of the strip-shaped material that is conveyed in a substantially horizontal inclined direction, and having a drainage port at the upper end of the strip-shaped material. The drainage structure in the processing apparatus, wherein a partition plate is provided at the upper end of the plate portion to form a drainage reservoir, and a drain higher than the partition plate is provided at the drainage port of the drainage reservoir. Drainage structure in the treatment device for strips. 6. A strip-shaped plate in which a processing liquid supply port is provided at one end of a passage part of a strip-shaped plate that is conveyed along a conveyance drum, and a discharge port for the processing liquid is provided at the other end of the passage plate. A drainage structure in a material processing apparatus, wherein a strip-shaped material in which a drainage reservoir is also formed by a partition plate provided at the passage port side at the drainage port and a weir higher than the partition plate provided outside thereof Drainage structure in the processing equipment of.