JPH0225436B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: The present invention is mainly concerned with cleaning the adhering liquid after pickling and drying in the surface treatment of metal wires.
The present invention relates to a small and compact cleaning/drying device that can perform processing with high efficiency by skillfully utilizing compressed air.

Conventional technology: Conventionally, in order to perform surface treatment on metal wires, for example, the metal wires were pickled to remove foreign matter such as scale attached to the surface. After cleaning, the water is submerged in the cleaning tank where the cleaning water is stored, and the operation is carried out in multiple stages as necessary, such as primary and secondary, and at the position after the final cleaning, the water is removed by spraying air through the ring nozzle. After cutting and drying, it is sent to the next processing step. As a result, the overall size of the equipment increases, the consumption of washing water and air increases, and the amount of wastewater treatment associated with this increases, so treatment equipment is also required, and the overall area occupied by the equipment also increases. Not only does the equipment become expensive, but the operating cost also increases, which contributes to increasing the product price, and improvements are desired.

Purpose of the Invention: The present invention solves the above problems by skillfully utilizing compressed air to spray the cleaning water over the entire circumferential surface of the filament passing through it at localized locations, and also to avoid swirling airflow. It is an object of the present invention to provide a small and compact washing/drying device which can prevent the washing water from adhering to the washing water and perform a drying process by wiping the washing water with the swirling airflow.

Structure of the invention: The present invention includes an air ejector disposed in the center of the unit body, and a linear insertion hole extending orthogonally across the vicinity of the boundary between the throat portion of the ejector and the differential user. The injection nozzle of the ejector is inserted long into the throat part, and the suction chamber is connected to the suction chamber at an appropriate position before and after the position orthogonal to the ejector in the filament insertion hole, and the suction chamber and the ejector differential user A cleaning liquid supply hole is formed in each of the sides at the position where the filament insertion holes intersect with each other, and the cleaning liquid supply hole is connected to a liquid supply pipe, so that the cleaning liquid is drawn from these supply holes and poured onto the filament to be treated.
On the exit side of the filament passage hole, a filament passage hole is bored in the center, and a plurality of air passages are connected tangentially from an air chamber concentric with the filament passage hole to a circular depression provided in a part of the filament passage hole. It has a configuration in which a swirling airflow generating air structure is provided with a through hole.

In the present invention, an exhaust pipe equipped with a wire demister at the tip is attached to the discharge side of the ejector,
A discharge means is provided to separate and discharge gas and liquid.

In addition, in the apparatus of the present invention, in order to further enhance the drying effect of the above-mentioned washing/drying unit, an ejector without a liquid injection/suction part and a separate unit equipped with a swirling airflow generation mechanism are arranged in series to clean the inside of these units. Use in combination so that the striatum to be treated passes through.

Embodiment: Next, an embodiment of the device of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 3, the unit body 1 is a flat rectangular block made of synthetic resin, for example, A suction chamber 11, a throat portion 12, and a differential user portion 13 constituting the ejector 10 are perforated at the position, and the suction chamber 11
A screw is carved into the inner periphery of the opening of the hole forming the hole, and the nozzle attachment piece 15 is screwed into this, and the injection nozzle 14 is inserted from the attachment piece 15 into the throat section with the suction chamber 11 closed. 12, and the length at which the tip of the injection nozzle 14 is inserted into the throat portion 12 can be adjusted and positioned using a nut 16 screwed into the threaded portion of the mounting piece 15. be. Note that the injection nozzle 14
is externally connected from the pressure air supply pipe 30 to the valve 3.
An air supply pipe 31 is connected with the air supply pipe 2 interposed therebetween.

A suitable diameter (generally, the ejector's A through hole 2 for the treated strip (having a diameter larger than the diameter of the throat portion 12) is provided therethrough. Both ends of the through-hole 2 to be treated are threaded holes with a large diameter, and a ceramic guide 3 having a hole somewhat smaller than the diameter of the through-hole 2 is screwed inside on the inlet side. It is fixed by a guide cap screw 4 with a flange, and a swirling airflow generation mechanism 2 is installed on the outlet side.
The main body 21 of 0 is screwed on. Communication holes 5 and 5' communicating with the suction chamber 11 of the ejector 10 are provided between the inlet and outlet sides of the treatment strip insertion hole 2 and the orthogonal positions of the ejector, respectively.

As described above, the swirling airflow generating mechanism 20 has a boss 21' portion screwed into the screw hole 6 portion of the unit body 1, and a bottomed hole is bored so as to form an annular air chamber 22 inside. The air chamber 22 is connected to the main body 21 by screwing it into the opening of the bottomed hole of the main body 21.
1, and a sub-body 23 having a columnar part 23' formed in the first half, and both the main bodies 21, 23
The passage hole 2 for the filament to be processed is aligned in its center with the insertion hole 2 passing through the unit main body 1 and its axis.
4 and 24', and a circular depression 25 is provided at the tip of the sub-body 23 as shown in FIG. A plurality of (four in the embodiment) narrow grooves 26 for pressurized air inflow are formed in the direction to form air ventilation holes, and an air supply pipe 33 is connected to the air chamber 22 at a suitable position on the outer periphery of the main body 21. , are connected to a pressurized air supply pipe via a valve 34. Note that the circular depression 25
The end of the passage hole 26 on the side of the main body 21 opposite to the main body 21 is countersunk to prevent the flow of pressure from becoming inconvenient, and the rear end of the sub-body 23 is provided with the same hole as the entrance side of the insertion hole 2 of the unit main body 1. A ceramic guide 27 and a guide cap screw 28 are attached as shown.

The ejector 10 suction chamber 11 of the unit main body 1 and a position facing each other at a position slightly closer to the throat portion 12 than the maximum diameter portion at the intersection of the differential user 13 and the insertion hole 2 are filled with cleaning liquid. Supply holes 17, 17', and 17' are drilled, and a cleaning liquid supply pipe 19, such as a hose, is connected to each hole through fittings 18, 18', and 18', respectively, to supply cleaning liquid from a cleaning liquid tank or the like. supply, Diff User 1 of Ejector 10
At the third end, an exhaust pipe 40 having a gas-liquid separator such as a wire demister 41 installed inside the tip is attached to the unit body 1, so that the cleaning liquid can be separated from the exhaust gas and treated.

Next, to explain the operation of the apparatus of the present invention, for example, if a metal wire as the filament to be treated A is sent out from a pickling process and then subjected to a subsequent cleaning process, it is removed from a pickling tank (not shown). This device is placed at the rear position, and the device is installed so that the filament A to be processed can pass through the passage holes 24, 24' in the swirling airflow generation mechanism 20 from the insertion hole 2 of the unit main body 1 at the center of these holes. If the system is moved under tension via guide rollers placed before and after the system, and pressurized air is supplied to each air supply section of the ejector 10 and the swirling airflow generation mechanism 20 through the pressurized air supply piping 30, first, Air ejector 1
By supplying air to the injection nozzle 14 of 0, the inside of the suction chamber 11 becomes negative pressure, and the communication holes 5,
Since the inside of 5' and the insertion hole 2 are both under negative pressure, air is drawn from the ends of the passage holes 4 and 4' that are connected to the inlet and outlet sides of the hole 2, passes through the throat part 12, passes through the differential user 13, and enters the exhaust pipe. 40 and at the same time from the cleaning liquid supply hole 17 connected to the suction chamber 11 and the differential user 13, the cleaning liquid, for example water, is supplied to the ejector 1 through each supply pipe 19 due to the differential pressure with the liquid side.
0 and is injected from the throat part 12 to the filament A moving at an appropriate speed inside the insertion hole 2 riding the air flow, and also from the supply holes 17', 17' on both sides at the relevant point. It will be poured onto the filament A, and the entire circumferential surface of the filament A will be washed at the intersection position with the ejector 10. After the cleaning operation, the liquid is immediately discharged into the exhaust pipe 40, turned into a spray by the demister 41 at the end of the pipe, and the droplets are collected.The pressurized air is released to the atmosphere, and the droplets are It becomes a particle size and is discharged downward, so it does not become atomized.

For such a cleaning operation section, a swirling airflow generation mechanism 2 is provided.
The pressurized air supplied to the annular air chamber 2 inside the
When air is distributed from 2 to a plurality of narrow air holes 26 and flows out to the central circular recess 25, since the air holes 26 are arranged in a tangential direction, the pressure air flows through the circular recess 2.
A high-speed swirling flow flows from inside 5 into the insertion hole 2 through the passage hole 24, and together with the action of the suction force by the ejector 10, it flows against the movement of the filament A, and as a result, it travels inside the hole. The liquid adhering to the surface of the cleaned part of the filament A is sequentially wiped off the entire circumferential surface by passing through the high-speed swirling air current, and moreover, as the filament A advances, it is wiped away by dry air. Therefore, the filament A is finished in a dry state when it is sent out from this device. The wet gas sucked by the ejector 10 in the form of a swirling flow is discharged together with the cleaning gas and liquid, and the liquid is separated by the filter portion, so that no trouble occurs.

Note that the cleaning liquid supplied into the ejector 10 does not require the use of a special pump or the like by connecting the cleaning liquid tank with piping such as a hose so that an appropriate amount of the cleaning liquid is drawn using the suction force of the ejector. (If necessary, pressure may be added to the cleaning liquid and supplied.) If the filaments processed through the cleaning and drying device in this manner are still insufficiently dried, as shown in Figure 6, Units similar to the above-mentioned apparatus without a cleaning liquid supply section are connected in series, and when the unit passes through the ejector 10 of the unit while moving from the insertion hole 2 of the unit through the passage hole 24, the injection nozzle 1 of the unit passes through the ejector 10 of the unit.
The surface of the filament A is blown away by the air induced from the air 3, and the swirling airflow generated by the swirling airflow generation mechanism 20 and flowing counter-currently from the passage hole 24 into the insertion hole 2 causes the filament A to be blown away. By wiping the entire circumferential surface of A, the moisture adhering to the surface is removed, and the dry state is sent out of the device. The ejector 10 and the swirling airflow generating mechanism 20 in this drying unit 1A operate as the air ejector 10 to remove moisture adhering to the filament passing through the insertion hole 2 by injection induction, and to generate the swirling airflow. Since only drying is performed by wiping with air, by using it in conjunction with the previous washing/drying unit, the product will be reliably dried and finished.

Although metal wires have been described above as objects to be processed, in accordance with the spirit of the present invention, even if the material is a bar material as long as the outer diameter is relatively small, the device can be sized to accommodate it. Therefore, the purpose can be achieved without making the whole thing too large. Therefore, the structure is not limited to the above specific example.

In addition, as a passage for generating a swirling airflow that connects the air chamber 22 and the circular depression 25 in the swirling airflow generation mechanism, a ventilation hole 25' is provided in the tip of the sub-body 23 in the tangential direction as shown in FIG. It is also possible to adopt a method of drilling holes in the holes.

Effects of the Invention: As described above, according to the present invention, the cleaning liquid is sucked by the negative pressure generation action of the air ejector, and the cleaning liquid is vigorously sprayed onto the filament passing through the body, and is also poured over the entire circumferential surface. After that, the suction force of the ejector and the swirling airflow generation mechanism are used to wipe the circumferential surface of the filamentous body moving in the narrow through hole with an airflow that swirls at high speed in a countercurrent. Both processing operations, including drying, can be performed at once, eliminating the need for a conventional cleaning tank, significantly reducing equipment costs, requiring extremely small equipment space, and having a simple structure that allows long-term operation without breakdowns. Since only a small volume of pressurized air is consumed for driving and processing, operating costs are low.
Furthermore, since the cleaning liquid and air can be separated, this cleaning liquid can be recovered, which is rational in every respect, and has a great economical effect.

[Brief explanation of drawings]

The drawings show an embodiment of the device of the present invention, in which FIG. 1 is a longitudinal sectional front view of the main part, FIG. 2 is a central longitudinal sectional view of FIG. 1, and FIG. Figure 4 is a diagram showing the operating mode of the cleaning operation section, Figure 5 is a diagram showing the gas flow, Figure 6 is a schematic diagram showing the case where a drying unit is also installed, and Figure 7 is a diagram showing the generation of swirling airflow. It is a figure which shows another example of the swirling flow formation hole in a mechanism. 1... Unit body, 2... Line insertion hole, 5,
5'...Communication hole, 10...Air ejector, 1
DESCRIPTION OF SYMBOLS 1... Suction chamber, 12... Throat part, 13... Diff user, 14... Injection nozzle, 15... Mounting piece, 17, 17'... Cleaning liquid supply hole, 19...
...Cleaning liquid tank, 20...Swirling airflow generation mechanism, 2
1...Main body, 22...Air chamber, 23...Sub-main body,
23'...Cylindrical part, 24, 24'...Passing hole, 2
5... Circular depression, 26... Pressure air inflow narrow groove (air vent), 30... Pressure air supply piping, 40... Exhaust pipe,
41...Demister, A...Striae.

Claims (1)

[Claims] 1. An air ejector is provided in the center of the unit body, and a linear insertion hole is provided that crosses orthogonally near the boundary between the ejector's throat and the differential user, and the ejector's injection nozzle is inserted into the throat. Connect the suction chamber to appropriate positions in the front and back of the position orthogonal to the ejector in the filament insertion hole and the suction chamber so that the suction chamber and the filament insertion hole of the ejector differential user part intersect. A hole through which the cleaning liquid is drawn and poured onto the filament to be treated is provided on each side of the position, and an annular hole with a filament passing hole in the center and an annular hole provided on the outside thereof is provided on the exit side of the filament insertion hole. A filament body characterized in that it is equipped with a swirling airflow generating air structure formed by carving a plurality of air holes connected tangentially to a circular depression provided in a part of the filament passage hole from the air chamber. washing and drying equipment.