KR200378915Y1 - A stainless surface weld cleaning machine - Google Patents

Abstract

The present invention relates to a welding descaling device for preventing the black phenomenon or corrosion of the surface caused by stainless welding.

The constitution of the present invention, the main body 10, the torch handle 20, the ground tongs 40, the flexible connection line 30, but the main body 10 is a weakly acidic chemical for the scale cleaning The chemical liquid tank 110 to be contained, the solenoid valve 120 for controlling the supply of the chemical liquid, the pump 130 for pumping the chemical liquid of the chemical liquid tank, and converts the commercial power supply to a direct voltage and alternating current of a predetermined voltage A voltage generation circuit unit 140 for outputting and a user operation circuit unit 150 for converting and outputting the output voltage of the voltage generation circuit unit, and the torch handle 20 is outputted from the voltage generation circuit unit 140. At the same time the current is connected to the discharge port 212 is formed to discharge the chemical liquid pumped through the pump 130 is provided with an electrode 210 that can be fixed to cover the cleaning fabric 250 to the outside, the flexible connection Line 30 is the voltage generation circuit unit 140 Electrical wiring 310 for electrically connecting the electrode 210 of the torch handle 20 and the chemical liquid supply path 320 for supplying and supplying the chemical liquid pumped by the pump 130 into the torch handle 20. ) Is provided inside, the torch handle 20 is provided with a switch (SW3) for controlling the operation of the pump 130 and the opening of the solenoid valve 120 at the same time.

Description

Welding descaling device {A stainless surface weld cleaning machine}

The present invention relates to a welding descaling device, and more particularly, to a welding descaling device for preventing black phenomenon or corrosion of the surface caused by stainless welding.

In general, the scale and oxide film is generated during the heat treatment or welding process of stainless steel, it is removed by various methods to prevent black phenomenon and corrosion.

As a method of removing a welding scale of stainless steel, there is a method of using a descaling chemical mixed and treated with acidic solutions as disclosed in Korean Patent Application No. 10-1977-3065, and Korean Patent Application No. 10 As disclosed in -1991-6415, there is a method of using a grinding brush, and a scale removing device using an ultrasonic generator is known as disclosed in Korean Utility Model Application No. 20-1998-15907.

The above-described methods are difficult to remove the scale of stainless steel quickly and completely, and there is a need for a new welding scale removing device which improves these problems because of inconvenience of operator to remove partial scale such as spot welding.

The present invention devised by the above-described necessity of the present invention supplies a weakly acidic cleaning chemical to the descaling site and simultaneously flows a current to the descaling site, thereby heating the cleaning chemical and increasing the temperature of the descaling site by electrical activation. It is an object of the present invention to provide a welding descaling device that enables the removal of the weld scale scale quickly and effectively.

The present invention for achieving the above object will be described in detail with reference to the accompanying drawings.

1 is a conceptual view showing the welding descaling device of the present invention, Figure 2 is a perspective view showing the electrode portion of the torch handle, Figure 3 is a circuit diagram of the electrical configuration of the welding descaling device of the present invention.

Referring to FIG. 1, the present invention includes a main body 10, a torch handle 20, an earth tongs 40, and a flexible connection line 30.

The main body 10 includes a chemical liquid tank 110 containing a weakly acidic chemical liquid for scale cleaning, a solenoid valve 120 for controlling the supply of the chemical liquid, a pump 130 for pumping the chemical liquid in the chemical liquid tank, And a voltage generation circuit unit 140 for converting commercial power to output DC and AC of a predetermined voltage, and a user operation circuit unit 150 for converting and outputting the output voltage of the voltage generation circuit unit.

The torch handle 20 has a discharge port 212 for discharging the chemical liquid conveyed through the pump 130 at the same time the current output from the voltage generating circuit unit 140 is connected to the cleaning fabric 250 to the outside The electrode 210 is provided to cover and fix the cover. The electrode 210 is not limited to the shape such that the tip may be sharpened or rounded in addition to the rectangular shape illustrated in FIG. 2. The cleaning fabric 250 may be fixed to the electrode by a separate fixing ring 260 or the like.

The ground clamp 40 is a means for connecting the current output from the voltage generation circuit unit 140 to the conductive base material 50 to be descaled.

The flexible connection line 30 is an electrical wiring 310 for electrically connecting the voltage generating circuit unit 140 and the electrode 210 of the torch handle 20, and the chemical liquid pumped by the pump 130 The torch handle 20 is provided with a chemical solution supply path 320 to supply the inside.

The torch handle 20 is provided with a switch (SW3) for controlling the operation of the pump 130 and the opening of the solenoid valve 120 at the same time.

On the other hand, referring to Figure 3 showing the electrical configuration, the present invention is selectively supplied with an alternating current voltage or a direct current that is a voltage rectified by the alternating current voltage between the earth tongs (50) and the earth tongs, the chemical liquid In the welding scale removal device having a torch handle having an electrode for discharging the cleaning chemical liquid supplied through the solenoid valve 120 and the pump 130 from the tank 110, the first to n-th AC A first transformer T1 outputting the voltages AC 9V, 12V, 20V, and 24V, and a rotary switch RSW for switching the first to nth voltages AC 9V, 12V, 20V, and 24V to be connected. The bridge rectifier circuit BD1 rectifies the first to nth voltages supplied through the rotary switch RSW to DC, and the electrode 210 and the tongs 40 through the rotary switch RSW. Alternating current of the supplied first to nth voltages and output from the bridge rectifying circuit BD1 And a direct current alternating current switching relay B, B1, B1-1, B2, and B2-1 connected to a direct current alternating current switch SW2 for selectively connecting the direct currents of the first to nth voltages. Reference numeral B of the relay is a relay coil side and B1, B1-1, B2, and B2-1 are movable contacts in which a switch connection state is switched by magnetization of the relay coil B, and a reference numeral A is a relay coil side. , A1, A2 and A3 are movable contacts which are switched by magnetization of the relay coil A. In FIG. 3, S is a main switch, F is a fuse, and L is a lamp.

When the switch SW3 provided on the torch handle 20 is turned on, a circuit is configured to supply operating power to the solenoid valve 120 and the pump 130 to supply current and discharge the chemical liquid through the electrode 210. At the same time.

The switch SW1 serves to connect the output of the rear end of the rotary switch RSW. When the switch SW3 is installed together with the switch SW3 as a dual contact on the torch handle 20, the switch SW1 is configured to be turned on and off simultaneously when the user switches the electrode. The power supply to 210 and pump and solenoid valve operation can be performed simultaneously. The switch SW2 is used to switch direct current alternating current.

The relay coil A turns the relay contacts A1 and A2 on and off depending on whether power is supplied, and the relay coil B turns on and off the relay contacts B1 and B2 according to whether the power is supplied (B1-1 and B2-1). Switch between and connect.

As such, when the user turns on the switch SW1 while the switch SW2 is turned off, the DC power supply of the first to nth voltages determined by the rotary switch RSW is connected to the relay contacts B1-1 and B2. It passes between the electrode 210 and the tongs 40 through -1). On the other hand, when the switch SW1 is turned on while the switch SW2 is turned on, the rectified DC power of the first to nth voltages is connected to the electrodes 210 and the tongs 40 through the relay contacts B1 and B2. It flows through.

In addition, when the switch SW3 is turned on together with the switch SW1, the output power of the second transformer T2 is applied to the bridge rectifying circuit BD2 through the relay contact A3 and output by DC. The solenoid valve 120 and the pump P are operated at the same time so that the chemical liquid is discharged to the outlet of the electrode 210 to wet the cleaning fabric 250. In this state, when the user moves the torch handle 20 to wipe the scale with the cleaning fabric 250, the current of the electrode 210 flows to the conductive base material 50 through the chemical liquid wet to the cleaning fabric 250. . Accordingly, the contact portion of the electrode 210 and the conductive base material 50 is electrically activated while being heated, and the chemical liquid is also heated to create an optimal scale removing environment.

When the current flowing through the electrode 210 to the base material 50 is set to alternating current, it is suitable for cleaning the surface of the stainless steel surface and the matte fine grain line, and the current flowing through the electrode 210 to the base material 50 through the direct current. When set, it is suitable for cleaning the surface of shiny glossy surfaces.

On the other hand, the first to n-th voltage is to be increased or decreased per step of 9V, 12V, 20V, 24V, wherein the withstand current value of the first transformer (T1) is 7A or more by our experiment It has been found to be desirable for creating a descaling environment.

Using the welding scale removal device of the present invention, which acts as described above, it is possible to effectively clean the black phenomenon or the corrosion part of the surface caused by stainless welding by cleaning, and then restore and maintain the original stainless performance. It's effective.

On the other hand, the present invention described above can be used for descaling all conductive base materials as well as stainless base materials.

1 is a conceptual view showing a welding descaling device of the present invention,

2 is a perspective view showing the electrode portion of the torch handle;

Figure 3 is a circuit diagram of the electrical configuration of the welding descaling device of the present invention.

Explanation of symbols on the main parts of the drawings

10-main unit

110-Chemical Bath 120-Solenoid Valve

130-Pump 140-Voltage generating circuit

150-User Control Circuit

20-Torch Handle

210-Electrode 212-Outlet

250-cleaning fabric 260-retaining ring

30-Flexible Connection Line

310-Electric wiring 320-Chemical supply

40-Tweezers 50-Conductive Base Material

SW1, SW2, SW3-Switch BD1, BD2-Bridge Rectifier Circuit

RSW-Rotary Switches T1, T2-Transformer

A-relay coil A1, A2, A3-relay movable contact

B-relay coil B1, B1-1, B2, B2-1-relay movable contact,

Claims (4)

Chemical tank containing weakly acidic chemical liquid for scale cleaning, solenoid valve for intermittent supply of the chemical liquid, pump for pumping the chemical liquid in the chemical liquid tank, and for outputting direct current and alternating current of a predetermined voltage by converting commercial power. A main body including a voltage generation circuit unit and a user operation unit for converting the output voltage of the voltage generation circuit unit; A torch handle having an electrode which is connected to a current output from the voltage generating circuit unit and discharges the chemical liquid pumped through the pump and has an electrode which can cover and fix the cleaning fabric to the outside; Earth tongs for connecting the current output from the voltage generating circuit unit to a conductive base material to be descaled; And an electrical wiring for electrically connecting the voltage generation circuit unit and the electrode of the torch handle, and a flexible connection line having a chemical liquid supply path for supplying and supplying the chemical liquid fed by the pump to the torch handle. Welding scale removal device. The apparatus of claim 1, wherein the torch handle is provided with a switch for simultaneously controlling operation of the pump and opening of the solenoid valve. A torch having an earth force, and a DC which is a predetermined AC voltage or a voltage rectifying the AC voltage selectively between the earth tongs, and having an electrode for discharging the cleaning chemical liquid supplied through the solenoid valve and the pump from the chemical tank. In the welding scale removal device having a handle, A transformer for receiving commercial power and outputting the first to nth AC voltages, a rotary switch for switching the first to nth voltages, and connecting the first to nth voltages supplied through the rotary switches to DC. Rectifying bridge rectifying circuit, and selectively connecting the alternating current of the first to n-th voltage supplied through the rotary switch and the direct current of the first to n-th voltage output from the bridge rectifier between the electrode and the earth tongs Welding scale removal device characterized in that it comprises a DC alternating current switching relay connected to the DC alternating current switching switch (SW2). According to claim 3, When the switch (SW3) provided in the torch handle is turned on, the circuit is configured so that the operating power is supplied to the solenoid valve and the pump so that the current supply and the chemical liquid discharge through the electrode at the same time Welding scale removal device.