CN106695053A - Electric soldering iron with smoke purifying function - Google Patents

Abstract

The invention relates to an electric soldering iron with a smoke purifying function. The electric soldering iron comprises a soldering iron body and a hollow handle. The soldering iron body comprises a bar-shaped soldering iron head, a tubular electric heating core, a tubular inner protection sleeve and a tubular outer protection sleeve. A rear end opening of the outer protection sleeve communicates with a front end opening of the hollow handle. The soldering iron head is installed in the electric heating core. The electric heating core is then installed in the outer protection sleeve. The inner protection sleeve is located in the outer protection sleeve and is arranged at the outer portion of the electric heating core in a sleeving manner. An annular gap exists between the inner protection sleeve and the outer protection sleeve. A front end opening of the outer protection sleeve is a horn-shaped opening. A smoke filtering and purifying device and a micro air pump are arranged in the hollow handle. The micro air pump is installed behind the smoke filtering and purifying device. Two power input lines enter the hollow handle from a rear end opening of the hollow handle, and the electric heating core and the micro air pump are connected between the two power input lines in parallel. According to the electric soldering iron with the smoke purifying function, welding smoke can be effectively purified, in addition, the electric soldering iron is conveniently carried and is not limited by use occasions.

Description

Electric soldering iron with fume purification function

(1) Technical field:

The invention relates to an electric soldering iron, in particular to an electric soldering iron with the function of purifying smoke.

(two), background technology:

Manual welding is a commonly used welding method, and solder wire is widely used as an important welding material in the manual welding process. Solder wire is usually composed of tin alloy and flux. The smoke generated by tin in the wire contains tin oxides, which can cause mechanical irritation to the respiratory tract. Repeated exposure for a long time can easily cause tin pneumoconiosis; lead in the wire and its Compound fumes can cause lead and its compounds to be poisoned; peroxides produced after oxidation of rosin in flux have a strong pungent odor, which can seriously affect human health.

Although the use of lead-free solder can reduce lead emissions, lead-free soldering must use a higher temperature to meet the soldering quality requirements. The increase in temperature will make the chemical reaction of the flux more intense and produce more smoke. The size has also become smaller, increasing the mechanical irritation to the human respiratory tract, and long-term exposure to polluted environments will increase the risk of tin pneumoconiosis.

In order to eliminate the above-mentioned hazards, people have improved the welding technology. Generally speaking, there are two ways: one is to install a smoke hood or exhaust fan independently of the electric soldering iron to isolate or dilute the gas and dust particles generated during the welding process. It cannot purify the flue gas, and it will pollute the atmosphere, and the limitation of this structure is relatively large, so it cannot be carried around at will; Near the head side of the soldering iron, the air outlet of the suction channel is connected to a suction device at the tail of the electric soldering iron or through a pipe. This structure only discharges the welding fume to a place far away from the human face, making the fume It does not directly smoke and roast people's faces, but it does not have the function of disinfection and filtration of smoke, and the smoke discharged into the room will still cause harm to the human body.

(3) Contents of the invention:

The technical problem to be solved by the present invention is to provide an electric soldering iron with fume purification function, which can effectively purify welding fume, is easy to carry, and is not limited by the use occasion.

Technical scheme of the present invention:

An electric soldering iron with fume purification function, comprising a soldering iron body and a hollow handle, the soldering iron body and the hollow handle are connected together, the soldering iron body contains a strip-shaped soldering iron tip, a tubular electric heating core and a tubular outer protective cover, the outer protective cover The front port of the outer protective cover is free, the rear port of the outer protective cover is connected with the front port of the hollow handle, and the rear port of the hollow handle is free. The soldering iron tip is installed inside the electric heating core, and the electric heating core is installed inside the outer protective cover. The soldering iron body also has a tubular inner protective cover, the inner protective cover is located in the outer protective cover, and the inner protective cover is set outside the electric heating core, and there is a ring between the inner protective cover and the outer protective cover. Gap, the annular gap communicates with the inside of the hollow handle, the front port of the outer protective sleeve is a trumpet-shaped opening, the hollow handle is equipped with a smoke filter and purification device and a micro air pump, and the micro air pump is installed behind the smoke filter and purification device; two The power input wire enters the interior of the hollow handle from the rear port of the hollow handle, and the electric heating core and the micro air pump are connected in parallel between the two power input wires.

The flue gas filtering and purifying device contains four treatment layers arranged at the transverse end surface of the hollow handle, and the four treatment layers are a particle filter layer, a particle absorption layer, a disinfection filter layer and an ultraviolet emission layer in sequence from front to back.

The particle filter layer has a front and back two-layer structure. The front layer is a non-woven fabric layer for filtering larger solid particles, and the latter layer is a nanofiber layer for filtering smaller solid particles; the particle absorption layer is also Contains a front and back two-layer structure, the former layer is an activated carbon layer, which is used to absorb toxic and harmful solid particles, and the latter layer is a porous diatom particle layer, which is used to absorb filtered small molecular solid particles; the disinfection filter layer It is a filter screen coated with nano-titanium dioxide coating; the ultraviolet emitting layer contains a circuit board and N ultraviolet lamps arranged on the transverse end face of the hollow handle, and the N ultraviolet lamps are welded on the front surface of the circuit board, and the circuit board is also Ventilation holes are distributed, and the ventilation holes are used for gas circulation in the hollow handle. N ultraviolet lamps are first connected in parallel, and then connected in series to the power input line.

When using this electric soldering iron for welding, the fume generated by soldering enters the annular gap from the trumpet-shaped opening at the front end of the outer protective cover under the suction of the micro air pump, and then reaches the hollow handle through the inner cavity of the outer protective cover. The hollow handle is purified by a flue gas filtration and purification device; when purifying, the large toxic and harmful solid particles in the flue gas are first filtered out by the particle filter layer, and the remaining smaller toxic and harmful solid particles are then absorbed by the particle absorption layer, thereby The toxic and harmful solid particles in the flue gas are completely removed, and then the flue gas is sterilized through the disinfection filter layer, and the nano-titanium dioxide coating in the disinfection filter layer can be decomposed under the ultraviolet radiation emitted by the ultraviolet emitting layer Toxic substances in the flue gas, so that the treated gas is not harmful to the human body, and finally, these gases are discharged from the rear port of the hollow handle.

The flue gas filtration and purification device is set in a thickened part at the front of the hollow handle. The outer diameter of the thickened part is larger than the outer diameter of the other parts of the hollow handle. The four treatment layers pass through the annular barrier on the inner wall of the thickened part. fixed in this bold section.

A power indicator light is arranged on the outer wall of the hollow handle, and the power indicator light is connected in series with the power input line.

A power switch is arranged on the outer wall of the hollow handle, and the power switch is connected in series with the power input line.

The rear port of the hollow handle communicates with an exhaust pipe, and exhaust holes are evenly distributed on the side of the exhaust pipe. The two power input wires pass through the exhaust pipe and enter the interior of the hollow handle. Wrapped with an insulating protective layer.

The outer wall of the inner protective sleeve is provided with at least two annular grooves, and the inner wall of the outer protective sleeve is distributed with raised columns matching the annular grooves, and the ends of the raised columns are snapped into the annular grooves, and each annular There are at least four protruding posts clamped in the groove, and the cooperation between the protruding posts and the annular groove enables the inner protective cover to be firmly installed in the outer protective cover; the front end of the inner protective cover protrudes from the outer protective cover to the outside, However, it does not exceed the front end of the soldering iron tip. At least two threaded through holes are provided on the side of the front end of the inner protective sleeve. Fastening screws are installed in the threaded through holes. The ends of the fastening screws are pushed against the side of the soldering iron tip. Screws are used to fix the tip of the soldering iron to prevent it from falling off.

The power cord of the electric heating core passes through the rear port of the inner protective sleeve, and the inner diameter of the rear port of the inner protective sleeve is smaller than the outer diameter of the electric heating core.

Both the outer protective cover and the hollow handle are of split structure; the outer protective cover is composed of left and right parts, which are connected by screws; the hollow handle is also composed of left and right parts, and the left and right The two parts are connected by screws; this split structure is conducive to the disassembly and maintenance of the internal components of the electric soldering iron.

The front port of the hollow handle is set outside the rear port of the outer protective cover, the material of the hollow handle is plastic, and the material of the inner protective cover and the outer protective cover is metal.

The working process of the electric soldering iron with smoke purification function is as follows: turn on the power switch, the electric heating core starts to energize, and heats the soldering iron tip. When the soldering iron tip touches the solder, the solder will produce a mixture of smoke particles and toxic gases under the action of high temperature. cigarette. While the heating core is powered on, the micro air pump and ultraviolet lamp have also started to work. The smoke particles and toxic gases generated by the solder wire enter the annular gap through the trumpet-shaped opening at the front end of the outer protective sleeve. The trumpet-shaped opening can absorb the mixed white smoke to the greatest extent. , the mixed white smoke enters the hollow handle and is discharged into the air from the exhaust pipe at the rear end of the hollow handle after being treated by the smoke filter and purification device.

Beneficial effects of the present invention:

1. The front end of the soldering iron body of the present invention is provided with a trumpet-shaped opening, which can absorb welding fumes to the maximum extent. There is an annular gap inside the soldering iron body, and the annular gap communicates with the inside of the hollow handle. The hollow handle is equipped with a fume filter and purification device and a micro-air pump, so that the fume generated during welding will be quickly sucked into the annular gap, then enter the interior of the hollow handle for filtration and purification treatment, and finally be discharged from the rear port of the hollow handle; The gas is purified to prevent it from harming the human body, which is safe and environmentally friendly. Moreover, it is easy to carry and is not restricted by the use occasion.

2. The flue gas filtration and purification device of the present invention contains four processing layers, which can not only filter and absorb the toxic solid particles in the welding fume, but also decompose the toxic gas in the welding fume, with more thorough purification and better effect it is good.

(4) Description of drawings:

Fig. 1 is the schematic structural view of the electric soldering iron with flue gas purification function;

Fig. 2 is a schematic diagram of the right view structure of Fig. 1;

Fig. 3 is a schematic diagram of the cross-sectional structure of A-A in Fig. 2;

Fig. 4 is a schematic diagram showing the enlarged structure of part B in Fig. 3;

Fig. 5 is a schematic diagram of the wiring of electrical components inside the electric soldering iron with the function of purifying smoke.

(5) Specific implementation methods:

Referring to Fig. 1 to Fig. 5, in the figures, the electric soldering iron with the function of fume purification includes a soldering iron body and a hollow handle 7, the soldering iron body and the hollow handle 7 are connected together, the soldering iron body includes a strip-shaped soldering iron tip 1, and a tubular electric heating core R and the tubular outer protective cover 4, the front port of the outer protective cover 4 is free, the rear port of the outer protective cover 4 communicates with the front port of the hollow handle 7, the rear port of the hollow handle 7 is free, and the soldering iron tip 1 is installed on the electric heating core R Inside, the electric heating core R is installed inside the outer protective cover 4, and the front end of the soldering iron tip 1 protrudes from the electric heating core R and the outer protective cover 4 to the outside. The soldering iron body also contains a tubular inner protective cover 5, which is located on the outer protective cover 5. In the protective cover 4, and the inner protective cover 5 is set outside the electric heating core R, there is an annular gap 15 between the inner protective cover 5 and the outer protective cover 4, and the annular gap 15 communicates with the hollow handle 7, and the front of the outer protective cover 4 The port 3 is a trumpet-shaped opening, and the hollow handle 7 is provided with a smoke filter and purification device and a micro air pump M, and the micro air pump M is installed behind the smoke filter and purification device; two power input lines 9 enter from the rear port of the hollow handle 7 Inside the hollow handle 7, the electric heating core R and the miniature air pump M are all connected in parallel between two power input lines 9, and the two power input lines 9 are connected to AC 220V mains.

The flue gas filtering and purifying device contains four treatment layers arranged on the transverse end surface of the hollow handle 7, and the four treatment layers are a particle filter layer, a particle absorption layer, a disinfection filter layer 13 and an ultraviolet emission layer in sequence from front to back.

The particle filter layer has a front and rear two-layer structure, the former layer is a non-woven fabric layer 11-1, which is used to filter larger solid particles, and the latter layer is a nanofiber layer 11-2, which is used to filter smaller solid particles Particles; the particle absorption layer also contains front and rear two-layer structures. The front layer is an activated carbon layer 12-1 for adsorbing toxic and harmful solid particles, and the back layer is a porous diatom particle layer 12-2 for filtering. The small molecular solid particles are absorbed; the disinfection filter layer 13 is a filter screen coated with nano-titanium dioxide coating; the ultraviolet emission layer contains a circuit board 14 and 4 ultraviolet lamps L2 arranged on the transverse end face of the hollow handle 7, 4 The ultraviolet lamp L2 is welded on the front surface of the circuit board 14, and the circuit board 14 is also distributed with vent holes 16. The vent holes 16 are used for the gas circulation in the hollow handle 7. The four ultraviolet lamps are connected in parallel first, and then connected in series On the power input line 9.

When using this electric soldering iron for welding, the fume produced by the solder enters the annular gap 15 from the trumpet-shaped opening 3 at the front end of the outer protective cover 4 under the suction of the micro air pump M, and then passes through the inner cavity of the outer protective cover 4 Arriving at the hollow handle 7, the hollow handle 7 is purified by the flue gas filtration and purification device; when purifying, the large toxic and harmful solid particles in the flue gas are first filtered out by the particle filter layer, and the remaining smaller toxic and harmful solid particles are then filtered out. The particle absorbing layer is adsorbed, so that the toxic and harmful solid particles in the flue gas are completely removed, and then the flue gas is sterilized through the disinfection filter layer 13, and the nano-titanium dioxide coating in the disinfection filter layer 13 is exposed to ultraviolet light Under the irradiation of the ultraviolet rays emitted by the emission layer, the toxic substances in the flue gas can be decomposed, so that the treated gas is not harmful to the human body, and finally, these gases are discharged from the rear port of the hollow handle.

The smoke filtering and purifying device is arranged in a section of thickened part 17 at the front of the hollow handle 7. The outer diameter of the thickened part 17 is larger than that of other parts of the hollow handle 7. Four treatment layers pass through the thickened part 17 on the inner wall. The annular barrier piece 18 is fixed in the thickened part 17.

A power indicator light L1 is arranged on the outer wall of the hollow handle 7 , and the power indicator light L1 is connected in series with the power input line 9 .

A power switch K is arranged on the outer wall of the hollow handle 7, and the power switch K is connected in series with the power input line 9.

The rear port of the hollow handle 7 communicates with an exhaust pipe 8, and exhaust through holes are evenly distributed on the side of the exhaust pipe 8, and two power supply input lines 9 pass through the exhaust pipe 8 and enter the hollow handle 7. The exterior of the power input wire 9 is wrapped with an insulating protective layer 19 .

The outer wall of the inner protective cover 5 is provided with two annular grooves 20, and the inner wall of the outer protective cover 4 is distributed with protruding columns 6 matching the annular grooves 20, and the ends of the protruding columns 6 are snapped into the annular grooves. 20, each annular groove 20 is clamped with four protruding columns 6, and the cooperation between the protruding columns 6 and the annular groove 20 enables the inner protective sleeve 5 to be firmly installed in the outer protective sleeve 4; the inner protective sleeve 5 The front end of the outer protective cover 4 protrudes to the outside, but does not exceed the front end of the soldering iron tip 1. Two threaded through holes are arranged on the side of the front end of the inner protective cover 5, and fastening screws 2 are installed in the threaded through holes. The end of fastening screw 2 abuts on the side of soldering iron tip 1, and fastening screw 2 is used for fixing soldering iron tip 1, prevents it from coming off.

The power cord 23 of the electric heating core R passes through the rear port of the inner protective sheath 5 , and the inner diameter of the rear port of the inner protective sheath 5 is smaller than the outer diameter of the electric heating core R.

Both the outer protective cover 4 and the hollow handle 7 are split structures; the outer protective cover 4 is composed of left and right parts, and the left and right parts are connected by screws 21; the hollow handle 7 is also composed of left and right parts. The left and right parts are connected by screws 22; this split structure is beneficial to the disassembly and maintenance of the internal components of the electric soldering iron.

The front port of the hollow handle 7 is set on the outside of the rear port of the outer protective cover 4, the material of the hollow handle 7 is plastic, and the material of the inner protective cover 5 and the outer protective cover 4 is metal.

The working process of the electric soldering iron with flue gas purification function is as follows: turn on the power switch K, the electric heating core R starts to energize, and heats the soldering iron tip 1. When the soldering iron tip 1 touches solder, the solder will produce smoke particles and toxic substances under the action of high temperature. Mixed white smoke of gas. When the heating core R is energized, the miniature air pump M and the ultraviolet lamp L2 have also started to work, and the soot particles and toxic gases produced by the solder wire enter the annular gap 15 through the horn-shaped opening 3 at the front end of the outer protective cover 4, and the horn-shaped opening 3 can The mixed white smoke is absorbed to the maximum, and the mixed white smoke enters the hollow handle 7 and is discharged into the air from the exhaust pipe 8 at the rear end of the hollow handle 7 after being processed by the smoke filter and purification device.

Claims (10)

1. An electric soldering iron with smoke purification function, comprising a soldering iron body and a hollow handle, the soldering iron body and the hollow handle are connected together, the soldering iron body contains a strip-shaped soldering iron tip, a tubular electric heating core and a tubular outer protective cover, the outer The front port of the protective cover is free, the rear port of the outer protective cover communicates with the front port of the hollow handle, and the rear port of the hollow handle is free. The soldering iron tip is installed inside the electric heating core, and the electric heating core is installed inside the outer protective cover. The electric heating core and the outer protective cover protrude to the outside, and the characteristics are: the soldering iron body also contains a tubular inner protective cover, the inner protective cover is located in the outer protective cover, and the inner protective cover is set outside the electric heating core, the inner protective cover and the outer protective cover There is an annular gap between the protective sleeves, and the annular gap communicates with the inside of the hollow handle. The front port of the outer protective sleeve is a trumpet-shaped opening. The hollow handle is equipped with a smoke filtration and purification device and a micro air pump. The micro air pump is installed in the smoke filtration and purification The rear of the device; two power input wires enter the interior of the hollow handle from the rear port of the hollow handle, and the electric heating core and the micro air pump are connected in parallel between the two power input wires. 2. The electric soldering iron with fume purification function according to claim 1, characterized in that: said fume filtration and purification device contains four treatment layers arranged at the transverse end face of the hollow handle, and the four treatment layers are arranged from the front to the The last is the particle filter layer, the particle absorption layer, the disinfection filter layer and the ultraviolet emission layer. 3. The electric soldering iron with flue gas purification function according to claim 2, characterized in that: the particle filter layer has a front and rear two-layer structure, the former layer is a non-woven fabric layer, and the latter layer is a nanofiber layer layer; the particle absorption layer also contains front and rear two-layer structures, the former layer is an activated carbon layer, and the latter layer is a porous diatom particle layer; the disinfection filter layer is a filter coated with nano-titanium dioxide coating; the ultraviolet emission layer It contains a circuit board and N ultraviolet lamps arranged on the transverse end surface of the hollow handle. The N ultraviolet lamps are welded on the front surface of the circuit board, and there are vent holes distributed on the circuit board. The N ultraviolet lamps are connected in parallel first, and then Then connect them in series to the power input line. 4. The electric soldering iron with fume purification function according to claim 2, characterized in that: the fume filtering and purifying device is arranged in a section of thickened part at the front of the hollow handle, and the outer diameter of the thickened part is larger than The outer diameter of the other parts of the hollow handle, the four treatment layers are fixed in the thickened part by the annular barrier sheet on the inner wall of the thickened part. 5. The electric soldering iron with smoke purification function according to claim 1, characterized in that: a power indicator light is provided on the outer wall of the hollow handle, and the power indicator light is connected in series with the power input line. 6. The electric soldering iron with smoke purification function according to claim 1, characterized in that: a power switch is provided on the outer wall of the hollow handle, and the power switch is connected in series with the power input line. 7. The electric soldering iron with flue gas purification function according to claim 1, characterized in that: the rear port of the hollow handle communicates with an exhaust pipe, and exhaust through holes are evenly distributed on the side of the exhaust pipe, Two power input wires pass through the exhaust pipe and enter the hollow handle interior. 8. The electric soldering iron with smoke purification function according to claim 1, characterized in that: the outer wall of the inner protective cover is provided with at least two annular grooves, and the inner wall of the outer protective cover is distributed with annular grooves. The protruding post matching the groove, the end of the protruding post is snapped into the annular groove, and at least four protruding posts are snapped into each annular groove; the front end of the inner protective sleeve protrudes from the outer protective sleeve to the Outside, but not beyond the front end of the soldering iron tip, at least two threaded through holes are provided on the side of the front end of the inner protective sleeve, and fastening screws are installed in the threaded through holes, and the ends of the fastening screws are pushed against the side of the soldering iron tip; The power cord of the electric heating core passes through the rear port of the inner protective sleeve, and the inner diameter of the rear port of the inner protective sleeve is smaller than the outer diameter of the electric heating core. 9. The electric soldering iron with flue gas purification function according to claim 1, characterized in that: the outer protective cover and the hollow handle are both split structures; the outer protective cover is composed of left and right parts, and the hollow The handle is also composed of left and right parts. 10. The electric soldering iron with smoke purification function according to claim 1, characterized in that: the front port of the hollow handle is set outside the rear port of the outer protective cover, the material of the hollow handle is plastic, the inner protective cover and the outer protective cover The protective cover is made of metal.