CN210755778U - Welding dust collection protective cover with observation hole capable of being automatically opened and closed - Google Patents
Welding dust collection protective cover with observation hole capable of being automatically opened and closed Download PDFInfo
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- CN210755778U CN210755778U CN201921875534.3U CN201921875534U CN210755778U CN 210755778 U CN210755778 U CN 210755778U CN 201921875534 U CN201921875534 U CN 201921875534U CN 210755778 U CN210755778 U CN 210755778U
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- welding
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- electromagnet
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Abstract
The utility model discloses a but welding collection dirt safety cover of observation hole automatic switching belongs to welding auxiliary device field, its characterized in that: comprises a dust hood, an air suction pipe, an air suction fan and an exhaust pipe; the dust hood is of a shell structure with an opening at the bottom and wide bottom and narrow top, is positioned above a welding operation point, and is sealed by glass, and an observation hole is reserved on one side of the dust hood facing to a worker; welding position holes are reserved on two sides of the dust removal cover, so that welding operators can conveniently operate the dust removal cover; the upper part of the smoke dust collecting cover is connected with an air suction pipeline, an air suction vertical pipe and a horizontal pipeline are connected to the inlet of a suction fan through an elbow, and the horizontal pipeline is fixed with the suction fan through a flange plate; the exhaust duct is connected with the outlet of the suction fan. Compared with the prior art have the characteristics of having avoided welding flue gas to welding workman's injury.
Description
Technical Field
The utility model relates to a divisional application of a welding smoke dust removal device (application number: 2019202567503) of the utility model, in particular to a welding dust collection protective cover with an observation hole capable of being automatically opened and closed.
Background
Most of welders work in the open air without any protective measures, particularly the requirements on the strength of a welded structure are high, a welding rod used for welding is a J506 alkaline welding rod, smoke generated by electric welding comprises a large amount of silicon, silicate, manganese, chromium, fluoride and other metal oxides, and the smoke can stimulate respiratory tracts and cause breathing people to feel uncomfortable. In severe cases, welding fume poisoning occurs. Heavy metal particles are precipitated in a trace amount when being inhaled into a lung, a certain amount of heavy metal particles are accumulated after long-time welding operation and inhalation, welding dust and lung are easy to obtain, and no specific treatment measures are provided for the welding dust and lung at present, so that welding dust and smoke on an operation site need to be eliminated fundamentally.
At present, the electric welding operation site mainly adopts two categories of natural ventilation and fan forced ventilation, wherein the natural ventilation has poor ventilation effect due to the influence of weather and site operation environment, so that smoke generated by welding floats upwards and is sucked into the lung by a welding operator through the nasal cavity to cause pneumoconiosis, the fan forced ventilation has better natural ventilation effect but has the defects that the blowing force generated by an ① fan has great influence on the welding quality, welding rods generate partial blowing, electric arcs are unstable, molten iron splashes, air holes and cracks are easily generated in a molten pool, the ② easily generates secondary smoke pollution due to the backflow of smoke blown away by the fan due to the influence of the operation site and wind direction, the ③ fan is generally not far away from the welding operator, and vibration and noise generated by the rotation of the fan greatly damage human bodies, such as headache, dizziness, tinnitus, memory loss, vision reduction and the like.
SUMMERY OF THE UTILITY MODEL
The technical task of the utility model is to provide a welding collection dirt safety cover that observation hole can automatic switching to the not enough of above prior art.
The technical proposal of the utility model for solving the technical problem is that: the utility model provides a welding collection dirt safety cover that inspection hole can automatic switching which characterized in that: comprises a dust hood, an air suction pipe, a suction fan, a current meter and an exhaust pipe; the dust hood is of a shell structure with an opening at the bottom and wide bottom and narrow top, is positioned above the welding operation point, and is provided with an observation hole on the side facing the worker; welding position holes are reserved on two sides of the dust removal cover, so that welding operators can conveniently operate the dust removal cover; the upper part of the smoke dust collecting cover is connected with an air suction pipeline, an air suction vertical pipe and a horizontal pipeline are connected to the inlet of a suction fan through an elbow, and the horizontal pipeline is fixed with the suction fan through a flange plate; the exhaust pipeline is connected with the outlet of the suction fan; the observation hole is provided with a transparent lens and a shading lens, wherein the transparent lens is fixed on the observation hole, one side edge of the shading lens is hinged with the edge of the observation hole, the other side of the shading lens is fixedly provided with a magnet, two electromagnets, namely a first electromagnet and a second electromagnet, are respectively arranged at the upper side and the lower side of the shading lens, after the two electromagnets are electrified, one electromagnet is attracted with the magnet of the lens, and the other electromagnet is repelled with the magnet of the lens; the ammeter is of an electromagnetic mutual inductance type, is placed on a wire of the welding gun, detects current through the ammeter and controls the electrification of the electromagnet, and the shading lens is controlled through the magnetic force of the electromagnet.
The circuit of the electromagnet is connected with a direct current power supply and comprises three branches, wherein the first branch comprises an amplifier and a relay coil KA which are connected in series, the output end of an ammeter is connected with the input end of the amplifier, and the output end of the amplifier is connected with the first branch; the second branch comprises a normally closed relay contact KA-2 and a normally open relay contact KA-4 which are connected in series, and the third branch comprises a normally open relay contact KA-1 and a normally closed relay contact KA-3 which are connected in series; the connection sequence of the normally open contact and the normally closed contact on the two branches is opposite; the two electromagnets YA1 and YA2 are connected in parallel, two ends of each electromagnet are respectively positioned on the second branch and the third branch, and the connection points of the electromagnets are respectively positioned between two contacts on each branch.
The bottom surface of the dust collection cover is 600mm x 600mm square, and the height of the dust collection cover is 400 mm.
And welding position holes of 120mm x 200mm are reserved on two sides of the dust removal cover, and the distance between the welding position holes and the position above the dust removal cover is 150 mm.
The model of the suction fan is L-092, the power is 4KW, and the flow rate is 4080m 3/h.
Compared with the prior art, the utility model discloses following outstanding beneficial effect has:
1. the harm of smoke generated by welding to the respiratory system of welding workers is fundamentally avoided, and the occurrence of pneumoconiosis of the welding workers is effectively avoided;
2. the welding is carried out in the dust hood, ultraviolet rays and splashes generated by the welding are shielded by the dust hood, light radiation and burn and scald are almost completely avoided, and the influence on the hearing of workers due to high noise is avoided because the suction fan is installed far (10 meters);
3. according to the welding condition, the shading lens 8 is automatically opened and buckled, strong light is shielded during welding to protect eyes, and after welding is finished, the condition of a welding piece can be conveniently observed.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural view of the observation hole in embodiment 2 of the present invention.
Fig. 3 is a circuit diagram in embodiment 2 of the present invention.
Detailed Description
The invention is further described with reference to the drawings and the detailed description.
In the embodiment 1, as shown in fig. 1, the present invention comprises a dust hood 4, an air suction pipe 3, a suction fan 2 and an exhaust pipe 1.
The dust collection cover 4 is a shell structure with an opening at the bottom and a wide bottom and a narrow top, is positioned above a welding operation point, has a 600mm x 600mm square bottom surface, and has a height of 400 mm. A viewing hole 10 is formed in the dust cage 4 facing the worker and is sealed with glass. Welding position holes of 120mm x 200mm are reserved on two sides of the dust removal cover, and the distance between the welding position holes and the position 150mm above the dust removal cover is convenient for welding operators to operate.
The upper part of the flue gas dust collection cover 4 is connected with 3 channels of an air suction pipe of DN133, the height of a vertical pipe of the air suction pipe 3 is 1.2M, the vertical pipe of the air suction pipe is connected to the inlet of the suction fan 2 through a 90-degree elbow and a horizontal pipe with the length of 10M, and the flange plate is fixed by 6 bolts with M10 x 40. The model L-092 of the suction fan 2, the 5-power 4KW of the motor and the flow 4080m3/h ensure the use requirement on site. The outlet of the exhaust duct 1 and the outlet of the suction fan 2 are connected by 6 bolts (M10X 40), the exhaust duct 1 DN133 is 8M high, the tail end is connected with a short pipe by a 45-degree elbow by 0.5M, and the outlet is provided with a vertical cut to prevent rainwater from entering.
Through the utility model discloses fundamentally has stopped the flue gas that the welding produced to welding staff respiratory's injury, the effectual emergence of having avoided welder pneumoconiosis, the welding is gone on in dust cage 4, the ultraviolet ray that the welding produced, splash are sheltered from, have avoided ray radiation and burn and scald almost completely by dust cage 4, because the fan 2 installation is far away (10 meters) avoided leading to the fact the influence because of the noise is big to staff's hearing.
In embodiment 2, the main structure of the present embodiment is the same as that of embodiment 1, and only the technical features of the present embodiment different from those of embodiment 1 will be described below, and the technical features same as those of embodiment 1 will not be described again.
As shown in fig. 2, in this embodiment, a transparent lens 11 and a light-shielding lens 8 are disposed on the observation hole 10, wherein the transparent lens 11 is fixed on the observation hole 10, one side edge of the light-shielding lens 8 is hinged to the edge of the observation hole 10, a magnet 7 is fixed on the other side of the light-shielding lens 8, two electromagnets, i.e., a first electromagnet 6 and a second electromagnet 9, are disposed on the upper and lower sides of the light-shielding lens 8, respectively, after the two electromagnets are energized, one of the electromagnets attracts the magnet 7 of the lens, and the other electromagnet repels the magnet 7 of the lens.
The embodiment also comprises an ammeter, wherein the ammeter is in an electromagnetic mutual inductance type, the ammeter is placed on a wire of a welding gun, the wire of the welding gun is electrified after welding is started, the electromagnet is controlled to be electrified after the ammeter detects current, and the shading lens 8 is controlled by the magnetic force of the electromagnet, so that the shading lens 8 covers the observation hole 10 to prevent strong electric welding light from damaging eyes; after welding, the welding gun wire is powered off, the electromagnet is controlled by the ammeter to change the current direction, namely, the magnetic force direction is changed, the shading lens 8 is opened under the magnetic force action of the electromagnet, and only the transparent lens 11 is left in the observation hole 10, so that the condition of a welding part can be clearly observed.
As shown in fig. 3, the circuit of the electromagnet includes three branches, the first branch includes an amplifier and a relay coil KA connected in series, the output end of the ammeter is connected to the input end of the amplifier, and the output end of the amplifier is connected to the first branch. When welding, the welding gun wire is electrified, the ammeter generates weak induction current, the weak induction current enters the input port of the amplifier, and larger current is generated through the amplification effect of the amplifier, so that the first branch is electrified, and the relay coil KA is electrified; when the welding gun is not welded, the welding gun wire is powered off, the branch circuit is powered off along with the welding gun wire, and the relay coil KA is powered off. The second branch comprises a normally closed relay contact KA-2 and a normally open relay contact KA-4 which are connected in series, and the third branch comprises a normally open relay contact KA-1 and a normally closed relay contact KA-3 which are connected in series. The connection sequence of the normally open contact and the normally closed contact on the two branches is opposite. The two electromagnets YA1 and YA2 are connected in parallel, two ends of each electromagnet are respectively positioned on the second branch and the third branch, and the connection points of the electromagnets are respectively positioned between two contacts on each branch. When the relay coil KA loses power, the two normally closed contacts KA-2 and KA-3 are closed, the two normally open contacts KA-1 and KA-4 are disconnected, the two electromagnets YA1 and YA2 are connected with a power supply through the two normally closed contacts KA-2 and KA-3 respectively, and at the moment, the shading lens 8 is in an open state and is not covered on the observation hole 10, as shown by a thick solid line part in fig. 2; when the relay coil KA is electrified, the two normally closed contacts KA-2 and KA-3 are disconnected, the two normally open contacts KA-1 and KA-4 are closed, the two electromagnets YA1 and YA2 are respectively connected with a power supply through the two normally open contacts KA-1 and KA-4, at the moment, the connection direction of the two electromagnets YA1 and YA2 is opposite to that of the previous connection direction, namely, the electromagnets are electrified in the reverse direction, and the magnetic force is reversed, so that the shading lens 8 covers the observation hole 10, as shown by a double-dot chain line in fig. 2.
In the embodiment, the shading lens 8 is automatically buckled on the observation hole 10 during welding to prevent strong light from damaging eyes; after welding, the shading lens 8 is automatically opened so as to clearly observe the welded part.
It should be noted that while the invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various obvious changes can be made therein without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a welding collection dirt safety cover that inspection hole can automatic switching which characterized in that: comprises a dust hood, an air suction pipe, a suction fan, a current meter and an exhaust pipe; the dust hood is of a shell structure with an opening at the bottom and wide bottom and narrow top, is positioned above the welding operation point, and is provided with an observation hole on the side facing the worker; welding position holes are reserved on two sides of the dust removal cover, so that welding operators can conveniently operate the dust removal cover; the upper part of the smoke dust collecting cover is connected with an air suction pipeline, an air suction vertical pipe and a horizontal pipeline are connected to the inlet of a suction fan through an elbow, and the horizontal pipeline is fixed with the suction fan through a flange plate; the exhaust pipeline is connected with the outlet of the suction fan; the observation hole is provided with a transparent lens and a shading lens, wherein the transparent lens is fixed on the observation hole, one side edge of the shading lens is hinged with the edge of the observation hole, the other side of the shading lens is fixedly provided with a magnet, two electromagnets, namely a first electromagnet and a second electromagnet, are respectively arranged at the upper side and the lower side of the shading lens, after the two electromagnets are electrified, one electromagnet is attracted with the magnet of the lens, and the other electromagnet is repelled with the magnet of the lens; the ammeter is of an electromagnetic mutual inductance type, is placed on a wire of the welding gun, detects current through the ammeter and controls the electrification of the electromagnet, and the shading lens is controlled through the magnetic force of the electromagnet.
2. The welding dust collecting protective cover with the automatically opened and closed observation hole of claim 1, wherein: the circuit of the electromagnet is connected with a direct current power supply and comprises three branches, wherein the first branch comprises an amplifier and a relay coil KA which are connected in series, the output end of an ammeter is connected with the input end of the amplifier, and the output end of the amplifier is connected with the first branch; the second branch comprises a normally closed relay contact KA-2 and a normally open relay contact KA-4 which are connected in series, and the third branch comprises a normally open relay contact KA-1 and a normally closed relay contact KA-3 which are connected in series; the connection sequence of the normally open contact and the normally closed contact on the two branches is opposite; the two electromagnets YA1 and YA2 are connected in parallel, two ends of each electromagnet are respectively positioned on the second branch and the third branch, and the connection points of the electromagnets are respectively positioned between two contacts on each branch.
3. The welding dust collecting protective cover with the automatically opened and closed observation hole of claim 1, wherein: the bottom surface of the dust collection cover is 600mm x 600mm square, and the height of the dust collection cover is 400 mm.
4. The welding dust collecting protective cover with the automatically opened and closed observation hole of claim 1, wherein: and welding position holes of 120mm x 200mm are reserved on two sides of the dust removal cover, and the distance between the welding position holes and the position above the dust removal cover is 150 mm.
5. The welding dust collecting protective cover with the automatically opened and closed observation hole of claim 1, wherein: model L-092, power 4KW and flow 4080m of the suction fan3/h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921875534.3U CN210755778U (en) | 2019-02-28 | 2019-02-28 | Welding dust collection protective cover with observation hole capable of being automatically opened and closed |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920256750.3U CN209578555U (en) | 2019-02-28 | 2019-02-28 | A kind of device welding flue gas ash removal |
| CN201921875534.3U CN210755778U (en) | 2019-02-28 | 2019-02-28 | Welding dust collection protective cover with observation hole capable of being automatically opened and closed |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920256750.3U Division CN209578555U (en) | 2019-02-28 | 2019-02-28 | A kind of device welding flue gas ash removal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210755778U true CN210755778U (en) | 2020-06-16 |
Family
ID=68370996
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921875534.3U Expired - Fee Related CN210755778U (en) | 2019-02-28 | 2019-02-28 | Welding dust collection protective cover with observation hole capable of being automatically opened and closed |
| CN201920256750.3U Expired - Fee Related CN209578555U (en) | 2019-02-28 | 2019-02-28 | A kind of device welding flue gas ash removal |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920256750.3U Expired - Fee Related CN209578555U (en) | 2019-02-28 | 2019-02-28 | A kind of device welding flue gas ash removal |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN210755778U (en) |
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2019
- 2019-02-28 CN CN201921875534.3U patent/CN210755778U/en not_active Expired - Fee Related
- 2019-02-28 CN CN201920256750.3U patent/CN209578555U/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN209578555U (en) | 2019-11-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 Termination date: 20210228 |