A welding fume shielding device that is easy to maintain

Abstract

The present invention relates to the field of cleaning and maintenance technology, and specifically to a welding smoke shielding device that is easy to maintain. The device mainly improves the convenience of cleaning and maintenance of a smoking pipe in the welding smoke shielding device by using a connection component and a regulating smoke shielding mechanism; so as to improve the efficiency of its cleaning and maintenance work; on the one hand, the smoking pipe and the connecting port on the device body are connected by a connection component, and on the basis of ensuring the stability of the connection, the disassembly work is also very convenient, which is conducive to its later disassembly, cleaning and maintenance work; further, a regulating smoke shielding mechanism is set at the connection position between the smoking shielding cover and the smoking pipe, so as to filter and collect the smoke as much as possible, reduce the accumulation of impurity particles on the inner wall of the smoking pipe, so as to reduce the burden of subsequent cleaning and maintenance work of the smoking pipe; further improve the efficiency of cleaning and maintenance work, and better meet the actual maintenance work needs.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning and maintenance, and in particular to a welding fume shielding device which is easy to maintain. Background Art

[0002] Welding is a process of connecting two or more metals or thermoplastic materials together, through heating, high temperature or pressure, so that they melt at the joint and form an integral structure. During the welding process, a large amount of metal debris and impurities will be generated. In addition, due to the high temperature during welding, a large amount of harmful smoke and gas will be generated, which needs to be shielded to prevent harm to the health of the workers. To shield the welding smoke, a welding smoke shielding device is needed.

[0003] The existing application document with announcement number CN117816691A discloses a welding smoke shielding device, wherein the scheme drives the inner groove wheel one to rotate by a servo motor, and the inner groove wheel two is rotated under the transmission of the belt, thereby driving the cleaning block and the cleaning roller to rotate and absorb the smoke, and at the same time, the cleaning block and the cleaning roller rotate to clean the inner wall of the fixed ring, so that the smoke and residue enter the barrel body through the arc hollow plate, and then cooperate with the reduction motor to drive the fan blade to rotate, so as to collect the smoke into the blocking box, so that the smoke can be collected quickly, and at the same time, it is avoided that the smoke remains on the inner wall of the fixed ring to cause damage to the equipment, and the service life is improved. In addition, the steel ball slides on the inner side of the mounting ring and cooperates with the rotating connecting rod to drive the hollow plate to rotate, so that the cleaning block and the cleaning roller The rotation direction is adjusted, and when adjusted to a suitable position, the nut is rotated to make the nut and the friction ring squeezed and rubbed to fix, which is convenient for rapid positioning and accurate angle adjustment, and better meets the use requirements.

[0004] For the shielding and absorption of welding smoke, the above scheme replaces the use of a smoking tube to shield and absorb smoke in the prior art, and absorbs smoke by rotating a cleaning block and a cleaning roller, but this brings inconvenience to its subsequent cleaning and maintenance work; the cleaning and maintenance work of the smoking tube in the prior art generally involves dismantling it and cleaning the impurities accumulated on its inner wall for a long time. One end of the smoking tube is connected to the equipment body by a flange, and a shielding cover is provided at the other end. The dismantling and cleaning of the smoking tube is relatively unchanged, and if a corresponding smoke filtration auxiliary structure is provided in the smoking tube to reduce its cleaning pressure, it can better meet its actual use needs. Therefore, it needs to be improved and optimized.

[0005] To this end, the present invention proposes a welding fume shielding device that is easy to maintain to solve the above-mentioned problem. Summary of the invention

[0006] The object of the present invention is to provide a welding fume shielding device that is easy to maintain, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding smoke shielding device that is easy to maintain, comprising a device body, a connecting port, a smoking pipe, a smoking shielding hood, a connecting assembly and an adjustable smoke shielding mechanism; a connecting port is provided on the device body, one end of the connecting pipe is firmly connected to the connecting port through a connecting assembly, and a smoking pipe is provided at the other end of the connecting pipe, and an adjustable smoke shielding mechanism is provided at the other end of the smoking pipe, and an extension port is provided on the smoking shielding hood, and the extension port is also connected to the adjustable smoke shielding mechanism.

[0008] Preferably, the connection group includes a docking ring, a sealing ring gasket, an annular groove, an annular auxiliary slope, an extended support plate, a fastening threaded column, a knob, a spherical auxiliary pressure head, and a threaded hole; the docking ring is fixedly arranged at the end of the connection port, and a sealing ring gasket is sleeved on the outer side wall of the docking ring; the annular groove is arranged on the outer side wall of one end of the docking tube, and an annular auxiliary slope is arranged on one side of the annular groove; the extended support plate is equidistantly fixed on the outer side wall of the connection port, and a threaded hole is arranged in the extended support plate, the threaded hole is threadedly connected to the fastening threaded column, a knob is fixedly arranged on one end of the fastening threaded column, and a spherical auxiliary pressure head is arranged on the other end of the fastening threaded column.

[0009] Preferably, the fastening thread column corresponds to the setting position of the annular groove, and the spherical auxiliary pressure head at one end of the fastening thread column corresponds to the setting position of the annular auxiliary slope.

[0010] Preferably, the smoke-blocking mechanism for regulating comprises a first disc cover, a second disc cover, a connecting foot, a bearing disc body, an installation through-groove, a connecting card slot, a connecting card plate, a fastening screw, a connecting shaft, a connecting threaded groove, an regulating handle, an auxiliary convex body, a positioning circular groove, a positioning latch, an auxiliary round block, an auxiliary spring, a positioning card cone head, a placement groove and a smoke filter auxiliary component; the first disc cover is arranged at one end of the smoking pipe, and the two are arranged in communication, the second disc cover is arranged at one end of the extension port, and the two are arranged in communication, the side positions of the second disc cover and the first disc cover are fixedly provided with connecting feet, and the connecting feet of the two are connected by bolts, the bearing disc body is provided with an installation through-groove, and a connecting card slot is provided at the slot position at one end of the installation through-groove, the installation through-groove is adapted to be plugged into the connecting shaft, and the The connecting slot is adapted to be snapped into the connecting card plate, a connecting threaded groove is provided at one end of the connecting shaft, the fastening screw passes through the connecting card plate and is threadedly connected to the connecting threaded groove, the connecting shaft is plugged into the first disk cover, and a regulating handle is fixedly provided at the other end of the connecting shaft, an auxiliary convex body is fixedly provided on one side of the regulating handle, the positioning circular groove is equidistantly provided on the first disk cover, a positioning pin is movably provided in the auxiliary convex body, an auxiliary round block is fixedly provided at one end of the positioning pin, a positioning cone head is provided at the other end of the positioning pin, an auxiliary round block is provided on the side connected to the positioning pin, and the other end of the auxiliary spring is fixedly provided on the auxiliary convex body, the placement grooves are equidistantly provided in the bearing disk body, and a smoke filter auxiliary component is provided in the placement groove.

[0011] Preferably, the second disk cover and the first disk cover are arranged in corresponding positions and in the same number of groups, and the second disk cover and the first disk cover together form a loading disk box, and the supporting disk body is arranged in the loading disk box and is provided with one.

[0012] Preferably, the positioning pin corresponds to the setting position of the positioning circular groove, the positioning circular grooves are equidistantly arranged in a ring shape on the first disk cover, and the notch size of each positioning circular groove is different, and the notch diameter of the largest positioning circular groove is set equal to the end diameter of the positioning pin, and four positioning circular grooves are equidistantly arranged on the first disk cover.

[0013] Preferably, the end face of the auxiliary protrusion is set to be triangular, and a positioning pin is provided in the auxiliary protrusion; four placement grooves are equidistantly arranged in the supporting plate body.

[0014] Preferably, the smoke filter auxiliary component includes a loading ring body, an auxiliary slot, a carrying ring box, an auxiliary plug-in block, a loading auxiliary rubber ring, a filter hole, a frustum-shaped shell, and an auxiliary through hole; the loading ring body is fixedly arranged on the inner wall of the placement groove, and the auxiliary slots are symmetrically arranged on both sides of the loading ring body, the box opening of the carrying ring box is equidistantly fixed with auxiliary plug-in blocks, the auxiliary plug-in blocks and the auxiliary slots are arranged in corresponding positions and the same number of groups, and the two are adapted to be plugged in, the outer side wall of the carrying ring box is sleeved with a loading auxiliary rubber ring, one end of the carrying ring box is equidistantly arranged with filter holes, the inner side opening position of the filter hole is fixedly arranged with a frustum-shaped shell, and auxiliary through holes are equidistantly arranged on the frustum-shaped shell.

[0015] Preferably, two carrying ring boxes are arranged in the placement groove and are symmetrically arranged with respect to the loading ring body, and the two symmetrically arranged carrying ring boxes form a storage space.

[0016] Preferably, the calibers of the filter holes on the supporting ring box in each placement slot are different.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The welding smoke shielding device designed by the present invention mainly improves the convenience for cleaning and maintenance of the smoking pipe in the welding smoke shielding device through the coordinated use of the set connecting component and the regulating smoke shielding mechanism; so as to improve the efficiency of its cleaning and maintenance work; on the one hand, the smoking pipe and the connecting port on the device body are connected by the connecting component, and on the basis of ensuring the stability of the connection, the disassembly work is also very convenient, which is conducive to its later disassembly, cleaning and maintenance work; secondly, the regulating smoke shielding mechanism is set at the connection position between the smoking shield and the smoking pipe, so as to filter and collect the smoke as much as possible, reduce the accumulation of impurity particles on the inner wall of the smoking pipe, so as to reduce the burden of subsequent cleaning and maintenance work of the smoking pipe; further improve the efficiency of cleaning and maintenance work, and better meet the actual maintenance work needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the right side of the structure connection of the welding fume shielding device of the present invention;

[0020] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram of the structure connection;

[0021] Figure 3 This is a schematic diagram of the left side of the structure connection of the welding fume shielding device of the present invention;

[0022] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram of the structure connection;

[0023] Figure 5It is a schematic diagram of the connection between the connection port, the butt pipe and the local structure of the connection assembly of the present invention;

[0024] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of the structure connection;

[0025] Figure 7 It is a schematic diagram of the explosion front side of the smoking shielding cover and the smoke-controlling and smoke-blocking mechanism structure of the present invention;

[0026] Figure 8 An exploded bottom view of the connection between the smoking shield and the regulating smoke shielding mechanism structure of the present invention;

[0027] Fig. 9 For the present invention Figure 8 A partial enlarged schematic diagram of the structure connection;

[0028] Fig.10 The right side schematic diagram of the smoke shielding cover and the smoke-blocking mechanism structure of the present invention is connected;

[0029] Fig.11 For the present invention Fig.10 A partial enlarged schematic diagram of the structure connection;

[0030] Fig.12 It is a schematic diagram of the connection of the connecting shaft structure in the smoke blocking mechanism of the present invention;

[0031] Fig.13 It is a partial schematic diagram of the connection between the supporting plate and the smoke filter auxiliary component structure of the present invention;

[0032] Fig.14 For the present invention Fig.13 A partial enlarged schematic diagram of the structural connection.

[0033] In the figure: device body 1, connection port 2, butt pipe 3, smoking pipe 4, smoking shield 5, extension port 6, butt ring 701, sealing ring gasket 702, annular groove 703, annular auxiliary slope 704, extension support plate 705, fastening threaded column 706, knob 707, spherical auxiliary pressure head 708, threaded hole 709, first disk cover 801, second disk cover 802, connecting foot 803, bearing disk body 804, installation through groove 805, connecting card slot 806, connecting Clamping plate 807, fastening screw 808, connecting shaft 809, connecting threaded groove 810, regulating handle 811, auxiliary protrusion 812, positioning circular groove 813, positioning latch 814, auxiliary round block 815, auxiliary spring 816, positioning cone head 817, placement groove 818, loading ring body 901, auxiliary slot 902, carrying ring box 903, auxiliary plug block 904, loading auxiliary rubber ring 905, filtering hole 906, frustum shell 907, auxiliary through hole 908. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention are described clearly and completely below. The embodiments of the present invention and all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1-Figure 14 , a welding smoke shielding device that is easy to maintain, including a device body 1, a connecting port 2, a smoking pipe 4, a smoking shielding cover 5, a connecting component and a regulating smoke shielding mechanism; the device body 1 is provided with a connecting port 2, one end of a butt pipe 3 is firmly connected to the connecting port 2 through a connecting component, and the other end of the butt pipe 3 is provided with a smoking pipe 4, the other end of the smoking pipe 4 is provided with a regulating smoke shielding mechanism, and an extension port 6 is provided on the smoking shielding cover 5, and the extension port 6 is also connected to the regulating smoke shielding mechanism; the present invention mainly cooperates with the connection component and the regulating smoke shielding mechanism to provide a welding smoke shielding device that is easy to maintain, The cleaning and maintenance of the smoking pipe 4 in the welding smoke shielding device is more convenient; so as to improve the efficiency of its cleaning and maintenance work; on the one hand, the smoking pipe 4 is connected to the connecting port 2 on the device body 1 through a connecting component, and on the basis of ensuring its stable connection, its disassembly work is also very convenient, which is conducive to its subsequent disassembly, cleaning and maintenance work; secondly, a regulating smoke shielding mechanism is set at the connection position between the smoking shielding cover 5 and the smoking pipe 4, so as to filter and collect the smoke as much as possible, reduce the accumulation of impurity particles on the inner wall of the smoking pipe 4, so as to reduce the burden of subsequent cleaning and maintenance work of the smoking pipe 4.

[0036] Example 2: Based on Example 1, please refer to Figure 5-Figure 6 , the connection group here includes a docking ring 701, a sealing ring gasket 702, an annular groove 703, an annular auxiliary slope 704, an extended support plate 705, a fastening threaded column 706, a knob 707, a spherical auxiliary pressure head 708, and a threaded hole 709; the docking ring 701 is fixedly arranged at the end of the connection port 2, and the outer side wall of the docking ring 701 is sleeved with a sealing ring gasket 702, the annular groove 703 is arranged on the outer side wall of one end of the docking pipe 3, and one side of the annular groove 703 is provided with an annular auxiliary slope 704, extending The extension support plate 705 is fixedly arranged at an equal distance on the outer side wall of the connection port 2, and a threaded hole 709 is arranged in the extension support plate 705, and the threaded hole 709 is threadedly connected to the fastening threaded column 706, and a knob 707 is fixedly arranged at one end of the fastening threaded column 706, and a spherical auxiliary pressure head 708 is arranged at the other end of the fastening threaded column 706; the fastening threaded column 706 here corresponds to the setting position of the annular groove 703, and the spherical auxiliary pressure head 708 at one end of the fastening threaded column 706 corresponds to the setting position of the annular auxiliary slope 704.

[0037] In this embodiment, the smoking pipe 4 is connected to the connecting port 2 on the device body 1 by a connecting assembly. On the basis of ensuring the stability of the connection, the disassembly work is also very convenient, which is conducive to its later disassembly, cleaning and maintenance work. After the connecting pipe 3 is plugged into the connecting port 2, the fastening threaded column 706 is screwed so that one end of the fastening threaded column 706 enters the annular groove 703 and squeezes the annular auxiliary slope 704. While clamping, there is also a downward squeezing tendency for the connecting pipe 3, which further improves the plug-in stability of the connecting pipe 3 and the connecting port 2; when performing dismantling and maintenance, the knob 707 is directly rotated to release the squeezing of the fastening threaded column 706 on the annular auxiliary slope 704. The operation is convenient, and the smoking pipe 4 can be disassembled for cleaning and maintenance.

[0038] Example 3: Based on Example 2, please refer to Figure 7-Figure 14The smoke-blocking mechanism includes a first disk cover 801, a second disk cover 802, a connecting foot 803, a bearing disk body 804, an installation through groove 805, a connecting card groove 806, a connecting card plate 807, a fastening screw 808, a connecting shaft 809, a connecting threaded groove 810, a regulating handle 811, an auxiliary protrusion 812, a positioning circular groove 813, a positioning pin 814, an auxiliary round block 815, an auxiliary spring 816, a positioning card cone head 817, a placement groove 818 and a smoke filter auxiliary component; the first disk cover 801 is arranged at one end of the smoking pipe 4, and the two are connected, the second disk cover 802 is arranged at one end of the extension port 6, and the two are connected, and the second disk cover 802 is connected to the The side positions of both first disk covers 801 are fixedly provided with connecting feet 803, and the connecting feet 803 of the two are connected by bolts, a mounting through slot 805 is provided in the carrier disk body 804, and a connecting card slot 806 is provided at a slot position at one end of the mounting through slot 805, the mounting through slot 805 is adapted to be plugged in with the connecting shaft 809, the connecting card slot 806 is adapted to be plugged in with the connecting card plate 807, a connecting threaded groove 810 is provided at one end of the connecting shaft 809, a fastening screw 808 passes through the connecting card plate 807 and is adapted to be threadedly connected with the connecting threaded groove 810, the connecting shaft 809 is plugged in the first disk cover 801, and the other end of the connecting shaft 809 is fixed A regulating handle 811 is provided, an auxiliary convex body 812 is fixedly provided on one side of the regulating handle 811, a positioning circular groove 813 is equidistantly provided on the first disk cover 801, a positioning pin 814 is movably inserted in the auxiliary convex body 812, an auxiliary round block 815 is fixedly provided on one end of the positioning pin 814, a positioning cone head 817 is provided on the other end of the positioning pin 814, an auxiliary spring 816 is provided on one side of the auxiliary round block 815 connected to the positioning pin 814, the other end of the auxiliary spring 816 is fixedly provided on the auxiliary convex body 812, a placement groove 818 is equidistantly provided in the bearing disk body 804, and a smoke filter auxiliary component is provided in the placement groove 818; the second disk here The cover 802 is set in a corresponding position to the first disk cover 801 and has the same number of sets. The second disk cover 802 and the first disk cover 801 together form a loading disk box. The supporting disk body 804 is set in the loading disk box and is provided with one; the positioning pin 814 here corresponds to the setting position of the positioning circular groove 813. The positioning circular grooves 813 are equidistantly arranged in a ring shape on the first disk cover 801, and the slot size of each positioning circular groove 813 is different, and the slot diameter of the largest positioning circular groove 813 is set equal to the end diameter of the positioning pin 814. Four positioning circular grooves 813 are equidistantly arranged on the first disk cover 801; four placement grooves 818 are equidistantly arranged in the supporting disk body 804.

[0039] The smoke filter auxiliary component here includes a loading ring body 901, an auxiliary slot 902, a carrying ring box 903, an auxiliary plug-in block 904, a loading auxiliary rubber ring 905, a filter hole 906, a frustum-shaped shell 907, and an auxiliary through hole 908; the loading ring body 901 is fixedly arranged on the inner wall of the placement groove 818, and the auxiliary slots 902 are symmetrically arranged on both sides of the loading ring body 901, and the box opening of the carrying ring box 903 is equidistantly fixed with auxiliary plug-ins 904, the auxiliary plug-ins 904 and the auxiliary slots 902 are arranged at corresponding positions and have the same number of groups, and the two are adapted to be plugged in, the outer side wall of the carrying ring box 903 is sleeved with a loading auxiliary rubber ring 905, one end of the carrying ring box 903 is equidistantly arranged with filter holes 906, the inner side opening position of the filter hole 906 is fixedly arranged with a frustum-shaped shell 907, and auxiliary through holes 908 are equidistantly arranged on the frustum-shaped shell 907.

[0040] In this embodiment, a smoke-blocking mechanism is mainly arranged at the connection position between the smoking shield 5 and the smoking pipe 4 to filter and collect smoke as much as possible and reduce the accumulation of impurity particles on the inner wall of the smoking pipe 4, so as to reduce the burden of subsequent cleaning and maintenance of the smoking pipe 4. The supporting plate 804 is driven to rotate by the regulating handle 811. An auxiliary protrusion 812 is arranged on the side wall of the regulating handle 811, and the end face of the auxiliary protrusion 812 is arranged in a triangle shape, and a positioning pin 814 is arranged in the auxiliary protrusion 812; its purpose is, on the one hand, to arrange the positioning pin 814 on the auxiliary protrusion 812, and the clamping connection of one end of the positioning pin 814 with the positioning circular groove 813 can provide a positioning function for the regulating handle 811, that is, to position the supporting plate 804; on the other hand, the end face of the auxiliary protrusion 812 is arranged as the tip of the triangle, which is equivalent to an indication function, and rotating the regulating handle 8 11 reaches the corresponding positioning circular groove 813, and at the same time, the placement groove 818 at the corresponding position on the supporting disc body 804 reaches the pipe mouth position of the smoking pipe 4; another auxiliary protrusion 812 is also equivalent to a rotation auxiliary structure for the regulating handle 811, which is convenient for the rotation of the regulating handle 811; wherein the calibers of the filter holes 906 on the supporting ring box 903 in each placement groove 818 here are different, and the pore sizes of the filter holes 906 on the supporting ring box 903 in each placement groove 818 are also different, which is equivalent to providing a control auxiliary effect during the smoking process; when the auxiliary protrusion 812 reaches and points to the large-diameter positioning circular groove 813, at the same time, the supporting ring box 903 equivalent to the large-diameter filter hole 906 reaches the pipe mouth position of the smoking pipe 4, and this operation process is equivalent to a gear control component, which is convenient for the staff to operate.

[0041] Here, two carrying ring boxes 903 are arranged in the placement groove 818, and are symmetrically arranged with respect to the loading ring body 901, and the two symmetrically arranged carrying ring boxes 903 form a storage space, which has a corresponding storage function for the impurity particles entering the storage space, so that the impurity particles can stay on the carrying ring box 903 as much as possible, and in the storage space between the symmetrically arranged carrying ring boxes 903, which is convenient for subsequent cleaning and maintenance work.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding fume shielding device that is easy to maintain, characterized in that: The device comprises a device body (1), a connection port (2), a smoking pipe (4), a smoking shield (5), a connection assembly and a regulating and controlling smoke shielding mechanism; the device body (1) is provided with a connection port (2), one end of a butt joint pipe (3) is firmly connected to the connection port (2) via a connection assembly, the other end of the butt joint pipe (3) is provided with a smoking pipe (4), the other end of the smoking pipe (4) is provided with a regulating and controlling smoke shielding mechanism, the smoking shield (5) is provided with an extension port (6), and the extension port (6) is also connected to the regulating and controlling smoke shielding mechanism; The smoke-blocking mechanism comprises a first disk cover (801), a second disk cover (802), a connecting foot (803), a bearing disk body (804), an installation through groove (805), a connecting card groove (806), a connecting card plate (807), a fastening screw (808), a connecting shaft (809), a connecting threaded groove (810), a regulating handle (811), an auxiliary protrusion (812), a positioning circular groove (813), a positioning pin (814), an auxiliary round block (815), an auxiliary spring (816), a positioning card cone head (817), a placement groove (818) and a smoke-filtering auxiliary component; the first disk cover (801) The first and second disc covers (801) are arranged at one end of the smoking pipe (4), and the two are arranged in communication with each other. The second disc cover (802) is arranged at one end of the extension opening (6), and the two are arranged in communication with each other. The second disc cover (802) and the first disc cover (801) are both fixedly provided with connecting feet (803) at the side positions, and the connecting feet (803) of the two are connected by bolts. The supporting disc body (804) is provided with a mounting through groove (805), and a connecting card groove (806) is provided at a groove position at one end of the mounting through groove (805). The mounting through groove (805) is plugged into and adapted to fit the connecting shaft (809). The connecting slot (806) is adapted to be engaged with the connecting card plate (807), one end of the connecting shaft (809) is provided with a connecting thread groove (810), the fastening screw (808) passes through the connecting card plate (807) and is adapted to be threadedly connected with the connecting thread groove (810), the connecting shaft (809) is inserted and arranged in the first disk cover (801), and the other end of the connecting shaft (809) is fixedly provided with a regulating handle (811), one side of the regulating handle (811) is fixedly provided with an auxiliary protrusion (812), and the positioning circular groove (813) is equidistantly arranged on the first disk cover (801). 01), a positioning pin (814) is movably inserted in the auxiliary convex body (812), an auxiliary round block (815) is fixedly provided at one end of the positioning pin (814), a positioning cone head (817) is provided at the other end of the positioning pin (814), an auxiliary spring (816) is provided on the side of the auxiliary round block (815) connected to the positioning pin (814), the other end of the auxiliary spring (816) is fixedly provided on the auxiliary convex body (812), the placement groove (818) is equidistantly provided in the supporting disc body (804), and a smoke filter auxiliary component is provided in the placement groove (818).

2. The welding fume shielding device that is easy to maintain according to claim 1 is characterized in that: The connection assembly comprises a docking ring (701), a sealing ring gasket (702), an annular groove (703), an annular auxiliary slope (704), an extended support plate (705), a fastening threaded column (706), a knob (707), a spherical auxiliary pressure head (708), and a threaded hole (709); the docking ring (701) is fixedly arranged at the end of the connection port (2), and the outer side wall of the docking ring (701) is sleeved with a sealing ring gasket (702); the annular groove (703) is arranged on the butt pipe (3 ), and an annular auxiliary slope (704) is provided on one side of the annular groove (703); the extended support plate (705) is fixedly arranged at an equal distance on the outer wall of the connecting port (2); a threaded hole (709) is provided in the extended support plate (705); the threaded hole (709) is threadedly connected to a fastening threaded column (706); a knob (707) is fixedly provided at one end of the fastening threaded column (706); and a spherical auxiliary pressure head (708) is provided at the other end of the fastening threaded column (706).

3. The welding fume shielding device that is easy to maintain according to claim 2 is characterized in that: The fastening threaded column (706) and the annular groove (703) are arranged at positions corresponding to each other, and the spherical auxiliary pressure head (708) at one end of the fastening threaded column (706) and the annular auxiliary slope (704) are arranged at positions corresponding to each other.

4. The welding fume shielding device that is easy to maintain according to claim 1 is characterized in that: The second disk cover (802) and the first disk cover (801) are arranged at corresponding positions and have the same number of sets. The second disk cover (802) and the first disk cover (801) together form a loading disk box. The supporting disk body (804) is arranged in the loading disk box and is provided with one.

5. The welding fume shielding device that is easy to maintain according to claim 1 is characterized in that: The positioning pin (814) and the positioning circular groove (813) are arranged at positions corresponding to each other. The positioning circular grooves (813) are arranged in an annular shape at equal intervals on the first plate cover (801). The notch size of each positioning circular groove (813) is different. The notch diameter of the largest positioning circular groove (813) is set equal to the end diameter of the positioning pin (814). Four positioning circular grooves (813) are arranged at equal intervals on the first plate cover (801).

6. The welding fume shielding device that is easy to maintain according to claim 1 is characterized in that: The end face of the auxiliary convex body (812) is arranged in a triangular shape, and a positioning latch (814) is arranged in the auxiliary convex body (812); four placement grooves (818) are arranged at equal distances in the supporting disk body (804).

7. The welding fume shielding device that is easy to maintain according to claim 1 is characterized in that: The cigarette filter auxiliary component comprises a loading ring body (901), an auxiliary slot (902), a bearing ring box (903), an auxiliary plug block (904), a loading auxiliary rubber ring (905), a filter hole (906), a frustum shell (907), and an auxiliary through hole (908); the loading ring body (901) is fixedly arranged on the inner side wall of the placement groove (818), and the auxiliary slots (902) are symmetrically arranged on both sides of the loading ring body (901), and the box opening of the bearing ring box (903) is equidistantly fixedly arranged with auxiliary slots (902). An auxiliary plug block (904) is provided at a position corresponding to that of the auxiliary slot (902) and has the same number of groups, and the two are adapted to be plugged in; an outer wall of the carrying ring box (903) is sleeved with a loading auxiliary rubber ring (905); one end of the carrying ring box (903) is equidistantly provided with filter holes (906); a frustum-shaped shell (907) is fixedly provided at the inner opening position of the filter hole (906); and auxiliary through holes (908) are equidistantly provided on the frustum-shaped shell (907).

8. The welding fume shielding device that is easy to maintain according to claim 7 is characterized in that: Two of the carrying ring boxes (903) are arranged in the placement groove (818) and are symmetrically arranged with respect to the loading ring body (901), and the two symmetrically arranged carrying ring boxes (903) form a storage space.

9. The welding fume shielding device that is easy to maintain according to claim 7, characterized in that: The calibers of the filter holes (906) on the supporting ring box (903) in each placement slot (818) are different.

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