CN113198271A - Welding fume purification device for movable arm type mechanical workshop - Google Patents

Abstract

The invention discloses a welding fume purification device for a movable arm type mechanical workshop, which comprises an upright post, a lifting device, a guide device, a swing arm device, a ventilation pipeline, a gas collecting hood and a welding fume dust remover, wherein the lifting device is arranged at the upper part of the upright post; the ventilation pipeline is L-shaped pipeline, the lower half part of the ventilation pipeline is installed on the lower part of the stand column, the upper half part of the ventilation pipeline is fixed on the swing arm device, and the upper end and the lower end of the ventilation pipeline are respectively connected with the welding smoke dust remover and the gas collecting cover. The device provided by the invention can be arranged according to the actual needs of a mechanical workshop through modular design, the modules are mutually matched, the welding smoke trapping range can effectively cover the welding processing area of the whole mechanical workshop, the welding smoke trapping effect is good, the effective operation range of the device is wide, and the device is suitable for the requirements of various welding operation workshops.

Description

Welding fume purification device for movable arm type mechanical workshop

Technical Field

The invention belongs to the field of environmental protection, and particularly relates to a movable arm type welding fume purification device for a mechanical workshop.

Background

Welding is one of the most used process technologies in a mechanical workshop, so that the enterprise development and the national economic construction are greatly improved, and meanwhile, the environmental protection problem threatening the human health in the welding operation process is increasingly paid attention by the government and the public.

The portable welding cigarette clarifier and the fixed welding cigarette clarifier of current on the market, they can carry out the manual work to the change of welding station and remove and put and adjust, but the ubiquitous following problem: (1) the dust absorption range of the dust absorption cover is small, the dust absorption efficiency is low, the purification effect is poor, the leakage rate of smoke dust reaches more than 60%, and the scattered welding smoke dust can hurt the health of operators. 2. The workman intensity of labour is high, leads to the workman to be unwilling to use, and when the longer operating mode of welding seam appears, in order to reach dust absorption effect, need constantly to move the suction hood by hand or whole welding fume purifier, the operation personnel operation is very inconvenient, influences welding quality easily simultaneously. 3. The space accessibility is weak, and the application is difficult in a complex space; 4. the energy consumption is high. Based on the above problems, it is very necessary to research a controllable arm type welding fume purification device suitable for a mechanical workshop.

Disclosure of Invention

The invention aims to provide a movable arm type welding fume purification device to solve the technical problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme for solving the problem:

a movable arm type welding fume purification device for a mechanical workshop comprises an upright post, a lifting device, a guide device, a swing arm device, a ventilation pipeline, a gas collecting hood and a welding fume dust remover, wherein the lifting device is installed at the upper part of the upright post, the guide device is installed in the middle of the upright post through a rail and can move up and down along the rail, and the swing arm device is fixedly connected with the guide device and is perpendicular to the upright post; the ventilation pipeline is L-shaped pipeline, the lower half part of the ventilation pipeline is installed on the lower part of the stand column, the upper half part of the ventilation pipeline is fixed on the swing arm device, and the upper end and the lower end of the ventilation pipeline are respectively connected with the welding smoke dust remover and the gas collecting cover.

Further, the lifting device comprises a binding structure, a miniature electric block and a square tube, wherein the miniature electric block is fixed on the upright post through the binding mechanism, and the tail end of a steel wire rope of the miniature electric block is connected with the guiding device; the binding structure is composed of lengthened bolts and two pieces of angle steel, the two pieces of angle steel are fixed on two sides of the plane of the stand column, the lengthened bolts penetrate through the angle steel on the two sides for fastening, and the miniature electric hoist is installed below one piece of angle steel through the square pipe. Furthermore, the guide device comprises a lifting track, two longitudinal angle steels positioned at two sides of the upright post, a transverse angle steel and a steel plate, wherein the transverse angle steel is fixed between the two longitudinal angle steels and is positioned above the steel plate; the transverse rolling bearings are in threaded connection with the longitudinal angle steel through the strip-shaped holes, so that the two transverse rolling bearings can be finely adjusted left and right; the longitudinal rolling bearing is arranged on the longitudinal angle steel, and the outer rolling surface of the longitudinal rolling bearing is attached to the end surface of the vertical column edge; and the transverse angle steel is provided with a lifting bolt, and the lifting bolt is connected with the miniature electric hoist steel wire rope.

Further, the swing arm device comprises a worm gear speed reducer, a swing rotating shaft device and a telescopic arm structure; the worm gear and worm speed reducer is connected with the telescopic arm structure through the swing rotating shaft device and used for driving the telescopic arm structure to rotate around the swing rotating shaft device so as to realize left-right swing in a horizontal plane; the telescopic arm structure realizes front and back extension in a horizontal plane through a ball screw.

Further, the ventilation pipeline 4 comprises a first bent pipe, a first telescopic hose, a second bent pipe, a second telescopic hose and a third bent pipe which are sequentially connected, wherein a first hard pipe is sleeved outside the first telescopic hose, and a second hard pipe is sleeved outside the second telescopic hose; the lower end of the first elbow is connected with the welding smoke dust remover, the lower end of the third elbow is connected with the gas collecting hood, the first hard pipe is fixed on the stand column, and the second hard pipe is fixed below the swing arm device.

Furthermore, the gas collecting channel comprises a flange pipe, a connecting flange and a cover body, and a flange at the upper end of the flange pipe is fixedly connected with a third bent pipe on the ventilation pipeline. The connecting flange is sleeved on the flange pipe and is positioned above the flange edge at the lower end of the flange pipe, and the connecting flange is fixedly connected with the cover opening flange at the top of the cover body.

Further, the welding fume dust remover comprises a dust remover main body, a back flushing system, an ash hopper, a dust remover base and an ash collecting box, wherein the dust remover base is positioned below the dust remover main body; the back blowing system is positioned behind the dust remover main body; the ash hopper is positioned below the dust remover main body;

the dust remover main part includes dust remover skeleton and centrifugal fan and a plurality of section of thick bamboo of straining, and wherein, centrifugal fan installs in the dust remover skeleton through the fan fixed plate of its bottom and the fan connecting plate of side. The filter cartridge is arranged in the framework of the dust remover through the filter cartridge rear pattern plate and the filter cartridge front pattern plate; a filter cartridge cage which is detachably connected with the filter cartridge rear pattern plate is arranged in the filter cartridge and is used for mounting the filter cartridge in the dust remover bone, and a hole is formed in the filter cartridge front pattern plate and is used for mounting and fixing the front end of the filter cartridge;

the side surface of the dust remover main body is provided with an air inlet and an air outlet which are connected with a first bent pipe on the ventilation pipeline; the air outlet is provided with a grid;

a U-shaped sealing ring is arranged between the inner side of the hole on the front faceplate of the filter cylinder and the front end of the filter cylinder.

Furthermore, the back-blowing system comprises a back-blowing air bag, the back-blowing air bag is fixed on the framework of the dust remover through an air bag pipe hoop, and an air outlet of the back-blowing air bag is connected with a pulse valve; and an access door is arranged on a shell of the back blowing system, a pulse blowing controller is fixed on the access door, and the joint of the access door and the dust remover main body is sealed by a rubber strip.

Furthermore, the flange edge on the upper part of the dust hopper is connected with the dust remover main body, and the opening on the upper part of the dust hopper is covered with a v-shaped dust suppression plate.

Furthermore, the dust collecting box is composed of a dust collecting box shell and an inner box body, and the dust collecting box shell is fixedly connected with the dust hopper.

Compared with the prior art, the invention has the following beneficial effects:

(1) the device of the invention can be arranged according to the actual need of a mechanical workshop in a modular design, all modules are mutually matched, the welding smoke trapping range can effectively cover the welding processing area of the whole mechanical workshop, the welding smoke trapping effect is good, and the smoke leakage rate is greatly reduced; the device has wide effective operation range and is suitable for the requirements of various welding operation plants.

(2) Compared with the existing fixed welding fume purifier on the market, the automatic control device can be automatically controlled by the motors of all parts, so that the device can be lifted up and down in a vertical space and can be stretched back and forth and swung left and right in a horizontal space, the gas collecting hood can rotate 360 degrees as required, the sealing performance of the hood body is not influenced, the man-machine combination performance is good, the labor intensity of workers is not increased, and the operation of the workers is convenient; meanwhile, the working space of a welding station is not occupied, and the interference of production working conditions is avoided; in addition, the welding fume purification coverage area is increased, the dust collection performance is good, the welding fume is completely collected, and the welding fume collection efficiency is greatly improved.

(3) Compared with the traditional fixed welding fume centralized processing equipment, the device required by the invention for processing the welding fume in the same mechanical workshop space range is smaller in volume and high in man-machine combination performance, and when a welding worker station moves, a dust hood does not need to be dragged.

Drawings

Fig. 1 is a schematic view of the overall structure of the welding fume purification device of the movable arm type mechanical workshop.

Fig. 2 is a schematic structural diagram of the lifting device.

Fig. 3 is a schematic structural view of the guide device.

Fig. 4 is a partial structural view of the guide device.

Fig. 5 is a schematic structural view of the swing arm device.

Fig. 6 is a partial structural schematic diagram of the swing arm device.

Fig. 7 is a schematic structural view of the swing shaft.

Fig. 8 is a schematic structural view of a ventilation pipe.

Fig. 9 is a schematic structural diagram of the gas collecting hood.

Fig. 10 is a partial structure diagram of the gas collecting hood.

FIG. 11 is a schematic structural view of a welding fume remover.

Fig. 12 is a schematic view of the internal structure of the dust catcher main body.

FIG. 13 is a schematic view of the construction of a filter cartridge cage for a dust collector.

Fig. 14 is a schematic structural view of an ash hopper of the dust collector.

FIG. 15 is a schematic view showing the construction of a dust box of the dust collector.

Wherein: 1-a lifting device; 2-a guiding device; 3-a swing arm device; 4-a ventilation pipeline; 5-gas collecting channel; 6-welding fume dust remover; 11-a binding structure; 12-a miniature electric hoist; 13-square tube; 112-extension bolt; 111-angle steel; 21-longitudinal angle steel; 22-transverse rolling bearing; 23-longitudinal rolling bearing; 24-transverse angle steel; 25-eye screws; 211-a fixed plate; 31-worm gear reducer; 32-swing shaft structure; 33-telescopic arm construction; 34-a ball screw; 321-a swing rotating shaft; 322-a bearing; 323-shaft sleeve; 324-an end cap; 325-small sleeve; 331-a base arm; 332-an extension arm; 333-rolling pair; 3311-a first connecting structure; 3312-horse-shoe shaped rib plate; 3313-square connection plate; 3314-a second connecting structure; 3315-a third connecting structure; 3316-ear shaped junction plate; 341-ball screw motor; 342-a nut seat; 41-first bend pipe; 42-first expansion hose; 43-hard tube No. one; 44-second bend; 45-second expansion hose; 46-hard tube number two; 47-bend line III; 411-connection plate number one; 412-flange connection; 413-a first pipe clamp; 431-a second pipe clamp; 432-steel plate clip; 441-second connecting plate; 461-U shaped pipe hoop; 471-third connecting plate; 51-flanged pipe; a 52-O type rubber ring; 53-connecting flange; 54-a housing; 55-a handle; 541-cover opening flange; 61-a precipitator body; 62-a back-blowing system; 63-ash hopper; 64-a precipitator base; 65-ash collection box; 611-front flower plate of filter cartridge; 612-a fan fixing plate; 613-air outlet; 614-centrifugal fan; 615-a fan connection board; 616-a precipitator skeleton; 617-cartridge rear faceplate; 618-cartridge cage; 619-air inlet; 621-blowback air bag; 622-gas bag pipe hoop; 623-a pulse valve; 624-blowback fixing frame; 625-a back-blowing spray-blowing head; 626-access door; 6111-U-shaped rubber sealing strip; 6112-dust-removing filter cylinder; 6261-pulse control instrument; 6262-rubber sealing strips; 6181-plate; 6182-frame body; 6183-nut; 631-ash funnel flange; 632-v dust suppression boards; 651-dust bin housing; 652-inner box; 653-dust bin handle.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

referring to fig. 1, fig. 1 is a schematic diagram of the general structure of the welding fume purification device for the movable arm type mechanical workshop, and the welding fume purification device comprises an upright post, a lifting device 1, a guide device 2, a swing arm device 3, a ventilation pipeline 4, a gas collecting hood 5 and a welding fume dust remover 6. The lifting device 1 is installed at the upper part of the upright post, the guide device 2 is installed in the middle of the upright post through a rail and can move up and down along the rail, and the swing arm device 3 is fixedly connected with the guide device 2 and is perpendicular to the upright post; the ventilation pipeline 4 is L-shaped pipeline, the lower half part of the ventilation pipeline is arranged at the lower part of the stand column, the upper half part of the ventilation pipeline is fixed on the swing arm device 3, and the upper end and the lower end of the ventilation pipeline 4 are respectively connected with the welding smoke dust remover 6 and the gas collecting hood 5.

Referring to fig. 2, fig. 2 is a schematic structural view of the lifting device. Lifting device 1 is including binding structure 11, miniature electric block 12 and square pipe 13, and wherein, miniature electric block 12 is fixed on the stand through binding mechanism 11, and miniature electric block 12's wire rope end-to-end connection guider 2. Preferably, the binding structure 11 is composed of a lengthened bolt 112 and two angle steels 111, the upright column adopts an i-beam upright column, the two angle steels 111 are fixed on two sides of the plane of the upright column, the lengthened bolts 112 penetrate through the angle steels on two sides for fastening, and the miniature electric hoist 12 is installed below one of the angle steels 111 through the square pipe 13.

Referring to fig. 3 and 4, fig. 3 and 4 are schematic structural views of the guide device. The guide device 2 comprises a lifting track, two longitudinal angle steels 21 positioned at two sides of the upright column, and a transverse angle steel 24 and a steel plate which are fixed between the two longitudinal angle steels 21, wherein the transverse angle steel 24 is positioned above the steel plate, two transverse rolling bearings 22 and one longitudinal rolling bearing 23 are fixed at the upper end and the lower end of each longitudinal angle steel 21, and the two transverse rolling bearings 22 are screwed on the longitudinal angle steels 21 and are attached to two side surfaces of the edge of the upright column of the I-beam; preferably, the transverse rolling bearings 22 are screwed on the longitudinal angle steel 21 through strip-shaped holes, so that the two transverse rolling bearings 22 can be finely adjusted from left to right, and therefore the clamping of the vertical column edges of the I-beam from two sides is achieved. The longitudinal rolling bearing 23 is installed on the longitudinal angle steel 21, and the outer rolling surface of the longitudinal rolling bearing is attached to the end surface of the vertical column edge. Specifically, a through hole is formed in the longitudinal angle steel 21, the longitudinal rolling bearing 23 is screwed on the angle steel through the fixing plates 211 on the two sides and penetrates through the through hole to enable the outer rolling surface of the longitudinal rolling bearing to be attached to the end surface of the vertical column edge of the I-beam, and a gasket is arranged between the longitudinal rolling bearing 23 and the fixing plates 211. In the above scheme, the transverse rolling bearing 22 and the longitudinal rolling bearing 23 respectively roll on the side surface and the end surface of the rib of the i-beam upright post, and the i-beam upright post is used as a lifting rail to complete the up-and-down sliding of the guide device 2. And lifting bolts 25 are arranged on the transverse angle steel 24, and the lifting bolts 25 are connected with the miniature electric hoist 12 steel wire rope, so that the lifting of the guide device 2 by the lifting device 1 can be realized.

Preferably, both the transverse rolling bearings 22 and the longitudinal rolling bearings 23 are of the type of deep groove ball bearings.

Referring to fig. 5, 6 and 7, fig. 5 and 6 are schematic structural views of the swing arm device, and fig. 7 is a schematic structural view of the swing shaft. The swing arm device 3 comprises a worm gear reducer 31, a swing rotating shaft device 32 and a telescopic arm structure 33. The worm gear speed reducer 31 is connected with the telescopic arm structure 33 through the swing rotating shaft device 32, and is used for driving the telescopic arm structure 33 to rotate around the swing rotating shaft device 32 so as to swing left and right in a horizontal plane (the rotating range is 0-180 degrees); the telescopic arm structure 33 is extended and retracted back and forth in the horizontal plane through a ball screw 34, and preferably, the length of the extension and retraction is 1.8-3.2 m. The swing arm device 3 is fixed on the steel plate of the guide device 2.

Specifically, the method comprises the following steps: the swing rotating shaft device 32 comprises a swing shaft 321, a bearing 322 and a shaft sleeve 323, wherein the worm gear reducer 31 is connected with the key slot end of the swing rotating shaft 321, and the shaft sleeve 323 is connected with the telescopic arm structure 33; the telescopic arm structure 33 includes a base arm 331, an extension arm 332 connected thereto, a ball screw motor 341 and a ball screw 34 for extending and retracting the extension arm 332 relative to the base arm 331; wherein, the rear end of the base arm 331 is provided with a first connecting structure 3311, two ends of the swing shaft 321 are provided with a U-shaped rib plate 3312 and a small sleeve 325, and the U-shaped rib plate 3312 is fixedly connected with the first connecting structure 3311 by screws. The base arm 331 is hollow, and a square connecting plate 3313 and a ball screw motor 341 are fixed to the inside of the rear end thereof. The rear end of the ball screw 34 is fixedly connected with the base arm 331 through a second connecting structure 3314, the rear end of the extension arm 332 is inserted into the inner cavity of the base arm 331, and the front end of the ball screw 34 is connected with the rear end of the extension arm 332 through a nut seat 342 of the ball screw; the third connecting structure 3315 is fixed to the front end of the base arm 331, and the second connecting structure 3314 and the third connecting structure 3315 limit the extension arm 332 from the rear end and the front end, respectively. The base arm 331 and the extension arm 332 are contacted through a rolling pair 333, so that the extension arm 332 slides in the cavity of the base arm 331. Two ear-shaped connecting plates 3316 are respectively disposed on two side walls of the base arm 331.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a ventilation pipeline, the ventilation pipeline 4 includes a first elbow 41, a first flexible hose 42, a second elbow 44, a second flexible hose 45, and a third elbow 47, which are connected in sequence, wherein the first flexible hose 42 is sleeved with a first hard pipe 43, and the second flexible hose 45 is sleeved with a second hard pipe 46. The lower end of the first elbow 41 is connected with the welding fume dust remover 6, the lower end of the third elbow 47 is connected with the gas collecting hood 5, the first hard pipe 43 is fixed on the upright post, and the second hard pipe 46 is fixed below the swing arm device 3.

Specifically, a flange edge arranged at the upper end of the first elbow 41 is fixedly connected with the first connecting plate 411 and the first flange connecting port 412, and the first flange connecting port 412 is fixedly connected with the lower end of the first flexible hose 42 through the first pipe clamp 413 in a locking manner. First connecting plate 411 is fixed to the column through steel plate clip 432. A hard tube 43 is sleeved outside the lower end of a flexible hose 42, second pipe hoops 431 are mounted at the upper end and the lower end of the hard tube 43 respectively, and the second pipe hoops 431 are fixed on the stand column through steel plate clamps 432. The upper end of the first flexible hose 42 is connected with a second elbow 44. The second bent pipe 44, the second connecting plate 441 and the second flange connector are connected, and the second flange connector is fixedly connected with the second flexible hose 45. The second hard tube 46 is sleeved at the rear part of the second telescopic hose 45, and the second hard tube 46 is fixedly connected with the ear-shaped connecting plate 3316 of the swing arm device 3 through the U-shaped pipe hoops 461 at the front end and the rear end through screws, so that the connection between the ventilation pipeline 4 and the swing arm device 3 is realized. The third bent pipe 47 and the third connecting plate 471 are fixedly connected with a third flange connecting port, the third flange connecting port is fixedly connected with the second flexible hose 45 in a locking mode through a pipe hoop, and the lower end of the third bent pipe 47 is connected with the gas collecting hood 5.

Preferably, first bend 41, second bend 44 and third bend 47 are all galvanized iron sheet bends.

Referring to fig. 9 and 10, fig. 9 and 10 are schematic structural views of the gas collecting channel. The gas collecting hood 5 comprises a flange pipe 51, a connecting flange 53 and a hood body 54, wherein the flange at the upper end of the flange pipe 51 is fixedly connected with the third bent pipe 47 on the ventilation pipeline 4. The connecting flange 53 is sleeved on the flange pipe 51 and is positioned above the flange edge at the lower end of the flange pipe 51, and the connecting flange 53 is fixedly connected with the cover opening flange 541 at the top of the cover body 54. Preferably, an annular groove is formed on the flange edge of the lower end of the flange pipe 51, an O-ring rubber 52 is arranged in the annular groove and used for sealing a gap between the flange edge of the lower end and the connecting flange 53, and the connecting flange 53 and the cover 54 form a whole body which can rotate 360 degrees by taking the flange pipe 51 as an axis. Preferably, a handle 55 is mounted to the housing 54.

Referring to fig. 11, fig. 11 is a schematic structural view of the welding fume dust collector. Comprises a dust remover main body 61, a back flushing system 62, an ash hopper 63, a dust remover base 64 and an ash collecting box 65. Wherein, the dust collector base 64 is located below the dust collector main body 61 and plays a supporting role. The blowback system 62 is located behind the dust catcher body 61, and blows gas into the dust catcher. The dust hopper 63 is located below the dust collector body 61 to receive dust falling from the dust collector body 61. The dust box 65 is fixed below the dust hopper 63.

Referring to fig. 12, fig. 12 is a schematic view of the internal structure of the dust collector. The duster body 61 includes a duster frame 616, and a centrifugal fan 614 and a plurality of filter cartridges 6112 (preferably two), wherein the centrifugal fan 614 is installed in the duster frame 616 by a fan fixing plate 612 at the bottom thereof and a fan connecting plate 615 at the side thereof. The filter cartridge 6112 is mounted within the duster frame 616 by the cartridge rear faceplate 617 and the cartridge front faceplate 611. A filter cartridge cage 618 detachably connected with the filter cartridge rear flower plate 617 is arranged in the filter cartridge 6112 and used for installing the filter cartridge in the dust remover framework 616, and an included angle of 15 degrees is formed between the filter cartridge cage 618 and the horizontal plane. The front faceplate 611 has a hole for receiving and securing the front end of the filter cartridge 6112.

The dust collector main body 61 is provided with an air inlet 619 and an air outlet 613 on the side, which are connected with the first elbow 41 on the ventilation duct 4. The air outlet 613 is provided with a grille for making the air flow of the outlet air more uniform.

Preferably, a U-shaped sealing ring 6111 is disposed between the inner side of the hole on the filter cartridge front faceplate 611 and the front end of the filter cartridge 6112, and is used for sealing between the filter cartridge 6112 and the dust remover main body 61.

The back-blowing system 62 includes a back-blowing air bag 621, and the back-blowing air bag 621 is fixed on the dust collector framework 616 through an air bag pipe hoop 622. The air outlet of the back-blowing air bag 621 is connected with a pulse valve 623. An access door 626 is arranged on the shell of the back blowing system 62, and a pulse blowing control instrument 6261 is fixed on the access door 626. The connection between the access door 626 and the main body 61 is sealed by a rubber strip 6262.

Referring to fig. 13, fig. 13 is a schematic view of the filter cartridge cage of the dust collector. The cartridge cage 618 includes a plate 6181 with a circular aperture and a frame 6182. A nut 6183 is welded behind the plate 6181 for fixing the filter cartridge end cap. The tail of the frame body 6182 is fixed on the filter cartridge rear flower plate 615.

Referring to fig. 14, fig. 14 is a schematic view of the ash hopper of the dust collector. The flange 631 of the upper portion of the ash hopper 63 is connected to the precipitator main body 61. The upper opening of the ash funnel 63 is covered with a v-shaped dust suppression plate 632, which plays a role in preventing secondary ash raising.

Referring to fig. 15, fig. 15 is a schematic structural view of a dust collecting box of the dust collector. The dust collecting box 65 is composed of a dust collecting box shell 651 and an inner box 652, and the dust collecting box shell 651 is fixedly connected with the dust hopper 63. The end face of the inner box body 652 is provided with a dust collecting box handle 653 for pulling the inner box body 652 out of the dust collecting box shell 651, and the periphery of the end face of the inner box body 652 is sealed by a rubber strip. Preferably, the dust collecting box 65 is integrally inclined at 2-5 degrees, so that an operator can conveniently draw out and send the dust collecting box into the inner box 652 during cleaning work.

The working principle of the embodiment of the invention is as follows:

according to the welding station point that needs to purify, thereby drive the elevating gear 3 through controlling miniature electric hoist 12 and drive guider 2. The lifting operation of the swing arm device 3 is stable through the lifting track formed by the clamping of the rolling bearings 22 and 23 and the angle steel 21 on the column of the factory building in the guide device 2.

The swing shaft 321 is driven to rotate by controlling the worm gear reducer 31, so as to drive the telescopic arm structure 33 to swing left and right. Meanwhile, the ball screw 34 is driven by controlling the ball screw motor 341, the nut seat 342 drives the extension arm 332 to extend back and forth, and the extension arm 332 keeps sliding stably through the six rolling pairs 333, so that the telescopic arm structure 33 extends back and forth.

According to welding cigarette purification demand, control hoisting device 1, guider 2 and swing arm device 3 and drive ventilation pipe 4 synchronous motion during, flexible hose 42/45 freely stretches out and draws back in the lift protection of hard tube 43/46, and hose 42/45 is connected the cooperation with return bend 41/44/47, forms portable and the good ventilation pipe of gas tightness to guarantee to weld cigarette purifier's function and realize.

According to the welding fume station needing to be purified, the direction of the cover body 54 is adjusted by a worker gripping the handle 55, so that the gas collecting hood 5 is at a proper angle relative to the station needing to be purified, the whole connecting body formed by the connecting flange 53 and the cover body 54 rotates by taking the flange pipe 51 as an axis, and meanwhile, the O-shaped rubber ring 52 in the groove at the lower end of the flange pipe 51 is pressed downwards by the weight of the whole connecting body, so that the purpose of instantly rotating and sealing the gas collecting hood 5 is realized.

When indoor welding smoke dust gas needs to be filtered, the centrifugal fan 614 is started, welding smoke dust is sucked from the cover opening of the gas collecting hood 5 and enters the welding smoke dust remover main body 61 from the air inlet 619 through the air duct 4. After the welding smoke enters the turbid air chamber, the welding smoke meets the filter cylinder 6112 inserted obliquely for filtering the smoke, clean air enters the air purifying chamber behind the filter cylinder 6112 and is discharged from the air outlet 613 of the welding smoke dust remover through the centrifugal fan 614 connected with the air purifying chamber, and the filtering and the purification of the smoke are realized. Particles within the filtered soot may remain on the filter cartridge 6112 or fall into the dust collection box 65.

By programming the pulse blowing controller 6261, the electromagnetic valve 623 will inject the gas in the back-blowing air bag 621 into the filter cylinder 6112 through the back-blowing head 625 according to a certain time, so as to inject the dust particles and impurities on the filter cylinder 6112 to fall into the dust funnel 63 and then enter the dust collecting box 65, and the dust can be prevented from overflowing upwards from the dust collecting box 65 for a second time due to the V-shaped dust suppression plate 632. After the work is completed, the inner box 652 of the dust box is pulled out to clean dust particles and foreign substances.

Claims (10)

1. A movable arm type welding fume purification device for a mechanical workshop is characterized by comprising an upright post, a lifting device, a guide device, a swing arm device, a ventilation pipeline, a gas collecting hood and a welding fume dust remover, wherein the lifting device is installed at the upper part of the upright post, the guide device is installed in the middle of the upright post through a rail and can move up and down along the rail, and the swing arm device is fixedly connected with the guide device and is perpendicular to the upright post; the ventilation pipeline is L-shaped, the lower half portion of the ventilation pipeline is installed on the lower portion of the stand column, the upper half portion of the ventilation pipeline is fixed on the swing arm device, and the upper end and the lower end of the ventilation pipeline are respectively connected with the welding smoke dust remover and the gas collecting cover.

2. The welding fume purification device for the movable arm type machinery shop of claim 1, wherein the lifting device comprises a binding structure, a micro electric hoist and a square tube, wherein the micro electric hoist is fixed on the vertical column through the binding structure, and the tail end of a steel wire rope of the micro electric hoist is connected with a guide device; the binding structure comprises extension bolt and two angle steel, and two angle steel are fixed in the plane both sides of stand, and a plurality of extension bolts pass both sides angle steel fastening, and miniature electric block passes through square pipe and installs the below at one of them angle steel.

3. The welding fume purification device for the movable arm type machinery shop of claim 1, wherein the guide device comprises a lifting rail, two longitudinal angle steels positioned at two sides of the upright post, a transverse angle steel fixed between the two longitudinal angle steels and a steel plate, the transverse angle steel is positioned above the steel plate, two transverse rolling bearings and one longitudinal rolling bearing are fixed at the upper end and the lower end of the longitudinal angle steel, and the two transverse rolling bearings are screwed on the longitudinal angle steel and are attached to two side surfaces of the upright post edge of the I-beam; the transverse rolling bearings are in threaded connection with the longitudinal angle steel through the strip-shaped holes, so that the two transverse rolling bearings can be finely adjusted left and right; the longitudinal rolling bearing is arranged on the longitudinal angle steel, and the outer rolling surface of the longitudinal rolling bearing is attached to the end surface of the vertical column edge; and the transverse angle steel is provided with a lifting bolt, and the lifting bolt is connected with the miniature electric hoist steel wire rope.

4. The welding fume purification device for the movable-arm type mechanical workshop as claimed in claim 1, wherein the swing arm device comprises a worm gear speed reducer, a swing rotating shaft device and a telescopic arm structure; the worm gear and worm speed reducer is connected with the telescopic arm structure through the swing rotating shaft device and used for driving the telescopic arm structure to rotate around the swing rotating shaft device so as to realize left-right swing in a horizontal plane; the telescopic arm structure realizes front and back extension in a horizontal plane through a ball screw.

5. The welding fume purification device for the movable arm type machinery shop of claim 1, wherein the ventilation pipeline 4 comprises a first elbow pipe, a first telescopic hose, a second elbow pipe, a second telescopic hose and a third elbow pipe which are connected in sequence, wherein the first telescopic hose is sleeved with the first hard pipe, and the second telescopic hose is sleeved with the second hard pipe; the lower end of the first elbow is connected with the welding smoke dust remover, the lower end of the third elbow is connected with the gas collecting hood, the first hard pipe is fixed on the stand column, and the second hard pipe is fixed below the swing arm device.

6. The welding fume purification device for the movable arm type mechanical workshop as claimed in claim 1, wherein the gas collecting hood comprises a flange pipe, a connecting flange and a hood body, and a flange at the upper end of the flange pipe is fixedly connected with a third bent pipe on a ventilation pipeline; the connecting flange is sleeved on the flange pipe and positioned above the flange edge at the lower end of the flange pipe, and the connecting flange is fixedly connected with the cover opening flange at the top of the cover body.

7. The boom type welding fume purification device for machinery shop of claim 1, wherein the welding fume dust remover comprises a dust remover main body, a back flushing system, an ash hopper, a dust remover base and an ash collecting box, wherein the dust remover base is located below the dust remover main body; the back blowing system is positioned behind the dust remover main body; the ash hopper is positioned below the dust remover main body;

the dust remover main body comprises a dust remover framework, a centrifugal fan and a plurality of filter cylinders, wherein the centrifugal fan is arranged in the dust remover framework through a fan fixing plate at the bottom of the centrifugal fan and a fan connecting plate at the side surface of the centrifugal fan; the filter cartridge is arranged in the framework of the dust remover through the filter cartridge rear pattern plate and the filter cartridge front pattern plate; a filter cartridge cage which is detachably connected with the filter cartridge rear pattern plate is arranged in the filter cartridge and used for installing the filter cartridge in a dust remover bone, and a hole is formed in the filter cartridge front pattern plate and used for installing and fixing the front end of the filter cartridge;

the side surface of the dust remover main body is provided with an air inlet and an air outlet which are connected with a first bent pipe on the ventilation pipeline; the air outlet is provided with a grid;

and a U-shaped sealing ring is arranged between the inner side of the hole in the front flower plate of the filter cylinder and the front end of the filter cylinder.

8. The welding fume purification device for the movable arm type mechanical workshop according to claim 1, wherein the back blowing system comprises a back blowing air bag, the back blowing air bag is fixed on a dust remover framework through an air bag pipe hoop, and an air outlet of the back blowing air bag is connected with a pulse valve; and an access door is arranged on a shell of the back blowing system, a pulse blowing controller is fixed on the access door, and the joint of the access door and the dust remover main body is sealed by a rubber strip.

9. The fume cleaning apparatus for welding machine shop of claim 1, wherein the flange of the upper portion of the dust hopper is connected to the main body of the dust collector, and the upper opening of the dust hopper is covered with a v-shaped dust suppressing plate.

10. The welding fume purification device for the movable arm type machinery shop of claim 1, wherein the dust collection box is composed of a dust collection box shell and an inner box body, and the dust collection box shell is fixedly connected with a dust hopper.

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