CN215609984U - Weld cigarette dust collector - Google Patents

Abstract

The utility model discloses a welding fume dust removal device, which comprises at least one filtering device and a fan, and also comprises an air conveying pipe and a back blowing system, wherein the filtering device is arranged in the air conveying pipe, and the fan is arranged behind the filtering device; the dust falling port is arranged on the air conveying pipe, the dust falling port is arranged on the outer side edge of the filtering devices, the dust collecting box is connected below the dust falling port, the dust falling port of each filtering device is far away from the side of the fan and is a front dust falling port, the dust falling port of each filtering device is close to the side of the fan and is a rear dust falling port, and the rear dust falling port is connected with a blind cavity, where the filtering device is located, in the air conveying pipe. This weld cigarette dust collector modularization and hang the setting on workshop upper portion, do not occupy the workshop area, the extravagant normal work that influences workshop normal operation and overhead traveling crane of ground space of not only can be fine, and dust collection efficiency is high moreover, purifying effect is good, and the dust that filter equipment adhered is easily cleared up, is collected.

Description

Weld cigarette dust collector

Technical Field

The utility model relates to the technical field of industrial smoke dust purifying and removing equipment, in particular to a welding smoke dust removing device.

Background

Welding is a common manufacturing process and technology, welding smoke generated in the welding operation process not only harms the health of welding personnel, but also pollutes the environment of the whole welding workshop, so that air emission is very easy to be inconsistent with national standards. Therefore, in order to protect the health of welding personnel, keep the whole welding workshop clean and prevent environmental pollution, a welding fume purification system is generally arranged in the welding workshop, the domestic existing welding fume purification systems are generally divided into three categories, the first category can only extract welding fume from the source when small workpieces are welded, such as an air suction arm, an air suction cover and the like at a welding point, the air suction arm, the air suction cover and the like can only remove dust at a single welding station generally, the fume in the whole welding workshop cannot be controlled, and a welder needs to move the air suction arm for many times in the operation process to achieve the most effective fume capture effect, so the working efficiency is influenced greatly; when large workpieces of the welding fume purification system are welded, welding points are distributed in a complex and scattered mode, the suction arm is frequently moved, manual labor intensity is greatly increased, interference between source extraction and field working conditions such as a travelling crane and a welding fixture is avoided, source processing equipment such as the suction arm and a suction hood cannot be used, and the problem of welding fume purification in actual production cannot be solved. The second type is a ground fixed type, a plurality of welding fume purification systems are distributed around the ground of a welding workshop, wherein each welding fume purification system is provided with an air suction pipe which is arranged vertical to the ground, the fume enters a dust remover through the air suction pipe and is dedusted by the dust remover, then discharged through an exhaust pipe which is arranged vertical to the ground, in order to increase the dust removal efficiency of the dust remover, facilitate the replacement of a filter screen of the dust remover and the collection of cigarette ash, this just often leads to aspiration channel and exhaust pipe higher (about 3 m), and the dust remover is comparatively huge (length, width, height all are about 2 m), finally leads to even every to weld the cigarette clean system and all set up all around the ground in welding shop and also very easily influence the normal work in workshop and overhead traveling crane, and some carelessly still can lead to the overhead traveling crane to take place the mistake with welding cigarette clean system and bump when going, has very big potential safety hazard to also there is very big space waste. The third type is that the welding workshop top distributes the cigarette clean system that welds of a plurality of suspensions in the top of overhead traveling crane simultaneously, and this type of mode can be fine avoid the waste of ground space and influence the normal work of workshop normal operation and overhead traveling crane, but this type of mode often has the filter efficiency not high again because space restriction, and the dust removal effect is not good, the difficult problem of clearing up of dust.

The utility model patent with application number 201710165795.5 discloses a blowing-sucking type dust removal system, which is high in purification efficiency and good in purification effect, but is extremely large in whole volume due to the fact that the blowing-sucking type dust removal system is arranged on the ground of a workshop, normal operation of the workshop and normal operation of a crown block are easily influenced, and great potential safety hazards exist. The utility model with application number 201920191220.5 discloses an efficient welding fume dust-removing component, which is characterized in that a metal hose is connected with the rear part of a dust-removing cover, the rear part of the metal hose is connected with a fume pipeline, an exhaust fan is arranged in the fume pipeline, and a filter screen woven by high-temperature resistant metal wires is arranged in the fume pipeline in front of the exhaust fan; be equipped with downwardly extending's debris collecting pipe on the lower terminal surface of the anterior smoke and dust pipeline of filter screen, this patent can hang the setting and avoid the extravagant normal work that influences normal operation in workshop and overhead traveling crane of ground space, but its filter area and limited, seriously restrict dust removal effect, simple change the filter screen for strain a section of thick bamboo in order to increase filter area, improve dust removal effect, can make the flue gas not draw forth by the air exhauster through straining a section of thick bamboo filtration owing to its own structural constraint, reach not reaching the filtration purpose, this patent still has the difficult problem of clearing up of dust on the filter screen in addition.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a welding fume dust removal device which is modularly suspended at the upper part of a workshop, does not occupy the area of the production workshop, can well avoid the waste of ground space and the influence on the normal operation of the workshop and the normal work of an overhead traveling crane, has high dust removal efficiency and good purification effect, and can easily clean and collect dust adhered to a filter device.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a welding fume dust removal device comprises at least one filtering device, a fan, an air conveying pipe and a back blowing system, wherein the filtering device is arranged in the air conveying pipe, and the fan is arranged behind the filtering device; the dust falling port is arranged on the air conveying pipe, the dust falling port is arranged on the outer edge of the filtering device, and the dust collecting box is connected below the dust falling port, wherein the dust falling port of each filtering device is far away from the side of the fan and is a front dust falling port, the dust falling port of each filtering device is close to the side of the fan and is a rear dust falling port, and the rear dust falling port is connected with a blind cavity in which the filtering device is arranged in the air conveying pipe; the back blowing system is used for conveying high-pressure gas into a space formed by the filtering device and the air conveying pipe; the smoke entering from the air conveying pipe is filtered by the filtering device, then is guided to a gap between the upper part of the filtering device and the air conveying pipe by the fan, and is discharged through an outlet of the fan; the smoke entering the dust collecting box from the dust falling port is guided to the blind cavity by the fan, filtered by the filtering device connected with the blind cavity, guided to the gap between the upper part of the filtering device and the air conveying pipe by the fan and discharged through the outlet of the fan.

Preferably, the filter device is a filter cartridge.

Preferably, the filtering device is at least provided with a front row or a back row or two rows, a front blind plate is arranged between the upper edge of the front side of the front row or the front row of the filtering device and the air conveying pipe, a middle blind plate is arranged between the upper edge of the back side of the front row or the front row of the filtering device and the upper edge of the adjacent filtering device, and a back blind plate with a basically L-shaped or arc-shaped section is arranged between the upper edge of the back side of the back row or the back row of the filtering device and the air conveying pipe.

Preferably, the air delivery pipe is connected with an air inlet pipe, and an air inlet is reserved in the air inlet pipe.

Preferably, the outlet of the fan is connected with the air outlet pipe.

Preferably, an air volume regulator is arranged on the air outlet pipe.

Preferably, the air outlet pipe is perpendicular to the air conveying pipe, a plurality of air outlets with different heights are formed in the air outlet pipe, and the lower end of the air outlet pipe is sealed.

Preferably, the upper part of the dust collecting box is basically in an inverted cone shape, and an openable baffle is arranged in the dust collecting box.

Preferably, the dust collection box is provided with a dust probe or an observation window, and the dust collection box is provided with a dust outlet which can be opened and closed.

Further preferably, the device further comprises a control system, the back-blowing system comprises a high-pressure air pump, a plurality of back-blowing pipelines, electromagnetic valves arranged on the back-blowing pipelines and air blowing nozzles corresponding to the filtering devices in number, the high-pressure air pump is connected with the air blowing nozzles through the back-blowing pipelines, and the fan and the electromagnetic valves are connected with the control system.

In the technical scheme, flue gas enters the air inlet pipe from a plurality of air inlets, the attraction force generated by the fan leads most of the flue gas to a plurality of filter cartridges arrayed in the air conveying pipe for filtering to obtain clean air meeting the environmental standard, the clean air passes through a filter cartridge cavity formed by the filter cartridges and then is led to a gap between the upper part of the filter cartridges and the air conveying pipe by the fan and is discharged through an outlet of the fan, and the filter efficiency of the device is greatly increased and the dust removal effect is greatly increased due to the arrangement of the filter cartridges; the other part of the smoke enters the dust collection box from the dust falling port on the front side and then is led to the blind cavity from the dust falling port on the rear side, the blind cavity is arranged so that the smoke can only be filtered by the filter cartridges on one side or two sides of the blind cavity to obtain clean air, and then is led to a gap between the upper part of the filter cartridge and the air conveying pipe by the fan after passing through the filter cartridge cavity formed by the filter cartridges and is discharged through an outlet of the fan; because each filtering device is connected with the back blowing system, high-pressure gas is output by the blowing nozzle and is instantly sprayed into the filtering device, so that dust particles deposited on the filtering device are quickly separated from the outer surface of the filtering device under the impact and oscillation actions, and blown or shaken dust immediately enters the dust collecting box through the dust falling port on the outer edge of the filtering device, and the dust is simply and conveniently cleaned and collected; because the diameter of the far fan end of the air outlet pipe is smaller than that of the near fan end, and the lower end of the air outlet pipe is sealed, clean air discharged from the air outlet has certain energy, and then passes through the air outlets with different heights to form a plurality of parallel jet flows with consistent advancing directions, the movement and air circulation of air in a workshop are accelerated, and more flue gas is further promoted to enter the air inlet pipe for filtration and the dust removal of the flue gas; the air outlet quantity of the air outlet pipe can be adjusted in real time through the air quantity regulator on the air outlet pipe, so that the flow velocity of the air outlet is adjusted, and the phenomenon that the worker is uncomfortable or the dust removal efficiency is low due to too large flow velocity of the air outlet is avoided; a plurality of cigarette dust collector that weld form a plurality of cigarette dust collector unit modularization, the pertinence hang the setting on workshop upper portion, not only can be fine avoid the waste of ground space and influence the normal work of workshop normal operation and overhead traveling crane, can also the at utmost avoid the wasting of resources.

Drawings

FIG. 1 is a schematic partial sectional view of a front view of the welding fume dust collector;

FIG. 2 is a schematic top view, in cross section, of the welding fume dust collector;

FIG. 3 is a schematic top view of the welding fume remover.

Detailed Description

The utility model will be further explained with reference to the accompanying drawings:

as shown in fig. 1, 2 and 3, the welding fume dust removing device comprises at least one filtering device 10, a fan 20, an air duct 30 and a back-blowing system 40, wherein the filtering device 10 is arranged in the air duct 30, and is generally a filter cartridge 11 with a large filtering area, the fan 20 is arranged behind the filtering device 10 and is connected with the air duct 30, a dust falling port 50 is arranged on the air duct 30, the dust falling port 50 is arranged at the outer edge of the filtering device 10 and is used for collecting dust falling from the filtering device 10, a dust collecting box 60 is connected below the dust falling port 50, the upper part of the dust collecting box 60 is basically in a reverse cone shape, so that the dust is prevented from being accumulated on the upper part of the dust collecting box 60 while all the dust falling ports 50 are covered in the dust collecting box 60; the side of the ash falling port 50 of each filtering device 10 far away from the fan 20 is called a front ash falling port 51, the side of the ash falling port 50 of each filtering device 10 near the fan 20 is called a rear ash falling port 52, and the rear ash falling port 52 is connected with a blind cavity 100 which is arranged in the air conveying pipe 30 and is provided with the filtering device 10, so that smoke is prevented from entering the rear ash falling port 52 from the ash collecting box 60 and then is directly discharged through the fan 20; the back blowing system 40 is used for conveying high-pressure gas into the space 12 formed by the filtering device 10 and the air conveying pipe 30, the high-pressure gas is instantly blown into the space 12 formed by the filtering device 10 and the air conveying pipe 30, so that dust adhered to the outer surface of the filtering device 10 is instantly blown off or shaken off under the impact and oscillation of the high-pressure gas, and the blown off or shaken off dust immediately enters the dust collecting box 60 through the dust falling port 50 on the outer edge of the filtering device 10, and the dust is simply and conveniently cleaned and collected; thus, most of the flue gas entering from the air delivery pipe 30 is filtered by the filter device 10 to obtain clean air meeting the environmental standard, and the clean air passes through the filter cartridge cavity 13 formed by the filter cartridge 11 and the air delivery pipe 30, namely the space 12, is then guided to the gap 31 between the upper part of the filter cartridge 11 and the air delivery pipe 30 by the fan 20 and is discharged through the outlet of the fan 20; the flue gas entering the dust collecting box 60 from the dust falling port 51 at the front side is guided to the blind cavity 100 from the dust falling port 52 at the rear side, the arrangement of the blind cavity 100 enables the flue gas to be filtered only by the filter cartridges 11 at one side or two sides of the blind cavity 100 to obtain clean air, and then the clean air passes through the filter cartridge cavities 13 formed by the filter cartridges 11 and then is guided to the gap 31 between the upper part of the filter cartridges 11 and the air conveying pipe 30 by the fan 20 and is discharged through the outlet of the fan 20.

In a preferred embodiment, the air delivery pipe 30 is connected with the air inlet pipe 70, the outlet of the fan 20 is connected with the air outlet pipe 80, and a plurality of air inlets 71 at different positions in front and back are arranged on the air inlet pipe 70, so that the flue gas can enter the air inlet pipe 70 from a workshop from a plurality of air inlets 71 in a large range; the air outlet pipe 80 is arranged perpendicular to the air conveying pipe 30, a plurality of air outlets 81 with different heights are formed in the air outlet pipe 80, and the lower end 82 of the air outlet pipe is sealed, so that clean air can be discharged only through the air outlets 81 with different heights, and the discharged air can form a plurality of strands of parallel jet flows with consistent advancing directions, so that the movement and air circulation of air in a workshop are accelerated, and more smoke is further promoted to enter the air inlet pipe 70 for filtration; an air volume regulator 83 can be further arranged on the air outlet pipe 80, the air volume regulator 83 can regulate the air outlet volume of the air outlet pipe 80 in real time, so that the flow velocity of the air outlet 81 is regulated, and the condition that the air velocity discharged by the air outlet 81 is too high to cause discomfort of workers or the dust removal efficiency is too low is avoided; particularly, the diameter of the air outlet pipe 80 far from the fan 20 is set to be smaller than that of the end near the fan 20, so that the diameter of clean air discharged from the outlet of the fan 20 is reduced and accelerated when the air outlet pipe 80 advances, and the air outlet 81 at the lower part of the air outlet pipe 80 is prevented from being too small in air outlet amount, so that the air movement and air circulation in a workshop can not be guided.

In a preferred embodiment, the filter devices 10 are at least provided with two front rows or two rear rows, and the arrangement of a plurality of filter devices 10 greatly increases the filtering efficiency and the dust removal effect of the device. Wherein, a front blind plate 111 is arranged between the upper edge of the front side of the front filtering device 110 of the previous row or the previous row of filtering devices and the air conveying pipe 30, the front blind plate 111 and the front side of the front filtering device 110 of the previous row or the previous row of filtering devices are fully paved on the cross section of the air conveying pipe 30, so that the smoke can only be filtered by the front filtering device 110 of the previous row or the previous row of filtering devices and then is led into the space 12 formed by the filtering device 10 and the air conveying pipe 30 by the fan 20; taking two rows of filtering devices 10 as an example, two rows of filtering devices 10 are divided into a front or front row of filtering devices 110 and a rear or rear row of filtering devices 120, wherein an intermediate blind plate 112 is arranged between the upper edge of the rear side of the front or front row of filtering devices 110 and the upper edge of the adjacent filtering device 120, the intermediate blind plate 112 forms an intermediate blind cavity 121 with the front or front row of filtering devices 110 and the rear or rear row of filtering devices 120 due to the existence of the ash falling port 50, and a rear blind plate 113 with a substantially L-shaped or arc-shaped cross section is arranged between the upper edge of the rear side of the rear or rear row of filtering devices 120 and the air duct 30, namely the rear blind cavity 131 is formed between the rear or rear row of filtering devices 130 and the rear blind plate 113. Thus, most of the flue gas entering from the air delivery pipe 30 is filtered by the previous filtering device 110 to obtain clean air meeting the environmental standard, and the clean air passes through the filter cartridge cavity 13 formed by the filter cartridge 11 and the air delivery pipe 30, namely the space 12, is then guided to the gap 31 between the upper part of the filter cartridge 11 and the air delivery pipe 30 by the fan 20 and is discharged through the outlet of the fan 20; the flue gas entering the dust collecting box 60 from the dust falling port 51 at the front side is guided to the middle blind cavity 121 or the rear blind cavity 131 from the dust falling port 52 at the rear side, the arrangement of the middle blind cavity 121 or the rear blind cavity 131 enables the flue gas to be filtered only through the filter cartridges 11 at one side or two sides of the middle blind cavity 121 or the rear blind cavity 131 to obtain clean air, and then the flue gas is guided to the gap 31 between the upper part of the filter cartridges 11 and the air conveying pipe 30 through the filter cartridge cavity 13 formed by the filter cartridges 11 and then is discharged through the outlet of the fan 20.

In a preferred embodiment, a dust probe 61 and/or an observation window 62 are/is arranged on the dust collection box 60 so as to monitor dust in the dust collection box 60 in real time, and prevent the filtering effect of the device from being affected due to excessive dust; an openable and closable dust outlet 63 may be provided at a lower portion of the dust box 60 to discharge dust from the dust box 60. Further, an openable baffle 64 is arranged in the dust collection box 60, the openable baffle 64 can be an electric butterfly valve and can be arranged on the upper portion of the dust probe 61 in an openable and closable manner, when the filtering device 10 filters smoke, the openable baffle 64 is closed to seal the lower portion of the dust collection box 60, and smoke falling on the lower portion of the dust collection box 60 is prevented from being blown up again to carry out secondary filtering; when the blowback system 40 conveys high-pressure gas into the space 12 formed by the filter device 10 and the air delivery pipe 30, the openable baffle 64 is opened, the lower part of the dust collection box 60 is communicated, blown or shaken dust falls into the lower part of the dust collection box 60, and after the blowoff of the filter device 10 is finished, the openable baffle 64 is closed again to seal the lower part of the dust collection box 60.

In a preferred embodiment, the back-blowing system 40 includes a high-pressure air pump, a plurality of back-blowing pipelines 41, electromagnetic valves 42 disposed on the back-blowing pipelines 41, and air blowing nozzles 43 corresponding to the number of the filtering devices 10, the high-pressure air pump is connected to the air blowing nozzles 43 through the back-blowing pipelines 41, and the electromagnetic valves 42 control whether the air blowing nozzles 43 blow air or not by controlling the back-blowing pipelines 41; high-pressure air is output by the high-pressure air pump, the electromagnetic valve 42 is opened, the blowing nozzle 43 blows air, and finally the high-pressure air is sprayed to the inner surface of the filtering device 10 through the blowing nozzle 43, so that dust particles deposited on the filtering device 10 are quickly separated from the outer surface of the filtering device 10 under the impact and oscillation action of the high-pressure air flow and are collected to the dust collection box 60 through the dust falling port 50. Furthermore, the device also comprises a control system, the control system is connected with the fan 20, the electromagnetic valve 42 and the electric butterfly valve, and a wind pressure sensor can be arranged inside and outside the previous filtering device 110 or the previous row of filtering devices, the wind pressure sensor is connected with the control system, and the control system automatically controls the opening and closing of the electromagnetic valve 42. Because the dust is blocked on the outer surface of the filtering device 10, when the blocked dust is continuously deposited on the outer surface of the filtering device 10, the pressure difference between the inside and the outside of the filtering device 10 is continuously increased, when the pressure difference detected by the air pressure sensor reaches a preset value, the control system controls the fan 20 to be closed, the electromagnetic valve 42 is opened, the high-pressure air is instantly sprayed out from the blowing nozzle 43 through the blowback pipeline 41, the dust particles deposited on the filtering device 10 are rapidly separated from the outer surface of the filtering device 10 under the impact and oscillation action of the high-pressure air flow and are collected to the dust collection box 60 through the dust falling port 50, then the air pressure sensor detects that the pressure difference is reduced, the control system controls the electromagnetic valve 42 to be closed, the fan 20 is opened, and the automatic cleaning of the filtering device 10 is achieved.

In another preferred embodiment, a flow guiding plate 90 is additionally installed on the front side of the filtering device 10, the cross section of the flow guiding plate 90 is preferably L-shaped, and a common angle steel can also be used, so that after the flue gas enters the air inlet pipe 70 from a plurality of air inlets 71 in a large range, the flue gas is firstly divided into a plurality of strands by the flow guiding plate 90, and the flue gas forms a vortex on the front side of the filtering device 10, so that the filtering efficiency of the filtering device 10 can be effectively increased, and the flue gas is prevented from being filtered only from the middle area of the front side of the filtering device 10.

Further, a plurality of these weld cigarette dust collector include that a plurality of 200 modularization of welding cigarette dust collector unit, the pertinence hang the setting on workshop upper portion, not only can be fine avoid the waste of ground space and influence the normal work of workshop normal operation and overhead traveling crane, can also the at utmost avoid the wasting of resources, do benefit to the optimal configuration of resource.

In the technical scheme, a plurality of welding smoke dust removal device units 200 are modularly and pertinently mounted on the upper part of a workshop and a space of an overhead traveling crane in a hanging manner, a fan 20 is opened, smoke enters an air inlet pipe 70 from a plurality of air inlets 71 in a large range, the suction force generated by the fan 20 leads most of the smoke to a previous filtering device 110 or a previous row of filtering devices 110 arrayed in an air conveying pipe 30, the smoke is filtered under the action of the previous filtering device 110 or the previous row of filtering devices 110 to obtain clean air, the clean air is led to a gap 31 between the upper part of a filter cartridge 11 and the air conveying pipe 30 by the fan 20 in a space 12 formed by the previous filtering device 110 or the previous row of filtering devices 110 and the air conveying pipe 30 and is accelerated to be discharged to an air outlet pipe 80 by the fan 20, the clean air has a reducing acceleration process when the air outlet pipe 80 advances and is discharged through air outlets 81 at different heights, and the discharged air forms a plurality of parallel jet flows with the consistent advancing direction, the movement and air circulation of air in the workshop are accelerated, more flue gas is further promoted to enter the air inlet pipe 70 for filtration and the dust removal of the flue gas, and the air purification is facilitated; the flue gas entering the dust collection box 60 from the dust falling port 51 at the front side is guided to the middle blind cavity 121 or the rear blind cavity 131 from the dust falling port 52 at the rear side, the arrangement of the middle blind cavity 121 or the rear blind cavity 13 ensures that the flue gas of the dust collection box 60 can be filtered only by the filter cartridges 11 at one side or two sides of the middle blind cavity 121 or the rear blind cavity 131 to obtain clean air, and then the flue gas is guided to the gap 31 between the upper part of the filter cartridges 11 and the air conveying pipe 30 by the fan 20 after passing through the filter cartridge cavity 13 formed by the filter cartridges 11, and is exhausted out through the outlet of the fan 20 in an accelerated manner; before clean air is discharged from the air outlet 81, the air volume regulator 83 adjusts the air volume of the air outlet pipe 80 in real time, and then adjusts the flow rate of the air outlet 81, so that the condition that the flow rate of the air outlet 81 is too high to cause discomfort of workers or the dust removal efficiency is too low is avoided. The blocked dust is continuously deposited on the outer surface of the filtering device 10, the pressure difference between the inside and the outside of the filtering device 10 is continuously increased, when the wind pressure sensor detects that the pressure difference reaches a preset value, the control system controls the fan 20 to be closed, the electromagnetic valve 42 is opened, the openable baffle 64 is opened, the lower part of the dust collecting box 60 is communicated, high-pressure air is instantly sprayed out from the blowing nozzle 43 through the back blowing pipeline 41, dust particles deposited on the filtering device 10 are quickly separated from the outer surface of the filtering device 10 under the impact and oscillation action of the high-pressure air flow, the dust particles are collected to the dust collecting box 60 through the dust falling port 50, the blown or shaken dust falls into the lower part of the dust collecting box 60, then the wind pressure sensor detects that the pressure difference is reduced, the control system controls the electromagnetic valve 42 to be closed, the openable baffle 64 is closed, the lower part of the dust collecting box 60 is closed, the automatic cleaning of the filtering device 10 is achieved, the dust probe 61 or the observation window 62, the dust in the dust collecting box 60 is monitored in real time, the phenomenon that the dust amount is too large and the filtering effect of the device is influenced is avoided, the dust outlet 63 is opened, the dust is released from the dust collecting box 60, and the dust is easy to clean and collect.

The embodiment is only for explaining the conception and the implementation of the utility model, and does not limit the same, and the technical solution without substantial change is still in the protection scope under the conception of the utility model.

Claims (10)

1. A welding fume dust removal device comprises at least one filtering device and a fan, and is characterized by further comprising an air conveying pipe and a back blowing system, wherein the filtering device is arranged in the air conveying pipe, and the fan is arranged behind the filtering device; the dust falling port is arranged on the air conveying pipe, the dust falling port is arranged on the outer edge of the filtering device, and the dust collecting box is connected below the dust falling port, wherein the dust falling port of each filtering device is far away from the side of the fan and is a front dust falling port, the dust falling port of each filtering device is close to the side of the fan and is a rear dust falling port, and the rear dust falling port is connected with a blind cavity in which the filtering device is arranged in the air conveying pipe; the back blowing system is used for conveying high-pressure gas into a space formed by the filtering device and the air conveying pipe; the smoke entering from the air conveying pipe is filtered by the filtering device, then is guided to a gap between the upper part of the filtering device and the air conveying pipe by the fan, and is discharged through an outlet of the fan; the smoke entering the dust collecting box from the dust falling port is guided to the blind cavity by the fan, filtered by the filtering device connected with the blind cavity, guided to the gap between the upper part of the filtering device and the air conveying pipe by the fan and discharged through the outlet of the fan.

2. The welding fume dust collector according to claim 1, wherein said filter means is a filter cartridge.

3. The welding fume dust collector according to claim 1 or 2, wherein said filter unit has at least two rows of front and back, a front blind plate is provided between the front upper edge of the filter unit in the front row or the front row and the air duct, an intermediate blind plate is provided between the rear upper edge of the filter unit in the front row or the front row and the upper edge of the adjacent filter unit, and a rear blind plate having a substantially L-shaped or arc-shaped cross section is provided between the rear upper edge of the filter unit in the rear row or the rear row and the air duct.

4. The welding fume dust collector according to claim 3, wherein said air duct is connected to an air inlet duct, said air inlet duct being provided with an air inlet.

5. The welding fume dust collector according to claim 4, wherein the outlet of said blower is connected to the air outlet pipe.

6. The welding fume dust collector as set forth in claim 5, wherein an air volume regulator is provided on said air outlet pipe.

7. The welding fume dust collector as set forth in claim 5, wherein said air outlet pipe is perpendicular to the air delivery pipe, a plurality of air outlets of different heights are formed in the air outlet pipe, and the lower end of the air outlet pipe is sealed.

8. The welding fume dust collector as set forth in claim 1, wherein the dust collecting box has a reverse conic upper part and a baffle inside the dust collecting box.

9. The welding fume dust collector as claimed in claim 1, wherein the dust collecting box is provided with a dust probe or an observation window, and the dust collecting box is provided with a dust outlet which can be opened and closed.

10. The welding fume dust collector according to claim 1, further comprising a control system, wherein the back-blowing system comprises a high-pressure air pump, a plurality of back-blowing pipelines, electromagnetic valves arranged on the back-blowing pipelines and air blowing nozzles corresponding to the number of the filtering devices, the high-pressure air pump is connected with the air blowing nozzles through the back-blowing pipelines, and the fan and the electromagnetic valves are connected with the control system.

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