CN218487534U - Air pipe assembly, air purification control system, circulating air duct system and welding workshop - Google Patents

Abstract

The utility model belongs to the air purification field discloses an tuber pipe assembly, air purification control system, circulation duct system and welding worker's room, wherein, the tuber pipe assembly includes: the decontamination pipe comprises a decontamination ring pipe, a decontamination main pipe and a plurality of decontamination branch pipes, wherein the decontamination main pipe is connected with an air outlet of the decontamination ring pipe, and the plurality of decontamination branch pipes are connected with a plurality of air inlets which are sequentially arranged at intervals along the circumferential direction on the decontamination ring pipe in a one-to-one correspondence manner; and the air purifying pipe comprises an air purifying ring pipe, an air purifying main pipe connected with an air inlet of the air purifying ring pipe and a plurality of air purifying branch pipes which are connected with the air purifying ring pipe in a one-to-one correspondence manner and are sequentially arranged at intervals along the circumferential direction, and the decontamination ring pipe and the air purifying ring pipe are arranged in an inner ring and outer ring nesting manner. The utility model discloses can realize on a large scale or regional quick air purification to airtight operation space to improve operation ambient air quality, guarantee operation personnel's physical and mental health.

Description

Air pipe assembly, air purification control system, circulating air duct system and welding workshop

Technical Field

The utility model relates to an air purification technical field specifically, relates to an tuber pipe assembly, air purification control system, circulating air duct system and welding worker room.

Background

The existing manual welding workshop is generally provided with a smoke suction pipeline to absorb pollutants such as waste gas, smoke dust and the like generated in the welding operation process and then discharge the pollutants out of the workshop, but the smoke suction effect and the smoke suction range of the existing smoke suction pipeline are still insufficient, so that part of pollutants still stay in the welding workshop for a long time (for example, under the condition that a local area where the pollutants are formed is far away from the smoke suction pipeline), the air in the welding workshop can not be quickly purified, and the physical and mental health of welding workers is adversely affected.

SUMMERY OF THE UTILITY MODEL

At least one defect or not enough to prior art's the aforesaid, the utility model provides a tuber pipe assembly, air purification control system, circulation duct system and welding worker room can realize on a large scale or regional quick air purification to airtight operation space to reach the purpose that improves operation ambient air quality and guarantee operation personnel's physical and mental health.

In order to achieve the above object, the present invention provides in a first aspect an air duct assembly, comprising:

the decontamination pipe comprises a decontamination main pipe, a decontamination ring pipe and a plurality of decontamination branch pipes, wherein the decontamination ring pipe is provided with a decontamination ring pipe air outlet and a plurality of decontamination ring pipe air inlets which are sequentially arranged at intervals along the circumferential direction; and

the air purifying pipe comprises an air purifying main pipe, an air purifying ring pipe and a plurality of air purifying branch pipes, wherein the air purifying ring pipe is provided with an air purifying ring pipe air inlet and a plurality of air purifying ring pipe air outlets which are sequentially arranged at intervals along the circumferential direction, the air purifying main pipe is connected with the air purifying ring pipe air inlet, the air purifying branch pipes are connected with the air purifying ring pipe air outlets in a one-to-one correspondence manner, and the decontamination ring pipe and the air purifying ring pipe are arranged in an inner ring and outer ring nesting manner.

Optionally, the clean air ring pipe is arranged around the outer side of the sewage removing ring pipe, and the plurality of clean air branch pipes are arranged around the outer side of the plurality of sewage removing branch pipes.

Optionally, a plurality of the wind-cleaning branch pipes and a plurality of the dirt removing branch pipes are arranged to extend vertically downwards.

Optionally, the air-purifying duct further comprises an external air duct formed with an air duct inlet end for introducing external air and an air duct outlet end connected with the air-purifying main duct.

The utility model discloses the second aspect provides an air purification control system, air purification control system includes:

in the air pipe assembly, the plurality of clean air branch pipes and the plurality of dirt removing branch pipes are arranged in a one-to-one correspondence manner, and the air outlets of the plurality of clean air branch pipes and the air inlets of the plurality of dirt removing branch pipes can be opened and closed independently;

the smoke region concentration monitors are arranged at the air inlets of the plurality of decontamination branch pipes in a one-to-one correspondence manner, and are configured to monitor the smoke region concentration at the corresponding air inlets of the decontamination branch pipes in real time; and

and the controller is respectively communicated with the plurality of smoke region concentration monitors and is configured to be capable of controlling to open the air outlet of the clean air branch pipe and the air inlet of the decontamination branch pipe which correspond to each other when the smoke region concentration exceeds a preset maximum allowable concentration.

Optionally, the air purification control system further comprises a net wind driven fan disposed in the net wind main pipe and a total smoke concentration monitor disposed in the decontamination main pipe, the total smoke concentration monitor is configured for monitoring the total smoke concentration in the decontamination main pipe in real time, and the controller is further configured to adjust the operation power of the net wind driven fan accordingly according to the total smoke concentration.

The utility model discloses the third aspect provides a circulation air duct system, circulation air duct system includes:

the air pipe assembly; and

a filth filtering device formed with a filtering device inlet and a filtering device outlet;

the air outlet of the decontamination main pipe is communicated with the inlet of the filtering device, and the air inlet of the clean air main pipe is communicated with the outlet of the filtering device.

Optionally, a primary filter layer, an activated carbon filter layer and a negative ion filter layer are arranged in the dirt filtering device in sequence along the airflow direction.

Optionally, the circulating duct system further includes a dirt collection device disposed below the dirt filtering device.

The utility model discloses the fourth aspect provides a welding worker room, welding worker room includes:

welding the workshop body; and

the above-mentioned circulating air duct system;

the air inlets of the decontamination branch pipes and the air outlets of the air purification branch pipes are communicated with the inside of the welding workshop body.

Optionally, the dirt filtering device is installed on an outer wall of the welding workshop body, the clean air main pipe and the decontamination main pipe are both arranged outside the welding workshop body, and the clean air ring pipe, the plurality of clean air branch pipes, the decontamination ring pipe and the plurality of decontamination branch pipes are all arranged inside the welding workshop body.

Optionally, the wall of the welding workshop body is detachably assembled by an aluminum profile frame and a plurality of carbon steel injection molding plates.

Optionally, a window is opened on the wall of the welding workshop body, the window is sealed by an arc light blocking transparent plate, and a sound absorbing layer covers the inner side plate surface of the arc light blocking transparent plate.

Through the technical scheme, when utilizing the utility model discloses an air pipe assembly carries out air purification to airtight operation spaces such as welding worker's room, mainly realize arranging on a large scale of a plurality of scrubbing branch pipes based on the structure of scrubbing ring canal to can carry out quick scrubbing to the different regions in the airtight operation space. After pollutants in different areas in the closed operation space are absorbed in a large range through the plurality of pollution removing branch pipes, the pollutants can be intensively discharged through the main pollution removing pipe. In addition, the clean air can be intensively introduced through the clean air main pipe, the large-range arrangement of the plurality of clean air branch pipes is realized based on the structure of the clean air ring pipe, so that the clean air can be rapidly discharged to different areas in the closed operation space, and the large-range rapid air purification of the closed operation space can be realized. Under the condition that pollutants are mainly concentrated in a certain area or a plurality of areas of the closed operation space, the corresponding decontamination branch pipe and the air purification branch pipe can be adopted for regional air purification, so that the air purification is more targeted. On the other hand, the decontamination ring pipe and the air purification ring pipe are arranged in an inner ring and outer ring nesting mode, so that the occupied space of a pipeline can be saved, and decontamination and clean air supplement can be simultaneously realized in different areas in the closed operation space, thereby effectively improving the air purification effect, improving the air quality of the operation environment and ensuring the physical and mental health of the operation personnel.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a welding workshop according to an embodiment of the present invention;

FIG. 2 is a simplified structural diagram of a circulating duct system according to an embodiment of the present invention;

FIG. 3 is a schematic view of an air duct assembly according to an embodiment of the present invention;

fig. 4 is a partial schematic view of a circulating duct system according to an embodiment of the present invention.

Description of reference numerals:

100. welding workshop 200 workpiece

1. Decontamination main pipe 2 decontamination ring pipe

3. Dirt filtering device with dirt removing branch pipe 4

5. Dirt collecting device 6 air purification main pipe

7. 8 clean wind branch pipes of clean wind ring pipe

9. External air pipe 10 aluminium section bar frame

11. Carbon steel plastic-sprayed plate 12 arc light-blocking transparent plate

13. Automatic 14 positioner of rolling slats door

15. Automatic 16 lifting device of anchor clamps

4a primary filter layer 4b active carbon filter layer

4c anion filter layer

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.

The invention will be described in detail below with reference to the drawings and in connection with exemplary embodiments.

Referring to fig. 3, a first exemplary embodiment of the present invention provides an air duct assembly including a decontamination duct and a clean air duct.

Specifically, the scrubbing pipe is responsible for 1 including the scrubbing, scrubbing ring pipe 2 and a plurality of scrubbing branch pipe 3, and scrubbing ring pipe 2 is formed with scrubbing ring pipe air outlet and follows a plurality of scrubbing ring pipe air intakes of hoop interval arrangement in proper order, and a plurality of scrubbing branch pipes 3 are connected with a plurality of scrubbing ring pipe air intakes one-to-one, and the scrubbing is responsible for 1 and is connected with scrubbing ring pipe air outlet. When the decontamination pipe is used for decontamination, the plurality of decontamination branch pipes 3 can rapidly absorb pollutants (such as waste gas, smoke dust and the like) in the closed operation space in a large range or regionally, and then are intensively discharged to the outside of the closed operation space through the decontamination main pipe 1.

And the clean wind pipe includes that clean wind is responsible for 6, clean wind ring pipe 7 and a plurality of clean wind branch pipe 8, and clean wind ring pipe 7 is formed with clean wind ring pipe air intake and follows the hoop and follow a plurality of clean wind ring pipe air outlets of annular interval arrangement in proper order, and clean wind is responsible for 6 and is connected with clean wind ring pipe air intake, and a plurality of clean wind branch pipes 8 are connected with a plurality of clean wind ring pipe air outlet one-to-one. It can be seen that, in addition to the decontamination by using the decontamination pipe, clean air may be intensively introduced through the main clean air pipe 6 and then discharged into the enclosed work space through the plurality of branch clean air pipes 8 in a wide range or regionally.

In addition, the decontamination ring pipe 2 and the air cleaning ring pipe 7 are arranged in an inner ring and outer ring nesting mode, and the two arrangement modes are specifically included. In the first mode, the decontamination ring pipe 2 and the air cleaning ring pipe 7 are arranged in the form shown in fig. 3, that is, the decontamination ring pipe 2 is used as an inner ring, and the air cleaning ring pipe 7 is used as an outer ring. In the second mode, the decontamination ring pipe 2 is used as an outer ring, and the clean air ring pipe 7 is used as an inner ring.

Through the above arrangement, when air purification is performed on closed operation spaces such as a welding workshop by using the air pipe assembly of the exemplary embodiment, the arrangement of the plurality of decontamination branch pipes 3 on a large scale is mainly realized based on the structure of the decontamination ring pipe 2, so that rapid decontamination can be performed on different areas in the closed operation spaces. After pollutants in different areas in the closed operation space are absorbed in a large range through the plurality of the sewage removal branch pipes 3, the pollutants can be intensively discharged through the sewage removal main pipe 1.

In addition, the clean air can be intensively introduced through the clean air main pipe 6, and the arrangement of the plurality of clean air branch pipes 8 in a large range is realized based on the structure of the clean air circular pipe 7, so that the clean air can be rapidly discharged to different areas in the closed working space, and the large-range rapid air purification of the closed working space can be realized. Under the condition that pollutants are mainly concentrated in a certain area or a plurality of areas of the closed operation space, the corresponding decontamination branch pipe 3 and the air purification branch pipe 8 can be adopted for regional air purification, so that the air purification is more pertinent.

On the other hand, the inner ring and the outer ring of the decontamination ring pipe 2 and the air purification ring pipe 7 are nested, so that the occupied space of pipelines can be saved, and decontamination and clean air supplement can be realized simultaneously in different areas in the closed operation space, thereby effectively improving the air purification effect, improving the air quality of the operation environment and ensuring the physical and mental health of operators.

In one embodiment, a clean air loop 7 is arranged around the outside of the dirt removing loop 2 and a plurality of clean air branch pipes 8 are arranged around the outside of the plurality of dirt removing branch pipes 3, i.e. the pipes are arranged in the manner shown in fig. 3. So set up, behind a plurality of clean wind branch pipes 8 exhaust clean air, partial clean air can flow towards the inboard region of clean wind ring pipe 7, can restrict pollutant such as the regional waste gas of the inboard of clean wind ring pipe 7, smoke and dust to the outdiffusion to make the regional pollutant in this inboard be inhaled a plurality of scrubbing branch pipes 3 sooner, improve air purification speed.

In one embodiment, the plurality of net wind manifolds 8 and the plurality of dirt removing manifolds 3 are each arranged to extend vertically downwards. Because the operators usually work near the ground for the closed working space such as a welding workshop and the like, in order to not affect the normal operation, the air cleaning circular pipe 7 and the decontamination circular pipe 2 are preferably arranged in the top area of the closed working space, and under the condition that the air cleaning branch pipe 8 and the decontamination branch pipe 3 are vertically and downwardly extended, the distance between the air outlet of the air cleaning branch pipe 8 and the air inlet of the decontamination branch pipe 3 and the operators is relatively short, so that the air quality in the active area of the operators can be effectively maintained, and meanwhile, the air cleaning branch pipe 8 and the decontamination branch pipe 3 are positioned above the operators, so that the normal operation cannot be affected. In addition, the walls of the sealed operation spaces such as the welding workshop are vertical walls generally, so that the clean air branch pipes 8 and the dirt removing branch pipes 3 are arranged in a vertically downward extending mode, the visual experience of the neat pipeline arrangement can be formed, the attractiveness is improved, a good operation environment is created, and the possibility that operators generate negative emotions is reduced.

In one embodiment, referring to fig. 4, the clean air duct further includes an external air duct 9, and the external air duct 9 is formed with an air duct inlet end for introducing external air (i.e., outside of the enclosed work space such as the welding workshop) and an air duct outlet end connected to the clean air main duct 6. Under the structure, the clean air introduced by the main air purification pipe 6 can be from the outside of the closed working space, and the introduction of the external fresh air can further maintain the air quality in the closed working space at a high level, thereby more reliably avoiding influencing the health of operators.

In the circulating air duct system described later, the clean air introduced by the main clean air duct 6 may also originate from inside the enclosed working space, in which case the arrangement of the external air duct 9 is not affected, i.e. the clean air introduced by the main clean air duct 6 may originate from both inside the enclosed working space and outside the enclosed working space. This will not be described in detail, and additional description will be provided when referring to the circulating duct system.

The second exemplary embodiment of the present invention also provides an air purification control system, which includes the above-mentioned air duct assembly, a plurality of smoke region concentration monitors and a controller.

Specifically, a plurality of clean air branch pipes 8 of the air pipe assembly and a plurality of decontamination branch pipes 3 are arranged in a one-to-one correspondence manner, and air outlets of the plurality of clean air branch pipes 8 and air inlets of the plurality of decontamination branch pipes 3 are arranged in an opening and closing manner independently of each other. The plurality of smoke region concentration monitors are arranged at the air inlets of the plurality of decontamination branch pipes 3 in a one-to-one correspondence manner, and each smoke region concentration monitor is configured to be used for monitoring the smoke region concentration at the air inlet of the corresponding decontamination branch pipe 3 in real time. The controller is respectively communicated with the smoke region concentration monitors, and is configured to be capable of controlling the opening of the air outlet of the net air branch pipe 8 and the air inlet of the decontamination branch pipe 3 corresponding to each other when the smoke region concentration exceeds the preset maximum allowable concentration.

In other words, when the concentration of the smoke region in one or more local regions in the enclosed working space such as a welding workshop exceeds the preset maximum allowable concentration, the one or more smoke region concentration monitors near the local region can detect and send signals to the controller in real time, and the controller controls one or more groups of the mutually corresponding clean air branch pipes 8 and decontamination branch pipes 3 to be opened according to the signals received from the one or more smoke region concentration monitors near the local region, so that the regional and targeted air purification functions are realized, and the air purification effect and the energy consumption are simultaneously considered.

In one embodiment, the air purification control system further comprises a clean air driven fan arranged in the clean air main pipe 6 and a total smoke concentration monitor arranged in the main decontamination pipe 1, wherein the total smoke concentration monitor is configured for monitoring the total smoke concentration in the main decontamination pipe 1 in real time, and the controller is further configured for adjusting the operation power of the clean air driven fan according to the total smoke concentration.

With the arrangement, the operating power of the clean wind driven fan is in positive correlation with the total smoke concentration in the main decontamination pipe 1. When the total concentration of the smoke in the main decontamination pipe 1 becomes large, the controller increases the operating power of the clean air driving fan, and when the total concentration of the smoke in the main decontamination pipe 1 becomes small, the controller decreases the operating power of the clean air driving fan. The running power of the clean air driving fan is adjusted adaptively, so that the best air purification effect can be obtained with the least energy consumption.

Referring to fig. 2, the third exemplary embodiment of the present invention further provides a circulating air duct system including the air duct assembly and the dirt filtering device 4.

Specifically, the dirt filtering device 4 is formed with a filtering device inlet and a filtering device outlet, the air outlet of the dirt removing main pipe 1 of the air pipe assembly is communicated with the filtering device inlet, and the air inlet of the clean air main pipe 6 is communicated with the filtering device outlet.

Through the above-mentioned setting, welding waste gas in the airtight operation space such as worker's room, pollutants such as smoke and dust can be filtered in importing to filth filter equipment 4 after absorbing through the dirt removing pipe, the clean air that obtains after the filtration can be sent into airtight operation space again through the clean tuber pipe in, thereby realize air purification and cyclic utilization, and need not directly arrange the pollutant outside to airtight operation space, consequently, neither can cause external environment pollution, also can not cause the influence to operation personnel's health, accord with economic environmental protection requirement.

In one embodiment, referring to fig. 4, a primary filter layer 4a, an activated carbon filter layer 4b, and a negative ion filter layer 4c are provided in the dirt-filtering device 4 in this order in the direction of the air flow. After the pollutants enter the pollutant filtering device 4, the pollutants can be firstly filtered by the primary filtering layer 4a to remove large particulate matters, then smoke particles are adsorbed by the activated carbon filtering layer 4b, and finally the pollutants are sterilized by the negative ion filtering layer 4c, dusted and filtered into clean air and output to the clean air pipe.

In one embodiment, the circulating air duct system further includes a dirt collecting device 5 disposed below the dirt filtering device 4, and the dirt collecting device 5 is capable of collecting the contaminants filtered by the dirt filtering device 4 to facilitate centralized cleaning of the contaminants.

In one embodiment, referring to fig. 4, in the case that the clean air duct is provided with the aforementioned external air duct 9, the fresh air introduced from the external air duct 9 can be merged with the filtered clean air in the clean air main duct 6 and discharged into the enclosed working space such as the welding shop through the clean air branch duct 8. External fresh air is supplemented through the external air pipe 9, so that the air quality in the airtight operation space is better, and the health of operation personnel is better guaranteed.

Referring to fig. 1, a fourth exemplary embodiment of the present invention further provides a welding workshop 100, which includes a welding workshop body and the above-mentioned circulating air duct system. Wherein, the air inlets of a plurality of decontamination branch pipes 3 and the air outlets of a plurality of clean air branch pipes 8 are communicated with the inside of the welding workshop body.

When the operating personnel is at this internal welding jobs that carries out of welding worker's room, the waste gas of production, pollutants such as smoke and dust can inhale in the scrubbing ring pipe 2 through scrubbing branch pipe 3, then be responsible for 1 through the scrubbing and concentrate and arrange into filth filter equipment 4 and filter, the clean air rethread clean wind that obtains after the filtration is responsible for 6 flows to clean wind ring pipe 7, then distribute through clean wind ring pipe 7 and arrange into welding worker's room originally after 8 clean wind branch pipes. When the pollutant is at this internal large range dispersion of welding worker room, can make a plurality of scrubbing branch pipes 3 and a plurality of clean wind branch pipes 8 all open, improve air purification speed. When the pollutant is mainly concentrated on a certain or a plurality of local areas in the welding workshop body, the decontamination branch pipe 3 and the clean air branch pipe 8 near the local areas can be opened only to purify the air regionally and pertinently in the local areas, so that the air purification effect can be ensured, too large fan operation power is not needed, and the energy consumption is reduced.

In an embodiment, filth filter equipment 4 installs the outer wall at the welding worker room body, and clean wind is responsible for 6 and the scrubbing is responsible for 1 equipartition and is put at the welding worker room originally externally, and clean wind ring pipe 7, a plurality of clean wind branch pipe 8, scrubbing ring pipe 2 and a plurality of scrubbing branch pipe 3 equipartitions are put at the welding worker room originally internally. Under this structure, only need set up two inlet pipe mouths at the outer wall of welding worker room body and supply clean wind to be responsible for 6 respectively and the scrubbing is responsible for 1 and penetrates, simplify the processing to welding worker room body outer wall, reduce gaseous from being responsible for and advance the risk of the fit-up gap leakage between the mouth.

In one embodiment, the wall of the welding workshop body is detachably assembled by an aluminum profile frame 10 and a plurality of carbon steel injection molding plates 11. And in prior art, the welding workshop body is generally built by adopting reinforced cement and ordinary glass to form, and the wall body is thicker, and the consumptive material is many. Therefore, compared with the prior art, the aluminum profile frame 10 and the carbon steel plastic spraying plate 11 are light in material and convenient to lap, the total weight of the welding workshop body can be reduced, the aluminum profile frame and the carbon steel plastic spraying plate can be recycled for many times, the material cost is saved, and the aluminum profile frame is economical and environment-friendly.

In one embodiment, the window has been seted up to the wall of welding workshop body, and this window seals the setting through arc light-blocking transparent plate 12 (for acrylic for example), and the inboard facial features that arc light-blocking transparent plate 12 has stamped the sound absorbing layer, and this sound absorbing layer can be become by inhaling the sound powder, inhales the sound powder and forms through the special technology suppression, and there is a large amount of small holes that just communicate each other in its inside, and this kind of inside porous structure can effectively weaken the noise propagation to under the circumstances of guaranteeing that the operating personnel have good field of vision, reduce arc light and noise pollution at this internal production of welding workshop.

In one embodiment, the welding workshop 100 includes an automatic roll-up door 13, a positioner 14, an automatic clamp 15, and a lifting device 16. Wherein, the automatic rolling door 13 is arranged in the door of the welding workshop body for opening and closing the door. The positioner 14 and the automatic clamp 15 are installed on the bottom wall of the welding workshop body in a combined mode and used for adjusting the position of the workpiece 200 to be welded, and therefore requirements of different working conditions are met. The hoisting device 16 is suspended above the positioner 14 by a top beam of the welding workshop body so as to move different devices or workpieces 200.

Above has described in detail the optional implementation way of the embodiment of the present invention with reference to the attached drawings, however, the embodiment of the present invention is not limited to the specific details in the above implementation way, and in the technical idea scope of the embodiment of the present invention, it can be to the technical solution of the embodiment of the present invention carry out multiple simple variants, and these simple variants all belong to the protection scope of the embodiment of the present invention.

It should be noted that, in the above embodiments, the various features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the embodiments of the present invention do not need to describe other combinations.

In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.

Claims (13)

1. An air duct assembly, comprising:

the decontamination pipe comprises a decontamination main pipe (1), a decontamination ring pipe (2) and a plurality of decontamination branch pipes (3), wherein the decontamination ring pipe (2) is provided with a decontamination ring pipe air outlet and a plurality of decontamination ring pipe air inlets which are sequentially arranged at intervals along the circumferential direction, the plurality of decontamination branch pipes (3) are connected with the plurality of decontamination ring pipe air inlets in a one-to-one correspondence manner, and the decontamination main pipe (1) is connected with the decontamination ring pipe air outlet; and

clean wind pipe, be responsible for (6), clean wind ring canal (7) and a plurality of clean wind branch pipe (8) including clean wind, clean wind ring canal (7) are formed with clean wind ring canal air intake and follow the hoop a plurality of clean wind ring canal air outlets of interval arrangement in proper order, clean wind be responsible for (6) with clean wind ring canal air intake connection, it is a plurality of clean wind branch pipe (8) are with a plurality of clean wind ring canal air outlet one-to-one is connected, scrubbing ring canal (2) with the nested form of inner and outer loop is arranged in clean wind ring canal (7).

2. Air duct assembly according to claim 1, characterized in that said clean air duct (7) is arranged around the outside of said dirt removal duct (2) and that a plurality of said clean air branch ducts (8) are arranged around the outside of a plurality of said dirt removal branch ducts (3).

3. The air duct assembly according to claim 1, characterized in that a plurality of said clean air branch ducts (8) and a plurality of said dirt removing branch ducts (3) are arranged extending vertically downwards.

4. The air hose assembly according to claim 1, characterized in that the air cleaning hose further comprises an external air hose (9), the external air hose (9) being formed with an air hose inlet end for introducing external air and an air hose outlet end connected with the air cleaning main hose (6).

5. An air purification control system, characterized by comprising:

the air duct assembly according to any one of claims 1 to 4, wherein a plurality of the branch clean air pipes (8) and a plurality of the branch decontamination pipes (3) are arranged in a one-to-one correspondence manner, and air outlets of the branch clean air pipes (8) and air inlets of the branch decontamination pipes (3) can be opened and closed independently of each other;

the smoke region concentration monitors are arranged at the air inlets of the plurality of decontamination branch pipes (3) in a one-to-one correspondence manner and are configured to be used for monitoring the smoke region concentration at the air inlets of the corresponding decontamination branch pipes (3) in real time; and

the controller is respectively communicated with the smoke region concentration monitors and is configured to be capable of controlling the air outlets of the air cleaning branch pipes (8) and the air inlets of the decontamination branch pipes (3) corresponding to each other to be opened when the smoke region concentration exceeds a preset maximum allowable concentration.

6. The air purification control system according to claim 5, further comprising a clean air driven fan disposed within the clean air main (6) and a total smoke concentration monitor disposed within the decontamination main (1), the total smoke concentration monitor being configured for real-time monitoring of the total smoke concentration within the decontamination main (1), the controller being further configured to enable corresponding adjustment of the operating power of the clean air driven fan in accordance with the total smoke concentration.

7. A circulating duct system, comprising:

-a duct assembly according to any one of claims 1 to 4; and

a filth filtering device (4) which is provided with a filtering device inlet and a filtering device outlet;

the air outlet of the decontamination main pipe (1) is communicated with the inlet of the filtering device, and the air inlet of the air purification main pipe (6) is communicated with the outlet of the filtering device.

8. The circulating air duct system according to claim 7, wherein a primary filter layer (4 a), an activated carbon filter layer (4 b) and a negative ion filter layer (4 c) are arranged in the dirt filter (4) in the air flow direction.

9. Circulating air duct system according to claim 7, characterized in that it further comprises a dirt collection device (5) arranged below the dirt filter device (4).

10. A welding workshop, characterized in that the welding workshop (100) comprises:

welding the workshop body; and

a circulating duct system according to any one of claims 7 to 9;

wherein, it is a plurality of the air intake of scrubbing branch pipe (3) and a plurality of the air outlet of net wind branch pipe (8) all communicates the inside of welding worker room body.

11. The welding workshop according to claim 10, wherein the contaminant filtering device (4) is installed on an outer wall of the welding workshop body, the main clean air pipe (6) and the main contaminant removal pipe (1) are all disposed outside the welding workshop body, and the clean air ring pipe (7), the plurality of branch clean air pipes (8), the contaminant removal ring pipe (2) and the plurality of branch contaminant removal pipes (3) are all disposed inside the welding workshop body.

12. The welding workshop of claim 10, characterized in that the walls of the welding workshop body are detachably assembled by means of an aluminium profile frame (10) and a plurality of carbon steel injection-molded plates (11).

13. The welding workshop of claim 10, wherein the walls of the welding workshop body are provided with windows which are closed by arc-blocking transparent plates (12), the inner side surfaces of the arc-blocking transparent plates (12) being covered with sound-absorbing layers.

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