CN112090912A - Modularized air curtain separation downdraft welding smoke dust collecting device - Google Patents

Abstract

The invention discloses a modular air curtain separation downdraft welding fume collection device, comprising a workbench located in a work area, an air curtain dust isolation module and a downdraft exhaust module, wherein the air curtain dust isolation module is arranged in a Right above the work area, the vertical projection coincides with the work area; the downdraft exhaust module is arranged on the ground around the workbench; the air curtain dust isolation module is used to form an air curtain to surround the work area; Type exhaust module is used to collect welding fumes. The adoption of the modular air curtain separation downdraft welding fume collecting device of the present invention can effectively control the fume in the welding workshop to capture the concentrated welding dust, flexibly adapt to the working environment, and facilitate assembly installation.

Description

A modular air curtain separation downdraft welding fume collection device

technical field

The invention belongs to the technical field of air purification in factory workshops, and in particular relates to a modular air curtain separation downdraft welding fume collection device.

Background technique

Welding is an important basic technology in the machining industry, and the toxic and harmful welding fumes generated in the process will pose a health threat to workers who work in this environment for a long time. In the factory workshop, ventilation and purification are often used to control the smoke and dust. Generally, there are two types of ventilation methods: general ventilation and local ventilation. Comprehensive ventilation is divided into natural ventilation and mechanical ventilation. Natural ventilation has low energy consumption, but the direction and speed of outdoor wind are uncertain, the airflow is more random, and the control effect is poor; although mechanical ventilation is controllable, it is used in large workshops and In the multi-span workshop space, it will cause a large amount of power loss, and at the same time, it will be accompanied by serious noise pollution. Local ventilation solves the problem of local welding fume concentration exceeding the standard to a certain extent. Most of the existing technologies choose to use local ventilation.

However, there are still some defects in this design. For example, due to the flexible location of the welding process and the variable size of the welded parts, the setting of the local ventilation device will affect the normal operation of personnel and equipment, and the smoke and dust generated by the moving welding points will be affected. Poor control. Therefore, there is an urgent need for a device that can effectively control welding dust and flexibly adapt to various welding processes.

SUMMARY OF THE INVENTION

Aiming at the above deficiencies, the present invention provides a modular air curtain separation downdraft welding fume collection device, which can solve the two problems of difficulty in effective control of welding dust in fume collection in welding workshops and poor adaptability of dust collection equipment.

In order to solve the above-mentioned technical problems, the embodiment of the present invention adopts the following technical solutions:

A modular air curtain separation downdraft welding fume collection device, comprising a workbench located in a work area, an air curtain dust isolation module and a downdraft exhaust module, wherein the air curtain dust isolation module is arranged just above the work area , the vertical projection coincides with the work area; the downdraft exhaust module is arranged on the ground around the workbench; the air curtain dust-proof module is used to form an air curtain to surround the work area; the downdraft exhaust module Used to collect welding fumes.

Preferably, the workbench, the air curtain dust isolation module and the downdraft exhaust module located in the work area, the air curtain dust isolation module is arranged directly above the work area, and the vertical projection coincides with the work area; The suction type air exhaust module is arranged on the ground around the workbench; the air curtain dust isolation module is used to form an air curtain to surround the work area; the down suction type air exhaust module is used to collect welding fumes.

Preferably, the air curtain dust isolation module further comprises an air curtain air return port, the air curtain air return port is located on the ground of the working area on the same vertical line as the center of the strip-shaped air port, and the air curtain air return port is lower than the ground, An annular groove is formed.

Preferably, the speed of the air flow ejected by the blower during operation is at least 2.5 m/s.

Preferably, when the air curtain dust isolation module is in operation, the airflow velocity at the air curtain air return port is at least 1 m/s.

Preferably, the downdraft exhaust module includes an induced draft fan, an exhaust duct and a welding dust exhaust port, the welding dust exhaust port is arranged on the surface around the workbench, and the lower part of the welding dust exhaust port is connected to the exhaust port. The ducts are communicated, and the induced draft fan is located in the exhaust duct.

Preferably, the downdraft exhaust module further includes a protective net, the protective net is arranged on the surface of the welding dust exhaust port, and the protective net is a detachable structure.

Preferably, when the induced draft fan is working, the airflow velocity at the welding dust exhaust port is at least 1.45 m/s.

Compared with the prior art, the modularized air curtain separation downdraft welding fume collecting device of the present invention can effectively control the welding workshop fume and collect welding dust, adapt flexibly to the working environment, and facilitate assembly installation. A modular air curtain separation downdraft welding fume collection device of this embodiment includes a workbench located in a work area, an air curtain dust isolation module and a downdraft exhaust module, and the air curtain dust isolation module is arranged in a Right above the work area, the vertical projection coincides with the work area; the downdraft exhaust module is arranged on the ground around the workbench; the air curtain dust isolation module is used to form an air curtain to surround the work area; Type exhaust module is used to collect welding fumes. Through the effective combination of the air curtain dust isolation module and the downdraft ventilation module, the optimized blowing and suction air curtain is adopted, and it is reasonably configured with the downdraft welding dust exhaust device, which not only effectively wraps the welding dust in the working area, It prevents the welding dust from escaping, and can effectively remove the fume pollution in the working area, effectively ensuring the air quality in the working area. Solve the problem that the welding workshop is open on all sides and the local ventilation is difficult to control effectively.

Description of drawings

1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the front plan structure of an embodiment of the present invention;

Fig. 3 is the plane structure schematic diagram of the air curtain air outlet arrangement in the embodiment of the present invention;

FIG. 4 is a schematic plan view of the layout of the downdraft type air outlet in the embodiment of the present invention;

FIG. 5 is a schematic diagram of the layout of a downdraft exhaust duct in an embodiment of the present invention.

In the picture: ceiling 1, blower 2, static pressure box 3, strip air outlet 4, workbench 5, air curtain return air outlet 6, welding dust exhaust outlet 7, protective net 8, induced draft fan 9 and exhaust duct 10 .

Detailed ways

The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

As shown in FIG. 1 , a modular air curtain separation downdraft welding fume collection device according to an embodiment of the present invention includes a workbench 5 located in the work area, an air curtain dust isolation module and a downdraft exhaust module. The air curtain dust isolation module is arranged directly above the working area, and the vertical projection coincides with the working area; the downdraft exhaust module is arranged on the ground around the workbench 5; the air curtain dust isolation module is used to form an air curtain to The working area is surrounded; the downdraft exhaust module is used to collect welding fumes.

Among them, the air curtain dust isolation module isolates each station from the large environment by forming an air curtain, maintaining the independence of the environment and control of each station, which is beneficial to reduce the purification load of non-important areas and reduce the overall The number of welding dust collection equipment reduces the initial investment cost; at the same time, it is beneficial to unit management, which is suitable for changeable production shifts and production conditions. Each device can be freely adjusted according to the size of the station, which can meet different production needs. A modular assembled collection device is formed, which can be flexibly adapted to the working environment. This will not cause energy waste and reduce later operation and maintenance costs. Divide a station into a work area, the control area is small, and the air supply speed can be set lower, avoiding the noise caused by the high air supply speed in the traditional workshop.

In a modular air curtain separation downdraft welding fume collection device of the above embodiment, preferably, the air curtain dust isolation module includes a ceiling ceiling 1, a blower 2, a static pressure box 3 and a bar-shaped air outlet 4; The box 3 is arranged at the lower part of the ceiling plate 1, and the static pressure box 3 is arranged along the edge of the working area; the blower 2 is arranged at the upper part of the ceiling plate 1; . The air curtain dust isolation module is wrapped around the workbench 5 by generating an air curtain. The ceiling 1, the air curtain and the ground form a relatively closed space, which separates the workbench 5 from the large-space workshop and maintains each station. The independence of environment and control, while reducing the purification load of non-critical areas, improves the efficiency of welding dust collection.

Preferably, the air curtain dust isolation module further includes an air curtain air return port 6, and the air curtain air return port 6 is located on the ground of the work area on the same vertical line as the center of the strip air port 4. The air curtain air return port 6 Below the ground, an annular groove is formed. The strip-shaped air outlet 4 ejects air flow, and the air curtain return air outlet 6 discharges air flow. Under the combined action of the two, an air flow air curtain with four sides perpendicular to the ground wraps the workbench 5 to prevent the welding dust from escaping. The air curtain air return port 6 is slightly lower than the ground, and the attenuated air curtain can be recovered in time to prevent the airflow at the lower end of the air curtain from diffusing into the target area, causing interference to the flow field in the working area, and ensuring the working efficiency of the overall device.

Preferably, the speed of the air flow ejected by the blower 2 during operation is at least 2.5 m/s. At the same time, when the air curtain dust isolation module is working, the airflow velocity at the air curtain air return port 6 is at least 1 m/s. According to the velocity attenuation formula of the plane jet axis, the air flow can be sealed at this speed, which further enhances the welding dust separation effect of the whole device, and controls the welding dust within the designated area.

Preferably, the downdraft exhaust module includes an induced draft fan 9, an exhaust duct 10 and a welding dust exhaust port 7. The welding dust exhaust port 7 is arranged on the surface around the workbench 5, and the welding dust exhaust port 7 The lower part of the port 7 is communicated with the exhaust duct 10 , and the induced draft fan 9 is located in the exhaust duct 10 . Through the negative pressure effect of the induced draft fan 9, the welding dust is discharged into the underground exhaust pipe 10, and then collected into the main pipe for centralized discharge treatment. Since the density of welding dust is greater than that of air, the welding dust will be deposited to the ground by gravity after being sprayed during the welding process, and will be collected near the ground, reducing the residence time of pollutants. According to the characteristic that the density of welding dust is larger than that of air, the movement characteristics of its sedimentation are fully utilized, and the welding dust is effectively discharged by means of downward suction.

Preferably, the downdraft exhaust module further includes a protective net 8, the protective net 8 is arranged on the surface of the welding dust exhaust port 7, and the protective net 8 is a detachable structure. Prevent items from falling, and at the same time facilitate the cleaning and maintenance of the exhaust system. The protective net 8 is flush with the ground and does not affect the daily operations of personnel and equipment.

Preferably, when the induced draft fan 9 is working, the airflow velocity at the welding dust exhaust port 7 is at least 1.45 m/s. At this speed, a ventilation of the air curtain separation area can be completed within 30s, and the welding fumes can be discharged in time, so that the concentration of welding fumes in the workshop is always lower than 4mg/m ³ , reaching the "Occupational Exposure Limits of Harmful Factors in Industrial Places - Chemical Factors" requirements specified in.

The working process of the modular air curtain separation downdraft welding fume collection device of the above embodiment is: when the welding work is required, the air curtain dust isolation device and the downdraft exhaust device are activated. On the one hand, the blower 2 rotates, and the fresh air is pressurized by the blower 2 and sent into the static pressure box 3, and then ejects a surface airflow with a certain strength downward through the bar-shaped tuyere 4; The continuous airflow air curtain effectively wraps the welding dust in the working area, divides the worktable 5 into a closed space, prevents the welding dust from escaping, and also reduces the disturbance of external airflow. The downward suction welding dust module works at the same time. Under the action of the induced draft fan 9, a large amount of welding dust generated by welding is continuously inhaled and discharged in time through the downward suction method, which effectively removes the welding dust pollution in the working area and increases the welding dust concentration in the working area. Control below the standard 4mg/m ³ and maintain a good working environment.

Compared with the prior art, by adopting the modular air curtain separation downdraft welding fume collection device of the present invention, by forming the air curtain, a closed space is formed in the working area, the interference of the transverse airflow in the workshop is reduced, and the Greatly improve the collection efficiency of welding dust. The downdraft exhaust is used to quickly settle the pollutants, collect them in a concentrated manner near the ground, and discharge them in a timely and effective manner to improve the air quality in the entire area. At the same time, the modularized air curtain divides the tall workshop into small spaces based on workstations. On the one hand, it reduces the scope of welding dust pollution and reduces unnecessary pollution diffusion; on the other hand, it also facilitates the unit management of workstations. It is easy to install and can be adjusted according to the actual production conditions of the station, flexibly adapt to the working environment, and is easy to install.

The specific implementation cases described in the present invention are only preferred implementation cases of the present invention, and are not intended to limit the implementation scope of the present invention. That is, all equivalent changes and modifications made according to the content of the patented scope of the present invention shall be regarded as the technical scope of the present invention.

Claims (8)

1. A modularized air curtain separation downdraft welding smoke dust collecting device is characterized by comprising a workbench (5) positioned in a working area, an air curtain dust separation module and a downdraft exhaust module, wherein the air curtain dust separation module is arranged right above the working area, and the vertical projection of the air curtain dust separation module is superposed with the working area; the downdraft exhaust module is arranged on the ground around the workbench (5); the air curtain dust separation module is used for forming an air curtain to surround the working area; the downdraft exhaust module is used for collecting welding smoke dust.

2. The modular air curtain split downdraft welding fume collection device according to claim 1, wherein said air curtain dust barrier module comprises a drop ceiling panel (1), a blower (2), a plenum box (3) and a strip tuyere (4); the static pressure box (3) is arranged at the lower part of the suspended ceiling top plate (1), and the static pressure box (3) is arranged along the edge of a working area in a contrast manner; the air feeder (2) is arranged on the upper part of the suspended ceiling plate (1); the strip-shaped air ports (4) are circumferentially arranged at the lower part of the static pressure box (3) and are arranged in the middle.

3. The modular air curtain partition downdraft welding fume collecting device according to claim 2, wherein said air curtain dust-proof module further comprises an air curtain air return opening (6), said air curtain air return opening (6) is located on the ground of the working area on the same vertical line with the center of the strip-shaped air opening (4), said air curtain air return opening (6) is lower than the ground to form an annular groove.

4. The modular air curtain split downdraft welding fume collecting device according to claim 3, wherein said blower (2) is operated to emit an air flow having a velocity of at least 2.5 m/s.

5. The modular curtain-divided downdraft welding fume collecting device according to claim 4, wherein said curtain dust barrier module is operative with an air flow velocity at the curtain return air inlet (6) of at least 1 m/s.

6. The modular air curtain separation downdraft welding fume collecting device according to claim 1, wherein the downdraft exhaust module comprises an induced draft fan (9), an exhaust duct (10) and a welding fume exhaust port (7), the welding fume exhaust port (7) is arranged on the surface of the periphery of the workbench (5), the lower portion of the welding fume exhaust port (7) is communicated with the exhaust duct (10), and the induced draft fan (9) is located in the exhaust duct (10).

7. The modular air curtain separation downdraft welding fume collecting device according to claim 6, wherein the downdraft exhaust module further comprises a protective net (8), the protective net (8) is arranged on the surface of the welding fume exhaust opening (7), and the protective net (8) is of a detachable structure.

8. The modular air curtain partition downdraft welding fume collecting device according to claim 1, wherein an air velocity at the welding fume exhaust outlet (7) is at least 1.45m/s when the induced draft fan is operated.

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