Welding fume treatment system

Abstract

The invention provides a welding fume treatment system which comprises a control system and a negative pressure device, a dust collection pipeline is communicated with the inlet end of the negative pressure device, the outlet end of the negative pressure device is communicated with a fume exhaust pipe, and a filtering device is arranged between the inlet of the dust collection pipeline and the negative pressure device; the dust collection pipeline is provided with an air volume control valve, the negative pressure device and the filtering device are both connected with the control system, and the control system comprises a negative pressure adjusting module and a sensor module used for monitoring the dust concentration in a welding area in real time. When the smoke dust concentration changes, the control system can automatically adjust the opening degree of the air volume control valve according to data fed back by the sensor module and can dynamically adjust the power of the negative pressure device according to the actual dust concentration, dynamic adjustment of the dust removal air volume is achieved, and it is guaranteed that the optimal smoke dust capturing efficiency can be maintained under different working conditions; the frequency conversion control mode can effectively reduce the energy consumption, and ensures the efficient operation of the system at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of welding fume control, and in particular to a welding fume control system. Background Art

[0002] Welding is an indispensable part of the manufacturing industry and is widely used in industries such as automobile manufacturing, aerospace, and shipbuilding. However, a large amount of smoke and harmful gases are generated during the welding process. Therefore, the development of an effective welding fume control system is crucial to protecting workers' health and improving production safety.

[0003] At present, welding fume control systems on the market mainly use mechanical filtration, electrostatic dust removal and other technologies to remove fume. However, these systems generally have the problem of high energy consumption. Due to the lack of intelligent control function, the system often runs at a fixed wind speed, resulting in energy waste. In addition, in the face of different welding conditions (such as changes in fume concentration), traditional fume control systems are often difficult to quickly adjust their working state, thus affecting the dust removal efficiency. Summary of the invention

[0004] The object of the present invention is to provide a welding fume control system, which can automatically adjust the air volume according to the concentration of welding fume to improve the dust removal efficiency.

[0005] The present invention provides a welding fume treatment system, comprising a control system and a negative pressure device, wherein the inlet end of the negative pressure device is connected to a dust suction pipe, the outlet end of the negative pressure device is connected to a smoke exhaust pipe, and a filter device is provided between the inlet of the dust suction pipe and the negative pressure device; an air volume control valve is provided on the dust suction pipe, and the negative pressure device, the filter device and the air volume control valve are all connected to the control system;

[0006] The control system includes a sensor module and a negative pressure regulating module. The sensor module is arranged at the inlet end of the dust suction duct and is used to monitor the dust concentration in the welding area in real time; the negative pressure regulating module automatically adjusts the negative pressure level of the negative pressure device according to the data detected by the sensor module.

[0007] Furthermore, an air collecting hood is installed at the inlet end of the dust suction duct.

[0008] Furthermore, a spark arrester is installed at the inlet end of the dust collection pipe, an ash collecting cylinder is arranged below the spark arrester, and the spark arrester is connected to the ash collecting cylinder through a pipe.

[0009] Furthermore, the filtering device is a cartridge dust collector.

[0010] Furthermore, a muffler and a lightning rod are provided at the top of the smoke exhaust pipe.

[0011] Furthermore, a detection port is provided on the side of the smoke exhaust pipe, a detection platform is provided on the outer side of the smoke exhaust pipe below the detection port, and a Z-shaped ladder is provided at the bottom of the detection platform.

[0012] Furthermore, the negative pressure device includes a frame and a variable frequency fan, a sound insulation box is installed on the frame, the variable frequency fan is installed in the sound insulation box, and a shock-absorbing pad is provided at the bottom end of the frame.

[0013] Furthermore, sound insulation cotton is bonded to the inner wall of the sound insulation box, and the thickness of the sound insulation cotton is not less than 80 mm.

[0014] Furthermore, flexible connections are used between the inlet and outlet of the variable frequency fan and the dust collection duct.

[0015] Furthermore, the dust collection duct includes a main pipe and three branch pipes, one end of the main pipe is connected to the filtering device, and the other end of the main pipe is connected to the three branch pipes respectively through a T-shaped tee, and the air collecting hood is installed on each of the branch pipes.

[0016] The beneficial effect of the technical solution is that: in the present invention, welding smoke enters the filter device through the dust suction pipe, and the particles in the smoke are removed by the filter device. Since the pressure sensor module is provided at the inlet end of the dust suction pipe, when the smoke concentration changes, the control system will automatically adjust the opening of the air volume control valve according to the data fed back by the sensor module, and can dynamically adjust the power of the negative pressure device according to the actual dust concentration, so as to realize the dynamic adjustment of the dust removal air volume, and ensure that the best smoke capture efficiency can be maintained under different working conditions. This variable frequency control method can effectively reduce energy consumption and ensure the efficient operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a top view of the overall structural arrangement of the present invention.

[0019] Figure 2 It is a side view of the overall structural arrangement of the present invention.

[0020] Figure 3 Another side view of the overall structural arrangement of the present invention.

[0021] Explanation of the reference numerals: 1 - dust suction duct, 2 - branch pipe, 3 - air collecting hood, 4 - filtering device, 5 - negative pressure device, 6 - smoke exhaust pipe, 7 - spark arrester, 8 - ash collecting cylinder, 9 - muffler, 10 - Z-shaped ladder. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1

[0026] like Figure 1-Figure 3As shown, the present invention provides a welding fume control system, including a control system and a negative pressure device 5, the negative pressure device 5 is used to generate negative pressure in the welding area to absorb the fume generated by welding, the dust suction pipe 1 is connected to the inlet end of the negative pressure device 5, and the outlet end of the negative pressure device 5 is connected to the exhaust pipe 6. The dust suction pipe 1 includes a main pipe and three branch pipes 2, each branch pipe 2 corresponds to the gouging area, the automatic welding area and the manual welding area, the main pipe is connected to the three branch pipes 2 through a T-shaped tee, and each branch pipe 2 is installed with a gas collecting hood 3, which can effectively collect all welding fumes and odors without obvious overflow or drifting.

[0027] The negative pressure device 5 includes a frame and a variable frequency fan. The variable frequency fan can automatically adjust the wind speed according to the amount of dust generated during the welding process. A soundproof box is installed on the frame, and the variable frequency fan is installed in the soundproof box. A shock-absorbing pad is provided at the bottom of the frame. Soundproof cotton is bonded to the inner wall of the soundproof box. The thickness of the soundproof cotton is not less than 80 mm to ensure the sound insulation effect. Canvas is used to realize soft connection between the inlet and outlet of the variable frequency fan and the dust collection pipe 1 to prevent resonance between the variable frequency motor and the dust collection pipe 1.

[0028] An air volume control valve is provided at the inlet end of each branch pipe 2 on the dust collection pipe 1. A filter device 4 is provided between the inlet of the dust collection pipe 1 and the negative pressure device 5. In this embodiment, the filter device 4 is a cartridge dust collector. The negative pressure device 5, the filter device 4 and the air volume control valve are all connected to the control system. The control system includes a sensor module and a negative pressure adjustment module. The sensor module is provided at the inlet end of the dust collection pipe 1. When the smoke concentration changes, the control system will automatically adjust the opening of the air volume control valve according to the data fed back by the sensor module, and can dynamically adjust the power of the negative pressure device according to the actual dust concentration, so as to realize the dynamic adjustment of the dust removal air volume, and ensure that the best smoke capture efficiency can be maintained under different working conditions. This variable frequency control method can effectively reduce energy consumption and ensure the efficient operation of the system.

[0029] On the other hand, through the regulating effect of the air volume control valve, the airflow entering the filter device can be made more uniform and stable, reducing the impact on the filter device and helping to extend the service life of the filter device.

[0030] A spark arrester 8 is installed at the inlet end of the dust collection pipe 1 for catching unburned sparks in the flue gas. An ash collecting cylinder is arranged below the spark arrester. The spark arrester is connected to the ash collecting cylinder through a pipeline to collect dust.

[0031] A muffler 9 and a lightning rod are provided at the top of the exhaust pipe 6. The muffler 9 is used to reduce airflow noise. A detection port for detecting smoke indicators is provided on the side of the exhaust pipe 6. A detection platform is provided below the detection port on the outside of the exhaust pipe 6. A Z-shaped ladder 10 is provided at the bottom of the detection platform.

[0032] Example 2

[0033] The difference between this embodiment and embodiment 1 is that the filter device 4 includes at least two layers of different types of filter media to achieve a multi-stage filtering effect. The first layer of filter media of the filter device 4 is a pre-filter for removing larger particles of dust; the second layer of filter media is a high-efficiency particulate air filter (HEPA) for filtering particles smaller than 0.3 microns. This double-layer filtering structure can effectively reduce subsequent maintenance costs and improve filtering efficiency.

[0034] Example 3

[0035] The difference between this embodiment and the above-mentioned embodiment is that it also includes an electrostatic dust removal device, which is installed after the filtering device 4 to further improve the dust capture efficiency; the electrostatic dust removal device is electrically connected to the control system so as to automatically start or shut down according to the data provided by the sensor module to adapt to different dust types and concentrations and achieve higher purification efficiency.

[0036] The electrostatic precipitator comprises two sets of parallel arranged electrode plates, one set of which carries positive charge and the other set of which carries negative charge. The charged dust particles are adsorbed by electric field force. This structure can significantly improve the capture rate of small dust particles while reducing the pressure loss of the filter device 4.

[0037] Example 4

[0038] The difference between this embodiment and the above embodiment is that the branch pipe 2 and the main pipe are connected by a bellows, a bracket that can slide in the height direction is installed on the wall of each workroom, and the branch pipe 2 and the gas collecting hood 3 are installed on the bracket, so that the bracket can drive the branch pipe 2 to rise and fall. The mechanism that drives the bracket to slide up and down can be a linear guide or a screw slider mechanism driven by a motor.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding fume control system, It is characterized in that It comprises a control system and a negative pressure device, wherein the inlet end of the negative pressure device is connected to a dust suction pipe, the outlet end of the negative pressure device is connected to a smoke exhaust pipe, and a filter device is provided between the inlet of the dust suction pipe and the negative pressure device; an air volume control valve is provided on the dust suction pipe, and the negative pressure device, the filter device and the air volume control valve are all connected to the control system; The control system includes a sensor module and a negative pressure regulating module. The sensor module is arranged at the inlet end of the dust suction duct and is used to monitor the dust concentration in the welding area in real time; the negative pressure regulating module automatically adjusts the negative pressure level of the negative pressure device according to the data detected by the sensor module.

2. The welding fume control system according to claim 1, It is characterized in that An air collecting hood is installed at the inlet end of the dust collection pipeline.

3. The welding fume control system according to claim 1, It is characterized in that A spark arrester is installed at the inlet end of the dust collection pipe, an ash collecting cylinder is arranged below the spark arrester, and the spark arrester is connected with the ash collecting cylinder through a pipeline.

4. The welding fume control system according to claim 1, It is characterized in that The filtering device is a cartridge dust collector.

5. The welding fume control system according to claim 1, It is characterized in that A muffler and a lightning rod are arranged on the top of the smoke exhaust pipe.

6. The welding fume control system according to claim 1, It is characterized in that A detection port is provided on the side of the smoke exhaust pipe, a detection platform is provided on the outer side of the smoke exhaust pipe below the detection port, and a Z-shaped ladder is provided at the bottom of the detection platform.

7. The welding fume control system according to claim 1, It is characterized in that The negative pressure device comprises a frame and a variable frequency fan. A soundproof box is installed on the frame, and the variable frequency fan is installed in the soundproof box. A shock-absorbing pad is provided at the bottom end of the frame.

8. The welding fume control system according to claim 7, It is characterized in that Sound insulation cotton is bonded to the inner wall of the sound insulation box, and the thickness of the sound insulation cotton is not less than 80 mm.

9. The welding fume control system according to claim 7, It is characterized in that The inlet and outlet of the variable frequency fan and the dust collection duct are both softly connected.

10. The welding fume control system according to claim 2, It is characterized in that The dust collection duct includes a main pipe and three branch pipes. One end of the main pipe is connected to the filtering device, and the other end of the main pipe is connected to the three branch pipes respectively through a T-shaped tee. The air collecting hood is installed on each branch pipe.

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