Welding fume purification equipment to prevent solid particle accumulation

Abstract

The present invention relates to the technical field of environmental protection equipment, specifically to a welding fume purification device for preventing the accumulation of solid particles, including an equipment housing, a welding mechanism, a welding fume purification mechanism, a welding chamber in the equipment housing, a first fume purification chamber connected to the welding chamber, a second fume purification chamber connected to the first fume purification chamber, and an equipment assembly chamber connected to the second fume purification chamber; the welding fume purification mechanism includes a first particle filter assembly for filtering large-size solid particles, a second particle filter assembly for filtering small-size solid particles, and an activated carbon filter element for adsorbing heavy metals in flue gas. The fume purification mechanism of the present invention adopts a top-in-bottom-out method, which is conducive to the collection of solid particles, and at the same time improves the interception mechanism of solid particles, effectively preventing the accumulation of particles in welding fume.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection equipment, and in particular to welding fume purification equipment for preventing accumulation of solid particles. Background Art

[0002] During the welding process of stainless steel workpieces, welding slag and smoke are generated at the welding point. Most of the welding smoke contains toxic compounds. If it is not treated, it will not only endanger the health of the operators at all times, but also damage the natural environment after being directly discharged into the air.

[0003] The welding fume purification method in the prior art usually includes three stages. The first stage is to intercept large solid particles in the fume. The commonly used method is to rely on the gravity difference between large particles and flue gas to automatically reduce dust, also known as physical dust collection. The second stage is to intercept small solid particles in the flue gas. The component used is a filter element to intercept small particles on the outside of the filter paper. The third stage is to adsorb harmful gases. The adsorption material used is activated carbon. The fume purification equipment on the market generally adopts a structural design of fume inlet from the bottom and outlet from the top. In actual use, there are the following technical problems:

[0004] 1. Since large particles rely only on their own weight to fall off, and collide with the incoming flue gas, some particles will still go up to the filter element with the flue gas, resulting in a high frequency of filter element replacement;

[0005] 2. The main filtering components of the filter element are composed of a perforated end cap, a sealed end cap and a filter disc located between the two end caps. The filter disc is a cylindrical structure. Due to the effect of negative pressure, the flue gas first passes through the lower part of the filter disc, resulting in the blockage area of ​​the lower part of the filter disc being much larger than the blockage area of ​​the upper part, which not only affects the filtration efficiency, but also causes irreversible damage to the internal components of the negative pressure pump. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a welding fume purification device for preventing the accumulation of solid particulate matter. The fume adopts a top-in-bottom-out method, which is conducive to the collection of solid particulate matter. At the same time, the interception mechanism of solid particulate matter is improved to effectively prevent the accumulation of particulate matter in the welding fume.

[0007] To achieve the above-mentioned object, the present invention provides a welding fume purification device for preventing the accumulation of solid particles, comprising a device housing, a welding mechanism and a welding fume purification mechanism arranged in the device housing;

[0008] A welding chamber is arranged on the front side of the upper part of the equipment housing, a first fume purification chamber connected to the welding chamber is arranged on the rear side of the upper part of the equipment housing, a second fume purification chamber and an equipment assembly chamber are arranged on the lower part of the equipment housing, and the second fume purification chamber is connected to the first fume purification chamber; a negative pressure generating device is arranged in the equipment assembly chamber, an air inlet of the negative pressure generating device is connected to the second fume purification chamber, and an exhaust port is arranged on the equipment housing;

[0009] The welding fume purification mechanism comprises a first particle filter assembly for filtering large-size solid particles, a second particle filter assembly for filtering small-size solid particles, and an activated carbon filter element for adsorbing heavy metals in the fume; the first particle filter assembly is located in the first fume purification chamber, and comprises a first baffle, a second baffle and a vibrating component, the first baffle and the second baffle are alternately arranged in a plurality, the first baffle is located outside the welding chamber, the second baffle is located on the opposite side of the first baffle, the first baffle and the second baffle are arranged obliquely downward in a direction from front to back, the rear end of the first baffle is located behind the front end of the second baffle, and the rear end of the first baffle is located above the front end of the second baffle, a baffle bar is arranged on the upper surface of the second baffle, the rear side of the baffle bar is a plane structure, the upper surface and the front side of the baffle bar are an integrated arc surface structure, and a dust outlet is arranged at a position close to the second baffle on the back plate of the equipment housing located at the rear side; the second particle filter assembly and the active sleeve filter element are both located in the second fume purification chamber, and the second particle filter assembly is located at the rear side of the active sleeve filter element.

[0010] Furthermore, the vibration component is a vibration motor, and the vibration motor is installed on the lower surface of the second baffle.

[0011] Furthermore, the vibration component includes a driving motor and a vibrator. The driving motor is assembled and connected to the inner side of the device housing. A cam is set on the output shaft of the driving motor. The vibrator is assembled on the lower surface of the second baffle through a rotating shaft. The vibrator includes a connecting arm and a hammer head. A strip hole is set on the connecting arm. A driving rod is movably connected in the strip hole. The end of the driving rod is fixedly connected to the edge of the cam. When the cam drives the driving rod to rotate circumferentially, the driving rod slides and rolls in the strip hole, and the hammer head swings backward to contact the lower surface of the second baffle, and swings forward to contact the lower surface of the first baffle below the second baffle.

[0012] Furthermore, the vibration component includes a driving motor and a vibrator, the driving motor is assembled and connected to the inside or outside of the device housing, the vibrator includes a connecting arm and a hammer head, the connecting arm is assembled and connected to the output shaft of the driving motor, and the vibrator moves in an arc within its rotation radius driven by the output shaft of the driving motor, and the second baffle and the first baffle are both located within the rotation radius of the vibrator.

[0013] Furthermore, the welding chamber is slidably provided with a sliding seat, an electric push rod is provided in the welding chamber, the piston rod of the electric push rod is assembled and connected to the sliding seat, the lower surface of the sliding seat is fixedly connected with a driving rack, and short shafts are rotatably connected on both sides of the equipment casing. One end of the short shaft located in the equipment casing is coaxially fixed with a driving gear meshing with the driving rack, and the other end of the short shaft located outside the equipment casing is coaxially fixed with a driving pulley.

[0014] Furthermore, a long shaft is rotatably connected to the upper front side of the equipment housing, and a driven pulley and a first gear are coaxially fixed on the end of the long shaft. The driven pulley and the driving pulley are connected by a belt drive. The upper front side of the equipment housing is hinged with an equipment door through a door shaft, and a second gear meshing with the first gear is arranged on the door shaft.

[0015] Furthermore, a high temperature resistant glass window is provided in the equipment door.

[0016] Furthermore, the welding mechanism is located in the welding chamber, and includes a first linear drive module arranged horizontally, a horizontal slide, a second linear drive module arranged vertically, a vertical slide and a welding gun. The horizontal slide moves horizontally in the welding chamber driven by the first linear drive module, the second linear drive module is assembled on one side of the horizontal slide, the vertical slide moves vertically in the welding chamber driven by the second linear drive module, and the welding gun is assembled on the vertical slide.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The welding fume purification equipment disclosed in the present invention is provided with a first fume purification chamber at the rear of a welding chamber, and a second fume purification chamber and an equipment assembly chamber are provided below the welding chamber and the first fume purification chamber. Under the action of a negative pressure generating device in the equipment assembly chamber, the fume generated by the welding of the workpiece flows in and out from the top to the bottom in sequence through the first fume purification chamber, the second fume purification chamber and the equipment assembly chamber. The first particle filter component in the first fume purification chamber can filter large-size solid particles, and the second particle filter component and the activated carbon filter element in the second fume chamber can filter small-size solid particles and heavy metals in the fume, respectively, thereby realizing step-by-step filtration of the fume.

[0019] Since the falling direction of the particles in the present invention is the same as the gas flow direction, while accelerating the falling speed of the particles, it can also prevent the problem of frequent clogging of the filter element in the prior art due to the opposite direction of the air flow direction and the falling direction of the particles. In particular, the first particle filter assembly in the present invention adopts an alternately arranged first baffle and a second baffle, and the rear end of the first baffle is located behind the front end of the second baffle, so as to form an S-shaped airflow channel in the first smoke purification chamber, which can not only extend the flow path of the smoke, but also facilitate the interception of large particles. The first baffle and the second baffle are arranged in an inclined manner, which is convenient for the particles to slide down quickly and concentrate on the second baffle. The baffle bar located on the upper surface of the second baffle has a special structural design, and its front side adopts an arc design to facilitate the sliding of solid particles. The rear side forms a leeward surface to prevent the particles from being carried by the smoke, thereby ensuring the interception effect of large particles.

[0020] 2. The welding fume purification device disclosed in the present invention, the first filter assembly also includes a vibrating component, and the vibrating components in the present invention are preferably three types:

[0021] One is to use a vibration motor, which is installed on the lower surface of the second baffle. When the negative pressure generating device is shut down, the vibration motor can be turned on to vibrate the solid particles on the second baffle so that they slide toward the dust outlet. It should be pointed out that when the negative pressure generating device is in working state, the dust outlet is blocked by the blocking plate;

[0022] The second is to use a combination of a driving motor and a vibrating hammer, the output shaft of the driving motor drives the cam to rotate, the cam drives the driving rod to make a circular motion, the driving rod cooperates with the strip hole on the connecting arm to make the vibrating hammer make a circular motion, the hammer head of the vibrating hammer swings backward to contact the lower surface of the second baffle plate, and swings forward to contact the lower surface of the first baffle plate, thereby realizing the alternating knocking of the vibrating hammer on the first baffle plate and the second baffle plate, which is conducive to the vibration of the solid particles on the first baffle plate to slide onto the second baffle plate, and is also conducive to the discharge of the solid particles on the second baffle plate;

[0023] The third is to use a combination of a drive motor and a vibrating hammer. The drive motor drives the vibrating hammer to make circular motion through the output shaft. When the drive motor rotates forward, the hammer head contacts the lower surface of the second baffle. When the drive motor rotates reversely, the hammer head contacts the lower surface of the first baffle, which can also make the particles on the first baffle and the second baffle slide off. Different from the second structural design, the output shaft of the drive motor needs to be controlled by a forward and reverse switch;

[0024] The above three designs of the vibration components can all achieve the sliding of particles retained on the first baffle and / or the second baffle, thereby preventing particles from accumulating on the first baffle and the second baffle.

[0025] 3. The welding fume purification equipment disclosed in the present invention has a sliding seat in the welding chamber, which is used to assemble the workpiece welding fixture. The slide is driven in and out of the welding chamber by an electric push rod. In the process of the slide moving out of the welding chamber, the driving rack fixedly connected to the lower surface of the slide is meshed with the driving gear inside the short shaft to rotate the short shaft. The short shaft and the long shaft are driven by a belt, and the long shaft and the equipment door are driven by a first gear and a second gear in synchronous and unequal directions, thereby driving the lower end of the equipment door to flip upward and open, so that the staff can place the welding workpiece. In the process of the slide entering the welding chamber, the equipment door automatically closes the welding chamber to prevent the smoke in the welding chamber from escaping. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 for Figure 1 A partial cross-sectional view of

[0028] Figure 3 A cross-sectional view of the present invention including a driving rack;

[0029] Figure 4 A partial cross-sectional view of the filter mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the internal cross-sectional structure of the purification mechanism of the present invention.

[0031] In the figure: 10-equipment housing, 101-dust outlet, 102-short shaft, 103-driving gear, 104-driving pulley, 11-welding chamber, 12-sliding seat, 121-driving rack, 13-electric push rod, 14-long shaft, 141-driven pulley, 142-belt, 15-equipment door, 151-high temperature resistant glass window, 16-first smoke purification chamber, 17-second smoke purification chamber, 18-equipment assembly chamber, 19-negative pressure generating device;

[0032] 21-first linear drive module, 22-horizontal slide, 23-second linear drive module, 24-vertical slide, 25-welding gun;

[0033] 311 - first baffle, 312 - second baffle, 313 - baffle bar, 32 - second particle filter assembly, 33 - activated carbon filter element, 34 - vibration motor, 35 - vibrating hammer, 351 - bar hole, 352 - driving rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] See also Figure 1-5The present invention provides a technical solution: a welding fume purification device for preventing the accumulation of solid particles, comprising a device housing 10 and a welding mechanism and a welding fume purification mechanism arranged in the device housing 10.

[0036] A welding chamber 11 is arranged on the front upper side of the equipment housing 10, a slide seat 12 is slidably arranged in the welding chamber 11, an electric push rod 13 is arranged in the welding chamber 11, a piston rod of the electric push rod 13 is assembled and connected with the slide seat 12, a driving rack 121 is fixedly connected to the lower surface of the slide seat 12, short shafts 102 are rotatably connected to both sides of the equipment housing 10, a driving gear 103 meshing with the driving rack 121 is coaxially fixedly arranged at one end of the short shaft 102 located inside the equipment housing 10, and a driving pulley 104 is coaxially fixedly arranged at one end of the short shaft 102 located outside the equipment housing 10.

[0037] The upper front side of the equipment housing 10 is rotatably connected to a long shaft 14, and a driven pulley 141 and a first gear (not shown) are coaxially fixedly arranged at both ends of the long shaft 14. The driven pulley 141 is connected to the driving pulley 104 through a belt 142. The upper front side of the equipment housing 10 is hinged with an equipment door 15 through a door shaft, and a second gear (not shown) meshing with the first gear is arranged on the door shaft. A high temperature resistant glass window 151 is arranged inside the equipment door 15.

[0038] A first fume purification chamber 16 connected to the welding chamber 11 is arranged on the upper rear side of the equipment housing 10, and a second fume purification chamber 17 and an equipment assembly chamber 18 are arranged at the lower part of the equipment housing 10, and the second fume purification chamber 17 is connected to the first fume purification chamber 16; a negative pressure generating device 19 is arranged in the equipment assembly chamber 18, and the negative pressure generating device 19 of this embodiment adopts a vortex fan, and the air inlet of the negative pressure generating device 19 is connected to the second fume purification chamber 17, and an exhaust port is arranged on the equipment housing 10.

[0039] The welding mechanism is located in the welding chamber 11, and includes a first linear drive module 21 arranged horizontally, a horizontal slide 22, a second linear drive module 23 arranged vertically, a vertical slide 24 and a welding gun 25. The horizontal slide 22 moves horizontally in the welding chamber 11 driven by the first linear drive module 21, the second linear drive module 23 is mounted on one side of the horizontal slide 22, the vertical slide 24 moves vertically in the welding chamber 11 driven by the second linear drive module 23, and the welding gun 25 is mounted on the vertical slide 24. The welding gun 25 welds the workpiece on the slide 12. The first linear drive module 21 and the second linear drive module 23 use commercially available motor drive modules.

[0040] The welding fume purification mechanism comprises a first particle filter assembly for filtering large-size solid particles, a second particle filter assembly 32 for filtering small-size solid particles, and an activated carbon filter element 33 for adsorbing heavy metals in the fume; the first particle filter assembly is located in the first fume purification chamber 16, and comprises a first baffle 311, a second baffle 312, and a vibrating component, the first baffle 311 and the second baffle 312 are alternately arranged in a plurality, the first baffle 311 is located outside the welding chamber 11, the second baffle 312 is located on the opposite side of the first baffle 311 (on the back plate of the equipment housing), and the first baffle 311 and the second baffle 312 are arranged in a self- It is arranged obliquely downward in the front-to-rear direction, the rear end of the first baffle 311 is located behind the front end of the second baffle 312, and the rear end of the first baffle 311 is located above the front end of the second baffle 312, a baffle 313 is set on the upper surface of the second baffle 312, the rear side of the baffle 313 is a flat structure, the upper surface and the front side of the baffle 313 are an integrated arc structure, and the back plate of the equipment housing 10 on the rear side is provided with a dust outlet 101 at a position close to the second baffle 312; the second particulate matter filter assembly 32 and the active sleeve filter element 33 are both located in the second smoke purification chamber 17, and the second particulate matter filter assembly 32 is located on the rear side of the active sleeve filter element 33.

[0041] The vibration component in the present invention adopts three structural designs:

[0042] 1. Please refer to Figure 4 The vibration component is a vibration motor 34 , and the vibration motor 34 is installed on the lower surface of the second baffle 312 .

[0043] 2. Please refer to Figure 5 The vibration component includes a driving motor and a vibrating hammer 35. The driving motor is assembled and connected to the inner side of the device housing 10. A cam is set on the output shaft of the driving motor. The vibrating hammer 35 is assembled on the lower surface of the second baffle 312 through a rotating shaft. The vibrating hammer 35 includes a connecting arm and a hammer head. A strip hole 351 is set on the connecting arm. A driving rod 352 is movably connected in the strip hole 351. The end of the driving rod 352 is fixedly connected to the edge of the cam 36. When the cam drives the driving rod 352 to rotate circumferentially, the driving rod 352 slides and rolls in the strip hole 351, and the hammer head swings backward to contact the lower surface of the second baffle 312 (as shown by the solid line in the figure), and swings forward to contact the lower surface of the first baffle 311 below the second baffle (as shown by the dotted line in the figure).

[0044] 3. The vibration component includes a driving motor and a vibrator. The driving motor is assembled and connected to the inside or outside of the equipment housing. The vibrator includes a connecting arm and a hammer head. The connecting arm is assembled and connected to the output shaft of the driving motor. The vibrator moves in an arc within its rotation radius driven by the driving rod. The second baffle and the first baffle are both located within the rotation radius of the vibrator. This principle is similar to that of the second structure, so the specific structure is not shown in the figure.

[0045] The working principle of the present invention is as follows:

[0046] The piston rod of the electric push rod 13 is extended to push the slide 12 forward. The driving rack 121 on the lower surface of the slide 12 is meshed with the driving gear 103 to drive the short shaft 102 and the driving pulley 104 to rotate synchronously. The driving pulley 104 drives the driven pulley 141 to rotate through the belt 142. The driven pulley 141 drives the long shaft 14 and the first gear to rotate synchronously. The first gear cooperates with the second gear to drive the equipment door to flip open around the upper door axis. At this time, the workpiece to be welded is installed on the fixture of the slide 12, and then the electric push rod 13 drives the slide 12 to move backward and reset, and the welding chamber of the equipment housing 1 is closed, which can effectively reduce the overflow of smoke and exhaust gas during workpiece welding.

[0047] The first linear drive module 21 drives the horizontal slide 22 to slide in the horizontal direction, and the second linear drive module 23 fixed on the horizontal slide follows. The second linear drive module 23 drives the vertical slide 24 to slide in the vertical direction, and the welding gun 25 fixed on the vertical slide 24 moves to the workpiece welding position to weld the workpiece on the slide 12.

[0048] The negative pressure generating device 19 draws the smoke generated during the workpiece welding process into the first smoke purification chamber through the orifice plate on the rear side of the welding chamber, and enters the second smoke purification chamber after purification by the first particulate matter filter component, and is discharged to the external pipe network after passing through the second particulate matter filter component and the activated carbon filter component.

Claims

1. A welding fume purification device for preventing the accumulation of solid particles, comprising a device housing, a welding mechanism and a welding fume purification mechanism arranged in the device housing, characterized in that: A welding chamber is arranged on the front side of the upper part of the equipment housing, a first fume purification chamber connected to the welding chamber is arranged on the rear side of the upper part of the equipment housing, a second fume purification chamber and an equipment assembly chamber are arranged on the lower part of the equipment housing, and the second fume purification chamber is connected to the first fume purification chamber; a negative pressure generating device is arranged in the equipment assembly chamber, an air inlet of the negative pressure generating device is connected to the second fume purification chamber, and an exhaust port is arranged on the equipment housing; The welding fume purification mechanism comprises a first particle filter assembly for filtering large-size solid particles, a second particle filter assembly for filtering small-size solid particles, and an activated carbon filter element for adsorbing heavy metals in the fume; the first particle filter assembly is located in the first fume purification chamber, and comprises a first baffle, a second baffle and a vibrating component, the first baffle and the second baffle are alternately arranged in a plurality, the first baffle is located outside the welding chamber, the second baffle is located on the opposite side of the first baffle, the first baffle and the second baffle are arranged obliquely downward in a direction from front to back, the rear end of the first baffle is located behind the front end of the second baffle, and the rear end of the first baffle is located above the front end of the second baffle, a baffle bar is arranged on the upper surface of the second baffle, the rear side of the baffle bar is a plane structure, the upper surface and the front side of the baffle bar are an integrated arc surface structure, and a dust outlet is arranged at a position close to the second baffle on the back plate of the equipment housing at the rear side; the second particle filter assembly and the activated carbon filter element are both located in the second fume purification chamber, and the second particle filter assembly is located on the rear side of the activated carbon filter element.

2. The welding fume purification device for preventing solid particulate matter accumulation according to claim 1 is characterized in that: The vibration component is a vibration motor, and the vibration motor is installed on the lower surface of the second baffle.

3. The welding fume purification device for preventing solid particulate matter accumulation according to claim 1 is characterized in that: The vibration component includes a driving motor and a vibrating hammer. The driving motor is assembled and connected to the inner side of the equipment housing. A cam is set on the output shaft of the driving motor. The vibrating hammer is assembled on the lower surface of the second baffle through a rotating shaft. The vibrating hammer includes a connecting arm and a hammer head. A strip hole is set on the connecting arm. A driving rod is movably connected in the strip hole. The end of the driving rod is fixedly connected to the edge of the cam. When the cam drives the driving rod to rotate circumferentially, the driving rod slides and rolls in the strip hole. The hammer head swings backward and contacts the lower surface of the second baffle, and swings forward and contacts the lower surface of the first baffle below the second baffle.

4. The welding fume purification device for preventing solid particulate matter accumulation according to claim 1 is characterized in that: The vibration component includes a driving motor and a vibrating hammer. The driving motor is assembled and connected to the inside or outside of the device housing. The vibrating hammer includes a connecting arm and a hammer head. The connecting arm is assembled and connected to the output shaft of the driving motor. The vibrating hammer moves in an arc within its rotation radius driven by the output shaft of the driving motor. The second baffle plate and the first baffle plate are both located within the rotation radius of the vibrating hammer.

5. The welding fume purification device for preventing solid particulate matter accumulation according to claim 1 is characterized in that: The welding chamber is slidably provided with a sliding seat, and an electric push rod is arranged in the welding chamber. The piston rod of the electric push rod is assembled and connected with the sliding seat, and the lower surface of the sliding seat is fixedly connected with a driving rack. Short shafts are rotatably connected with short shafts on both sides of the equipment casing. One end of the short shaft located in the equipment casing is coaxially fixed with a driving gear meshing with the driving rack, and the other end of the short shaft located outside the equipment casing is coaxially fixed with a driving pulley.

6. The welding fume purification device for preventing the accumulation of solid particles according to claim 5 is characterized in that: The upper front side of the equipment housing is rotatably connected to a long shaft, and the end of the long shaft is coaxially fixed with a driven pulley and a first gear. The driven pulley and the driving pulley are connected by a belt transmission. The upper front side of the equipment housing is hinged with an equipment door through a door shaft, and a second gear meshing with the first gear is arranged on the door shaft.

7. The welding fume purification device for preventing solid particulate matter accumulation according to claim 6 is characterized in that: A high temperature resistant glass window is arranged in the equipment door.

8. The welding fume purification device for preventing solid particulate matter accumulation according to claim 1 is characterized in that: The welding mechanism is located in the welding chamber, and includes a first linear drive module arranged horizontally, a horizontal slide, a second linear drive module arranged vertically, a vertical slide and a welding gun. The horizontal slide moves horizontally in the welding chamber driven by the first linear drive module, the second linear drive module is assembled on one side of the horizontal slide, the vertical slide moves vertically in the welding chamber driven by the second linear drive module, and the welding gun is assembled on the vertical slide.

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