Dust recovery device and method for powder coating processing

Abstract

The invention discloses a dust recovery device and method for powder coating processing, and relates to the technical field of powder coating recovery devices.The dust recovery device comprises a barrel and a filter cartridge, and a discharging barrel is connected to the lower portion of the barrel. According to the dust recovery device and method for powder coating processing, the transmission mechanism drives the lifting mechanism to move, the lifting mechanism drives the lifting rod to move up and down, then the lifting rod drives the filter cylinder to move up and down, the filter cylinder rotates along the spiral groove in the lifting process, and dust on the inner wall of the filter cylinder can be thrown down; the transmission mechanism drives the valve mechanism to operate while driving the lifting mechanism to move, the valve mechanism drives the valve plate to be intermittently opened, secondary flying of a large amount of dust can be prevented, meanwhile, blockage of the discharging barrel is prevented, the height of the barrel can be adjusted through the adjusting mechanism, and the discharging efficiency is improved. And dust recovery can be conveniently carried out on processing equipment with different heights, and the working quality and practicability of the dust recovery device for powder coating processing are improved.

Description

Technical Field

[0001] The invention relates to the technical field of powder coating recovery devices, and in particular to a dust recovery device and method for powder coating processing. Background Art

[0002] Powder coating is a solid powdered synthetic resin coating composed of solid resin, pigment, filler and additives. In the production process of powder coating, the powder outlet at the end of the device is used to discharge the final product into a collection box. Since the dust coating itself has a small particle size and light weight, it is easy to form dust during the discharge process. The scattered powder coating not only causes a large amount of product waste, but also affects the on-site working environment and endangers the health of operators. Therefore, a dust recovery device will be placed at the powder outlet of the processing equipment to recover the dust of the powder coating scattered in the air. The dust recovery device usually uses a fan to collect the dust, which can effectively improve the on-site environment and prevent dust from flying and causing waste.

[0003] The filter cartridge inside the existing dust recovery device for powder coating processing is usually fixed in the cavity by bolts. When the powder coating is blocked in the filter cartridge, a part of the powder coating will fall into the ash hopper due to gravity, and a part of the powder coating will be adsorbed on the inner wall of the filter cartridge. The long-term adsorption of powder coating on the inner wall of the filter cartridge will affect the rising and discharge of airflow, resulting in poor dust recovery and filtration efficiency. After the existing dust recovery device for powder coating processing inhales dust, the dust will slide along the wall of the cartridge into the ash hopper due to gravity, but there is a lack of a shielding structure above the ash hopper, so the dust collected in the ash hopper will be lifted up again due to airflow disturbance.

[0004] Therefore, we propose a dust recovery device and method for powder coating processing. Summary of the invention

[0005] The object of the present invention is to provide a dust recovery device and method for powder coating processing, so as to solve the problem that when the dust recovery device for powder coating processing proposed in the above background technology is working, a part of the powder coating will be adsorbed on the inner wall of the filter cartridge, and the powder coating will be adsorbed on the inner wall of the filter cartridge for a long time, which will affect the rising and discharging of the airflow, resulting in poor dust recovery and filtration efficiency. In addition, after the existing dust recovery device for powder coating processing inhales dust, the dust will slide along the wall of the cartridge into the ash hopper due to gravity, but there is a lack of a shielding structure above the ash hopper, so the dust collected in the ash hopper will be secondary lifted due to airflow disturbance.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The hopper is connected to the filter element of the filter element, and the hopper is connected to the filter element at the bottom of the filter element.

[0008] Preferably, the fixed block is slidably connected to the spiral groove, an air suction fan is connected to one side of the cylinder, an induced draft fan is connected to the top of the cylinder, and the ends of the air suction fan and the induced draft fan away from the cylinder are both connected to a guide cover.

[0009] Preferably, a protective cover is installed on the outer side of the cylinder, and a transmission mechanism is installed on the inner side of the protective cover. The transmission mechanism includes a driving wheel, a second motor, a chain and a driven wheel. The second motor is installed on the inner side of the protective cover by bolts.

[0010] Preferably, one end of the second motor is connected to a driving wheel via a coupling, the outer side of the driving wheel is meshed with a chain, the end of the chain away from the driving wheel is meshed with a driven wheel, and one end of the driving wheel is connected to the first gear via a transmission shaft.

[0011] Preferably, a valve plate is provided inside the discharge barrel, and both ends of the valve plate are fixedly connected with a rotating shaft, and the rotating shaft is connected to the discharge barrel through a bearing, and one end of the rotating shaft is connected to a valve mechanism, and the valve mechanism is connected to the discharge barrel.

[0012] Preferably, the valve mechanism comprises a turntable, a sliding groove, a traction rod and a contact plate, one end of the rotating shaft is fixedly connected to the turntable, and sliding grooves are provided at four corners of the turntable.

[0013] Preferably, a contact plate is slidably attached to one side of the rotating disk, a traction rod is connected to one side of the contact plate via a transmission shaft, and the contact plate is connected to the driven wheel via the transmission shaft.

[0014] Preferably, the bottom end of the ash hopper is connected to a support plate, an adjusting mechanism is connected below the support plate, a base is connected below the adjusting mechanism, sliding rods are fixed at the four corners of the base, the sliding rods and the support plate are slidably connected, and the adjusting mechanism includes a No. 1 motor, a slider, a bidirectional screw and a connecting rod.

[0015] Preferably, a bidirectional screw is installed in the built-in groove of the base through a bearing, and a No. 1 motor is installed at one end of the base and is connected to the bidirectional screw through a coupling. A slider is threadedly sleeved on the outer side of the bidirectional screw, and the slider is slidably sleeved with the inner wall groove of the base, and a connecting rod is installed between the slider and the support plate through a movable shaft.

[0016] A method for recovering dust used in powder coating processing,

[0017] The following steps are involved:

[0018] S: The adjusting mechanism lifts the support plate upward or pulls it downward, and the support plate drives the cylinder to move up and down to adjust the height of the cylinder.

[0019] S: The suction fan generates negative pressure, and the airflow carries the dust into the cylinder from the guide hood. The induced draft fan drives the airflow upward and is discharged. The dust is blocked in the filter cartridge, and finally the dust passes through the discharge barrel and enters the ash hopper for collection.

[0020] S: The transmission mechanism drives the lifting mechanism and the valve mechanism to operate. The lifting mechanism pulls the filter cartridge upward or pushes it downward. The filter cartridge rotates through the spiral groove to throw off the dust adhering to the inner wall of the filter cartridge.

[0021] S: The valve mechanism drives the valve plate to open intermittently, and the valve plate intermittently blocks the opening of the ash hopper to prevent a large amount of dust from being raised again.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the dust recovery device and method for powder coating processing drives the lifting mechanism to move through the transmission mechanism, the lifting mechanism drives the lifting rod to move up and down, and the lifting rod drives the filter cartridge to move up and down, and the filter cartridge rotates along the spiral groove during the lifting process, so that the dust on the inner wall of the filter cartridge can be thrown off, and the separation efficiency of the airflow and the dust is improved. The transmission mechanism drives the valve mechanism to operate while driving the lifting mechanism to move, and the valve mechanism drives the valve plate to open intermittently, which can prevent a large amount of dust from flying secondary and prevent the discharge barrel from being blocked. Before the dust recovery device for powder coating processing works, the height of the barrel can be adjusted by the adjustment mechanism, so as to facilitate the dust recovery of processing equipment at different heights, thereby improving the working quality and practicality of the dust recovery device for powder coating processing.

[0023] 1. The dust recovery device and method for powder coating processing, the induced draft fan drives the airflow to carry the dust upward, the dust is blocked in the filter cartridge, the airflow is discharged from the cartridge from the guide cover of the induced draft fan, and then the No. 2 motor is started to drive the driving wheel to rotate, the driving wheel drives the No. 1 gear to rotate, the No. 1 gear is meshed and connected with the No. 2 gear, the No. 1 gear then drives the No. 2 gear to rotate, the No. 2 gear then drives the No. 1 gear and the No. 2 gear to rotate at the same time, because the No. 1 gear and the No. 2 gear rotate in opposite directions, so that the No. 1 gear and the No. 2 gear are meshed with the gear ring in turn, and then drive the lifting rod to move up and down, and at the same time the lifting rod pulls the fixed rod to drive the filter cartridge to move up and down, because the fixed block is affected by the spiral groove Restriction: When the filter cartridge moves up and down, the filter cartridge drives the fixed block to slide in the spiral groove, so that the filter cartridge drives the fixed rod to rotate on the bearing of the lifting rod, so that the filter cartridge can rotate while moving up and down. The rotation of the filter cartridge can generate centrifugal force, change the direction of the airflow, make the contact between the airflow and the filter cartridge more uniform, and make the separation of dust and airflow more efficient with the help of the rotating motion. The rotating action of the filter cartridge can prevent dust particles from adhering to the inner wall of the filter cartridge for a long time, reducing the time and frequency of manual cleaning, and the scraper ring moves downward or upward with the rotation of the filter cartridge, which can scrape off the dust attached to the inner wall of the cartridge, which is convenient for collection, thereby improving the practicality of the dust recovery device for powder coating processing;

[0024] 2. The dust recovery device and method for powder coating processing, when the No. 2 motor drives the driving wheel to rotate, the driving wheel traction chain drives the driven wheel to rotate, and the driven wheel drives the sticking plate and the traction rod to rotate through the transmission shaft. Before the traction rod enters the sliding groove, the edge of the sticking plate slides in the concave part of the turntable to prevent the turntable from rotating. When one end of the traction rod enters the sliding groove, the notch of the sticking plate contacts the turntable, so that the turntable loses the restriction of the sticking plate, and the traction rod drives the turntable to rotate, and the turntable drives the rotating shaft to drive the valve plate to rotate, so that the dust can slide into the dust collecting hopper for collection. The traction rod intermittently slides into the sliding groove, which can drive the valve plate to open intermittently. While the dust is discharged and collected, it can also avoid the situation that the dust is secondary lifted due to air flow disturbance, so that the dust can be discharged smoothly. At the same time, the rotation of the valve plate can prevent the blockage of the discharge barrel, thereby improving the working quality of the dust recovery device for powder coating processing;

[0025] 3. The dust recovery device and method for powder coating processing starts the No. 1 motor to drive the bidirectional screw to rotate, so that the bidirectional screw and the slider are threadedly engaged, and then the slider drives the connecting rod to move closer to or away from each other on the outside of the bidirectional screw, so that the connecting rod lifts up or pulls down the support plate, and at the same time, the four corners of the support plate slide on the slide bar to guide the support plate. The height of the support plate and the cylinder can be quickly adjusted, and then the height of the suction fan can be adjusted, so that the airflow carries the dust into the cylinder, thereby improving the convenience of the dust recovery device for powder coating processing. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the transmission mechanism of the present invention;

[0028] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the base of the present invention;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the cylinder of the present invention;

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the filter cartridge of the present invention;

[0032] Figure 7 It is a schematic diagram of the three-dimensional cross-sectional structure of the spiral groove of the present invention;

[0033] Figure 8 It is a schematic diagram of the three-dimensional cross-sectional structure of the lower barrel of the present invention;

[0034] Fig. 9 It is a schematic diagram of the three-dimensional structure of the lifting mechanism of the present invention;

[0035] Fig.10 It is a schematic diagram of the three-dimensional structure of the valve mechanism of the present invention;

[0036] Fig.11 It is a schematic diagram of the three-dimensional cross-sectional structure of the scraper ring of the present invention.

[0037] In the figure: 1, cylinder; 2, discharge cylinder; 3, ash hopper; 4, base; 5, support plate; 6, adjustment mechanism; 601, No. 1 motor; 602, slider; 603, bidirectional screw rod; 604, connecting rod; 7, slide rod; 8, transmission mechanism; 801, driving wheel; 802, No. 2 motor; 803, chain; 804, driven wheel; 9, valve mechanism; 901, turntable; 902, sliding groove; 903, traction Rod; 904, plate; 10, protective cover; 11, guide cover; 12, induced draft fan; 13, suction fan; 14, valve plate; 15, rotating shaft; 16, scraper ring; 17, filter cartridge; 18, lifting mechanism; 1801, gear No. 1; 1802, gear No. 2; 1803, gear disc No. 1; 1804, gear disc No. 2; 19, spiral groove; 20, fixing block; 21, fixing rod; 22, gear ring; 23, lifting rod. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0039] See also Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8 The present invention provides a technical solution: a dust recovery device for powder coating processing, comprising a cylinder 1 and a filter cartridge 17, wherein a lower material cylinder 2 is connected to the lower part of the cylinder 1, a dust collecting hopper 3 is installed at the lower end of the lower material cylinder 2 by bolts, the filter cartridge 17 is arranged in the inner cavity of the cylinder 1, an air suction fan 13 is connected to one side of the cylinder 1, an induced draft fan 12 is connected to the upper part of the cylinder 1, and the air suction fan 13 and the induced draft fan 12 are connected to a deflector 11 at one end away from the cylinder 1.

[0040] See also Figure 2 , Figure 5-Figure 7 , Fig. 9 and Fig.11 A lifting mechanism 18 is installed on the inner wall of the cylinder 1 close to the filter cartridge 17, a lifting rod 23 is installed on the inner side of the lifting mechanism 18, and a toothed ring 22 is evenly distributed on the outer side of the lifting rod 23. The bottom end of the toothed ring 22 is connected to a fixing rod 21 through a bearing, and the bottom end of the fixing rod 21 is connected to the filter cartridge 17. The lifting mechanism 18 includes a first gear 1801, a second gear 1802, a first toothed disc 1803 and a second toothed disc 1804. The first toothed disc 18 is installed on the inner wall of the cylinder 1 through a bearing. 03 and No. 2 toothed disc 1804, one side of the No. 1 toothed disc 1803 and the No. 2 toothed disc 1804 are fixedly connected with the No. 2 gear 1802, one side of the No. 2 gear 1802 is meshedly connected with the No. 1 gear 1801, the bottom edge of the filter cartridge 17 is connected with a scraper ring 16, both ends of the filter cartridge 17 are connected with a fixed block 20, a spiral groove 19 is opened on the inner wall of the cylinder 1 near the fixed block 20, the fixed block 20 and the spiral groove 19 are slidably connected, and the cross-sectional shape of the scraper ring 16 is set to be a triangle.

[0041] In specific implementation, the filter cartridge 17 inside the existing powder coating processing dust recovery device is usually fixed in the cavity by bolts. When the powder coating is blocked in the filter cartridge 17, part of the powder coating will fall into the collection component due to gravity, and part of the powder coating will be adsorbed on the inner wall of the filter cartridge 17. The long-term adsorption of the powder coating will affect the rising and discharge of the airflow, resulting in poor recovery and filtration efficiency. After the airflow carries the dust into the cylinder 1, the induced draft fan 12 drives the airflow to carry the dust upward, and the powder The dust is blocked in the filter cartridge 17, and the airflow is discharged from the cylinder body 1 through the deflector 11 of the induced draft fan 12. Then the No. 2 motor 802 is started to drive the driving wheel 801 to rotate, and the driving wheel 801 drives the No. 1 gear 1801 to rotate. The No. 1 gear 1801 is meshed with the No. 2 gear 1802, and the No. 1 gear 1801 drives the No. 2 gear 1802 to rotate. The No. 2 gear 1802 drives the No. 1 gear 1803 and the No. 2 gear 1804 to rotate at the same time. Since the No. 1 gear 1803 and the No. 2 gear 1804 are in phase with each other, the No. 1 gear 1803 and the No. 2 gear 1804 are in phase with each other. Rotating in the opposite direction causes the No. 1 toothed disc 1803 and the No. 2 toothed disc 1804 to mesh with the toothed ring 22 in turn, thereby driving the lifting rod 23 to move up and down. At the same time, the lifting rod 23 pulls the fixed rod 21 to drive the filter cartridge 17 to move up and down. Since the fixed block 20 is restricted by the spiral groove 19, when the filter cartridge 17 moves up and down, the filter cartridge 17 drives the fixed block 20 to slide in the spiral groove 19, so that the filter cartridge 17 drives the fixed rod 21 to rotate on the bearing of the lifting rod 23, so that the filter cartridge 17 can rotate while moving up and down. The rotation of the filter cartridge 17 can generate centrifugal force, change the direction of the airflow, and make the contact between the airflow and the filter cartridge 17 more uniform. With the help of the rotational motion, the separation of dust and airflow is more efficient. The rotation of the filter cartridge 17 can prevent dust particles from adhering to the inner wall of the filter cartridge 17 for a long time, reducing the time and frequency of manual cleaning, and the scraper ring 16 moves downward or upward as the filter cartridge 17 rotates, which can scrape off the dust attached to the inner wall of the cylinder 1, which is convenient for collection, thereby improving the practicality of the dust recovery device for powder coating processing.

[0042] See also Figure 1 , Figure 2 , Figure 5 , Fig. 9 and Fig.10A protective cover 10 is installed on the outside of the cylinder 1, and a transmission mechanism 8 is installed on the inside of the protective cover 10. The transmission mechanism 8 includes a driving wheel 801, a second motor 802, a chain 803 and a driven wheel 804. The second motor 802 is installed on the inside of the protective cover 10 by bolts, and one end of the second motor 802 is connected to the driving wheel 801 through a coupling. The outer side of the driving wheel 801 is meshed with a chain 803, and the end of the chain 803 away from the driving wheel 801 is meshed with a driven wheel 804. One end of the driving wheel 801 is connected to the first gear 1801 through a transmission shaft. A valve plate 14 is provided inside the unloading barrel 2, and both ends of the valve plate 14 are fixedly connected. A rotating shaft 15 is connected, and the rotating shaft 15 is connected to the discharge barrel 2 through a bearing. One end of the rotating shaft 15 is connected to a valve mechanism 9, and the valve mechanism 9 is connected to the discharge barrel 2. The valve mechanism 9 includes a turntable 901, a sliding groove 902, a traction rod 903 and a contact plate 904. One end of the rotating shaft 15 is fixedly connected to the turntable 901, and sliding grooves 902 are provided at the four corners of the turntable 901. A contact plate 904 is slidably attached to one side of the turntable 901, and a traction rod 903 is connected to one side of the contact plate 904 through a transmission shaft. The contact plate 904 is connected to the driven wheel 804 through a transmission shaft, and a notch is provided on one side of the contact plate 904. The turntable 901 is configured as a cross structure.

[0043] During specific implementation, a dust collecting hopper 3 for collecting dust is usually provided at the bottom of the dust recovery device for powder coating processing. Due to the effect of gravity, the dust slides downward along the inner wall of the cylinder 1, but there is no shielding structure at the opening of the dust collecting hopper 3, which causes a large amount of dust to easily fly into the cylinder 1 again, thereby extending the working time of dust recovery. At the same time, the No. 2 motor 802 drives the active wheel 801 to rotate, and the active wheel 801 pulls the chain 803 to drive the driven wheel 804 to rotate. The driven wheel 804 then drives the contact plate 904 and the traction rod 903 to rotate through the transmission shaft. Before the traction rod 903 enters the sliding groove 902, the edge of the contact plate 904 slides in the recess of the turntable 901, which can prevent the turntable 901 from rotating. After one end of the traction rod 903 enters the sliding groove 902, the notch of the plate 904 contacts the turntable 901, so that the turntable 901 loses the restriction of the plate 904, and the traction rod 903 drives the turntable 901 to rotate, and the turntable 901 causes the rotating shaft 15 to drive the valve plate 14 to rotate 90 degrees, and the dust can slide into the dust hopper 3 for collection. The traction rod 903 intermittently slides into the sliding groove 902, which can drive the valve plate 14 to open intermittently. While the dust is discharged and collected, it can also avoid the secondary lifting of the dust due to air flow disturbance, so that the dust can be discharged smoothly. At the same time, the rotation of the valve plate 14 can prevent blockage in the discharge barrel 2, thereby improving the working quality of the dust recovery device for powder coating processing.

[0044] See also Figure 1 , Figure 3 and Figure 4 The bottom end of the ash hopper 3 is connected to a support plate 5, and an adjusting mechanism 6 is connected to the bottom of the support plate 5. The bottom of the adjusting mechanism 6 is connected to a base 4. Slide rods 7 are fixed at the four corners of the base 4. The slide rods 7 and the support plate 5 are slidably connected. The adjusting mechanism 6 includes a No. 1 motor 601, a slider 602, a bidirectional screw rod 603 and a connecting rod 604. A bidirectional screw rod 603 is installed in the built-in groove of the base 4 through a bearing. One end of the base 4 is equipped with a No. 1 motor 601 connected to the bidirectional screw rod 603 through a coupling. A slider 602 is threadedly connected to the outer side of the bidirectional screw rod 603. The slider 602 is slidably connected to the inner wall groove of the base 4. A connecting rod 604 is installed between the slider 602 and the support plate 5 through a movable shaft.

[0045] In specific implementation, since the height of the collection port of most dust recovery devices for powder coating processing is usually fixed and not convenient to adjust according to the height of the processing equipment, the No. 1 motor 601 can be started to drive the bidirectional screw 603 to rotate, so that the bidirectional screw 603 and the slider 602 are threadedly engaged, and then the slider 602 drives the connecting rod 604 to move closer to or away from each other on the outside of the bidirectional screw 603, so that the connecting rod 604 lifts up or pulls the support plate 5 downward, and at the same time, the four corners of the support plate 5 slide on the slide bar 7 to guide the support plate 5, so that the height of the support plate 5 and the cylinder 1 can be quickly adjusted, and then the height of the suction fan 13 can be adjusted, so that the airflow carries the dust into the cylinder 1, thereby improving the convenience of the dust recovery device for powder coating processing.

[0046] A method for recovering dust used in powder coating processing,

[0047] The following steps are involved:

[0048] S1: The adjusting mechanism 6 lifts the support plate 5 upward or pulls it downward, and the support plate 5 drives the cylinder 1 to move up and down to adjust the height of the cylinder 1.

[0049] S2: The suction fan 13 generates negative pressure, and the airflow carries dust into the cylinder 1 from the air guide cover 11. The induced draft fan 12 drives the airflow upward and discharged, and the dust is blocked in the filter cartridge 17. Finally, the dust passes through the lower barrel 2 and enters the ash hopper 3 for collection.

[0050] S3: The transmission mechanism 8 drives the lifting mechanism 18 and the valve mechanism 9 to operate. The lifting mechanism 18 pulls the filter cartridge 17 upward or pushes it downward. The filter cartridge 17 rotates through the spiral groove 19 to throw off the dust adhering to the inner wall of the filter cartridge 17.

[0051] S4: The valve mechanism 9 drives the valve plate 14 to open intermittently, and the valve plate 14 intermittently blocks the opening of the dust collecting hopper 3 to prevent a large amount of dust from being raised again.

[0052] In summary, the height of the support plate 5 is adjusted by the adjusting mechanism 6 according to the height of the powder coating processing equipment, and then the suction fan 13 rotates to generate negative pressure, so that the airflow carries the dust into the inner cavity of the cylinder 1 from the air guide cover 11, and at the same time, the induced draft fan 12 generates negative pressure to suck out the airflow upward, and the airflow carries the dust upward, and the dust is blocked in the filter cartridge 17. The airflow is discharged from the cylinder 1 through the induced draft fan 12 and the air guide cover 11, and after the dust recovery work is carried out for a period of time, the transmission mechanism 8 drives the lifting mechanism 18 to move, and the lifting mechanism 18 drives the lifting rod 23 to drive the filter cartridge 17 to move up and down. At the same time, through the spiral groove 19, the filter cartridge 17 rotates, and the dust adsorbed on the inner wall of the filter cartridge 17 can be thrown off. The filter cartridge 17 can be lifted and rotated while improving the separation efficiency of the airflow and the dust. While the lifting mechanism 18 moves, the transmission mechanism 8 drives the valve mechanism 9 to move. The valve mechanism 9 can drive the valve plate 14 to open and close intermittently, which can prevent a large amount of dust from flying again, facilitate dust recovery, and improve the working efficiency and practicality of the dust recovery device for powder coating processing. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust recovery device for powder coating processing, comprising a cylinder (1) and a filter cartridge (17), characterized in that: A lower material cylinder (2) is connected to the lower part of the cylinder (1), and an ash collecting bucket (3) is installed at the lower end of the lower material cylinder (2) by means of bolts. The filter cartridge (17) is arranged in the inner cavity of the cylinder (1), and a lifting mechanism (18) is installed on the inner wall of the cylinder (1) close to the filter cartridge (17). A lifting rod (23) is provided on the inner side of the lifting mechanism (18), and gear rings (22) are arranged at equal intervals on the outer side of the lifting rod (23). The lower end of the gear ring (22) is connected to a fixing rod (21) by means of a bearing, and the lower end of the fixing rod (21) is connected to the filter cartridge (17). The lifting mechanism (18) comprises a first gear (1801), a second gear (1802), and a second gear (1803). The filter cartridge (17) comprises a first gear (1802), a first gear disc (1803) and a second gear disc (1804), the first gear disc (1803) and the second gear disc (1804) being mounted on the inner wall of the cylinder (1) via a bearing, one side of each of the first gear disc (1803) and the second gear disc (1804) being fixedly connected to a second gear (1802), one side of the second gear (1802) being meshingly connected to the first gear (1801), the bottom edge of the filter cartridge (17) being connected to a scraper ring (16), both ends of the filter cartridge (17) being connected to a fixing block (20), and a spiral groove (19) being provided on the inner wall of the cylinder (1) close to the fixing block (20).

2. A dust recovery device for powder coating processing according to claim 1, characterized in that: The fixed block (20) is slidably connected to the spiral groove (19); an air suction fan (13) is connected to one side of the cylinder (1); an induced draft fan (12) is connected to the top of the cylinder (1); and the ends of the air suction fan (13) and the induced draft fan (12) away from the cylinder (1) are both connected to a flow guide cover (11).

3. A dust recovery device for powder coating processing according to claim 1, characterized in that: A protective cover (10) is installed on the outer side of the cylinder (1), and a transmission mechanism (8) is installed on the inner side of the protective cover (10). The transmission mechanism (8) comprises a driving wheel (801), a second motor (802), a chain (803) and a driven wheel (804). The second motor (802) is installed on the inner side of the protective cover (10) by bolts.

4. A dust recovery device for powder coating processing according to claim 3, characterized in that: One end of the second motor (802) is connected to the driving wheel (801) through a coupling, the outer side of the driving wheel (801) is meshed with a chain (803), one end of the chain (803) away from the driving wheel (801) is meshed with a driven wheel (804), and one end of the driving wheel (801) is connected to the first gear (1801) through a transmission shaft.

5. A dust recovery device for powder coating processing according to claim 4, characterized in that: A valve plate (14) is provided inside the material discharge barrel (2), and a rotating shaft (15) is fixedly connected to both ends of the valve plate (14). The rotating shaft (15) is connected to the material discharge barrel (2) via a bearing. One end of the rotating shaft (15) is connected to a valve mechanism (9), and the valve mechanism (9) is connected to the material discharge barrel (2).

6. A dust recovery device for powder coating processing according to claim 5, characterized in that: The valve mechanism (9) comprises a rotating disk (901), a sliding groove (902), a traction rod (903) and a contact plate (904); one end of the rotating shaft (15) is fixedly connected to the rotating disk (901); and sliding grooves (902) are provided at four corners of the rotating disk (901).

7. A dust recovery device for powder coating processing according to claim 6, characterized in that: A contact plate (904) is slidably attached to one side of the rotating disk (901), a traction rod (903) is connected to one side of the contact plate (904) via a transmission shaft, and the contact plate (904) is connected to the driven wheel (804) via a transmission shaft.

8. The dust recovery device for powder coating processing according to claim 1, characterized in that: The bottom end of the ash hopper (3) is connected to a support plate (5), the support plate (5) is connected below an adjustment mechanism (6), the adjustment mechanism (6) is connected below a base (4), four corners of the base (4) are fixed with sliding rods (7), the sliding rods (7) and the support plate (5) are slidably connected, and the adjustment mechanism (6) comprises a No. 1 motor (601), a slider (602), a bidirectional screw rod (603) and a connecting rod (604).

9. A dust recovery device for powder coating processing according to claim 8, characterized in that: A bidirectional screw rod (603) is installed in the built-in groove of the base (4) via a bearing, and a first motor (601) is installed at one end of the base (4) and is connected to the bidirectional screw rod (603) via a coupling, a slider (602) is sleeved on the outer thread of the bidirectional screw rod (603), and the slider (602) and the inner wall groove of the base (4) are slidably sleeved, and a connecting rod (604) is installed between the slider (602) and the support plate (5) via a movable shaft.

10. A method for recovering dust from powder coating processing, characterized in that: The following steps are involved: S1: The adjusting mechanism (6) lifts the support plate (5) upward or pulls it downward, and the support plate (5) drives the cylinder (1) to move up and down, thereby adjusting the height of the cylinder (1). S2: The suction fan (13) generates negative pressure, and the airflow carries the dust into the cylinder (1) from the air guide cover (11). The induced draft fan (12) drives the airflow upward and is discharged. The dust is blocked in the filter cartridge (17). Finally, the dust passes through the discharge barrel (2) and enters the dust collecting hopper (3) for collection. S3: The transmission mechanism (8) drives the lifting mechanism (18) and the valve mechanism (9) to operate, the lifting mechanism (18) pulls the filter cartridge (17) upward or pushes it downward, the filter cartridge (17) rotates through the spiral groove (19), and the dust adhering to the inner wall of the filter cartridge (17) is thrown off. S4: The valve mechanism (9) drives the valve plate (14) to open intermittently, and the valve plate (14) intermittently blocks the opening of the dust collecting hopper (3) to prevent a large amount of dust from being raised again.

Images