A dust recovery device for powder coating production and its recovery process

Abstract

The present invention discloses a dust recovery device for powder coating production and a recovery process thereof, which relates to the technical field of dust recovery, and includes a base and a dust suction mechanism and a recovery mechanism arranged above the base. The dust suction mechanism includes a main pipeline, an air outlet pipe, an exhaust fan and a filter assembly. The main pipeline is arranged above the base, and one end of the main pipeline is an opening, and the other end of the main pipeline is provided with an air outlet pipe. The exhaust fan is arranged at one end of the air outlet pipe, and a filter assembly is arranged inside the main pipeline; the filter assembly is rotatably arranged inside the main pipeline. The present invention aims to improve the problems in the prior art that in the production of powder coatings, the workshop air contains a lot of dust, which affects the health of the workers, and the dust is emitted in the air and causes waste. The present invention has the advantages of filtering and purifying the air containing dust through the filter assembly, and the filtered dust can be automatically recovered and stored through the recovery mechanism.

Description

Technical Field

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

[0002] Powder coating is a solid powdered synthetic resin coating composed of solid resin, pigment, filler and additives. Unlike ordinary solvent-based coatings and water-based coatings, its dispersion medium is air instead of solvent and water.

[0003] In the prior art, in the production of powder coatings, it is inevitable that powder coating dust will be contained in the workshop air. This type of dust in the air will affect the health of the workers. Therefore, the workshop air needs to be cleaned and the powder dust in the air needs to be filtered and removed through a filter component. In addition, in order to avoid the powder dust being wasted, the filtered powder dust needs to be recovered. Therefore, a device is needed that can filter and purify the air in the powder coating production workshop and at the same time recycle the filtered powder dust.

[0004] In view of the above technical problems, the present invention discloses a dust recovery device for powder coating production and a recovery process thereof. The present invention has the advantages of filtering and purifying the air containing dust through a filter component, and the filtered dust can be automatically recovered and stored through a recovery mechanism. At the same time, when the dust on the filter component is recovered, there is no need to stop the exhaust fan, and the exhaust fan can continue to work to ensure the purification of the workshop air. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a dust recovery device for powder coating production and a recovery process thereof to solve the technical problems in the prior art that in powder coating production, the workshop air contains more dust, which affects the health of the workers, and the dust is emitted in the air and causes waste. The present invention has the advantages of filtering and purifying the dust-containing air through a filter component, and the filtered dust can be automatically recovered and stored through a recovery mechanism. At the same time, when the dust on the filter component is recovered, there is no need to stop the exhaust fan, and the exhaust fan can continue to work to ensure the purification of the workshop air.

[0006] The present invention is implemented through the following technical scheme: The present invention discloses a dust recovery device for powder coating production, comprising a base and a dust suction mechanism and a recovery mechanism arranged above the base, the dust suction mechanism comprising a main pipeline, an air outlet pipe, an exhaust fan and a filter assembly, the main pipeline is arranged above the base, one end of the main pipeline is an opening, the other end of the main pipeline is provided with an air outlet pipe, the exhaust fan is arranged at one end of the air outlet pipe, a filter assembly is arranged inside the main pipeline, and the filter assembly is located between the air outlet pipe and the opening;

[0007] The filter assembly is rotatably arranged inside the main pipeline;

[0008] The filter assembly includes a filter frame, a filter cloth, a gear ring, a first support rod and a second support rod. The filter frame is rotatably arranged inside the main pipe, the filter cloth is arranged on the filter frame, the first support rod is rotatably arranged on one side of the center of the filter frame toward the air outlet pipe, and the other end of the first support rod is fixedly connected to the bottom inner wall of the main pipe, the second support rod is rotatably arranged on the side of the center of the filter frame toward the opening of the main pipe, and the other end of the second support rod is fixedly connected to the bottom inner wall of the main pipe, the first support rod is connected to the exhaust block toward the filter frame, and the outer ring of the filter frame is fixedly sleeved with a gear ring;

[0009] The recovery mechanism comprises an air supply assembly and a driving assembly. The air supply assembly is used to supply air to the first support rod, and the driving assembly is used to rotate the filter assembly.

[0010] Furthermore, the filter frame includes a fixed ring, a center column and a fixed strip. The inner wall of the inner ring of the main pipeline is provided with an annular groove. The outer ring of the fixed ring is inserted into the inside of the annular groove. The inner walls on both sides of the annular groove are respectively slidably sealed with the outer walls on both sides of the fixed ring. The center column is arranged at the center of the fixed ring, and the center column, the fixed ring and the main pipeline are concentric with each other. The outer wall of the outer ring of the center column is fixedly provided with a fixed strip, and there are at least three fixed strips. The other ends of the three fixed strips are fixedly connected to the inner wall of the inner ring of the fixed ring. The filter cloth is arranged on the inner ring of the fixed ring, and the gear ring is fixedly sleeved on the outer ring of the fixed ring.

[0011] Furthermore, the first support rod and the second support rod each include rod one and rod two, and rod one is arranged horizontally, rod two is arranged vertically, one end of rod one is rotatably arranged with the center column, the other end of rod one is fixedly connected to the top end of rod two through a bent rod, and the bottom end of rod two is fixedly connected to the bottom inner wall of the main pipeline.

[0012] Furthermore, an air inlet hole is provided inside the second rod of the first support rod, and a connecting groove is provided on one side inside the second rod of the first support rod, and the connecting groove is connected with the air inlet hole, and the connecting groove also penetrates the outer wall of the second side of the second rod of the first support rod, an exhaust groove is horizontally provided inside the exhaust block, and the exhaust groove penetrates the two side end surfaces of the exhaust block, the exhaust groove is connected with the connecting groove, a dust inlet cover is fixedly provided on the end surface of the side facing the filter cloth direction of the second support rod, a through hole is provided inside the second rod of the second support rod, and the through hole penetrates the bottom surface of the second rod, the through hole is connected with the dust inlet cover through the connecting groove, the dust inlet cover is arranged on the symmetrical surface of the exhaust block, the opening of the dust inlet cover covers the exhaust groove, and the width of the exhaust block is set to several equal parts of the inner circle area of ​​the fixed ring.

[0013] Furthermore, the air supply assembly includes a reciprocating drive unit and an air cylinder unit. The reciprocating drive unit is arranged above the base and below the main pipeline. The air cylinder unit is also arranged above the base. The reciprocating drive unit is used to control the air cylinder unit to reciprocately inflate and exhaust.

[0014] Furthermore, the reciprocating drive part includes a fixed seat, a turntable, a driving motor, a driving shaft, a control handle, a sliding seat, a sliding rod and a connecting shaft. The fixed seat is fixedly arranged above the base, and the turntable is rotatably arranged above the fixed seat. The turntable is driven to rotate by the driving motor. The driving shaft is fixedly arranged at the upper end surface of the turntable close to the outer ring, and the sliding seat is fixedly arranged on the other side of the upper end surface of the fixed seat. The sliding rod is slidably arranged inside the sliding seat, and a connecting shaft is fixedly arranged above one end of the sliding rod. The control handle is rotatably sleeved on the outer wall of the connecting shaft, and the other end of the control handle is rotatably sleeved on the outside of the driving shaft. The cylinder part includes a cylinder body, a piston, a pumping rod, an air outlet nozzle and an air inlet nozzle. The cylinder body is fixedly connected to the fixed seat, and a piston is slidably arranged inside the cylinder body. A pumping rod is fixedly arranged on one side of the piston, and the other end of the pumping rod extends to the outside of the cylinder body. One end of the pumping rod located outside the cylinder body is fixedly connected to one end of the sliding rod through a connecting plate. One end of the cylinder body is fixedly provided with an air inlet nozzle and an air outlet nozzle, and the air inlet nozzle and the air outlet nozzle are both set to unidirectional flow.

[0015] Furthermore, the air outlet nozzle is connected to the air inlet hole of the first support rod 2 through a hose, and the air inlet nozzle is connected to the through hole of the second support rod 2 through a hose. A storage barrel is arranged above the base, and the storage barrel includes a barrel body, a barrel cover, a filter cover, an air inlet pipe and an air outlet pipe. The barrel body is fixedly arranged above the base, the barrel cover is detachably installed above the barrel body, and the filter cover is detachably arranged below the barrel cover. An air inlet pipe is fixedly arranged at the center of the barrel cover, and the air inlet pipe is connected to the filter cover. An air outlet pipe is fixedly arranged on one side of the outer wall of the bottom of the barrel body, and the air outlet pipe is located outside the filter cover, and the air outlet pipe is connected to the inside of the barrel body. The air inlet nozzle of the air cylinder is connected to the air outlet pipe through a hose, and the air inlet pipe is connected to the through hole of the second support rod 2 through the hose.

[0016] Furthermore, the driving assembly includes a control part and a transmission part. The control part includes a base, a rotating shaft, a fixed sleeve, a passive control block, a fixed column and an active control block. The base is fixedly arranged above the base. A rotating shaft is rotatably arranged on one side of the base. The outer fixed sleeve of the rotating shaft is connected to the fixed sleeve. A passive control block is arranged in an annular array on the outer wall of the fixed sleeve, and a plurality of passive control blocks are arranged. A hypotenuse is arranged at one end of the passive control block. The rotating shaft, the fixed sleeve and the drawing rod are all coaxially arranged. A fixed column is arranged at one end of the drawing rod, and the fixed column is fixedly connected to the connecting plate. The fixed column is connected to the connecting plate. The draw rod is arranged coaxially, and an active control block is arranged in a circular array at one end of the fixed column, and there are multiple active control blocks. The active control block and the passive control block are arranged opposite to each other, and the number of active control blocks is the same as that of the passive control blocks. One end of the active control block facing the passive control block is also arranged as a hypotenuse, and the hypotenuses at one end of the active control block and the passive control block are configured so that when the active control block moves toward the passive control block, the hypotenuse at one end of the active control block contacts the hypotenuse at one end of the passive control block, and the continued lateral movement of the active control block pushes the passive control block to perform a circular displacement.

[0017] Furthermore, the transmission part includes gear one, gear two, a synchronization shaft and gear three, one gear set is connected to the outside of the fixed sleeve, gear two is meshingly connected to the top of gear one, a clearance groove is opened at the outer wall of the bottom of the main pipeline, gear three is arranged inside the clearance groove through the rotation of the synchronization shaft, and gear three is meshingly connected to the gear ring, one end of the synchronization shaft extends to one end of the main pipeline, and gear two is fixedly sleeved on the outside of the synchronization shaft, a torsion spring is arranged between the fixed sleeve and the base, and a ratchet mechanism is arranged between the fixed sleeve and gear one for connection.

[0018] A recycling process of a dust recovery device for powder coating production, comprising the following steps:

[0019] Step 1: First, turn on the exhaust fan to filter the air. The exhaust fan starts, takes in air through the opening of the main duct, and filters it through the filter cloth on the fixed ring. The filtered air is discharged through the air outlet pipe, and the dust in the air is filtered and retained on the filter cloth;

[0020] Step 2: When the dust on the filter cloth accumulates too much and affects the filtering efficiency of the filter cloth, the filter cloth is cleaned and the dust is recovered;

[0021] Step 3: Turn on the drive motor, which drives the turntable to rotate, and the control handle makes the slide bar reciprocate. When the slide bar moves toward the opening direction of the main pipeline, the slide bar drives the pumping rod to move, and the pumping rod movement drives the piston to move, so that the cylinder part is exhausted, and the air outlet nozzle will discharge the exhausted gas to the air inlet hole through the hose, and then discharge it to the filter cloth through the connecting groove and the exhaust groove, and the filter cloth is backblown, and the dust blown back will be blown into the dust inlet hood;

[0022] Step 4: Then the turntable continues to rotate, so that when the slide bar moves toward the air outlet pipe, the movement of the pumping rod drives the piston to move, so that the air cylinder part is pumped out. When the air cylinder part is pumped out, the dust inside the dust hood is sucked downward through the air inlet nozzle and the hose, so that the dust inside the dust hood can quickly sink to the bottom of the filter cover;

[0023] Step 5: When the slide bar continues to move toward the air outlet duct and makes the passive control block on one side of the connecting plate contact the active control block, the passive control block will make the fixed sleeve rotate by an angle, and the fixed sleeve will drive gear 1 to rotate by an angle, gear 1 will drive gear 2 to rotate by an angle, then gear 2 will drive gear 3 to rotate, gear 3 will drive the gear ring to rotate, so that the fixed ring will rotate by an angle, so that the filter cloth will rotate relative to the exhaust block, and the filter cloth at other positions will be backblown;

[0024] Step 6: When the slide bar continues to reciprocate and move toward the main pipe opening, the active control block will gradually separate from the passive control block. After that, without the control of the passive control block, the fixed sleeve will be reset and rotated by the action of the torsion spring. Due to the setting of the ratchet mechanism, the fixed sleeve will be reset and rotated, that is, the fixed sleeve will drive the passive control block to reset and rotate, but the gear 1 will not rotate, so that the passive control block will be reset to prepare for the next cooperation with the active control block.

[0025] The present invention has the following advantages:

[0026] The present invention is provided with a dust suction mechanism and a recovery mechanism, so that by starting the exhaust fan, the dust-laden gas can enter through the main duct opening and then be filtered through the filter assembly, thereby filtering the dust in the air through the filter cloth, purifying the air in the workshop and ensuring the air environment in the workshop. In addition, when a lot of dust accumulates on the filter cloth, causing the filtering efficiency of the filter cloth to decrease, the driving motor can be started to drive the rotating disk to rotate, so that the sliding rod can reciprocate, thereby starting the air cylinder to perform reciprocating pumping and exhausting. The pumping of the air cylinder allows the exhausted gas to back-flush the filter cloth through the first support rod, thereby blowing the dust on the filter cloth off and separating it from the filter cloth, and the blown dust can be blown into the dust inlet hood, and then the air is When the cylinder is evacuating air, the dust inside the dust hood can be quickly sucked to the bottom through the connection between the cylinder part and the second support rod, and the dust can be recovered and stored. In addition, through the setting of the drive component, each time the cylinder is evacuating air, the drive component can be used to control the fixed ring to rotate an angle, so that the width of the exhaust block can be set to several equal parts of the fixed ring. The exhaust block can clean the filter cloth at one place, and the rotating fixed ring causes the filter cloth to rotate to switch the backblowing position, so that the exhaust block only blocks a small part of the filter cloth, while the other parts of the filter cloth can continue to filter. There is no need to stop the machine when backblowing the filter cloth and recovering and storing the dust, and the air purification of the workshop can continue to be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the internal structure of the main pipeline of the present invention;

[0029] Figure 3 It is a schematic diagram of the filter frame structure of the present invention;

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of the main pipeline of the present invention;

[0031] Figure 5 It is a schematic cross-sectional structural diagram of a first support rod of the present invention;

[0032] Figure 6 It is a schematic diagram of the exhaust block structure of the present invention;

[0033] Figure 7 For the present invention Figure 5 A schematic diagram of the local enlarged structure at C;

[0034] Figure 8 It is a schematic diagram of the structure of the second support rod and the dust inlet cover of the present invention;

[0035] Fig. 9is a schematic cross-sectional structural diagram of a second support rod of the present invention;

[0036] Fig.10 It is a schematic diagram of the cross-sectional structure of the cylinder of the present invention;

[0037] Fig.11 For the present invention Figure 2 A schematic diagram of the local enlarged structure at B;

[0038] Fig.12 It is a schematic diagram of the cross-sectional structure of the barrel of the present invention;

[0039] Fig.13 It is a schematic diagram of the structure of gear 1 and gear 2 of the present invention;

[0040] Fig.14 It is a schematic diagram of the structure of the fixing sleeve and the torsion spring of the present invention;

[0041] Fig.15 For the present invention Figure 2 Schematic diagram of the local enlarged structure at A.

[0042] In the figure: 1, base; 2, dust suction mechanism; 3, recovery mechanism; 4, support rod; 5, annular groove; 6, sealing rubber pad; 7, bent rod; 8, air inlet hole; 9, connecting groove; 10, exhaust block; 11, exhaust groove; 12, dust inlet cover; 13, through hole; 14, connecting groove; 15, connecting plate; 16, hose; 17, storage barrel; 18, torsion spring; 19, ratchet mechanism; 20, give way groove; 201, main pipeline; 202, air outlet pipe; 203, exhaust fan; 204, filter assembly; 241, filter frame; 242, filter cloth; 243, gear ring; 244, first support rod; 245, second support rod; 2411, fixing ring; 2412, center column; 2413, fixing strip; 2441, rod one; 2442, rod two; 301, air supply assembly; 302, drive assembly; 311, Reciprocating drive unit; 312, cylinder unit; 3111, fixed seat; 3112, turntable; 3113, drive motor; 3114, drive shaft; 3115, control handle; 3116, slide seat; 3117, slide rod; 3118, connecting shaft; 3121, cylinder; 3122, piston; 3123, pumping rod; 3124, air outlet nozzle; 3125, air inlet nozzle; 171, barrel; 172 , barrel cover; 173, filter cover; 174, air inlet pipe; 175, air outlet pipe; 321, control unit; 322, transmission unit; 3211, base; 3212, rotating shaft; 3213, fixing sleeve; 3214, passive control block; 3215, fixing column; 3216, active control block; 3221, gear one; 3222, gear two; 3223, synchronization shaft; 3224, gear three. DETAILED DESCRIPTION

[0043] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given. However, the protection scope of the present invention is not limited to the following embodiments. In the description of the present invention, words indicating directions or positional relationships such as "front", "rear", "left", and "right" are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] Example 1 discloses a dust recovery device for powder coating production, such as Figure 1-Figure 15 As shown, it includes a base 1 and a dust collecting mechanism 2 and a recovery mechanism 3 arranged above the base 1, wherein Figure 1 and Figure 2 As shown, the dust suction mechanism 2 is used to absorb and filter the dust in the air, and the recovery mechanism 3 is used to recover and store the dust filtered by the filter screen;

[0045] Specifically, Figure 1-Figure 3 As shown, the dust collection mechanism 2 includes a main duct 201, an air outlet pipe 202, an exhaust fan 203 and a filter assembly 204, wherein the main duct 201 is fixedly arranged above the base 1 through a support rod 4, and one end of the main duct 201 is an opening, and the other end of the main duct 201 is provided with an air outlet pipe 202, and the exhaust fan 203 is arranged at one end of the air outlet pipe 202. When the exhaust fan 203 is started, external air is sucked into the main duct 201 through the opening of the main duct 201, and discharged through the exhaust fan 203, and the main duct 201 is provided with a filter assembly 204, and the filter assembly 204 is located between the air outlet pipe 202 and the opening, so that when the exhaust fan 203 is running, after the external air is sucked in from the opening, the air can be filtered through the filter assembly 204 to filter the dust in the air, and the clean air after filtering is discharged through the air outlet pipe 202;

[0046] The filtered dust will be retained on the filter assembly 204. Therefore, in order to recover the dust and clean the filter assembly 204 to prevent the filter assembly 204 from being blocked after working for a long time and affecting the filtering effect, a recovery mechanism 3 is provided to recover the dust on the filter assembly 204.

[0047] When the dust on the filter assembly 204 is recovered by the recovery mechanism 3, in order to ensure that the device can continue to perform dust collection and filtering work, thereby avoiding affecting the dust recovery efficiency, the filter assembly 204 is set to be rotatable inside the main pipe 201, so that by setting the filter assembly 204 to a rotatable mode and matching the recovery mechanism 3, the dust on the filter assembly 204 can be cleaned and recovered without stopping the machine;

[0048] like Figure 2-Figure 4 As shown, the filter assembly 204 is specifically configured to include a filter frame 241, a filter cloth 242, a gear ring 243, a first support rod 244 and a second support rod 245, wherein the filter frame 241 is arranged inside the main pipe 201, and the filter frame 241 specifically includes a fixing ring 2411, a center column 2412 and a fixing bar 2413, and the fixing ring 2411 is rotatably arranged inside the main pipe 201. Specifically, an annular groove 5 is opened on the inner wall of the inner ring of the main pipe 201, and the outer ring of the fixing ring 2411 is inserted into the annular groove. 5, the two side end faces of the fixing ring 2411 are respectively fitted and slidably matched with the two sides of the annular groove 5. It should be noted that in order to ensure the sealing of the two sides of the fixing ring 2411, the two side inner walls of the annular groove 5 are respectively slidably and sealedly matched with the two side outer walls of the fixing ring 2411. More specifically, the two side inner walls of the annular groove 5 are provided with sealing pads 6, so that the fixing ring 2411 can rotate inside the main pipeline 201 through the sealing pads 6 while ensuring the sealing of the front and rear ends of the filter assembly 204;

[0049] The center column 2412 is arranged at the center of the fixed ring 2411, and the center column 2412, the fixed ring 2411 and the main pipe 201 are all concentric with each other. The outer wall of the outer ring of the center column 2412 is fixedly provided with a fixing strip 2413, and at least three fixing strips 2413 are provided. The other ends of the three fixing strips 2413 are fixedly connected to the inner wall of the inner ring of the fixed ring 2411, and the inner ring of the fixed ring 2411 is divided by the fixing strips 2413. The filter cloth 2413 is fixedly provided inside each sector groove 42, and both sides of the filter cloth 242, the central column 2412, the fixing strip 2413 and the fixing ring 2411 are all in the same vertical plane, therefore, the two ends of the main duct 201 are separated by the arrangement of the filter frame 241 and the filter cloth 242, when the exhaust fan 203 is started, the external air is sucked in through the opening of the main duct 201 and filtered through the filter cloth 242, and then the filtered air is discharged through the air outlet 202, and the dust in the air can be retained and filtered on the filter cloth 242;

[0050] In order to control the rotation of the fixing ring 2411, a gear ring 243 is fixedly arranged on the outer wall of the outer ring of the fixing ring 2411, and in order to make the rotation of the fixing ring 2411 more stable, a first support rod 244 is rotatably arranged at one end of the central column 2412 toward the air outlet pipe 202, and the other end of the first support rod 244 is fixedly connected to the bottom inner wall of the main pipe 201, and a second support rod 245 is rotatably arranged at one end of the central column 2412 toward the opening, and the other end of the second support rod 245 is fixedly connected to the bottom inner wall of the main pipe 201. Through the arrangement of the first support rod 244 and the second support rod 245, the fixing ring 2411 can rotate with one end of the first support rod 244 and the second support rod 245 as the center of the circle;

[0051] Specifically, the first support rod 244 and the second support rod 245 are both composed of a rod 1 2441 and a rod 2442, and the rod 1 2441 is arranged horizontally, and the rod 2 2442 is arranged vertically, one end of the rod 1 2441 is rotatably arranged with the central column 2412, and the other end of the rod 1 2441 is fixedly connected with the top end of the rod 2 2442 through the bent rod 7, and the bottom end of the rod 2 2442 is fixedly connected with the bottom inner wall of the main pipeline 201;

[0052] In order to separate the dust on the filter cloth 242 from the filter cloth 242 for recycling, as Figure 2-Figure 9 As shown, an air inlet 8 is provided inside the second rod 2442 of the first support rod 244, and a connecting groove 9 is also provided on one side of the second rod 2442 of the first support rod 244, and the connecting groove 9 is communicated with the air inlet 8, and the connecting groove 9 also penetrates the outer wall of one side of the second rod 2442 of the first support rod 2441, and an exhaust block 10 is fixedly connected to one side of the second rod 2442 of the first support rod 244 facing the filter cloth 242, and an exhaust groove 11 is transversely provided inside the exhaust block 10, and the exhaust groove 11 penetrates the two side end surfaces of the exhaust block 10, and the exhaust groove 11 is communicated with the connecting groove 9, so that air can be introduced into the air inlet 8, so that the airflow can be discharged to the filter cloth 242 through the connecting groove 9 and the exhaust groove 11, and the filter cloth 242 is back-blown and cleaned, so that the dust on the filter cloth 242 is separated from the filter cloth 242, and it should be noted that the width of the connecting groove 9 and the exhaust groove 11 is smaller than the diameter of the air inlet 8;

[0053] Correspondingly, when the airflow discharged from the exhaust slot 11 back-blows the filter cloth 242, the dust blown off from the other side of the filter cloth 242 will be separated from the filter cloth 242 and dispersed inside the main duct 201. In order to recover the blown dust and not to shut down the exhaust fan 203 to prevent the blown dust from being sucked onto the filter cloth 242 again, a dust inlet cover 12 is fixedly provided on the end face of one side of the second support rod 245 facing the filter cloth 242, and a through hole 13 is opened inside the second rod 2442 of the second support rod 245, and the through hole 13 passes through the bottom surface of the second rod 2442, and the through hole 13 is connected to the dust inlet cover 12 through the connecting groove 14. In addition, the dust inlet cover 12 is arranged on the symmetrical surface of the exhaust block 10, and is specifically provided with a fixing ring 241. 1 is a symmetric plane, and the opening of the dust inlet cover 12 covers the exhaust slot 11, and one end face of the dust inlet cover 12 is spaced apart from the filter cloth 242. It should be noted that the width of the exhaust block 10 is greater than the width of the dust inlet cover 12. Therefore, since the exhaust block 10 is arranged on the side of the filter cloth 242 facing the air outlet duct 202, when the exhaust fan 203 is working, the exhaust block 10 and the dust inlet cover 12 will block the filter cloth 242 between them, so that the filter cloth 242 will not have airflow. Therefore, when the exhaust slot 11 is blown, the airflow back-blows the filter cloth 242, and the back-blown dust can be directly blown into the interior of the dust inlet cover 12, so that the dust separated by the back-blowing can be recovered and stored;

[0054] In order to prevent the exhaust block 10 from blocking a larger area of ​​the filter cloth 242, the width of the exhaust block 10 is set to be a number of equal parts of the inner circle area of ​​the fixing ring 2411. Therefore, when dust recovery is performed, the fixing ring 2411 is intermittently rotated in steps so that the entire filter cloth 242 is gradually cleaned and the dust is recovered. In addition, since the filter cloth 242 is backblown through the exhaust slot 11, the airflow discharged from the exhaust slot 11 needs to be a high-pressure airflow, and when the filter cloth 242 is backblown, the backblown dust enters the dust inlet hood 12. In order to allow the dust entering the dust inlet hood 12 to sink to the bottom quickly and avoid the dust in the dust inlet hood 12 being blown away during the next backblowing, the recovery mechanism 3 is configured to include an air supply component 301 and a drive component 302, wherein the air supply component 301 is used to supply air to the first support rod 244, and the drive component 302 is used to rotate the fixing ring 2411, thereby rotating the filter cloth 242;

[0055] Specifically, Figure 2 and Fig.10As shown, the air supply assembly 301 includes a reciprocating drive portion 311 and an air cylinder portion 312, wherein the reciprocating drive portion 311 is arranged above the base 1 and below the main pipeline 201, and the air cylinder portion 312 is also arranged above the base 1 and located at one side of the reciprocating drive portion 311, and the reciprocating drive portion 311 is configured to control the piston rod of the air cylinder portion 312 to reciprocate, thereby supplying air;

[0056] More specifically, the reciprocating drive unit 311 includes a fixed seat 3111, a turntable 3112, a drive motor 3113, a drive shaft 3114, a control handle 3115, a slide seat 3116, a slide rod 3117 and a connecting shaft 3118, wherein the fixed seat 3111 is fixedly arranged above the base 1, and the turntable 3112 is rotatably arranged on one side above the fixed seat 3111 through a rotating shaft, and the drive motor 3113 is installed below the fixed seat 3111, and the output shaft of the drive motor 3113 is connected to the rotating shaft of the turntable 3112, and a drive shaft 3114 is fixedly arranged on the upper end surface of the turntable 3112 near the outer ring. Axle 3114, and a sliding seat 3116 is fixedly arranged on the other side of the upper end surface of the fixed seat 3111, a sliding rod 3117 is slidably arranged inside the sliding seat 3116, and a connecting shaft 3118 is fixedly arranged above one end of the sliding rod 3117, a control handle 3115 is rotatably sleeved on the outer wall of the connecting shaft 3118, and the other end of the control handle 3115 is rotatably sleeved on the outside of the driving shaft 3114. Through the above arrangement, through the connection between the control handle 3115, the connecting shaft 3118 and the driving shaft 3114, when the turntable 3112 rotates, the control handle 3115 can drive the sliding rod 3117 to slide back and forth laterally;

[0057] like Figure 2 , Fig.10 and Fig.11As shown, the cylinder part 312 specifically includes a cylinder body 3121, a piston 3122, a pumping rod 3123, an air outlet nozzle 3124 and an air inlet nozzle 3125, wherein the cylinder body 3121 is fixedly arranged at the front end of the fixing seat 3111, the piston 3122 is slidably arranged inside the cylinder body 3121, and a pumping rod 3123 is fixedly arranged on one side of the piston 3122, and the other end of the pumping rod 3123 extends to the outside of the cylinder body 3121, and one end of the pumping rod 3123 located outside the cylinder body 3121 is fixedly connected to one end of the sliding rod 3117 through the connecting plate 15. Therefore, when the driving motor 3113 is started, the turntable 3112 rotates, the reciprocating motion of the sliding rod 3117 can drive the pumping rod 3123 to reciprocate, and the reciprocating motion of the pumping rod 3123 can drive the piston 3122 to move in the cylinder body 3121 The inner reciprocating motion of the cylinder 3121 is used to pump air and inflate air. It should be noted that the inner diameter of the cylinder 3121 is larger than the inner diameter of the air inlet hole 8, so that the piston 3122 can generate high-pressure gas when it moves, and the filter cloth 242 is back-blown by this high-pressure gas. An air inlet nozzle 3125 and an air outlet nozzle 3124 are fixedly provided at one end of the cylinder 3121, and the air inlet nozzle 3125 and the air outlet nozzle 3124 are both set to unidirectional flow. The flow direction of the air inlet nozzle 3125 is specifically to take in air from the outside to the inside of the cylinder 3121, and the air outlet nozzle 3124 is specifically to exhaust air from the inside to the outside. Therefore, when the piston 3122 reciprocates, when the cylinder is pumping air, the air inlet nozzle 3125 takes in air and the air outlet nozzle 3124 is closed, and when the cylinder is exhausting air, the air outlet nozzle 3124 exhausts air and the air inlet nozzle 3125 is closed.

[0058] Therefore, if Figure 2 , Figure 3 , Fig.10 and Fig.11 As shown, the air outlet nozzle 3124 is connected to the air inlet hole 8 of the first support rod 244 and the second rod 2442 through the hose 16. Specifically, the hose 16 is connected to the opening at the bottom of the air inlet hole 8 of the second rod 2442, and the air inlet nozzle 3125 is connected to the through hole 13 of the second support rod 245 and the second rod 2442 through the hose 16. Specifically, the hose 16 is connected to the opening at the bottom of the internal through hole 13 of the second rod 2442, so that when the piston 3122 moves to exhaust, the exhausted high-pressure gas can enter the interior of the air inlet hole 8 through the hose 16, and is backblown toward the filter cloth 242 by the connecting groove 9 and the exhaust groove 11, and the dust on the filter cloth 242 is backblown and separated from the filter cloth 242 and blown to the interior of the dust inlet cover 12, and when the piston 3122 moves to exhaust, the dust inside the dust inlet cover 12 can be sucked downward, so that the dust inside the dust inlet cover 12 can sink to the bottom quickly;

[0059] In addition, if Figure 3 and Fig.12As shown, a storage barrel 17 is arranged above the base 1, and the storage barrel 17 specifically includes a barrel body 171, a barrel cover 172, a filter cover 173, an air inlet pipe 174 and an air outlet pipe 175, wherein the barrel body 171 is fixedly arranged above the base 1, and the barrel cover 172 is detachably installed above the barrel body 171, and the filter cover 173 is detachably arranged below the barrel cover 172, and an air inlet pipe 174 is fixedly arranged at the center of the barrel cover 172, and the air inlet pipe 174 is communicated with the filter cover 173, and an air outlet pipe 175 is fixedly arranged on one side of the outer wall of the bottom of the barrel body 171, and the air outlet pipe 175 is located outside the filter cover 173, and The air outlet pipe 175 is communicated with the inside of the barrel body 171, and the air inlet nozzle 3125 of the air cylinder is communicated with the air outlet pipe 175 through the hose 16. The air inlet pipe 174 is connected to the bottom of the second rod 2442 of the second support rod 245 through the hose 16 and is communicated with the through hole 13. Therefore, when the piston 3122 moves to extract air, the dust inside the dust inlet cover 12 can be sucked downward through the hose 16, so that the dust inside the dust inlet cover 12 can quickly sink to the bottom of the filter cover 173. After that, the staff can remove the barrel cover 172 and the filter cover 173 after cleaning the filter cloth 242, so as to take out the dust recovered inside;

[0060] In order to make the rotation of the fixed ring 2411 match the exhaust of the exhaust groove 11, that is, when the air cylinder is exhausted, the fixed ring 2411 stops rotating, so that the static filter cloth 242 can be back-blown. After the back-blowing is completed, when the air cylinder is evacuated and the dust inside the dust cover 12 is settled to the bottom, the fixed ring 2411 rotates to back-blow the next filter cloth 242. Figure 1 , Figure 2 , Fig.13 , Fig.14 and Fig.15 As shown, the driving assembly 302 is configured to include a control part 321 and a transmission part 322, wherein the control part 321 is configured to rotate the transmission part 322 slightly by moving the pumping rod 3123, and the gear ring 243 is rotated by the transmission part 322;

[0061] Specifically, the control unit 321 includes a base 3211, a rotating shaft 3212, a fixed sleeve 3213, a passive control block 3214, a fixed column 3215 and an active control block 3216, wherein the base 3211 is fixedly arranged above the base 1, and a rotating shaft 3212 is rotatably arranged on one side of the base 3211, the outer fixed sleeve of the rotating shaft 3212 is connected with the fixed sleeve 3213, and a plurality of passive control blocks 3214 are arranged in a circular array on the outer wall of the fixed sleeve 3213, and one end of the passive control blocks 3214 is provided with a beveled edge, in addition, the rotating shaft 3212, the fixed sleeve 3213 and the pumping rod 3123 are all coaxially arranged, and a fixed column 3215 is arranged at one end of the pumping rod 3123, and the fixed column 3215 is fixedly connected to the connecting plate 15, and the fixed column 3215 is coaxially arranged with the pumping rod 3123, and the fixed A plurality of active control blocks 3216 are arranged in a circular array at one end of the column 3215, and the active control blocks 3216 and the passive control blocks 3214 are arranged opposite to each other, and the number of the active control blocks 3216 is the same as that of the passive control blocks 3214. In addition, one end of the active control block 3216 facing the passive control block 3214 is also arranged as a hypotenuse, and the hypotenuses at one end of the active control block 3216 and the passive control block 3214 are configured such that when the active control block 3216 moves toward the passive control block 3214 along with the draw rod 3123, the hypotenuse at one end of the active control block 3216 contacts the hypotenuse at one end of the passive control block 3214, and as the active control block 3216 continues to move laterally, the passive control block 3214 is pushed to perform a circular displacement, so that the fixed sleeve 3213 and the rotating shaft 3212 are rotated slightly;

[0062] In addition, the passive control block 3214 is arranged on one side of the connecting plate 15 in the direction of movement of the pumping rod 3123 when the air is pumped. In other words, only when the air cylinder 312 is pumped, the pumping rod 3123 will move toward the passive control block 3214, and the active control block 3216 and the passive control block 3214 cooperate to make the rotating shaft 3212 rotate.

[0063] The transmission part 322 includes a gear 1 3221, a gear 2 3222, a synchronous shaft 3223 and a gear 3 3224, wherein the gear 1 3221 is sleeved on the outside of the fixed sleeve 3213, so that when the fixed sleeve 3213 rotates, the gear 1 3221 rotates synchronously, and the upper part of the gear 1 3221 is meshedly connected with the gear 2 3222. In addition, a clearance groove 20 is opened at a place on the outer wall of the bottom of the main pipeline 201, and the gear 3 3224 is arranged inside the clearance groove 20 through the synchronous shaft 3223. 24, and the gear three 3224 is meshedly connected with the gear ring 243, and one end of the synchronous shaft 3223 extends to one end of the main pipe 201, and the gear two 3222 is fixedly sleeved on the outside of the synchronous shaft 3223, so that when the fixed sleeve 3213 rotates, the gear one 3221 drives the gear two 3222 to rotate, the gear two 3222 drives the gear three 3224 to rotate, and the gear three 3224 drives the gear ring 243 to rotate, so that the filter cloth 242 rotates;

[0064] Since the rotation of the fixed sleeve 3213 is controlled by the lateral movement of the pumping rod 3123, in order to make the pumping rod 3123 move toward the passive control block 3214 once, the fixed ring 2411 rotates an angle. In other words, the filter cloth 242 rotates an angle when the air cylinder 312 is evacuated once. A torsion spring 18 is provided between the fixed sleeve 3213 and the base 3211, so that after the passive control block 3214 moves to contact the active control block 3216 and the fixed sleeve 3213 rotates an angle, the pumping rod 3123 moves in the opposite direction to exhaust air. When the fixed sleeve 3213 is in the state of being rotated backward, the passive control block 3214 is separated from the active control block 3216, and the fixing sleeve 3213 is caused to reset and rotate in the reverse direction through the torsion spring 18. In addition, a ratchet mechanism 19 is provided between the fixing sleeve 3213 and the gear 1 3221 for connection, so that when the fixing sleeve 3213 rotates in the reverse direction, the gear 1 3221 will not rotate in the reverse direction, thereby preventing the fixing ring 2411 from rotating in the reverse direction. When air is pumped out next time, the fixing sleeve 3213 continues to rotate by an angle, and drives the gear 1 3221 to rotate by an angle, thereby causing the filter cloth 242 to rotate by an angle.

[0065] A recycling process of a dust recovery device for powder coating production, comprising the following steps:

[0066] Step 1: First, turn on the exhaust fan 203. The exhaust fan 203 starts, takes in air through the opening of the main pipeline 201, and is filtered by the filter cloth 242 on the fixed ring 2411. The filtered air is discharged through the air outlet pipe 202, and the dust in the air is filtered and retained on the filter cloth 242;

[0067] Step 2: When a lot of dust accumulates on the filter cloth 242 and affects the filtering efficiency of the filter cloth 242, the filter cloth 242 is cleaned and the dust is recovered;

[0068] Step 3: Turn on the driving motor 3113. First, the driving motor 3113 drives the rotating disk 3112 to rotate, and the control handle 3115 causes the sliding rod 3117 to reciprocate. When the sliding rod 3117 moves toward the opening direction of the main pipeline 201, the sliding rod 3117 drives the pumping rod 3123 to move, and the movement of the pumping rod 3123 drives the piston 3122 to move, so that the air cylinder is exhausted, and the air outlet nozzle 3124 will discharge the exhausted gas to the air inlet 8 through the hose 16, and then discharge it to the filter cloth 242 through the connecting groove 9 and the exhaust groove 11, and the filter cloth 242 is backblown, and the dust blown back will be blown into the dust inlet cover 12;

[0069] Step 4: The turntable 3112 continues to rotate, so that the slide bar 3117 moves toward the air outlet pipe 202, and the pumping rod 3123 moves to drive the piston 3122 to move, so that the air cylinder is pumped. When the air cylinder is pumped, the dust inside the dust inlet cover 12 is sucked downward through the air inlet nozzle 3125 and the hose 16, so that the dust inside the dust inlet cover 12 can quickly sink to the bottom of the filter cover 173;

[0070] Step 5: When the slide bar 3117 continues to move toward the air outlet duct 202 and makes the passive control block 3214 on one side of the connecting plate 15 contact the active control block 3216, the passive control block 3214 will make the fixing sleeve 3213 rotate by an angle, and the fixing sleeve 3213 will drive the gear 1 3221 to rotate by an angle, and the gear 1 3221 will drive the gear 2 3222 to rotate by an angle, and then the gear 2 3222 will drive the gear 3 3224 to rotate, and the gear 3 3224 will drive the gear ring 243 to rotate, so that the fixing ring 2411 rotates by an angle, so that the filter cloth 242 rotates relative to the exhaust block 10, and the filter cloth 242 at other positions is backblown;

[0071] Step six: When the slide bar 3117 continues to reciprocate and move toward the opening direction of the main pipeline 201, the active control block 3216 will gradually separate from the passive control block 3214. After that, without the control of the passive control block 3214, the fixed sleeve 3213 is reset and rotated by the action of the torsion spring 18. Due to the setting of the ratchet mechanism 19, the fixed sleeve 3213 is reset and rotated, that is, the fixed sleeve 3213 drives the passive control block 3214 to reset and rotate, but the gear 1 3221 will not rotate, so that the passive control block 3214 is reset to prepare for the next cooperation with the active control block 3216.

[0072] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A dust recovery device for powder coating production, comprising a base (1) and a dust suction mechanism (2) and a recovery mechanism (3) arranged above the base (1), characterized in that: The dust collection mechanism (2) comprises a main pipeline (201), an air outlet pipe (202), an exhaust fan (203) and a filter assembly (204); the main pipeline (201) is arranged above the base (1), and one end of the main pipeline (201) is an opening; the other end of the main pipeline (201) is provided with an air outlet pipe (202); the exhaust fan (203) is arranged at one end of the air outlet pipe (202); a filter assembly (204) is arranged inside the main pipeline (201), and the filter assembly (204) is located between the air outlet pipe (202) and the opening; The filter assembly (204) is rotatably disposed inside the main pipeline (201); The filter assembly (204) comprises a filter frame (241), a filter cloth (242), a gear ring (243), a first support rod (244) and a second support rod (245); the filter frame (241) is rotatably arranged inside the main pipe (201); the filter cloth (242) is arranged on the filter frame (241); the first support rod (244) is rotatably arranged on a side of the center of the filter frame (241) facing the air outlet pipe (202); the other end of the first support rod (244) is fixedly connected to the bottom inner wall of the main pipe (201); the center of the filter frame (241) is rotatably arranged on a side of the opening of the main pipe (201); A second support rod (245) is arranged, and the other end of the second support rod (245) is fixedly connected to the inner wall of the bottom of the main pipe (201); the first support rod (244) is connected to an exhaust block (10) in the direction of the filter frame (241); a gear ring (243) is fixedly sleeved on the outer ring of the filter frame (241); the filter frame (241) comprises a fixing ring (2411), a center column (2412) and a fixing strip (2413); the center column (2412) is arranged at the center of the fixing ring (2411); and the center column (2412), the fixing ring (2411) and the main pipe (201) are all concentric with each other; The recovery mechanism (3) comprises an air supply assembly (301) and a drive assembly (302), wherein the air supply assembly (301) is used to supply air to the first support rod (244), and the drive assembly (302) is used to rotate the filter assembly (204), wherein the first support rod (244) and the second support rod (245) both comprise a rod 1 (2441) and a rod 2 (2442), wherein the rod 1 (2441) is arranged horizontally, and the rod 2 (2442) is arranged vertically, and one end of the rod 1 (2441) is rotatably arranged with the central column (2412), and the other end of the rod 1 (2441) is fixedly connected to the top end of the rod 2 (2442) via a bent rod (7), and the bottom end of the rod 2 (2442) is fixedly connected to the bottom inner wall of the main pipeline (201); An air inlet hole (8) is provided inside the second rod (2442) of the first support rod (244), a connecting groove (9) is provided inside one side of the second rod (2442) of the first support rod (244), and the connecting groove (9) is communicated with the air inlet hole (8), and the connecting groove (9) also penetrates the outer wall of one side of the second rod (2442) of the first support rod (2441), an exhaust groove (11) is transversely provided inside the exhaust block (10), and the exhaust groove (11) penetrates the end surfaces of both sides of the exhaust block (10), and the exhaust groove (11) is communicated with the connecting groove (9), and the second support rod ( A dust inlet cover (12) is fixedly arranged on one end face of the exhaust block (10) facing the filter cloth (242); a through hole (13) is provided inside the second rod (2442) of the second support rod (245), and the through hole (13) passes through the bottom surface of the second rod (2442); the through hole (13) is connected to the dust inlet cover (12) via a connecting groove (14); the dust inlet cover (12) is arranged on a symmetrical surface of the exhaust block (10); the opening of the dust inlet cover (12) covers the exhaust groove (11); and the width of the exhaust block (10) is set to be a plurality of equal parts of the inner circle area of ​​the fixing ring (2411); The air supply assembly (301) comprises a reciprocating drive unit (311) and an air cylinder unit (312). The reciprocating drive unit (311) is arranged above the base (1) and below the main pipeline (201). The air cylinder unit (312) is also arranged above the base (1). The reciprocating drive unit (311) comprises a fixed seat (3111), a rotating disk (3112), a driving motor (3113), a driving shaft (3114), a control handle (3115), a sliding seat (3116), a sliding rod (3117) and a connecting shaft (3118). The air cylinder unit (312) comprises a cylinder body (3121), a piston (3122), a pumping rod (3123), an air outlet nozzle (3124) and an air inlet nozzle (3125). The cylinder body (3121) and the fixed seat (3111) are connected to each other. 111), a piston (3122) is slidably provided inside the cylinder (3121), a pumping rod (3123) is fixedly provided on one side of the piston (3122), and the other end of the pumping rod (3123) extends to the outside of the cylinder (3121), one end of the pumping rod (3123) located outside the cylinder (3121) is fixedly connected to one end of the sliding rod (3117) through a connecting plate (15), an air inlet nozzle (3125) and an air outlet nozzle (3124) are fixedly provided on one end of the cylinder (3121), and the air inlet nozzle (3125) and the air outlet nozzle (3124) are both configured to have a unidirectional flow direction, and the reciprocating drive unit (311) controls the pumping rod (3123) through the sliding rod (3117) to control the cylinder unit (312) to perform reciprocating inflating and exhausting; The driving assembly (302) comprises a control unit (321) and a transmission unit (322); the control unit (321) comprises a base (3211), a rotating shaft (3212), a fixing sleeve (3213), a passive control block (3214), a fixing column (3215), and an active control block (3216); the base (3211) is fixedly arranged above the base (1); a rotating shaft (3212) is rotatably arranged on one side of the base (3211); and the rotating shaft (3212) is arranged on the base (3211). 12) is connected to an external fixed sleeve with a fixed sleeve (3213), an outer wall of the fixed sleeve (3213) is provided with a passive control block (3214) in an annular array, and a plurality of passive control blocks (3214) are provided, one end of the passive control block (3214) is provided with a bevel, the rotating shaft (3212), the fixed sleeve (3213) and the draw rod (3123) are all coaxially arranged, one end of the draw rod (3123) is provided with a fixed column (3215), and the fixed column (3215) The fixing column (3215) is fixedly connected to the connecting plate (15), the fixing column (3215) is coaxially arranged with the draw rod (3123), an active control block (3216) is arranged in a circular array at one end of the fixing column (3215), and a plurality of active control blocks (3216) are arranged, the active control blocks (3216) and the passive control blocks (3214) are arranged facing each other, the number of the active control blocks (3216) is the same as that of the passive control blocks (3214), and the active control blocks (3216) are arranged towards the passive control blocks (3214). One end of the active control block (3214) is also arranged as a bevel, and the bevels at one end of the active control block (3216) and the passive control block (3214) are arranged such that when the active control block (3216) moves in the direction of the passive control block (3214), the bevel at one end of the active control block (3216) contacts the bevel at one end of the passive control block (3214), and the continued lateral movement of the active control block (3216) pushes the passive control block (3214) to perform an annular displacement; The transmission part (322) comprises a gear 1 (3221), a gear 2 (3222), a synchronizing shaft (3223) and a gear 3 (3224); the gear 1 (3221) is sleeved on the outside of the fixing sleeve (3213); the gear 2 (3222) is meshingly connected to the top of the gear 1 (3221); a clearance groove (20) is provided at a location on the outer wall of the bottom of the main pipe (201); the interior of the clearance groove (20) is provided with a synchronizing shaft (3223) that is rotatably arranged to rotate the synchronizing shaft (3223). Gear three (3224), and gear three (3224) is meshedly connected with the gear ring (243), one end of the synchronization shaft (3223) extends to one end of the main pipe (201), and gear two (3222) is fixedly sleeved on the outside of the synchronization shaft (3223), a torsion spring (18) is provided between the fixed sleeve (3213) and the base (3211), and a ratchet mechanism (19) is provided between the fixed sleeve (3213) and gear one (3221) for connection; The air outlet nozzle (3124) is connected to the air inlet hole (8) of the second rod (2442) of the first support rod (244) via a hose (16), and the air inlet nozzle (3125) is connected to the through hole (13) of the second rod (2442) of the second support rod (245) via a hose (16).

2. A dust recovery device for powder coating production as claimed in claim 1, characterized in that: An annular groove (5) is provided on the inner wall of the inner ring of the main pipe (201); the outer ring of the fixing ring (2411) is inserted into the annular groove (5); the inner walls on both sides of the annular groove (5) are respectively slidably sealed with the outer walls on both sides of the fixing ring (2411); a fixing strip (2413) is fixedly provided on the outer wall of the outer ring of the center column (2412); and at least three fixing strips (2413) are provided; the other ends of the three fixing strips (2413) are fixedly connected to the inner wall of the inner ring of the fixing ring (2411); the filter cloth (242) is provided on the inner ring of the fixing ring (2411); and the gear ring (243) is fixedly sleeved on the outer ring of the fixing ring (2411).

3. A dust recovery device for powder coating production as claimed in claim 2, characterized in that: The fixed seat (3111) is fixedly arranged above the base (1); the turntable (3112) is rotatably arranged above the fixed seat (3111); the turntable (3112) is driven to rotate by a driving motor (3113); a driving shaft (3114) is fixedly arranged on the upper end surface of the turntable (3112) near the outer ring; a sliding seat (3116) is fixedly arranged on the other side of the upper end surface of the fixed seat (3111); a sliding rod (3117) is slidably arranged inside the sliding seat (3116); a connecting shaft (3118) is fixedly arranged above one end of the sliding rod (3117); a control handle (3115) is rotatably sleeved on the outer wall of the connecting shaft (3118); and the other end of the control handle (3115) is rotatably sleeved on the outside of the driving shaft (3114).

4. A dust recovery device for powder coating production as claimed in claim 3, characterized in that: A storage barrel (17) is arranged above the base (1), and the storage barrel (17) comprises a barrel body (171), a barrel cover (172), a filter cover (173), an air inlet pipe (174), and an air outlet pipe (175), wherein the barrel body (171) is fixedly arranged above the base (1), the barrel cover (172) is detachably mounted above the barrel body (171), the filter cover (173) is detachably arranged below the barrel cover (172), an air inlet pipe (174) is fixedly arranged at the center of the barrel cover (172), and the air inlet pipe (174) is arranged at the center of the barrel cover (172). The tube (174) is in communication with the filter cover (173); an air outlet pipe (175) is fixedly provided on one side of the outer wall at the bottom of the barrel body (171), and the air outlet pipe (175) is located outside the filter cover (173); the air outlet pipe (175) is in communication with the interior of the barrel body (171); the air inlet nozzle (3125) of the air cylinder part (312) is in communication with the air outlet pipe (175) via a hose (16); and the air inlet pipe (174) is in communication with a through hole (13) of the second rod (2442) of the second support rod (245) via the hose (16).

5. A recycling process of a dust recovery device for powder coating production according to claim 4, characterized in that: The following steps are involved: Step 1: First, the exhaust fan (203) is turned on to filter the air. The exhaust fan (203) is turned on, air is taken in through the opening of the main duct (201), and is filtered through the filter cloth (242) on the fixed ring (2411). The filtered air is discharged through the air outlet pipe (202), and dust in the air is filtered and retained on the filter cloth (242); Step 2: When a large amount of dust accumulates on the filter cloth (242), affecting the filtering efficiency of the filter cloth (242), the filter cloth (242) is cleaned and the dust is recovered; Step 3: Turn on the drive motor (3113), the drive motor (3113) drives the turntable (3112) to rotate, and the control handle (3115) causes the slide bar (3117) to reciprocate. When the slide bar (3117) moves toward the opening direction of the main pipeline (201), the slide bar (3117) drives the pumping rod (3123) to move, and the movement of the pumping rod (3123) drives the piston (3122) to move, so that the cylinder part (312) is exhausted, and the air outlet nozzle (3124) discharges the exhausted gas to the air inlet hole (8) through the hose (16), and then discharges the exhausted gas to the filter cloth (242) through the connecting groove (9) and the exhaust groove (11), and the filter cloth (242) is backblown, and the dust blown back is blown into the inside of the dust inlet cover (12); Step 4: The turntable (3112) then continues to rotate, so that when the slide bar (3117) moves toward the air outlet pipe (202), the pumping rod (3123) moves to drive the piston (3122) to move, so that the cylinder part (312) draws air. When the cylinder part (312) draws air, the dust inside the dust inlet cover (12) is sucked downward through the air inlet nozzle (3125) and the hose (16), so that the dust inside the dust inlet cover (12) quickly sinks to the bottom of the filter cover (173). Step 5: When the sliding rod (3117) continues to move toward the air outlet pipe (202) and makes the passive control block (3214) on one side of the connecting plate (15) contact the active control block (3216), the passive control block (3214) causes the fixing sleeve (3213) to rotate by an angle, and the fixing sleeve (3213) drives the gear 1 (3221) to rotate by an angle, and the gear 1 (3221) drives the gear 2 (3222) to rotate by an angle, and then the gear 2 (3222) drives the gear 3 (3224) to rotate, and the gear 3 (3224) drives the gear ring (243) to rotate, thereby causing the fixing ring (2411) to rotate by an angle, so that the filter cloth (242) is rotated relative to the exhaust block (10), and the filter cloth (242) at other positions is backblown; Step 6: When the slide bar (3117) continues to reciprocate toward the opening direction of the main pipe (201), the active control block (3216) will gradually separate from the passive control block (3214). After that, without the control of the passive control block (3214), the fixing sleeve (3213) is reset and rotated by the action of the torsion spring (18). Due to the setting of the ratchet mechanism (19), the fixing sleeve (3213) is reset and rotated, that is, the fixing sleeve (3213) drives the passive control block (3214) to reset and rotate, but the gear 1 (3221) does not rotate, so that the passive control block (3214) is reset to prepare for the next cooperation with the active control block (3216).

Images