A multi-stage composite dust collection device

Abstract

The application discloses a multistage composite dust collecting device, relates to the technical field of dust collecting, and comprises a dust collecting cylinder, a dust collecting hopper is arranged on the lower side of the dust collecting cylinder, a dust discharging pipe is fixedly connected to the lower side of the dust collecting hopper, a guide plate one is fixedly connected to the inner wall of the dust collecting cylinder, a lifting block is slidably connected to the outer side of the guide plate one, a lifting ring is fixedly connected to the outer side of the lifting block, and a filter bag one is arranged on the lower side of the lifting ring. The multistage composite dust collecting device is provided with the filter bag one and the filter bag two, can perform multistage filtration on air, and is provided with a moving ring, a moving rod, a top disc, a nozzle and a gas pump which are matched with each other, the gas pump provides pulse airflow, the moving ring drives the nozzle to move up and down, the calcium oxide powder on the surfaces of the two filter bags is uniformly cleaned, the nozzle repeatedly swings in the cleaning process through the linkage of a swing block, a rotating shaft, a control panel one, a control panel two and an elastic rope, the spraying range is expanded, and the cleaning efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the dust collection technical field, specifically a multi-stage composite dust collection device. BACKGROUND

[0002] In the production process of powdered calcium oxide (CaO), the application of dust collection equipment is crucial. A large amount of fine dust particles are generated during the production process of calcium oxide (such as limestone calcination, crushing, grinding, conveying, etc.). During the production of powdered calcium oxide, calcium oxide powder may be dispersed in the air, and dust collection equipment is needed to recover the calcium oxide powder, improve the product collection rate, and reduce production costs.

[0003] After searching, the patent with the application number "CN202120535099.0" is a multi-stage filtering device for a kiln tail large cloth bag dust collector, which includes a dust collection box, a partition plate is fixedly connected between the inner side walls of the dust collection box, a plurality of first vertical support rods are fixedly connected to the bottom surface of the partition plate, an inclined support rod is rotatably connected to the bottom of the first vertical support rod, a connecting rod is rotatably connected to the middle of the inclined support rod, an electric motor is fixedly connected to the upper surface of the partition plate, a screw rod is fixedly connected to the output end of the electric motor, a moving block is threadedly connected to the outer surface of the screw rod, the moving block is rotatably connected to the connecting rod, a first filter bag is arranged on the outer side of the first vertical support rod, and a second filter bag is arranged inside the first filter bag.

[0004] In the above-mentioned patent, the first filter bag and the second filter bag are used to perform multi-stage filtration on air, and after filtration, pulse air flow is sprayed from the first and second air distribution pipes above to clean the calcium oxide powder on the surface of the filter bag, so as to facilitate the collection of calcium oxide powder. However, the spraying range of the air distribution pipes above is limited, which causes the calcium oxide powder on the surface of some filter bags to be unable to be fully cleaned, resulting in uneven cleaning, and thus affecting the subsequent collection efficiency of calcium oxide powder. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a multi-stage composite dust collection device, which solves the problem of uneven cleaning of calcium oxide powder on the surface of the filter bag, which is not conducive to the subsequent collection of calcium oxide powder.

[0006] To achieve the above purpose, the present application is realized by the following technical solutions:

[0007] A multi-stage composite dust collection device includes a dust collection cylinder, a dust collection hopper disposed on the lower side of the dust collection cylinder, a dust discharge pipe fixedly connected to the lower side of the dust collection hopper, a guide plate fixedly connected to the inner wall of the dust collection cylinder, a lifting block slidably connected to the outer side of the guide plate, a lifting ring fixedly connected to the outer side of the lifting block, a filter bag disposed on the lower side of the lifting ring, a filter bag disposed on the lower side of the lifting ring and inside the filter bag, a smoke inlet pipe fixedly connected to the left side of the dust collection cylinder, a smoke outlet pipe fixedly connected to the right side of the dust collection cylinder, and a processing unit disposed on the inner side of the dust collection cylinder. The processing unit includes a moving ring disposed between the filter bag and the filter bag, and a cleaning component disposed on the outer side of the moving ring. The cleaning component uniformly cleans the calcium oxide powder on the surface of the filter bag and the filter bag.

[0008] Preferably, a moving rod is fixedly connected to the upper side of the moving ring, the upper end of the moving rod passes through the upper side of the dust collection cylinder and is fixedly connected to a top plate, an electric push rod is fixedly connected between the top plate and the dust collection cylinder, the cleaning assembly includes a nozzle, multiple branch blocks are fixedly connected to the lower side of the moving ring, a rotating shaft is rotatably connected to the outer side of each of the multiple branch blocks, and a swing block is fixedly connected to the outer side of each of the multiple rotating shafts, the nozzles are arranged in pairs on the side of the swing block near the first filter bag and the second filter bag, respectively corresponding to the outer side of the first filter bag and the inner side of the second filter bag, and distributed along the height direction of the first filter bag and the second filter bag.

[0009] Preferably, a control plate 1 is fixedly connected to the outer ends of both rotating shafts. A control plate 2 is rotatably connected to the outer side of the control plate 1. A rotating block 1 is rotatably connected to the outer side of the control plate 2. A control block is fixedly connected to the upper side of the rotating block 1. A rotating block 3 is fixedly connected to the upper side of the control block. An inclined plate is rotatably connected to the outer side of the rotating block 3. A guide plate 2 is fixedly connected to the lower side of the moving ring. A guide block is slidably connected to the outer side of the guide plate 2. A rotating block 2 is fixedly connected to the lower side of the guide block. The inclined plate is rotatably connected to the rotating block 2. A fixing block is fixedly connected to the lower side of the moving ring. A rotating rod is rotatably connected to the outer side of the fixing block. A take-up roller is fixedly connected to the outer side of the rotating rod. An elastic rope is wound around the outer side of the take-up roller. The elastic rope is fixedly connected to the lifting ring. A control plate 3 is fixedly connected to the outer end of the rotating rod. A reciprocating plate is rotatably connected to the outer side of the control plate 3. The reciprocating plate is rotatably connected to the guide block.

[0010] Preferably, the upper side of the moving ring has multiple rectangular holes, the upper side of the elastic rope passes through the rectangular holes to the upper side of the moving ring, a connecting hose is fixedly connected between the two nozzles, a branch pipe is fixedly connected to the upper side of the connecting hose, an annular pipe is fixedly connected to the upper end of the branch pipe, a support block is fixedly connected to the outer side of the dust collection cylinder, an air pump is fixedly connected to the upper side of the support block, a delivery hose is fixedly connected between the air pump and the annular pipe, and a limit rod is fixedly connected to the lower side of the moving ring, the limit rod is slidably connected to the control block.

[0011] Preferably, a vibration assembly is provided on the upper side of the dust collection cylinder. The vibration assembly includes a control rod, which is fixedly connected to the upper side of the lifting ring. The upper end of the control rod passes through the upper side of the dust collection cylinder and is fixedly connected to a reciprocating block. A contact block is fixedly connected to the lower side of the reciprocating block. A top block is fixedly connected to the upper side of the dust collection cylinder. A control shaft is rotatably connected to the outer side of the top block. A cam is fixedly connected to the outer side of the control shaft. A gear is fixedly connected to the outer end of the control shaft. A mounting plate is fixedly connected to the outer side of the top plate. A toothed plate that meshes with the gear is fixedly connected to the lower side of the mounting plate.

[0012] Preferably, a spring is fixedly connected between the reciprocating block and the dust collection cylinder, the control rod is slidably connected to the dust collection cylinder, a top cover is fixedly connected to the upper side of the dust collection cylinder, a valve is provided on the outer side of the dust discharge pipe, a bottom hole is opened on the lower side of the first filter bag, and a storage groove is opened on the upper side of the dust collection cylinder.

[0013] This invention provides a multi-stage composite dust collection device. Compared with the prior art, it has the following advantages:

[0014] (1) This multi-stage composite dust collection device can filter air in multiple stages by setting filter bag one and filter bag two. Through the cooperation of moving ring, moving rod, top plate, nozzle and air pump, the air pump provides pulse airflow and the moving ring drives the nozzle to move up and down, so that the calcium oxide powder on the surface of the two filter bags is evenly cleaned. At the same time, through the linkage of swing block, rotating shaft, control plate one, control plate two and elastic rope, the nozzle swings repeatedly during the cleaning process, expands the spray range and improves the cleaning efficiency.

[0015] (2) The multi-stage composite dust collection device, by setting up a lifting ring, control rod, reciprocating block, spring, contact block, cam and toothed plate, can drive the first filter bag and the second filter bag to vibrate while the nozzle cleans the calcium oxide powder, so that the attached calcium oxide powder is loosened and falls off, improving the cleaning effect and facilitating subsequent dust collection. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2This is a cross-sectional perspective view of the present invention;

[0018] Figure 3 This is a partial cross-sectional perspective view of the present invention;

[0019] Figure 4 This is a three-dimensional structural diagram of the cleaning component in this invention;

[0020] Figure 5 This is a partial three-dimensional structural diagram of the cleaning component in this invention;

[0021] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0022] Figure 7 This is a partial cross-sectional perspective view of the three-dimensional structure of the present invention from another viewpoint;

[0023] Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0024] In the diagram: 1. Dust collection cylinder; 2. Top cover; 3. Smoke inlet pipe; 4. Smoke outlet pipe; 5. Dust collection hopper; 6. Dust discharge pipe; 7. Processing unit; 8. Guide plate one; 9. Lifting block; 10. Lifting ring; 11. Filter bag one; 12. Filter bag two; 13. Air pump; 14. Conveying hose; 15. Bottom hole; 16. Support block; 71. Moving ring; 72. Moving rod; 73. Top plate; 74. Electric push rod; 75. Cleaning assembly; 76. Vibration assembly; 751. Annular pipe; 752. Branch pipe; 754. Rectangular hole; 755. Connecting hose; 756. Branch block; 757. Rotating shaft; 758. Swing block; 759. Nozzle; 7510. Control. Plate 1; 7511, Control Plate 2; 7512, Rotating Block 1; 7513, Control Block; 7514, Limit Rod; 7516, Guide Plate 2; 7517, Guide Block; 7518, Rotating Block 2; 7519, Inclined Plate; 7520, Rotating Block 3; 7521, Fixed Block; 7522, Rotating Rod; 7523, Take-up Roller; 7524, Elastic Rope; 7525, Control Plate 3; 7526, Reciprocating Plate; 761, Control Rod; 762, Reciprocating Block; 763, Spring; 764, Contact Block; 765, Top Block; 766, Storage Tank; 767, Control Shaft; 768, Cam; 769, Gear; 7610, Gear Plate; 7611, Mounting Plate. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] This invention provides the following technical solutions:

[0027] Example 1

[0028] Please see Figure 1 - Figure 6 A multi-stage composite dust collection device includes a dust collection cylinder 1, a dust collection hopper 5 disposed on the lower side of the dust collection cylinder 1, a dust discharge pipe 6 fixedly connected to the lower side of the dust collection hopper 5, a guide plate 8 fixedly connected to the inner wall of the dust collection cylinder 1, a lifting block 9 slidably connected to the outer side of the guide plate 8, a lifting ring 10 fixedly connected to the outer side of the lifting block 9, a filter bag 11 disposed on the lower side of the lifting ring 10, a filter bag 12 disposed on the lower side of the lifting ring 10 and inside the filter bag 11, a smoke inlet pipe 3 fixedly connected to the left side of the dust collection cylinder 1, a smoke outlet pipe 4 fixedly connected to the right side of the dust collection cylinder 1, and a processing unit 7 disposed inside the dust collection cylinder 1. The processing unit 7 includes a moving ring 71 disposed on the filter bag. Between filter bag 11 and filter bag 212, a cleaning component 75 is provided on the outside of the moving ring 71. The cleaning component 75 cleans the calcium oxide powder on the surface of filter bag 11 and filter bag 212 evenly. The control rod 761 is slidably connected to the dust collection cylinder 1. The top cover 2 is fixedly connected to the upper side of the dust collection cylinder 1. A valve is provided on the outside of the dust discharge pipe 6. When collecting dust from the air, the air is first introduced into the dust collection cylinder 1 through the smoke inlet pipe 3. After being filtered through multiple stages by filter bag 11 and filter bag 212, the air is discharged through the smoke outlet pipe 4. When cleaning is required, the processing unit 7 cleans the calcium oxide powder on the surface of the filter bags. The calcium oxide powder falls into the dust collection hopper 5 through the bottom hole 15. The calcium oxide powder can be collected by opening the valve of the dust discharge pipe 6.

[0029] A moving rod 72 is fixedly connected to the upper side of the moving ring 71. The upper end of the moving rod 72 passes through the upper side of the dust collection cylinder 1 and is fixedly connected to a top plate 73. An electric push rod 74 is fixedly connected between the top plate 73 and the dust collection cylinder 1. The cleaning assembly 75 includes a nozzle 759. Multiple branch blocks 756 are fixedly connected to the lower side of the moving ring 71. Rotating shafts 757 are rotatably connected to the outer sides of the multiple branch blocks 756. Swing blocks 758 are fixedly connected to the outer sides of the multiple rotating shafts 757. The nozzles 759 are arranged in pairs on the side of the swing blocks 758 near the filter bag 11 and the filter bag 22, respectively corresponding to the outer side of the filter bag 11 and the inner side of the filter bag 22, and distributed along the height direction of the filter bag 11 and the filter bag 22. A connecting hose 755 is fixedly connected between the two nozzles 759. A branch pipe 752 is fixedly connected to the upper side of the connecting hose 755. The upper end of the branch pipe 752 is fixedly connected to... A ring pipe 751 is connected to a support block 16 fixedly connected to the outside of the dust collection cylinder 1. An air pump 13 is fixedly connected to the upper side of the support block 16. A conveying hose 14 is fixedly connected between the air pump 13 and the ring pipe 751. When cleaning the calcium oxide powder on the surface of the two filter bags, the electric push rod 74 is controlled to drive the top plate 73 to descend. The top plate 73 drives the moving rod 72 to descend. The moving rod 72 drives the moving ring 71 to descend. The moving ring 71 drives multiple nozzles 759 to move up and down. At the same time, the air pump 13 is started. Under the action of the conveying hose 14 and the ring pipe 751, the pulse airflow is distributed to multiple branch pipes 752 and delivered to the connecting hose 755. Then the airflow is delivered to the nozzles 759, so that the paired nozzles 759 can spray pulse airflow at filter bag 11 and filter bag 22, so that the airflow is evenly sprayed on the surface of the filter bags, improving the uniformity of calcium oxide powder cleaning.

[0030] Control plate 1 7510 is fixedly connected to the outer ends of both rotating shafts 757. Control plate 2 7511 is rotatably connected to the outer side of control plate 1 7510. Rotating block 1 7512 is rotatably connected to the outer side of control plate 2 7511. Control block 7513 is fixedly connected to the upper side of rotating block 1 7512. Rotating block 3 7520 is fixedly connected to the upper side of control block 7513. Inclined plate 7519 is rotatably connected to the outer side of rotating block 3 7520. Guide plate 2 7516 is fixedly connected to the lower side of moving ring 71. Guide block 7517 is slidably connected to the outer side of guide plate 2 7516. Rotating block 2 7518 is fixedly connected to the lower side of guide block 7517. Inclined plate 7519 is rotatably connected to rotating block 2 7518. Fixed block 7 is fixedly connected to the lower side of moving ring 71. 521, a rotating rod 7522 is rotatably connected to the outside of the fixed block 7521, a take-up roller 7523 is fixedly connected to the outside of the rotating rod 7522, an elastic rope 7524 is wound around the outside of the take-up roller 7523, the elastic rope 7524 is fixedly connected to the lifting ring 10, a control plate 3 7525 is fixedly connected to the outer end of the rotating rod 7522, a reciprocating plate 7526 is rotatably connected to the outside of the control plate 3 7525, the reciprocating plate 7526 is rotatably connected to the guide block 7517, a plurality of rectangular holes 754 are opened on the upper side of the moving ring 71, the upper side of the elastic rope 7524 passes through the rectangular holes 754 through the upper side of the moving ring 71, a limit rod 7514 is fixedly connected to the lower side of the moving ring 71, and the limit rod 7514 is slidably connected to the control block 7513.

[0031] During the spraying process of nozzle 759, the moving ring 71 descends, causing the elastic rope 7524 to pull the take-up roller 7523 to rotate. The take-up roller 7523 drives the rotating rod 7522 to rotate, which in turn drives the control plate 3 7525 to rotate. The control plate 3 7525 drives the reciprocating plate 7526 to rotate, which in turn drives the guide block 7517 to move back and forth along the guide plate 2 7516. The guide block 7517 drives the inclined plate 7519 to swing, which in turn drives the control block 7513 to move up and down repeatedly. The control block 7513 drives the control plate 2 7511 to rotate, which in turn drives the control plate 1 7510 to swing. The control plate 1 7510 drives the rotating shaft 757 to rotate, which in turn drives the swing block 758 to swing. The swing block 758 drives the nozzle 759 to swing, expanding the cleaning range and improving the calcium oxide powder stripping effect.

[0032] Example 2

[0033] Based on Example 1, such as Figure 7 , Figure 8As shown, a vibration assembly 76 is provided on the upper side of the dust collection cylinder 1. The vibration assembly 76 includes a control rod 761, which is fixedly connected to the upper side of the lifting ring 10. The upper end of the control rod 761 passes through the upper side of the dust collection cylinder 1 and is fixedly connected to a reciprocating block 762. A contact block 764 is fixedly connected to the lower side of the reciprocating block 762. A top block 765 is fixedly connected to the upper side of the dust collection cylinder 1. A control shaft 767 is rotatably connected to the outer side of the top block 765. A contact block 764 is fixedly connected to the outer side of the control shaft 767. A gear 769 is fixedly connected to the outer end of the cam 768 and the control shaft 767. A mounting plate 7611 is fixedly connected to the outer side of the top plate 73. A toothed plate 7610 that meshes with the gear 769 is fixedly connected to the lower side of the mounting plate 7611. A spring 763 is fixedly connected between the reciprocating block 762 and the dust collection cylinder 1. A bottom hole 15 is opened on the lower side of the filter bag 11. A storage groove 766 is opened on the upper side of the dust collection cylinder 1. The storage groove 766 provides space for the toothed plate 7610 to move.

[0034] When the nozzle 759 is cleaning, the top plate 73 drives the mounting plate 7611 to move up and down. The mounting plate 7611 drives the toothed plate 7610 to move. The toothed plate 7610 meshes with the gear 769 for transmission. The gear 769 drives the control shaft 767 to rotate, which in turn drives the cam 768 to rotate. The cam 768 pushes the contact block 764, causing the reciprocating block 762 to move up and down repeatedly. The reciprocating block 762 drives the control rod 761 to move up and down repeatedly. The control rod 761 drives the lifting ring 10 to vibrate up and down, causing the filter bag 11 and filter bag 2 12 to vibrate accordingly. Combined with the pulsed airflow, this makes it easier for the calcium oxide powder to fall off, enhancing the cleaning effect.

[0035] Working Principle: During operation, air is introduced into the dust collection cylinder 1 through the smoke inlet pipe 3, and then filtered through filter bags 11 and 12. The air is then discharged through the smoke outlet pipe 4. After filtration, the electric push rod 74 drives the top plate 73 to move up and down. The top plate 73 drives the moving rod 72 to move, which in turn drives the moving ring 71 to move up and down repeatedly. The moving ring 71 drives the nozzle 759 to move. Simultaneously, the air pump 13 is activated. Under the action of the conveying hose 14, the annular pipe 751, the branch pipe 752, and the connecting hose 755, the nozzle 759 sprays pulsed airflow onto the two filter bags. The repeated up-and-down movement of the nozzle 759 increases the uniformity of calcium oxide powder removal from the filter bag surface. Simultaneously, under the action of the elastic rope 7524 and the winding roller 7523, the rotating rod 759... Rotating 522, under the action of control plate three 7525 and reciprocating plate 7526, controls the guide block 7517 to move back and forth. The guide block 7517 drives the inclined plate 7519 to swing. Under the action of control block 7513, control plate two 7511 and control plate one 7510, controls the rotating shaft 757 to swing. The rotating shaft 757 drives the swing block 758 to rotate. The swing block 758 drives the nozzle 759 to swing, increasing the cleaning range. At the same time, the top plate 73 drives the toothed plate 7610 on the mounting plate 7611 to move up and down repeatedly. The toothed plate 7610 drives the gear 769 to rotate. Under the action of control shaft 767, cam 768, contact block 764 and reciprocating block 762, the lifting ring 10 on the control rod 761 moves repeatedly, causing filter bag one 11 and filter bag two 12 to vibrate, enhancing the cleaning effect.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage composite dust collection device, comprising a dust collection cylinder (1), characterized in that: A dust collection hopper (5) is provided on the lower side of the dust collection cylinder (1). A dust discharge pipe (6) is fixedly connected to the lower side of the dust collection hopper (5). A guide plate (8) is fixedly connected to the inner wall of the dust collection cylinder (1). A lifting block (9) is slidably connected to the outer side of the guide plate (8). A lifting ring (10) is fixedly connected to the outer side of the lifting block (9). A filter bag (11) is provided on the lower side of the lifting ring (10). A filter bag (12) is provided on the lower side of the lifting ring (10) and inside the filter bag (11). A smoke inlet pipe (3) is fixedly connected to the left side of the dust collection cylinder (1), and a smoke outlet pipe (4) is fixedly connected to the right side of the dust collection cylinder (1). A processing unit (7) is provided inside the dust collection cylinder (1). The processing unit (7) includes a moving ring (71). The moving ring (71) is located between filter bag one (11) and filter bag two (12). A cleaning component (75) is provided outside the moving ring (71). The cleaning component (75) makes the calcium oxide powder on the surface of filter bag one (11) and filter bag two (12) uniformly cleaned. A moving rod (72) is fixedly connected to the upper side of the moving ring (71). The upper end of the moving rod (72) passes through the upper side of the dust collection cylinder (1) and is fixedly connected to the top plate (73). An electric push rod (74) is fixedly connected between the top plate (73) and the dust collection cylinder (1). The cleaning component (75) includes a nozzle (759). Multiple branch blocks (756) are fixedly connected to the lower side of the moving ring (71). Rotating shafts (757) are rotatably connected to the outer sides of the multiple branch blocks (756). Swing blocks (758) are fixedly connected to the outer sides of the multiple rotating shafts (757). The nozzles (759) are arranged in pairs on the side of the swing block (758) close to the filter bag one (11) and the filter bag two (12), respectively corresponding to the outer side of the filter bag one (11) and the inner side of the filter bag two (12), and distributed along the height direction of the filter bag one (11) and the filter bag two (12). Control plate one (7510) is fixedly connected to the outer ends of both rotating shafts (757). Control plate two (7511) is rotatably connected to the outer side of control plate one (7510). Rotating block one (7512) is rotatably connected to the outer side of control plate two (7511). Control block one (7513) is fixedly connected to the upper side of rotating block one (7512). Rotating block three (7520) is fixedly connected to the upper side of control block one (7513). Inclined plate (7519) is rotatably connected to the outer side of rotating block three (7520). Guide plate two (7516) is fixedly connected to the lower side of the moving ring (71). Guide block two (7517) is slidably connected to the outer side of guide plate two (7516). Rotating block two (7517) is fixedly connected to the lower side of guide block two (7517). Block 2 (7518), the inclined plate (7519) is rotatably connected to the rotating block 2 (7518), the lower side of the moving ring (71) is fixedly connected to the fixed block (7521), the outer side of the fixed block (7521) is rotatably connected to the rotating rod (7522), the outer side of the rotating rod (7522) is fixedly connected to the take-up roller (7523), the outer side of the take-up roller (7523) is wound with an elastic rope (7524), the elastic rope (7524) is fixedly connected to the lifting ring (10), the outer end of the rotating rod (7522) is fixedly connected to the control plate 3 (7525), the outer side of the control plate 3 (7525) is rotatably connected to the reciprocating plate (7526), ​​the reciprocating plate (7526) is rotatably connected to the guide block (7517); The upper side of the moving ring (71) is provided with a plurality of rectangular holes (754). The upper side of the elastic rope (7524) passes through the rectangular holes (754) through the upper side of the moving ring (71). A connecting hose (755) is fixedly connected between the two nozzles (759). A branch pipe (752) is fixedly connected to the upper side of the connecting hose (755). An annular pipe (751) is fixedly connected to the upper end of the branch pipe (752). A support block (16) is fixedly connected to the outer side of the dust collection cylinder (1). An air pump (13) is fixedly connected to the upper side of the support block (16). A conveying hose (14) is fixedly connected between the air pump (13) and the annular pipe (751). A limit rod (7514) is fixedly connected to the lower side of the moving ring (71). The limit rod (7514) is slidably connected to the control block (7513).

2. The multi-stage composite dust collection device according to claim 1, characterized in that: A vibration assembly (76) is provided on the upper side of the dust collection cylinder (1). The vibration assembly (76) includes a control rod (761). The control rod (761) is fixedly connected to the upper side of the lifting ring (10). The upper end of the control rod (761) passes through the upper side of the dust collection cylinder (1) and is fixedly connected to a reciprocating block (762). A contact block (764) is fixedly connected to the lower side of the reciprocating block (762). A top block (765) is fixedly connected to the upper side of the dust collection cylinder (1). A control shaft (767) is rotatably connected to the outer side of the top block (765). A cam (768) is fixedly connected to the outer side of the control shaft (767). A gear (769) is fixedly connected to the outer end of the control shaft (767). A mounting plate (7611) is fixedly connected to the outer side of the top plate (73). A toothed plate (7610) that meshes with the gear (769) is fixedly connected to the lower side of the mounting plate (7611).

3. The multi-stage composite dust collection device according to claim 2, characterized in that: A spring (763) is fixedly connected between the reciprocating block (762) and the dust collection cylinder (1). The control rod (761) is slidably connected to the dust collection cylinder (1). A top cover (2) is fixedly connected to the upper side of the dust collection cylinder (1). A valve is provided on the outside of the dust discharge pipe (6). A bottom hole (15) is opened on the lower side of the filter bag (11). A storage groove (766) is opened on the upper side of the dust collection cylinder (1).

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