Pulse blowback device for dust removal filter bag

Abstract

The invention relates to the technical field of filter bag pulse blowback, in particular to a pulse blowback device for a dust removal filter bag, which comprises a dust removal box, the dust removal box comprises a box body, a partition plate, an air inlet pipe and an exhaust pipe, the partition plate is fixedly connected with the inner wall of the box body, one side of the air inlet pipe penetrates through the side wall of the box body and is communicated with the interior of the box body, and the air inlet pipe is located at the bottom of the partition plate; one end of the exhaust pipe is communicated with the top of the box body, a plurality of drain outlets are formed in the bottom of the box body, each dust removal assembly comprises a filter bag body, a bag cage and a back flushing mechanism, the filter bag body penetrates through the partition plate and is fixedly connected with the partition plate, the bag cage can be vertically and movably installed on the box body, and the back flushing mechanism is fixedly connected with the bag cage. In order to prevent flying dust from being attached again, the collecting box is driven to rapidly descend along the supporting rod through contraction of the tension spring, the collecting box is located on the periphery of the filter bag body and bags the flying dust in the descending process, and secondary pollution to the filter bag body caused by dust flying is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pulse back-flushing of filter bags, and in particular to a pulse back-flushing device for dust removal filter bags. Background Art

[0002] A pulse dust collector refers to a dust removal device with a pneumatic pulse back-blowing device. Its principle is to remove dust attached to the outer surface of the filter medium (filter cartridge or bag) by spraying compressed air. It is often used in dust removal equipment such as bag-type dust collectors.

[0003] Pulse back-blowing of dust filter bags is an efficient dust removal method. When dust-laden gas passes through the filter bag, dust is retained on the outer surface of the filter bag, and the purified gas is discharged from the inside of the filter bag. As the filtration proceeds, the dust layer on the filter bag gradually thickens, and the resistance also increases. When the resistance reaches a certain value, the pulse back-blowing system starts. Compressed air is instantly ejected from the pulse valve, and a high-speed airflow is sprayed into the filter bag through the nozzle on the blowing pipe, causing the filter bag to expand rapidly, causing the dust layer on the outer surface of the filter bag to rupture and fall off, thereby achieving dust cleaning.

[0004] For example, a dust collector filter element backwashing device with Chinese patent publication number CN117427424B includes a shell, a partition is arranged in the shell, the partition divides the shell into an upper chamber and a lower chamber, a through hole is opened on the partition, a bag cage is arranged on the partition, a filter bag is covered on the bag cage, the opening of the filter bag is connected to the through hole, and a pulse component is also arranged on the shell. This scheme shrinks and twists the bag cage, and the filter bag is instantly straightened while the pulse is backblown, so that the huge inertia can further make the dust on the filter bag easier to fall off.

[0005] However, it is not convenient to collect the fallen dust. Since the dust is small in mass, it is easy to fly in the dust collector under the action of inertia and airflow after falling off, causing it to re-attach to the filter bag or to the adjacent filter bag. Multiple backblowing is required to achieve a better cleaning effect, which reduces the dust removal efficiency. Summary of the invention

[0006] The object of the present invention is to provide a pulse back-blowing device for dust removal filter bags, which can collect detached dust while cleaning, prevent the scattered dust from re-attaching, and improve the cleaning efficiency.

[0007] To achieve this object, the present invention adopts the following technical solutions: A pulse back-blowing device for dust filter bags is provided, comprising a dust collection box, the dust collection box comprising a box body, a partition, an air inlet pipe and an exhaust pipe, the partition is fixedly connected to the inner wall of the box body, one side of the air inlet pipe passes through the side wall of the box body and is connected to the inside of the box body, the air inlet pipe is located at the bottom of the partition, one end of the exhaust pipe is connected to the top of the box body, a plurality of sewage outlets are provided at the bottom of the box body, and also comprises a plurality of dust collection components, an anti-drifting component and a plurality of unlocking components, the dust collection component comprises a filter bag body, a bag cage and a back-blowing mechanism, the filter bag body passes through the partition and is fixedly connected thereto, the bag cage can be vertically movably installed on the box body, the outer periphery of the bag cage is in contact with the inner wall of the filter bag body, the back-blowing mechanism is installed on the box body, the back-blowing mechanism is used to blow off the dust adsorbed on the filter body, the anti-drifting component comprises a plurality of collection boxes, a plurality of support rods, a plurality of tension springs, a reset mechanism and a plurality of deceleration components Mechanism, the collecting box is located at the periphery of the filter bag body and can be vertically movably installed in the box body, the collecting box comprises an annular box body and a bottom plate, a U-shaped air slot is opened at the bottom of the annular box body, the top wall of the U-shaped air slot is arc-shaped, the bottom plate can be vertically rotatably installed at the bottom of the annular box body, the top of the bottom plate is in contact with the end of the bottom of the annular box body away from the filter bag body, the support rod is fixedly installed in the box body, one end of the annular box body is slidably connected to the periphery of the support rod, the tension spring is sleeved on the periphery of the support rod, one end of the tension spring is fixedly connected to the bottom of the annular box body, and the other end of the tension spring is fixedly connected to the bottom wall of the box body, the reset mechanism and the deceleration mechanism are both installed on the box body, the reset mechanism is used to reset the collecting box, the deceleration mechanism is used to prevent the collecting box from colliding with the box body, the unlocking drive assembly is installed on the partition, and the unlocking drive assembly is used to move the collecting box downward to collect dust.

[0008] Preferably, the bag cage includes a pair of fixing rings, multiple groups of round rods, connecting rods and thrust springs, the multiple groups of round rods are distributed in a circle inside the fixing rods, each group of round rods is composed of multiple round rods connected to each other, a slot is provided at the top of the round rod, the slot is slidably connected to the bottom of another round rod, the top of the round rod is a concave structure, two fixing rings are fixedly connected to the top round rod and the bottom round rod respectively, one end of the connecting rod is fixedly connected to the periphery of the top fixing ring, a vertical plate is fixedly connected to the top of the partition, the top of the vertical plate is fixedly connected to the top wall of the box body, the other end of the connecting rod is slidably connected to the periphery of the vertical plate, one end of the thrust spring is fixedly connected to the top wall of the box body, and the other end of the thrust spring is fixedly connected to the top of the connecting rod.

[0009] Preferably, the anti-scattering component also includes a top plate, the bottom of the top plate is fixedly connected to the bottom wall of the box body, the top of the bottom plate is fixedly connected to a rotating shaft, both ends of the rotating shaft are rotatably connected to one end of the annular box body, torsion springs are sleeved on the periphery of both ends of the rotating shaft, one end of the torsion spring is fixedly connected to the bottom plate, and the other end of the torsion spring is fixedly connected to the annular box body, and one end of the bottom plate is in conflict with the top of the top plate.

[0010] Preferably, the unlocking assembly includes a hydraulic rod and a lifting block, one end of the hydraulic rod is fixedly connected to the top of the partition, the telescopic end of the hydraulic rod is fixedly connected to one end of the lifting block, the lifting block is slidingly connected to the top of the partition, and the other end of the lifting block is a sloped structure and conflicts with the bottom of the connecting rod.

[0011] Preferably, the unlocking assembly also includes a pair of sliding rods and a limiting plate, the sliding rod is fixedly connected to the bottom of the partition, the top of the limiting plate is slidably connected to the periphery of the sliding rod, and one side of the limiting plate is in conflict with the bottom of the base plate.

[0012] Preferably, the unlocking assembly also includes a pair of racks, spur gears and gear shafts, wherein one rack is fixedly connected to one side of the lifting block, the other rack is fixedly connected to one side of the limit plate, the bottom of the spur gear is rotatably connected to the top of the partition, one side of the spur gear is meshed with the rack at the top, the other side of the spur gear is meshed with the top of the gear shaft, the gear shaft passes through the partition and is rotatably connected to it, and the bottom of the gear shaft is meshed with the rack at the bottom.

[0013] Preferably, the reset mechanism includes a pair of slide rails, a pair of electric sliders and a lifting plate. The two slide rails are respectively fixedly connected to the inner walls on both sides of the box body, the electric sliders are slidably connected to the periphery of the slide rails, the two sides of the lifting plate are respectively fixedly connected to the two electric sliders, and a connecting plate is fixedly connected to the top of one end of the annular box body, and the bottom of the connecting plate is in conflict with the top of the lifting plate.

[0014] Preferably, the deceleration mechanism includes a friction plate and a pair of compression springs, the bottom of the friction plate is rotatably connected to the bottom wall of the box body, one end of the compression spring is fixedly connected to the inner wall of the box body, and the other end of the compression spring is fixedly connected to the top of the friction plate. The friction plate is in an inclined state, and a protrusion is fixedly connected to one side of the annular box body, and one side of the protrusion is in conflict with one side of the friction plate.

[0015] Preferably, the back-blowing mechanism includes multiple pulse air pumps and air ducts, the bottom of the pulse air pump is fixedly connected to the side wall of the box, the air outlet of the pulse air pump is connected to one end of the air duct, and the multiple air outlets at the other end of the air duct extend into multiple filter bag bodies respectively.

[0016] Preferably, the dust removal assembly also includes a switch plate and a turntable, one end of the turntable passes through the side wall of the box and is rotatably connected thereto, the top of the switch plate is rotatably connected to the inner wall of the box and fixedly connected to the periphery of the turntable, and one side of the switch plate is in contact with the air inlet pipe.

[0017] Beneficial effects of the present invention: 1. When cleaning the dust on the filter bag body, the present invention contracts the tension spring through the unlocking assembly, driving the collection box to quickly descend along the support rod. The collection box is located at the periphery of the filter bag body. During the descent, the raised dust enters the annular box body through the U-shaped wind slot and is caught. When the collection box falls to the bottom of the box body, the bottom plate opens to let the dust fall, thereby collecting the dust cleaned by the recoil mechanism and transferring it to the sewage outlet, avoiding secondary pollution of the filter bag body caused by dust scattering.

[0018] 2. The bag cage of the present invention can be in two states: soft support and hard support. When two round rods are attached to each other and connected in sequence, each group of round rods forms a hard long rod structure, which can support the filter bag body. When the bottom of the round rod slides upward out of the slot, it can rotate relatively, so that a soft whip structure is formed between each group of round rods, which can follow the filter bag body to swing in a wave-like manner when the recoil airflow passes, improve the dust shaking effect, and increase the expansion and contraction stroke of the filter bag body, further improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 .

[0021] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 .

[0022] Figure 3 This is a cross-sectional view of the box structure of the present invention. Figure 1 .

[0023] Figure 4 This is a cross-sectional view of the box structure of the present invention. Figure 2 .

[0024] Figure 5 This is a cross-sectional view of the box structure of the present invention. Figure 3 .

[0025] Figure 6 It is a schematic diagram of the structure of the collection box of the present invention.

[0026] Figure 7 It is a cross-sectional view of the annular box structure of the present invention.

[0027] Figure 8 It is a cross-sectional view of the round rod structure of the present invention.

[0028] Fig. 9 This is a schematic diagram of the unlocking component structure of the present invention. Figure 1 .

[0029] Fig.10 This is a schematic diagram of the unlocking component structure of the present invention. Figure 2 .

[0030] Fig.11 yes Figure 8 A magnified view of the structure at center.

[0031] Fig.12 yes Figure 5 A magnified view of the structure at center.

[0032] In the figure: 1. Dust removal box; 10. Box body; 100. Sewage outlet; 11. Partition plate; 12. Vertical plate; 13. Air inlet pipe; 14. Exhaust pipe; 2. Dust removal assembly; 20. Filter bag body; 21. Bag cage; 210. Fixing ring; 211. Round rod; 2110. Slot; 212. Connecting rod; 213. Thrust spring; 22. Backflush mechanism; 220. Pulse air pump; 221. Air duct; 23. Switch plate; 24. Turntable; 3. Anti-scattering assembly; 30. Collection box; 300. Ring box body; 3000. U-shaped air trough; 301. Connecting plate; 302. Protrusion; 303. Bottom plate; 304. Rotating shaft; 305. Torsion spring; 31. Support rod; 32. Tension spring; 33. Reset mechanism; 330. Slide rail; 331. Electric slider; 332. Lifting plate; 34. Speed ​​reduction mechanism; 340. Friction plate; 341. Compression spring; 35. Top plate; 4. Unlocking assembly; 40. Hydraulic rod; 41. Lifting block; 42. Sliding rod; 43. Limiting plate; 44. Rack; 45. Spur gear; 46. Gear shaft. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0034] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0035] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is 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 orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] like Figures 1 to 12 As shown: A pulse back-blowing device for dust filter bags comprises a dust removal box 1, which comprises a box body 10, a partition 11, an air inlet pipe 13 and an exhaust pipe 14. The partition 11 is fixedly connected to the inner wall of the box body 10, one side of the air inlet pipe 13 passes through the side wall of the box body 10 and is connected to the inside of the box body 10, the air inlet pipe 13 is located at the bottom of the partition 11, one end of the exhaust pipe 14 is connected to the top of the box body 10, and a plurality of sewage outlets 100 are opened at the bottom of the box body 10. The exhaust gas is input into the box body 10 from the bottom of the box body 10 through the air inlet pipe 13, and then filtered through the filter bag body 20, so that the clean air passes through the top of the filter bag body 20 through the partition 11 and enters the top of the box body 10, and is finally discharged through the exhaust pipe 14, and the dust falls downward to the bottom of the box body 10 and is discharged through the sewage outlet 100, thereby completing the dust removal treatment of the exhaust gas. It also includes multiple dust removal components 2, anti-drifting components 3 and multiple unlocking components 4. The dust removal component 2 includes a filter bag body 20, a bag cage 21 and a back-blowing mechanism 22. The filter bag body 20 passes through the partition 11 and is fixedly connected thereto. The bag cage 21 can be vertically movably installed on the box body 10. The outer periphery of the bag cage 21 fits with the inner wall of the filter bag body 20. The filter bag body 20 is supported by the bag cage 21 so that the filter bag body 20 can be fully unfolded in the box body 10, thereby expanding the contact area with the air and improving the dust removal efficiency. The back-blowing mechanism 22 is installed on the box body 10, and the back-blowing mechanism 22 is used to blow off the dust adsorbed on the filter body. The anti-drifting component 3 includes multiple collecting boxes 30, multiple supporting rods 31, multiple tension springs 32, a reset mechanism 33 and multiple deceleration mechanisms 34. The collecting box 30 is located at the periphery of the filter bag body 20 and can be vertically moved and installed in the box body 10. The collecting box 30 includes an annular box body 300 and a bottom plate 303. A U-shaped wind groove 3000 is opened at the bottom of the annular box body 300, and the top wall of the U-shaped wind groove 3000 is arc-shaped. The bottom plate 303 can be vertically rotatably installed at the bottom of the annular box body 300, and the top of the bottom plate 303 is in contact with one end of the bottom of the annular box body 300 away from the filter bag body 20. The supporting rod 31 is fixedly installed in the box body 10, and one end of the annular box body 300 is slidably connected to the periphery of the supporting rod 31. The tension spring 32 is sleeved on the periphery of the supporting rod 31. One end of the tension spring 32 It is fixedly connected to the bottom of the annular box body 300, and the other end of the tension spring 32 is fixedly connected to the bottom wall of the box body 10. When the dust on the filter bag body 20 is cleaned, the back-blowing mechanism 22 is operated, and the filter bag body 20 is blown from top to bottom by high-pressure air to separate the dust from the filter bag body 20. At the same time, the tension spring 32 is contracted by the unlocking component 4, driving the collection box 30 to quickly descend along the support rod 31. The collection box 30 is located at the periphery of the filter bag body 20. During the descent, the raised dust enters the annular box body 300 through one end of the U-shaped wind groove 3000 close to the filter bag body 20 and moves along the U-shaped wind groove 3000 to the other end so as to be caught. When the collection box 30 falls to the bottom of the box body 10, the bottom plate 303 is opened to let the dust fall, thereby collecting the dust cleaned by the back-blowing mechanism and transferring it to the sewage outlet 100, avoiding secondary pollution of the filter bag body 20 caused by dust drifting.The reset mechanism 33 and the deceleration mechanism 34 are both installed on the box body 10. The reset mechanism 33 is used to reset the collection box 30. The deceleration mechanism 34 is used to prevent the collection box 30 from colliding with the box body 10. The unlocking drive component is installed on the partition 11. The unlocking drive component is used to move the collection box 30 downward to collect dust.

[0038] like Figures 1 to 11 As shown: The bag cage 21 includes a pair of fixing rings 210, multiple groups of round rods 211, connecting rods 212 and thrust springs 213. The multiple groups of round rods 211 are distributed in a circle inside the fixing rods. Each group of round rods 211 is formed by connecting multiple round rods 211 to each other. A slot 2110 is provided on the top of the round rod 211. The slot 2110 is slidably connected to the bottom of another round rod 211. The top of the round rod 211 is a concave structure. The two fixing rings 210 are fixedly connected to the top round rod 211 and the bottom round rod 211 respectively. When the bottom of the round rod 211 is inserted downward into the slot 2110 on the top of the other round rod 211, the two round rods 211 fit each other, and the fixing ring 210 at the bottom conflicts with the bottom wall of the filter bag body 20. The connections in sequence make each group of round rods 211 form a hard long rod structure, which can support the filter bag body 20. When the bottom of the round rod 211 slides upward out of the slot 2110, due to the concave structure at the top of the round rod 211, the two round rods 211 can rotate relative to each other, so that a soft whip structure is formed between each group of round rods 211, which can follow the filter bag body 20 to swing in a wave-like manner when the recoil airflow passes through, thereby improving the dust shaking effect, and increasing the expansion and contraction stroke of the filter bag body 20, further improving the cleaning effect. One end of the connecting rod 212 is fixedly connected to the periphery of the top fixing ring 210, the top of the partition 11 is fixedly connected to the vertical plate 12, the top of the vertical plate 12 is fixedly connected to the top wall of the box body 10, the other end of the connecting rod 212 is slidably connected to the periphery of the vertical plate 12, one end of the thrust spring 213 is fixedly connected to the top wall of the box body 10, and the other end of the thrust spring 213 is fixedly connected to the top of the connecting rod 212. The thrust spring 213 is in a compressed state, and the top fixing ring 210 is pressed down by the thrust provided by the rebound of the thrust spring 213 , thereby ensuring that the bag cage 21 maintains rigidity and providing support for the filter bag body 20 .

[0039] like Figures 1 to 10 As shown: The anti-scattering component 3 also includes a top plate 35, the bottom of the top plate 35 is fixedly connected to the bottom wall of the box body 10, and a rotating shaft 304 is fixedly connected to the top of the bottom plate 303. Both ends of the rotating shaft 304 are rotatably connected to one end of the annular box body 300. Torsion springs 305 are sleeved on the periphery of both ends of the rotating shaft 304. One end of the torsion spring 305 is fixedly connected to the bottom plate 303, and the other end of the torsion spring 305 is fixedly connected to the annular box body 300. One end of the bottom plate 303 is in conflict with the top of the top plate 35. When the collecting box 30 descends to the bottom of the box body 10, one end of the bottom plate 303 contacts the top plate 35 and as the collecting box 30 continues to descend, the top plate 35 squeezes one end of the bottom plate 303, and the bottom plate 303 rotates and tilts around the rotating shaft 304 at the bottom of the annular box body 300, and the torsion spring 305 is compressed. At this time, the bottom plate 303 opens, and the dust collected in the annular box body 300 falls from the U-shaped wind trough 3000 and is discharged through the sewage outlet 100. Subsequently, the collecting box 30 is raised to its original position through the reset mechanism 33, and the bottom plate 303 is separated from the top plate 35. The torsion spring 305 rebounds to make the bottom plate 303 fit with the annular box body 300, closing the U-shaped wind trough 3000 to prepare for the next cleaning.

[0040] like Figures 1 to 12 As shown: The unlocking assembly 4 includes a hydraulic rod 40 and a lifting block 41. One end of the hydraulic rod 40 is fixedly connected to the top of the partition 11. The telescopic end of the hydraulic rod 40 is fixedly connected to one end of the lifting block 41. The lifting block 41 is slidably connected to the top of the partition 11. The other end of the lifting block 41 is an inclined structure and contacts the bottom of the connecting rod 212. When the hydraulic rod 40 is operated, the lifting block 41 is pushed to slide horizontally, so that the connecting rod 212 is lifted up along the inclined surface of the lifting block 41, thereby driving the top fixed ring 210 to rise, so that the bag cage 21 is elongated, and the recoil mechanism is cooperated for cleaning.

[0041] like Figures 1 to 10 As shown: The unlocking assembly 4 further includes a pair of slide bars 42 and a limiting plate 43. The slide bars 42 are fixedly connected to the bottom of the partition 11. The top of the limiting plate 43 is slidably connected to the periphery of the slide bars 42. One side of the limiting plate 43 is in contact with the bottom of the bottom plate 303. The limiting plate 43 is horizontally slid along the slide bars 42, and the collecting box 30 is limited by the limiting plate 43 so that the collecting box 30 stays on the top of the filter bag body 20. When the limiting plate 43 is separated from the collecting box 30, the collecting box 30 descends to collect dust.

[0042] like Figures 1 to 10 As shown: The unlocking assembly 4 also includes a pair of racks 44, a spur gear 45 and a gear shaft 46, wherein one rack 44 is fixedly connected to one side of the lifting block 41, and the other rack 44 is fixedly connected to one side of the limiting plate 43. The bottom of the spur gear 45 is rotatably connected to the top of the partition 11, and one side of the spur gear 45 is meshed with the top rack 44, and the other side of the spur gear 45 is meshed with the top of the gear shaft 46. The gear shaft 46 passes through the partition 11 and is rotatably connected thereto, and the bottom of the gear shaft 46 is meshed with the bottom rack 44. When the lifting block 41 moves horizontally to stretch the bag cage 21, the meshing transmission between the top rack 44 and the spur gear 45 drives the spur gear 45 to rotate, and the meshing transmission between the spur gear 45 and the gear shaft 46 drives the shaft gear to rotate, and the meshing transmission between the gear shaft 46 and the bottom rack 44 drives the bottom rack 44 to move horizontally, and the lifting block 41 and the limiting plate 43 move in opposite directions, so that after the bag cage 21 is stretched, the collection box 30 descends to complete the cleaning operation.

[0043] like Figures 1 to 7 As shown: The reset mechanism 33 includes a pair of slide rails 330, a pair of electric sliders 331 and a lifting plate 332. The two slide rails 330 are fixedly connected to the inner walls of the box body 10 on both sides, the electric sliders 331 are slidably connected to the outer periphery of the slide rails 330, and the two sides of the lifting plate 332 are fixedly connected to the two electric sliders 331 respectively. A connecting plate 301 is fixedly connected to the top of one end of the annular box body 300, and the bottom of the connecting plate 301 and the top of the lifting plate 332 are mutually in conflict. When the collection box 30 is lowered to the bottom of the box body 10, the connecting plate 301 and the lifting plate 332 are mutually fitted. After the dust in the collection box 30 is discharged, the electric slider 331 is powered on to work, driving the lifting plate 332 to slide upward, lifting the collection box 30 and raising it along the support rod 31, and the tension spring 32 is stretched, so that the collection box 30 is reset.

[0044] like Figures 1 to 12 As shown: The speed reduction mechanism 34 includes a friction plate 340 and a pair of compression springs 341. The bottom of the friction plate 340 is rotatably connected to the bottom wall of the box body 10. One end of the compression spring 341 is fixedly connected to the inner wall of the box body 10. The other end of the compression spring 341 is fixedly connected to the top of the friction plate 340. The friction plate 340 is in an inclined state. A protrusion 302 is fixedly connected to one side of the annular box body 300. One side of the protrusion 302 contacts one side of the friction plate 340. When the collection box 30 falls to the bottom of the filter bag body 20, the protrusion 302 contacts the friction plate 340. As the collection box 30 continues to fall, the protrusion 302 squeezes and rubs the friction plate 340, and the compression spring 341 is compressed, so that the friction plate 340 rotates and tilts further, so that the collection box 30 stops falling quickly.

[0045] like Figures 1 to 5 As shown: The back-blowing mechanism 22 includes a plurality of pulse air pumps 220 and an air duct 221. The bottom of the pulse air pump 220 is fixedly connected to the side wall of the box body 10. The air outlet of the pulse air pump 220 is connected to one end of the air duct 221. The plurality of air outlets at the other end of the air duct 221 extend into the plurality of filter bag bodies 20. The pulse air pump 220 is operated to compress the air and quickly pump it into the filter bag body 20 through the air duct 221. The filter bag body 20 is rapidly expanded and contracted by high-speed and high-pressure gas, thereby shaking off the dust adsorbed on the filter bag body 20. The air flows from top to bottom, thereby simultaneously causing the bag cage 21 and the filter bag body 20 to swing from top to bottom in a wave-breaking manner, thereby throwing out the dust and further improving the cleaning effect.

[0046] like Figures 1 to 4 As shown: The dust removal assembly 2 also includes a switch plate 23 and a turntable 24. One end of the turntable 24 passes through the side wall of the box body 10 and is rotatably connected thereto. The top of the switch plate 23 is rotatably connected to the inner wall of the box body 10 and is fixedly connected to the outer periphery of the turntable 24. One side of the switch plate 23 is in contact with the air inlet pipe 13. The angle of the switch plate 23 can be adjusted by rotating the turntable 24, thereby controlling the switch of the air inlet pipe 13, preventing dust from entering the air inlet pipe 13 when cleaning dust, and tilting the switch plate 23 downward when treating exhaust gas, so that particles with larger mass in the exhaust gas fall into the sewage outlet 100 under the action of inertia, thereby improving the exhaust gas treatment effect.

[0047] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not limiting, but are only for the convenience of clearly describing the positional relationship and function between the various components.

Claims

1. A pulse back-blowing device for a dust filter bag, comprising a dust removal box (1), the dust removal box (1) comprising a box body (10), a partition (11), an air inlet pipe (13) and an exhaust pipe (14), the partition (11) being fixedly connected to the inner wall of the box body (10), one side of the air inlet pipe (13) passing through the side wall of the box body (10) and communicating with the interior of the box body (10), the air inlet pipe (13) being located at the bottom of the partition (11), one end of the exhaust pipe (14) being communicated with the top of the box body (10), and a plurality of sewage outlets (100) being provided at the bottom of the box body (10), characterized in that: The invention also comprises a plurality of dust removal components (2), an anti-scattering component (3) and a plurality of unlocking components (4); the dust removal component (2) comprises a filter bag body (20), a bag cage (21) and a back-blowing mechanism (22); the filter bag body (20) passes through the partition plate (11) and is fixedly connected thereto; the bag cage (21) is vertically movably mounted on the box body (10); the outer periphery of the bag cage (21) is in contact with the inner wall of the filter bag body (20); the back-blowing mechanism (22) is mounted on the box body (10); and the back-blowing mechanism (22) is ) is used to blow off the dust adsorbed on the filter body, the anti-scattering assembly (3) comprises a plurality of collection boxes (30), a plurality of support rods (31), a plurality of tension springs (32), a reset mechanism (33) and a plurality of deceleration mechanisms (34), the collection box (30) is located outside the filter bag body (20) and is installed vertically movably in the box body (10), the collection box (30) comprises an annular box body (300) and a bottom plate (303), the bottom of the annular box body (300) is provided with a U-shaped air trough (303) 00), the top wall of the U-shaped air trough (3000) is arc-shaped, the bottom plate (303) is vertically rotatably mounted on the bottom of the annular box body (300), the top of the bottom plate (303) is in contact with one end of the bottom of the annular box body (300) away from the filter bag body (20), the support rod (31) is fixedly mounted in the box body (10), one end of the annular box body (300) is slidably connected to the periphery of the support rod (31), the tension spring (32) is sleeved on the periphery of the support rod (31), one end of the tension spring (32) is in contact with the annular box body (300), and the tension spring (32) is in contact with the annular box body (300). The bottom of the box body (300) is fixedly connected, the other end of the tension spring (32) is fixedly connected to the bottom wall of the box body (10), the reset mechanism (33) and the speed reduction mechanism (34) are both mounted on the box body (10), the reset mechanism (33) is used to reset the collection box (30), the speed reduction mechanism (34) is used to prevent the collection box (30) from colliding with the box body (10), and the unlocking drive assembly is mounted on the partition (11), and the unlocking drive assembly is used to move the collection box (30) downward to collect dust.

2. A pulse back-flushing device for dust filter bags according to claim 1, characterized in that: The bag cage (21) comprises a pair of fixing rings (210), a plurality of groups of round rods (211), a connecting rod (212) and a thrust spring (213). The plurality of groups of round rods (211) are circumferentially distributed inside the fixing rods. Each group of round rods (211) is formed by a plurality of round rods (211) connected to each other. A slot (2110) is provided on the top of the round rod (211). The slot (2110) is slidably connected to the bottom of another round rod (211). The top of the round rod (211) is a concave structure. The two fixing rings (210) are respectively connected to the top of the round rod (211). The top round rod (211) and the bottom round rod (211) are fixedly connected, one end of the connecting rod (212) is fixedly connected to the periphery of the top fixing ring (210), the top of the partition (11) is fixedly connected to a vertical plate (12), the top of the vertical plate (12) is fixedly connected to the top wall of the box body (10), the other end of the connecting rod (212) is slidably connected to the periphery of the vertical plate (12), one end of the thrust spring (213) is fixedly connected to the top wall of the box body (10), and the other end of the thrust spring (213) is fixedly connected to the top of the connecting rod (212).

3. A pulse back-flushing device for dust filter bags according to claim 1, characterized in that: The anti-scattering assembly (3) further comprises a top plate (35), the bottom of the top plate (35) being fixedly connected to the bottom wall of the box body (10), the top of the bottom plate (303) being fixedly connected to a rotating shaft (304), both ends of the rotating shaft (304) being rotatably connected to one end of the annular box body (300), both ends of the rotating shaft (304) being sleeved with a torsion spring (305) on the periphery, one end of the torsion spring (305) being fixedly connected to the bottom plate (303), the other end of the torsion spring (305) being fixedly connected to the annular box body (300), and one end of the bottom plate (303) being in contact with the top of the top plate (35).

4. A pulse back-flushing device for dust filter bags according to claim 2, characterized in that: The unlocking assembly (4) comprises a hydraulic rod (40) and a lifting block (41), one end of the hydraulic rod (40) is fixedly connected to the top of the partition (11), the telescopic end of the hydraulic rod (40) is fixedly connected to one end of the lifting block (41), the lifting block (41) is slidably connected to the top of the partition (11), and the other end of the lifting block (41) is an inclined structure and contacts the bottom of the connecting rod (212).

5. A pulse back-flushing device for dust filter bags according to claim 4, characterized in that: The unlocking assembly (4) further comprises a pair of slide bars (42) and a limit plate (43), wherein the slide bars (42) are fixedly connected to the bottom of the partition plate (11), the top of the limit plate (43) is slidably connected to the periphery of the slide bars (42), and one side of the limit plate (43) is in contact with the bottom of the bottom plate (303).

6. A pulse back-flushing device for dust filter bags according to claim 5, characterized in that: The unlocking assembly (4) further comprises a pair of racks (44), a spur gear (45) and a gear shaft (46), wherein one rack (44) is fixedly connected to one side of the lifting block (41), the other rack (44) is fixedly connected to one side of the limiting plate (43), the bottom of the spur gear (45) is rotatably connected to the top of the partition (11), one side of the spur gear (45) is meshed with the rack (44) at the top, the other side of the spur gear (45) is meshed with the top of the gear shaft (46), the gear shaft (46) passes through the partition (11) and is rotatably connected thereto, and the bottom of the gear shaft (46) is meshed with the rack (44) at the bottom.

7. The pulse back-flushing device for dust filter bags according to claim 1 is characterized in that: The reset mechanism (33) comprises a pair of slide rails (330), a pair of electric sliders (331) and a lifting plate (332); the two slide rails (330) are respectively fixedly connected to the inner walls of both sides of the box body (10); the electric sliders (331) are slidably connected to the periphery of the slide rails (330); both sides of the lifting plate (332) are respectively fixedly connected to the two electric sliders (331); a connecting plate (301) is fixedly connected to the top of one end of the annular box body (300); the bottom of the connecting plate (301) and the top of the lifting plate (332) are in contact with each other.

8. The pulse back-flushing device for dust filter bags according to claim 1 is characterized in that: The speed reduction mechanism (34) comprises a friction plate (340) and a pair of compression springs (341); the bottom of the friction plate (340) is rotatably connected to the bottom wall of the box body (10); one end of the compression spring (341) is fixedly connected to the inner wall of the box body (10); the other end of the compression spring (341) is fixedly connected to the top of the friction plate (340); the friction plate (340) is in an inclined state; a protrusion (302) is fixedly connected to one side of the annular box body (300); one side of the protrusion (302) and one side of the friction plate (340) are in contact with each other.

9. The pulse back-flushing device for dust filter bags according to claim 1, characterized in that: The back-blowing mechanism (22) comprises a plurality of pulse air pumps (220) and an air duct (221); the bottom of the pulse air pump (220) is fixedly connected to the side wall of the box body (10); the air outlet of the pulse air pump (220) is connected to one end of the air duct (221); and the plurality of air outlets at the other end of the air duct (221) respectively extend into the plurality of filter bag bodies (20).

10. The pulse back-flushing device for dust filter bags according to claim 1, characterized in that: The dust removal assembly (2) further comprises a switch plate (23) and a turntable (24); one end of the turntable (24) passes through the side wall of the box body (10) and is rotatably connected thereto; the top of the switch plate (23) is rotatably connected to the inner wall of the box body (10) and is fixedly connected to the periphery of the turntable (24); and one side of the switch plate (23) is in contact with the air inlet pipe (13).

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