Bag-type dust collector for fiberboard production

Abstract

The invention relates to the field of bag-type dust collectors, in particular to a bag-type dust collector for fiberboard production, which comprises a dust collector body, a top cover mounted at the top of the dust collector body, a dust collecting box mounted at the bottom of the dust collector body, a bag mounting plate mounted on the inner side of the dust collector body, and a dust collecting bag mounted at the bottom of the bag mounting plate. An air inlet pipe is mounted on the side face of the bottom end of the dust remover body, an air outlet pipe is mounted on the side face of the top cover, back-blowing dust removal mechanisms capable of moving up and down are mounted on the inner side and the outer side of the dust removal cloth bag, and a back-blowing lifting mechanism located on the inner side of the dust removal cloth bag is mounted at the bottom of the cloth bag mounting plate; a cloth bag bottom plate is installed at the bottom of the dust collection cloth bag, a bottom plate connecting rod is connected between the cloth bag bottom plate and the inner wall of the dust collector body, and a beating vibration mechanism located on the inner side of the dust collection cloth bag is installed at the top of the cloth bag bottom plate. While back-blowing dust removal is carried out, the primary layer can be repaired, and the situation that the primary layer is damaged and the filtering effect is affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of bag dust collectors, and in particular to a bag dust collector for fiberboard production. Background Art

[0002] A large amount of dust particles will be generated during the fiberboard production process. In order to prevent dust from endangering the production environment and personnel safety, the dust needs to be collected and filtered. The bag dust collector is a dry dust filtering device, which is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt, and the dust-containing gas is filtered by the filtering effect of the fiber fabric. When the dust-containing gas enters the bag dust collector, the large particles and high specific gravity of the dust settle due to gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, so that the gas is purified.

[0003] After the filter material of the bag dust collector has been used for a period of time, a layer of dust accumulates on the surface of the filter bag due to effects such as screening, collision, retention, diffusion, and static electricity. This layer of dust is called the primary layer. In the subsequent movement process, the primary layer becomes the main filtration layer of the filter material. Relying on the effect of the primary layer, the filter material with a larger mesh can also obtain a higher filtration efficiency. As the dust accumulates on the surface of the filter material, the efficiency and resistance of the dust collector increase accordingly. When the pressure difference on both sides of the filter material is large, some fine dust particles that have attached to the filter material will be squeezed over, causing the dust collector efficiency to decrease. In addition, if the resistance of the dust collector is too high, the air volume of the dust removal system will significantly decrease. Therefore, after the resistance of the dust collector reaches a certain value, it is necessary to clean the dust in time. However, it should be noted that the primary layer should not be damaged during cleaning to avoid a decrease in efficiency.

[0004] At present, the dust accumulated on the filter bags of bag dust collectors is usually removed by gas backblowing. Under the action of the reverse airflow, the filter bags are forced to shrink or swell to achieve cleaning. The dust removed by backblowing falls into the ash hopper and is discharged to the ash conveying device through the double-layer ash unloading valve. It can also be removed by blowing pulse airflow. The compressed air released instantly by the pulse blowing mechanism is used to induce several times of secondary air to be injected into the filter bags at high speed, causing the filter bags to swell rapidly. Cleaning is achieved by impact vibration and reverse airflow. However, the filter bags swell and deform multiple times during backblowing cleaning, which will cause the gaps between the fibers of the filter bags to change, thereby affecting their filtering effect and service life.

[0005] In addition, although the above-mentioned cleaning method can effectively clean the filter bag, the primary layer on the surface of the filter bag will be damaged when the dust is cleaned by backblowing of the airflow. However, the primary layer is the main filter layer, and its filtering effect will be affected after being damaged. It takes a period of time to form a complete primary layer again, and the filtering effect of the filter bag will decrease during this period of time.

[0006] Therefore, based on the defects of the prior art, the present invention provides a bag dust collector for fiberboard production to solve the above problems. Summary of the invention

[0007] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a bag dust collector for fiberboard production to solve the problems existing in the cleaning method of the existing bag dust collector.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] A bag dust collector for fiberboard production, comprising a dust collector body with an opening at the top, a top cover installed on the top of the dust collector body, a funnel-shaped bottom of the dust collector body and a dust collecting box fixedly installed thereon, a bag mounting plate detachably mounted on the inner side of the top opening of the dust collector body, a plurality of dust bags in a rectangular array fixedly mounted on the bottom of the bag mounting plate, suction holes located on the inner side of each dust bag are penetrated on the upper and lower surfaces of the bag mounting plate, and a dust collecting box connected to the inside of the dust collector body is fixedly mounted on the side surface of the bottom end of the dust collector body. An air inlet pipe connected to the inside is installed in the top cover, an air outlet pipe connected to the inside is installed on the side of the top cover, a back-blowing dust removal mechanism that can move up and down is installed on the inner and outer sides of each dust bag, a back-blowing lifting mechanism located on the inner side of each dust bag is installed at the bottom of the bag mounting plate, a bag bottom plate is fixedly installed at the bottom of each dust bag, a bottom plate connecting rod is fixedly connected between each bag bottom plate and the inner wall of the dust collector body, and a flapping and vibrating mechanism located on the inner side of the dust bag is installed on the top of each bag bottom plate.

[0010] Preferably, an ash discharge pipe connected to the interior is installed on the front side of the ash collecting box, an ash discharge auger is rotatably installed inside the ash collecting box, an ash collecting air suction cylinder is fixedly installed on the side of the ash collecting box, and an ash collecting box filter is penetrated and installed between the interior of the ash collecting air suction cylinder and the interior of the ash collecting box.

[0011] Preferably, the back-blowing dust removal mechanism comprises a back-blowing air supply ring, an air supply cavity, a back-blowing ash receiving ring, an ash receiving cavity, a back-blowing air supply pipe, a back-blowing air supply pipe shaft, a back-blowing discharge pipe, and a discharge one-way valve;

[0012] The interior of the dust bag is provided with a back-blowing air supply ring which can move up and down, and the outer side surface of the back-blowing air supply ring is in contact with the inner side surface of the dust bag, an air supply cavity is circumferentially opened on the outer side surface of the back-blowing air supply ring, a back-blowing ash receiving ring which can move up and down synchronously with the back-blowing air supply ring is provided on the outside of the dust bag, and the inner side surface of the back-blowing ash receiving ring is in contact with the outer side surface of the dust bag, an ash receiving cavity is circumferentially opened on the inner side surface of the back-blowing ash receiving ring, and a back-blowing air supply pipe connected with the interior of the air supply cavity is installed on the top of the back-blowing air supply ring.

[0013] Preferably, a back-blowing air supply pipe shaft is rotatably mounted on the top of the bag mounting plate, the back-blowing air supply pipe shaft is connected to a torsion spring, the other end of the back-blowing air supply pipe upwardly penetrates the bag mounting plate and is wound around the outside of the back-blowing air supply pipe shaft, a back-blowing discharge pipe connected to the inside of the back-blowing ash ring is mounted on the outer side surface of the back-blowing ash ring, a discharge check valve is mounted in the back-blowing discharge pipe, and the bottom end of the back-blowing discharge pipe is bent toward the outer side surface of the dust removal bag;

[0014] A bag scraper abutting against the outer side surface of the dust removal bag is fixedly installed at the bottom of the back-blowing ash receiving ring.

[0015] Preferably, the back-blowing dust removal mechanism further includes a primary interception ring plate, a primary guide ring plate, a primary guide arc groove, and a primary coating ring sheet;

[0016] A primary intercepting ring plate is fixedly installed on the top surface of the ash receiving chamber, and the bottom end of the primary intercepting ring plate is inclined toward the direction of the dust bag; a primary guide ring plate is fixedly installed on the top surface of the back-blowing ash receiving ring, and the top end of the primary guide ring plate is inclined toward the direction of the dust bag; a plurality of primary guide arc grooves uniformly distributed circumferentially and located on the inner sides of the primary intercepting ring plate and the primary guide ring plate are provided between the top surface of the back-blowing ash receiving ring and the top surface of the ash receiving chamber; a primary smearing ring sheet is fixedly installed on the top of the primary guide ring plate, and the primary smearing ring sheet is made of flexible material and has a gap between the outer side surfaces of the dust bag.

[0017] Preferably, the back-blowing lifting mechanism comprises an air supply ring lifting screw, an air supply ring lifting screw sleeve, an air supply ring lifting connecting rod, an air supply ring guide rod, an ash connecting ring lifting screw, and an ash connecting ring guide rod;

[0018] An air supply ring lifting screw located on the inner side of the dust removal bag is rotatably installed between the bottom surface of the bag mounting plate and the top surface of the bag bottom plate, an air supply ring lifting screw sleeve is threadedly installed on the outer side of the air supply ring lifting screw sleeve, a plurality of air supply ring lifting connecting rods are fixedly installed between the outer side surface of the air supply ring lifting screw sleeve and the inner side surface of the back-blowing air supply ring, and a plurality of air supply ring guide rods respectively penetrating the plurality of air supply ring lifting connecting rods are fixedly installed between the bottom surface of the bag mounting plate and the top surface of the bag bottom plate;

[0019] A ash ring lifting screw with a thread penetrating the back-blowing ash ring is rotatably installed between the bottom surface of the cloth bag mounting plate and the top surface of the cloth bag bottom plate, and an ash ring guide rod penetrating the back-blowing ash ring is fixedly installed between the bottom surface of the cloth bag mounting plate and the top surface of the cloth bag bottom plate.

[0020] Preferably, the top ends of the air supply ring lifting screw and the ash receiving ring lifting screw both penetrate upward to the top of the cloth bag mounting plate, and the top ends of both are coaxially fixed with a screw driving sprocket, a screw driving chain is installed between the two screw driving sprockets, and the top ends of the multiple ash receiving ring lifting screws are connected for synchronous rotation through a linkage chain, and the top ends of the two ash receiving ring lifting screws symmetrically located at the middle of the cloth bag mounting plate are coaxially fixed with screw bevel gears, and a dual-axis driving motor is fixedly installed in the middle of the top surface of the cloth bag mounting plate, and driving bevel gears meshing with the screw bevel gears are coaxially fixed on the two rotating shafts of the dual-axis driving motor.

[0021] Preferably, the flapping vibration mechanism includes a flapping vibration gear, a flapping reset torsion spring, a flapping vibration rod, a flapping vibration plate, a flapping drive one-way wheel, and a flapping drive tooth;

[0022] A flapping and vibrating gear is coaxially mounted on the outer side of the bottom end of each air supply ring guide rod, a flapping and vibrating gear is connected to the air supply ring guide rod and a flapping and vibrating rod is fixedly connected to the outer side of the flapping and vibrating gear, a flapping and vibrating plate abutting against the inner side of the dust bag is fixedly mounted on the other end of the flapping and vibrating rod, a flapping and driving one-way wheel is coaxially mounted on the outer side of the bottom end of the air supply ring lifting screw, and a plurality of groups of flapping and driving teeth with equal spacing and circumferential distribution are arranged on the outer side of the flapping and driving one-way wheel.

[0023] The beneficial effects of the present invention are:

[0024] 1. The back-blowing dust removal mechanism can provide a back-blowing airflow to the inner side of the dust bag, thereby blowing the dust layer on the outer side of the dust bag off and discharging the blown dust centrally to prevent the dust from floating inside the dust collector body and re-adhering to the outside of the dust bag. The back-blowing dust removal mechanism can move up and down along the dust bag for cleaning without inflating the dust bag, thus avoiding the situation where the gaps between the fibers of the dust bag become larger due to multiple inflations and thus affecting the filtering effect. In addition, the back-blowing dust removal mechanism can repair the primary layer while back-blowing the dust to prevent the primary layer from being damaged and affecting the filtering effect.

[0025] 2. The initial position of the back-blowing dust removal mechanism is at the top of the dust bag. The back-blowing lifting mechanism can drive the back-blowing dust removal mechanism to rise and fall inside the dust bag. When the back-blowing dust removal mechanism moves downward, the dust bag can be back-blown for dust removal. When the back-blowing lifting mechanism drives the back-blowing dust removal mechanism to move upward, the back-blowing dust removal mechanism can be reset to the top of the dust bag. In the process of the back-blowing dust removal mechanism moving downward to remove dust, the beating and vibration mechanism can continuously beat the dust bag to make the dust bag vibrate, thereby cooperating with the back-blowing dust removal mechanism to remove dust.

[0026] 3. When in use, the backblowing air supply ring and the backblowing ash receiving ring move synchronously, and the backblowing air supply pipe can provide high-pressure gas to the air supply cavity inside the backblowing air supply ring. The high-pressure gas passes through the dust bag from the inside to the outside, thereby blowing down the dust on the outside of the dust bag between the backblowing air supply ring and the backblowing ash receiving ring. In the process of the backblowing air supply ring and the backblowing ash receiving ring moving downward along the dust bag, automatic backblowing and dust removal of the dust bag can be realized, and the blown dust is in the ash receiving cavity and will not float inside the dust collector body, but will be blown to the inside of the ash collecting box below through the backblowing discharge pipe.

[0027] 4. The gas inside the air supply cavity passes through the dust bag and is blown to its outside, where a part of the gas can be intercepted by the primary interception ring plate, and flows out of the ash receiving cavity from multiple primary guide arc grooves along the inclined surface of the primary interception ring plate, and then flows along the inner inclined surface of the primary guide ring plate to the outer surface of the dust bag after backblowing, so that a part of the dust contained in the air flow is re-adhered to the outer side of the dust bag. When the backblowing air supply ring moves downward, the primary layer smearing ring sheet can evenly smear the dust re-adhered to the outer surface of the dust bag, so that a part of the dust is squeezed into the fiber gaps of the dust bag, thereby forming a primary layer again. This operation can repair the primary layer on the outside of the dust bag after backblowing dust removal, avoid the primary layer from being completely cleaned by backblowing, and save the time for the primary layer to form again.

[0028] 5. When the flapping vibration gear rotates, it can drive the flapping vibration rod and the flapping vibration plate away from the inner side of the dust bag, and drive the flapping reset torsion spring to rotate and store force. When the external force is removed, the flapping vibration gear can quickly reverse and reset under the elastic force of the flapping reset torsion spring, thereby driving the flapping vibration rod and the flapping vibration plate to quickly flap toward the inner side of the dust bag, causing the dust bag to vibrate, and continuously flapping the dust bag through multiple flapping vibration plates, thereby assisting the back-blowing dust removal mechanism to perform dust removal operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0030] Figure 2 It is a right side cross-sectional view of the present invention.

[0031] Figure 3 It is a front perspective cross-sectional view of the present invention.

[0032] Figure 4 It is a front plan cross-sectional view of the present invention.

[0033] Figure 5 For the present invention Figure 3 Enlarged view of point A in the middle.

[0034] Figure 6 For the present invention Figure 4 Enlarged view of point B in the middle.

[0035] Figure 7 For the present invention Figure 5 Enlarged view of point C in the middle.

[0036] Figure 8 For the present invention Figure 7 Enlarged view of point D in the middle.

[0037] Fig. 9 For the present invention Figure 6 Enlarged view of point E in the middle.

[0038] Fig.10 For the present invention Figure 6 Three-dimensional cross-sectional view at FF in the middle.

[0039] Fig.11 It is a top cross-sectional view of the top cover of the present invention.

[0040] Fig.12 For the present invention Figure 3 Enlarged view of point G in the middle.

[0041] Fig.13 It is a top view of the sectional view of the beating vibration mechanism of the present invention.

[0042] In the figure: 1. Dust collector body; 2. Top cover; 3. Ash collecting box; 4. Bag mounting plate; 5. Dust collecting bag; 6. Air suction hole; 7. Air inlet pipe; 8. Air outlet pipe; 9. Back-blowing dust collecting mechanism; 10. Back-blowing lifting mechanism; 11. Bag bottom plate; 12. Bottom plate connecting rod; 13. Beating vibration mechanism; 14. Ash discharging pipe; 15. Ash discharging auger; 16. Ash collecting air suction cylinder; 17. Ash collecting box filter; 18. Back-blowing air supply ring; 19. Air supply cavity; 20. Back-blowing ash connecting ring; 21. Ash connecting cavity; 22. Back-blowing air supply pipe; 23. Back-blowing air supply pipe shaft; 24. Back-blowing discharge pipe; 25. Discharge one-way valve; 26. Bag scraper; 27. Initial Layer interception ring plate; 28. Primary guide ring plate; 29. ​​Primary guide arc groove; 30. Primary coating ring plate; 31. Air supply ring lifting screw; 32. Air supply ring lifting screw sleeve; 33. Air supply ring lifting connecting rod; 34. Air supply ring guide rod; 35. Ash connecting ring lifting screw; 36. Ash connecting ring guide rod; 37. Screw drive sprocket; 38. Screw drive chain; 39. Linkage chain; 40. Screw bevel gear; 41. Double-axis drive motor; 42. Drive bevel gear; 43. Beat vibration gear; 44. Beat reset torsion spring; 45. Beat vibration rod; 46. Beat vibration plate; 47. Beat drive one-way wheel; 48. Beat drive tooth. DETAILED DESCRIPTION

[0043] The following will refer to the attached Figure 1 To Attachment Fig.13Various embodiments of the present invention are described in detail.

[0044] Embodiment 1, as attached Figure 1-Figure 13 As shown, a bag dust collector for fiberboard production comprises a dust collector body 1 with an opening at the top, a top cover 2 is installed on the top of the dust collector body 1, the bottom of the dust collector body 1 is funnel-shaped and fixedly installed with an ash collecting box 3, the top cover 2 and the ash collecting box 3 are detachably installed on the dust collector body 1 by flanges and bolts, and the internal structure of the dust collector body 1 can be installed and disassembled by disassembling the two, and a bag mounting plate 4 is detachably installed on the inner side of the top opening of the dust collector body 1, and after opening the top cover 2, the bag mounting plate 4 can be installed and disassembled by bolts, and a plurality of dust bags 5 in a rectangular array are fixedly installed on the bottom of the bag mounting plate 4, the dust bags 5 can be selected from existing filter bags, and the number of dust bags 5 can be determined according to usage requirements. In the embodiment, six dust bags 5 are used. The upper and lower surfaces of the bag mounting plate 4 are penetrated with suction holes 6 located on the inner side of each dust bag 5. The air inside the dust bag 5 can enter the top cover 2 through the suction holes 6. An air inlet pipe 7 connected with the inside of the dust collector body 1 is fixedly installed on the side of the bottom end of the dust collector body 1. The air containing dust can enter the inside of the dust collector body 1 from the air inlet pipe 7. An air outlet pipe 8 connected with the inside of the top cover 2 is installed on the side of the top cover 2. The air inside the dust collector body 1 can be extracted through the air outlet pipe 8, so that the air inside the dust bag 5 is discharged from the suction holes 6. The dust-containing gas in the dust collector body 1 passes through the dust bag 5 to reach the inside thereof and is discharged from the air outlet pipe 8 through the suction holes 6, and the dust is intercepted by the dust bag 5.

[0045] Each of the dust bags 5 is provided with a back-blowing dust removal mechanism 9 that can move up and down on both the inner and outer sides. The back-blowing dust removal mechanism 9 can provide a back-blowing airflow to the inner side of the dust bag 5 that blows toward the outer side thereof, thereby blowing off the dust layer on the outer side of the dust bag 5 and centrally discharging the blown-off dust, thereby preventing the dust from floating inside the dust collector body 1 and also preventing the dust from re-adhering to the outer side of the dust bag 5. Moreover, the back-blowing dust removal mechanism 9 can move up and down along the dust bag 5 for cleaning, without inflating the dust bag 5, thereby preventing the gaps between the fibers of the dust bag 5 from becoming larger due to multiple inflations, thereby affecting the filtering effect.

[0046] In addition, the back-blowing dust removal mechanism 9 can also repair the primary layer while back-blowing the dust, so as to avoid the primary layer being damaged and affecting the filtering effect;

[0047] The bottom of the bag mounting plate 4 is equipped with a back-blowing lifting mechanism 10 located inside each dust bag 5. The initial position of the back-blowing dust removal mechanism 9 is at the top of the dust bag 5. The back-blowing lifting mechanism 10 can drive the back-blowing dust removal mechanism 9 to rise and fall inside the dust bag 5. When the back-blowing dust removal mechanism 9 moves downward, the dust bag 5 can be back-blown to remove dust. When the back-blowing lifting mechanism 10 drives the back-blowing dust removal mechanism 9 to move upward, the back-blowing dust removal mechanism 9 can be reset to the top of the dust bag 5. A bag bottom plate 11 is fixedly installed at the bottom of each dust bag 5, a bottom plate connecting rod 12 is fixedly connected between each bag bottom plate 11 and the inner wall of the dust collector body 1, and a beating and vibration mechanism 13 located on the inner side of the dust bag 5 is installed on the top of each bag bottom plate 11. In the process of the back-blowing dust removal mechanism 9 moving downward to remove dust, the beating and vibration mechanism 13 can continuously beat the dust bag 5 to make the dust bag 5 vibrate, thereby cooperating with the back-blowing dust removal mechanism 9 to remove dust.

[0048] Embodiment 2, based on embodiment 1, as shown in the attached Figure 1-Figure 4 As shown, an ash discharge pipe 14 connected to the interior of the ash collecting box 3 is installed on the front side surface of the ash collecting box 3, and an ash discharge auger 15 is rotatably installed inside the ash collecting box 3. When the ash discharge auger 15 rotates, the dust falling into the interior of the ash collecting box 3 can be discharged from the ash discharge pipe 14, and an ash suction cylinder 16 is fixedly installed on the side of the ash collecting box 3. The interior of the ash suction cylinder 16 and the interior of the ash collecting box 3 are penetrated and installed with an ash collecting box filter 17. In order to prevent the cleaned dust from floating in the dust collector body 1 without falling, or falling at a slow speed, the ash suction cylinder 16 sucks air into the ash collecting box 3, so that an outward airflow is generated in the ash collecting box 3. The airflow can drive the dust inside the dust collector body 1 to quickly enter the ash collecting box 3, and the ash collecting box filter 17 can filter the dust.

[0049] Embodiment 3, based on embodiment 2, as shown in the attached Figure 2-Figure 10 As shown, the back-blowing dust removal mechanism 9 includes a back-blowing air supply ring 18, an air supply cavity 19, a back-blowing ash receiving ring 20, an ash receiving cavity 21, a back-blowing air supply pipe 22, a back-blowing air supply pipe shaft 23, a back-blowing discharge pipe 24, and a discharge one-way valve 25;

[0050] The dust bag 5 is provided with a back-blowing air supply ring 18 that can move up and down, and the outer side surface of the back-blowing air supply ring 18 is in contact with the inner side surface of the dust bag 5, and an air supply cavity 19 is circumferentially opened on the outer side surface of the back-blowing air supply ring 18. The outer side of the dust bag 5 is provided with a back-blowing ash receiving ring 20 that can move up and down synchronously with the back-blowing air supply ring 18, and the inner side surface of the back-blowing ash receiving ring 20 is in contact with the outer side surface of the dust bag 5, and an ash receiving cavity 19 is circumferentially opened on the inner side surface of the back-blowing ash receiving ring 20. Cavity 21, there is a gap between the inner side of the back-blowing ash receiving ring 20 and the outer side of the dust bag 5, the size of the gap is 2.5mm-3.5mm, after the inner side of the back-blowing ash receiving ring 20 is provided with the ash receiving cavity 21, the upper and lower ends of the inner side are fixedly connected with a plurality of soft sealing sheets, the inner side of the back-blowing ash receiving ring 20 is fitted with the outer side of the dust bag 5 through two sealing sheets, and the top of the back-blowing air supply ring 18 is provided with a back-blowing air supply pipe 22 connected with the inside of the air supply cavity 19;

[0051] When in use, the backblowing air supply ring 18 and the backblowing ash receiving ring 20 move synchronously, and the backblowing air supply pipe 22 can provide high-pressure gas to the air supply chamber 19 inside the backblowing air supply ring 18. The high-pressure gas passes through the dust bag 5 from the inside to the outside, thereby blowing down the dust on the outside of the dust bag 5 between the backblowing air supply ring 18 and the backblowing ash receiving ring 20. In the process of the backblowing air supply ring 18 and the backblowing ash receiving ring 20 moving downward along the dust bag 5, automatic backblowing and dust removal of the dust bag 5 can be achieved, and the blown dust is in the ash receiving chamber 21 and will not float inside the dust collector body 1, but will be blown to the inside of the ash collecting box 3 below through the backblowing discharge pipe 24.

[0052] Embodiment 4, based on embodiment 3, as shown in the attached Figure 2-Figure 10 As shown, a back-blowing air supply pipe shaft 23 is rotatably installed on the top of the bag mounting plate 4, and the back-blowing air supply pipe shaft 23 is connected to a torsion spring. The other end of the back-blowing air supply pipe 22 passes through the bag mounting plate 4 upward and is wound around the outside of the back-blowing air supply pipe shaft 23. When the back-blowing air supply ring 18 moves downward, it is necessary to pull the back-blowing air supply pipe 22 to move synchronously. The back-blowing air supply pipe 22 pulls the back-blowing air supply pipe shaft 23 to rotate and drives the torsion spring to rotate and store force. When the back-blowing air supply ring 18 moves upward, the back-blowing air supply pipe shaft 23 can be reversed and reset under the elastic force of the torsion spring, and the back-blowing air supply pipe 22 is wound around.

[0053] A back-blowing discharge pipe 24 connected to the interior is installed on the outer surface of the back-blowing ash receiving ring 20, and a discharge check valve 25 is installed in the back-blowing discharge pipe 24, so that the dust-containing air inside the ash receiving chamber 21 can only be discharged through the back-blowing discharge pipe 24, and the air inside the dust collector body 1 cannot enter the ash receiving chamber 21 through the back-blowing discharge pipe 24. The bottom end of the back-blowing discharge pipe 24 is bent toward the outer side of the dust bag 5. When the bottom end of the back-blowing discharge pipe 24 discharges high-pressure gas containing dust, the discharged high-pressure gas containing dust can be sprayed on the uncleaned outer surface of the dust bag 5 below it, so that the high-pressure gas drives the high-speed flowing dust to impact the dust on the outer surface of the dust bag 5, so that a part of the dust on the outermost layer of the dust bag 5 can fall off in advance;

[0054] A bag scraper 26 abutting against the outer side of the dust bag 5 is fixedly installed at the bottom of the back-blowing ash ring 20. When the back-blowing ash ring 20 moves downward, the bag scraper 26 can initially scrape off the dust on the surface of the dust bag 5.

[0055] Embodiment 5, based on embodiment 4, as shown in the attached Figure 7-Figure 10 As shown, the back-blowing dust removal mechanism 9 also includes a primary interception ring plate 27, a primary guide ring plate 28, a primary guide arc groove 29, and a primary coating ring sheet 30;

[0056] A primary interception ring plate 27 is fixedly installed on the top surface of the ash receiving chamber 21, and the bottom end of the primary interception ring plate 27 is inclined toward the dust bag 5. A primary guide ring plate 28 is fixedly installed on the top surface of the back-blowing ash receiving ring 20, and the top end of the primary guide ring plate 28 is inclined toward the dust bag 5. A plurality of primary guide arc grooves 29 are evenly distributed in the circumferential direction and located on the inner sides of the primary interception ring plate 27 and the primary guide ring plate 28 between the top surface of the back-blowing ash receiving ring 20 and the top surface of the ash receiving chamber 21. A primary coating ring sheet 30 is fixedly installed on the top of the primary guide ring plate 28. The primary coating ring sheet 30 is made of a flexible material (a rubber sheet can be selected), and has a gap between the outer side surfaces of the dust bag 5. The thickness of the primary layer of the bag dust collector is usually 2.5 to 3.5 mm, so the size of the gap is set to 2.5mm-3.5mm;

[0057] During use, the gas inside the air supply chamber 19 passes through the dust bag 5 and is blown toward the outside thereof, wherein a portion of the gas can be intercepted by the primary interception ring plate 27, and flows out of the ash receiving chamber 21 from a plurality of primary guide arc grooves 29 along the inclined surface of the primary interception ring plate 27, and then flows toward the outer surface of the dust bag 5 after backblowing along the inner inclined surface of the primary guide ring plate 28, so that a portion of the dust contained in the air flow is re-adhered to the outer side surface of the dust bag 5. When the backblowing air supply ring 18 moves downward, the primary layer coating ring sheet 30 can squeeze and coat the dust re-adhered to the outer surface of the dust bag 5 evenly, and squeeze a portion of the dust into the fiber gaps of the dust bag 5, thereby forming a primary layer of a certain thickness again. This operation can repair the primary layer on the outside of the dust bag 5 after backblowing dust removal, avoid the primary layer from being completely cleaned by backblowing, and save the time for the primary layer to be formed again.

[0058] When the backblowing air supply ring 18 and the backblowing ash connecting ring 20 move from the bottom end of the dust bag 5 to the top thereof, the backblowing air supply pipe 22 no longer supplies air to the inside of the air supply cavity 19, that is, the backblowing dust removal operation is performed only when the backblowing air supply ring 18 and the backblowing ash connecting ring 20 move downward, and the backblowing dust removal operation is not performed during the process of the two moving upward and resetting, so as to avoid damaging the primary layer after the smearing and repairing, and when the two move upward, there is a gap between the primary layer smearing ring sheet 30 and the outer side surface of the dust bag 5, so the new primary layer will not be damaged, and the multiple soft sealing sheets on the inner side of the backblowing ash connecting ring 20 can be flexibly deformed, and although they may come into contact with the primary layer, they will not have a significant impact on the new primary layer.

[0059] Embodiment 6, based on embodiment 3, as shown in the attached Figure 5-Figure 11 As shown, the back-blowing lifting mechanism 10 includes an air supply ring lifting screw 31, an air supply ring lifting screw sleeve 32, an air supply ring lifting connecting rod 33, an air supply ring guide rod 34, an ash receiving ring lifting screw 35, and an ash receiving ring guide rod 36;

[0060] An air supply ring lifting screw 31 located on the inner side of the dust removal bag 5 is rotatably installed between the bottom surface of the bag mounting plate 4 and the top surface of the bag bottom plate 11, an air supply ring lifting screw 31 is threadedly installed on the outer side of the air supply ring lifting screw 31, a plurality of air supply ring lifting connecting rods 33 are fixedly installed between the outer side surface of the air supply ring lifting screw 32 and the inner side surface of the back-blowing air supply ring 18, a plurality of air supply ring guide rods 34 respectively penetrating the plurality of air supply ring lifting connecting rods 33 are fixedly installed between the bottom surface of the bag mounting plate 4 and the top surface of the bag bottom plate 11, when the air supply ring lifting screw 31 rotates, it can drive the air supply ring lifting screw 32 and the plurality of air supply ring lifting connecting rods 33 to slide up and down along the plurality of air supply ring guide rods 34 respectively, thereby realizing the up and down movement of the back-blowing air supply ring 18;

[0061] A ash ring lifting screw 35 with a thread penetrating the back-blowing ash ring 20 is rotatably installed between the bottom surface of the bag mounting plate 4 and the top surface of the bag bottom plate 11. The back-blowing ash ring 20 and the ash ring lifting screw 35 are threadedly matched. An ash ring guide rod 36 penetrating the back-blowing ash ring 20 is fixedly installed between the bottom surface of the bag mounting plate 4 and the top surface of the bag bottom plate 11. When the ash ring lifting screw 35 rotates, it can drive the back-blowing ash ring 20 along the ash ring guide rod The rod 36 slides up and down. When in use, the air supply ring lifting screw 31 and the ash receiving ring lifting screw 35 can be rotated at the same time, so that the backblowing air supply ring 18 and the backblowing ash receiving ring 20 can be moved up and down synchronously. The backblowing air supply ring 18 and the backblowing ash receiving ring 20 move from the top of the dust bag 5 to the bottom thereof to perform backblowing dust removal, and then move from the bottom of the dust bag 5 to the top thereof (backblowing dust removal is not performed in this process), thereby completing a complete backblowing dust removal operation.

[0062] Embodiment 7, based on embodiment 6, as shown in the attached Figure 5 , Figure 6 , Fig.11 As shown, the top ends of the air supply ring lifting screw 31 and the ash receiving ring lifting screw 35 both penetrate upward to the top of the bag mounting plate 4, and the top ends of the two are coaxially fixed with a screw drive sprocket 37, and a screw drive chain 38 is installed between the two screw drive sprockets 37, so that the two can rotate synchronously, and the top ends of the multiple ash receiving ring lifting screws 35 are connected for synchronous rotation through a linkage chain 39, so that the multiple ash receiving ring lifting screws 35 can rotate synchronously, and the top ends of the two symmetrical ash receiving ring lifting screws 35 located at the middle of the bag mounting plate 4 are coaxially fixed with screw bevel gears 40, and the bag mounting A double-axis drive motor 41 is fixedly installed in the middle of the top surface of the plate 4, and the double-axis drive motor 41 is connected to a power supply and a controller. Drive bevel gears 42 meshing with the screw bevel gear 40 are coaxially fixedly installed on the two rotating shafts of the double-axis drive motor 41. Starting the double-axis drive motor 41 can drive the two drive bevel gears 42 to rotate, and the two drive bevel gears 42 can simultaneously drive the two screw bevel gears 40 to rotate synchronously. Through the connection of the linkage chain 39 and the screw drive chain 38, multiple air supply ring lifting screws 31 and ash receiving ring lifting screws 35 can rotate synchronously, thereby achieving the effect of simultaneous back-blowing dust removal of multiple back-blowing dust removal mechanisms 9.

[0063] Embodiment 8, based on embodiment 6, as shown in the attached Figure 3 , Fig.12 , Fig.13 As shown, the flapping vibration mechanism 13 includes a flapping vibration gear 43, a flapping reset torsion spring 44, a flapping vibration rod 45, a flapping vibration plate 46, a flapping drive one-way wheel 47, and a flapping drive tooth 48;

[0064] A flapping vibration gear 43 is coaxially mounted on the outer side of the bottom end of each air supply ring guide rod 34, and a flapping reset torsion spring 44 is connected between the flapping vibration gear 43 and the air supply ring guide rod 34. A flapping vibration rod 45 is fixedly connected to the outer side of the flapping vibration gear 43, and a flapping vibration plate 46 abutting against the inner side surface of the dust removal bag 5 is fixedly mounted on the other end of the flapping vibration rod 45. When the flapping vibration gear 43 does not rotate, the flapping vibration plate 46 abuts against the inner side surface of the dust removal bag 5. When the flapping vibration gear 43 is driven by external force, the flapping vibration plate 46 abuts against the inner side surface of the dust removal bag 5. When the wheel 43 rotates, it can drive the beating vibration rod 45 and the beating vibration plate 46 away from the inner side of the dust bag 5, and drive the beating reset torsion spring 44 to rotate and store force. When the external force is removed, the beating vibration gear 43 can quickly reverse and reset under the elastic force of the beating reset torsion spring 44, thereby driving the beating vibration rod 45 and the beating vibration plate 46 to quickly beat the inner side of the dust bag 5, so that the dust bag 5 vibrates, and the dust bag 5 is continuously beaten by multiple beating vibration plates 46, thereby assisting the back-blowing dust removal mechanism 9 to perform dust removal operation;

[0065] A flapping drive one-way wheel 47 is coaxially fixedly installed on the outer side of the bottom end of the air supply ring lifting screw 31. The flapping drive one-way wheel 47 is divided into an inner wheel and an outer wheel. A ratchet and pawl mechanism is provided between the inner wheel and the outer wheel, so that when the inner wheel rotates, it can drive the outer wheel to rotate in one direction, and when the inner wheel rotates in the other direction, it rotates by itself while the outer wheel does not rotate (refer to the sprocket of the rear wheel of a bicycle). A plurality of groups of flapping drive teeth 48 with equal spacing and circumferential distribution are arranged on the outer side of the flapping drive one-way wheel 47. When the air supply ring lifting screw 31 rotates and drives the back-blowing air supply ring 18 to move downward for back-blowing dust removal operation, the flapping drive one-way wheel 47 can be driven to rotate, so that the plurality of groups of flapping drive teeth 48 on the outer side can be in turn with the plurality of flapping vibration teeth The wheel 43 is intermittently meshed and drives the flapping vibration gear 43 to rotate a certain angle. When the flapping drive tooth 48 is disengaged from the flapping vibration gear 43, the flapping vibration gear 43 can drive the flapping vibration plate 46 to quickly reverse and reset under the elastic force of the flapping reset torsion spring 44 to flap the dust removal bag 5. When the air supply ring lifting screw 31 rotates in the opposite direction to drive the back-blowing air supply ring 18 to move upward and reset, the air supply ring lifting screw 31 can only drive the inner wheel of the flapping drive one-way wheel 47 to rotate, and will not drive its outer wheel to rotate. At this time, the flapping vibration gear 43 will not be able to rotate, so that in the process of the back-blowing dust removal mechanism 9 resetting upward, no flapping and vibration operation will be performed, thereby avoiding damage to the new primary layer.

[0066] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0067] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A bag dust collector for fiberboard production, characterized in that: The invention comprises a dust collector body (1) with an opening at the top, a top cover (2) being installed on the top of the dust collector body (1), a funnel-shaped bottom on which a dust collecting box (3) is fixedly installed, a bag mounting plate (4) being detachably installed on the inner side of the top opening of the dust collector body (1), a plurality of dust bags (5) in a rectangular array being fixedly installed on the bottom of the bag mounting plate (4), an air suction hole (6) located on the inner side of each dust bag (5) being penetrated through the upper and lower surfaces of the bag mounting plate (4), an air inlet pipe (7) communicating with the interior of the dust collector body (1) being fixedly installed on the side surface of the bottom end of the dust collector body (1), and the top An air outlet pipe (8) connected to the inside of the cover (2) is installed on the side surface of the cover (2); a back-blowing dust removal mechanism (9) that can move up and down is installed on the inner and outer sides of each dust bag (5); a back-blowing lifting mechanism (10) located on the inner side of each dust bag (5) is installed at the bottom of the bag mounting plate (4); a bag bottom plate (11) is fixedly installed at the bottom of each dust bag (5); a bottom plate connecting rod (12) is fixedly connected between each bag bottom plate (11) and the inner wall of the dust collector body (1); and a beating vibration mechanism (13) located on the inner side of the dust bag (5) is installed at the top of each bag bottom plate (11).

2. A bag filter for fiberboard production according to claim 1, characterized in that: An ash discharge pipe (14) communicating with the interior of the ash collecting box (3) is installed on the front side surface thereof, an ash discharge auger (15) is rotatably installed inside the ash collecting box (3), an ash collecting air suction cylinder (16) is fixedly installed on the side surface of the ash collecting box (3), and an ash collecting box filter (17) is installed and penetrated between the interior of the ash collecting air suction cylinder (16) and the interior of the ash collecting box (3).

3. A bag dust collector for fiberboard production according to claim 1, characterized in that: The back-blowing dust removal mechanism (9) comprises a back-blowing air supply ring (18), an air supply cavity (19), a back-blowing ash receiving ring (20), an ash receiving cavity (21), a back-blowing air supply pipe (22), a back-blowing air supply pipe shaft (23), a back-blowing discharge pipe (24), and a discharge one-way valve (25); The interior of the dust bag (5) is provided with a back-blowing air supply ring (18) which can move up and down, and the outer side surface of the back-blowing air supply ring (18) is in contact with the inner side surface of the dust bag (5), and an air supply cavity (19) is circumferentially provided on the outer side surface of the back-blowing air supply ring (18). The outer side of the dust bag (5) is provided with a back-blowing ash receiving ring (20) which can move up and down synchronously with the back-blowing air supply ring (18), and the inner side surface of the back-blowing ash receiving ring (20) is in contact with the outer side surface of the dust bag (5), and an ash receiving cavity (21) is circumferentially provided on the inner side surface of the back-blowing ash receiving ring (20), and a back-blowing air supply pipe (22) which is connected to the inside of the air supply cavity (19) is installed on the top of the back-blowing air supply ring (18).

4. A bag dust collector for fiberboard production according to claim 3, characterized in that: A back-blowing air supply pipe shaft (23) is rotatably mounted on the top of the bag mounting plate (4), and the back-blowing air supply pipe shaft (23) is connected to a torsion spring. The other end of the back-blowing air supply pipe (22) passes through the bag mounting plate (4) upward and is then wound around the outside of the back-blowing air supply pipe shaft (23). A back-blowing discharge pipe (24) connected to the inside of the back-blowing ash ring (20) is mounted on the outside surface of the back-blowing ash ring (20), and a discharge check valve (25) is mounted inside the back-blowing discharge pipe (24). The bottom end of the back-blowing discharge pipe (24) is bent toward the outside of the dust bag (5). A bag scraper (26) is fixedly mounted on the bottom of the back-blowing ash receiving ring (20) and is in contact with the outer side surface of the dust removal bag (5).

5. A bag dust collector for fiberboard production according to claim 4, characterized in that: The back-blowing dust removal mechanism (9) further comprises a primary interception ring plate (27), a primary flow guide ring plate (28), a primary flow guide arc groove (29), and a primary coating ring sheet (30); A primary intercepting ring plate (27) is fixedly mounted on the top surface of the ash receiving chamber (21), and the bottom end of the primary intercepting ring plate (27) is inclined toward the dust bag (5). A primary guide ring plate (28) is fixedly mounted on the top surface of the back-blowing ash receiving ring (20), and the top end of the primary guide ring plate (28) is inclined toward the dust bag (5). A plurality of primary guide arc grooves (29) are uniformly distributed in the circumferential direction and are located on the inner sides of the primary intercepting ring plate (27) and the primary guide ring plate (28) between the top surface of the back-blowing ash receiving ring (20) and the top surface of the ash receiving chamber (21). A primary smearing ring sheet (30) is fixedly mounted on the top end of the primary guide ring plate (28), and the primary smearing ring sheet (30) is made of a flexible material and has a gap between the outer side surfaces of the dust bag (5).

6. A bag dust collector for fiberboard production according to claim 3, characterized in that: The back-blowing lifting mechanism (10) comprises an air supply ring lifting screw (31), an air supply ring lifting screw sleeve (32), an air supply ring lifting connecting rod (33), an air supply ring guide rod (34), an ash receiving ring lifting screw (35), and an ash receiving ring guide rod (36); An air supply ring lifting screw (31) located inside the dust removal bag (5) is rotatably mounted between the bottom surface of the bag mounting plate (4) and the top surface of the bag bottom plate (11); an air supply ring lifting screw sleeve (32) is threadedly mounted on the outer side of the air supply ring lifting screw sleeve (31); a plurality of air supply ring lifting connecting rods (33) are fixedly mounted between the outer side surface of the air supply ring lifting screw sleeve (32) and the inner side surface of the back-blowing air supply ring (18); a plurality of air supply ring guide rods (34) respectively penetrating the plurality of air supply ring lifting connecting rods (33) are fixedly mounted between the bottom surface of the bag mounting plate (4) and the top surface of the bag bottom plate (11); A ash ring lifting screw (35) threadedly penetrating the back-blowing ash ring (20) is rotatably mounted between the bottom surface of the bag mounting plate (4) and the top surface of the bag bottom plate (11), and a ash ring guide rod (36) penetrating the back-blowing ash ring (20) is fixedly mounted between the bottom surface of the bag mounting plate (4) and the top surface of the bag bottom plate (11).

7. A bag dust collector for fiberboard production according to claim 6, characterized in that: The top ends of the air supply ring lifting screw (31) and the ash receiving ring lifting screw (35) are both extended upward to the top of the bag mounting plate (4), and the top ends of both are coaxially fixed with a screw driving sprocket (37), a screw driving chain (38) is installed between the two screw driving sprockets (37), and the top ends of the plurality of ash receiving ring lifting screws (35) are synchronously rotated by a linkage chain (39), and the top ends of two ash receiving ring lifting screws (35) symmetrically located at the middle of the bag mounting plate (4) are coaxially fixed with a screw bevel gear (40), and a dual-axis driving motor (41) is fixedly installed in the middle of the top surface of the bag mounting plate (4), and a driving bevel gear (42) meshing with the screw bevel gear (40) is coaxially fixedly installed on the two rotating shafts of the dual-axis driving motor (41).

8. A bag filter for fiberboard production according to claim 6, characterized in that: The flapping vibration mechanism (13) comprises a flapping vibration gear (43), a flapping reset torsion spring (44), a flapping vibration rod (45), a flapping vibration plate (46), a flapping driving one-way wheel (47), and a flapping driving tooth (48); A flapping vibration gear (43) is coaxially mounted on the outer side of the bottom end of each air supply ring guide rod (34), a flapping reset torsion spring (44) is connected between the flapping vibration gear (43) and the air supply ring guide rod (34), a flapping vibration rod (45) is fixedly connected to the outer side of the flapping vibration gear (43), a flapping vibration plate (46) abutting against the inner side surface of the dust removal bag (5) is fixedly mounted on the other end of the flapping vibration rod (45), a flapping drive one-way wheel (47) is coaxially mounted on the outer side of the bottom end of the air supply ring lifting screw (31), and a plurality of groups of flapping drive teeth (48) distributed circumferentially at equal intervals are arranged on the outer side of the flapping drive one-way wheel (47).

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