Efficient anti-explosion honeycomb type dust filter

Abstract

The utility model relates to an efficient anti-explosion honeycomb type dust filter, and belongs to the technical field of honeycomb type dust removal. Comprising a machine box, a first-stage pre-filtering chamber, a second-stage dust filtering chamber and an air cleaning chamber are arranged in the machine box, a dust filtering net is arranged in the first-stage pre-filtering chamber, a dust cage unit is arranged in the second-stage filtering chamber, the dust filtering net is used for pre-filtering air containing short fibers and dust, the dust cage unit is used for secondarily filtering the air, and the air cleaning chamber is used for cleaning air. The clean air flows into the clean air chamber and then is discharged; a first-stage dust collection unit is arranged in the first-stage pre-filtering chamber, and the first-stage dust collection unit is used for collecting fiber impurities left on the dust filtering net; a variable-speed one-way dust collection mechanism is arranged in the secondary dust filtration chamber, and the variable-speed one-way dust collection mechanism slowly gets close to the cage unit for dust removal and then quickly gets away from the dust cage unit. The structure is compact, operation is convenient, the dust collection and cleaning period is shortened, the dust treatment capacity is improved, and the service life of the filter bag is prolonged.

Description

Technical Field

[0001] The utility model relates to a high-efficiency explosion-proof honeycomb dust filter, belonging to the technical field of honeycomb dust removal. Background Art

[0002] A honeycomb dust collector is an air filtration device that performs secondary filtration, separation, filtration, and removal of fiber dust emitted during the textile process. Currently, honeycomb dust collectors have the following shortcomings: 1. Long vacuum cycles; 2. High friction caused by the filter media during forward and reverse rotation of the suction nozzle, which easily compacts the filter media and results in high dust concentrations in the filtered air; 3. The dust removal method is almost ineffective against fine powdery dust, which adheres to the mesh of the nylon mesh bag. Both scraper agitation and oscillation are ineffective, resulting in long cleaning times and low efficiency. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a high-efficiency explosion-proof honeycomb dust filter in accordance with the above-mentioned prior art, which has a compact structure, is easy to operate, reduces the dust collection and cleaning cycle, improves the dust handling capacity, increases the service life of the filter bag, and improves the dust cleaning efficiency and dust cleaning effect.

[0004] The technical solution adopted by the present invention to solve the above problems is: a high-efficiency explosion-proof honeycomb dust filter, including a chassis, wherein a first-level pre-filter chamber, a second-level dust filter chamber and a clean air chamber are arranged in the said first-level pre-filter chamber, a vertically arranged dust filter net is provided in the said second-level filter chamber, and a plurality of dust cage units arranged in parallel are provided in the said second-level filter chamber, air containing short fibers and dust enters the said first-level pre-filter chamber, the said dust filter net pre-filters the air containing short fibers and dust, and the pre-filtered air enters the said second-level dust filter chamber, the said dust cage unit performs a second filtration on the air, and then the clean air flows into the clean air chamber and is discharged; a first-level dust collection unit is provided in the said first-level pre-filter chamber, one end of the said first-level dust collection unit faces the dust filter net, and the other end is connected to a first-level pressure The first-level dust suction unit sucks away the fiber impurities left on the dust filter screen and enters the first-level compressor, and the first-level compressor separates the fibers and air entering, and the fiber impurities are compressed and discharged; the second-level dust filter chamber is provided with a variable-speed one-way dust suction mechanism, the outlet of the variable-speed one-way dust suction mechanism is connected to the inlet of the dust collecting fan through the dust collecting inner connecting pipe, and the outlet of the dust collecting fan is connected to the bypass back-blowing dust bag-type dust collecting unit through the dust collecting outer connecting pipe; the variable-speed one-way dust suction mechanism can slowly approach several dust cage units for dust removal, and then quickly move away from the dust cage units; the fiber dust sucked out by the variable-speed one-way dust suction mechanism flows into the bypass back-blowing dust bag-type dust collecting unit through the dust collecting inner connecting pipe, the dust collecting fan, and the dust collecting outer connecting pipe, and then is separated, compressed, and discharged.

[0005] The first-level dust suction unit includes a horizontally arranged core sleeve, a suction arm is provided on the core sleeve, the suction arm inlet faces the dust filter, and the suction arm outlet is connected to the inner cavity of the core sleeve; a suction nozzle middle section is provided in the first-level pre-filter chamber, one end of the suction nozzle middle section is connected to the core sleeve outlet, and a trumpet-shaped wool felt sealing ring is provided at the junction of the core sleeve outlet and the suction nozzle middle section, one end of the wool felt sealing ring is fixed to one end of the suction nozzle middle section through a fixing part, and the other end of the wool felt sealing ring is sleeved on the outer periphery of the core sleeve; the inner cavity of the core sleeve and the inner cavity of the suction nozzle middle section form a suction channel; the other end of the suction nozzle middle section is fixed to the box body and connected to the external fan through an external suction pipe.

[0006] The variable speed one-way dust suction mechanism includes a suction box, and a suction nozzle unit is provided on the suction box; the suction box is fixed to the bottom of the trolley, and the trolley walking roller groups are symmetrically arranged on both sides of the trolley, the trolley is arranged in the trolley, and the trolley tracks are symmetrically provided on the inner wall of the trolley, and the trolley walking roller group is arranged on the trolley track. The trolley driving device drives the trolley walking roller group to move forward slowly and / or backward quickly along the trolley track, driving the suction box and the suction nozzle unit to move synchronously, so that the suction nozzle unit slowly approaches the dust cage unit to perform dust collection, or Quickly move away from the dust cage unit; a fixed plate is provided on the top of the trolley, a trolley walking roller group is provided on the fixed plate, a trolley track is set in the dust removal box, the trolley walking roller group is provided on the trolley track, and the trolley driving device drives the trolley walking roller group to move left and right along the trolley track, driving the suction box and the suction nozzle unit to move left and right synchronously, so that the suction nozzle unit moves to the next row of dust cage units; a suction nozzle driving device is provided on the suction box, and the suction nozzle driving device drives the suction nozzle unit to rotate unidirectionally, thereby sucking dust from the dust cage unit.

[0007] The suction nozzle unit includes a plurality of suction nozzles, and the plurality of suction nozzles are arranged vertically at intervals along the suction box; any of the dust cage units includes a plurality of dust cages arranged vertically at intervals, and the suction nozzles are matched with the anti-deformation dust cages in the same row; the suction nozzle driving device includes a suction nozzle reduction motor and a suction nozzle transmission mechanism, and the suction nozzle reduction motor is arranged on the upper part of the suction box; the suction nozzle transmission mechanism includes a plurality of driven sprockets, and the driven sprockets are respectively arranged at the ends of the suction nozzles located in the suction box, and a driving sprocket is arranged on the output shaft of the suction nozzle reduction motor, and the driving sprocket and the driven sprocket are connected by a chain.

[0008] The fixed plate is also provided with a trolley track self-cleaning device, which includes two symmetrically arranged air nozzles. Fixed brackets are respectively provided on both sides of the fixed plate, and air pipe joints are respectively provided on the fixed brackets. One end of the air pipe joint is connected to the air nozzle, and the air outlet of the air nozzle is respectively facing the trolley track; the other end of the air pipe joint is connected to the air pipe, and the two air pipes are connected to the air source through a three-way joint.

[0009] The dust cage includes a filter bag, which lies horizontally between the front bracket and the rear bracket. One end of the filter bag is fixed to the mounting ring of the front bracket, and the other end of the filter bag is fixed to the valve plate of the rear bracket. A plurality of anti-deformation units are provided on the periphery of the filter bag. The plurality of anti-deformation units are arranged at intervals along the axis of the filter bag to control the deformation of the filter bag.

[0010] Any of the anti-deformation units includes a positioning ring, which is sleeved on the filter bag. The positioning ring and the filter bag are fixedly connected by a plurality of buckles evenly distributed in the circumferential direction.

[0011] The bypass back-blowing dust bag type dust collection unit includes an air inlet box and an air outlet box, the inner cavity of the air inlet box is divided into a dust collecting chamber and a back-blowing chamber, the air outlet box is arranged at the bottom of the air inlet box, a dust bag is provided in the air outlet box, the dust bag inlet is connected with the dust collecting chamber, a vertically arranged dust hopper is passed through the bottom of the air outlet box, and the dust bag outlet is connected with the dust compactor through the dust hopper; a plurality of back-blowing pipes uniformly distributed along the circumference of the dust bag are provided in the air outlet box, the inlet of the back-blowing pipe is connected with the back-blowing chamber, a plurality of back-blowing outlets uniformly distributed along the axial direction of the back-blowing pipe are respectively provided on the back-blowing pipe, and the back-blowing outlet faces the dust bag; the air outlet An air outlet is provided on the box; the dust collecting chamber and the back-blowing chamber are connected to the two outlets of the three-way pipe, and a valve core is provided in the three-way pipe, and the valve core controls the three-way pipe to be alternately connected with the dust collecting chamber and the back-blowing chamber; when the three-way pipe is connected with the dust collecting chamber, the dust collecting gas flows into the dust collecting chamber and the dust collecting bag through the dust collecting fan, the dust collecting air duct and the three-way pipe, and the dust is blocked on the inner wall of the dust collecting bag, and the air flows out from the air outlet after passing through the mesh of the dust collecting bag; when the three-way pipe is connected with the back-blowing chamber, the back-blowing gas enters the back-blowing chamber and the back-blowing air duct through the three-way pipe, and the back-blowing gas is blown toward the dust collecting bag, thereby blowing away the dust on the inner wall of the dust collecting bag and shaking it off into the dust compactor.

[0012] The dust collecting chamber is provided with a dust collecting air inlet, the back blowing chamber is provided with a back blowing air inlet, and the two outlets of the three-way pipeline are respectively connected to the dust collecting air inlet and the back blowing air inlet.

[0013] The valve core includes a valve plate, and a swing shaft is provided in the three-way pipeline. One end of the valve plate is sleeved on the swing shaft, and one end of the swing shaft is connected to the cylinder extension rod through a driving component. The cylinder drives the driving component to move, driving the swing shaft and the valve plate to swing, so that the valve plate alternately blocks the two outlets of the three-way pipeline.

[0014] Compared with the existing technology, the advantages of this utility model are: high-efficiency explosion-proof honeycomb dust filter,

[0015] 1. During dust cleaning, the dust collection fan does not stop, and the exhaust air from the dust bag is instantly switched to the outside of the dust bag through the three-way pipe. There is no air blowing inside the dust bag, and the dust cleaning operation can be carried out immediately. The dust collection airflow passes through the reverse air outlet, blowing away the short lint attached to the inner wall of the dust bag and the dust in the mesh, thereby reducing the time required for dust cleaning and improving the efficiency and effect of dust cleaning.

[0016] 2. The filter bag is fixed to the positioning ring by a buckle, so that the deformation of the filter bag is controlled within a certain range, preventing the filter bag from producing serious concave or convex waist drum shapes, and improving the service life of the filter bag.

[0017] 3. When the chassis is deformed by negative pressure, the middle section of the nozzle and the wool felt sealing ring can slide around the outer periphery of the core sleeve, avoiding the situation where the wool felt sealing ring is squeezed, deformed and flanging, resulting in sealing failure, thereby increasing the service life of the wool felt sealing ring.

[0018] 4. The trolley drive mechanism propels the trolley left and right along the trolley track, driving the suction nozzles to remove dust from different rows of dust cage units. The trolley drive mechanism propels the trolley forward and backward within the trolley, moving slowly when approaching a dust cage unit and rapidly away from it. This reduces the time it takes to exit the unit, shortens the cleaning cycle, and improves dust handling capacity. The suction nozzles, controlled by a nozzle reduction motor, rotate unidirectionally, preventing the growth of lint in the filter media and extending the life of the dust cage filter bags.

[0019] 5. The dust collection fan is an explosion-proof centrifugal fan. The motors in the gantry, trolley, and nozzle reducers are all high-efficiency, dust-proof, and explosion-proof three-phase asynchronous motors. The dust collection bag and filter bag are made of antistatic material. The belt used in the trolley drive is antistatic. Therefore, this application has excellent safety and explosion-proof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a high-efficiency explosion-proof honeycomb dust filter according to an embodiment of the utility model;

[0021] Figure 2 for Figure 1 BB view in;

[0022] Figure 3 This is a top view of a high-efficiency explosion-proof honeycomb dust filter according to an embodiment of the present utility model;

[0023] Figure 4 for Figure 3 AA view in;

[0024] Figure 5 This is a schematic diagram of the installation of the wool felt sealing ring;

[0025] Figure 6This is a side view of a high-efficiency explosion-proof honeycomb dust filter according to an embodiment of the present utility model;

[0026] Figure 7 It is a three-dimensional diagram of the variable speed one-way dust collection mechanism;

[0027] Figure 8 It is a front view of the variable speed one-way dust collection mechanism;

[0028] Figure 9 for Figure 8 DD view in;

[0029] Figure 10 This is the installation diagram of the trolley walking roller assembly;

[0030] Figure 11 for Figure 7 A top view of

[0031] Figure 12 This is a schematic diagram of a bypass back-flushing dust bag type dust collection unit;

[0032] Figure 13 for Figure 12 Middle CC view;

[0033] Figure 14 This is a schematic diagram of the installation of the three-way pipeline and valve core;

[0034] Figure 15 Schematic diagram of the valve core;

[0035] Figure 16 This is a schematic diagram of a dust cage;

[0036] Figure 17 This is the installation cross-section diagram of the filter bag and the positioning ring;

[0037] Figure 1: Chassis, 2: Access door, 3: Bypass back-blowing dust bag type dust collection unit, 3.1: Air inlet box, 3.2: Back-blowing air duct, 3.3: Air outlet box, 3.4: Back-blowing air outlet, 3.5: Dust bag, 3.6: Dust hopper, 3.7: Dust compactor, 3.8: Discharge port gland, 3.9: Valve core, 3.91: Shaft sleeve, 3.92: Swing shaft, 3.93: Valve plate, 3.94: Fixing bolt, 3.95: Connecting rod, 3.96: Shaft connecting rod, 3.97: Cylinder, 3.10: T-shaped pipe, 3.11: Back-blowing chamber, 3.12: Dust collection chamber, 3.13: Back-blowing air inlet, 3.14: Dust collection air inlet, 4: Dust collection fan, 5: External fan, 6: External suction duct, 7: Connecting elbow, 8: Dust collection external connecting pipe, 9: First-stage pre-filter chamber, 10 dust filter, 11 suction arm, 12 core sleeve, 13 suction nozzle middle section, 14 first-stage compactor, 15 suction arm transmission mechanism, 16 dust collection internal connecting pipe, 17 variable speed one-way dust collection mechanism, 17.1 suction box interface, 17.2 suction box, 17.3 fixed plate, 17.4 trolley track, 17.5 trolley reduction motor, 17.6 trolley, 17.7 trolley, 17.8 trolley reduction motor, 17.9 suction nozzle reduction motor, 17.10 suction nozzle, 17.11 trolley travel roller, 17.12 air nozzle, 17.13 fixed bracket, 17.14 quick-release straight-through air pipe connector, 17.15 air pipe, 17.16 three-way connector, 17.17 pulse valve, 17.18 first gear chain drive, 17.19 Second gear chain drive, 17.20 trolley travel roller, 17.21 limit switch, 17.22 driven sprocket, 17.23 driving sprocket, 17.24 chain, 18 dust cage, 18.1 front bracket, 18.2 mounting ring, 18.3 positioning ring, 18.4 filter bag, 18.5 rear bracket, 18.6 sealing plate, 18.7 buckle belt, 19 secondary dust filter chamber, 20 clean air chamber, 21 fixing screw, 22 wool felt sealing ring, 23 rubber ring, 24 pressure plate. DETAILED DESCRIPTION

[0038] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0039] like Figure 1 、 2As shown in Figures 3, 4, and 6, the high-efficiency explosion-proof honeycomb dust filter in this embodiment includes a chassis 1, which is provided with a first-level pre-filter chamber 9, a second-level dust filter chamber 19, and a clean air chamber 20. Three inspection doors 2 are hinged on the sides of the chassis 1, and the inspection doors correspond to the first-level pre-filter chamber, the second-level dust filter chamber, and the clean air chamber, respectively. A vertically arranged disc-type dust filter 10 is provided in the first-level pre-filter chamber 9, and a plurality of dust cage units arranged in parallel are provided in the second-level dust filter chamber 19. Air containing short fibers and dust enters the first-level pre-filter chamber, and the dust filter pre-filters the air containing short fibers and dust. Some fibers and dust are intercepted on the dust filter. The pre-filtered air enters the second-level dust filter chamber, and the dust cage unit performs a secondary filtration on the air. All fibers and dust are intercepted in the dust cage unit. Then, the clean air flows into the clean air chamber and is discharged. The primary pre-filter chamber houses a primary dust collection unit, one end of which faces the dust filter 10 and the other end of which is connected to a primary compactor. This unit removes fiber debris from the dust filter and then feeds into a primary compactor 14, which separates the fibers from air and compacts the debris for discharge. A variable-speed, one-way dust collection mechanism 17 is housed within the secondary dust filter chamber 19. This mechanism can slowly approach several dust cage units for dust removal and then rapidly move away from them, effectively removing dust and fiber from the units while reducing the time it takes to exit the cages. The outlet of the variable speed one-way dust suction mechanism 17 is connected to the inlet of the dust collecting fan 4 through the dust collecting internal connecting pipe 16, and the outlet of the dust collecting fan 4 is connected to the bypass back-blowing dust cleaning bag type dust collecting unit 3 through the dust collecting external connecting pipe 8. The dust collecting fan 4 flows the fiber dust sucked out by the variable speed one-way dust suction mechanism 17 into the bypass back-blowing dust cleaning bag type dust collecting unit 3 through the dust collecting internal connecting pipe 16 and the dust collecting external connecting pipe 8, and then separates and compresses it before discharging it.

[0040] like Figure 5As shown, the above-mentioned first-level dust collection unit includes a horizontally arranged core sleeve 12, and a suction arm 11 is provided on the core sleeve 12. The inlet of the suction arm 11 faces the dust filter 10, and the outlet of the suction arm 11 is connected to the inner cavity of the core sleeve 12. The outlet of the core sleeve 12 is connected to one end of the middle section 13 of the suction nozzle. A wool felt sealing ring 22 with a trumpet-shaped cross-section is provided at the joint between the outlet of the core sleeve 12 and the middle section 13 of the suction nozzle. The center of the wool felt sealing ring 22 has a set hole. The wool felt sealing ring 22 is arranged horizontally, and one side of the large end of the wool felt sealing ring 22 is attached to one end of the middle section 13 of the suction nozzle. An annular pressure plate 24 is pressed on the other side of the large end of the wool felt sealing ring 22, so that the wool felt sealing ring 22 is arranged between the pressure plate 24 and one end of the middle section 13 of the suction nozzle. The three are fixedly connected by a fixing screw 21. The small end of the wool felt sealing ring 22 is sleeved around the outer periphery of the core sleeve 12 outlet, so that the outer periphery of the core sleeve 12 outlet is located within the wool felt sealing ring 22. The wool felt sealing ring 22 seals the joint between the nozzle upper section 13 and the core sleeve 12. The inner cavity of the core sleeve 12 and the inner cavity of the nozzle upper section 13 form a suction channel; the other end of the nozzle upper section 13 is fixed to the primary pre-filter chamber and connected to the external fan 5 through the external suction pipe 6. When the external fan 5 is started, the inner cavity of the nozzle upper section 13 is negatively pressurized, and the suction arm transmission component 15 drives the core sleeve 12 to rotate, which in turn drives the suction arm to rotate. The rotating suction arm sucks the fibers on the surface of the dust filter 10 out through the suction channel.

[0041] One end of the wool felt sealing ring 22 is fixed to the end of the middle section 13 of the suction nozzle, and the other end is sleeved on the outer periphery of the core sleeve 12 outlet. When the core sleeve 12 and the suction arm 11 rotate, the wool felt sealing ring 22 is fixed, and the outer periphery of the core sleeve 12 outlet rotates within the wool felt sealing ring 22. The above-mentioned wool felt sealing ring 22 is sleeved with a matching rubber ring 23, which on the one hand improves the sealing effect, and on the other hand prevents the fibers in the chassis from being adsorbed and hooked on the wool felt sealing ring, and also prevents the fibers sucked from the suction arm from being entangled, thereby reducing fiber entanglement damage and improving the fiber recycling rate. When the chassis is deformed by negative pressure, the middle section of the suction nozzle and the wool felt sealing ring can slide on the outer periphery of the core sleeve, thereby preventing the wool felt sealing ring from being squeezed, deformed, and flanging, which may cause sealing failure, thereby improving the service life of the wool felt sealing ring.

[0042] like Figure 7 、 8As shown, the variable-speed, one-way dust collection mechanism 17 includes a suction box 17.2 equipped with a plurality of suction nozzles 17.10, which are evenly spaced vertically along the suction box 17.2. A dust cage unit includes a plurality of vertically spaced dust cages 18, with the number and mounting position of the suction nozzles 17.10 matching the dust cages 18 in the same row. One end of each suction nozzle 17.10 passes through the suction box 17.1 and is provided with a nozzle transmission mechanism, while the other end of each suction nozzle 17.10 is tilted downward. The top of the suction box 17.2 is bolted to the bottom of a trolley 17.7. Trolley 17.7 is equipped with two trolley running roller assemblies arranged left and right, each trolley running roller assembly comprising two trolley running rollers 17.20 spaced apart front and back. Trolley 17.7 is mounted within a carriage 17.6, which has symmetrically arranged trolley tracks along its inner wall, and on which the trolley running rollers 17.20 are mounted. The trolley drive device drives the trolley running rollers 17.20 to move slowly forward or quickly backward along the trolley track, driving the suction box 17.2 and the suction nozzle 17.10 to move synchronously, so that the suction nozzle 17.10 slowly approaches the dust cage unit to vacuum, or quickly moves away from the dust cage unit, saving time in exiting the dust cage unit. A fixed plate 17.3 is provided on the top of the trolley 17.6, and two large trolley running rollers 11 are provided on the fixed plate 17.3. The trolley running rollers 17.11 are located on the trolley track. The trolley drive device drives the trolley running rollers to move left and right along the trolley track, driving the suction box 17.2 and the suction nozzle 17.10 to move left and right synchronously, and then move to the next row of dust cage units. A nozzle reduction motor 17.9 is mounted above the suction box 17.2. Multiple suction nozzles are connected to the nozzle reduction motor via a nozzle transmission mechanism. The nozzle reduction motor drives the nozzle transmission mechanism to rotate unidirectionally, causing the suction nozzle 17.10 to rotate unidirectionally. When the suction nozzle enters the dust cage unit, it rotates to vacuum the dust cage unit. When the suction nozzle exits the dust cage unit, the suction nozzle 17.10 stops rotating.

[0043] A suction box interface 17.1 is provided at the bottom of the suction box 17.2, and the suction box interface 17.1 is connected to the dust collecting fan 4, so that the dust collected in the suction box is discharged to the bypass back-blowing dust bag type dust collecting unit.

[0044] The trolley drive device includes a trolley reduction motor 17.5, which is connected to one trolley travel roller 17.11 via a first gear chain drive 17.18. The two trolley travel rollers 17.11 are connected via a second gear chain drive 17.19. The trolley reduction motor 17.5 drives the first gear chain drive 17.18 to rotate, driving one trolley travel roller 17.11 to move along the trolley track. The rotation of one trolley travel roller drives the second gear chain drive 17.19 to move the other trolley travel roller along the trolley track.

[0045] like Figure 10As shown, the trolley drive device includes a trolley reduction motor 17.8, and the trolley travel rollers on the same side are connected by a belt. The trolley reduction motor drives one trolley travel roller group to rotate, driving the belt and the other trolley travel roller group to rotate.

[0046] like Figure 9 As shown, the nozzle transmission mechanism includes a plurality of driven sprockets 17.22, each of which is disposed at the end of a nozzle 17.10 located within the suction box 17.2. A driving sprocket 17.23 is disposed on the output shaft of a nozzle reduction motor 17.9, and the driving sprocket 17.23 and the driven sprocket 17.22 are connected by a chain 17.24. When the nozzle reduction motor 17.9 rotates, the driving sprocket 17.23, the chain 17.24, and the driven sprocket 17.22 rotate in one direction, thereby driving the nozzles in one direction, thereby achieving synchronous unidirectional rotation of multiple nozzles.

[0047] The trolley track is provided with a plurality of spaced limit switches 17.21, and the distance between two adjacent limit switches 17.21 matches the distance between two adjacent dust cage units. When the trolley moves to the limit switch, the suction nozzle corresponds to the dust cage unit at the corresponding position, and then the dust cage unit is vacuumed.

[0048] like Figure 16 、 17 As shown, the dust cage 18 includes a frameless filter bag 18.4, which lies horizontally between a front bracket 18.1 and a rear bracket 18.5. One end of the filter bag 18.4 is fixed to the mounting ring of the front bracket 18.1, and the other end of the filter bag 18.4 is fixed to the sealing plate 18.6 of the rear bracket. A plurality of positioning rings 18.3 are arranged around the outer periphery of the filter bag 18.4 at intervals along the axial direction of the filter bag. The positioning rings are fixedly connected to the filter bag via a plurality of buckles 18.7 uniformly distributed along the outer periphery of the positioning rings. This controls the deformation of the filter bag within a certain range and prevents the filter bag from developing a serious concave or convex waist drum shape.

[0049] The filter bag is fixed to the positioning ring by a buckle, so that the deformation of the filter bag is controlled within a certain range, preventing the filter bag from producing serious concave or convex waist drum shapes, and improving the service life of the filter bag.

[0050] like Figure 11 As shown, a trolley track self-cleaning device is also provided on the fixed plate 17.3, and the trolley track self-cleaning device performs self-cleaning on the trolley track.

[0051] The trolley track self-cleaning device includes two symmetrically arranged air nozzles 17.12, fixed brackets 17.13 are respectively provided on both sides of the fixed plate 17.3, and quick-release straight-through air pipe connectors 17.14 are respectively provided on the fixed brackets 17.13. One end of the quick-release straight-through air pipe connector 17.14 is connected to the air nozzle 17.12, and the air outlet of the air nozzle 17.12 is respectively facing the trolley track. The other end of the quick-release straight-through air pipe connector 17.14 is connected to the air pipe 17.15. The two air pipes 17.15 are connected to the air source through a three-way connector 17.16. When the trolley running roller moves left and right along the trolley track, it drives the air nozzle to move left and right synchronously, and the clean gas in the air source is diverted to the two air pipes, and then sprayed onto the trolley track through the two air nozzles, thereby cleaning the trolley track.

[0052] A pulse valve 17.17 is provided on the air source, which is used to control whether the air source is diverted to the two air pipes, thereby regularly cleaning the trolley track.

[0053] When the nozzle approaches the dust cage unit, it moves slowly (dust collection). The trolley feed speed is automatically adjusted according to the dust cage resistance value under PLC instructions. When the dust cage resistance value is between 50Pa and 300Pa, the trolley feed speed is 16.5 to 9.5mm / s, ensuring cleaning results and preventing nozzle clogging, meeting adaptability to different application conditions. The nozzle is controlled by the nozzle reduction motor to rotate unidirectionally. When the nozzle moves away from the dust cage unit, it moves rapidly (exit), the nozzle reduction motor stops, the trolley reduction motor reverses, and the trolley exits at a speed of 54mm / s. After the set exit time is reached, the trolley exit speed drops to 16.5mm / s and stops at its original position, ensuring the stability of the dust collection mechanism and shortening the dust collection cycle.

[0054] The trolley drive mechanism propels the trolley left and right along the trolley track, driving the suction nozzles to remove dust from different rows of dust cage units. The trolley drive mechanism propels the trolley forward and backward within the trolley, moving slowly when approaching a dust cage unit and rapidly away from it. This reduces the time it takes to exit the unit, shortens the cleaning cycle, and improves dust handling capacity. The suction nozzles, controlled by a nozzle reduction motor, rotate unidirectionally, preventing the formation of lint in the filter media and extending the life of the dust cage filter bags.

[0055] like Figure 12 、 13As shown, the above-mentioned bypass back-blowing dust bag type dust collecting unit 3 includes an air inlet box 3.1 and an air outlet box 3.3. The inner cavity of the air inlet box 3.1 is divided into a dust collecting chamber 3.12 and a back-blowing chamber 3.11 by a partition. A dust collecting air inlet 3.14 is provided on the dust collecting chamber 3.12, and a back-blowing air inlet 3.13 is provided on the back-blowing chamber 3.11. The dust collecting air inlet 3.14 and the back-blowing air inlet 3.13 are connected to the two outlets of the three-way pipe 3.10, and one inlet of the three-way pipe 3.10 is connected to the dust collecting fan 4 through the dust collecting external connecting pipe 8. An adjustable valve core 3.9 is provided in the three-way pipe, and the valve core 9 controls the alternating communication between the three-way pipe 3.10 and the dust collecting chamber 3.12 and the back-blowing chamber 3.11. An outlet air box 3.3 is located at the bottom of the air inlet box 3.1. A dust bag 3.5 is housed within the outlet air box 3.3. The inlet of the dust bag 3.5 is connected to the dust collection chamber 3.12. A vertically arranged dust hopper 3.6 is located at the bottom of the outlet air box 3.3. The inlet of the dust hopper 3.6 is connected to the outlet of the dust bag 3.5, and the outlet of the dust hopper 3.6 is connected to a dust compactor 3.7. The outlet air box 3.3 is also equipped with multiple vertically arranged back-blowing air pipes 3.2. These back-blowing air pipes 3.1 are evenly distributed circumferentially around the dust bag 3.5. The inlets of these back-blowing air pipes 3.2 are each connected to the back-blowing chamber 3.11. The back-blowing air pipes 3.1 have multiple back-blowing air outlets 3.4 evenly distributed axially, each facing the dust bag 3.5. An air outlet is provided on the side of the air outlet box 3.3. When collecting dust, the three-way pipe is connected with the dust collecting chamber, and the collected gas flows into the dust collecting chamber 3.12 through the dust collecting fan 4, the dust collecting air duct 8, and the three-way pipe 3.10. The dust is blocked by the dust collecting bag 3.5 and adheres to the inner wall of the dust collecting bag. The air passes through the mesh of the dust collecting bag and flows out from the air outlet. After collecting dust for a period of time, the position of the valve core 3.9 is changed to make the three-way pipe 3.10 connected with the back-blowing chamber 3.11. The back-blowing gas enters the back-blowing chamber and the back-blowing air duct through the three-way pipe, and is blown toward the dust collecting bag through the back-blowing air outlet. The short fluff attached to the inner wall of the dust collecting bag and the dust in the mesh are blown away and shaken off. The dust falls into the dust compactor through the dust hopper, is pressed tightly, and is discharged by opening the discharge port pressure cover.

[0056] like Figure 14 、 15 As shown, valve core 3.9 includes valve plate 3.93. A swing shaft 3.92 is positioned within three-way pipe 3.10. One end of valve plate 3.93 is sleeved onto swing shaft 3.92 and secured to swing shaft 3.92 via sleeve 3.91. One end of swing shaft 3.92 is connected to the extension rod of cylinder 3.97 via a drive assembly. The cylinder body of cylinder 3.97 is secured within three-way pipe 3.10 via fixing bolts 3.94. The extension rod of cylinder 3.97 actuates the drive assembly, which in turn causes the swing shaft and valve plate to swing, causing the valve plate to alternately block the two outlets of the three-way pipe. This means that changes in the position of the valve plate control the alternating connection between the three-way pipe and the dust collection chamber 3.12 and the backflush chamber 3.11.

[0057] The driving assembly includes a connecting rod 3.95 and a shaft connecting rod 3.96. One end of the connecting rod 3.95 is fixed to the swing shaft 3.92, and the shaft connecting rod 3.96 is fixed to the cylinder extension rod. A fixing pin is provided at the other end of the shaft connecting rod to connect them.

[0058] During dust cleaning, the dust collection fan does not stop, and the exhaust air from the dust bag is instantly switched to the outside of the dust bag through the three-way pipe. There is no air blowing inside the dust bag, and the dust cleaning operation can be carried out immediately. The dust collection airflow passes through the reverse air outlet, blowing away the short lint attached to the inner wall of the dust bag and the dust trapped in the mesh, thereby reducing the time required for dust cleaning and improving the efficiency and effect of dust cleaning.

[0059] The variable-speed one-way dust suction mechanism and the bypass back-blowing dust bag-type dust collection unit operate in conjunction with each other. When the suction nozzle unit slowly approaches the dust cage unit for dust collection, the exhaust air of the dust collection fan enters the dust collection chamber; when the suction nozzle unit quickly moves away from the dust cage unit, the exhaust air of the dust collection fan enters the back-blowing chamber.

[0060] The dust collection fan is an explosion-proof centrifugal fan. The motors in the trolley, carriage, and nozzle reducers are all high-efficiency, dust-proof, and explosion-proof three-phase asynchronous motors. The dust collection bag and filter bag are made of antistatic material. The belt used in the trolley drive is an antistatic belt. Therefore, this application has excellent safety and explosion-proof performance, with an explosion-proof rating of Ex tbIIIB T130°C Db.

[0061] In addition to the above embodiments, the present invention also includes other implementation methods. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of protection of the claims of the present invention.

Claims

1. High-efficiency explosion-proof honeycomb dust filter, characterized by: The machine comprises a chassis, wherein a first-level pre-filter chamber, a second-level dust filter chamber and a clean air chamber are arranged in the chassis, the first-level pre-filter chamber is provided with a vertically arranged dust filter net, the second-level dust filter chamber is provided with a plurality of dust cage units arranged in parallel, the air containing short fibers and dust enters the first-level pre-filter chamber, the dust filter net pre-filters the air containing short fibers and dust, the pre-filtered air enters the second-level dust filter chamber, the dust cage unit performs a second filtration on the air, and then the clean air flows into the clean air chamber and is discharged; a first-level dust collection unit is provided in the first-level pre-filter chamber, one end of the first-level dust collection unit faces the dust filter net, and the other end is connected to the first-level compressor, the first-level dust collection unit sucks the dust on the dust filter net The remaining fibers are mixed and enter the first-level compressor, which separates the fibers and air, and the mixed fibers are compressed and discharged; a variable-speed one-way dust suction mechanism is provided in the second-level dust filter chamber, and the outlet of the variable-speed one-way dust suction mechanism is connected to the inlet of the dust collecting fan through the dust collecting inner connecting pipe, and the outlet of the dust collecting fan is connected to the bypass back-blowing dust bag-type dust collecting unit through the dust collecting outer connecting pipe; the variable-speed one-way dust suction mechanism can slowly approach several dust cage units for dust removal, and then quickly move away from the dust cage units; the fiber dust sucked out by the variable-speed one-way dust suction mechanism flows into the bypass back-blowing dust bag-type dust collecting unit through the dust collecting inner connecting pipe, the dust collecting fan, and the dust collecting outer connecting pipe, and then is separated, compressed, and then discharged.

2. The high-efficiency explosion-proof honeycomb dust filter according to claim 1, characterized in that: The first-level dust suction unit includes a horizontally arranged core sleeve, a suction arm is provided on the core sleeve, the suction arm inlet faces the dust filter, and the suction arm outlet is connected to the inner cavity of the core sleeve; a suction nozzle middle section is provided in the first-level pre-filter chamber, one end of the suction nozzle middle section is connected to the core sleeve outlet, and a trumpet-shaped wool felt sealing ring is provided at the junction of the core sleeve outlet and the suction nozzle middle section, one end of the wool felt sealing ring is fixed to one end of the suction nozzle middle section through a fixing part, and the other end of the wool felt sealing ring is sleeved on the outer periphery of the core sleeve; the inner cavity of the core sleeve and the inner cavity of the suction nozzle middle section form a suction channel; the other end of the suction nozzle middle section is fixed to the box body and connected to the external fan through an external suction pipe.

3. The high-efficiency explosion-proof honeycomb dust filter according to claim 1, characterized in that: The variable speed one-way dust suction mechanism includes a suction box, and a suction nozzle unit is provided on the suction box; the suction box is fixed to the bottom of the trolley, and the trolley walking roller groups are symmetrically arranged on both sides of the trolley, the trolley is arranged in the trolley, and the trolley tracks are symmetrically provided on the inner wall of the trolley, and the trolley walking roller group is arranged on the trolley track. The trolley driving device drives the trolley walking roller group to move forward slowly and / or backward quickly along the trolley track, driving the suction box and the suction nozzle unit to move synchronously, so that the suction nozzle unit slowly approaches the dust cage unit to perform dust collection, or Quickly move away from the dust cage unit; a fixed plate is provided on the top of the trolley, a trolley walking roller group is provided on the fixed plate, a trolley track is set in the dust removal box, the trolley walking roller group is provided on the trolley track, and the trolley driving device drives the trolley walking roller group to move left and right along the trolley track, driving the suction box and the suction nozzle unit to move left and right synchronously, so that the suction nozzle unit moves to the next row of dust cage units; a suction nozzle driving device is provided on the suction box, and the suction nozzle driving device drives the suction nozzle unit to rotate unidirectionally, thereby sucking dust from the dust cage unit.

4. The high-efficiency explosion-proof honeycomb dust filter according to claim 3, characterized in that: The suction nozzle unit includes a plurality of suction nozzles, and the plurality of suction nozzles are arranged vertically at intervals along the suction box; any of the dust cage units includes a plurality of dust cages arranged vertically at intervals, and the suction nozzles are matched with the anti-deformation dust cages in the same row; the suction nozzle driving device includes a suction nozzle reduction motor and a suction nozzle transmission mechanism, and the suction nozzle reduction motor is arranged on the upper part of the suction box; the suction nozzle transmission mechanism includes a plurality of driven sprockets, and the driven sprockets are respectively arranged at the ends of the suction nozzles located in the suction box, and a driving sprocket is arranged on the output shaft of the suction nozzle reduction motor, and the driving sprocket and the driven sprocket are connected by a chain.

5. The high-efficiency explosion-proof honeycomb dust filter according to claim 3, characterized in that: The fixed plate is also provided with a trolley track self-cleaning device, which includes two symmetrically arranged air nozzles. Fixed brackets are respectively provided on both sides of the fixed plate, and air pipe joints are respectively provided on the fixed brackets. One end of the air pipe joint is connected to the air nozzle, and the air outlet of the air nozzle is respectively facing the trolley track; the other end of the air pipe joint is connected to the air pipe, and the two air pipes are connected to the air source through a three-way joint.

6. The high-efficiency explosion-proof honeycomb dust filter according to claim 5, characterized in that: The dust cage includes a filter bag, which lies horizontally between the front bracket and the rear bracket. One end of the filter bag is fixed to the mounting ring of the front bracket, and the other end of the filter bag is fixed to the valve plate of the rear bracket. A plurality of anti-deformation units are provided on the periphery of the filter bag. The plurality of anti-deformation units are arranged at intervals along the axis of the filter bag to control the deformation of the filter bag.

7. The high-efficiency explosion-proof honeycomb dust filter according to claim 6, characterized in that: Any of the anti-deformation units includes a positioning ring, which is sleeved on the filter bag. The positioning ring and the filter bag are fixedly connected by a plurality of buckles evenly distributed in the circumferential direction.

8. The high-efficiency explosion-proof honeycomb dust filter according to claim 1, characterized in that: The bypass back-blowing dust bag type dust collection unit includes an air inlet box and an air outlet box, the inner cavity of the air inlet box is divided into a dust collecting chamber and a back-blowing chamber, the air outlet box is arranged at the bottom of the air inlet box, a dust bag is provided in the air outlet box, the dust bag inlet is connected with the dust collecting chamber, a vertically arranged dust hopper is passed through the bottom of the air outlet box, and the dust bag outlet is connected with the dust compactor through the dust hopper; a plurality of back-blowing pipes uniformly distributed along the circumference of the dust bag are provided in the air outlet box, the inlet of the back-blowing pipe is connected with the back-blowing chamber, a plurality of back-blowing outlets uniformly distributed along the axial direction of the back-blowing pipe are respectively provided on the back-blowing pipe, and the back-blowing outlet faces the dust bag; the air outlet An air outlet is provided on the box; the dust collecting chamber and the back-blowing chamber are connected to the two outlets of the three-way pipe, and a valve core is provided in the three-way pipe, and the valve core controls the three-way pipe to be alternately connected with the dust collecting chamber and the back-blowing chamber; when the three-way pipe is connected with the dust collecting chamber, the dust collecting gas flows into the dust collecting chamber and the dust collecting bag through the dust collecting fan, the dust collecting air duct and the three-way pipe, and the dust is blocked on the inner wall of the dust collecting bag, and the air flows out from the air outlet after passing through the mesh of the dust collecting bag; when the three-way pipe is connected with the back-blowing chamber, the back-blowing gas enters the back-blowing chamber and the back-blowing air duct through the three-way pipe, and the back-blowing gas is blown toward the dust collecting bag, thereby blowing away the dust on the inner wall of the dust collecting bag and shaking it off into the dust compactor.

9. The high-efficiency explosion-proof honeycomb dust filter according to claim 8, characterized in that: The dust collecting chamber is provided with a dust collecting air inlet, the back blowing chamber is provided with a back blowing air inlet, and the two outlets of the three-way pipeline are respectively connected to the dust collecting air inlet and the back blowing air inlet.

10. The high-efficiency explosion-proof honeycomb dust filter according to claim 8, characterized in that: The valve core includes a valve plate, and a swing shaft is provided in the three-way pipeline. One end of the valve plate is sleeved on the swing shaft, and one end of the swing shaft is connected to the cylinder extension rod through a driving component. The cylinder drives the driving component to move, driving the swing shaft and the valve plate to swing, so that the valve plate alternately blocks the two outlets of the three-way pipeline.

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