Efficient anti-explosion honeycomb type dust filter

Abstract

The invention 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 invention relates to a high-efficiency explosion-proof honeycomb dust filter, belonging to the technical field of honeycomb dust removal. Background Art

[0002] Honeycomb dust collector is an air filtering device that performs secondary filtration, separation, filtration and removal of fiber dust emitted during the textile process. At present, honeycomb dust collectors have the following shortcomings: 1. The dust collection cycle is long; 2. The friction of the filter material is large when the suction nozzle is reversed, the filter material is easy to be compacted, and the dust concentration in the air after filtration is high; 3. The dust removal method has almost no effect on powdery fine dust. Fine dust adheres to the mesh of the nylon mesh bag. The dust removal effect of scraper stirring and vibration shaking is not good, and the dust removal time is long and the efficiency is low. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-efficiency explosion-proof honeycomb dust filter with compact structure, convenient operation, reduced dust suction and cleaning cycles, improved dust handling capacity, increased service life of filter bags, and improved dust cleaning efficiency and effect.

[0004] The technical solution adopted by the present invention to solve the above-mentioned 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 chassis, a vertically arranged dust filter net is arranged in the first-level pre-filter chamber, and a plurality of dust cage units arranged in parallel are arranged in the second-level filter chamber, 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 suction unit is arranged in the first-level pre-filter chamber, one end of the first-level dust suction unit faces the dust filter net, and the other end is connected to a first-level pressing unit The first-level dust suction unit sucks away the fiber impurities left on the dust filter net and enters the first-level compressor, the first-level compressor separates the fiber 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-cleaning 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-cleaning 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.

[0005] The first-level dust suction unit includes a horizontally arranged core sleeve, a suction arm is arranged 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 arranged 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 arranged at the joint between 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 an air 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 air suction pipe.

[0006] The variable speed one-way dust suction mechanism comprises a suction box, on which a suction nozzle unit is arranged; the suction box is fixed to the bottom of the trolley, and trolley travel roller groups are symmetrically arranged on both sides of the trolley, the trolley is arranged in the large trolley, and trolley tracks are symmetrically arranged on the inner wall of the large trolley, and the trolley travel roller group is arranged on the trolley track, and the trolley driving device drives the trolley travel 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 for dust suction, or Quickly move away from the dust cage unit; a fixed plate is arranged on the top of the cart, a cart walking roller group is arranged on the fixed plate, a cart track is set up in the dust removal box, the cart walking roller group is arranged on the cart track, and the cart driving device drives the cart walking roller group to move left and right along the cart 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 arranged on the suction box, and the suction nozzle driving device drives the suction nozzle unit to rotate unidirectionally, thereby dusting the dust cage unit.

[0007] The suction nozzle unit includes a plurality of suction nozzles, and the plurality of suction nozzles are arranged at vertical intervals along the suction box; any of the dust cage units includes a plurality of dust cages arranged at vertical intervals, and the suction nozzles are matched with 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 at 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 outlets of the air nozzles are respectively facing the trolley track; the other ends of the air pipe joints are respectively connected to air pipes, 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 a front bracket and a rear bracket, one end of the filter bag is fixed to a mounting ring of the front bracket, and the other end of the filter bag is fixed to a valve plate of the rear bracket. A plurality of anti-deformation units are arranged on the periphery of the filter bag, and 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 comprises a positioning ring, which is sleeved on the filter bag, and the positioning ring and the filter bag are fixedly connected by a plurality of buckles uniformly distributed in the annular direction.

[0011] The bypass back-blowing dust-bag type dust collection unit comprises 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 arranged in the air outlet box, the dust bag inlet is connected with the dust collecting chamber, a vertically arranged dust collecting hopper is penetrated through the bottom of the air outlet box, and the dust bag outlet is connected with the dust compactor through the dust collecting hopper; a plurality of back-blowing air pipes uniformly distributed along the circumferential direction of the dust bag are arranged in the air outlet box, the back-blowing air pipe inlet is connected with the back-blowing chamber, a plurality of back-blowing air outlets uniformly distributed along the axial direction of the back-blowing air pipe are respectively arranged on the back-blowing air pipe, and the back-blowing air 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 with two outlets of the three-way pipeline, and a valve core is provided in the three-way pipeline, and the valve core controls the three-way pipeline to be alternately connected with the dust collecting chamber and the back-blowing chamber; when the three-way pipeline 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 pipeline, 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 pipeline 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 pipeline, 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 with 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 prior art, the advantages of the present invention are: high-efficiency explosion-proof honeycomb dust filter, 1. When cleaning dust, the dust collecting fan does not stop, and the exhaust air of the dust collecting fan is instantly switched from the inside of the dust collecting bag to the outside of the dust collecting bag through the three-way pipe. There is no air blowing in the dust collecting bag, and the dust cleaning action can be performed immediately. The dust collecting air flows through the reverse air outlet to blow away and shake off the short fluff attached to the inner wall of the dust collecting bag and the dust in the mesh, which reduces the time required for dust cleaning and improves the cleaning efficiency and effect.

[0015] 2. The filter bag is fixed on 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 having a serious concave waist drum shape or a convex waist drum shape, thereby increasing the service life of the filter bag.

[0016] 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 wool felt sealing ring from being squeezed, deformed and flanging, resulting in sealing failure, thereby increasing the service life of the wool felt sealing ring.

[0017] 4. The trolley drive device drives the trolley to move left and right along the trolley track. The movement of the trolley drives the suction nozzle to remove dust from different rows of dust cage units; the trolley drive device drives the trolley to move forward and backward in the trolley, moving slowly when approaching the dust cage unit and moving quickly when away from the dust cage unit, thereby reducing the time to exit the dust cage unit, reducing the dust cleaning cycle, and improving the dust handling capacity. The suction nozzle is controlled by the nozzle reduction motor to rotate in one direction, avoiding plush filter material and increasing the service life of the dust cage filter bag.

[0018] 5. The dust collecting fan is an explosion-proof centrifugal fan. The motors in the trolley reduction motor, the trolley reduction motor and the nozzle reduction motor are all high-efficiency dust explosion-proof three-phase asynchronous motors. The dust collecting bag and the filter bag are made of antistatic materials. The belt used in the trolley drive device is an antistatic belt. Therefore, this application has good safety and explosion-proof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of a high-efficiency explosion-proof honeycomb dust filter according to an embodiment of the present invention; Figure 2 for Figure 1 BB view in; Figure 3 A top view of a high-efficiency explosion-proof honeycomb dust filter according to an embodiment of the present invention; Figure 4 for Figure 3 AA view in; Figure 5 This is a schematic diagram of the installation of a wool felt sealing ring; Figure 6 A side view of a high-efficiency explosion-proof honeycomb dust filter according to an embodiment of the present invention; Figure 7 It is a three-dimensional diagram of a variable speed one-way dust collection mechanism; Figure 8It is a front view of the variable speed one-way dust suction mechanism; Fig. 9 for Figure 8 DD view in; Fig.10 This is the installation diagram of the trolley walking roller assembly; Fig.11 for Figure 7 A top view of Fig.12 It is a schematic diagram of a bypass back-blowing dust bag type dust collection unit; Fig.13 for Fig.12 Middle CC view; Fig.14 This is a schematic diagram of the installation of the three-way pipeline and the valve core; Fig.15 is a schematic diagram of the valve core; Fig.16 This is a schematic diagram of a dust cage; Fig.17 This is the installation cross-section diagram of the filter bag and the positioning ring; In the figure, 1 chassis, 2 inspection 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 dust outlet 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 three-way pipeline, 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 Primary pre-filter chamber, 10 dust filter, 11 suction arm, 12 core sleeve, 13 suction nozzle middle section, 14 primary clamp, 15 suction arm transmission mechanism, 16 dust collecting 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 walking roller, 17.12 air nozzle, 17.13 fixed bracket, 17.14 quick release straight-through air pipe joint, 17.15 air pipe, 17.16 three-way joint, 17.17 pulse valve, 17.18 first gear chain drive, 17.19 Second gear chain drive, 17.20 trolley walking 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

[0020] The present invention is further described in detail below with reference to the accompanying drawings.

[0021] 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, in which a primary pre-filter chamber 9, a secondary dust filter chamber 19, and a clean air chamber 20 are arranged. Three inspection doors 2 are hinged on the sides of the chassis 1, and the inspection doors correspond to the primary pre-filter chamber, the secondary dust filter chamber, and the clean air chamber, respectively. A vertically arranged disc-type dust filter net 10 is arranged in the primary pre-filter chamber 9, and a plurality of dust cage units arranged in parallel are arranged in the secondary dust filter chamber 19. The air containing short fibers and dust enters the primary pre-filter chamber, and the dust filter net pre-filters the air containing short fibers and dust. Part of the fibers and dust are intercepted on the dust filter net. The pre-filtered air enters the secondary dust filter chamber, and the dust cage unit performs secondary filtration on the air. The fibers and dust are all intercepted in the dust cage unit, and then the clean air flows into the clean air chamber and is discharged. A primary dust suction unit is provided in the primary pre-filter chamber, one end of which faces the dust filter net 10, and the other end of which is connected to a primary compressor. The primary dust suction unit removes the fiber impurities left on the dust filter net and enters the primary compressor 14. The primary compressor 14 separates the fiber and air, and compresses the fiber impurities and discharges them. A variable speed one-way dust suction mechanism 17 is provided in the secondary dust filter chamber 19. The variable speed one-way dust suction mechanism 17 can slowly approach several dust cage units for dust removal, and then quickly move away from the dust cage units, which can not only remove the dust and fibers in several dust cage units but also reduce the time to exit the dust cage. 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.

[0022] like Figure 5As shown, the primary dust collection unit includes a horizontally arranged core sleeve 12, on which a suction arm 11 is arranged, 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, and 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, and 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, and an annular pressing 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 pressing plate 24 and one end of the middle section 13 of the suction nozzle, and the three are fixedly connected by fixing screws 21. The small end of the wool felt sealing ring 22 is sleeved on the outer periphery of the core sleeve 12 outlet, so that the outer periphery of the core sleeve 12 outlet is arranged inside the wool felt sealing ring 22, and 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. Start the external fan 5, the inner cavity of the nozzle upper section 13 is negative pressure, the suction arm transmission component 15 drives the core sleeve 12 to rotate, and drives the suction arm to rotate, and the rotating suction arm sucks out the fibers on the mesh surface of the dust filter 10 through the suction channel.

[0023] 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 in the wool felt sealing ring 22. The wool felt sealing ring 22 is sleeved with a matching rubber ring 23, which improves the sealing effect on the one hand, and avoids the fibers in the chassis from being hooked on the wool felt sealing ring by adsorption, and also avoids the entanglement of the fibers sucked from the suction arm, reduces the entanglement damage of the fibers, and improves the recycling rate of the fibers. 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, avoiding the occurrence of sealing failure caused by the wool felt sealing ring being squeezed, deformed and flanging, thereby improving the service life of the wool felt sealing ring.

[0024] like Figure 7 , 8As shown, the above-mentioned variable speed one-way dust suction mechanism 17 includes a suction box 17.2, and a plurality of suction nozzles 17.10 are arranged uniformly vertically along the suction box 17.2. The dust cage unit includes a plurality of dust cages 18 arranged vertically at intervals, and the number and installation position of the suction nozzles 17.10 match the dust cages 18 in the same row. One end of the suction nozzle 17.10 is respectively penetrated by a suction box 17.1 and a suction nozzle transmission mechanism is provided, and the other end of the suction nozzle 17.10 is arranged obliquely downward. The top of the suction box 17.2 is fixed to the bottom of the trolley 17.7 by bolts, and the trolley 17.7 is provided with two trolley travel roller groups arranged left and right, and any trolley travel roller group includes two trolley travel rollers 17.20 arranged at intervals in front and back. The trolley 17.7 is arranged in the large trolley 17.6, and the inner wall of the large trolley 17.6 is symmetrically provided with trolley tracks, and the trolley travel rollers 17.20 are arranged on the trolley tracks. The trolley driving device drives the trolley running roller 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 suck dust, or quickly moves away from the dust cage unit, saving time to exit the dust cage unit. A fixed plate 17.3 is arranged on the top of the trolley 17.6, and two large trolley running rollers 11 are arranged on the fixed plate 17.3. The trolley running rollers 17.11 are arranged on the trolley track. The trolley driving 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 suction nozzle reduction motor 17.9 is arranged on the upper part of the suction box 17.2. A plurality of suction nozzles and the suction nozzle reduction motor are connected via a suction nozzle transmission mechanism. The suction nozzle reduction motor drives the suction nozzle transmission mechanism to rotate unidirectionally, so that the suction nozzle 17.10 rotates unidirectionally. When the suction nozzle enters the dust cage unit, it rotates and the suction nozzle vacuums the dust cage unit; when exiting the dust cage unit, the suction nozzle 17.10 stops rotating. 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 collected dust in the suction box is discharged to the bypass back-blowing dust bag type dust collecting unit.

[0025] The trolley driving device includes a trolley reduction motor 17.5, which is connected to a trolley travel roller 17.11 through a first gear chain transmission 17.18, and the two trolley travel rollers 17.11 are connected through a second gear chain transmission 17.19. The trolley reduction motor 17.5 drives the first gear chain transmission 17.18 to rotate, driving a trolley travel roller 17.11 to move along the trolley track, and the rotation of the trolley travel roller drives the second gear chain transmission 17.19, so that the other trolley travel roller moves along the trolley track.

[0026] like Fig.10As shown, the trolley driving device includes a trolley reduction motor 17.8, and the trolley travel rollers on the same side are connected by belts. The trolley reduction motor drives one trolley travel roller group to rotate, driving the belt and the other trolley travel roller group to rotate.

[0027] like Fig. 9 As shown, the nozzle transmission mechanism includes a plurality of driven sprockets 17.22, which are respectively arranged at the ends of the nozzles 17.10 located in the suction box 17.2, and a driving sprocket 17.23 is arranged on the output shaft of the 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 are driven to rotate unidirectionally, and then the nozzles are driven to rotate unidirectionally, so that multiple nozzles can rotate synchronously in one direction.

[0028] A plurality of spaced limit switches 17.21 are arranged on the trolley track, and the spacing between two adjacent limit switches 17.21 matches the spacing 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.

[0029] like Fig.16 , 17 As shown, the dust cage 18 comprises a frameless filter bag 18.4, which lies between the front bracket 18.1 and the 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 sleeved on the outer periphery of the filter bag 18.4, and the plurality of positioning rings 18.3 are arranged at intervals along the axial direction of the filter bag. The positioning ring is fixedly connected to the filter bag through a plurality of buckle belts 18.7 uniformly distributed along the outer periphery of the positioning ring, so as to control the deformation of the filter bag within a certain range and prevent the filter bag from having a serious inner concave waist drum shape or an outer convex waist drum shape.

[0030] The filter bag is fixed on 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 having a serious concave waist drum shape or a convex waist drum shape, thereby increasing the service life of the filter bag.

[0031] like Fig.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.

[0032] The trolley track self-cleaning device includes two symmetrically arranged air nozzles 17.12, fixed brackets 17.13 are respectively arranged on both sides of the fixed plate 17.3, and quick-release straight-through air pipe joints 17.14 are respectively arranged on the fixed brackets 17.13. One end of the quick-release straight-through air pipe joint 17.14 is connected to the air nozzle 17.12, and the air outlet of the air nozzle 17.12 faces the trolley track. The other end of the quick-release straight-through air pipe joint 17.14 is respectively connected to the air pipe 17.15, and the two air pipes 17.15 are connected to the air source through a three-way joint 17.16. When the trolley walking 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 to the trolley track through the two air nozzles, thereby cleaning the trolley track.

[0033] A pulse valve 17.17 is provided on the air source, and the pulse valve is used to control whether the air source is diverted to the two air pipes, thereby regularly cleaning the trolley track.

[0034] When the suction nozzle is close to the dust cage unit, it moves slowly (dust collection). The feeding speed of the trolley is automatically adjusted according to the dust cage resistance value under the PLC instruction. When the dust cage resistance value is between 50Pa and 300Pa, the feeding speed of the trolley is 16.5 to 9.5 mm / s, which ensures the cleaning effect and avoids nozzle blockage, and meets the adaptability of different application conditions. The suction nozzle is controlled by the nozzle reduction motor to rotate in one direction; when the suction nozzle is away from the dust cage unit, it moves quickly (exit), the nozzle reduction motor stops, the trolley reduction motor reverses and the trolley exit speed is 54 mm / s. After the exit setting time is reached, the trolley exit speed drops to 16.5 mm / s and stops after reaching the original position, which ensures the stability of the dust collection mechanism and shortens the dust collection cycle.

[0035] The trolley drive device drives the trolley to move left and right along the trolley track. The movement of the trolley drives the suction nozzle to remove dust from different rows of dust cage units. The trolley drive device drives the trolley to move forward and backward in the trolley. It moves slowly when approaching the dust cage unit and quickly when away from the dust cage unit, thereby reducing the time to exit the dust cage unit, reducing the dust cleaning cycle, and improving the dust handling capacity. The suction nozzle is controlled by the nozzle reduction motor to rotate in one direction, avoiding plush filter material and increasing the service life of the dust cage filter bag.

[0036] like Fig.12 , 13As shown, the bypass back-blowing dust-cleaning bag-type dust collecting unit 3 comprises 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 two outlets of a three-way pipe 3.10. An inlet of the three-way pipe 3.10 is connected to the dust collecting fan 4 through a dust collecting external connecting pipe 8. An adjustable valve core 3.9 is provided in the three-way pipe. The valve core 9 controls the three-way pipe 3.10 to be alternately connected with the dust collecting chamber 3.12 and the back-blowing chamber 3.11. An air outlet box 3.3 is provided at the bottom of the air inlet box 3.1, a dust bag 3.5 is provided in the air outlet box 3.3, the inlet of the dust bag 3.5 is connected to the dust collecting chamber 3.12, a vertically arranged dust hopper 3.6 is passed through the bottom of the air outlet 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 the dust compactor 3.7. A plurality of vertically arranged back-blowing air pipes 3.2 are also provided in the air outlet box 3.3, the plurality of back-blowing air pipes 3.1 are evenly distributed along the dust bag 3.5, the inlets of the back-blowing air pipes 3.2 are respectively connected to the back-blowing chamber 3.11, and a plurality of back-blowing air outlets 3.4 evenly distributed along the axial direction are provided on the back-blowing air pipe 3.1, and the back-blowing air outlets 3.4 are respectively 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 pipeline is connected with the dust collecting chamber, and the dust collecting 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 pipeline 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 connect the three-way pipeline 3.10 with the back-blowing chamber 3.11, and the back-blowing gas enters the back-blowing chamber and the back-blowing air duct through the three-way pipeline. The back-blowing gas is blown toward the dust collecting bag through the back-blowing air outlet, and 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 and is pressed tightly to open the discharge port cover for discharge.

[0037] like Fig.14 , 15 As shown, the valve core 3.9 includes a valve plate 3.93, and a swing shaft 3.92 is provided in the three-way pipeline 3.10. One end of the valve plate 3.93 is sleeved on the swing shaft 3.92, and the valve plate 3.93 is fixed to the swing shaft 3.92 through a sleeve 3.91. One end of the swing shaft 3.92 is connected to the extension rod of the cylinder 3.97 through a driving assembly, and the cylinder body of the cylinder 3.97 is fixed in the three-way pipeline 3.10 through a fixing bolt 3.94. The extension rod of the cylinder 3.97 drives the driving assembly to move, drives the swing shaft and the valve plate to swing, so that the valve plate alternately blocks the two outlets of the three-way pipeline, that is, the change in the position of the valve plate controls the three-way pipeline to be alternately connected with the dust collecting chamber 3.12 and the back-blowing chamber 3.11.

[0038] The driving assembly comprises a connecting rod 3.95 and an axle connecting rod 3.96. One end of the connecting rod 3.95 is fixed to the swing shaft 3.92. The axle connecting rod 3.96 is fixed to the cylinder extension rod. A fixing pin is provided at the other end of the axle connecting rod and the connecting rod to connect them.

[0039] During dust cleaning, the dust collecting fan does not stop, and the exhaust air of the dust collecting fan is instantly switched from the inside of the dust collecting bag to the outside of the dust collecting bag through the three-way pipe. There is no air blowing in the dust collecting bag, and the dust cleaning action can be performed immediately. The dust collecting air flows through the reverse air outlet to blow away and shake off the short fluff attached to the inner wall of the dust collecting bag and the dust in the mesh, which reduces the time required for dust cleaning and improves the cleaning efficiency and effect.

[0040] 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 suction, the exhaust air of the dust collecting fan enters the dust collecting chamber; when the suction nozzle unit quickly moves away from the dust cage unit, the exhaust air of the dust collecting fan enters the back-blowing chamber.

[0041] The dust collecting fan is an explosion-proof centrifugal fan, and the motors in the trolley reduction motor, the trolley reduction motor and the nozzle reduction motor are all high-efficiency dust explosion-proof three-phase asynchronous motors. The dust collecting bag and the filter bag are made of antistatic materials. The belt used in the trolley drive device is an antistatic belt. Therefore, the application has good safety and explosion-proof performance, and the explosion-proof grade is Ex tbIIIB T130℃ Db.

[0042] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. High-efficiency explosion-proof honeycomb dust filter, Features: The machine comprises a chassis, wherein a primary pre-filter chamber, a secondary dust filter chamber and a clean air chamber are arranged in the chassis, wherein a vertically arranged dust filter net is arranged in the primary pre-filter chamber, and a plurality of dust cage units arranged in parallel are arranged in the secondary filter chamber, and air containing short fibers and dust enters the primary pre-filter chamber, and the dust filter net pre-filters the air containing short fibers and dust, and the pre-filtered air enters the secondary dust filter chamber, and the dust cage unit performs secondary filtration on the air, and then the clean air flows into the clean air chamber and is discharged; a primary dust suction unit is arranged in the primary pre-filter chamber, and one end of the primary dust suction unit faces the dust filter net, and the other end is connected to a primary compressor, and the primary dust suction unit sucks the dust on the dust filter net The remaining fibers are mixed and enter the first-stage compressor, which separates the fibers and air, and the mixed fibers are compressed and discharged; the second-stage 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-cleaning 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-cleaning 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, Features: The first-level dust suction unit includes a horizontally arranged core sleeve, a suction arm is arranged 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 arranged 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 arranged at the joint between 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 an air 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 air suction pipe.

3. The high-efficiency explosion-proof honeycomb dust filter according to claim 1, Features: The variable speed one-way dust suction mechanism comprises a suction box, on which a suction nozzle unit is arranged; the suction box is fixed to the bottom of the trolley, and trolley travel roller groups are symmetrically arranged on both sides of the trolley, the trolley is arranged in the large trolley, and trolley tracks are symmetrically arranged on the inner wall of the large trolley, and the trolley travel roller group is arranged on the trolley track, and the trolley driving device drives the trolley travel 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 for dust suction, or Quickly move away from the dust cage unit; a fixed plate is arranged on the top of the cart, a cart walking roller group is arranged on the fixed plate, a cart track is set up in the dust removal box, the cart walking roller group is arranged on the cart track, and the cart driving device drives the cart walking roller group to move left and right along the cart 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 arranged on the suction box, and the suction nozzle driving device drives the suction nozzle unit to rotate unidirectionally, thereby dusting the dust cage unit.

4. A variable speed one-way dust suction mechanism according to claim 3, Features: The suction nozzle unit includes a plurality of suction nozzles, and the plurality of suction nozzles are arranged at vertical intervals along the suction box; any of the dust cage units includes a plurality of dust cages arranged at vertical intervals, and the suction nozzles are matched with 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 at 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, Features: 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 outlets of the air nozzles are respectively facing the trolley track; the other ends of the air pipe joints are respectively connected to air pipes, 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, Features: The dust cage includes a filter bag, which lies horizontally between a front bracket and a rear bracket, one end of the filter bag is fixed to a mounting ring of the front bracket, and the other end of the filter bag is fixed to a valve plate of the rear bracket. A plurality of anti-deformation units are arranged on the periphery of the filter bag, and 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, Features: Any of the anti-deformation units comprises a positioning ring, which is sleeved on the filter bag, and the positioning ring and the filter bag are fixedly connected by a plurality of buckles uniformly distributed in the annular direction.

8. The high-efficiency explosion-proof honeycomb dust filter according to claim 1, Features: The bypass back-blowing dust-bag type dust collection unit comprises 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 arranged in the air outlet box, the dust bag inlet is connected with the dust collecting chamber, a vertically arranged dust collecting hopper is penetrated through the bottom of the air outlet box, and the dust bag outlet is connected with the dust compactor through the dust collecting hopper; a plurality of back-blowing air pipes uniformly distributed along the circumferential direction of the dust bag are arranged in the air outlet box, the back-blowing air pipe inlet is connected with the back-blowing chamber, a plurality of back-blowing air outlets uniformly distributed along the axial direction of the back-blowing air pipe are respectively arranged on the back-blowing air pipe, and the back-blowing air 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 with two outlets of the three-way pipeline, and a valve core is provided in the three-way pipeline, and the valve core controls the three-way pipeline to be alternately connected with the dust collecting chamber and the back-blowing chamber; when the three-way pipeline 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 pipeline, 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 pipeline 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 pipeline, 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, Features: 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 with the dust collecting air inlet and the back blowing air inlet.

10. The high-efficiency explosion-proof honeycomb dust filter according to claim 8, Features: 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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