A high efficiency low resistance filter and filtering method thereof

Abstract

The present invention discloses a high-efficiency, low-resistance filter and a filtering method thereof, which relates to the field of gas filtering technology, and includes a vertical cylinder and a conical mesh cylinder. A support frame is fixedly provided at the bottom of the vertical cylinder, a top cover is fixedly provided at the top of the vertical cylinder by bolts, an air outlet pipe is fixedly provided at the top of the top cover, a side sealing box is vertically fixedly provided at the side of the top cover, a bottom ring is fixedly provided at the bottom of the vertical cylinder by bolts, and a recovery bucket is fixedly provided at the bottom of the bottom ring. The main structure of the filtering structure of the present invention is a conical mesh cylinder structure that is narrow at the top and wide at the bottom. Compared with a flat filter mesh disk structure, the conical mesh cylinder structure increases the filtering area and improves the filtering efficiency when the gas passes through. The conical design makes it easier for waste dust to fall under the action of gravity, thereby reducing the possibility of blockage. The narrow at the top and wide at the bottom shape helps to form a stable airflow path, optimizing the flow and separation effect of the gas.

Description

Technical Field

[0001] The invention relates to the technical field of gas filtering, and in particular to a high-efficiency low-resistance filter and a filtering method thereof. Background Art

[0002] A gas filter is a device used to remove solid particles, aerosols, microorganisms and harmful gases from the air or other gases. It is widely used in industries such as industry, medical care, and electronic manufacturing to ensure the cleanliness and safety of the air. There are many types and materials of filters. Different filter types are selected according to the type and concentration of pollutants to be filtered to ensure the best filtering effect and performance.

[0003] After long-term use, the waste dust intercepted by the filter structure of the gas filter in the prior art will gradually adhere to the outer wall of the filter structure, causing the filter flow of the entire filter to gradually decrease. Therefore, the filter structure needs to be cleaned regularly and the filter structure needs to be removed from the filter. Repeated disassembly and assembly of the filter structure will lead to reduced sealing of the entire filter and reduced life of corresponding parts. Even though there are gas-based filters with back-blowing functions on the market, the cleaning speed of the filter structure is slow and the effect is not ideal, especially for some waste dust that is attached to the filter structure in the form of nodules. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that after the filtering structure of the gas filter in the prior art is used for a long time, the intercepted waste dust will gradually adhere to the outer wall of the filtering structure, causing the filtering flow of the entire filter to gradually decrease, so that the filtering structure of the filter needs to be cleaned regularly, and the filtering structure needs to be disassembled from the filter. Multiple disassembly and assembly of the filtering structure will lead to reduced sealing of the entire filter and reduced life of corresponding parts. Even though there are gas-based filters with back-blowing functions on the market, the cleaning speed of their filtering structures is slow and the effect is not ideal, especially for some waste dust that is attached to the filtering structure in the form of nodules and blocks. Therefore, a high-efficiency, low-resistance filter and a filtering method thereof are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-efficiency and low-resistance filter comprises a vertical cylinder and a conical mesh cylinder, wherein a support frame is fixedly arranged at the bottom of the vertical cylinder, a top sealing cover is fixedly arranged at the top of the vertical cylinder by bolts, an air outlet pipe is fixedly arranged at the top of the top sealing cover, a side sealing box is vertically fixedly arranged on the side of the top sealing cover, a bottom ring is fixedly arranged at the bottom of the vertical cylinder by bolts, a recovery bucket is fixedly arranged at the bottom of the bottom ring, a sewage discharge pipe is fixedly arranged at the center position of the bottom of the recovery bucket, a bottom fixing ring is fixedly arranged at the bottom of the inner cavity of the vertical cylinder, a support plate is fixedly arranged at the top of the bottom fixing ring of the vertical cylinder, a circular array of communication holes is arranged on the top of the support plate, a supporting and oscillating component for supporting the conical mesh cylinder or driving the conical mesh cylinder to oscillate and unload dust is arranged at the center position of the top of the support plate, the vertical cylinder is rotatably connected with a back-blowing pipe above the supporting and oscillating component, one end of the back-blowing pipe extending into the inner cavity of the vertical cylinder is fixedly connected with a back-blowing disk, back-blowing holes are symmetrically opened at the bottom of the back-blowing disk, and a switching component for controlling the entire filter to perform gas operation or back-blowing and cleaning the filter structure is arranged in the inner cavity of the side sealing box.

[0007] Optionally, the conical mesh cylinder is a structure that is narrow at the top and wide at the bottom, a top ring edge is provided at the top of the conical mesh cylinder, a vertical ring edge is fixedly provided at the bottom of the conical mesh cylinder, and the side surface of the vertical ring edge is fixed to the inner ring wall of the bottom fixed ring by bolts.

[0008] Optionally, the supporting oscillation assembly includes a pulling column, a supporting spring, an extending electromagnet, and a bottom flange. The extending electromagnet is vertically fixed at the bottom center of the back-blowing plate. The bottom of the pulling column is fixed with a top flange. The top circular array of the top ring edge has mounting holes. The top circular array of the top flange has vertical bolts threaded into it. The vertical bolts pass through the mounting holes and are threaded into the bottom flange.

[0009] Optionally, the switching assembly includes a flipping gear, a flipping gear rod, an electric push rod, a switching column, and a horizontal rod. A back-blowing machine is fixedly installed on the outer side of the side sealing box. A controller is fixedly installed on the side sealing box below the back-blowing machine. A back-blowing pipe is movably inserted into the air outlet end of the back-blowing machine. A flipping gear is fixedly installed on the outer wall of one end of the back-blowing pipe extending out of the outer wall of the vertical cylinder.

[0010] Optionally, the flip gear is stably meshed with a flip gear rod in the vertical direction, and docking rings are fixedly provided on the upper and lower surfaces of one end of the horizontal rod. The docking ring at the top of one end of the horizontal rod is fixedly connected to the bottom end of the flip gear rod, and the docking ring at the bottom of one end of the horizontal rod is fixedly connected to the output end of the electric push rod. The electric push rod is vertically fixed on the top of the support plate, and the support plate is horizontally fixed on the inner cavity of the side sealing box.

[0011] Optionally, the top of the horizontal rod away from the docking ring is fixed to the top of the switching column by a positioning bolt, a positioning column is fixed at a non-center position on the top of the switching column, a positioning hole is provided on the horizontal rod above the positioning column, the sewage discharge pipe includes a vertical section and a horizontal section, and the switching column passes through the air intake pipe and the sewage discharge pipe in sequence along the vertical direction.

[0012] Optionally, the switching column is provided with a first connecting hole and a second connecting hole in sequence along the vertical direction, and the diameters of the first connecting hole and the second connecting hole are the same as the inner diameters of the sewage discharge pipe and the air intake pipe.

[0013] Optionally, a central rubber disk is fixedly installed on the top of the pulling column after passing through the center of the bottom of the support disk. The bottom of the central rubber disk is fixedly connected to one end of the support spring, and the other end of the support spring is fixedly connected to the top of the support disk. The center of the central rubber disk and the extending end of the extending electromagnet are on the same axis.

[0014] Optionally, a buffer column is fixedly provided at the middle position of the top of the horizontal rod, and a micro switch is fixedly provided above the buffer column in the side sealing box, and the micro switch is connected to the back-blowing air control circuit.

[0015] A high-efficiency and low-resistance filtering method comprises the following steps:

[0016] S1: Filtration, the electric push rod is in a retracted state, the supporting spring is in its original state, the entire conical mesh cylinder is in a propped-up state, the backflush plate is in a vertical state and does not separate the inlet pipe and the outlet pipe, the first connecting hole is inside the inlet pipe, the second connecting hole is at the bottom of the sewage discharge pipe, the inlet pipe is in an open state, the sewage discharge pipe is in a closed state, the gas passing through the inlet pipe is sucked by the inverted conical mesh cylinder, the waste dust in the air is intercepted at the bottom of the conical mesh cylinder, and the clean air is discharged through the exchange hole and the outlet pipe.

[0017] S2: Backflush cleaning. The controller controls the electric push rod to extend. On the one hand, the electric push rod drives the flip gear to rotate through the flip gear rod at the top of the horizontal rod, thereby driving the backflush plate at one end of the backflush pipe to flip to a horizontal state. At this time, the backflush plate separates the air inlet pipe and the air outlet pipe, and the entire filter stops exhausting. On the other hand, the switching column is driven upward through the horizontal rod. At this time, the first connecting hole is above the air inlet pipe, and the second connecting hole is inside the sewage discharge pipe. The entire filter stops intake, and the sewage discharge pipe can begin to discharge waste dust. When the buffer column is pressed onto the microswitch, the backflush blower and the extending electromagnet are controlled to start at the same time, and exhaust is exhausted from the top of the conical mesh tube through the backflush holes of the backflush pipe and the backflush plate. The extending electromagnet continuously strikes the central rubber disk and intermittently compresses the support spring to accelerate the falling of dust at the bottom of the conical mesh tube. The dust is gathered in the recovery bucket and finally discharged from the sewage discharge pipe.

[0018] S3: Reset. The controller drives all the above components to reset, that is, the electric push rod is in a retracted state, the supporting spring is in an original state, the entire conical mesh cylinder is in a propped-up state, the backflush plate is in a vertical state and does not separate the air inlet pipe and the air outlet pipe, the first connecting hole is inside the air inlet pipe, the second connecting hole is at the bottom of the sewage discharge pipe, the air inlet pipe is in an open state, and the sewage discharge pipe is in a closed state.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The main structure of the filtration structure of the present invention is a conical mesh cylinder structure that is narrow at the top and wide at the bottom. Compared with the flat filter mesh disk structure, the conical mesh cylinder structure increases the filtration area and improves the filtration efficiency when the gas passes through. The conical design makes it easier for the waste dust to fall under the action of gravity, thereby reducing the possibility of blockage. The shape that is narrow at the top and wide at the bottom helps to form a stable airflow path and optimizes the gas flow and separation effect.

[0021] 2. The back-blowing cleaning structure of the present invention includes two core components, namely, a back-blowing blower and an extendable electromagnet. On the one hand, the back-blowing cleaning structure can use gas to back-blow and clean the above-mentioned conical mesh cylinder. On the other hand, the extendable electromagnet can continuously extend to knock the pulling column supporting the entire conical mesh cylinder, thereby shaking off the waste dust attached to the bottom of the conical mesh cylinder. The cleaning speed of the filtering structure is fast and the effect is relatively ideal, especially for some waste dust that is attached to the filtering structure in the form of nodules and blocks. The cleaning effect is particularly obvious.

[0022] 3. The backblowing cleaning structure of the present invention is fixed on the switching component. The switching component can control the entire filter to perform gas filtering work or backblowing cleaning work of the filtering structure. The switching component can automatically prevent air intake and exhaust from the filter when the entire filter is performing backblowing cleaning work on the filtering structure. Automatic blocking of air intake and air outlet ensures that the backblowing airflow focuses on cleaning the filtering structure, enhances the removal effect of waste dust, and avoids leakage of the backblowing airflow. In addition, blocking air intake and air outlet during the backblowing cleaning process prevents unfiltered gas and waste dust from entering the system or leaking out, thereby protecting the internal components of the filter and the external environment. Finally, the automatic control of the switching component ensures rapid switching between filtering and cleaning work, reduces downtime, and thus improves the overall operating efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 for Figure 1 Another perspective structural diagram of .

[0025] Figure 3 for Figure 2 Schematic diagram of the half-section structure.

[0026] Figure 4 It is a schematic diagram of the structure of the backflush component.

[0027] Figure 5 for Figure 3 Schematic diagram of the structure with the vertical cylinder removed.

[0028] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at A.

[0029] Figure 7 for Figure 1 Schematic diagram of the structure with the side sealing box and its connecting parts removed.

[0030] Figure 8 It is a schematic diagram of the structure of the drive interlocking component.

[0031] Fig. 9 for Figure 8 Schematic diagram of the local structure.

[0032] Fig.10 It is a schematic diagram of the connection structure between the conical mesh cylinder and the oscillation component.

[0033] Fig.11 for Fig.10 Schematic diagram of the structure viewed from above.

[0034] Fig.12 for Fig.11 Schematic diagram of the explosion structure.

[0035] Fig.13 It is a schematic diagram of the local structure of the conical mesh tube.

[0036] In the figure: 1. Top cover; 2. Blower; 3. Vertical cylinder; 4. Controller; 5. Support frame; 6. Exhaust pipe; 7. Side sealing box; 71. Support plate; 8. Bottom ring; 9. Recovery bucket; 10. Blower plate; 11. Support plate; 12. AC hole; 13. Blower pipe; 14. Extended electromagnet; 15. Blower hole; 16. Micro switch; 17. Electric push rod; 18. Flip gear; 19. Inlet pipe; 20. Discharge pipe; 21. Flip gear rod; 22. Horizontal rod; 220, docking ring; 221, buffer column; 23, switching column; 230, first connecting hole; 231, second connecting hole; 24, positioning bolt; 25, positioning hole; 26, positioning column; 27, center rubber disk; 28, supporting spring; 29, pulling column; 291, top flange; 2911, vertical bolt; 30, conical mesh cylinder; 301, top ring edge; 3010, mounting hole; 302, vertical ring edge; 31, bottom fixing ring; 32, bottom flange. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Reference Figure 1-13 A high-efficiency and low-resistance filter comprises a vertical cylinder 3 and a conical mesh cylinder 30. A support frame 5 is fixedly arranged at the bottom of the vertical cylinder 3. A top sealing cover 1 is fixedly arranged at the top of the vertical cylinder 3 by bolts. An air outlet pipe 6 is fixedly arranged on the top of the top sealing cover 1. A side sealing box 7 is vertically fixedly arranged on the side of the top sealing cover 1. A bottom ring 8 is fixedly arranged at the bottom of the vertical cylinder 3 by bolts. The conical mesh cylinder 30 is a structure that is narrow at the top and wide at the bottom. A top ring edge 301 is arranged at the top of the conical mesh cylinder 30, and a vertical ring edge 302 is fixedly arranged at the bottom of the conical mesh cylinder 30. The side of the vertical ring edge 302 is fixedly arranged on the inner ring wall of the bottom fixed ring 31 by bolts. The conical mesh cylinder 30 is woven with soft cloth, so the conical mesh cylinder 30 can be deformed by external force.

[0040] A recovery bucket 9 is fixedly arranged at the bottom of the bottom ring 8, a sewage discharge pipe 20 is fixedly arranged at the bottom center of the recovery bucket 9, a bottom fixed ring 31 is fixedly arranged at the bottom of the inner cavity of the vertical cylinder 3, a support plate 11 is fixedly arranged at the top of the bottom fixed ring 31 of the vertical cylinder 3, and a circular array of communication holes 12 are arranged on the top of the support plate 11. A supporting and oscillating component for supporting the conical mesh cylinder 30 or driving the conical mesh cylinder 30 to oscillate and unload dust is arranged at the center of the top of the support plate 11.

[0041] The supporting oscillation component includes a pulling column 29, a supporting spring 28, an extending electromagnet 14, and a bottom flange 32. The extending electromagnet 14 is vertically fixed at the bottom center of the backblowing plate 10. A top flange 291 is fixed at the bottom of the pulling column 29. The top circular array of the top ring edge 301 has mounting holes 3010. The top circular array of the top flange 291 is threaded with vertical bolts 2911. The vertical bolts 2911 pass through the mounting holes 3010 and are threaded into the bottom flange 32. The top flange 291 and the bottom flange 32 are used to fix the top of the entire conical mesh cylinder 30 and the pulling column 29.

[0042] The top of the pulling column 29 passes through the center of the bottom of the support plate 11 and is fixedly provided with a central rubber plate 27. The bottom of the central rubber plate 27 is fixedly connected to one end of a support spring 28. The other end of the support spring 28 is fixedly connected to the top of the support plate 11. The center of the central rubber plate 27 and the extending end of the extending electromagnet 14 are on the same axis. When the support spring 28 is at its original length, the support spring 28 props up the conical mesh tube 30 through the pulling column 29.

[0043] The vertical cylinder 3 is rotatably connected with a back-blowing pipe 13 above the supporting oscillation component. The back-blowing pipe 13 extends into the inner cavity of the vertical cylinder 3 and is fixedly connected with a back-blowing plate 10 at one end. Back-blowing holes 15 are symmetrically opened at the bottom of the back-blowing plate 10. The diameter of the back-blowing plate 10 is the same as the inner diameter of the vertical cylinder 3, and the position of the back-blowing plate 10 needs to be set at an appropriate position away from the center rubber plate 27 to avoid collision with the center rubber plate 27 when the back-blowing plate 10 rotates.

[0044] The extending electromagnet 14 is a common device in the prior art. When energized, the extending electromagnet 14 will extend. Since the extending electromagnet 14 is vertically fixed on the end face of the backflush plate 10, when the backflush plate 10 is in a vertical state, that is, the entire device is in a filtering function, the extending electromagnet 14 will rotate to a horizontal state and will not collide with the center rubber plate 27, thereby preventing the extending electromagnet 14 from accidentally hitting the center rubber plate 27 when the entire filter is performing a filtering function, causing the entire conical mesh tube 30 to be accidentally hit, causing the dust originally adsorbed and intercepted at the bottom of the conical mesh tube 30 to contaminate the air intake source.

[0045] The inner cavity of the side sealing box 7 is provided with a switching component for controlling the entire filter to perform gas operation or backwash cleaning of the filter structure. The switching component includes a flip gear 18, a flip gear rod 21, an electric push rod 17, a switching column 23, and a horizontal rod 22. A backwash blower 2 is fixedly provided on the outer side of the side sealing box 7. A controller 4 is fixedly provided under the backwash blower 2 of the side sealing box 7. A backwash pipe 13 is movably inserted into the air outlet end of the backwash blower 2. The backwash pipe 13 extends out of the outer wall of one end of the vertical cylinder 3 and a flip gear 18 is fixedly provided on the outer wall.

[0046] The flip gear 18 is stably meshed with the flip gear rod 21 in the vertical direction, and docking rings 220 are fixedly arranged on the upper and lower surfaces of one end of the horizontal rod 22. The docking ring 220 at the top of one end of the horizontal rod 22 is fixedly connected to the bottom end of the flip gear rod 21, and the docking ring 220 at the bottom of one end of the horizontal rod 22 is fixedly connected to the output end of the electric push rod 17. The electric push rod 17 is vertically fixed on the top of the support plate 71, and the support plate 71 is horizontally fixed on the inner cavity of the side sealing box 7.

[0047] The top of the end of the horizontal rod 22 away from the docking ring 220 is fixedly set on the top of the switching column 23 by a positioning bolt 24. A positioning column 26 is fixedly set at a non-center position on the top of the switching column 23. The horizontal rod 22 is provided with a positioning hole 25 above the positioning column 26. The sewage discharge pipe 20 includes a vertical section and a horizontal section. The switching column 23 passes through the air intake pipe 19 and the sewage discharge pipe 20 in sequence along the vertical direction. The positioning column 26 and the positioning hole 25 are set to position the first connecting hole 230 and the second connecting hole 231 of the switching column 23.

[0048] The switching column 23 is provided with a first connecting hole 230 and a second connecting hole 231 in sequence along the vertical direction. The diameters of the first connecting hole 230 and the second connecting hole 231 are the same as the inner diameters of the sewage discharge pipe 20 and the air intake pipe 19. A buffer column 221 is fixedly provided at the middle position on the top of the horizontal rod 22. A micro switch 16 is fixedly provided on the side sealing box 7 above the buffer column 221. The micro switch 16 is connected to the control circuit of the back-blowing machine 2. The control circuit of the extendable electromagnet 14 is connected in parallel with the control circuit of the back-blowing machine 2 and is finally connected to the controller 4. It should be supplemented that the controller 4 is started at a fixed time. When setting the controller 4, the filtering time and the back-blowing time need to be set.

[0049] The specific implementation steps and principles of the present invention are as follows:

[0050] In the initial state, the electric push rod 17 is in a retracted state, the supporting spring 28 is in an original state, and the entire conical mesh cylinder 30 is in a propped-up state. At this time, the back-blowing plate 10 is in a vertical state and does not separate the air inlet pipe 19 and the air outlet pipe 6. The first connecting hole 230 is inside the air inlet pipe 19, and the second connecting hole 231 is at the bottom of the sewage discharge pipe 20. The air inlet pipe 19 is in an open state, and the sewage discharge pipe 20 is in a closed state. The gas passing through the air inlet pipe 19 is sucked into the inverted conical mesh cylinder 30, and the waste dust in the air is intercepted at the bottom of the conical mesh cylinder 30, and the clean air is discharged through the exchange hole 12 and the air outlet pipe 6.

[0051] When the controller 4 reaches the set time, the controller 4 controls the electric push rod 17 to extend. On the one hand, the electric push rod 17 drives the flip gear 18 to rotate through the flip gear rod 21 at the top of the horizontal rod 22, thereby driving the backflush plate 10 at one end of the backflush pipe 13 to flip to a horizontal state. At this time, the backflush plate 10 separates the inlet pipe 19 and the outlet pipe 6, and the entire filter stops exhausting. On the other hand, the switching column 23 is driven to move upward through the horizontal rod 22. At this time, the first connecting hole 230 is above the inlet pipe 19, and the second connecting hole 231 is Inside the sewage discharge pipe 20, the entire filter stops taking in air, and the sewage discharge pipe 20 begins to discharge waste dust. When the buffer column 221 is pressed onto the microswitch 16, the back-blowing blower 2 and the extending electromagnet 14 are controlled to start at the same time, and exhaust is discharged from the top of the conical mesh tube 30 through the back-blowing hole 15 of the back-blowing pipe 13 and the back-blowing plate 10. The extending electromagnet 14 continuously strikes the central rubber disk 27, intermittently compresses the supporting spring 28, and accelerates the falling of dust at the bottom of the conical mesh tube 30. The dust is gathered by the recovery bucket 9 and finally discharged from the sewage discharge pipe 20.

[0052] When the cleaning time of the controller 4 is reached, the controller 4 drives all the above-mentioned components to reset, that is, the electric push rod 17 is in a retracted state, the supporting spring 28 is in an original state, and the entire conical mesh tube 30 is in a propped up state. At this time, the backblowing plate 10 is in a vertical state and does not separate the air inlet pipe 19 and the air outlet pipe 6. The first connecting hole 230 is inside the air inlet pipe 19, and the second connecting hole 231 is at the bottom of the sewage discharge pipe 20. The air inlet pipe 19 is in an open state, and the sewage discharge pipe 20 is in a closed state.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-efficiency, low-resistance filter, comprising a vertical cylinder (3) and a conical mesh cylinder (30), characterized in that: A support frame (5) is fixedly provided at the bottom of the vertical cylinder (3); a top sealing cover (1) is fixedly provided at the top of the vertical cylinder (3) by means of bolts; an air outlet pipe (6) is fixedly provided at the top of the top sealing cover (1); a side sealing box (7) is vertically fixedly provided on the side of the top sealing cover (1); a bottom ring (8) is fixedly provided at the bottom of the vertical cylinder (3) by means of bolts; a recovery bucket (9) is fixedly provided at the bottom of the bottom ring (8); a sewage discharge pipe (20) is fixedly provided at the center of the bottom of the recovery bucket (9); a bottom fixing ring (31) is fixedly provided at the bottom of the inner cavity of the vertical cylinder (3); a support plate (11) is fixedly provided at the top of the bottom fixing ring (31) of the vertical cylinder (3); and a circular array is provided on the top of the support plate (11) in an intersecting manner. A flow hole (12), a support and oscillation component for supporting the conical mesh cylinder (30) or driving the conical mesh cylinder (30) to oscillate and unload dust is arranged at the center position of the top of the support plate (11), the vertical cylinder (3) is rotatably connected to a backflush pipe (13) above the support and oscillation component, the backflush pipe (13) extends into the inner cavity of the vertical cylinder (3) and is fixedly connected to the backflush plate (10) at one end, the backflush plate (10) is symmetrically provided with backflush holes (15) at the bottom, the inner cavity of the side sealing box (7) is provided with a switching component for controlling the entire filter to perform gas operation or backflush cleaning of the filter structure, the conical mesh cylinder (30) is a structure that is narrow at the top and wide at the bottom, the top of the conical mesh cylinder (30) is provided with a top ring edge (301), the conical mesh cylinder ( 30) A vertical ring edge (302) is fixedly provided at the bottom, and the side of the vertical ring edge (302) is fixedly provided on the inner ring wall of the bottom fixed ring (31) by bolts. The support oscillation assembly includes a pulling column (29), a support spring (28), an extended electromagnet (14), and a bottom flange (32). The extended electromagnet (14) is vertically fixedly provided at the bottom center of the backflush plate (10). The bottom of the pulling column (29) is fixedly provided with a top flange (291). The top circular array of the top ring edge (301) has mounting holes (3010). The top circular array of the top flange (291) is screwed with vertical bolts (2911). The vertical bolts (2911) pass through the mounting holes (301 0) is screwed onto the bottom flange (32) after the thread is screwed into the bottom flange (32), the switching assembly comprises a flip gear (18), a flip gear rod (21), an electric push rod (17), a switching column (23), and a horizontal rod (22), the outer side surface of the side sealing box (7) is fixedly provided with a back-blowing blower (2), the side sealing box (7) is fixedly provided with a controller (4) below the back-blowing blower (2), a back-blowing pipe (13) is movably inserted into the air outlet end of the back-blowing blower (2), the back-blowing pipe (13) extends out of the outer wall of the vertical cylinder (3) and is fixedly provided with a flip gear (18), the flip gear (18) is stably meshed with the flip gear rod (21) in the vertical direction, and a docking ring (220) is fixedly provided on the upper and lower surfaces of one end of the horizontal rod (22),The docking ring (220) at the top of one end of the horizontal rod (22) is fixedly connected to the bottom end of the tilting gear rod (21); the docking ring (220) at the bottom of one end of the horizontal rod (22) is fixedly connected to the output end of the electric push rod (17); the electric push rod (17) is vertically fixedly arranged on the top of the support plate (71); the support plate (71) is horizontally fixedly arranged in the inner cavity of the side sealing box (7); the top of one end of the horizontal rod (22) away from the docking ring (220) is fixedly arranged on the top of the switching column (23) by a positioning bolt (24); a positioning column (26) is fixedly arranged at a non-central position on the top of the switching column (23); the horizontal rod (22) is provided with a positioning hole (25) above the positioning column (26); the sewage discharge pipe (20) includes a vertical section and a water In the flat section, the switching column (23) passes through the air intake pipe (19) and the sewage discharge pipe (20) in sequence in the vertical direction. The switching column (23) is provided with a first connection hole (230) and a second connection hole (231) in sequence in the vertical direction. The diameters of the first connection hole (230) and the second connection hole (231) are the same as the inner diameters of the sewage discharge pipe (20) and the air intake pipe (19). The top end of the pulling column (29) passes through the center of the bottom of the support plate (11) and is fixedly provided with a central rubber plate (27). The bottom of the central rubber plate (27) is fixedly connected to one end of a support spring (28). The other end of the support spring (28) is fixedly connected to the top of the support plate (11). The center of the central rubber plate (27) and the extended end of the extended electromagnet (14) are on the same axis.

2. A high efficiency and low resistance filter according to claim 1, characterized in that: A buffer column (221) is fixedly provided at the middle position of the top of the horizontal rod (22), and a micro switch (16) is fixedly provided on the side sealing box (7) above the buffer column (221), and the micro switch (16) is connected to the control circuit of the back-blowing air (2).

3. A high efficiency and low resistance filtering method, used for a high efficiency and low resistance filter as claimed in claim 2, characterized in that: The following steps are involved: S1: Filtration, the electric push rod (17) is in a retracted state, the support spring (28) is in an original state, the entire conical mesh cylinder (30) is in a propped-up state, the backflush plate (10) is in a vertical state and does not separate the air inlet pipe (19) and the air outlet pipe (6), the first connecting hole (230) is inside the air inlet pipe (19), the second connecting hole (231) is at the bottom of the sewage discharge pipe (20), the air inlet pipe (19) is in an open state, the sewage discharge pipe (20) is in a closed state, the gas passing through the air inlet pipe (19) is sucked into the inverted bucket-shaped conical mesh cylinder (30), the waste dust in the air is intercepted at the bottom of the conical mesh cylinder (30), and the clean air is discharged through the exchange hole (12) and the air outlet pipe (6); S2: Backflush cleaning. The controller (4) controls the electric push rod (17) to extend. On the one hand, the electric push rod (17) drives the flip gear (18) to rotate through the flip gear rod (21) at the top of the horizontal rod (22), thereby driving the backflush plate (10) at one end of the backflush pipe (13) to flip to a horizontal state. At this time, the backflush plate (10) separates the air inlet pipe (19) and the air outlet pipe (6), and the entire filter stops exhausting air. On the other hand, the switching column (23) is driven to move upward through the horizontal rod (22). At this time, the first connection hole (230) is above the air inlet pipe (19), and the second connection hole (231) is at the discharge port. Inside the dirt pipe (20), the entire filter stops taking in air, and the dirt discharge pipe (20) starts to discharge waste dust. When the buffer column (221) is pressed onto the micro switch (16), the back-blowing blower (2) and the extending electromagnet (14) are controlled to start at the same time, and exhaust is discharged from the top of the conical net cylinder (30) through the back-blowing pipe (13) and the back-blowing hole (15) of the back-blowing plate (10). The extending electromagnet (14) continuously strikes the central rubber plate (27), intermittently compresses the support spring (28), and accelerates the falling of dust at the bottom of the conical net cylinder (30). The dust is collected by the recovery bucket (9) and finally discharged from the dirt discharge pipe (20); S3: Reset. The controller (4) drives all components to reset, that is, the electric push rod (17) is in a retracted state, the support spring (28) is in an original state, and the entire conical mesh cylinder (30) is in a propped-up state. At this time, the backflush plate (10) is in a vertical state and does not separate the air inlet pipe (19) and the air outlet pipe (6). The first connecting hole (230) is inside the air inlet pipe (19), the second connecting hole (231) is at the bottom of the sewage discharge pipe (20), the air inlet pipe (19) is in an open state, and the sewage discharge pipe (20) is in a closed state.

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