Dust filtering mechanism for nitrogen making machine

Abstract

A disclosed dust filtering mechanism for a nitrogen making machine comprises a base, the top of the base is fixedly connected with a pair of supporting frames, a box body is fixedly connected between the supporting frames, the box body is internally provided with a plurality of filtering cavities, the top of the box body is provided with a top cover, and the top of the top cover is provided with a first filtering assembly; the bottom of the box body is fixedly connected with a plurality of diversion bins, the side walls of the diversion bins are fixedly connected with a plurality of diversion pipes, the bottom of the diversion bins is provided with a second filtering assembly, a recycling assembly is arranged below the box body, the front end face of the box body is provided with a plurality of air outlet holes, and the front end face of the box body is provided with a third filtering assembly. Air can be shunted, so that the filtering effect is improved, the burden of the filtering mechanism is relieved, the self-cleaning function is achieved, dust particles are prevented from being attached and accumulated on the inner wall of the dust filtering structure, multi-stage filtering can be achieved, and all the filtering assemblies are designed in a modularized mode and can be rapidly detached and taken out so that regular maintenance and replacement can be conveniently conducted.

Description

Technical Field

[0001] The invention belongs to the technical field of dust filtration, and in particular relates to a dust filtration mechanism for a nitrogen generator. Background Art

[0002] Nitrogen generator is a kind of equipment used to produce high-purity nitrogen. It uses a specific process to process the incoming air to separate the oxygen and other impurities in it, thereby obtaining pure nitrogen. Nitrogen generator plays a vital role in social development, especially in many fields such as industry, food processing, petrochemical industry and medical treatment. Nitrogen generator plays a vital role in all walks of life in modern society. From promoting scientific and technological progress to ensuring food safety, to optimizing industrial production efficiency and environmental protection, its importance and influence are extensive and far-reaching.

[0003] Dust filtration is a key link in the nitrogen production process. Dust filtration can remove solid particles in the air to protect equipment, improve nitrogen purity, reduce maintenance frequency, ensure product quality and ensure system safety. Currently, nitrogen generators on the market are generally designed with corresponding dust filtration structures, but there are some defects and deficiencies that need to be improved: (1) The existing dust filtration structure lacks effective diversion measures. When air enters the dust filtration structure, it cannot quickly diffuse to the interior of the entire dust filtration structure, resulting in a short contact time between the air and the relevant filter components. Some air is discharged before it is fully filtered, resulting in a small amount of dust remaining in the discharged air. In addition, when the air flow rate entering at one time is large, it will also increase the burden on the filter components, thereby affecting the service life of the filter components; (2) The existing dust filtration structure... Although the structure can filter the dust in the air before nitrogen production, it lacks a self-cleaning function. After the dust is filtered, a small amount of solid particles such as dust often remain inside the dust filter structure. Over time, these dust particles will adhere to and accumulate on the inner wall of the dust filter structure, thereby affecting the subsequent normal operation of the dust filter structure; (3) In order to improve the dust filtration effect, the existing dust filter structure usually designs a multi-stage filter, but the multi-stage filter is often an integrated structure. After being installed and fixed inside the dust filter structure, it is difficult to disassemble and remove it, so it cannot be regularly maintained and replaced. Therefore, in view of the above problems, the dust filter mechanism for a nitrogen generator provided by the present invention is of great significance. Summary of the invention

[0004] The present invention provides a dust filtering mechanism for a nitrogen generator, which can introduce air into corresponding filter chambers through various diversion bins and diversion pipes to play a diversion role, and can quickly diffuse air to various filter chambers through multiple diversion pipes, and can fully contact the second filter components in each filter chamber, which not only effectively avoids dust residue caused by insufficient air filtering, but also greatly reduces the burden of the second filter component; the inner wall surface of each filter chamber can be reciprocated and brushed during the second filtration of the air through the self-cleaning component to achieve the self-cleaning function, thereby effectively avoiding dust or other solid particles from adhering to and accumulating on the inner wall of the filter chamber, and the impurity particles dropped during the cleaning process can be uniformly recovered through the recovery component for subsequent cleaning; the air can be filtered in multiple stages through the first filter component, the second filter component and the third filter component, so as to effectively remove dust impurities in the air, and the first filter component, the second filter component and the third filter component adopt a modular design, which can be quickly disassembled and taken out as needed for regular maintenance and replacement, and the problems in the background technology are solved in summary.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A dust filtering mechanism for a nitrogen generator of the present invention comprises a base, a pair of support frames are fixedly connected to the top of the base, a box is fixedly connected between the pair of support frames, a plurality of filter cavities are provided inside the box, the cross section of the filter cavity is circular, a guide block is fixedly connected to the inner wall of the bottom end thereof, the guide block is annular, and its top is an inclined end face, a plurality of slots are provided on the top end face of the box, and a top cover is installed on the top of the box, a plurality of plug rods are fixedly connected to the bottom of the top cover, and a plurality of studs are fixedly connected to the top of the top cover, each of the studs has a thread A nut matching with it is connected, a first filter assembly is arranged on the top of the top cover, and a plurality of shunt bins are fixedly connected to the bottom of the top cover, the shunt bins are cylindrical, and the top end thereof passes through the top cover, and a plurality of shunt pipes are fixedly connected to the side wall of the shunt bins, a second filter assembly is arranged on the bottom of each shunt bin, a recovery assembly is arranged below the box body, and a plurality of air outlets are opened on the front face of the box body, the number of the air outlets is the same as that of the filter chamber, and each of the air outlets is communicated with the corresponding filter chamber, and a third filter assembly is arranged on the front face of the box body;

[0007] The first filter assembly includes an air intake bin, the bottoms of both sides of the air intake bin are L-shaped and provided with a plurality of mounting holes, and the top of the air intake bin is provided with an air intake port, an air intake pipe is inserted into the air intake port, and the side walls of both sides of the air intake bin are provided with a plurality of first threaded holes, the first threaded holes are equidistantly distributed linearly along the width direction of the air intake bin, and each of the first threaded holes is threadedly connected with a first bolt matched therewith, and a plurality of filter elements are installed in the air intake bin, and both ends of each of the filter elements are provided with a positioning groove, and the diameter of the positioning groove is equal to the diameter of the first bolt;

[0008] The second filter assembly includes a motor, which is installed at the bottom of the diversion bin, and a plurality of filter racks are fixedly connected to the output shaft of the motor. The top and bottom of the filter rack are both L-shaped and have second threaded holes. Each of the second threaded holes is threadedly connected with a second bolt matched therewith, and each of the filter racks is respectively installed with a coarse filter screen and a self-cleaning assembly;

[0009] The self-cleaning assembly comprises a cleaning block, the top and bottom surfaces of the cleaning block are both provided with thread grooves matched with the second bolt, the side wall of the cleaning block is arc-shaped, and a layer of cleaning brushes is arranged on the arc-shaped surface of the cleaning block;

[0010] The recycling assembly includes an electric telescopic rod, which is mounted on a base, and a lifting plate is fixedly connected to the top of the output shaft thereof, and a plurality of recycling slots are placed on the lifting plate;

[0011] The third filter assembly includes an air outlet bin, which is fixedly connected to the front end surface of the box body, and its inner cavity is connected to each air outlet hole. An air outlet is provided on the front end surface of the air outlet bin, and a mounting groove is provided on the top of the air outlet bin. A fine filter is inserted into the mounting groove, and a mounting plate is fixedly connected to the top of the fine filter, and a handle is fixedly connected to the top of the mounting plate.

[0012] Furthermore, the support frame is L-shaped, and a plurality of reinforcing ribs are fixedly connected to its inner wall. The reinforcing ribs are triangular, and their tops are fixedly connected to the top inner wall of the support frame, and the reinforcing ribs are equidistantly linearly distributed along the width direction of the support frame.

[0013] Furthermore, the number of the insertion rods and the slots are the same, the diameters are equal, and the center of each insertion rod corresponds one-to-one with the center of each slot; the number of the mounting holes and the studs are the same, the diameters are equal, and each mounting hole corresponds one-to-one with the center of each stud.

[0014] Furthermore, a sealing plug is installed in the air inlet, the top edge of the sealing plug protrudes outward, the outer diameter of the bottom end is equal to the inner diameter of the air inlet, and a tube hole is opened in the center of the sealing plug, and a sealing ring is provided on the wall surface of the tube hole.

[0015] Furthermore, the number of the diversion bins is the same as that of the filter chambers, and each of the diversion bins is located directly above the corresponding filter chamber, one end of the diversion tube is connected to the inner cavity of the diversion bin, and the diversion tubes are distributed in an equidistant ring shape along the circumferential direction of the diversion bin.

[0016] Furthermore, the filter frames are distributed in an equidistant ring shape along the circumferential direction of the motor output shaft, and the top and bottom inner walls of each filter frame are provided with a card slot, and the top and bottom of each coarse filter screen are fixedly connected with a card block, the card block and the card slot are both rectangular, and the thickness of the card block is equal to the width of the card slot.

[0017] Furthermore, the width of the coarse filter screen is equal to the length of the filter frame, and a plurality of cushion blocks are arranged on both sides of the coarse filter screen.

[0018] Furthermore, the recovery grooves are circular and their number is the same as the filter chamber. Each of the recovery grooves is located directly below the corresponding filter chamber, and the outer diameter of the recovery groove is equal to the inner diameter of the guide block. The bottom of each of the recovery grooves is fixedly connected to a positioning rod, and a plurality of positioning holes are provided on the surface of the lifting plate. The number of the positioning holes is the same as that of the positioning rods, and the diameters are equal, and the center of each of the positioning holes corresponds one-to-one to the center of each positioning rod.

[0019] Furthermore, the installation groove is rectangular, and its length is equal to the length of the inner wall of the air outlet bin, and the length and thickness of the fine filter are respectively equal to the length and width of the installation groove.

[0020] A method for using a dust filter mechanism for a nitrogen generator is implemented by using the above-mentioned dust filter mechanism for a nitrogen generator, and comprises the following steps:

[0021] S1. The unfiltered air is introduced into the air intake chamber through the air intake pipe. After the air enters the air intake chamber, it will contact each filter element. At this time, the filter element can effectively remove the oil mist and moisture in the air to complete the first filtration of the air;

[0022] S2. After the air has been filtered for the first time, it can be introduced into the corresponding filter chamber through each shunt bin and shunt pipe, and then each motor is driven to drive each filter frame together with the coarse filter to rotate, so that the air in each filter chamber contacts each coarse filter respectively. At this time, the coarse filter can be used to remove large particles of impurities in the air to complete the second filtration of the air;

[0023] S3. When the motor drives the filter frame to rotate, the cleaning brushes on the surfaces of the cleaning blocks can scrape back and forth along the inner wall surfaces of the filter chambers to achieve a self-cleaning function, thereby effectively preventing dust or other solid particles from adhering to and accumulating on the inner wall of the filter chamber. The impurity particles that fall after being scraped by the cleaning brushes can fall into the corresponding recovery slots along the guide blocks, so that the impurity particles can be uniformly recovered through the recovery slots;

[0024] S4. After the air is filtered for the second time and enters the air outlet bin through each air outlet hole, it will contact the fine filter. At this time, the fine filter can be used to remove the fine particles remaining in the air to complete the third filtration of the air;

[0025] S5. The air after the third filtration can be exported to other core components of the nitrogen generator (such as the adsorption tower) through the air outlet to complete the subsequent nitrogen separation and purification work;

[0026] S6. Drive the electric telescopic rod to drive the lifting plate to move downward until the lifting plate leaves the bottom of the box body, and then each recovery tank can be removed from the lifting plate to subsequently clean the impurity particles in the recovery tank.

[0027] S7. The air intake bin can be removed from the top cover by unscrewing the nut. At this time, each first bolt can be unscrewed from the positioning groove, and each filter element can be taken out from the air intake bin so as to perform regular maintenance and replacement of each filter element.

[0028] S8. Each cleaning block can be removed from the filter frame by unscrewing the second bolt, so as to regularly clean the cleaning brush. After the cleaning block is removed from the filter frame, the coarse filter screen can be removed from the filter frame by sliding the card block, so as to regularly maintain and replace each coarse filter screen.

[0029] S9. The fine filter can be taken out from the air outlet bin by holding the handle and lifting it upwards so as to perform regular maintenance and replacement of the fine filter.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) When the dust filter mechanism for a nitrogen generator of the present invention is in use, air can be introduced into corresponding filter chambers through various diversion chambers and diversion pipes to play a diversion role. The multiple diversion pipes can allow air to quickly diffuse to various filter chambers and allow the air to fully contact with the second filter components in each filter chamber, which not only effectively avoids dust residue caused by insufficient filtration of the air, but also greatly reduces the burden on the second filter component;

[0032] (2) When the dust filter mechanism for a nitrogen generator in the present invention is in use, the inner wall surface of each filter cavity can be scraped back and forth by the self-cleaning component during the second filtration of the air to achieve the self-cleaning function, thereby effectively preventing dust or other solid particles from adhering to and accumulating on the inner wall of the filter cavity, and the impurity particles dropped during the cleaning process can be uniformly recovered by the recovery component for subsequent cleaning;

[0033] (3) When in use, the dust filtering mechanism for a nitrogen generator in the present invention can perform multi-stage filtration on the air through the first filter component, the second filter component and the third filter component, so as to effectively remove dust impurities in the air. The first filter component, the second filter component and the third filter component adopt a modular design and can be quickly disassembled and removed as needed to facilitate regular maintenance and replacement.

[0034] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0036] Figure 1 It is a structural schematic diagram of a dust filtering mechanism for a nitrogen generator of the present invention;

[0037] Figure 2 It is a structural schematic diagram of the base and the box body in the present invention;

[0038] Figure 3 It is a front cross-sectional view of the base and the box body in the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the top cover in the present invention;

[0040] Figure 5 It is a schematic structural diagram of the first filter assembly in the present invention;

[0041] Figure 6 A bottom view of the first filter assembly of the present invention;

[0042] Figure 7 It is a structural schematic diagram of the air intake bin in the present invention;

[0043] Figure 8 It is a structural schematic diagram of the filter element in the present invention;

[0044] Fig. 9It is a schematic diagram of the structure of the sealing plug in the present invention;

[0045] Fig.10 It is a structural schematic diagram of the second filter assembly in the present invention;

[0046] Fig.11 It is a schematic diagram of the structure of the filter frame in the present invention;

[0047] Fig.12 It is a schematic diagram of the structure of the coarse filter screen in the present invention;

[0048] Fig.13 It is a structural schematic diagram of the self-cleaning component in the present invention;

[0049] Fig.14 It is a schematic diagram of the structure of the recycling component in the present invention;

[0050] Fig.15 It is a structural schematic diagram of the lifting plate in the present invention;

[0051] Fig.16 It is a schematic diagram of the structure of the recovery tank in the present invention;

[0052] Fig.17 is a schematic structural diagram of the third filter assembly in the present invention;

[0053] Fig.18 It is a structural schematic diagram of the gas outlet bin in the present invention;

[0054] Fig.19 It is a structural schematic diagram of the fine filter in the present invention.

[0055] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0056] 1. Base; 2. Support frame; 3. Box; 4. Filter chamber; 5. Guide block; 6. Slot; 7. Top cover; 8. Insert rod; 9. Stud; 10. Nut; 11. Diverter compartment; 12. Diverter pipe; 13. Air outlet; 14. Inlet compartment; 15. Mounting hole; 16. Inlet port; 17. Inlet pipe; 18. First threaded hole; 19. First bolt; 20. Filter element; 21. Positioning slot; 22. Motor; 23. Filter frame; 24. Second threaded hole; 25. The second bolt; 26, coarse filter; 27, cleaning block; 28, threaded groove; 29, cleaning brush; 30, electric telescopic rod; 31, lifting plate; 32, recovery groove; 33, air outlet chamber; 34, air outlet; 35, installation groove; 36, fine filter; 37, mounting plate; 38, handle; 39, reinforcing rib; 40, sealing plug; 41, pipe hole; 42, sealing ring; 43, slot; 44, block; 45, cushion block; 46, positioning rod; 47, positioning hole. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] In the description of the present invention, it should be understood that the terms "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] See also Figure 1-19 As shown, a dust filtering mechanism for a nitrogen generator of the present invention comprises a base 1, a pair of support frames 2 are fixedly connected to the top of the base 1, a box body 3 is fixedly connected between the pair of support frames 2, a plurality of filter chambers 4 are provided inside the box body 3, the cross section of the filter chamber 4 is circular, a guide block 5 is fixedly connected to the inner wall of the bottom end thereof, the guide block 5 is annular, and the top thereof is an inclined end face, a plurality of slots 6 are provided on the top end face of the box body 3, a top cover 7 is installed on the top of the box body 3, a plurality of plug rods 8 are fixedly connected to the bottom of the top cover 7, and a plurality of studs 9 are fixedly connected to the top of the top cover 7, each of which is threadedly connected to the There is a nut 10 matched therewith, a first filter assembly is arranged on the top of the top cover 7, and a plurality of shunt bins 11 are fixedly connected to the bottom of the top cover 7, the shunt bins 11 are cylindrical, and the top end thereof passes through the top cover 7, and a plurality of shunt pipes 12 are fixedly connected to the side wall of the shunt bins 11, and a second filter assembly is arranged at the bottom of each shunt bin 11, a recovery assembly is arranged below the box body 3, and a plurality of air outlets 13 are opened on the front face of the box body 3, the number of the air outlets 13 is the same as that of the filter chamber 4, and each air outlet 13 is communicated with the corresponding filter chamber 4, and a third filter assembly is arranged on the front face of the box body 3;

[0060] The first filter assembly includes an air intake bin 14, the bottoms of both sides of the air intake bin 14 are L-shaped and have a plurality of mounting holes 15, and the top of the air intake bin 14 is provided with an air intake port 16, an air intake pipe 17 is inserted into the air intake port 16, and unfiltered air can be introduced into the air intake bin 14 through the air intake pipe 17, and the side walls of the air intake bin 14 are provided with a plurality of first threaded holes 18, and the first threaded holes 18 are equidistantly distributed linearly along the width direction of the air intake bin 14, and each first threaded hole 18 is threadedly connected with a first bolt 19 matched therewith, and the air intake bin 14 is installed with a A plurality of filter elements 20, each of which is provided with a positioning groove 21 at both ends, the diameter of the positioning groove 21 being equal to the diameter of the first bolt 19, and the first bolt 19 in each first threaded hole 18 can be tightened to insert its end into the corresponding positioning groove 21, so that each filter element 20 can be fixedly installed in the air intake bin 14 through the mutual cooperation between the first bolt 19 and the positioning groove 21, and when the air enters the air intake bin 14, it will contact each filter element 20, and at this time, the filter element 20 can be used to effectively remove oil mist and moisture in the air, so as to complete the first filtration of the air;

[0061] The second filter assembly includes a motor 22, which is mounted at the bottom of the shunt bin 11, and a plurality of filter racks 23 are fixedly connected to the output shaft thereof. The top and bottom of the filter rack 23 are both L-shaped and are provided with a second threaded hole 24, and each second threaded hole 24 is threadedly connected with a second bolt 25 matched therewith, and each filter rack 23 is respectively installed with a coarse filter screen 26 and a self-cleaning assembly, and the coarse filter screen 26 is selected from a glass fiber filter screen. When the air passes through the first filtration and enters each filter chamber 4, each motor 22 is driven to drive each filter rack 23 and the coarse filter screen 26 to rotate together, so that the air in each filter chamber 4 is respectively in contact with each coarse filter screen 26, and at this time, the coarse filter screen 26 can be used to remove large particles of impurities in the air to complete the second filtration of the air;

[0062] The self-cleaning component includes a cleaning block 27, the top and bottom surfaces of the cleaning block 27 are both provided with thread grooves 28 that cooperate with the second bolts 25. By tightening the second bolts 25 in each second threaded hole 24, the ends of the second bolts 25 can be screwed into the corresponding thread grooves 28, so that the cleaning block 27 can be fixedly installed on the filter frame 23 through the mutual cooperation between the second bolts 25 and the thread grooves 28. The side wall of the cleaning block 27 is arc-shaped, and a layer of cleaning brushes 29 is provided on the arc surface of the cleaning block 27. The cleaning brushes 29 are fixed by glue or the like, and the ends thereof are in contact with the inner wall of the filter chamber 4. When the motor 22 drives the filter frame 23 to rotate, the cleaning brushes 29 on the surfaces of each cleaning block 27 can reciprocate along the inner wall surface of each filter chamber 4 to achieve the self-cleaning function, thereby effectively preventing dust or other solid particles from adhering to and accumulating on the inner wall of the filter chamber 4. By unscrewing the second bolts 25, each cleaning block 27 can be removed from the filter frame 23, so that the cleaning brushes 29 can be cleaned regularly.

[0063] The recovery component includes an electric telescopic rod 30, which is mounted on the base 1, and a lifting plate 31 is fixedly connected to the top of its output shaft. A plurality of recovery slots 32 are placed on the lifting plate 31. The electric telescopic rod 30 can be driven to drive the lifting plate 31 and each recovery slot 32 to move up and down. When the lifting plate 31 is attached to the bottom of the box body 3, each recovery slot 32 can extend into the filter chamber 4. When the self-cleaning component is used to self-clean the inner wall of each filter chamber 4, the impurity particles that fall after being scraped by the cleaning brush 29 can fall into the corresponding recovery slot 32 along the guide block 5, so that the impurity particles can be uniformly recovered through the recovery slot 32. When the lifting plate 31 moves downward and leaves the bottom of the box body 3, each recovery slot 32 can be removed from the lifting plate 31, so as to subsequently clean the impurity particles in the recovery slot 32.

[0064] The third filter assembly includes an air outlet bin 33, which is fixedly connected to the front end surface of the box body 3, and its inner cavity is connected to each air outlet hole 13, and an air outlet 34 is provided on the front end surface of the air outlet bin 33. A mounting groove 35 is provided on the top of the air outlet bin 33, and a fine filter 36 is inserted into the mounting groove 35. A mounting plate 37 is fixedly connected to the top of the fine filter 36, and a handle 38 is fixedly connected to the top of the mounting plate 37. By holding the handle 38, the mounting plate 37 together with the fine filter 36 can be inserted into the mounting groove 35. The fine filter 36 is a HEPA filter. After the air is filtered for the second time and enters the air outlet bin 33 through each air outlet hole 13, it will contact the fine filter 36. At this time, the fine filter 36 can be used to remove the fine particle impurities remaining in the air to complete the third filtration of the air. The air after the third filtration can be exported to other core components of the nitrogen generator (such as the adsorption tower) through the air outlet 34, so as to complete the subsequent nitrogen separation and purification work.

[0065] Among them, the support frame 2 is L-shaped, and its inner wall is fixedly connected with a plurality of reinforcing ribs 39. The reinforcing ribs 39 are triangular, and their tops are fixedly connected to the top inner wall of the support frame 2. The reinforcing ribs 39 are equidistantly linearly distributed along the width direction of the support frame 2. The box body 3 can be supported and fixed by the support frame 2, and each reinforcing rib 39 can play a reinforcing role, so as to improve the structural firmness of the support frame 2, thereby effectively avoiding deformation of the support frame 2 due to long-term stress.

[0066] Among them, the number of the plug rods 8 and the slots 6 are the same, the diameters are equal, and the center of each plug rod 8 corresponds to the center of each slot 6 one by one. Each plug rod 8 can be aligned and inserted into the corresponding slot 6, so that the top cover 7 can be fixed to the top of the box body 3 by plugging. The number of the mounting holes 15 and the studs 9 are the same, the diameters are equal, and the center of each mounting hole 15 corresponds to each stud 9 one by one. Each stud 9 can be aligned and passed through the corresponding mounting holes 15. At this time, the nut 10 is threadedly connected to each stud 9 and tightened. The air intake bin 14 can be fixed to the top cover 7 through the mutual cooperation between the stud 9, the mounting holes 15, and the nut 10. The air intake bin 14 can be removed from the top cover 7 by unscrewing the nut 10. At this time, each first bolt 19 is unscrewed from the positioning groove 21, and each filter element 20 can be taken out from the air intake bin 14, so that each filter element 20 can be regularly maintained and replaced.

[0067] Among them, a sealing plug 40 is installed in the air inlet 16, and the top edge of the sealing plug 40 protrudes outward, and the outer diameter of the bottom end is equal to the inner diameter of the air inlet 16, and a tube hole 41 is opened in the center of the sealing plug 40, and a sealing ring 42 is provided on the hole wall surface of the tube hole 41. The sealing ring 42 is made of elastic materials such as rubber and is fixed by glue or other means. The sealing plug 40 can be inserted into the air inlet 16 tightly and fits on the inner wall of the air inlet 16, and the air inlet pipe 17 can extend to the air inlet bin 14 by passing through the tube hole 41. At this time, the sealing ring 42 can be used to fill the gap between the air inlet pipe 17 and the tube hole 41 to play a sealing role, thereby effectively preventing air from escaping through the gap.

[0068] Among them, the number of diversion bins 11 and filter chambers 4 is the same, and each diversion bin 11 is located directly above the corresponding filter chamber 4, one end of the diversion tube 12 is connected to the inner cavity of the diversion bin 11, and the diversion tube 12 is equidistantly distributed in annular shape along the circumferential direction of the diversion bin 11. After the air is filtered for the first time, it can be introduced into the corresponding filter chamber 4 through each diversion bin 11 and the diversion tube 12 respectively to play a diversion role. Through multiple diversion tubes 12, the air can be quickly diffused to each filter chamber 4, and the air can be fully in contact with the second filter component in each filter chamber 4, which not only effectively avoids dust residue caused by insufficient filtration of the air, but also greatly reduces the burden of the second filter component.

[0069] Among them, the filter frames 23 are distributed in an equidistant ring shape along the circumferential direction of the output shaft of the motor 22, and the top and bottom inner walls of each filter frame 23 are provided with card slots 43, and the top and bottom of each coarse filter screen 26 are fixedly connected with a card block 44, the card block 44 and the card slot 43 are both rectangular, and the thickness of the card block 44 is equal to the slot width of the card slot 43, and the card block 44 can be aligned and fit in the corresponding card slot 43. The coarse filter screen 26 can be fixedly installed on the filter frame 23 through the mutual cooperation between the card block 44 and the card slot 43. When the cleaning block 27 is removed from the filter frame 23, the coarse filter screen 26 can be removed from the filter frame 23 by sliding the card block 44, so as to perform regular maintenance and replacement of each coarse filter screen 26.

[0070] Among them, the width of the coarse filter screen 26 is equal to the length of the filter frame 23, and a number of pads 45 are arranged on both sides of the coarse filter screen 26. The pads 45 are made of elastic materials such as rubber and are fixed by glue or other means. When the coarse filter screen 26 is fixedly installed on the filter frame 23, the two sides of the coarse filter screen 26 can be respectively attached to the inner wall of the filter frame 23 and one side of the cleaning block 27. At this time, each pad 45 can play a buffering and protective role to avoid direct contact between the coarse filter screen 26 and the filter frame 23 and the cleaning block 27 to cause collision and wear.

[0071] Among them, the recovery groove 32 is circular, and its number is the same as the filter cavity 4. Each recovery groove 32 is located directly below the corresponding filter cavity 4, and the outer diameter of the recovery groove 32 is equal to the inner diameter of the guide block 5. The bottom of each recovery groove 32 is fixedly connected with a positioning rod 46, and a plurality of positioning holes 47 are opened on the surface of the lifting plate 31. The positioning holes 47 are the same in number and diameter as the positioning rods 46, and the center of each positioning hole 47 corresponds one-to-one to the center of each positioning rod 46. When the recovery groove 32 is placed on the lifting plate 31, the positioning rod 46 can be aligned with and pass through the corresponding positioning hole 47. At this time, the mutual cooperation between the positioning rod 46 and the positioning hole 47 can play a positioning role, so as to fix each recovery groove 32 on the lifting plate 31.

[0072] Among them, the installation groove 35 is rectangular, and its length is equal to the length of the inner wall of the air outlet bin 33. The length and thickness of the fine filter 36 are respectively equal to the length and width of the installation groove 35. After the fine filter 36 is inserted into the installation groove 35, it can fit tightly in the installation groove 35 and at the same time fit on the inner wall of the air outlet bin 33. The fine filter 36 can be taken out of the air outlet bin 33 by holding the handle 38 and lifting it upwards, so as to perform regular maintenance and replacement of the fine filter 36.

[0073] A method for using a dust filter mechanism for a nitrogen generator is implemented by using the above-mentioned dust filter mechanism for a nitrogen generator, and comprises the following steps:

[0074] S1. The unfiltered air is introduced into the air intake bin 14 through the air intake pipe 17. After the air enters the air intake bin 14, it will contact each filter element 20. At this time, the filter element 20 can effectively remove the oil mist and moisture in the air to complete the first filtration of the air;

[0075] S2. After the air has been filtered for the first time, it can be introduced into the corresponding filter chamber 4 through each shunt bin 11 and shunt pipe 12, and then each motor 22 is driven to drive each filter frame 23 together with the coarse filter screen 26 to rotate, so that the air in each filter chamber 4 contacts each coarse filter screen 26, and the coarse filter screen 26 can be used to remove large particles of impurities in the air to complete the second filtration of the air;

[0076] S3. When the motor 22 drives the filter frame 23 to rotate, the cleaning brushes 29 on the surfaces of the cleaning blocks 27 can scrape back and forth along the inner wall surfaces of the filter chambers 4 to achieve a self-cleaning function, thereby effectively preventing dust or other solid particles from adhering to and accumulating on the inner wall of the filter chamber 4. The impurity particles that fall after being scraped by the cleaning brush 29 can fall into the corresponding recovery slot 32 along the guide block 5, so that the impurity particles can be uniformly recovered through the recovery slot 32;

[0077] S4, after the air is filtered for the second time and enters the air outlet bin 33 through each air outlet hole 13, it will contact the fine filter 36. At this time, the fine filter 36 can be used to remove the fine particles remaining in the air to complete the third filtration of the air;

[0078] S5. The air after the third filtration can be exported to other core components of the nitrogen generator (such as an adsorption tower) through the air outlet 34 to complete the subsequent nitrogen separation and purification work;

[0079] S6. Drive the electric telescopic rod 30 to drive the lifting plate 31 to move downward until the lifting plate 31 leaves the bottom of the box body 3. Then, each recovery tank 32 can be removed from the lifting plate 31 so as to subsequently clean the impurity particles in the recovery tank 32.

[0080] S7. The air inlet bin 14 can be removed from the top cover 7 by unscrewing the nut 10. At this time, each first bolt 19 is unscrewed from the positioning groove 21, and each filter element 20 can be taken out from the air inlet bin 14 so as to perform regular maintenance and replacement of each filter element 20.

[0081] S8. Each cleaning block 27 can be removed from the filter frame 23 by unscrewing the second bolt 25, so as to regularly clean the cleaning brush 29. After the cleaning block 27 is removed from the filter frame 23, the coarse filter screen 26 can be removed from the filter frame 23 by sliding the clamping block 44, so as to regularly maintain and replace each coarse filter screen 26.

[0082] S9. The fine filter 36 can be taken out from the air outlet bin 33 by holding the handle 38 and lifting it upwards, so that the fine filter 36 can be regularly maintained and replaced.

[0083] The circuits, electronic components and chip modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0084] The standard parts used in the application documents can all be purchased from the market. All the components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art. The electrical components appearing in this article are all electrically connected to the external main controller and 220V AC power, and the main controller can be a conventional known device that controls the LED lamp body, etc.

[0085] The working principle of the present invention is:

[0086] When the present invention is in use, firstly, the electrical components in the dust filtering mechanism are connected to an external control switch and a power supply through wires, and then the unfiltered air is introduced into the air intake bin 14 through the air intake pipe 17. After the air enters the air intake bin 14, it will contact each filter element 20. At this time, the filter element 20 can effectively remove oil mist and moisture in the air to complete the first filtration of the air. After the air has been filtered for the first time, it can be introduced into the corresponding filter chamber 4 through each diversion bin 11 and the diversion pipe 12 respectively. Then, each motor 22 is driven to drive each filter frame 23 to rotate together with the coarse filter screen 26, so that the air in each filter chamber 4 is respectively in contact with each coarse filter screen 26. At this time, the coarse filter screen 26 can be used to remove large particles of impurities in the air to complete the second filtration of the air. When the motor 22 drives the filter frame When 23 rotates, the cleaning brushes 29 on the surfaces of the cleaning blocks 27 can perform reciprocating scraping along the inner wall surfaces of the filter chambers 4 to achieve a self-cleaning function, thereby effectively preventing dust or other solid particles from adhering to and accumulating on the inner wall of the filter chamber 4. The impurity particles that fall after being scraped by the cleaning brush 29 can fall into the corresponding recovery groove 32 along the guide block 5, so that the impurity particles can be uniformly recovered through the recovery groove 32. After the air is filtered for the second time and enters the air outlet bin 33 through each air outlet hole 13, it will contact the fine filter 36. At this time, the fine filter 36 can be used to remove the fine particle impurities remaining in the air to complete the third filtration of the air. After that, the air that has been filtered for the third time can be exported to other core components of the nitrogen generator (such as an adsorption tower) through the air outlet 34 to complete the subsequent nitrogen separation and purification work.

[0087] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dust filtering mechanism for a nitrogen generator, characterized in that: The invention comprises a base, a pair of support frames are fixedly connected to the top of the base, a box is fixedly connected between the pair of support frames, a plurality of filter cavities are opened inside the box, the cross section of the filter cavity is circular, a guide block is fixedly connected to the inner wall of the bottom end thereof, the guide block is annular, and the top is an inclined end face, a plurality of slots are opened on the top end face of the box, and a top cover is installed on the top of the box, a plurality of plug rods are fixedly connected to the bottom of the top cover, and a plurality of studs are fixedly connected to the top of the top cover, and each of the studs is threadedly connected with a mating thread. A nut, a first filter assembly is arranged on the top of the top cover, and a plurality of shunt bins are fixedly connected to the bottom of the top cover, the shunt bin is cylindrical, and its top end passes through the top cover, and a plurality of shunt pipes are fixedly connected to the side wall of the shunt bin, and a second filter assembly is arranged on the bottom of each shunt bin, a recovery assembly is arranged below the box body, and a plurality of air outlets are arranged on the front face of the box body, the number of the air outlets is the same as that of the filter chamber, and each of the air outlets is communicated with the corresponding filter chamber, and a third filter assembly is arranged on the front face of the box body; The first filter assembly includes an air intake bin, the bottoms of both sides of the air intake bin are L-shaped and provided with a plurality of mounting holes, and the top of the air intake bin is provided with an air intake port, an air intake pipe is inserted into the air intake port, and the side walls of both sides of the air intake bin are provided with a plurality of first threaded holes, the first threaded holes are equidistantly distributed linearly along the width direction of the air intake bin, and each of the first threaded holes is threadedly connected with a first bolt matched therewith, and a plurality of filter elements are installed in the air intake bin, and both ends of each of the filter elements are provided with a positioning groove, and the diameter of the positioning groove is equal to the diameter of the first bolt; The second filter assembly includes a motor, which is installed at the bottom of the diversion bin, and a plurality of filter racks are fixedly connected to the output shaft of the motor. The top and bottom of the filter rack are both L-shaped and have second threaded holes. Each of the second threaded holes is threadedly connected with a second bolt matched therewith, and each of the filter racks is respectively installed with a coarse filter screen and a self-cleaning assembly; The self-cleaning assembly comprises a cleaning block, the top and bottom surfaces of the cleaning block are both provided with thread grooves matched with the second bolt, the side wall of the cleaning block is arc-shaped, and a layer of cleaning brushes is arranged on the arc-shaped surface of the cleaning block; The recycling assembly includes an electric telescopic rod, which is mounted on a base, and a lifting plate is fixedly connected to the top of the output shaft thereof, and a plurality of recycling slots are placed on the lifting plate; The third filter assembly includes an air outlet bin, which is fixedly connected to the front end surface of the box body, and its inner cavity is connected to each air outlet hole. An air outlet is provided on the front end surface of the air outlet bin, and a mounting groove is provided on the top of the air outlet bin. A fine filter is inserted into the mounting groove, and a mounting plate is fixedly connected to the top of the fine filter, and a handle is fixedly connected to the top of the mounting plate.

2. A dust filtering mechanism for a nitrogen generator according to claim 1, characterized in that: The support frame is L-shaped, and a plurality of reinforcing ribs are fixedly connected to its inner wall. The reinforcing ribs are triangular, and their tops are fixedly connected to the top inner wall of the support frame. The reinforcing ribs are equidistantly linearly distributed along the width direction of the support frame.

3. A dust filtering mechanism for a nitrogen generator according to claim 1, characterized in that: The number of the insertion rods and the slots are the same, the diameters are equal, and the center of each insertion rod corresponds to the center of each slot one by one. The number of the installation holes and the studs are the same, the diameters are equal, and each installation hole corresponds to the center of each stud one by one.

4. A dust filtering mechanism for a nitrogen generator according to claim 1, characterized in that: A sealing plug is installed in the air inlet, the top edge of the sealing plug protrudes outward, the outer diameter of the bottom end is equal to the inner diameter of the air inlet, and a tube hole is opened in the center of the sealing plug, and a sealing ring is arranged on the wall surface of the tube hole.

5. A dust filtering mechanism for a nitrogen generator according to claim 1, characterized in that: The number of the diversion bins is the same as that of the filter chambers, and each of the diversion bins is located directly above the corresponding filter chamber. One end of the diversion tube is connected to the inner cavity of the diversion bin, and the diversion tubes are distributed in an equidistant ring shape along the circumferential direction of the diversion bin.

6. A dust filtering mechanism for a nitrogen generator according to claim 1, characterized in that: The filter frames are distributed in an equidistant annular pattern along the circumferential direction of the motor output shaft, and the top and bottom inner walls of each filter frame are provided with card slots, and the top and bottom of each coarse filter screen are fixedly connected with a card block, the card block and the card slot are both rectangular, and the thickness of the card block is equal to the width of the card slot.

7. A dust filtering mechanism for a nitrogen generator according to claim 1, characterized in that: The width of the coarse filter screen is equal to the length of the filter frame, and a plurality of pads are arranged on both sides of the coarse filter screen.

8. A dust filtering mechanism for a nitrogen generator according to claim 1, characterized in that: The recovery grooves are circular and their number is the same as the filter chamber. Each of the recovery grooves is located directly below the corresponding filter chamber, and the outer diameter of the recovery groove is equal to the inner diameter of the guide block. A positioning rod is fixedly connected to the bottom of each recovery groove. A plurality of positioning holes are provided on the surface of the lifting plate. The number of the positioning holes is the same as that of the positioning rods, and the diameters are equal, and the center of each positioning hole corresponds one-to-one to the center of each positioning rod.

9. A dust filtering mechanism for a nitrogen generator according to claim 1, characterized in that: The installation groove is rectangular, and its length is equal to the length of the inner wall of the air outlet bin. The length and thickness of the fine filter are respectively equal to the length and width of the installation groove.

10. The method for using a dust filter mechanism for a nitrogen generator according to claim 1, characterized in that: The method is implemented by using a dust filtering mechanism for a nitrogen generator as described in any one of claims 1 to 7, comprising the following steps: S1. The unfiltered air is introduced into the air intake chamber through the air intake pipe. After the air enters the air intake chamber, it will contact each filter element. At this time, the filter element can effectively remove the oil mist and moisture in the air to complete the first filtration of the air; S2. After the air has been filtered for the first time, it can be introduced into the corresponding filter chamber through each shunt bin and shunt pipe, and then each motor is driven to drive each filter frame together with the coarse filter to rotate, so that the air in each filter chamber contacts each coarse filter respectively. At this time, the coarse filter can be used to remove large particles of impurities in the air to complete the second filtration of the air; S3. When the motor drives the filter frame to rotate, the cleaning brushes on the surfaces of the cleaning blocks can scrape back and forth along the inner wall surfaces of the filter chambers to achieve a self-cleaning function, thereby effectively preventing dust or other solid particles from adhering to and accumulating on the inner wall of the filter chamber. The impurity particles that fall after being scraped by the cleaning brushes can fall into the corresponding recovery slots along the guide blocks, so that the impurity particles can be uniformly recovered through the recovery slots; S4. After the air is filtered for the second time and enters the air outlet bin through each air outlet hole, it will contact the fine filter. At this time, the fine filter can be used to remove the fine particles remaining in the air to complete the third filtration of the air; S5. The air after the third filtration can be exported to other core components of the nitrogen generator (such as the adsorption tower) through the air outlet to complete the subsequent nitrogen separation and purification work; S6. Drive the electric telescopic rod to drive the lifting plate to move downward until the lifting plate leaves the bottom of the box body, and then each recovery tank can be removed from the lifting plate to subsequently clean the impurity particles in the recovery tank. S7. The air intake bin can be removed from the top cover by unscrewing the nut. At this time, each first bolt can be unscrewed from the positioning groove, and each filter element can be taken out from the air intake bin so as to perform regular maintenance and replacement of each filter element. S8. Each cleaning block can be removed from the filter frame by unscrewing the second bolt, so as to regularly clean the cleaning brush. After the cleaning block is removed from the filter frame, the coarse filter screen can be removed from the filter frame by sliding the card block, so as to regularly maintain and replace each coarse filter screen. S9. The fine filter can be taken out from the air outlet bin by holding the handle and lifting it upwards so as to perform regular maintenance and replacement of the fine filter.

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