Air filter device for oxygen concentrator and use method thereof

Abstract

The present invention relates to the field of oxygen concentrator filtration, specifically an air filtration device for an oxygen concentrator and a method of using the same, comprising a support seat, the top of the support seat is rotatably connected to a mounting plate, the upper part of the support seat is fixedly connected to a transposition motor, the rotating end of the transposition motor is fixedly connected to a support rod, the middle part of the support rod is fixedly connected to the axial position of the support seat, one end of the support rod is rotatably connected to a baffle, and the side wall of the baffle is fixedly connected to a cleaning box. The air filtration device for an oxygen concentrator is composed of a filter transposition mechanism and a cleaning mechanism; when the filter transposition mechanism rotates with the filter cartridge to be cleaned to the position of the upper circular hole of the baffle, the cleaning mechanism moves downward in coordination, and the filter cartridge is pulled out from the inside of the corresponding metal cylinder by the adjustment plate with an arc-shaped clamping plate, and the filter cartridge is flipped 90 degrees and inserted into the inside of a sewage pipe for backwashing by gas, thereby improving the utilization rate of the filter cartridge of the oxygen concentrator.

Description

Technical Field

[0001] The invention relates to the field of oxygen concentrator filtration, and in particular to an air filtration device for an oxygen concentrator and a use method thereof. Background Art

[0002] Oxygen generator is a type of machine that produces oxygen. Its principle is to use air separation technology. First, the air is compressed at a high density, and then the different condensation points of the components in the air are used to separate the gas and liquid at a certain temperature, and then distilled to separate it into oxygen and nitrogen;

[0003] Currently, when oxygen produced by an oxygen concentrator is transported, the oxygen needs to be filtered, and the filter needs to be cleaned and replaced during long-term use.

[0004] The existing patent (Announcement No.: CN116999987B) discloses an oxygen concentrator air filter device and filtering method with automatic filter element replacement, including an arc-shaped mounting plate, and a driving member is provided on the outer surface of the arc-shaped mounting plate. In the process of implementing the solution, the inventor found that the following problems in the prior art have not been well solved: 1. The cylindrical filter of some oxygen concentrators can be reused after cleaning during use, while the air filter device of the oxygen concentrator only replaces the filter, which makes it difficult to effectively clean the filter; 2. During the replacement of the filter of some existing oxygen concentrator filter devices, it is necessary to open the sealing cover of the filter, take out the filter for cleaning, and then install the filter after cleaning before continuing to use it. The convenience of disassembly and assembly during the filter cleaning process is poor. Summary of the invention

[0005] The object of the present invention is to provide an air filter device for an oxygen concentrator and a method of using the same, so as to solve the problems raised in the above-mentioned background technology: 1. It is difficult for some existing oxygen concentrator filter devices to effectively clean and reuse the filters; 2. Some existing oxygen concentrator filter devices have poor convenience in disassembly and assembly during the process of cleaning the filters. In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air filter device for an oxygen concentrator, comprising a support seat, the top of the support seat is rotatably connected to a mounting plate, the upper part of the support seat is fixedly connected to a transposition motor, the rotating end of the transposition motor is fixedly connected to a support rod, the middle part of the support rod is fixedly connected to the axial position of the support seat, one end of the support rod is rotatably connected to a baffle, and the side wall of the baffle is fixedly connected to a cleaning box;

[0006] A filter replacement mechanism is movably connected between the surface of the mounting plate and the baffle, a circular hole matching the filter replacement mechanism is provided on the surface of the baffle, two circular holes are provided, and the two circular holes are symmetrically provided on the surface of the baffle, and a cleaning mechanism matching the circular hole is movably connected inside the cleaning box;

[0007] The filter replacement mechanism includes a threaded mounting hole, wherein four threaded mounting holes are provided, and the four threaded mounting holes are equidistantly arranged on the surface of the mounting plate along the circumference; a metal cylinder is connected to the internal thread of the threaded mounting hole; one end of the metal cylinder away from the threaded mounting hole overlaps the side wall of the baffle; one end of the metal cylinder close to the threaded mounting hole is fixedly connected to a telescopic tube; the telescopic end of the telescopic tube is fixedly connected to a cone cylinder; an extrusion spring is movably connected between the side wall of the cone cylinder and the middle part of the telescopic tube; a filter cylinder is movably inserted into the metal cylinder; one end of the filter cylinder is sleeved on the end of the cone cylinder; a clamping groove is arranged at the other end of the filter cylinder; and the other end of the filter cylinder extends to the inside of the corresponding circular hole.

[0008] Preferably, a sealing gasket is fixedly connected to the surface of the baffle, and one end of the metal tube overlaps the surface of the sealing gasket;

[0009] A connecting head is fixedly connected to the middle portion of the outer wall of the metal cylinder.

[0010] Preferably, the other end of the filter cartridge is configured to be conical, and the middle portion of the filter cartridge is configured to be a filter portion.

[0011] Preferably, the cleaning mechanism comprises a support plate, the support plate is fixedly connected to the upper part of the inner wall of the cleaning box, the middle part of the support plate is rotatably connected to a shaft, one end of the shaft is fixedly connected to a cleaning motor, the surface of the cleaning motor is fixedly connected to the inner wall of the cleaning box, the other end of the shaft passes through the support plate and is fixedly connected to a connecting plate, and a waist-shaped groove is provided on the surface of the connecting plate;

[0012] A semi-annular groove is provided in the middle of the support plate, a rolling column is movably connected between the semi-annular groove and the waist-shaped groove, a hinge rod is fixedly connected to the axis of the rolling column, one end of the hinge rod is rotatably connected to an adjustment plate, a U-shaped guide block is slidably connected to the middle of the adjustment plate, and the side wall of the U-shaped guide block is rotatably connected to the surface of the support plate;

[0013] One end of the adjustment plate away from the hinge rod is fixedly connected to a support ring, one side of the support ring is rotatably connected to an adjustment ring, the surface of the adjustment ring is symmetrically provided with arc grooves, and the side of the support ring close to the adjustment ring is symmetrically provided with vertical grooves, the two vertical grooves correspond to the two arc grooves one by one, a sliding rod is movably connected between the vertical grooves and the corresponding arc grooves, one end of the sliding rod is fixedly connected to an arc clamping plate matching the circular hole, and the surface of the arc clamping plate is slidably connected to the inner wall of the support ring;

[0014] A gear rod is fixedly connected to a side of the adjusting ring away from the supporting ring, a locking frame is fixedly connected to a side of the adjusting plate close to the adjusting ring, a locking block is slidably connected to the interior of the locking frame, a locking groove is provided on the surface of the locking block, a telescopic guide rod is slidably connected to the interior of the locking groove, and a wedge block matched with the telescopic guide rod is fixedly connected to the inner wall of the locking groove;

[0015] One end of the telescopic guide rod is fixedly connected to a connecting strip, one end of the connecting strip is hinged on the surface of the locking frame, a compression spring is fixedly connected between the inner wall of the locking frame and the side wall of the locking block, a short rod is fixedly connected to the side of the locking block away from the compression spring, one end of the short rod passes through the locking frame and is fixedly connected to the adjusting frame, and the side of the adjusting frame away from the short rod is fixedly connected to a pressure rod matching the baffle plate, and adjusting grooves are symmetrically provided on both sides of the adjusting frame, an adjusting rod is slidably connected between the two adjusting grooves, one end of the adjusting rod passes through the adjusting plate and is fixedly connected to an adjusting tooth plate, and the side wall of the adjusting tooth plate is meshed with the side wall of the gear rod;

[0016] The side wall at the lower part of the cleaning box is fixedly connected to an air inlet pipe, a push rod is slidably connected to the inside of the air inlet pipe, a sealing cone ring is fixedly connected to the middle of the push rod, the surface of the sealing cone ring overlaps the inner wall of the air inlet pipe, a retaining ring is fixedly connected to the inner wall of the air inlet pipe, one end of the push rod is movably inserted in the middle of the retaining ring, and a pressing spring is movably connected between the side wall of the sealing cone ring and the side wall of the retaining ring;

[0017] The bottom of the cleaning box is fixedly connected to a drain pipe that cooperates with the support ring, the axis of the drain pipe is arranged at the same level as the center line of the U-shaped guide block, one end of the air inlet pipe extends to the upper part of the inner wall of the drain pipe, and the other end of the push rod extends to the inside of the drain pipe, and the lower part of the inner wall of the drain pipe is rotatably connected to a cleaning brush rod, and the bottom of the cleaning brush rod is fixedly connected to a guide fan blade.

[0018] Preferably, a hinge hole is opened on the surface of the adjustment plate, a connecting bearing is fixedly connected to the inner wall of the hinge hole, and the inner ring of the connecting bearing is fixedly connected to the surface of the hinge rod;

[0019] Slide grooves are provided on both sides of the adjustment plate, and sliders are fixedly connected to both sides of the inner wall of the U-shaped guide block, and the sliders are slidably connected to the inside of the corresponding slide grooves;

[0020] A rotating shaft is fixedly connected to one side of the U-shaped guide block close to the support plate, and the rotating shaft is rotatably connected to the surface of the support plate.

[0021] Preferably, a movable groove is formed on the inner wall of the support ring, a movable block is fixedly connected to the surface of the arc-shaped clamping plate, the arc-shaped clamping plate is slidably connected to the inside of the movable groove through the movable block, and an anti-slip rubber pad is fixedly connected to the surface of the arc-shaped clamping plate.

[0022] A support bearing is fixedly connected to one side of the support ring close to the adjustment ring, an outer ring of the adjustment ring is fixedly connected to an inner ring of the support bearing, and a side of the support ring away from the adjustment ring is configured as a conical surface.

[0023] Preferably, the middle part of the inner wall of the sewage pipe is set as a conical surface, and the top of the push rod close to one end of the sewage pipe is set as an inclined surface;

[0024] A rectangular block is symmetrically fixedly connected to the surface of the push rod, and a rectangular groove is symmetrically opened on the inner wall of the air intake pipe. The rectangular block is slidably connected to the inside of the corresponding rectangular groove.

[0025] A method for using an air filter device for an oxygen concentrator comprises the following steps:

[0026] S1. When in use, first start the transposition motor to rotate the filter cartridge to be replaced on the mounting plate to the upper circular hole position. At this time, the filter cartridge inside the metal cylinder is pressed by the extrusion spring and the cone cylinder and extends into the corresponding circular hole on the baffle surface. Then start the cleaning motor to rotate the connecting plate, so that the connecting plate slides along the track of the semi-annular groove with the rolling column through the waist groove. During the movement of the rolling column, one end of the adjustment plate is synchronously moved and deflected through the hinge rod. At this time, the middle part of the adjustment plate slides inside the U-shaped guide block and swings on the surface of the support plate with the center position of the U-shaped guide block as the axis point. When the rolling column rotates to the limit end of the lower part of the semi-annular groove, the adjustment plate is in a horizontal state.

[0027] S2, at this time, the adjusting plate moves with the support ring toward the circular hole at the upper position of the baffle, so that the arc-shaped clamping plate on the support ring is inserted into the end of the filter cartridge inside the circular hole. At the same time, the pressure rod on the side wall of the adjusting plate is pressed by the baffle, so that the pressure rod moves with the adjusting frame and the short rod. In the process of sliding with the adjusting groove on the surface of the adjusting frame and the adjusting rod, the adjusting rod drives the adjusting tooth plate to mesh with the gear rod, so that the gear rod drives the adjusting ring to rotate. In the process of matching the arc groove on the surface of the adjusting ring with the vertical groove on the surface of the support ring, the sliding rod drives the arc-shaped clamping plate to move inside the support ring. At this time, the two arc-shaped clamping plates move back to back and fit the inner wall of the clamping groove at the end of the filter cartridge to clamp the filter cartridge.

[0028] S3. During the movement of the short rod, the locking block will move horizontally inside the locking frame, so that the hinged connection strip on the surface of the locking frame will move the telescopic guide rod to the end position of the locking groove close to the pressure rod, and under the elastic compression of the compression spring, the telescopic guide rod will be limited to the concave position of the locking groove. At this time, the arc clamping plate remains in a clamping state, and then the cleaning motor is started to reverse the connection plate, so that the adjustment plate and the clamped filter cartridge are pulled out from the metal cartridge position and then turned downward 90 degrees, so that the filter cartridge is inserted into the interior of the sewage pipe, and then the surface of the support ring is overlapped on the top of the sewage pipe to seal the top of the sewage pipe;

[0029] S4. During the process of inserting the filter cartridge into the sewage pipe, the filter cartridge presses against the top of the push rod, causing the push rod to be pressed and move toward the inside of the air intake pipe. At this time, the push rod moves with the sealing cone ring and releases the seal of the air intake pipe, allowing the gas inside the air intake pipe to enter the upper position of the inner wall of the sewage pipe. Since the filter cartridge is inserted into the conical surface position in the middle of the sewage pipe, the middle position of the sewage pipe is sealed. At this time, the gas penetrates from the outer wall of the filter cartridge into the inner core position of the filter cartridge, and the filter cartridge is backwashed by the gas. The exhausted gas is discharged from the lower part of the sewage pipe. At the same time, the exhaust gas will rotate with the guide blades during the exhaust process, causing the cleaning brush rod at the axial position of the guide blades to brush and clean the inner core position of the filter cartridge;

[0030] S5. After the filter cartridge is cleaned, the cleaning motor is started to rotate, so that the adjustment plate is flipped 90 degrees and the cleaned filter cartridge is inserted into the corresponding metal cartridge from the round hole position again. At this time, the pressure rod is pressed again and moves the locking block, so that the locking groove on the locking block and the telescopic guide rod cooperate to slide and release the contact state with the concave position of the locking groove. When the adjustment plate leaves the baffle position with the pressure rod, the compression spring presses the locking block to move the telescopic guide rod to the position where the locking groove is away from the short rod side. At this time, the moving locking block moves the short rod and the adjustment frame to reset, so that the adjustment rod resets the adjustment tooth plate and meshes with the gear rod. The adjustment ring is reversed and the two arc clamps on the inner wall of the support ring move relative to each other and release the clamping of the filter cartridge, completing the installation after cleaning.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] In the present invention, through the coordinated use of components such as the baffle, the filter replacement mechanism and the cleaning mechanism, when the filter replacement mechanism rotates with the filter cartridge to be cleaned to the position of the circular hole on the upper part of the baffle, the cleaning mechanism moves downward in coordination, and the filter cartridge is pulled out from the inside of the corresponding metal cartridge by the adjustment plate with the arc-shaped clamping plate, and the filter cartridge is turned over ninety degrees and inserted into the inside of the sewage pipe for backwashing through gas, thereby improving the utilization rate of the filter cartridge of the oxygen generator.

[0033] In the present invention, through the coordinated use of components such as the baffle, the cleaning box and the cleaning mechanism, the filter cartridge is clamped by the adjusting plate with the arc-shaped clamping plate inside the support ring, and the cleaning motor is started to rotate the adjusting plate ninety degrees. While cleaning the filter cartridge that needs to be cleaned inside the metal cartridge, it can be quickly disassembled and installed, thereby improving the convenience of operation.

[0034] In the present invention, through the coordinated use of components such as a sewage pipe, a filter cartridge and a cleaning brush rod, when the filter cartridge is inserted into the sewage pipe, the gas inside the air intake pipe backwashes the inside of the filter cartridge. At this time, the exhausted exhaust gas rotates with the guide blades and the cleaning brush rod to brush the inner core position of the filter cartridge during the cleaning process, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a cross-sectional view of a cleaning box and a local position of an air intake pipe of the present invention;

[0036] Figure 2 It is a cross-sectional view of a local position of the telescopic tube and the metal cylinder of the present invention;

[0037] Figure 3 It is a front cross-sectional view of the cleaning box and the partial position of the air intake pipe of the present invention;

[0038] Figure 4 For the present invention Figure 3 A magnified view of the structure at center A;

[0039] Figure 5 It is a left side view of the cleaning box and the partial position of the baffle of the present invention;

[0040] Figure 6 A three-dimensional diagram of the local position of the adjustment plate and the support ring of the present invention;

[0041] Figure 7 It is a rear view of the partial position of the adjustment plate and the locking frame of the present invention;

[0042] Figure 8 It is a right sectional view of the local position of the support ring and the adjustment ring of the present invention;

[0043] Fig. 9 It is a left sectional view of a local position of the support ring of the present invention;

[0044] Fig.10 It is a rear view of the cleaning motor and a local position of the support plate of the present invention.

[0045] In the figure: 1, support seat; 2, mounting plate; 3, transposition motor; 4, support rod; 5, baffle; 6, cleaning box; 7, filter transposition mechanism; 701, threaded mounting hole; 702, metal cylinder; 703, telescopic tube; 704, cone cylinder; 705, extrusion spring; 706, filter cylinder; 707, clamping groove; 8, round hole; 9, cleaning mechanism; 901, support plate; 902, shaft rod; 903, cleaning motor; 904, connecting plate; 905, waist groove; 906, semi-ring groove; 907, rolling column; 908, hinged rod; 909, adjustment plate; 910, U-shaped guide block; 911, support ring; 912, adjustment Section ring; 913, arc groove; 914, vertical groove; 915, sliding rod; 916, arc splint; 917, gear rod; 918, locking frame; 919, locking block; 920, locking groove; 921, telescopic guide rod; 922, wedge block; 923, connecting strip; 924, compression spring; 925, short rod; 926, adjustment frame; 927, pressure rod; 928, adjustment groove; 929, adjustment rod; 930, adjustment tooth plate; 931, intake pipe; 932, push rod; 933, sealing cone ring; 934, retaining ring; 935, pressing spring; 936, drain pipe; 937, cleaning brush rod; 938, guide fan blade. DETAILED DESCRIPTION

[0046] 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figures 1 to 10 The present invention provides a technical solution: an air filter device for an oxygen concentrator, comprising a support seat 1, a mounting plate 2 is rotatably connected to the top of the support seat 1, a transposition motor 3 is fixedly connected to the upper part of the support seat 1, a support rod 4 is fixedly connected to the rotating end of the transposition motor 3, the middle part of the support rod 4 is fixedly connected to the axial position of the support seat 1, one end of the support rod 4 is rotatably connected to a baffle 5, and a cleaning box 6 is fixedly connected to the side wall of the baffle 5. It should be noted that a mounting bearing is fixedly connected between one end of the support rod 4 and the surface of the baffle 5, so that the transposition motor 3 can be stably rotated and adjusted at the side wall of the baffle 5 through the support rod 4 with the mounting plate 2, and the transposition motor 3 rotates ninety degrees with the mounting plate 2 each time.

[0048] A filter replacement mechanism 7 is movably connected between the surface of the mounting plate 2 and the baffle 5. A circular hole 8 matching the filter replacement mechanism 7 is provided on the surface of the baffle 5. Two circular holes 8 are provided. The two circular holes 8 are symmetrically provided on the surface of the baffle 5. A cleaning mechanism 9 matching the circular holes 8 is movably connected inside the cleaning box 6. It should be noted that: the two circular holes 8 are provided on the surface of the baffle 5 in a vertically symmetrical manner. An inspection door is hingedly provided at the bottom of the cleaning box 6 to facilitate replacement of the filter cartridge 706 at the position of the lower circular hole 8. The inspection door is provided in the prior art here and will not be described in detail. The upper circular hole 8 is provided correspondingly to the upper part of the cleaning mechanism 9.

[0049] The filter replacement mechanism 7 includes a threaded mounting hole 701, which is provided with four threaded mounting holes 701. The four threaded mounting holes 701 are equidistantly arranged on the surface of the mounting plate 2 along the circumference. The internal threads of the threaded mounting hole 701 are connected with a metal cylinder 702. One end of the metal cylinder 702 away from the threaded mounting hole 701 overlaps the side wall of the baffle 5. One end of the metal cylinder 702 close to the threaded mounting hole 701 is fixedly connected with a telescopic tube 703. The telescopic end of the telescopic tube 703 is fixedly connected with a cone cylinder 704. An extrusion spring 705 is movably connected between the side wall of the cone cylinder 704 and the middle part of the telescopic tube 703. A filter cylinder 706 is movably inserted into the metal cylinder 702. One end of the filter cylinder 706 is sleeved on the end of the cone cylinder 704. A clamping groove 707 is arranged at the other end of the filter cylinder 706. The other end of the filter cylinder 706 extends to the inside of the corresponding circular hole 8. It should be noted that the end of the telescopic tube 703 is connected to the air delivery pipe of the oxygen concentrator, so that the gas enters the cone 704 and the filter cartridge 706 from the inside of the telescopic tube 703. At this time, the air is filtered by the filter cartridge 706 and then discharged into the metal cylinder 702.

[0050] In this embodiment, Figures 1 to 10 As shown, a sealing gasket is fixedly connected to the surface of the baffle 5, and one end of the metal cylinder 702 overlaps the surface of the sealing gasket. It should be noted that one end of the metal cylinder 702 can be provided with an arc chamfer to reduce the friction between the metal cylinder 702 and the sealing gasket when the mounting plate 2 rotates with the metal cylinder 702.

[0051] A connector is fixedly connected to the middle of the outer wall of the metal cylinder 702. It should be noted that the connector is connected to the purified gas delivery pipe on the oxygen concentrator, and this connection method is a prior art and will not be described in detail.

[0052] In this embodiment, Figures 1 to 10As shown, the other end of the filter cartridge 706 is set to be conical, and the middle part of the filter cartridge 706 is set to be a filter part. It should be noted that: through the conical setting, when the mounting plate 2 rotates with the metal cartridge 702 and the filter cartridge 706, the conical surface of the other end of the filter cartridge 706 contacts the inner wall of the circular hole 8 on the baffle 5, so that the other end of the filter cartridge 706 is pressed to slide inside the metal cartridge 702 to avoid interference, and after the conical position of the other end of the filter cartridge 706 extends partly from the corresponding circular hole 8 position, it is convenient to cooperate and clamp with the arc clamping plate 916 on the cleaning mechanism 9.

[0053] In this embodiment, Figures 1 to 10 As shown, the cleaning mechanism 9 includes a support plate 901, which is fixedly connected to the upper part of the inner wall of the cleaning box 6. The middle part of the support plate 901 is rotatably connected to an axis rod 902, one end of the axis rod 902 is fixedly connected to a cleaning motor 903, the surface of the cleaning motor 903 is fixedly connected to the inner wall of the cleaning box 6, and the other end of the axis rod 902 passes through the support plate 901 and is fixedly connected to a connecting plate 904, and a waist-shaped groove 905 is provided on the surface of the connecting plate 904.

[0054] A semi-annular groove 906 is provided in the middle of the support plate 901, and a rolling column 907 is movably connected between the semi-annular groove 906 and the waist-shaped groove 905. The axial position of the rolling column 907 is fixedly connected to a hinge rod 908, and one end of the hinge rod 908 is rotatably connected to an adjustment plate 909. The middle part of the adjustment plate 909 is slidably connected to a U-shaped guide block 910, and the side wall of the U-shaped guide block 910 is rotatably connected to the surface of the support plate 901. It should be noted that: the cleaning motor 903 is configured as a servo motor. When the cleaning motor 903 is started and the connecting plate 904 is rotated through the shaft 902, the connecting plate 904 slides along the trajectory of the semi-annular groove 906 with the rolling column 907 through the waist-shaped groove 905. At this time, the hinged rod 908 at the axial position of the rolling column 907 slides with the adjustment plate 909 in the middle of the U-shaped guide block 910, and the U-shaped guide block 910 rotates on the surface of the support plate 901 with the center as the axis point. When the rolling column 907 slides from one end of the semi-annular groove 906 to the other end, the rolling column 907 can rotate ninety degrees with the adjustment plate 909.

[0055] The end of the adjustment plate 909 away from the hinge rod 908 is fixedly connected with a support ring 911, and one side of the support ring 911 is rotatably connected with an adjustment ring 912. The surface of the adjustment ring 912 is symmetrically provided with arc grooves 913, and the side of the support ring 911 close to the adjustment ring 912 is symmetrically provided with vertical grooves 914. The two vertical grooves 914 correspond to the two arc grooves 913 one by one. A sliding rod 915 is movably connected between the vertical grooves 914 and the corresponding arc grooves 913. One end of the sliding rod 915 is fixedly connected with an arc clamping plate 916 that matches the circular hole 8, and the surface of the arc clamping plate 916 is slidably connected with the inner wall of the support ring 911. It should be noted that when the adjustment plate 909 is turned over to a horizontal state, the adjustment plate 909 with the arc clamping plate 916 on the support ring 911 is inserted into the circular hole 8 on the surface of the baffle 5, so that the arc clamping plate 916 is inserted into the clamping groove 707 at the end of the corresponding filter cartridge 706.

[0056] The side of the adjusting ring 912 away from the supporting ring 911 is fixedly connected with a gear rod 917, and the side of the adjusting plate 909 close to the adjusting ring 912 is fixedly connected with a locking frame 918, and the locking frame 918 is slidably connected with a locking block 919 inside. The surface of the locking block 919 is provided with a locking groove 920, and the locking groove 920 is slidably connected with a telescopic guide rod 921 inside. The inner wall of the locking groove 920 is fixedly connected with a wedge block 922 that matches the telescopic guide rod 921. It should be noted that: one end of the telescopic guide rod 921 close to the inner wall of the locking groove 920 is set as an arc surface to reduce the friction resistance between the telescopic guide rod 921 and the inner wall of the locking groove 920; when the telescopic guide rod 921 slides inside the locking groove 920 with the connecting strip 923, when the telescopic guide rod 921 moves to the position of the wedge block 922, the telescopic guide rod 921 can be extended to avoid interference, and the setting of the wedge block 922 can prevent the telescopic guide rod 921 from sliding inside the wedge block 922 in the opposite direction.

[0057] One end of the telescopic guide rod 921 is fixedly connected to a connecting strip 923, one end of the connecting strip 923 is hinged on the surface of the locking frame 918, a compression spring 924 is fixedly connected between the inner wall of the locking frame 918 and the side wall of the locking block 919, a short rod 925 is fixedly connected to the side of the locking block 919 away from the compression spring 924, one end of the short rod 925 passes through the locking frame 918 and is fixedly connected to an adjustment frame 926, and the side of the adjustment frame 926 away from the short rod 925 is fixedly connected to a pressure rod 927 that cooperates with the baffle 5, adjustment slots 928 are symmetrically provided on both sides of the adjustment frame 926, an adjustment rod 929 is slidably connected between the two adjustment slots 928, one end of the adjustment rod 929 passes through the adjustment plate 909 and is fixedly connected to an adjustment tooth plate 930, and the side wall of the adjustment tooth plate 930 is meshed with the side wall of the gear rod 917. It should be noted that: the surface of the locking frame 918 is provided with a through hole that matches the short rod 925, and the adjustment frame 926 is slidably connected to the surface of the adjustment plate 909 to ensure the stability of the movement of the adjustment frame 926; the adjustment rod 929 is symmetrically fixedly connected with a sliding pin at one end close to the adjustment frame 926, and the adjustment rod 929 is slidably connected to the inside of the corresponding adjustment groove 928 through the sliding pin. The adjustment groove 928 is set as an oblique groove. When the adjustment frame 926 moves to the side wall position of the adjustment plate 909, in the process of sliding cooperation between the adjustment groove 928 and the adjustment rod 929, the adjustment rod 929 carries the adjustment tooth plate 930 to mesh with the gear rod 917 for transmission, so that the gear rod 917 rotates with the adjustment ring 912.

[0058] The side wall at the lower part of the cleaning box 6 is fixedly connected with an air inlet pipe 931, a push rod 932 is slidably connected inside the air inlet pipe 931, a sealing cone ring 933 is fixedly connected to the middle of the push rod 932, the surface of the sealing cone ring 933 overlaps the inner wall of the air inlet pipe 931, a retaining ring 934 is fixedly connected to the inner wall of the air inlet pipe 931, one end of the push rod 932 is movably inserted in the middle of the retaining ring 934, and a pressing spring 935 is movably connected between the side wall of the sealing cone ring 933 and the side wall of the retaining ring 934. It should be noted that: the inner wall of the air inlet pipe 931 is set as a conical surface, and the sealing cone ring 933 on the push rod 932 is pressed by the pressing spring 935 to fit the conical surface of the inner wall of the air inlet pipe 931, so as to seal the air inlet pipe 931.

[0059] The bottom of the cleaning box 6 is fixedly connected with a drain pipe 936 that matches the support ring 911. The axis of the drain pipe 936 is arranged at the same level as the center line of the U-shaped guide block 910. One end of the air inlet pipe 931 extends to the upper part of the inner wall of the drain pipe 936. The other end of the push rod 932 extends to the inside of the drain pipe 936. The lower part of the inner wall of the drain pipe 936 is rotatably connected with a cleaning brush rod 937, and the bottom of the cleaning brush rod 937 is fixedly connected with a guide blade 938. It should be noted that when the adjustment plate with the support ring is turned over 90 degrees, the conical surface position of the support ring will be inserted into the top of the drain pipe to seal the top of the drain pipe; the lower part of the inner wall of the drain pipe is fixedly connected with a bracket, and the cleaning brush rod is rotatably connected to the axis position of the bracket.

[0060] In this embodiment, Figures 1 to 10 As shown, a hinge hole is opened on the surface of the adjustment plate 909 , a connecting bearing is fixedly connected to the inner wall of the hinge hole, and the inner ring of the connecting bearing is fixedly connected to the surface of the hinge rod 908 .

[0061] Slide grooves are provided on both sides of the adjustment plate 909 , and sliders are fixedly connected to both sides of the inner wall of the U-shaped guide block 910 , and the sliders are slidably connected to the inside of the corresponding slide grooves.

[0062] A rotating shaft is fixedly connected to one side of the U-shaped guide block 910 close to the support plate 901 , and the rotating shaft is rotatably connected to the surface of the support plate 901 .

[0063] In this embodiment, Figures 1 to 10 As shown, a moving groove is provided on the inner wall of the support ring 911, a moving block is fixedly connected to the surface of the arc-shaped clamping plate 916, the arc-shaped clamping plate 916 is slidably connected to the inside of the moving groove through the moving block, and an anti-skid rubber pad is fixedly connected to the surface of the arc-shaped clamping plate 916. It should be noted that the moving block cooperates with the moving groove to improve the stability of the movement of the arc-shaped clamping plate 916, and the anti-skid rubber pad improves the stability of the two arc-shaped clamping plates 916 in the process of clamping the filter cartridge 706.

[0064] The support ring 911 is fixedly connected to a support bearing on one side close to the adjustment ring 912, the outer ring of the adjustment ring 912 is fixedly connected to the inner ring of the support bearing, and the support ring 911 is configured as a conical surface on one side away from the adjustment ring 912. It should be noted that when the support ring 911 is turned over 90 degrees with the adjustment plate 909, the conical surface of the support ring 911 is buckled on the top of the sewage pipe 936 for sealing.

[0065] In this embodiment, Figures 1 to 10As shown, the middle part of the inner wall of the sewage pipe 936 is set as a conical surface, and the top of the push rod 932 near one end of the sewage pipe 936 is set as an inclined surface. It should be noted that: when the end of the filter cartridge 706 away from the clamping groove 707 is inserted into the sewage pipe 936, the end of the filter cartridge 706 away from the clamping groove 707 is plugged into the conical surface of the inner wall of the sewage pipe 936 to perform sealing; when the filter cartridge 706 enters the sewage pipe 936, it presses against the inclined surface position of the top of the push rod 932, pressing the push rod 932 to move toward the inside of the air intake pipe 931, so that the gas inside the air intake pipe 931 enters the sealed sewage pipe 936.

[0066] The push rod 932 has rectangular blocks symmetrically fixedly connected to its surface, and the inner wall of the air inlet pipe 931 has rectangular grooves symmetrically opened, and the rectangular blocks are slidably connected inside the corresponding rectangular grooves. It should be noted that the rectangular blocks cooperate with the rectangular grooves to prevent the push rod 932 from rotating and affecting the use effect.

[0067] In this embodiment, Figures 1 to 10 As shown, a method for using an air filter device for an oxygen concentrator comprises the following steps:

[0068] S1. When in use, first start the transposition motor 3 to rotate the filter cartridge 706 to be replaced on the mounting plate 2 to the position of the upper circular hole 8. At this time, the filter cartridge 706 inside the metal cylinder 702 is pressed by the extrusion spring 705 and the cone cylinder 704 and extends into the circular hole 8 corresponding to the surface of the baffle 5. Then start the cleaning motor 903 to rotate the connecting plate 904, so that the connecting plate 904 slides along the track of the semi-annular groove 906 with the rolling column 907 through the waist groove 905. During the movement of the rolling column 907, one end of the adjustment plate 909 is synchronously moved and deflected through the hinge rod 908. At this time, the middle part of the adjustment plate 909 slides inside the U-shaped guide block 910, and swings on the surface of the support plate 901 with the center position of the U-shaped guide block 910 as the axis point. When the rolling column 907 rotates to the limit end at the lower part of the semi-annular groove 906, the adjustment plate 909 is in a horizontal state.

[0069] S2, at this time, the adjusting plate 909 moves with the support ring 911 toward the circular hole 8 at the upper position of the baffle 5, so that the arc clamping plate 916 on the support ring 911 is inserted into the end of the filter cartridge 706 inside the circular hole 8. At the same time, the pressure rod 927 on the side wall of the adjusting plate 909 is pressed by the baffle 5, so that the pressure rod 927 moves with the adjusting frame 926 and the short rod 925. During the sliding process of the adjusting groove 928 on the surface of the adjusting frame 926 and the adjusting rod 929, the adjusting groove 928 on the surface of the adjusting frame 926 cooperates with the adjusting rod 929. The rod 929 with the adjusting tooth plate 930 meshes with the gear rod 917 to drive, so that the gear rod 917 rotates with the adjusting ring 912. In the process of the arc groove 913 on the surface of the adjusting ring 912 and the vertical groove 914 on the surface of the supporting ring 911, the sliding rod 915 moves with the arc clamping plate 916 inside the supporting ring 911. At this time, the two arc clamping plates 916 move back to back and fit the inner wall position of the clamping groove 707 at the end of the filter cartridge 706 to clamp the filter cartridge 706.

[0070] S3, during the movement of the short rod 925, the locking block 919 will translate inside the locking frame 918, so that the connecting strip 923 hinged on the surface of the locking frame 918 moves with the telescopic guide rod 921 to the end position of the locking groove 920 close to the pressure rod 927, and under the elastic compression of the compression spring 924, the telescopic guide rod 921 is restricted to the concave position of the locking groove 920, at this time, the arc clamping plate 916 keeps the clamping state, and then the cleaning motor 903 is started to reverse the connecting plate 904, so that the adjustment plate 909 and the clamped filter cartridge 706 are pulled out from the metal cylinder 702 position and then turned downward 90 degrees, so that the filter cartridge 706 is inserted into the interior of the sewage pipe 936, and then the surface of the support ring 911 overlaps the top of the sewage pipe 936 to seal the top of the sewage pipe 936;

[0071] S4. During the process of inserting the filter cartridge 706 into the sewage pipe 936, the filter cartridge 706 presses against the top of the push rod 932, so that the push rod 932 is pressed to move toward the inside of the air inlet pipe 931. At this time, the push rod 932 moves with the sealing cone ring 933 and releases the seal of the air inlet pipe 931, so that the gas inside the air inlet pipe 931 enters the upper position of the inner wall of the sewage pipe 936. Since the filter cartridge 706 is inserted into the conical surface position in the middle of the sewage pipe 936, the middle position of the sewage pipe 936 is sealed. At this time, the gas penetrates from the outer wall of the filter cartridge 706 into the inner core position of the filter cartridge 706, and the filter cartridge 706 is backwashed by the gas. The exhausted waste gas is discharged from the lower part of the sewage pipe 936. At the same time, the exhaust gas will rotate with the guide blade 938 during the exhaust process, so that the cleaning brush rod 937 at the axial position of the guide blade 938 brushes and cleans the inner core position of the filter cartridge 706.

[0072] S5, after the filter cartridge 706 is cleaned, the cleaning motor 903 is finally started to rotate, so that the adjustment plate 909 is turned 90 degrees and the cleaned filter cartridge 706 is inserted into the corresponding metal cylinder 702 from the circular hole 8 again. At this time, the pressure rod 927 is pressed again to move the locking block 919, so that the locking groove 920 on the locking block 919 cooperates with the telescopic guide rod 921 to slide and release the contact state with the concave position of the locking groove 920. When the adjustment plate 909 leaves the baffle 5 position with the pressure rod 927 When the locking block 919 is pressed by the compression spring 924, the telescopic guide rod 921 moves to the position of the locking groove 920 away from the side of the short rod 925. At this time, the moving locking block 919 brings the short rod 925 and the adjustment frame 926 to reset and move, so that the adjustment rod 929 brings the adjustment tooth plate 930 to reset and move and engage with the gear rod 917. The adjustment ring 912 is reversed to bring the two arc-shaped clamping plates 916 on the inner wall of the support ring 911 to move relative to each other and release the clamping of the filter cartridge 706, completing the installation after cleaning.

[0073] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An air filter device for an oxygen concentrator, comprising a support base (1), characterized in that: The top of the support seat (1) is rotatably connected to a mounting plate (2), the upper part of the support seat (1) is fixedly connected to a transposition motor (3), the rotation end of the transposition motor (3) is fixedly connected to a support rod (4), the middle part of the support rod (4) is fixedly connected to the axial position of the support seat (1), one end of the support rod (4) is rotatably connected to a baffle (5), and the side wall of the baffle (5) is fixedly connected to a cleaning box (6); A filter replacement mechanism (7) is movably connected between the surface of the mounting plate (2) and the baffle (5); a circular hole (8) is provided on the surface of the baffle (5) and is matched with the filter replacement mechanism (7); two circular holes (8) are provided, and the two circular holes (8) are symmetrically provided on the surface of the baffle (5); a cleaning mechanism (9) is movably connected inside the cleaning box (6) and is matched with the circular hole (8); The filter replacement mechanism (7) comprises a threaded mounting hole (701), wherein the number of the threaded mounting holes (701) is four, and the four threaded mounting holes (701) are equidistantly arranged on the surface of the mounting plate (2) along a circumference, wherein the inner threads of the threaded mounting holes (701) are connected to a metal cylinder (702), wherein one end of the metal cylinder (702) away from the threaded mounting hole (701) overlaps the side wall of the baffle (5), and one end of the metal cylinder (702) close to the threaded mounting hole (701) is fixedly connected to a telescopic tube (703). The telescopic end of the telescopic tube (703) is fixedly connected to a cone cylinder (704), a compression spring (705) is movably connected between the side wall of the cone cylinder (704) and the middle part of the telescopic tube (703), a filter cylinder (706) is movably inserted into the interior of the metal cylinder (702), one end of the filter cylinder (706) is sleeved on the end of the cone cylinder (704), the other end of the filter cylinder (706) is provided with a clamping groove (707), and the other end of the filter cylinder (706) extends to the inside of the corresponding circular hole (8); The cleaning mechanism (9) comprises a support plate (901), the support plate (901) being fixedly connected to the upper part of the inner wall of the cleaning box (6), the middle part of the support plate (901) being rotatably connected to a shaft (902), one end of the shaft (902) being fixedly connected to a cleaning motor (903), the surface of the cleaning motor (903) being fixedly connected to the inner wall of the cleaning box (6), the other end of the shaft (902) passing through the support plate (901) and being fixedly connected to a connecting plate (904), the surface of the connecting plate (904) being provided with a waist-shaped groove (905); A semi-annular groove (906) is provided in the middle of the support plate (901); a rolling column (907) is movably connected between the semi-annular groove (906) and the waist-shaped groove (905); a hinge rod (908) is fixedly connected to the axis of the rolling column (907); one end of the hinge rod (908) is rotatably connected to an adjustment plate (909); a U-shaped guide block (910) is slidably connected to the middle of the adjustment plate (909); and a side wall of the U-shaped guide block (910) is rotatably connected to the surface of the support plate (901); The end of the adjustment plate (909) away from the hinge rod (908) is fixedly connected to a support ring (911), and one side of the support ring (911) is rotatably connected to an adjustment ring (912), and the surface of the adjustment ring (912) is symmetrically provided with arc grooves (913), and the side of the support ring (911) close to the adjustment ring (912) is symmetrically provided with vertical grooves (914), and the two vertical grooves (914) correspond to the two arc grooves (913) one by one, and a sliding rod (915) is movably connected between the vertical grooves (914) and the corresponding arc grooves (913), and one end of the sliding rod (915) is fixedly connected to an arc clamping plate (916) matched with the circular hole (8), and the surface of the arc clamping plate (916) is slidably connected to the inner wall of the support ring (911); A gear rod (917) is fixedly connected to a side of the adjustment ring (912) away from the support ring (911); a locking frame (918) is fixedly connected to a side of the adjustment plate (909) close to the adjustment ring (912); a locking block (919) is slidably connected to the interior of the locking frame (918); a locking groove (920) is provided on the surface of the locking block (919); a telescopic guide rod (921) is slidably connected to the interior of the locking groove (920); and a wedge block (922) that matches the telescopic guide rod (921) is fixedly connected to the inner wall of the locking groove (920); One end of the telescopic guide rod (921) is fixedly connected to a connecting strip (923), one end of the connecting strip (923) is hinged to the surface of the locking frame (918), a compression spring (924) is fixedly connected between the inner wall of the locking frame (918) and the side wall of the locking block (919), a short rod (925) is fixedly connected to the side of the locking block (919) away from the compression spring (924), one end of the short rod (925) passes through the locking frame (918) and is fixedly connected to an adjustment frame (926). ), a pressure rod (927) matched with the baffle (5) is fixedly connected to one side of the adjustment frame (926) away from the short rod (925), and adjustment grooves (928) are symmetrically provided on both sides of the adjustment frame (926), an adjustment rod (929) is slidably connected between the two adjustment grooves (928), one end of the adjustment rod (929) passes through the adjustment plate (909) and is fixedly connected to an adjustment tooth plate (930), and the side wall of the adjustment tooth plate (930) is meshed with the side wall of the gear rod (917); The side wall at the lower part of the cleaning box (6) is fixedly connected to an air inlet pipe (931), a push rod (932) is slidably connected to the inside of the air inlet pipe (931), a sealing cone ring (933) is fixedly connected to the middle part of the push rod (932), the surface of the sealing cone ring (933) overlaps the inner wall of the air inlet pipe (931), a retaining ring (934) is fixedly connected to the inner wall of the air inlet pipe (931), one end of the push rod (932) is movably inserted into the middle part of the retaining ring (934), and a pressing spring (935) is movably connected between the side wall of the sealing cone ring (933) and the side wall of the retaining ring (934); A sewage pipe (936) matched with the support ring (911) is fixedly connected to the bottom of the cleaning box (6); the axis of the sewage pipe (936) is arranged at the same level as the center line of the U-shaped guide block (910); one end of the air inlet pipe (931) extends to the upper part of the inner wall of the sewage pipe (936); the other end of the push rod (932) extends to the inside of the sewage pipe (936); the lower part of the inner wall of the sewage pipe (936) is rotatably connected to a cleaning brush rod (937); the bottom of the cleaning brush rod (937) is fixedly connected to a guide fan blade (938).

2. An air filter device for an oxygen concentrator according to claim 1, characterized in that: A sealing gasket is fixedly connected to the surface of the baffle (5), and one end of the metal cylinder (702) overlaps the surface of the sealing gasket; A connecting head is fixedly connected to the middle portion of the outer wall of the metal cylinder (702).

3. An air filter device for an oxygen concentrator according to claim 2, characterized in that: The other end of the filter cartridge (706) is configured to be conical, and the middle portion of the filter cartridge (706) is configured to be a filter portion.

4. The air filter device for an oxygen concentrator according to claim 3, characterized in that: A hinge hole is provided on the surface of the adjustment plate (909), a connecting bearing is fixedly connected to the inner wall of the hinge hole, and the inner ring of the connecting bearing is fixedly connected to the surface of the hinge rod (908); Slide grooves are provided on both sides of the adjustment plate (909), and sliding blocks are fixedly connected to both sides of the inner wall of the U-shaped guide block (910), and the sliding blocks are slidably connected inside the corresponding slide grooves; A rotating shaft is fixedly connected to one side of the U-shaped guide block (910) close to the support plate (901), and the rotating shaft is rotatably connected to the surface of the support plate (901).

5. An air filter device for an oxygen concentrator according to claim 4, characterized in that: The inner wall of the support ring (911) is provided with a moving groove, a moving block is fixedly connected to the surface of the arc-shaped clamping plate (916), the arc-shaped clamping plate (916) is slidably connected to the inside of the moving groove via the moving block, and an anti-slip rubber pad is fixedly connected to the surface of the arc-shaped clamping plate (916); A side of the support ring (911) close to the adjustment ring (912) is fixedly connected to a support bearing, an outer ring of the adjustment ring (912) is fixedly connected to an inner ring of the support bearing, and a side of the support ring (911) away from the adjustment ring (912) is configured as a conical surface.

6. An air filter device for an oxygen concentrator according to claim 5, characterized in that: The middle portion of the inner wall of the sewage discharge pipe (936) is configured as a conical surface, and the top of the push rod (932) close to one end of the sewage discharge pipe (936) is configured as an inclined surface; A rectangular block is symmetrically fixedly connected to the surface of the push rod (932), and a rectangular groove is symmetrically opened on the inner wall of the air intake pipe (931), and the rectangular block is slidably connected to the inside of the corresponding rectangular groove.

7. The method for using the air filter device for an oxygen concentrator according to claim 6, comprising the following steps: S1. When in use, first start the transposition motor (3) to rotate the filter cartridge (706) to be replaced on the mounting plate (2) to the position of the upper circular hole (8). At this time, the filter cartridge (706) inside the metal cylinder (702) is pressed by the extrusion spring (705) and the cone cylinder (704) to extend into the corresponding circular hole (8) on the surface of the baffle (5). Then start the cleaning motor (903) to rotate the connecting plate (904), so that the connecting plate (904) passes through the waist groove (905) and the rolling column (904). 07) slides along the track of the semi-annular groove (906). During the movement of the rolling column (907), one end of the adjustment plate (909) is synchronously moved and deflected by the hinge rod (908). At this time, the middle part of the adjustment plate (909) slides inside the U-shaped guide block (910) and swings on the surface of the support plate (901) with the center position of the U-shaped guide block (910) as the axis point. When the rolling column (907) rotates to the limit end of the lower part of the semi-annular groove (906), the adjustment plate (909) is in a horizontal state; S2. At this time, the adjusting plate (909) moves with the support ring (911) toward the circular hole (8) at the upper position of the baffle (5), so that the arc-shaped clamping plate (916) on the support ring (911) is inserted into the end of the filter cartridge (706) inside the circular hole (8). At the same time, the pressure rod (927) on the side wall of the adjusting plate (909) is pressed by the baffle (5), so that the pressure rod (927) moves with the adjusting frame (926) and the short rod (925). During the sliding process of the adjusting groove (928) on the surface of the adjusting frame (926) and the adjusting rod (929), the adjusting groove (928) on the surface of the adjusting frame (926) and the adjusting rod (929) are adjusted. The section rod (929) carries the adjusting tooth plate (930) and meshes with the gear rod (917) to drive the gear rod (917) to rotate with the adjusting ring (912). During the matching process between the arc groove (913) on the surface of the adjusting ring (912) and the vertical groove (914) on the surface of the support ring (911), the sliding rod (915) carries the arc clamping plate (916) to move inside the support ring (911). At this time, the two arc clamping plates (916) move in opposite directions to fit the inner wall of the clamping groove (707) at the end of the filter cartridge (706), thereby clamping the filter cartridge (706); S3, during the movement of the short rod (925), the locking block (919) moves horizontally inside the locking frame (918), so that the connecting strip (923) hinged on the surface of the locking frame (918) moves with the telescopic guide rod (921) to the end position of the locking groove (920) close to the pressure rod (927), and under the elastic compression of the compression spring (924), the telescopic guide rod (921) is restricted to the concave position of the locking groove (920), at which time the arc-shaped clamping plate (916) remains in a clamping state, and then the cleaning motor (903) is started to reverse with the connecting plate (904), so that the adjustment plate (909) and the clamped filter cartridge (706) are pulled out from the metal cylinder (702) and then turned downward by ninety degrees, so that the filter cartridge (706) is inserted into the interior of the sewage pipe (936), and then the surface of the support ring (911) overlaps the top of the sewage pipe (936), so that the top of the sewage pipe (936) is sealed; S4. During the process of inserting the filter cartridge (706) into the sewage pipe (936), the filter cartridge (706) presses against the top of the push rod (932), causing the push rod (932) to move toward the inside of the air inlet pipe (931) under pressure. At this time, the push rod (932) moves with the sealing cone ring (933) and releases the seal on the air inlet pipe (931), allowing the gas inside the air inlet pipe (931) to enter the upper part of the inner wall of the sewage pipe (936). Since the filter cartridge (706) is inserted into the sewage pipe (936), The conical surface in the middle seals the middle of the sewage pipe (936), and at this time, the gas penetrates from the outer wall of the filter cartridge (706) into the inner core of the filter cartridge (706), and the gas backwashes the filter cartridge (706), and the discharged waste gas is discharged from the lower part of the sewage pipe (936). At the same time, the waste gas will rotate with the guide blade (938) during the exhaust process, so that the cleaning brush rod (937) at the axial position of the guide blade (938) brushes and cleans the inner core of the filter cartridge (706); S5. After the filter cartridge (706) is cleaned, the cleaning motor (903) is started to rotate, so that the adjustment plate (909) is turned 90 degrees and the cleaned filter cartridge (706) is inserted into the corresponding metal cartridge (702) from the circular hole (8) again. At this time, the pressure rod (927) is pressed again to move the locking block (919), so that the locking groove (920) on the locking block (919) and the telescopic guide rod (921) slide together and release the contact state with the concave position of the locking groove (920). When the adjustment plate (909) leaves the baffle (5) with the pressure rod (927), When the locking block (919) is pressed by the compression spring (924), the telescopic guide rod (921) moves to a position on the locking groove (920) away from the side of the short rod (925). At this time, the moving locking block (919) brings the short rod (925) and the adjustment frame (926) to reset and move, so that the adjustment rod (929) brings the adjustment tooth plate (930) to reset and move and mesh with the gear rod (917). The adjustment ring (912) reverses and brings the two arc-shaped clamping plates (916) on the inner wall of the support ring (911) to move relatively and release the clamping of the filter cartridge (706), completing the installation after cleaning.

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