Filtering device of oxygen generator

Abstract

The utility model relates to the field of oxygenerators, in particular to an oxygenerator filter device which comprises two filter boxes arranged symmetrically, filter plates are fixed in the filter boxes, filter elements are fixed in the filter boxes above the filter plates, and gas distribution pipes with valves are fixed on the filter boxes below the filter plates. The tail ends of the gas distribution pipes are fixed to the gas inlet pipe, exhaust pipes with valves are fixed to the tops of the filter boxes, the tail ends of the exhaust pipes are connected with the gas outlet pipe, and a blow-off pipe with a valve is further fixed to the bottom, below the filter plate, of each filter box. By arranging the two filter boxes, the filter boxes can be backflushed one by one through high-pressure gas, impurities adhered to the filter plates can be flushed off, and self-cleaning of the device is achieved.

Description

Technical Field

[0001] The invention relates to the field of oxygen concentrators, and in particular to a filtering device for an oxygen concentrator. Background Art

[0002] Oxygen concentrator is a type of machine for producing oxygen, and 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. In general, because it is mostly used to produce oxygen, people are accustomed to calling it an oxygen concentrator. Patent application number: CN201921052843.0 discloses a secondary filtration device for an oxygen concentrator, including a filter box and a box cover, slots A are symmetrically installed at both ends of the left side of the filter box, and the number of slots A is three groups, and filter cotton is inserted in slot A, slots B are symmetrically installed at both ends of the right side of the filter box, and the number of slots B is three groups, and a polyester fiber layer is inserted in slot B, and movable grooves are opened on both sides of the filter box, and the number of movable grooves is three groups, and a spring is fixedly installed in the movable groove, and a round ball is fixedly installed at the outer end of the spring, and semicircular grooves are opened on both sides of the box cover, and the number of semicircular grooves is three groups. This type of filter device does not have an automatic cleaning structure. After using it for a period of time, the filter cotton needs to be pulled out from slot A and the polyester fiber layer in slot B can be pulled out to replace or clean the filter cotton and the polyester fiber layer.

[0003] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide an oxygen concentrator filtering device.

[0005] The present invention can be implemented by the following technical solutions:

[0006] The present invention discloses an oxygen concentrator filtering device, comprising two symmetrically arranged filter boxes, wherein filter plates are fixed in the filter boxes, filter elements are fixed in the filter boxes above the filter plates, air distribution pipes with valves are fixed on the filter boxes below the filter plates, ends of the air distribution pipes are fixed to the air inlet pipes, exhaust pipes with valves are fixed on the tops of the filter boxes, ends of the exhaust pipes are connected to the air outlet pipes, and a sewage pipe with a valve is also fixed to the bottom of the filter box below the filter plates. When the filter box is in use, the outside air is extracted and pressurized by the compressor and then enters the filter box through the air inlet pipe, is filtered through the filter plate, and then is filtered through the filter element. The filtered air is supplied to the oxygen concentrator for use. After the filtering device has been used for a period of time, the valve on the air distribution pipe of the left filter box is closed, the valve on the air outlet pipe is closed, and the valve on the left sewage pipe is opened. After the compressed gas passes through the right filter box and is filtered, the compressed gas passes through the right exhaust pipe and then enters the left filter box through the left exhaust pipe. After the compressed gas enters the left filter box, the air flow flows from the top of the filter box to the bottom of the filter box, and the filter plate and the filter element are recoiled by the high-pressure airflow to blow off the dust impurities adhered to the through holes of the filter plate and the bottom of the filter plate, and the dust impurities are discharged through the sewage pipe on the left. Similarly, when it is necessary to clean the impurities in the right filter box, close the valve on the air distribution pipe on the right filter box, and at the same time close the valve on the air outlet pipe, open the valve on the right sewage pipe, flush the right filter box with high-pressure airflow, and discharge the impurities through the sewage pipe after flushing them.

[0007] Preferably, a rotating shaft is further provided in the filter box below the filter plate, a mounting plate is fixed on the top of the rotating shaft, a plurality of scrapers used in conjunction with the filter plate are fixed on the mounting plate, and a plurality of fan blades are also fixed on the rotating shaft in the sewage pipe. When cleaning impurities, after the airflow passes through the fan blade position, the fan blade drives the rotating shaft to rotate, and the scraper rotates with the rotating shaft, and the scraper scrapes the impurities off at the bottom of the filter plate.

[0008] Compared with the prior art, the present invention has the following advantages:

[0009] By setting up two filter boxes, it is possible to backwash the filter boxes one by one with high-pressure gas, so that impurities adhering to the filter plate can be washed off, thereby achieving self-cleaning of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] Figure 2 It is a left side view of the present invention;

[0013] Figure 3 for Figure 2Sectional view at AA;

[0014] In the figure: 1. filter box; 2. filter plate; 3. filter element; 4. air distribution pipe; 5. air inlet pipe; 6. valve; 7. exhaust pipe; 8. air outlet pipe; 9. sewage pipe; 10. rotating shaft; 11. mounting plate; 12. scraper; 13. fan blade; DETAILED DESCRIPTION

[0015] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0016] Embodiment 1:

[0017] like Figures 1 to 3 As shown, the present embodiment discloses an oxygen concentrator filtering device, comprising two symmetrically arranged filter boxes 1, filter plates 2 are fixed in the filter boxes 1, filter elements 3 are fixed in the filter boxes 1 above the filter plates 2, air distribution pipes 4 with valves 6 are fixed on the filter boxes 1 below the filter plates 2, the ends of the air distribution pipes 4 are fixed to the air inlet pipes 5, exhaust pipes 7 with valves 6 are fixed on the tops of the filter boxes 1, the ends of the exhaust pipes 7 are connected to the air outlet pipes 8, and a sewage pipe 9 with a valve 6 is also fixed to the bottom of the filter box 1 below the filter plates 2. When the filter box 1 is in use, the outside air is extracted and pressurized by the compressor and then enters the filter box 1 through the air inlet pipe 5, is filtered by the filter plate 2, and then is filtered by the filter element 3. The filtered air is supplied to the oxygen concentrator for use. After the filtering device has been used for a period of time, the valve 6 on the air distribution pipe 4 of the left filter box 1 is closed, the valve 6 on the air outlet pipe 8 is closed, and the valve 6 on the left sewage pipe 9 is opened. After the compressed gas is filtered by the right filter box 1, the compressed gas passes through the right exhaust pipe 7 and then enters the left filter box 1 through the left exhaust pipe 7. The compressed gas enters The rear airflow in the left filter box 1 flows from the top of the filter box 1 to the bottom of the filter box 1, and the high-pressure airflow backwashes the filter plate 2 and the filter element 3, and blows off the dust impurities adhering to the through holes of the filter plate 2 and the bottom of the filter plate 2, and the dust impurities are discharged through the left drain pipe 9. Similarly, when it is necessary to clean the impurities in the right filter box 1, close the valve 6 of the air distribution pipe 4 on the right filter box 1, and at the same time close the valve 6 on the outlet pipe 8, open the valve 6 on the right drain pipe 9, and flush the right filter box 1 with high-pressure airflow to flush the impurities and discharge them through the drain pipe 9.

[0018] Embodiment 2:

[0019] This embodiment discloses an oxygen concentrator filter device. Based on the structure and principle of embodiment 1, a rotating shaft 10 is further provided in the filter box 1 below the filter plate 2 of this embodiment. A mounting plate 11 is fixed on the top of the rotating shaft 10. A plurality of scrapers 12 used in conjunction with the filter plate 2 are fixed on the mounting plate 11. A plurality of fan blades 13 are also fixed on the rotating shaft 10 in the sewage pipe 9. When cleaning impurities, after the airflow passes through the fan blades 13, the fan blades 13 drive the rotating shaft 10 to rotate, and the scraper 12 rotates with the rotating shaft 10. The scraper 12 scrapes the bottom of the filter plate 2 to scrape off the impurities.

[0020] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. An oxygen concentrator filter device, characterized in that: It comprises two filter boxes which are symmetrically arranged, filter plates being fixed in the filter boxes, filter elements being fixed in the filter boxes above the filter plates, air distribution pipes with valves being fixed on the filter boxes below the filter plates, ends of the air distribution pipes being fixed to the air inlet pipes, exhaust pipes with valves being fixed on the tops of the filter boxes, ends of the exhaust pipes being connected to the air outlet pipes, and a sewage pipe with a valve being fixed to the bottom of the filter box below the filter plates.

2. The oxygen concentrator filter device according to claim 1, characterized in that: A rotating shaft is also arranged in the filter box below the filter plate, a mounting plate is fixed on the top of the rotating shaft, a plurality of scrapers used in conjunction with the filter plate are fixed on the mounting plate, and a plurality of fan blades are also fixed on the rotating shaft in the sewage pipe.

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