Air filtering device for medical oxygen generator

Abstract

The utility model relates to air filtering technical field, and disclose a kind of air filtering device for medical oxygen generator, including shell, the shell bottom is fixedly connected with exhaust pipe, the shell inside is provided with filter mechanism, the shell top is provided with sealing mechanism, the filter mechanism includes support frame, the support frame is fixedly connected in shell inside, the support frame top is slidably connected with mounting seat, the mounting seat is slidably connected in shell inside, the mounting seat top is fixedly connected with connecting frame, when using, when medical oxygen generator is used, need to carry out filtering work to air, composite fiber filter frame and non-woven fabric filter core form double filtration structure, can carry out progressive depth purification to the air of entering oxygen generator, non-woven fabric filter core can preliminarily filter larger particulate matter, dust and other impurities in air, composite fiber filter frame can further adsorb fine particles, peculiar smell and part of microorganism.

Description

Technical Field

[0001] This utility model relates to the field of air filtration technology, specifically an air filtration device for a medical oxygen concentrator. Background Technology

[0002] In the medical field, medical oxygen concentrators are key equipment for providing oxygen support to patients. The cleanliness of the oxygen they produce is directly related to the patient's treatment safety and effectiveness. Air usually contains a variety of impurities such as dust, particulate matter, microorganisms, and odors. If these impurities enter the oxygen concentrator directly without effective filtration, it may not only affect the service life of the core components inside the oxygen concentrator, but may also lead to a decrease in the purity of the produced oxygen, or even introduce pollutants, posing potential risks to the patient's respiratory tract and physical health.

[0003] Currently, the air filtration devices in existing medical oxygen concentrators still have certain limitations in practical applications. Some filtration devices only use a single filter layer structure, which makes it difficult to achieve deep air purification, especially for impurities such as fine particles and microorganisms. This makes it difficult to meet the high air cleanliness requirements of medical-grade oxygen. In addition, the installation structure of some filter components is complicated, and the operation is cumbersome when cleaning or replacing filter materials. This not only increases the maintenance workload of medical staff, but may also affect the sealing of the filter device due to inconvenient disassembly, thereby affecting the filtration efficiency.

[0004] According to the patent application published on the Internet, an air filtration device for an oxygen concentrator (authorization announcement number: CN221244385U) is described as including an "air filter body, an air inlet box", etc., to achieve filtration.

[0005] Regarding the above description, the applicant believes the following issues exist:

[0006] The air filtration device for the oxygen concentrator uses an air filter body and an air intake box to perform filtration. During use, this device filters air through a filter screen. The single filter layer structure makes it difficult to achieve deep air purification, especially for fine particles, microorganisms, and other impurities. It cannot meet the high requirements for air cleanliness. Although the filter screen can be cleaned, impurities can penetrate into the filter screen during the cleaning process, causing blockage. Furthermore, it is not easy to disassemble, which affects the filtration effect. Therefore, this device needs to be improved. Utility Model Content

[0007] The purpose of this invention is to provide an air filtration device for a medical oxygen generator to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an air filtration device for a medical oxygen generator, comprising a housing, an exhaust pipe fixedly connected to the bottom of the housing, a filtration mechanism disposed inside the housing, and a sealing mechanism disposed at the top of the housing;

[0009] The filtration mechanism includes a support frame, which is fixedly connected to the inner side of the housing. A mounting base is slidably connected to the top of the support frame, and the mounting base is slidably connected to the inner side of the housing. A connecting frame is fixedly connected to the top of the mounting base, and a mounting cylinder is fixedly connected to the top of the mounting base. A non-woven filter element is slidably connected to the periphery of the mounting cylinder. Fixing blocks are fixedly connected to the left and right sides of the top of the mounting base. A fixing shaft is threaded inside the fixing block. A connecting ring is fixedly connected to the top of the inner side of the mounting base, and the connecting ring is slidably connected to the inner side of the support frame. A composite fiber filter frame is slidably connected to the bottom of the connecting ring. Connecting arms are fixedly connected to the left and right sides of the composite fiber filter frame, and the connecting arms are slidably connected to the inside of the mounting base and the fixing blocks.

[0010] Preferably, the fixed shaft passes through the inside of the connecting arm, and the support frame is ring-shaped, which facilitates ensuring the stability between the connecting arm and the fixed block through the fixed shaft.

[0011] Preferably, the mounting cylinder has ventilation grooves inside and at the bottom, and the mounting base has a through hole inside, with the through hole located at the bottom of the ventilation groove at the bottom of the mounting cylinder, so that the air filtered by the non-woven filter element can enter the composite fiber filter frame through the ventilation groove and the through hole.

[0012] Preferably, the mounting cylinder and non-woven filter element are provided in five sets and symmetrically distributed on the top of the mounting base, which facilitates the improvement of filtration efficiency.

[0013] Preferably, the sealing mechanism includes a sealing cover, which is slidably connected to the top of the outer shell. An air inlet pipe is fixedly connected to the top of the sealing cover. A telescopic rod is fixedly connected to the top of the inner part of the sealing cover. A limit frame is fixedly connected to the bottom of the telescopic rod. The limit frame is located on the top of the non-woven filter element. A spring is sleeved around the telescopic rod. A fixing frame is fixedly connected to the left side of the sealing cover. A fixing seat is slidably connected to the bottom periphery of the fixing frame. The fixing seat is fixedly connected to the top left side of the outer shell. A limit shaft is threadedly connected inside the fixing frame.

[0014] Preferably, the bottom of the limiting frame is in contact with the top of the non-woven filter core, the top of the spring is fixedly connected to the top of the sealing cover, and the bottom of the spring is fixedly connected to the top of the limiting frame, so that the limiting frame can fix the non-woven filter core.

[0015] Preferably, the limiting shaft passes through the interior of the fixed seat, and two sets of the fixed frame, limiting shaft and fixed seat are provided and symmetrically distributed on the left and right sides of the sealing cover, so as to ensure the stability between the fixed frame and the fixed seat through the limiting shaft.

[0016] Compared with the prior art, this utility model provides an air filtration device for a medical oxygen concentrator, which has the following beneficial effects:

[0017] 1. This medical oxygen concentrator's air filtration device, through its designed filtration mechanism, forms a dual filtration structure with a composite fiber filter frame and a non-woven fabric filter core when the oxygen concentrator is in use and air filtration is required. This structure provides progressive deep purification of the air entering the oxygen concentrator. The non-woven fabric filter core initially filters larger particles, dust, and other impurities from the air, while the composite fiber filter frame further adsorbs fine particles, odors, and some microorganisms, significantly improving filtration accuracy and purification effect, effectively ensuring the cleanliness of the medical oxygen. Five symmetrically distributed mounting cylinders and non-woven fabric filter cores increase the contact area between the air and the filter material, accelerating the air filtration speed and improving the working efficiency of the oxygen concentrator. Simultaneously, the mounting base slides to the inside of the outer casing, and the threaded connection structure of the fixing block, fixing shaft, and connecting arm makes the installation and disassembly of the non-woven fabric filter core and composite fiber filter frame convenient and efficient, facilitating subsequent cleaning and replacement of the filter components, reducing maintenance difficulty and cost. The airflow channel design with ventilation slots and through holes ensures smooth air circulation.

[0018] 2. The air filtration device for this medical oxygen concentrator uses a sealing mechanism. The sealing cover is securely connected to the outer shell via a fixing frame, a fixing seat, and a limiting shaft. Combined with the telescopic rod and spring, the limiting frame presses tightly against the top of the non-woven filter element, fixing it in place. This not only ensures the airtightness of the outer shell and effectively prevents unfiltered air from leaking through gaps, ensuring the integrity of the filtration path, but also prevents the limiting frame from excessively squeezing and damaging the filter element through the elastic buffering effect of the spring, thus extending the service life of the filter components. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the filter mechanism.

[0023] Figure 4 This is a schematic diagram of the top structure of the support frame;

[0024] Figure 5 This is a schematic diagram of the bottom structure of the mounting base;

[0025] Figure 6 This is a schematic diagram of the bottom structure of the connecting ring;

[0026] Figure 7 This is a schematic diagram of the sealing mechanism.

[0027] In the diagram: 1. Outer shell; 2. Exhaust pipe; 3. Filtering mechanism; 4. Sealing mechanism; 31. Support frame; 32. Mounting base; 33. Non-woven filter element; 34. Connecting frame; 35. Mounting cylinder; 36. Fixing block; 37. Fixing shaft; 38. Connecting ring; 39. Composite fiber filter frame; 391. Connecting arm; 41. Sealing cover; 42. Air inlet pipe; 43. Telescopic rod; 44. Spring; 45. Limiting frame; 46. Fixing frame; 47. Limiting shaft; 48. Fixing base. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] This utility model provides the following technical solution:

[0031] Example 1

[0032] Please see Figure 1-7This utility model provides a technical solution: an air filtration device for a medical oxygen generator, including a housing 1, an exhaust pipe 2 fixedly connected to the bottom of the housing 1, a filtration mechanism 3 inside the housing 1, and a sealing mechanism 4 on the top of the housing 1;

[0033] The filter mechanism 3 includes a support frame 31, which is fixedly connected to the inside of the housing 1. A mounting base 32 is slidably connected to the top of the support frame 31. The mounting base 32 is slidably connected to the inside of the housing 1. A connecting frame 34 is fixedly connected to the top of the mounting base 32. A mounting cylinder 35 is fixedly connected to the top of the mounting base 32. A non-woven filter element 33 is slidably connected to the periphery of the mounting cylinder 35. Fixing blocks 36 are fixedly connected to the left and right sides of the top of the mounting base 32. A fixing shaft 37 is threadedly connected inside the fixing block 36. A connecting ring 38 is fixedly connected to the top of the mounting base 32. The connecting ring 38 is slidably connected to the inside of the support frame 31. A composite fiber filter frame 39 is slidably connected to the bottom of the connecting ring 38. Connecting arms 391 are fixedly connected to the left and right sides of the composite fiber filter frame 39. The connecting arms 391 are slidably connected to the inside of the mounting base 32 and the fixing blocks 36.

[0034] The fixed shaft 37 passes through the interior of the connecting arm 391, and the support frame 31 is ring-shaped, which facilitates the stability between the connecting arm 391 and the fixed block 36 through the fixed shaft 37.

[0035] Ventilation grooves are provided inside the mounting cylinder 35 and at its bottom, and a through hole is provided inside the mounting base 32. The through hole is located at the bottom of the ventilation groove at the bottom of the mounting cylinder 35, so that the air filtered by the non-woven filter element 33 can enter the composite fiber filter frame 39 through the ventilation groove and the through hole.

[0036] Five sets of mounting cylinders 35 and non-woven filter elements 33 are provided and symmetrically distributed on the top of mounting base 32 to improve filtration efficiency.

[0037] Example 2

[0038] Please see Figure 1-7 Furthermore, based on Embodiment 1, the sealing mechanism 4 further includes a sealing cover 41, which is slidably connected to the top of the outer shell 1. An air inlet pipe 42 is fixedly connected to the top of the sealing cover 41. A telescopic rod 43 is fixedly connected to the top of the inner part of the sealing cover 41. A limit frame 45 is fixedly connected to the bottom of the telescopic rod 43. The limit frame 45 is located on the top of the non-woven filter element 33. A spring 44 is sleeved around the telescopic rod 43. A fixing frame 46 is fixedly connected to the left side of the sealing cover 41. A fixing seat 48 is slidably connected to the bottom periphery of the fixing frame 46. The fixing seat 48 is fixedly connected to the top left side of the outer shell 1. A limit shaft 47 is threadedly connected inside the fixing frame 46.

[0039] The bottom of the limiting frame 45 is in contact with the top of the non-woven filter element 33. The top of the spring 44 is fixedly connected to the top of the sealing cover 41, and the bottom of the spring 44 is fixedly connected to the top of the limiting frame 45, so that the non-woven filter element 33 can be fixed through the limiting frame 45.

[0040] The limiting shaft 47 passes through the interior of the fixed base 48. There are two sets of fixed frame 46, limiting shaft 47 and fixed base 48, which are symmetrically distributed on the left and right sides of the sealing cover 41, so as to ensure the stability between the fixed frame 46 and the fixed base 48 through the limiting shaft 47.

[0041] In actual operation, when this device is used, when a medical oxygen concentrator is used, and air filtration is required, the outer shell 1 is first fixed in the position of use by external fixing equipment. The composite fiber filter frame 39 is first slidably connected from the bottom of the mounting base 32 to the bottom of the connecting ring 38, and the connecting arm 391 is slidably connected to the inside of the mounting base 32 and the fixing block 36. The fixing block 36 and the connecting arm 391 are fixed by the fixing shaft 37, and the composite fiber filter frame 39 can be installed. At this time, the connecting frame 34 is held and the connecting frame 34 drives the mounting base 32 to slide and connect to the inside of the outer shell 1, and slides and connects to the top of the support frame 31 to ensure the stability of the mounting base 32. At the same time, the non-woven filter core 33 is slidably connected to the outside of the mounting cylinder 35.

[0042] After installation, the sealing cover 41 can be slidably connected to the top of the outer shell 1. When the sealing cover 41 moves, it will drive the bottom of the limiting frame 45 to contact the top of the non-woven filter element 33 and squeeze the telescopic rod 43 and the spring 44 until the sealing cover 41 is completely on the top of the outer shell 1. This not only ensures the sealing of the outer shell 1 and effectively prevents unfiltered air from leaking from the gaps, ensuring the integrity of the filtration path, but also prevents the limiting frame 45 from over-compressing the filter element and damaging it through the elastic buffering effect of the spring 44, thus extending the service life of the filter components.

[0043] When the sealing cover 41 moves, it will drive the fixing frame 46 to slide and connect inside the fixing seat 48, and fix the fixing frame 46 and the fixing seat 48 through the limiting shaft 47 to ensure the stability of the sealing cover 41. At this time, it can be connected to the air inlet pipe 42 through the external air supply pipe, and at the same time, the exhaust pipe 2 is connected to the air inlet pipe 42 of the oxygen generator.

[0044] When air enters the outer casing 1, the composite fiber filter frame 39 and the non-woven fabric filter core 33 form a dual filtration structure, which can perform progressive deep purification of the air entering the oxygen concentrator. The non-woven fabric filter core 33 can initially filter larger particles, dust and other impurities in the air. The air that has passed through the ventilation groove and through the holes will enter the composite fiber filter frame 39, further adsorbing fine particles, odors and some microorganisms, which greatly improves the filtration accuracy and purification effect, effectively ensuring the cleanliness of medical oxygen. The five symmetrically distributed installation cylinders 35 and non-woven fabric filter cores 33 increase the contact area between air and filter materials, accelerate the air filtration speed and improve the working efficiency of the oxygen concentrator.

[0045] When it is necessary to replace and clean the composite fiber filter frame 39 and the non-woven fabric filter element 33, simply reverse the steps described above; the operation is convenient.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An air filtration device for a medical oxygen concentrator, comprising a housing (1), characterized in that: An exhaust pipe (2) is fixedly connected to the bottom of the outer shell (1), a filter mechanism (3) is provided inside the outer shell (1), and a sealing mechanism (4) is provided at the top of the outer shell (1). The filter mechanism (3) includes a support frame (31), which is fixedly connected to the inside of the outer shell (1). A mounting base (32) is slidably connected to the top of the support frame (31). The mounting base (32) is slidably connected to the inside of the outer shell (1). A connecting frame (34) is fixedly connected to the top of the mounting base (32). A mounting cylinder (35) is fixedly connected to the top of the mounting base (32). A non-woven filter element (33) is slidably connected to the periphery of the mounting cylinder (35). Fixing blocks (36) are fixedly connected to the left and right sides of the top of the mounting base (32). A fixing shaft (37) is threaded inside the fixing block (36). A connecting ring (38) is fixedly connected to the top of the mounting base (32). The connecting ring (38) is slidably connected to the inside of the support frame (31). A composite fiber filter frame (39) is slidably connected to the bottom of the connecting ring (38). Connecting arms (391) are fixedly connected to the left and right sides of the composite fiber filter frame (39). The connecting arms (391) are slidably connected to the inside of the mounting base (32) and the fixing block (36).

2. The air filtration device for a medical oxygen concentrator according to claim 1, characterized in that: The fixed shaft (37) passes through the inside of the connecting arm (391), and the support frame (31) is annular.

3. The air filtration device for a medical oxygen concentrator according to claim 1, characterized in that: Ventilation grooves are provided inside the mounting cylinder (35) and at the bottom, and a through hole is provided inside the mounting base (32), with the through hole located at the bottom of the ventilation groove at the bottom of the mounting cylinder (35).

4. The air filtration device for a medical oxygen concentrator according to claim 1, characterized in that: The mounting cylinder (35) and the non-woven filter element (33) are provided in five sets and are symmetrically distributed on the top of the mounting base (32).

5. An air filtration device for a medical oxygen concentrator according to claim 1, characterized in that: The sealing mechanism (4) includes a sealing cover (41), which is slidably connected to the top of the outer shell (1). An air inlet pipe (42) is fixedly connected to the top of the sealing cover (41). A telescopic rod (43) is fixedly connected to the top of the inner part of the sealing cover (41). A limit frame (45) is fixedly connected to the bottom of the telescopic rod (43). The limit frame (45) is located on the top of the non-woven filter core (33). A spring (44) is sleeved around the telescopic rod (43). A fixing frame (46) is fixedly connected to the left side of the sealing cover (41). A fixing seat (48) is slidably connected to the bottom periphery of the fixing frame (46). The fixing seat (48) is fixedly connected to the top left side of the outer shell (1). A limit shaft (47) is threadedly connected inside the fixing frame (46).

6. An air filtration device for a medical oxygen concentrator according to claim 5, characterized in that: The bottom of the limiting frame (45) is in contact with the top of the non-woven filter core (33), the top of the spring (44) is fixedly connected to the top of the sealing cover (41), and the bottom of the spring (44) is fixedly connected to the top of the limiting frame (45).

7. An air filtration device for a medical oxygen concentrator according to claim 5, characterized in that: The limiting shaft (47) passes through the inside of the fixed seat (48). The fixed frame (46), the limiting shaft (47) and the fixed seat (48) are provided in two sets and are symmetrically distributed on the left and right sides of the sealing cover (41).

Images