Multi-stage filter element assembly for medical oxygen generator

Abstract

The utility model discloses a multistage filter element assembly for a medical oxygen generator, which is used for an oxygen generator body, one side of the oxygen generator body is fixedly connected with an air inlet net, the inside of the oxygen generator body is fixedly connected with a blocking frame, and the inside of the oxygen generator body is divided into a cavity and a sliding cavity by the blocking frame. External air is introduced into the oxygen generator body through the air inlet assembly, the air enters the multi-stage filter element assembly through the air inlet net, in the multi-stage filter element assembly, the air sequentially passes through the primary filter element, the HEPA filter element, the activated carbon filter element and the drying agent filter element, multi-stage filtering work is completed, the filtered oxygen enters the oxygen separator, and the oxygen separator is used for separating oxygen. Oxygen and nitrogen are separated under the action of the polyamide polymer membrane, finally separated oxygen is led out through the air outlet connecting port, and the multi-stage filter element assembly can effectively adapt to various working environments, meanwhile, the drying agent filter element arranged inside can effectively guarantee the dryness of the oxygen, and the service life of the oxygen is prolonged. And a worker can conveniently use and collect oxygen.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical oxygen generator technical field, concretely is medical oxygen generator with multistage filter filter core subassembly. BACKGROUND

[0002] Medical oxygen generator refers to a kind of medical equipment for providing oxygen, is widely used in hospital, clinic and family nursing, and its main function is to separate and concentrate oxygen in air, to provide stable, reliable oxygen source for patient needing oxygen support.

[0003] The filter assembly arranged in the existing medical oxygen generator is usually Zeolite filter core, the filter core can separate oxygen and nitrogen in air by physical adsorption, to extract oxygen with higher concentration, however, in actual use, Zeolite filter core is more dependent on working condition, is subject to working temperature and pressure, needs to work effectively under specific conditions, and is sensitive to humidity (moisture), too much moisture can affect its performance, need to ensure that air is dry, to solve the above problems, we propose a kind of medical oxygen generator with multistage filter filter core subassembly. UTILITY MODEL CONTENT

[0004] The utility model aims at providing medical oxygen generator with multistage filter filter core subassembly to solve the problems proposed in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: medical oxygen generator with multistage filter filter core subassembly is used for oxygen generator body, the side of oxygen generator body is fixedly connected with air inlet net, the inside of oxygen generator body is fixedly connected with barrier frame, the inside of oxygen generator body is separated into cavity and sliding cavity by barrier frame, the inside of cavity is provided with air inlet assembly, the inside of sliding cavity is slidably connected with multistage filter filter core subassembly, the input end of air inlet assembly is fixedly connected with air inlet net, the output end of air inlet assembly is fixedly connected with multistage filter filter core subassembly, the inside of oxygen generator body and the top of sliding cavity are fixedly installed with oxygen separator, the output end of multistage filter filter core subassembly is fixedly connected with oxygen separator, the output end of oxygen separator extends to the top of oxygen generator body and is fixedly connected with air outlet connector, the inside of oxygen generator body is provided with self-locking structure, the self-locking structure is used for locking multistage filter filter core subassembly, the bottom of oxygen generator body is provided with moving wheel.

[0006] As a further preferred of the technical solution, the multi-stage filtering filter core assembly comprises a filter box, a horizontal plate is fixedly connected between inner walls of the filter box, a primary filter core, a HEPA filtering filter core, an activated carbon filter core and a desiccant filter core are fixedly installed below the horizontal plate and inside the filter box, a limiting groove is formed in the top of the horizontal plate, a telescopic pipe is slidably connected between inner walls of the limiting groove, an input end of the telescopic pipe extends into the inside of the desiccant filter core, a sealing ring is fixedly connected to the outside of the telescopic pipe, and a return spring is fixedly connected to the outside of the telescopic pipe and between the sealing ring and the inner walls of the limiting groove.

[0007] As a further preferred of the technical solution, the air inlet assembly comprises a gas guide hopper, the gas guide hopper is fixedly connected to the inside of the cavity, an input end of the gas guide hopper is communicated with the air inlet net, a gas guide pipe is fixedly connected between the gas guide hopper and the multi-stage filtering filter core assembly, and an air pressure pump is fixedly installed on the outside of the gas guide pipe.

[0008] As a further preferred of the technical solution, the self-locking structure comprises a locking cavity, the locking cavity is formed in the inside of the oxygen generator body, a sliding plate is slidably connected between inner walls of the locking cavity, a pressure spring is fixedly connected between one side of the sliding plate and the inner walls of the locking cavity, a clamping block is fixedly connected to the other side of the sliding plate, a clamping groove is formed in one side of the filter box, an inclined surface end of the clamping block extends into the inside of the clamping groove, a lever is fixedly connected to one side of the sliding plate, and one end of the lever extends to the outside of the oxygen generator body.

[0009] As a further preferred of the technical solution, a connecting groove is formed in the inside of the sliding cavity, and one end of the telescopic pipe extends into the inside of the connecting groove.

[0010] As a further preferred of the technical solution, a maintenance door is rotatably connected to one side of the oxygen generator body, a slot is formed in the side of the oxygen separator close to the maintenance door, and a polyamide polymer film is arranged between inner walls of the slot.

[0011] As a further preferred of the technical solution, heat dissipation through holes are formed in both sides of the oxygen generator body, and the heat dissipation through holes are communicated with the cavity.

[0012] The utility model provides a multi-stage filtering filter core assembly for medical oxygen generator, has the following beneficial effect:

[0013] (1) The utility model discloses an air inlet assembly is introduced outside air into the oxygen generator body, and air enters multistage filter core assembly through the air inlet net, and in the assembly, air passes through primary filter core, HEPA filter core, activated carbon filter core and drying agent filter core in proper order, completes multistage filtration work, and the filtered oxygen enters the oxygen separator, and separates oxygen and nitrogen under the action of polyamide polymer membrane, and the oxygen separated finally is exported through the air outlet connecting port, through multistage filter core assembly, the utility model discloses can effectively adapt to various working environments, and the drying agent filter core set up internally can effectively guarantee the dryness of oxygen, and staff is convenient to use and collect oxygen.

[0014] (2) The utility model discloses through the locking of filter box to self -locking component, and it is convenient for staff to remove multistage filter core assembly and replace filter core in time, and this design saves maintenance time and improves use efficiency.

[0015] (3) The utility model discloses through setting up the access door, make the replacement of polyamide polymer membrane become convenient, thereby improved the use efficiency of oxygen separator. DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model discloses;

[0017] Figure 2 It is the half cut structure schematic diagram of the utility model discloses;

[0018] Figure 3 It is the back view structure schematic diagram of the utility model discloses;

[0019] Figure 4 It is the slide cavity internal structure schematic diagram of the utility model discloses;

[0020] Figure 5 It is the filter box section structure schematic diagram of the utility model discloses;

[0021] Figure 6 It is the structure schematic diagram of the utility model discloses Figure 3 Enlarged drawing structure schematic diagram of A place in;

[0022] Figure 7 It is the structure schematic diagram of the utility model discloses Figure 5 Enlarged drawing structure schematic diagram of B place in;

[0023] In the figure: 1, the oxygen generator body; 2, the air inlet net; 3, the cavity; 4, the blocking frame; 5, the air guide bucket; 6, the air guide pipe; 7, the air pressure pump; 8, the oxygen separator; 9, the slot; 10, the polyamide polymer film; 11, the access door; 12, the sliding cavity; 13, the filter box; 14, the cross plate; 15, the primary filter element; 16, the HEPA filter element; 17, the activated carbon filter element; 18, the desiccant filter element; 19, the limiting groove; 20, the telescopic pipe; 21, the sealing ring; 22, the reset spring; 23, the clamping groove; 24, the clamping block; 25, the locking cavity; 26, the sliding plate; 27, the pressure spring; 28, the lever; 29, the air outlet connecting port; 30, the heat dissipation through hole; 31, the moving wheel; 32, the connecting groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0025] The utility model provides technical schemes: as Figures 1-7 The utility model discloses a multistage filter element assembly for medical oxygen generator, which is used for the oxygen generator body 1, one side of the oxygen generator body 1 is fixedly connected with the air inlet net 2, the inside of the oxygen generator body 1 is fixedly connected with the blocking frame 4, the blocking frame 4 divides the inside of the oxygen generator body 1 into the cavity 3 and the sliding cavity 12, the inside of the cavity 3 is provided with an air inlet assembly, the inside of the sliding cavity 12 is slidably connected with the multistage filter element assembly, the input end of the air inlet assembly is fixedly connected with the air inlet net 2, the output end of the air inlet assembly is fixedly connected with the multistage filter element assembly, the inside of the oxygen generator body 1 and above the sliding cavity 12 is fixedly installed with the oxygen separator 8, the output end of the multistage filter element assembly is fixedly connected with the oxygen separator 8, the output end of the oxygen separator 8 extends to the top of the oxygen generator body 1 and is fixedly connected with the air outlet connecting port 29, the inside of the oxygen generator body 1 is provided with a self-locking structure, the self-locking assembly is used for locking the multistage filter element assembly, the bottom of the oxygen generator body 1 is provided with the moving wheel 31, one side of the oxygen generator body 1 is rotatably connected with the access door 11, one side of the oxygen separator 8 close to the access door 11 is provided with the slot 9, the polyamide polymer film 10 is arranged between the inner walls of the slot 9, both sides of the oxygen generator body 1 are provided with the heat dissipation through hole 30, and the heat dissipation through hole 30 is communicated with the cavity 3.

[0026] In the use process of the oxygen generator body 1, the external air is introduced into the oxygen generator body 1 through the air inlet assembly, the air enters the multistage filter element assembly through the air inlet net 2, and after the multistage filtration of the multistage filter element assembly, the air enters the oxygen separator 8, the separation of oxygen and nitrogen is completed under the action of the polyamide polymer film 10, and finally the separated oxygen is led out through the air outlet connecting port 29, so that the manufacture of oxygen is facilitated through the multistage filter element assembly, and the use of the oxygen generator body 1 is facilitated.

[0027] As Figures 1-7 shown in the figure, the multi-stage filter cartridge assembly includes a filter box 13, the inner wall of which is fixedly connected with a horizontal plate 14, the lower part of which and inside the filter box 13 is fixedly installed with a primary filter cartridge 15, a HEPA filter cartridge 16, an activated carbon filter cartridge 17 and a desiccant filter cartridge 18, the top of the horizontal plate 14 is provided with a limiting groove 19, the inner wall of which is slidably connected with an extension tube 20, the input end of which extends to the inside of the desiccant filter cartridge 18, the outer side of the extension tube 20 is fixedly connected with a sealing ring 21, the outer side of the extension tube 20 and between the sealing ring 21 and the inner wall of the limiting groove 19 is fixedly connected with a return spring 22, the inner side of the sliding cavity 12 is provided with a connecting groove 32, one end of the extension tube 20 extends to the inside of the connecting groove 32.

[0028] The imported air passes through the primary filter cartridge 15, the HEPA filter cartridge 16, the activated carbon filter cartridge 17 and the desiccant filter cartridge 18 in turn to complete the multi-stage filtering work, wherein the primary filter cartridge 15 is used to remove larger particles of impurities in the air, the HEPA filter cartridge 16 can filter out tiny particulate matter, including pollen, bacteria and viruses, the activated carbon filter cartridge 17 is mainly used to remove odors and harmful gases in the air, and can adsorb part of volatile organic compounds (VOCs), and the desiccant filter cartridge 18 is used to remove moisture in the air to prevent moisture from affecting the internal elements.

[0029] The design of the extension tube 20 is mainly used to facilitate the installation and removal of the filter box 13, and by extending one end of the extension tube 20 to the inside of the connecting groove 32, the sealing between the pipes can be enhanced by cooperating with the sealing ring 21, thereby improving the production quality of the oxygen generator body 1.

[0030] As Figures 1-7 shown in the figure, the air inlet assembly includes a gas guide 5, which is fixedly connected to the inner side of the cavity 3, the input end of which is communicated with the air inlet net 2, and the gas guide 5 and the multi-stage filter cartridge assembly are fixedly connected with a gas guide pipe 6, the outer side of which is fixedly installed with a gas pressure pump 7.

[0031] The inside of the gas guide pipe 6 is pressurized by the gas pressure pump 7, and the outside air is introduced into the oxygen generator body 1 by compressed air, thereby providing a gas source for the oxygen generator body 1.

[0032] As Figures 1-7As shown, the self-locking structure comprises a locking cavity 25 which is arranged in the inside of the oxygen generator body 1, a sliding plate 26 is slidably connected between the inner walls of the locking cavity 25, a pressure spring 27 is fixedly connected between one side of the sliding plate 26 and the inner wall of the locking cavity 25, a clamping block 24 is fixedly connected to the other side of the sliding plate 26, a clamping groove 23 is arranged on one side of the filter box 13, the inclined end of the clamping block 24 extends into the clamping groove 23, a push rod 28 is fixedly connected to one side of the sliding plate 26, and one end of the push rod 28 extends to the outside of the oxygen generator body 1.

[0033] When the filter box 13 is removed for maintenance, the push rod 28 is pushed to drive the sliding plate 26 to move between the inner walls of the locking cavity 25, thereby driving the clamping block 24 to disengage from the inside of the clamping groove 23, and further releasing the locking of the filter box 13, so that the staff can easily pull out the filter box 13 and replace the filter core.

[0034] The utility model provides a multi-stage filter core assembly for medical oxygen generator, and the specific working principle is as follows: in the use process of oxygen generator body 1, the inside of gas guide pipe 6 is pressurized by using air pressure pump 7, and the outside air is introduced into oxygen generator body 1 by compressed air, air passes through air inlet net 2, and enters primary filter core 15 in turn through gas guide hopper 5 and gas guide pipe 6, then completes multi-stage filtration work in turn through HEPA filter core 16, activated carbon filter core 17 and desiccant filter core 18, and the oxygen after multi-stage filtration enters oxygen separator 8 along telescopic pipe 20, and the separation of oxygen and nitrogen is completed under the action of polyamide polymer membrane 10, and the oxygen after final separation is guided out through air outlet connecting port 29.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filter cartridge assembly for a medical oxygen generator, for use in an oxygen generator body (1), characterized in that: The side of the oxygen generator body (1) is fixedly connected with an air inlet net (2), the inside of the oxygen generator body (1) is fixedly connected with a blocking frame (4), the blocking frame (4) separates the inside of the oxygen generator body (1) into a cavity (3) and a sliding cavity (12), the inside of the cavity (3) is provided with an air inlet assembly, the inside of the sliding cavity (12) is slidably connected with a multi-stage filter cartridge assembly, the input end of the air inlet assembly is fixedly connected with the air inlet net (2), the output end of the air inlet assembly is fixedly connected with the multi-stage filter cartridge assembly, the inside of the oxygen generator body (1) and above the sliding cavity (12) is fixedly installed with an oxygen separator (8), the output end of the multi-stage filter cartridge assembly is fixedly connected with the oxygen separator (8), the output end of the oxygen separator (8) extends to the top of the oxygen generator body (1) and is fixedly connected with an air outlet connector (29), the inside of the oxygen generator body (1) is provided with a self-locking structure, the self-locking structure is used for locking the multi-stage filter cartridge assembly, the bottom of the oxygen generator body (1) is provided with a movable wheel (31).

2. The multi-stage filter cartridge assembly for medical oxygen generator according to claim 1, characterized in that: The multi-stage filter cartridge assembly comprises a filter box (13), the inner walls of the filter box (13) are fixedly connected with a transverse plate (14), the bottom of the transverse plate (14) and inside the filter box (13) are fixedly installed with a primary filter cartridge (15), a HEPA filter cartridge (16), an activated carbon filter cartridge (17) and a desiccant filter cartridge (18), the top of the transverse plate (14) is provided with a limiting groove (19), the inner walls of the limiting groove (19) are slidably connected with a telescopic pipe (20), the input end of the telescopic pipe (20) extends to the inside of the desiccant filter cartridge (18), the outer side of the telescopic pipe (20) is fixedly connected with a sealing ring (21), the outer side of the telescopic pipe (20) and between the sealing ring (21) and the inner walls of the limiting groove (19) is fixedly connected with a return spring (22).

3. The multi-stage filter cartridge assembly for medical oxygen generator according to claim 1, characterized in that: The air inlet assembly comprises an air guide hopper (5), the air guide hopper (5) is fixedly connected to the inner side of the cavity (3), the input end of the air guide hopper (5) is communicated with the air inlet net (2), the air guide hopper (5) and the multi-stage filter cartridge assembly are fixedly connected with an air guide pipe (6), the outer side of the air guide pipe (6) is fixedly installed with an air pressure pump (7).

4. The multi-stage filter cartridge assembly for medical oxygen generator according to claim 2, characterized in that: The self-locking structure comprises a locking cavity (25), the locking cavity (25) is formed in the inside of the oxygen generator body (1), the inner walls of the locking cavity (25) are slidably connected with a sliding plate (26), one side of the sliding plate (26) and the inner walls of the locking cavity (25) are fixedly connected with a pressure spring (27), the other side of the sliding plate (26) is fixedly connected with a clamping block (24), one side of the filter box (13) is provided with a clamping groove (23), the inclined end of the clamping block (24) extends to the inside of the clamping groove (23), one side of the sliding plate (26) is fixedly connected with a lever (28), one end of the lever (28) extends to the outside of the oxygen generator body (1).

5. The multi-stage filter cartridge assembly for medical oxygen generator according to claim 2, characterized in that: The inner side of the sliding cavity (12) is provided with a connecting groove (32), and one end of the telescopic pipe (20) extends to the inside of the connecting groove (32).

6. The multi-stage filter cartridge assembly for medical oxygen generator according to claim 1, characterized in that: The oxygen generator body (1) is rotationally connected with an access door (11) on one side, the oxygen separator (8) is provided with a slot (9) on the side close to the access door (11), and a polyamide polymer film (10) is arranged between the inner walls of the slot (9).

7. The multi-stage filter cartridge assembly for medical oxygen generator according to claim 1, characterized in that: The oxygen generator body (1) is provided with heat dissipation through holes (30) on both sides, and the heat dissipation through holes (30) are communicated with the cavity (3).

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