Medical oxygen generator convenient for replacing air inlet filter element

Abstract

The medical oxygen generator comprises a main machine of the oxygen generator, a rectangular concave table is formed on the lower portion of the outer wall of one side of the main machine, an air inlet hole is formed in the bottom face of the upper portion of the concave table, a round limiting sinking table is formed at an inlet of the air inlet hole, and the cylindrical air filter element is inserted into the limiting sinking table. A vertical strip-shaped pressing block is inserted into the concave table of the main machine, the upper portion of the pressing block abuts against the air filter element in a pressing mode, a plurality of air inlet grooves right opposite to the air filter element are formed in the upper portion of the pressing block, and spherical positioning concave holes are formed in the positions, on the two sides of the air inlet grooves, of the side wall of the pressing block respectively. According to the oxygen generator, the limiting counter bores are matched with the pressing and holding pieces to position the air filter element, so that the air filter element is convenient and rapid to replace; and the air filter element can be stored on the pressing piece, so that the air filter element is more convenient to replace.

Description

Technical Field:

[0001] The utility model relates to the technical field of oxygen generators, and more specifically, to a medical oxygen generator that is convenient for replacing an intake air filter element. Background Art:

[0002] An oxygen generator is a kind of machine for producing oxygen, and its principle is to utilize air separation technology. First, air is compressed at high density and then, due to the different condensation points of the components in the air, it is subjected to gas-liquid separation at a certain temperature, and then rectification is carried out to separate it into oxygen and nitrogen, and the oxygen can be used for people to inhale. Currently, an intake port is provided on the oxygen generator for the entry of air. In order to prevent dust and impurities in the air from entering the oxygen generator and causing an impact, an air filter element is provided at the intake port. The air filter element is generally cylindrical and is entirely inserted into a cap. When replacing, the cap is pulled out from the intake port, and then the air filter element is pulled out from the cap for replacement. In order to prevent the air filter element from moving, the fit between the air filter element and the cap is relatively tight, and it is rather inconvenient to replace the air filter element in the cap. Therefore, a structure that is convenient for replacing the air filter element needs to be designed. Summary of the Utility Model:

[0003] The purpose of the utility model is to address the deficiencies of the existing technology, and provide a medical oxygen generator that is convenient for replacing an intake air filter element. The oxygen generator uses a limit counterbore to cooperate with a pressing member to position the air filter element, and thus it is more convenient and rapid to replace the air filter element.

[0004] A medical oxygen generator that is convenient for replacing an intake air filter element includes the main body of the oxygen generator. A rectangular concave platform is formed on the lower part of the outer wall on one side of the main body. An intake hole is formed on the bottom surface of the upper part of the concave platform. A circular limit sink is formed at the entrance of the intake hole. A cylindrical air filter element is inserted into the limit sink. A vertically strip-shaped pressing block is inserted into the concave platform of the main body. The upper part of the pressing block presses against the air filter element and several intake slots that are opposite to the air filter element are formed. Spherical positioning concave holes are respectively formed on the side walls of the pressing block on both sides of the intake slots.

[0005] A hinge shaft is inserted into the lower end of the pressing block. Both ends of the hinge shaft extend out of the pressing block and are respectively inserted into lower ear seats. The lower ear seats are inserted and fixed in the concave platform of the main body. Upper ear seats are inserted and fixed in the concave platform on both sides of the limit sink. The side of the upper ear seat facing away from the pressing block abuts against the side wall of the concave platform and a jack is formed. A positioning ball, a spring, and a cushion block are inserted into the jack. The cushion block is clamped between the positioning ball and the spring. One end of the spring away from the cushion block presses against the side wall of the concave platform. One side of the positioning ball extends out of the upper ear seat and is inserted into the positioning concave hole of the pressing block.

[0006] Preferably, lower step holes are formed on the lower ear seats, upper step holes are formed on the upper ear seats, screws are respectively inserted into the lower step holes and the upper step holes, and the ends of the screws are screwed and fixed on the main body.

[0007] A positioning hole is formed on the side end surface of the lower ear seat close to the pressing block, and the hinge shaft is inserted into the positioning hole of the pressing block.

[0008] Preferably, handle grooves are respectively formed on the opposite side walls of the upper part of the main body.

[0009] Preferably, the side end surface of the pressing block close to the bottom surface of the concave platform abuts against the bottom surface of the concave platform, and an arc-shaped avoidance surface is formed on the lower side edge of the pressing block. The center of the arc of the avoidance surface is located on the central axis of the hinge shaft.

[0010] A strip-shaped groove is formed on the side end surface of the pressing block in contact with the bottom surface of the concave platform. A limiting boss is formed on the bottom surface of the upper part of the groove. The air filter element of the limiting sunken platform extends out of the bottom surface of the concave platform and is inserted into the groove of the pressing block and abuts against the limiting boss. The intake grooves are distributed on the limiting boss.

[0011] Preferably, the intake grooves are evenly distributed in a ring around the central axis of the intake hole.

[0012] Preferably, a plurality of positioning sunken holes are formed on the bottom surface of the groove below the limiting boss, and the air filter element is inserted into the positioning sunken holes.

[0013] The beneficial effects of the present utility model are as follows:

[0014] On this oxygen generator, the limiting sunken holes are used in cooperation with the pressing member to position the air filter element, so that it is more convenient and quick to replace the air filter element; moreover, the air filter element can be stored on the pressing member, making the replacement more convenient. Description of the drawings:

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a three-dimensional schematic diagram of the pressing block in the present utility model being turned over and opened;

[0017] Figure 3 is a front view schematic diagram of the pressing block in the present utility model being turned over and opened;

[0018] Figure 4 is Figure 3 a partial enlarged schematic diagram at A in

[0019] In the figure: 1. Main body; 11. Concave platform; 12. Intake hole; 13. Limiting sunken platform; 14. Handle groove; 2. Pressing block; 21. Groove; 22. Limiting boss; 23. Positioning sunken hole; 24. Intake groove; 25. Positioning concave hole; 3. Hinge shaft; 4. Lower ear seat; 41. Lower stepped hole; 42. Positioning hole; 5. Upper ear seat; 51. Upper stepped hole; 52. Insertion hole; 6. Positioning ball; 7. Spring; 8. Spacer block. Specific implementation manner:

[0020] Example: See Figures 1 to 4 As shown, a medical oxygen generator that facilitates the replacement of an intake air filter includes the main body 1 of the oxygen generator. A rectangular concave platform 11 is formed on the lower part of the outer wall on one side of the main body 1. An intake hole 12 is formed on the bottom surface of the upper part of the concave platform 11. A circular limiting sunk platform 13 is formed at the entrance of the intake hole 12. A cylindrical air filter is inserted into the limiting sunk platform 13. A vertically strip-shaped pressing block 2 is inserted into the concave platform 11 of the main body 1. The upper part of the pressing block 2 presses against the air filter and several intake slots 24 facing the air filter are formed. Spherical positioning concave holes 25 are respectively formed on the side walls of the pressing block 2 on both sides of the intake slot 24.

[0021] A hinge shaft 3 is inserted into the lower end of the pressing block 2. Both ends of the hinge shaft 3 extend out of the pressing block 2 and are respectively inserted into the lower ear seats 4. The lower ear seats 4 are inserted and fixed in the concave platform 11 of the main body 1. Upper ear seats 5 are inserted and fixed in the concave platform 11 on both sides of the limiting sunk platform 13. One side of the upper ear seat 5 away from the pressing block 2 abuts against the side wall of the concave platform 11 and a jack 52 is formed. A positioning ball 6, a spring 7 and a cushion block 8 are inserted into the jack 52. The cushion block 8 is clamped between the positioning ball 6 and the spring 7. One end of the spring 7 away from the cushion block 8 presses against the side wall of the concave platform 11. One side of the positioning ball 6 extends out of the upper ear seat 5 and is inserted into the positioning concave hole 25 of the pressing block 2.

[0022] Lower step holes 41 are formed on the lower ear seats 4, and upper step holes 51 are formed on the upper ear seats 5. Screws are respectively inserted into the lower step holes 41 and the upper step holes 51. The ends of the screws are screwed and fixed on the main body 1. By using threaded connection with screws, it is convenient for installation and disassembly.

[0023] A positioning hole 42 is formed on the side end surface of the lower ear seat 4 close to the pressing block 2. The hinge shaft 3 is inserted into the positioning hole 42 of the pressing block 2.

[0024] Pulling grooves 14 are respectively formed on the opposite side walls of the upper part of the main body 1. It is convenient to carry the oxygen generator through the pulling grooves 14.

[0025] The side end surface of the pressing block 2 close to the bottom surface of the concave platform 11 abuts against the bottom surface of the concave platform 11. An arc-shaped avoidance surface is formed on the lower side of the pressing block 2. The center of the arc of the avoidance surface is located on the central axis of the hinge shaft 3. Furthermore, there will be no jamming problem when the pressing block 2 rotates.

[0026] A strip-shaped groove 21 is formed on the side end surface of the pressing block 2 that contacts the bottom surface of the concave table 11. A limiting boss 22 is formed on the bottom surface of the upper part of the groove 21. The air filter element of the limiting sunk table 13 extends out of the bottom surface of the concave table 11 and is inserted into the groove 21 of the pressing block 2 and abuts against the limiting boss 22. The intake air grooves 24 are distributed on the limiting boss 22. The length of the air filter element is greater than the depth of the limiting sunk table 13, so a part of it is exposed out of the limiting sunk table 13, and it is convenient to remove the air filter element through the exposed end for replacement.

[0027] The intake air grooves 24 are evenly distributed in a ring around the central axis of the intake hole 12.

[0028] A number of positioning sunk holes 23 are formed on the bottom surface of the groove 21 below the limiting boss 22, and the air filter element is inserted into the positioning sunk holes 23. The air filter element is brand new and spare, and can be arranged on the oxygen generator for standby replacement, making it more convenient to replace the air filter element.

[0029] Working principle: This technical solution is a medical oxygen generator for conveniently replacing the intake air filter element. The schematic diagram of the normal use state of the oxygen generator is as Figure 1 described. The air filter element installed in the limiting sunk table 13 is constrained by the pressing block 2, and air can enter from the intake air grooves 24 and enter the intake hole 12 after being filtered by the air filter element.

[0030] When replacement is needed, the pressing block 2 can be pulled to cause it to flip. After flipping, as Figure 2 shown, the air filter element is taken out of the limiting sunk table 13, and then the spare air filter element is taken from the positioning sunk holes 23 of the pressing block 2 and inserted into the limiting sunk table 13, and then the pressing block 2 is flipped and closed to complete the replacement.

[0031] The described embodiments are used to illustrate the present invention by way of example, rather than to limit the present invention. Any person skilled in the art can modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of the rights protection of the present invention should be as listed in the claims of the present invention.

Claims

1. A medical oxygen generator that facilitates the replacement of an intake air filter, comprising a main body (1) of the oxygen generator. A rectangular concave platform (11) is formed on the lower part of the outer wall on one side of the main body (1). An intake air hole (12) is formed on the bottom surface of the upper part of the concave platform (11). A circular limiting sunk platform (13) is formed at the entrance of the intake air hole (12). A cylindrical air filter element is inserted into the limiting sunk platform (13). It is characterized in that: A vertical strip-shaped pressing block (2) is inserted into the concave platform (11) of the main machine (1). The upper part of the pressing block (2) presses against the air filter element and is formed with a number of air intake grooves (24) facing the air filter element. Spherical positioning concave holes (25) are respectively formed on the side walls of the pressing block (2) on both sides of the air intake groove (24). The lower end of the pressing block (2) is inserted with a hinge shaft (3). Both ends of the hinge shaft (3) extend out of the pressing block (2) and are respectively inserted into the lower ear seats (4). The lower ear seats (4) are inserted and fixed in the concave platform (11) of the main machine (1). Upper ear seats (5) are inserted and fixed in the concave platforms (11) on both sides of the limiting sunk platform (13). One side of the upper ear seat (5) facing away from the pressing block (2) abuts against the side wall of the concave platform (11) and is formed with a jack (52). A positioning ball (6), a spring (7) and a cushion block (8) are inserted into the jack (52). The cushion block (8) is clamped between the positioning ball (6) and the spring (7). One end of the spring (7) away from the cushion block (8) presses against the side wall of the concave platform (11). One side of the positioning ball (6) extends out of the upper ear seat (5) and is inserted into the positioning concave hole (25) of the pressing block (2).

2. The medical oxygen generator for conveniently replacing an intake air filter according to claim 1, wherein: The lower ear seat (4) is formed with a lower stepped hole (41), and the upper ear seat (5) is formed with an upper stepped hole (51). Screws are respectively inserted into the lower stepped hole (41) and the upper stepped hole (51), and the ends of the screws are screwed and fixed on the main machine (1). A positioning hole (42) is formed on the side end face of the lower ear seat (4) close to the pressing block (2), and the hinge shaft (3) is inserted into the positioning hole (42) of the pressing block (2).

3. The medical oxygen generator for conveniently replacing an intake air filter according to claim 1, wherein: Pulling grooves (14) are respectively formed on the opposite side walls of the upper part of the main machine (1).

4. A medical oxygen generator for conveniently replacing an intake air filter according to claim 1, wherein: The side end face of the pressing block (2) close to the bottom surface of the concave platform (11) abuts against the bottom surface of the concave platform (11). The lower side of the pressing block (2) is formed with an arc-shaped avoiding surface, and the center of the arc of the avoiding surface is located on the central axis of the hinge shaft (3). A strip-shaped groove (21) is formed on the side end face of the pressing block (2) in contact with the bottom surface of the concave platform (11). A limiting boss (22) is formed on the bottom surface of the upper part of the groove (21). The air filter element of the limiting sunk platform (13) extends out of the bottom surface of the concave platform (11) and is inserted into the groove (21) of the pressing block (2) and abuts against the limiting boss (22). The air intake grooves (24) are distributed on the limiting boss (22).

5. A medical oxygen generator for conveniently replacing an intake air filter according to claim 4, characterized in that: The air intake grooves (24) are evenly distributed in a ring around the central axis of the air intake hole (12).

6. The medical oxygen generator for conveniently replacing an intake air filter according to claim 4, wherein: A number of positioning sunk holes (23) are formed on the bottom surface of the groove (21) below the limiting boss (22), and the air filter element is inserted into the positioning sunk holes (23).

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