A check valve and humidification bottle

Abstract

The utility model relates to medical instrument technical field, especially a check valve and humidification bottle, including the connecting pipe, be equipped with first air passage in the connecting pipe, the air cock, the air cock and connecting pipe detachable connection, be equipped with second air passage in the air cock, second air passage and first air passage correspond to set up, the rudder, the rudder first end slide in second air passage, the rudder second end and the export of first air passage correspond to set up, when the gas is in order, the rudder opens the export of first air passage to make first air passage and second air passage intercommunication, when the gas is in reverse, the rudder closes the export of first air passage to make first air passage and second air passage not intercommunication. Set up like this, its simple structure, cost is not high, and the assembly and disassembly are very convenient, and can play good prevent gas reverse flow effect.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a check valve and a humidification bottle, and more particularly to a fireproof check valve for use in humidification bottles for oxygen generators and hydrogen generators. Background Technology

[0002] Both oxygen concentrators and hydrogen generators belong to rehabilitation equipment and ward nursing consumables, mainly used in medical central oxygen and hydrogen supply systems. Both types of machines are generally equipped with humidification bottles, which allow medical staff to directly observe the dynamics of oxygen or hydrogen supply and the adjustment of flow rates. The humidification bottle has an inlet and an outlet. The inlet is used to connect to the gas source, and the outlet is used to output the humidified gas. The outlet typically has a check valve. Traditionally, the check valve is connected to the outlet of the humidification bottle via a flame-retardant plastic connecting tube. During assembly, clamps or cable ties are used to lock both ends of the flame-retardant connecting tube to the check valve and the outlet of the humidification bottle, making the assembly process rather cumbersome.

[0003] The utility model patent with announcement number CN215841075U discloses an oxygen humidification bottle. The prior art has an outlet connector and a valve cavity connected to the outlet connector on the bottle cap of the humidification bottle, and a check valve assembly is provided in the valve cavity. The check valve assembly has a complex structure and is assembled on the inner wall of the bottle cap. When assembling and disassembling, the bottle cap needs to be removed from the humidification bottle before assembly, which is relatively cumbersome.

[0004] Therefore, there is still room for improvement and development in existing technologies. Utility Model Content

[0005] To address the problems in the prior art, this utility model proposes a check valve and a humidification bottle. The check valve has a simple structure and is very easy to assemble and disassemble.

[0006] To achieve the above objectives, the technical solution applied in this utility model is as follows:

[0007] A check valve includes a connecting pipe with a first air passage inside; an air nozzle detachably connected to the connecting pipe, with a second air passage inside, the second air passage corresponding to the first air passage; and an air rudder, the first end of which is slidably disposed within the second air passage, and the second end of which is correspondingly disposed with respect to the outlet of the first air passage. When the gas flows in the forward direction, the air rudder opens the outlet of the first air passage to connect the first and second air passages; when the gas flows in the reverse direction, the air rudder closes the outlet of the first air passage to prevent the first and second air passages from connecting.

[0008] According to the above scheme, the air rudder includes a check head, a rudder stock, and a propeller. The propeller is located at the first end of the rudder stock and is correspondingly arranged with the outlet of the second air passage, forming an air outlet notch. A third air outlet gap is formed between the outer wall of the rudder stock and the inner wall of the second air passage. The check head is located at the second end of the rudder stock and is correspondingly arranged with the outlet of the first air passage, forming a first air outlet gap and a second air outlet gap.

[0009] According to the above scheme, the first air outlet gap is located between the end of the check head and the outlet of the first air passage. The outlet of the first air passage is provided with a first limiting groove, and the check head slides within the first limiting groove. The second air outlet gap is located between the outer wall of the check head and the inner wall of the first limiting groove.

[0010] According to the above scheme, a suspension thrust device is provided between the end of the check head and the outlet of the first air passage.

[0011] According to the above scheme, the suspension thrust device includes a spring, a second limiting groove is provided on the outlet of the first air passage, the second limiting groove is located between the outlet of the first air passage and the first limiting groove, a third limiting groove is provided on the end of the check head, and the two ends of the spring are respectively located in the second limiting groove and the third limiting groove.

[0012] According to the above scheme, a first limiting step is provided between the first limiting groove and the second limiting groove for limiting the movement of the anti-reverse head end, and a second limiting step is provided between the second limiting groove and the outlet of the first air passage for limiting the movement of the spring.

[0013] According to the above scheme, the suspension thrust device includes a first magnetic ring and a second magnetic ring. A second limiting groove is provided on the outlet of the first air passage. The second limiting groove is located between the outlet of the first air passage and the first limiting groove. A third limiting groove is provided on the end of the check head. The first magnetic ring is located in the second limiting groove, and the second magnetic ring is located in the third limiting groove. The first magnetic ring and the second magnetic ring are arranged with the same poles and repel each other.

[0014] According to the above scheme, the inner wall of the outlet of the second air passage is provided with a third limiting step that cooperates with the propeller for limiting.

[0015] According to the above scheme, the connecting pipe is provided with a first threaded part, a second threaded part and an extension part, the second threaded part and the extension part are respectively located at both ends of the first threaded part, the air nozzle is provided with a third threaded part and an air pipe locking part, and the third threaded part and the second threaded part are threadedly connected.

[0016] The present invention provides a humidification bottle, which includes a bottle body, a cap, and the aforementioned check valve. The cap and the bottle body are detachably connected. The cap is provided with an air inlet, an air outlet, and a pressure relief port. The air outlet is provided with a fourth threaded part, which is threadedly connected to the first threaded part of the connecting pipe.

[0017] The beneficial effects of this utility model are:

[0018] This invention features a simple structure, low cost, and easy assembly and disassembly. When the gas flows in the forward direction, the rudder opens the outlet of the first air passage to connect the first and second air passages. When the gas flows in the reverse direction, the rudder closes the outlet of the first air passage to prevent the first and second air passages from connecting, thus effectively preventing gas backflow. Attached Figure Description

[0019] Figure 1 This is an exploded view of the check valve structure in Example 1;

[0020] Figure 2 yes Figure 1 Sectional view;

[0021] Figure 3 This is a schematic diagram of the check valve structure assembly in Example 1;

[0022] Figure 4 This is a cross-sectional view of the non-return valve structure assembly and a state diagram of the gas flow in the forward direction in Example 1;

[0023] Figure 5 This is a cross-sectional view of the check valve structure assembly and a state diagram during gas backflow in Example 1;

[0024] Figure 6 This is an exploded view of the check valve structure in Example 2;

[0025] Figure 7 This is a cross-sectional view of the check valve structure assembly in Embodiment 2.

[0026] Figure 8 This is a front view of the structure of the humidification bottle of this utility model.

[0027] In the picture:

[0028] 1. Connecting pipe; 11. First threaded part; 12. Second threaded part; 13. Extension part; 14. First air passage; 15. First limiting groove; 16. Second limiting groove; 17. First limiting step; 18. Second limiting step; 2. Air nozzle; 21. Second air passage; 22. Third threaded part; 23. Third limiting step; 24. Air pipe locking part; 3. Air rudder; 31. Check valve; 32. Rudder stock; 33. Air propeller; 34. Third limiting groove; 35. First air outlet gap; 36. Second air outlet gap; 37. Third air outlet gap; 38. Air outlet notch; 4. Spring; 41. First magnetic ring; 42. Second magnetic ring; 5. Bottle body; 6. Cap body; 61. Air inlet; 62. Air outlet; 63. Pressure relief port. Detailed Implementation

[0029] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0030] Example 1:

[0031] like Figures 1 to 5 As shown, the check valve of this utility model includes a connecting pipe 1, which has a first air passage 14 inside; an air nozzle 2, which is detachably connected to the connecting pipe 1, and has a second air passage 21 inside, which is correspondingly arranged with the first air passage 14; and an air rudder 3, the first end of which is slidably disposed in the second air passage 21, and the second end of which is correspondingly arranged with the outlet of the first air passage 14. When the gas flows in the forward direction, the gas pressure pushes the air rudder 3 to open the outlet of the first air passage 14, so that the first air passage 14 and the second air passage 21 are connected; when the gas flows backward, the gas pressure pushes the air rudder 3 to close the outlet of the first air passage 14, so that the first air passage 14 and the second air passage 21 are not connected. This design is simple in structure, low in cost, and very convenient to install and disassemble; moreover, it can effectively prevent gas backflow.

[0032] Furthermore, the rudder 3 includes a check head 31, a rudder stock 32, and a propeller 33. The propeller 33 is located at the first end of the rudder stock 32. The propeller 33 is correspondingly arranged with the outlet of the second air passage 21 and forms an air outlet notch 38. A third air outlet gap 37 is formed between the outer wall of the rudder stock 32 and the inner wall of the second air passage 21. The check head 31 is located at the second end of the rudder stock 32. The check head 31 is correspondingly arranged with the outlet of the first air passage 14 and forms a first air outlet gap 35 and a second air outlet gap 36. With this configuration, when the gas flows downstream, it flows out through the first air passage 14, the first outlet gap 35, the second outlet gap 36, the third outlet gap 37, and the outlet notch 38. When the gas flows upstream, the gas pressure drives the propeller 33 in the opposite direction, which in turn drives the rudder 32 and the anti-reverse head 31 to close the outlet of the first air passage 14. Specifically, it closes the first outlet gap 35, so that the gas cannot flow upstream into the first air passage 14 after passing through the second air passage 21.

[0033] Furthermore, the first air outlet gap 35 is located between the end of the check head 31 and the outlet of the first air passage 14. The outlet of the first air passage 14 is provided with a first limiting groove 15. The check head 31 slides within the first limiting groove 15. The second air outlet gap 36 is located between the outer wall of the check head 31 and the inner wall of the first limiting groove 15.

[0034] In practical applications, the anti-reverse head 31 is preferably a conical structure, a frustum structure, or a cylindrical structure, and the vertical cross-sectional volume of the anti-reverse head 31 is larger than the vertical cross-sectional volume of the rudder 32. When the gas flows in reverse, the propeller 33 is the first force-bearing surface and the anti-reverse head 31 is the second force-bearing surface. Under the pressure of the gas, it moves towards the outlet direction of the first air passage 14 to close the outlet of the first air passage 14. When the gas flows in the forward direction, the anti-reverse head 31 can move away from the outlet direction of the first air passage 14 under the pressure of the gas.

[0035] Furthermore, a levitation thrust device is provided between the end of the check valve 31 and the outlet of the first air passage 14. With this configuration, the check valve 31 can be suspended relative to the outlet of the first air passage 14 in its initial state through the levitation thrust device. Specifically, under normal conditions, the outlet of the first air passage 14 is normally open under the action of the levitation thrust device.

[0036] Furthermore, the suspension thrust device includes a spring 4, a second limiting groove 16 on the outlet of the first air passage 14, the second limiting groove 16 being located between the outlet of the first air passage 14 and the first limiting groove 15, and a third limiting groove 34 on the end of the check head 31. The two ends of the spring 4 are respectively located in the second limiting groove 16 and the third limiting groove 34. With this configuration, under normal conditions, the outlet of the first air passage 14 is normally open under the elastic force of the spring 4; when the gas flows in reverse, the gas pressure pushes the check head 31 in the opposite direction toward the outlet of the first air passage 14, closing the outlet of the first air passage 14. At this time, the spring 4 is in a compressed state. When the gas stops flowing, the spring 4 returns to its original position, causing the check head 31 to be suspended relative to the outlet of the first air passage 14 again.

[0037] The use of spring 4 allows gas to pass through smoothly.

[0038] Furthermore, a first limiting step 17 is provided between the first limiting groove 15 and the second limiting groove 16 for limiting the position in conjunction with the end of the check head 31, and a second limiting step 18 is provided between the second limiting groove 16 and the outlet of the first air passage 14 for limiting the position in conjunction with the spring 4.

[0039] Furthermore, the inner wall of the outlet of the second air passage 21 is provided with a third limiting step 23 that cooperates with and limits the propeller 33. This arrangement allows the propeller 33 to abut against and be limited by the third limiting step 23 when the gas flows in the same direction, preventing it from protruding. When the gas flows in the opposite direction, the propeller 33 located in the outlet of the second air passage 21 receives better force.

[0040] In practical applications, the propeller 33 is preferably a T-shaped structure, the outlet of the second air passage 21 is a circular hole structure, and the length of the propeller 33 is greater than the outlet diameter of the second air passage 21.

[0041] Furthermore, the connecting pipe 1 is provided with a first threaded portion 11, a second threaded portion 12, and an extension portion 13. The second threaded portion 12 and the extension portion 13 are respectively located at both ends of the first threaded portion 11. The air nozzle 2 is provided with a third threaded portion 22 and an air pipe locking portion 24. The third threaded portion 22 and the second threaded portion 12 are threadedly connected. With this configuration, the connecting pipe 1 and the air nozzle 2 are very convenient to install and remove.

[0042] Wherein, the third threaded portion 22 is an internal thread and the second threaded portion 12 is an external thread; of course, it is also possible that the third threaded portion 22 is an external thread and the second threaded portion 12 is an internal thread.

[0043] like Figure 8 As shown, the humidification bottle of this utility model includes a bottle body 5, a cap 6, and the aforementioned check valve. The cap 6 and the bottle body 5 are detachably connected. The cap 6 is provided with an air inlet 61, an air outlet 62, and a pressure relief port 63. The air outlet 62 is provided with a fourth threaded portion, which is threadedly connected to the first threaded portion 11 of the connecting pipe 1. This design makes it very convenient to assemble and disassemble the check valve and the humidification bottle. After assembly, the extension 13 of the connecting pipe 1 extends into the air outlet 62, increasing airtightness. At the same time, in order to improve the sealing effect, a sealing ring can be provided at the connection between the connecting pipe 1 and the air outlet 62. When the connecting pipe 1 is screwed onto the air outlet 62, the sealing ring is squeezed to form a high sealing effect.

[0044] The fourth threaded portion is an internal thread, and the first threaded portion 11 is an external thread.

[0045] In practical applications, the connecting pipe 1 and the air nozzle 2 are connected to form the valve body of the check valve, and the air rudder 3 and the suspension thrust device are used together to form the valve core of the check valve. The connecting pipe 1 and the air nozzle 2 are made of metal. After they are assembled on the air outlet 62, the fireproof effect is better and can meet the requirements of medical materials.

[0046] Example 2:

[0047] like Figure 6 and Figure 7 As shown, the levitation thrust device includes a first magnetic ring 41 and a second magnetic ring 42. A second limiting groove 16 is provided on the outlet of the first air passage 14. The second limiting groove 16 is located between the outlet of the first air passage 14 and the first limiting groove 15. A third limiting groove 34 is provided on the end of the check head 31. The first magnetic ring 41 is disposed in the second limiting groove 16, and the second magnetic ring 42 is disposed in the third limiting groove 34. The first magnetic ring 41 and the second magnetic ring 42 are arranged with the same poles and repel each other.

[0048] The difference between this embodiment 2 and embodiment 1 lies in the structure of the suspension thrust device. Specifically, in embodiment 1, the suspension thrust device is a spring 4, while in embodiment 2, the suspension thrust device is a first magnetic ring 41 and a second magnetic ring 42 with the same polarity repulsion. The thrust generated by the repulsion between the first magnetic ring 41 and the second magnetic ring 42 with the same polarity makes the outlet of the first air passage 14 normally open, and the use of magnetic rings allows the gas to pass through well. The rest of the structure and principle are the same as in embodiment 1, and will not be repeated here.

[0049] The embodiments of the present utility model have been described above with reference to the accompanying drawings. However, the present utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present utility model without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present utility model.

Claims

1. A check valve, characterized in that, include: A connecting pipe (1) is provided with a first air passage (14); Air nozzle (2), the air nozzle (2) and the connecting pipe (1) are detachably connected, the air nozzle (2) is provided with a second air passage (21), the second air passage (21) and the first air passage (14) are correspondingly arranged; The first end of the air rudder (3) is slidably disposed in the second air passage (21), and the second end of the air rudder (3) is disposed corresponding to the outlet of the first air passage (14); When the gas flows downstream, the rudder (3) opens the outlet of the first air passage (14) to connect the first air passage (14) and the second air passage (21); When the gas flows in reverse, the rudder (3) closes the outlet of the first air passage (14) so ​​that the first air passage (14) and the second air passage (21) are not connected.

2. The check valve according to claim 1, characterized in that: The air rudder (3) includes a check head (31), a rudder stock (32), and an air propeller (33); the air propeller (33) is located at the first end of the rudder stock (32), the air propeller (33) is correspondingly arranged with the outlet of the second air passage (21), and an air outlet notch (38) is formed; a third air outlet gap (37) is formed between the outer wall of the rudder stock (32) and the inner wall of the second air passage (21); the check head (31) is located at the second end of the rudder stock (32), the check head (31) is correspondingly arranged with the outlet of the first air passage (14), and a first air outlet gap (35) and a second air outlet gap (36) are formed.

3. A check valve according to claim 2, characterized in that: The first air outlet gap (35) is located between the end of the check head (31) and the outlet of the first air passage (14); the outlet of the first air passage (14) is provided with a first limiting groove (15), the check head (31) slides in the first limiting groove (15), and the second air outlet gap (36) is located between the outer wall of the check head (31) and the inner wall of the first limiting groove (15).

4. A check valve according to claim 3, characterized in that: A suspension thrust device is provided between the end of the check head (31) and the outlet of the first air passage (14).

5. A check valve according to claim 4, characterized in that: The suspension thrust device includes a spring (4), and a second limiting groove (16) is provided on the outlet of the first air passage (14). The second limiting groove (16) is located between the outlet of the first air passage (14) and the first limiting groove (15). A third limiting groove (34) is provided on the end of the anti-reverse head (31), and the two ends of the spring (4) are respectively located in the second limiting groove (16) and the third limiting groove (34).

6. A check valve according to claim 5, characterized in that: A first limiting step (17) is provided between the first limiting groove (15) and the second limiting groove (16) for cooperating with the end of the check head (31) for limiting; a second limiting step (18) is provided between the second limiting groove (16) and the outlet of the first air passage (14) for cooperating with the spring (4) for limiting.

7. A check valve according to claim 4, characterized in that: The levitation thrust device includes a first magnetic ring (41) and a second magnetic ring (42). A second limiting groove (16) is provided on the outlet of the first air passage (14), and the second limiting groove (16) is located between the outlet of the first air passage (14) and the first limiting groove (15). A third limiting groove (34) is provided on the end of the check head (31). The first magnetic ring (41) is located in the second limiting groove (16), and the second magnetic ring (42) is located in the third limiting groove (34). The first magnetic ring (41) and the second magnetic ring (42) are arranged with the same poles and repel each other.

8. A check valve according to claim 2, characterized in that: The inner wall of the outlet of the second air passage (21) is provided with a third limiting step (23) that cooperates with the propeller (33) for limiting.

9. A check valve according to claim 2, characterized in that: The connecting pipe (1) is provided with a first threaded part (11), a second threaded part (12) and an extension part (13), the second threaded part (12) and the extension part (13) are respectively located at both ends of the first threaded part (11); the air nozzle (2) is provided with a third threaded part (22) and an air pipe locking part (24), the third threaded part (22) and the second threaded part (12) are threadedly connected.

10. A humidification bottle, characterized in that: Includes a bottle body (5), a cap (6), and a check valve as described in any one of claims 1-9. The cap (6) and the bottle body (5) are detachably connected. The cap (6) is provided with an air inlet (61), an air outlet (62), and a pressure relief port (63). The air outlet (62) is provided with a fourth threaded part, which is threadedly connected to the first threaded part (11) of the connecting pipe (1).

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