A high absorption rate carbon dioxide gas collection card

Abstract

The present invention discloses a high-absorption carbon dioxide gas collection card, including a blowing cavity, wherein an adsorption assembly is arranged in the blowing cavity, wherein the adsorption assembly includes a rotating shaft arranged in the blowing cavity, an annular wall arranged in the blowing cavity, and a rotating body rotatably connected to the rotating shaft, wherein the rotating body is provided with a plurality of air chamber partitions extending radially, wherein the air chamber partitions separate a plurality of mutually independent adsorption spaces between the rotating shaft and the annular wall, wherein the annular wall is provided with an air outlet and an air blowing port both of which are connected to the outside world, wherein an adsorption sheet is arranged in each of the adsorption spaces; and the air outlet and the air blowing port are respectively connected to two different independent spaces. Through the above arrangement, the gas is blown into the adsorption space from the air blowing port, and the rotating body can be rotated when the gas is blown in from the air blowing port, and the adsorption space is in a closed state after being turned away from the air blowing port, and the gas in the adsorption space can fully contact with the adsorption sheet in the adsorption space, thereby greatly improving the adsorption efficiency.

Description

Technical Field

[0001] The invention relates to the field of gas collection, in particular to a carbon dioxide gas collection card with high absorption rate. Background Art

[0002] The principle of detecting Helicobacter pylori infection is to let the person being tested take a urea capsule containing the isotope C-13 or C-14. Helicobacter pylori contains urease that can decompose urea to produce carbon dioxide. If the person being tested is infected with Helicobacter pylori, the capsule will decompose the carbon dioxide gas containing the isotope C-13 or C-14. A high-absorption carbon dioxide gas collection card is used to collect the gas exhaled by the person being tested, and the content of C-13 or C-14 in the carbon dioxide is detected to determine whether the person being tested is infected with Helicobacter pylori.

[0003] Most of the existing carbon dioxide gas collection cards and carbon dioxide adsorption sheets on the market are arranged on the bottom wall of the gas flow channel. When blowing, the carbon dioxide flows along the surface of the adsorption sheet, resulting in low carbon dioxide gas absorption efficiency and requiring long time for blowing and gas collection. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a carbon dioxide gas collection card with a high absorption rate.

[0005] The solution of the present invention to solve its technical problem is:

[0006] A high-absorption carbon dioxide gas collection card comprises an air blowing cavity, a detection window is provided on the air blowing cavity, an adsorption assembly is provided in the air blowing cavity, the adsorption assembly comprises a rotating shaft, an annular wall, and a rotating body rotatably connected to the rotating shaft, the rotating body is provided with a plurality of air chamber partitions extending radially outwardly along the rotating body, the air chamber partitions separate a plurality of adsorption spaces between the rotating shaft and the annular wall, an adsorption sheet fixedly connected to the air chamber partitions is provided in the adsorption space; an air blowing port and an air outlet are provided on the annular wall, the air blowing port and the air outlet are respectively connected to two different adsorption spaces, the air blowing port is connected to the outside world, and the air outlet is connected to the outside world.

[0007] As a further improvement of the above technical solution, a pressure valve is provided on the air outlet.

[0008] As a further improvement of the above technical solution, an anti-backflow valve is provided on the air outlet.

[0009] As a further improvement of the above technical solution, it also includes a ventilation tube, which includes a main airway and a bronchial passage that are interconnected, the two ends of the main airway are a vent and an air blowing port, respectively, and the air blowing port is connected to the outside world through the vent; a pressure valve is provided on the bronchial passage, and the air outlet is provided on the bronchial passage, and the air outlet is connected to the vent through the pressure valve.

[0010] As a further improvement of the above technical solution, the blowing cavity is further provided with an indication window, the indication window is provided with an indicator, and the indication window is located between the adsorption sheet and the pressure valve on the main airway.

[0011] As a further improvement of the above technical solution, the blowing cavity is composed of a base and a cover, and the base and the cover are detachably connected.

[0012] As a further improvement of the above technical solution, the rotating shaft and the annular wall are both arranged on the base.

[0013] As a further improvement of the above technical solution, the base is a shell with an open upper side, and the cover is a plate-shaped component.

[0014] The beneficial effect of the present invention is that through the above arrangement, gas is blown into the adsorption space from the blowing port, and when the gas is blown into the blowing port, the rotating body can rotate. After the adsorption space turns away from the blowing port, it is in a closed state, and the gas in the adsorption space can fully contact with the adsorption sheet in the adsorption space, thereby greatly improving the adsorption efficiency.

[0015] In addition, during the blowing process, the rotation speed of the rotating body changes continuously, so that the gas in the adsorption space continuously convects and impacts the adsorption sheet, further improving the gas adsorption efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the blowing cavity structure of the first embodiment;

[0017] Figure 2 is a three-dimensional diagram of the rotating body of the first embodiment;

[0018] Figure 3 It is a structural diagram of the second embodiment.

[0019] In the attached drawings: 100 - blowing cavity; 110 - blowing port; 120 - air outlet; 130 - rotating shaft; 140 - annular wall; 150 - air vent; 200 - rotating body; 210 - air chamber spacer; 220 - adsorption sheet; 300 - pressure valve; 400 - anti-backflow valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] The embodiments are as follows, refer to Figures 1 to 3 A high absorption rate carbon dioxide gas collection card includes a blowing cavity 100, which can be formed by splicing parts or by integral molding. The blowing cavity 100 is provided with a detection window (not shown in the figure), which can be understood to be located above the adsorption sheet 220, and the detection window has a low β particle absorption rate, so as to ensure that the gas collection card is placed in 14The CO2 detector can accurately detect when it is in use. The blowing cavity 100 is provided with an adsorption assembly, which includes a rotating shaft 130 provided in the blowing cavity 100, an annular wall 140 provided in the blowing cavity 100, and a rotating body 200 rotatably connected to the rotating shaft 130, and the rotating shaft 130 and the annular wall 140 are both fixed on the cavity wall of the blowing cavity 100. A rotating hole is provided in the middle of the rotating body 200, and the rotating hole covers the rotating shaft 130 so that the rotating body 200 and the rotating shaft 130 are rotatably connected. The rotating body 200 provided on the outer side of the rotating body 200 is provided with a plurality of air chamber partitions 210 extending outwardly along the radial direction of the rotating body, and the length of the air chamber partition is set to just extend to abut against the inner wall of the annular wall 140, and the height of the air chamber partition corresponds to the height of the blowing cavity 100, so that the air chamber partition can separate a plurality of independent adsorption spaces. The air chamber partition 210 separates a number of independent adsorption spaces between the rotating shaft 130 and the annular wall 140, and each of the adsorption spaces is provided with an adsorption sheet 220 fixed to the air chamber partition 210; the air outlet 110 and the air outlet 120 are respectively connected to two different adsorption spaces. In the first embodiment, the air outlet 110 and the air outlet 120 are both provided on the annular wall 140, and are connected to the outside through a pipe provided in the cavity. Specifically, the air outlet 110 and the air outlet 120 are provided, and are separated by at least one adsorption air chamber along the annular wall 140, so that the air blown in from the air outlet 110 will not directly pass through the air outlet 120 and be discharged to the outside. It can be understood that a pressure limit should be provided at the air outlet 120, and the pressure limit can be achieved by providing an air outlet 120 with a smaller flow area, or by providing a pressure valve 300 at the air outlet 120. Furthermore, the axis of the air outlet 110 is not perpendicular to the annular wall 140 , so that when air flows in from the air outlet 110 , the rotating body 200 can be driven to rotate more easily by the air flow.

[0026] Through the above arrangement, the gas is blown into the adsorption space from the air port 110, and the rotating body 200 can be rotated when the gas is blown into the air port 110. After the adsorption space is turned away from the air port 110, it is in a closed state, and the gas in the adsorption space can fully contact the adsorption sheet 220 in the adsorption space, thereby greatly improving the adsorption efficiency. People do not need to exhale into the air collection card for a long time and multiple times, the user experience is better, and the probability of back suction is lower.

[0027] In addition, during the blowing process, the rotation speed of the rotating body 200 changes continuously, so that the gas in the adsorption space continuously convects and impacts the adsorption sheet 220, further improving the gas adsorption efficiency.

[0028] Furthermore, a pressure valve 300 is provided on the gas outlet 120. By providing the pressure valve 300, on the one hand, it is ensured that the gas inlet cavity will not burst due to being too large, and on the other hand, it is prevented from directly discharging the gas outlet 120, so that a certain carbon dioxide content can be maintained in the gas inlet cavity.

[0029] Furthermore, the air blowing port 110 is provided with an anti-back-inhalation valve 400 to prevent the material in the adsorption sheet 220 from being back-inhaled into the air blowing port 110 and causing the user to accidentally inhale the material into the mouth.

[0030] Further, see Figure 3 , Embodiment 2 is as follows, the air collecting card also includes a vent pipe, the vent pipe includes a main airway and a branch airway that are interconnected, the two ends of the main airway are a vent 150 and a blow port 110 respectively, the blow port 110 is connected to the outside through the vent 150; the branch airway is provided with a pressure valve 300, the air outlet 120 is provided on the branch airway, and the air outlet 120 is connected to the vent 150 through the pressure valve 300. With the structure of Embodiment 2, it is not necessary to open the air outlet 120 on the annular wall 140, the difficulty of molding and processing the annular wall 140 is lower, and it is more conducive to ensuring its accuracy, thereby ensuring the independence of the adsorption space and improving the efficiency of the interaction between the airflow and the adsorption sheet 220.

[0031] Furthermore, the blowing cavity 100 is also provided with an indicator window (not shown in the figure), on which an indicator is provided, and the indicator window is located between the adsorption sheet 220 and the pressure valve 300 on the main airway. The indicator window is used to indicate whether the carbon dioxide gas entering the cavity is sufficient. The indicator window is provided with an indicator layer, such as phenolphthalein, thymolphthalein, trinitrotoluene, tropaeolum, curcumin, etc.

[0032] Furthermore, the blowing cavity 100 is composed of a base and a cover, and the base and the cover are detachably connected. It is understandable that the blowing cavity 100 is obviously provided with a through hole on its side wall, and the through hole is connected to the pipe connecting the air outlet 120 and the blowing port 110, so that the air outlet 120 and the blowing port 110 can be connected to the outside through the pipe. The base and the cover are detachably connected, and the specific method can be a snap connection, a threaded connection or a mortise and tenon connection. After the air collecting card is used, the rotating body 200 provided with the adsorption sheet 220 can be removed by disassembling the cover, which can reduce medical waste and reduce the cost of waste disposal. When the air collecting card is reused, it can be connected to the pipe of the blowing port 110 by using a commonly used medical disposable mouthpiece to ensure hygiene and prevent bacterial infection.

[0033] Furthermore, the rotating shaft 130 and the annular wall 140 are both arranged on the base, so that when the cover is removed, the rotating body 200 will not be stuck with the rotating shaft 130 and will not be lifted up with the cover and accidentally fall down, and it is more reliable to handle the rotating body 200 containing radioactive materials.

[0034] Furthermore, the base is a shell with an open upper side, and the cover is a plate-shaped component. The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the specification should still fall within the scope covered by the patent of the present invention.

Claims

1. A high-absorption carbon dioxide gas collection card, comprising a blowing cavity (100), wherein a detection window is provided on the blowing cavity (100), characterized in that: The blowing cavity (100) is provided with an adsorption assembly, the adsorption assembly comprising a rotating shaft (130), an annular wall (140), and a rotating body (200) rotatably connected to the rotating shaft (130), the rotating body (200) being provided with a plurality of air chamber partitions (210) extending radially outward from the rotating body (200), the air chamber partitions (210) separating a plurality of adsorption spaces between the rotating shaft (130) and the annular wall (140), the adsorption spaces being provided with a solid An adsorption sheet (220) is connected to the air chamber partition (210); an air blowing port (110) and an air outlet (120) are provided on the annular wall (140); the air blowing port (110) and the air outlet (120) are respectively connected to two different adsorption spaces, the air blowing port (110) is connected to the outside world, and the air outlet (120) is connected to the outside world; a pressure valve (300) is provided on the air outlet (120), and an anti-backflow valve (400) is provided on the air blowing port (110).

2. A high absorption rate carbon dioxide gas collection card according to claim 1, characterized in that: The device also comprises a ventilation tube, wherein the ventilation tube comprises a main airway and a bronchial passage that are interconnected, wherein the two ends of the main airway are respectively a vent (150) and an air blowing port (110), wherein the air blowing port (110) is connected to the outside through the vent (150); a pressure valve (300) is arranged on the bronchial passage, and the air outlet (120) is connected to the vent (150) through the pressure valve (300).

3. A high absorption rate carbon dioxide gas collection card according to claim 2, characterized in that: The blowing cavity (100) is also provided with an indication window, on which an indicator is provided, and the indication window is located between the adsorption sheet (220) and the pressure valve (300) on the main airway.

4. A high absorption rate carbon dioxide gas collection card according to claim 1, characterized in that: The blowing cavity (100) is composed of a base and a cover, and the base and the cover are detachably connected.

5. A high absorption rate carbon dioxide gas collection card according to claim 4, characterized in that: The rotating shaft (130) and the annular wall (140) are both arranged on the base.

6. A high absorption rate carbon dioxide gas collection card according to claim 5, characterized in that: The base is a shell with an open upper side, and the cover is a plate-shaped component.

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