Condensate collector for a breathing machine

Abstract

The utility model discloses a kind of condensate water collectors for breathing machine, and condensate water collector for breathing machine includes: collection bottle, the top of collection bottle has water inlet, for collecting the condensate in breathing machine pipeline, the bottom wall of collection bottle has water outlet, for discharging the condensate that collection bottle collects;Drainage assembly, drainage assembly is installed in collection bottle, and drainage assembly includes: connecting rod, float and stop piece, the middle part of connecting rod is rotatable in collection bottle and is arranged with the bottom wall of collection bottle interval, float is installed in one end of connecting rod, stop piece is installed in the other end of connecting rod, for opening and closing water outlet.According to the condensate water collector for breathing machine of the utility model embodiment, by setting drainage assembly in collection bottle, the automatic discharge of condensate in collection bottle can be realized, so as to reduce the security risk of breathing machine use, and the workload of medical staff can be reduced, and it is convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a condensate collector for ventilators. Background Technology

[0002] The humidification and heating functions of ventilators cause condensation in the tubing connecting the ventilator to the endotracheal tube. This condensation is highly susceptible to bacterial growth. Inhaling bacteria-laden air or allowing bacteria-laden condensation to backflow into the patient's airway increases the risk of ventilator-associated pneumonia (VAP). Therefore, a condensation collection bottle is needed to collect this condensation. However, existing condensation collection bottles are generally small in capacity to prevent excessive condensation and bacterial growth. This shortens the interval between emptying the bottles, increasing the frequency of emptying and thus the workload for healthcare workers. Furthermore, condensation can easily accumulate in the collection bottle while staff are busy with other clinical tasks, potentially even backflowing into the ventilator tubing, posing a significant safety hazard and warranting improvement. Utility Model Content

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a condensate collector for ventilators, which can reduce the workload of medical staff and lower the safety hazards associated with ventilator use.

[0004] A condensate collector for a ventilator according to an embodiment of the present invention includes: a collection bottle having an inlet at the top for collecting condensate from the ventilator tubing, and an outlet at the bottom wall for discharging the collected condensate; and a drainage assembly installed inside the collection bottle, comprising: a connecting rod, a float, and a plug. The middle portion of the connecting rod is rotatably disposed inside the collection bottle and spaced apart from the bottom wall of the collection bottle. The float is installed at one end of the connecting rod, and the plug is installed at the other end of the connecting rod for opening and closing the outlet. The float is adapted to float when the liquid level rises to drive the plug to open the outlet via the connecting rod, and the float is adapted to fall when the liquid level falls to drive the plug to close the outlet via the connecting rod.

[0005] According to an embodiment of the present invention, a condensate collector for a ventilator can automatically discharge condensate from the collection bottle by setting a drainage component inside the collection bottle. After the condensate is discharged, the outlet can be automatically sealed, preventing bacterial growth due to excessive condensate collection, preventing backflow of condensate into the ventilator tubing due to a full collection bottle, and preventing direct connection between the ventilator tubing and external waste disposal components. This prevents patients from inhaling gases mixed with pathogens and prevents condensate mixed with pathogens from flowing back into the patient's airway, reducing the incidence of ventilator-associated pneumonia, lowering safety risks associated with ventilator use, reducing the workload of medical staff, and facilitating operation.

[0006] According to some embodiments of the present invention, the bottom wall of the collection bottle has a support rod that extends in a direction perpendicular to the bottom wall, and at the end of the support rod away from the bottom wall, the middle part of the support rod and the connecting rod are rotatably connected by a pivot.

[0007] According to some embodiments of the present invention, the floating component includes: a float and a first connector, the float and the first connector are connected, the first connector is connected to one end of the connecting rod, and the float is located on the side of the one end of the connecting rod near the bottom wall.

[0008] In some embodiments, the first connector is a connecting rod, one end of which is rotatably connected to one end of the connecting rod via a pivot, and the other end of which is connected to the float.

[0009] In some embodiments, the first connector is a soft rope.

[0010] According to some embodiments of the present invention, the blocking component includes: a blocking cap and a second connecting member, the blocking cap and the second connecting member are connected, the second connecting member is connected to the other end of the connecting rod, the blocking cap and the outlet are positioned correspondingly, and the blocking cap is located on the side of the bottom wall away from the connecting rod and is adapted to contact the bottom wall to close the outlet.

[0011] In some embodiments, the second connector is a connecting rod, one end of which is rotatably connected to the other end of the connecting rod via a pivot, and the other end of which is connected to the plug cap.

[0012] In some embodiments, the second connector is a soft rope.

[0013] In some embodiments, the radial dimension of the plug is greater than the radial dimension of the outlet, and the plug is adapted to contact the portion of the bottom wall located on the outer periphery of the outlet to close the outlet.

[0014] In some embodiments, the collection bottle has two connecting tubes, one of which is located on the side of the bottom wall away from the connecting rod and is connected to the outlet, and the other connecting tube is connected to the inlet. The connecting tube extends in a direction perpendicular to the bottom wall and the radial dimension of the connecting tube is greater than the radial dimension of the plug cap, for limiting the plug cap.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of a condensate collector according to some embodiments of the present invention;

[0018] Figure 2 This is a partial structural schematic diagram of a condensate collector according to some embodiments of the present invention from one perspective;

[0019] Figure 3 This is a partial structural schematic diagram of a condensate collector according to some embodiments of the present invention from another perspective;

[0020] Figure 4 This is a cross-sectional view of a condensate collector according to some embodiments of the present invention.

[0021] Figure label:

[0022] Condensate collector 100,

[0023] Collection bottle 10, connecting pipe 11, inlet 12, outlet 13, bottom wall 14, support rod 141.

[0024] Drainage assembly 20, connecting rod 21, float 22, first connector 221, float ball 222, plug 23, plug cover 231, second connector 232, rotating shaft 30. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The following is for reference. Figures 1-4 Description of a condensate collector 100 for a ventilator according to an embodiment of the present invention.

[0029] like Figures 1-4 As shown, the condensate collector 100 for a ventilator according to an embodiment of the present invention includes: a collection bottle 10 and a drainage assembly 20. The top of the collection bottle 10 may have an inlet 12. The collection bottle 10 and the ventilator tubing can be connected through the inlet 12 to collect condensate in the ventilator tubing and prevent condensate from flowing back into the patient's airway. The bottom wall 14 of the collection bottle 10 may have an outlet 13. The collection bottle 10 and external waste disposal components (such as sewage pipes, drain pipes, or sludge collection boxes) can be connected through the outlet 13 to discharge condensate from the collection bottle 10.

[0030] This prevents bacteria from growing in the collection bottle 10 due to excessive condensation, and also prevents condensation from flowing back into the ventilator tubing when the collection bottle 10 is full. This prevents patients from inhaling air mixed with pathogens and prevents condensation mixed with pathogens from flowing back into the patient's airway, thereby reducing the incidence of ventilator-associated pneumonia and reducing safety hazards associated with ventilator use.

[0031] The drainage assembly 20 can be installed inside the collection bottle 10. The drainage assembly 20 may include a connecting rod 21, a float 22, and a blocking component 23. The middle portion of the connecting rod 21 is rotatably disposed inside the collection bottle 10, and the connecting rod 21 can be spaced apart from the bottom wall 14 of the collection bottle 10 to prevent interference between the connecting rod 21 and the bottom wall 14, thus improving the smoothness of the connecting rod 21's rotation. The float 22 can be installed at one end of the connecting rod 21 (e.g., ...). Figure 3 The plug 23 can be installed at the other end of the connecting rod 21 (as shown on the right end). Figure 3 (As shown on the left end), the plug 23 can open or close the outlet 13.

[0032] The connecting rod 21, the float 22, and the blocking component 23 work together to form a lever structure, which improves the smoothness of opening and closing the outlet 13 of the blocking component 23, and also improves the reliability and stability of the opening and closing of the outlet 13 of the blocking component 23. The float 22 can float when the liquid level (the condensate level in the collection bottle 10) rises, thereby driving one end of the connecting rod 21 upward (e.g., Figure 3 The movement is from bottom to top (as shown), and the link 21 can rotate to drive the other end of the link 21 downwards (as shown). Figure 3 The movement (shown from top to bottom) causes the blockage component 23 to move downwards, thereby opening the outlet 13.

[0033] Furthermore, the float 22 can drop as the liquid level falls to drive one end of the connecting rod 21 downwards (e.g., Figure 4 (As shown in the top-to-bottom direction) movement, and link 21 can rotate to drive the other end of link 21 upward (as shown in the top-to-bottom direction). Figure 4 The movement (shown from top to bottom) drives the blockage component 23 to move upward, so that the blockage component 23 closes the outlet 13, thereby realizing the automatic opening and closing of the outlet 13. That is, the blockage component 23 can automatically open the outlet 13 when the liquid level rises to a certain height, and automatically close the outlet 13 when the liquid level is lower than the above height.

[0034] This allows for the automatic discharge of condensate from the collection bottle 10, and the automatic sealing of the outlet 13 after discharge. It maintains a low liquid level and a low volume of condensate in the collection bottle 10, preventing bacterial growth due to excessive condensate collection, preventing backflow of condensate into the ventilator tubing, and preventing direct connection between the ventilator tubing and external waste disposal components. This prevents patients from inhaling bacteria-laden air and prevents bacteria-laden condensate from flowing back into their airways, reducing the incidence of ventilator-associated pneumonia and safety risks associated with ventilator use. It also reduces the workload of medical staff and is easy to operate.

[0035] According to an embodiment of the present invention, the condensate collector 100 for a ventilator, by providing a drainage component 20 inside the collection bottle 10, can automatically discharge the condensate inside the collection bottle 10, and can automatically seal the outlet 13 after the condensate is discharged. This can prevent bacteria from growing in the collection bottle 10 due to excessive condensate collection, prevent condensate from flowing back into the ventilator tubing due to the collection bottle 10 being full, and prevent the ventilator tubing from being directly connected to external waste disposal components. This can prevent patients from inhaling gases mixed with pathogens, and can prevent condensate mixed with pathogens from flowing back into the patient's airway, thereby reducing the incidence of ventilator-associated pneumonia, reducing safety hazards in ventilator use, reducing the workload of medical staff, and facilitating operation.

[0036] like Figure 2 , Figure 3 and Figure 4 As shown, according to some embodiments of the present invention, the bottom wall 14 of the collection bottle 10 may have a support rod 141, and the support rod 141 may be arranged in a direction perpendicular to the bottom wall 14 (e.g., Figure 3 Extending in the vertical direction (as shown), and at the end of the support rod 141 furthest from the bottom wall 14 (as shown in the figure). Figure 3 As shown at the upper end, the middle part of the support rod 141 and the connecting rod 21 can be rotatably connected by the pivot 30. On the one hand, the connecting rod 21, the float 22 and the blockage 23 cooperate to form a lever structure, which can improve the smoothness of opening and closing the outlet 13 of the blockage 23, and improve the reliability and stability of opening and closing the outlet 13 of the blockage 23. On the other hand, it can separate the connecting rod 21 from the bottom wall 14 of the collection bottle 10, which can prevent the connecting rod 21 and the bottom wall 14 from interfering with each other, and improve the smoothness of the rotation of the connecting rod 21.

[0037] like Figure 3 and Figure 4 As shown, according to some embodiments of the present invention, the float 22 may include a float 222 and a first connector 221, the float 222 and the first connector 221 are connected, and the first connector 221 and one end of the connecting rod 21 (e.g. Figure 3 The right end shown is connected, and the float 222 can be located on the side of one end of the connecting rod 21 near the bottom wall 14 (as shown). Figure 3 (As shown on the lower side), the distance between the float 222 and the bottom wall 14 can be shortened, the liquid level can be maintained at a lower height, and the condensate in the collection bottle 10 can be maintained at a lower volume.

[0038] This prevents bacteria from growing in the collection bottle 10 due to excessive condensation, prevents condensation from flowing back into the ventilator tubing when the collection bottle 10 is full, and prevents direct connection between the ventilator tubing and external waste disposal components. This prevents patients from inhaling air mixed with pathogens and prevents condensation mixed with pathogens from flowing back into the patient's airway, thereby reducing the incidence of ventilator-associated pneumonia and reducing safety hazards associated with ventilator use.

[0039] Understandably, the mass of the float 222 is greater than the mass of the plug 23, so that the plug 23 can close the outlet 13 under the gravity of the float 222, and can improve the sealing effect of the outlet 13. This can prevent condensate from leaking from the outlet 13 when the plug 23 closes the outlet 13, and can prevent the ventilator tubing from being directly connected to the external waste disposal components. This can prevent patients from inhaling gases mixed with pathogens, reduce the incidence of ventilator-associated pneumonia, and reduce the safety hazards of ventilator use.

[0040] Furthermore, the float 222 can be a solid sphere with a density less than that of condensate or a sphere with an internal vacuum, so that the float 222 can be subject to buoyancy in the condensate to overcome its own weight and float on the liquid surface, so that the blockage component 23 can automatically open the outlet 13 under its own weight. In addition, the buoyancy of the float 222 can be transmitted to the blockage component 23 through the first connector 221, so that the blockage component 23 can automatically open the outlet 13, which can improve the smoothness of opening and closing of the outlet 13, and can improve the reliability and stability of opening and closing of the outlet 13.

[0041] like Figure 3 and Figure 4 As shown, in some embodiments, the first connector 221 can be a connecting rod, and one end of the connecting rod (e.g. Figure 3 The upper end shown) and one end of the connecting rod 21 (as shown) Figure 3 The right end shown can be rotatably connected via the pivot 30, and the other end of the connecting rod (as shown) Figure 3 The lower end shown can be connected to the float 222. On the one hand, the buoyancy of the float 222 can be transmitted to the blockage 23 through the first connector 221 and the connecting rod 21. On the other hand, it can increase the degree of freedom at the connection between the connecting rod 21 and the first connector 221, improve the smoothness of opening and closing the outlet 13, and improve the reliability and stability of opening and closing the outlet 13.

[0042] On the other hand, this allows multiple components (such as connecting rod 21 or plug 23) within the entire drainage assembly 20 to move together with the float 222 as the liquid level changes, thereby reducing the amount of condensate drained from the collection bottle 10 during a single discharge process and reducing the range of liquid level maintenance, thus improving the accuracy of maintaining the liquid level.

[0043] like Figure 3 and Figure 4 As shown, in some embodiments, the first connector 221 can be a soft rope, one end of which (e.g. Figure 3 The upper end shown can be connected to one end of the connecting rod 21 (such as...). Figure 3 Connect the right end shown, and the other end of the soft rope (as shown) Figure 3 The lower end shown can be connected to the float 222, so that the blockage part 23 can automatically open the outlet 13 under its own gravity when the float 222 floats, until the float 222 drops to a certain height with the liquid level, so that the blockage part 23 can automatically close the outlet 13 under the gravity of the float 222. Based on the realization of automatic discharge of condensate and maintenance of the liquid level at a certain height, the structure of the drainage component 20 can be simplified and the cost can be reduced.

[0044] like Figure 4 As shown, according to some embodiments of the present invention, the plugging member 23 may include a plugging cap 231 and a second connecting member 232. The plugging cap 231 may be connected to the second connecting member 232, and the second connecting member 232 may be connected to the other end of the connecting rod 21 (e.g., Figure 4 The left end shown is connected, and the plug cap 231 corresponds to the outlet 13. The plug cap 231 can be located on the side of the bottom wall 14 away from the connecting rod 21 (e.g., Figure 4 (as shown on the lower side), and the plug 231 can contact the bottom wall 14 to close the outlet 13, so that the plug 231 can automatically open and close the outlet 13.

[0045] like Figure 3 and Figure 4 As shown, in some embodiments, the second connector 232 can be a connecting rod, with one end of the connecting rod (e.g., Figure 4 The upper end shown) and the other end of the connecting rod 21 (as shown) Figure 4 The left end shown can be rotatably connected via the pivot 30, and the other end of the connecting rod (as shown) Figure 4 The lower end shown can be connected to the plug cover 231, so that the connecting rod 21 can directly apply force to the plug cover 231 through the second connecting member 232, so that the plug cover 231 can automatically open and close the water outlet 13. It can also increase the degree of freedom at the connection between the connecting rod 21 and the second connecting member 232, thereby improving the smoothness of opening and closing the water outlet 13, and improving the reliability and stability of opening and closing the water outlet 13.

[0046] like Figure 3 and Figure 4 As shown, in some embodiments, the second connector 232 can be a soft rope, so that the plug cover 231 can automatically open the outlet 13 under its own gravity when the float 222 floats, until the float 222 drops to a certain height with the liquid level, so that the plug 23 can automatically close the outlet 13 under the gravity of the float 222. Based on the realization of automatic discharge of condensate and maintenance of the liquid level at a certain height, the structure of the drainage component 20 can be simplified and the cost can be reduced.

[0047] like Figure 4 As shown, in some embodiments, the radial dimension of the plug 231 can be larger than the radial dimension of the outlet 13, and the plug 231 can contact the portion of the bottom wall 14 located on the outer periphery of the outlet 13 to automatically close the outlet 13. This can increase the contact area between the plug 231 and the bottom wall 14 when the outlet 13 is closed, improve the sealing effect of the outlet 13, prevent condensate from leaking from the outlet 13 when the plug 23 closes the outlet 13, prevent the ventilator tubing from being directly connected to external waste disposal components, thereby preventing patients from inhaling gases mixed with pathogens, reducing the incidence of ventilator-associated pneumonia, and reducing safety hazards associated with ventilator use.

[0048] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the collection bottle 10 may have two connecting pipes 11, which can be connected to the inlet / outlet and the outlet 13 respectively, so that the collection bottle 10 can be connected to the external pipeline, so that the collection bottle 10 can be connected to the ventilator pipeline and the external waste treatment components (such as sewage pipe, drain pipe or sludge collection box), which is conducive to the automatic collection and discharge of condensate in the ventilator pipeline by the collection bottle 10 and is easy to operate.

[0049] One of the two connecting pipes 11 can be located on the side of the bottom wall 14 away from the connecting rod 21 (e.g.) Figure 1 The connecting pipe 11, located on the lower side of the bottom wall 14, can be connected to the outlet 13, and the connecting pipe 11 can be connected in a direction perpendicular to the bottom wall 14 (e.g., the lower side shown), and the connecting pipe 11 can be connected in a direction perpendicular to the bottom wall 14 (e.g., the lower side shown). Figure 4 The connecting pipe 11 extends in the vertical direction (as shown) to limit the blocking cover 231. The radial dimension of the connecting pipe 11 can be larger than the radial dimension of the blocking cover 231, so that the blocking cover 231 can move within the connecting pipe 11. This can improve the smoothness of opening and closing the outlet 13 of the blocking cover 231, and improve the reliability and stability of opening and closing the outlet 13 of the blocking cover 231.

[0050] Other configurations and operations of the condensate collector 100 for a ventilator according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here. In the description of the present invention, "first feature" and "second feature" may include one or more of these features. The vertical, horizontal, and front-back directions are defined as shown in the figures.

[0051] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Moreover, "above," "over," and "on top" of the second feature include the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A condensate collector for a ventilator, characterized in that, include: A collection bottle, the top of which has an inlet for collecting condensate from the ventilator tubing, and the bottom wall of which has an outlet for discharging the collected condensate; A drainage assembly is installed inside a collection bottle. The drainage assembly includes a connecting rod, a float, and a blocking component. The middle portion of the connecting rod is rotatably disposed within the collection bottle and spaced apart from the bottom wall of the collection bottle. The float is installed at one end of the connecting rod, and the blocking component is installed at the other end of the connecting rod, used to open and close the water outlet. The floating element is adapted to float when the liquid level rises to drive the blocking element to open the outlet via the connecting rod, and the floating element is adapted to fall when the liquid level falls to drive the blocking element to close the outlet via the connecting rod.

2. The condensate collector for a ventilator according to claim 1, characterized in that, The bottom wall of the collection bottle has a support rod that extends in a direction perpendicular to the bottom wall, and at the end of the support rod away from the bottom wall, the middle part of the support rod and the connecting rod are rotatably connected by a pivot.

3. The condensate collector for a ventilator according to claim 1, characterized in that, The floating component includes a float and a first connector, the float and the first connector being connected, the first connector being connected to one end of the connecting rod, and the float being located on the side of the one end of the connecting rod closer to the bottom wall.

4. The condensate collector for a ventilator according to claim 3, characterized in that, The first connector is a connecting rod, one end of which is rotatably connected to one end of the connecting rod via a pivot, and the other end of which is connected to the float.

5. The condensate collector for a ventilator according to claim 3, characterized in that, The first connector is a soft rope.

6. The condensate collector for a ventilator according to claim 1, characterized in that, The blocking component includes: a blocking cap and a second connector, the blocking cap and the second connector being connected, the second connector being connected to the other end of the connecting rod, the blocking cap and the outlet being positioned correspondingly, and the blocking cap being located on the side of the bottom wall away from the connecting rod and adapted to contact the bottom wall to close the outlet.

7. The condensate collector for a ventilator according to claim 6, characterized in that, The second connector is a connecting rod, one end of which is rotatably connected to the other end of the connecting rod via a pivot, and the other end of which is connected to the plug cap.

8. The condensate collector for a ventilator according to claim 6, characterized in that, The second connector is a soft rope.

9. The condensate collector for a ventilator according to claim 6, characterized in that, The radial dimension of the plug is greater than the radial dimension of the outlet, and the plug is adapted to contact the portion of the bottom wall located on the outer periphery of the outlet to close the outlet.

10. The condensate collector for a ventilator according to claim 6, characterized in that, The collection bottle has two connecting pipes. One connecting pipe is located on the side of the bottom wall away from the connecting rod and is connected to the outlet. The other connecting pipe is connected to the inlet. The connecting tube extends in a direction perpendicular to the bottom wall, and the radial dimension of the connecting tube is greater than the radial dimension of the plug cap, which is used to limit the position of the plug cap.

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