CN218823418U - Ventilation device and closed-circuit sampler - Google Patents

Abstract

The application provides a ventilation device and a closed-circuit sampler. The venting device includes a vent and a connector. The inside of ventilation spare is equipped with the chamber that catchments, and the outer wall of ventilation spare is equipped with the first air vent that runs through, first air vent and the chamber intercommunication that catchments. The connecting piece is connected with the ventilating piece, and the connecting piece is provided with a second ventilating hole communicated with the water collecting cavity. The application provides a breather is provided with first air vent at the piece outer wall of ventilating, when playing the effect of ventilating, gets into the rainwater or the outside liquid in the chamber that catchments and can discharge through first air vent, prevents that rainwater or outside liquid from getting into closed circuit sampler, improves the accuracy that boat coal oil quality detected.

Description

Ventilation device and closed-circuit sampler

Technical Field

The application relates to the technical field of aviation fuel detection, in particular to a ventilating device and a closed-circuit sampler.

Background

The closed-circuit sampler, which is generally applied to aviation fuelling vehicles and ground oil transportation systems, is installed beside an oil depot and fuelling vehicle filter, and its interface is connected with the inlet and outlet of the filter, and is used for observing and detecting cleanliness, density, temperature and water content of the aviation oil before and after filtration.

The existing closed-circuit sampler adopts a ventilation mode that holes are formed in two sides of a cover plate, and rainwater easily enters the closed-circuit sampler through the holes due to the siphon effect, so that the quality of the aviation kerosene is polluted, and the accuracy of the quality detection of the aviation kerosene oil product is influenced.

SUMMERY OF THE UTILITY MODEL

The application provides a ventilation device and a closed-circuit sampler.

One aspect of the present application provides a ventilator device comprising:

the water collecting device comprises an air communicating piece, a water collecting cavity is arranged in the air communicating piece, a first through air hole is formed in the outer wall of the air communicating piece, and the first through air hole is communicated with the water collecting cavity;

and the connecting piece is connected with the ventilating piece and is provided with a second ventilating hole communicated with the water collecting cavity.

The application provides a ventilation unit is provided with first air vent at the piece outer wall of ventilating, when playing the effect of ventilating, gets into the rainwater or the outside liquid that catchments the chamber and can discharge through first air vent, prevents that rainwater or outside liquid from getting into closed circuit sampler, improves the accuracy of aviation kerosene oil quality testing.

Further, the ventilation piece includes the diapire and connects in the lateral wall of diapire week side, the diapire with the lateral wall encloses to close and forms the chamber catchments, first air vent is located the lateral wall. The water collecting cavity has a certain volume, can store a certain amount of rainwater or external liquid, and prevents the rainwater or the external liquid from entering the closed-circuit sampler to pollute aviation fuel.

Further, the first vent hole is formed in the connecting position of the side wall and the bottom wall;

the joint of the side wall and the bottom wall comprises a transition part, the transition part is obliquely arranged relative to the bottom wall, and the first vent hole is arranged in the transition part;

the first vent hole is perpendicular or oblique to the surface of the transition portion. The first vent hole is vertically or obliquely arranged to help rainwater or external liquid entering the water collecting cavity to be discharged.

Further, the transition part is arranged around the periphery of the ventilation piece, and the transition part extends from the bottom end of the side wall to the axial direction close to the bottom wall and the ventilation piece;

one end of the transition portion, which is close to the side wall, is far away from the axis of the ventilation piece compared with one end of the transition portion, which is close to the bottom wall. The transition portion that the slope set up can increase the cross-sectional area of first air vent, improves the visual degree of first air vent, and whether convenient to use person observes first air vent from closed circuit sampler outside and blocks up, convenient clearance.

Further, the first vent hole comprises a first vent end and a second vent end, the first vent end is communicated with the water collecting cavity, and the second vent end is communicated with the outside of the vent piece;

the second venting end extends to a surface of the transition portion. The first air vent intercommunication catchments the chamber and ventilates the piece outside, and the ventilation effect is better, and the second air vent end helps preventing that first air vent blocks up to the surface of transition portion.

Furthermore, the bottom wall is provided with a mounting hole, the mounting hole is communicated with the water collecting cavity, and at least part of the connecting piece penetrates through and is fixed in the mounting hole; the connecting piece includes the installation department, the installation department wears to establish and is fixed in the mounting hole. The installation part is connected with the installation hole in a matched mode, so that the connection of the connecting piece and the ventilation piece is more stable.

Furthermore, the ventilation piece further comprises a first fixing part, the first fixing part extends from the bottom wall to a direction close to the water collecting cavity along the axis direction of the ventilation piece, the first fixing part is provided with a first matching hole communicated with the mounting hole, and the mounting part penetrates through and is fixed to the mounting hole and the first matching hole;

one end of the first fixing portion extending to the water collecting cavity is far away from the bottom wall compared with the first vent hole. The installation department cooperates with first mating holes, increases the area of contact of connecting piece and ventilation spare, improves the firm degree that the two are connected. One end of the first fixing part is higher than the first vent hole, so that the liquid level in the water collecting cavity can be prevented from entering the closed-circuit sampler when the liquid level is higher than the end part of the first fixing part.

Furthermore, the ventilation piece further comprises a second fixing part, the second fixing part extends along the axis direction of the ventilation piece from the bottom wall to the direction far away from the water collecting cavity, the second fixing part is provided with a second matching hole communicated with the mounting hole, and the mounting part is penetrated through and fixed in the second matching hole, the mounting hole and the first matching hole;

the second fixing portion, the first fixing portion and the mounting hole are coaxially arranged in the axial direction of the ventilation piece. The second fixing portion helps to further improve the connection stability of the connecting member and the vent member.

Further, the ventilation device also comprises a sealing element which is sleeved outside the connecting element from the connecting part of the ventilation element and the connecting element; and/or

The number of the first vent holes is multiple, and the first vent holes are arranged at intervals along the circumferential direction of the vent piece; and/or

The bottom surface of the water collecting cavity is obliquely arranged in a direction close to the first vent hole relative to the axis of the vent piece; and/or

The ventilating device further comprises a top cover, an opening part communicated with the water collecting cavity is formed in the top of the ventilating piece, and the top cover is detachably arranged on the opening part. The sealing piece ensures the sealing performance between the ventilation device and the closed-circuit sampler, and prevents rainwater or external liquid from entering the closed-circuit sampler through the joint of the ventilation piece and the connecting piece. The plurality of first vent holes enable the ventilation effect of the closed-circuit sampler to be better, and are beneficial to draining water. The chamber bottom surface that catchments sets up towards first air vent slope for rainwater or outside liquid discharge chamber that catchments reduces the possibility of chamber hydrops that catchments to a certain extent. The detachable top cover is taken down, so that a user can conveniently clean or observe the internal condition of the ventilation device.

One aspect of the present application provides a closed circuit sampler, comprising a closed circuit sampler body, a cover plate capable of covering the closed circuit sampler body, and the ventilation device of any one of the above items; the connecting piece is connected with the cover plate, and the second vent hole is communicated with the inside of the closed-circuit sampler body;

the cover plate is provided with a through hole, and the connecting piece at least partially penetrates through and is fixed in the through hole; and/or

The connecting piece comprises a limiting part which is abutted against the cover plate. The limiting part can prevent the connecting piece from displacing in the vertical direction relative to the cover plate and is beneficial to the disassembly and assembly of the connecting piece.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of an embodiment of the closed-loop sampler of the present application;

fig. 2 is a schematic cross-sectional view of the closed-circuit sampler shown in fig. 1.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means at least two. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The vent device of the embodiment of the application comprises a vent piece and a connecting piece. The inside of ventilation spare is equipped with the chamber that catchments, and the outer wall of ventilation spare is equipped with the first air vent that runs through, first air vent and the chamber intercommunication that catchments. The connecting piece is connected with the ventilating piece, and the connecting piece is provided with a second ventilating hole communicated with the water collecting cavity.

The application provides a ventilation unit is provided with first air vent at the piece outer wall of ventilating, when playing the effect of ventilating, gets into the rainwater or the outside liquid that catchments the chamber and can discharge through first air vent, prevents that rainwater or outside liquid from getting into closed circuit sampler, improves the accuracy of aviation kerosene oil quality testing.

The closed-circuit sampler of the embodiment of the application comprises a closed-circuit sampler body, a cover plate which can cover the closed-circuit sampler body and a ventilation device; the connecting piece is connected with the cover plate, and the second vent hole is communicated with the inside of the closed-circuit sampler body. The cover plate is provided with a through hole, and the connecting piece at least partially penetrates through and is fixed in the through hole; and/or the connecting piece comprises a limiting part which is abutted against the cover plate.

The aeration device and closed-circuit sampler of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Fig. 1 shows a schematic view of an embodiment of a closed-circuit sampler 1 according to the present application. The closed-circuit sampler 1 is applied to aviation fuelling vehicles and ground oil delivery systems, is arranged beside oil depots and fuelling vehicle filters, is connected with an inlet and an outlet of the filters through a connector, and is used for observing and detecting indexes such as water content before and after aviation oil filtration. The moisture content is used as an important index for the detection of the aviation kerosene, and if rainwater or external liquid enters the inside of the closed-circuit sampler 1 through a ventilation structure on the closed-circuit sampler 1 due to the siphon effect, the accuracy of the detection of the quality of the aviation kerosene oil product is affected. As shown in fig. 1, the closed-circuit sampler 1 of the present embodiment includes a closed-circuit sampler body (not shown), a cover plate 20 that can cover the closed-circuit sampler body, and a ventilation device 10. It will be appreciated that the aeration device 10 is used to achieve gas circulation inside and outside the closed circuit sampler 1, balancing the difference between the internal pressure and the external pressure, and thus avoiding damage due to too high internal gas pressure of the closed circuit sampler 1; and further prevents rain water or external liquids from entering the interior of the closed circuit sampler 1 due to siphoning or splashing. In some embodiments, the cover plate 20 is detachably covered above the closed-circuit sampler body, and the covering and opening manner of the cover plate 20 is not limited. In some embodiments, the placement of the vent 10 in a central location on the cover plate 20 facilitates the positioning of the vent 10 on the cover plate 20 and improves the venting effect of the vent 10 to some extent. In other embodiments, the vent 10 is positioned off-center of the cover, which improves the flexibility of positioning the vent 10. In some embodiments, the cover plate 20 is provided with a through hole 21, and the vent 10 is at least partially inserted through and secured to the through hole 21. Alternatively, the air vent device 10 may be inserted through and fixed to the through hole 21 from the bottom surface of the cover plate 20, the air vent device 10 may be inserted through and fixed to the through hole 21 from the top surface of the cover plate 20, or each component of the air vent device 10 may be inserted through and fixed to the through hole 21 from the bottom surface and the top surface of the cover plate 20, respectively. Alternatively, the mode of fixing the ventilation device 10 to the through hole 21 may be bolt fixing, which is more flexible and the ventilation device 10 is more convenient to assemble and disassemble; or may be welded or adhesively secured, which is preferable for securing the vent assembly 10.

Fig. 2 shows a schematic cross-sectional view of the closed-circuit sampler 1 shown in fig. 1. The vent apparatus 10 of the embodiment of the present application includes a vent 100 and a connector 200. In some embodiments, the inside of the vent 100 is provided with a water collecting cavity 140 for containing rainwater or external liquid entering the vent 100 and preventing the rainwater or external liquid from directly contacting aviation oil inside the closed-circuit sampler 1 after entering the vent 100.

In the related art, rainwater or external liquid easily enters the closed-circuit sampler through the vent hole communicated between the vent piece and the closed-circuit sampler after entering the vent piece, so that aviation oil pollution is caused. The present application adopts the solution that the vent 100 is provided with the water collecting cavity 140, even if a small amount of rain water or external liquid enters the vent 100, the rain water or external liquid can be temporarily stored in the water collecting cavity 140, so as to prevent the rain water or external liquid from entering the closed circuit sampler body.

In some embodiments, the vent 100 includes a bottom wall 110 and a side wall 120 connected to a peripheral side of the bottom wall 110, the bottom wall 110 and the side wall 120 enclosing a water collection chamber 140. Optionally, the side walls 120 enclose a water collection chamber 140 of circular cross-section or a water collection chamber 140 of other cross-sectional shape.

Referring to fig. 2, in some embodiments, the outer wall of the vent 100 is provided with a first vent hole 150 therethrough, the first vent hole 150 being in communication with the water collection chamber 140. The first vent hole 150 communicates the water collecting chamber 140 with the external atmosphere, meets the ventilation requirement of the closed circuit sampler 1, and can timely discharge rainwater or external liquid in the water collecting chamber 140. Optionally, the first vent hole 150 may be provided in the side wall 120 to facilitate viewing of the first vent hole 150; the first vent 150 may also be provided in the bottom wall 110 to facilitate drainage. In some embodiments, the first vent hole is disposed at the junction of the side wall 120 and the bottom wall 110, which facilitates the observation of the first vent hole 150 and also facilitates the drainage of rainwater or external liquid inside the water collection chamber 140. Specifically, the first air vent hole 150 includes a first air vent end 151 and a second air vent end 152, the first air vent end 151 is communicated with the water collecting chamber 140, and the second air vent end 152 is communicated with the outside of the air vent 100. The water collecting chamber 140 includes a bottom surface disposed on the bottom wall 110 and side surfaces disposed on the side walls 120, and side surfaces connected to the circumferential side of the bottom surface. In some embodiments, the bottom surface is disposed obliquely toward the first vent hole 150 relative to the axis of the vent 100, and the bottom surface near the axis of the vent 100 is higher than the bottom surface near the first vent hole 150, so that the liquid inside the water collecting chamber 140 moves toward the first vent hole 150 under the action of gravity, thereby accelerating the liquid to be discharged out of the water collecting chamber 140, and reducing the possibility of liquid accumulation in the water collecting chamber 140 to a certain extent. In some embodiments, the number of the first vent holes 150 is plural, and the plural first vent holes 150 are provided at intervals along the circumference of the vent 100. The plurality of first vent holes 150 help to improve the venting and drainage performance of the vent 100. Further, the plurality of first vent holes 150 may be uniformly arranged along the circumferential direction of the vent 100. On the basis of the above embodiment, the bottom surface of the water collecting chamber 140 is inclined from the central axis of the air vent 100 toward the side surface of the water collecting chamber 140, and the bottom surface has an umbrella-shaped section and is matched with the plurality of first air vents 150, so as to further accelerate the liquid discharge inside the water collecting chamber 140.

In some embodiments, the connector 200 is connected to the breather piece 100, and the connector 200 is provided with a second breather hole 210 communicating with the water collection chamber 140. The closed-circuit sampler 1 realizes the ventilation with the outside through the first ventilation hole 150 and the second ventilation hole 210, and meets the ventilation requirement. Specifically, the second vent hole 210 penetrates the connector 200, and may extend from one end of the connector 200 to the other end of the connector 200.

In some embodiments, the vent apparatus 10 includes a sealing member 300, wherein the sealing member 300 is sleeved outside the connector 200 from the connection position of the vent 100 and the connector 200. It will be appreciated that the seal 300 prevents rain water or external liquids outside the vent device 10 from entering the interior of the closed circuit sampler 1 through gaps between the components of the vent device 10 or between the vent device 10 and the cover plate 20, so that the vent device 10 meets the requirements for water protection while meeting the requirements for venting. Further, the connection member 200 is connected to the cover plate 20, the second vent hole 210 is communicated with the inside of the closed circuit sampler body, and the sealing member 300 is sleeved outside the connection member 200 and located between the cover plate 20 and the vent member 100 to achieve a better sealing effect. Alternatively, the sealing member 300 may be a sealing gasket, a sealing rubber ring, a sealing glue or other sealing forms. In some embodiments, the connection element 200 includes a position-limiting portion 230, and the position-limiting portion 230 abuts against the cover plate 20 to prevent the connection element 200 from being displaced in a vertical direction relative to the cover plate 20 and facilitate the connection element 200 to be detached. In the above embodiment, as shown in fig. 2, the connection member 200 is inserted through the bottom surface of the cover plate 20 and fixed to the through hole 21, and the stopper 230 abuts against the bottom surface of the cover plate 20.

In some embodiments, the junction of the side wall 120 and the bottom wall 110 includes a transition portion 130, the transition portion 130 is disposed at an angle relative to the bottom wall 110, and the first vent 150 is disposed at the transition portion 130. It will be appreciated that the transition 130 is a portion of the sidewall 120 that has a thickness or volume at the junction with the bottom wall 110. The transition 130 helps to reduce the sharpness of the junction of the side wall 120 and the bottom wall 110, and improves the utility and aesthetics of the vent apparatus 10. Alternatively, the transition portion 130 may be a chamfer or a fillet. In some embodiments, the second vent end 152 extends to a surface of the transition portion 130 to help prevent clogging of the first vent aperture 150. In some embodiments, the first vent 150 is perpendicular to the surface of the transition 130. In other embodiments, the first vent 150 is oblique to the surface of the transition portion 130. The first vent hole 150 is perpendicular to or inclined from the surface of the transition portion 130, so that rainwater or external liquid can be automatically discharged under the action of gravity, the possibility of water accumulation in the water collecting cavity 140 is reduced, and rainwater or external liquid is prevented from entering the closed-circuit sampler body. In some embodiments, the transition 130 is disposed around a peripheral side of the breather 100. In other embodiments, the transition portion 130 is disposed only at the location of the first vent hole 150.

In some embodiments, the transition portion 130 extends from the bottom end of the sidewall 120 to the axial direction near the bottom wall 110 and the vent 100, i.e., the transition portion 130 is disposed obliquely to the axial direction of the vent 100. Specifically, an end of the transition portion 130 proximate the side wall 120 is disposed further from the axis of the breather 100 than an end of the transition portion 130 proximate the bottom wall 110. It will be appreciated that the outer surface of the side wall 120 is vertical in appearance, and the outer surface of the transition portion 130 is sloped relative to the side wall 120. The obliquely arranged transition portion 130 can increase the cross-sectional area of the first vent hole 150 to improve the visibility of the first vent hole 150, facilitate the user to observe whether the first vent hole 150 is blocked from the outside of the closed circuit sampler 1, and facilitate cleaning. Preferably, the transition portion 130 is inclined at an angle of 45 °, and the visibility of the first vent hole 150 is maximized.

With continued reference to FIG. 2, in some embodiments, the bottom wall 110 is provided with mounting holes 111, and the mounting holes 111 are in communication with the water collection chamber 140. The connecting member 200 is at least partially inserted into and fixed to the mounting hole 111, so that the connection between the connecting member 200 and the ventilation member 100 is more stable. Further, the connection member 200 includes a mounting portion 220, and the mounting portion 220 is inserted through and fixed to the mounting hole 111. In some embodiments, the mounting portion 220 and the mounting hole 111 are both provided with threads, and the mounting portion 220 is fixed in the mounting hole 111 through the threads, so that the fixing effect is good, the dismounting is convenient, and the connection flexibility is high. In some embodiments, the mounting portion 220 is pinned to the mounting hole 111. In other embodiments, the mounting portion 220 is welded, bonded, or otherwise connected to the mounting hole 111.

In some embodiments, the vent 100 includes a first fixing portion 160, and the first fixing portion 160 is formed to extend from the bottom wall 110 to a direction close to the water collecting chamber 140 along an axial direction of the vent 100. Further, the first fixing portion 160 is provided with a first engaging hole 161 communicating with the mounting hole 111, and the mounting portion 220 is inserted through and fixed to the mounting hole 111 and the first engaging hole 161. It can be understood that the first fixing portion 160 is located on the same side of the bottom wall 110 as the side wall 120. On one hand, the mounting portion 220 is engaged with the first engaging hole 161, so as to increase the contact area between the connecting member 200 and the ventilation member 100, and improve the stability of the connection therebetween. On the other hand, the first fixing portion 160 extends upward for a certain distance than the bottom wall 110, even if the water collecting cavity 140 stores a certain amount of rainwater or external liquid, as long as it is ensured that the water level of the rainwater or the external liquid inside the water collecting cavity is lower than the top of the first fixing portion 160, the rainwater or the external liquid cannot enter the closed-circuit sampler body, and the aviation oil is prevented from being polluted by the rainwater or the external liquid to a great extent. In some embodiments, the end of the first fixing portion 160 extending to the water collecting chamber 140 is disposed far away from the bottom wall 110 than the first vent hole 150, and the rainwater or the external liquid inside the water collecting chamber 140 is discharged through the first vent hole 150 before the liquid level is higher than the end of the first fixing portion 160, so as to further prevent the rainwater or the external liquid from entering the closed-circuit sampler body. Specifically, as shown in fig. 2, one end of the first fixing portion 160 extending to the water collecting cavity 140 is higher than the first ventilation end 151. Alternatively, the first fixing portion 160 and the bottom wall 110 may be integrally formed, and the first fitting hole 161 and the mounting hole 111 may be coaxially disposed and have the same diameter, which is convenient for processing.

In addition to the above embodiments, the air vent 100 includes the second fixing portion 170, and the second fixing portion 170 is formed to extend from the bottom wall 110 in a direction away from the water collection chamber 140 along the axial direction of the air vent 100. Further, the second fixing portion 170 is provided with a second engagement hole 171 communicating with the mounting hole 111, and the mounting portion 220 is inserted through and fixed to the second engagement hole 171, the mounting hole 111, and the first engagement hole 161. It is understood that the second fixing portion 170 is located on a different side of the bottom wall 110 from the side wall 120. The second fixing portion 170 helps to further improve the connection stability of the connector 200 with the vent 100. In some embodiments, the second fixing portion 170 is disposed through and fixed to the second ventilation hole 210, i.e., the mounting portion 220 is disposed outside the second fixing portion 170. Further, a sealing structure may be provided at a position where the end of the mounting portion 220 abuts against the bottom wall 110 of the vent 100, preventing rainwater or external liquid from entering the closed circuit sampler body through a gap between the mounting portion 220 and the bottom wall 110. Alternatively, the second fixing portion 170 and the bottom wall 110 may be integrally formed, and the second fitting hole 171 and the mounting hole 111 may be coaxially disposed and have the same diameter, which is convenient for processing.

Further, the first fixing portion 160, the bottom wall 110 and the second fixing portion 170 may be integrally formed, and the second fixing portion 170, the first fixing portion 160 and the mounting hole 111 are coaxially disposed in the axial direction of the ventilation member 100 and have the same hole diameter, so as to ensure the tightness degree of the connection between the mounting portion 220 and the ventilation member 100. In some embodiments, the mounting portion 220, the second engaging hole 171, the mounting hole 111 and the first engaging hole 161 are provided with threads, and the mounting portion 220 is fixed to the second engaging hole 171, the mounting hole 111 and the first engaging hole 161 through the threads. In some embodiments, the mounting portion 220 is pinned with the second mating hole 171, the mounting hole 111, and the first mating hole 161. In other embodiments, the mounting portion 220 is connected to the second matching hole 171, the mounting hole 111 and the first matching hole 161 by welding, bonding or other methods, and the connection is reliable. In some embodiments, the sealing member 300 is sleeved outside the mounting portion 220 and located between the second fixing portion 170 and the cover plate 20.

In some embodiments, the aerator device 10 includes a top cap 400, and the top of the aerator 100 defines an opening 180 that communicates with the water collection chamber 140. In some embodiments, the top cover 400 is detachably disposed at the opening portion 180, so that a user can conveniently detach the top cover 400 to observe the water accumulation condition inside the vent member 100 or the blockage condition of the first vent hole 150, and clean the top cover in time, so as to prevent rainwater or external liquid from entering the closed-circuit sampler body through the second vent hole 210 due to the blockage of the first vent hole 150. Specifically, the top cover 400 is detachably provided on the top of the sidewall 120. Optionally, the cap 400 is threadably or otherwise connected to the vent 100. In some embodiments, as shown in fig. 1, the outer surface of the top cap 400 is provided with anti-slip lines to increase the friction of the outer surface to facilitate the user to assemble and disassemble the top cap 400.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (10)

1. An airway device, comprising:

the water collecting device comprises an air communicating piece, a water collecting cavity is arranged in the air communicating piece, a first through air hole is formed in the outer wall of the air communicating piece, and the first through air hole is communicated with the water collecting cavity;

and the connecting piece is connected with the ventilating piece and is provided with a second ventilating hole communicated with the water collecting cavity.

2. The aeration device of claim 1, wherein the aeration member comprises a bottom wall and a side wall connected to the periphery of the bottom wall, the bottom wall and the side wall enclose the water collection chamber, and the first aeration hole is formed in the side wall.

3. The vent device of claim 2, wherein said first vent hole is located at the junction of said side wall and said bottom wall;

the joint of the side wall and the bottom wall comprises a transition part, the transition part is obliquely arranged relative to the bottom wall, and the first vent hole is arranged in the transition part;

the first vent hole is perpendicular or oblique to the surface of the transition portion.

4. The vent device according to claim 3, wherein said transition portion is disposed around a peripheral side of said vent member, said transition portion extending from a bottom end of said side wall in a direction toward an axis of said vent member and said bottom wall;

one end of the transition portion, which is close to the side wall, is far away from the axis of the ventilation piece compared with one end of the transition portion, which is close to the bottom wall.

5. The breather device of claim 3, wherein the first breather hole includes a first breather end in communication with the water collection chamber and a second breather end in communication with an exterior of the breather piece;

the second venting end extends to a surface of the transition portion.

6. The aeration device of any one of claims 2 to 5, wherein the bottom wall is provided with mounting holes, the mounting holes are communicated with the water collecting cavity, and the connecting piece is at least partially penetrated and fixed in the mounting holes; the connecting piece includes the installation department, the installation department wears to establish and is fixed in the mounting hole.

7. The aerator of claim 6, wherein the aerator further comprises a first fixing portion extending from the bottom wall toward the water collecting chamber along an axial direction of the aerator, the first fixing portion having a first fitting hole communicating with the mounting hole, the mounting portion being inserted through and fixed to the mounting hole and the first fitting hole;

one end of the first fixing portion extending to the water collecting cavity is far away from the bottom wall compared with the first vent hole.

8. The aerator of claim 7, wherein the aerator further comprises a second fixing portion extending from the bottom wall in a direction away from the water collecting chamber along an axial direction of the aerator, the second fixing portion having a second fitting hole communicating with the mounting hole, the mounting portion being inserted through and fixed to the second fitting hole, the mounting hole, and the first fitting hole;

the second fixing portion, the first fixing portion and the mounting hole are coaxially arranged in the axial direction of the ventilation piece.

9. The vent device according to any one of claims 1 to 5, further comprising a sealing member which is sleeved outside the connecting member from a connection point of the vent member and the connecting member; and/or

The number of the first vent holes is multiple, and the first vent holes are arranged at intervals along the circumferential direction of the ventilation piece; and/or

The bottom surface of the water collecting cavity is obliquely arranged in a direction close to the first vent hole relative to the axis of the vent piece; and/or

The ventilating device further comprises a top cover, an opening part communicated with the water collecting cavity is formed in the top of the ventilating piece, and the top cover is detachably arranged on the opening part.

10. A closed circuit sampler comprising a closed circuit sampler body, a cover plate that can be covered over the closed circuit sampler body, and an aeration device according to any one of claims 1-9; the connecting piece is connected with the cover plate, and the second vent hole is communicated with the inside of the closed-circuit sampler body;

the cover plate is provided with a through hole, and the connecting piece is at least partially penetrated and fixed in the through hole; and/or

The connecting piece comprises a limiting part which is abutted to the cover plate.

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