CN218112933U - Waterproof plug only used for air single circulation and used for floating body - Google Patents

Abstract

The utility model discloses a body is with waterproof stopper that only supplies air unicity circulation relates to body technical field on water. The utility model comprises a plug body and a plug cap arranged on the upper part of the plug body for use, or a plug body for single use; the plug body comprises a connecting plug connected with the air blowing hole in an air-tight manner and a plug cap arranged on the connecting plug, at least one air hole communicated with a channel in the connecting plug is formed in the plug cap, and a breathable waterproof film is selectively arranged in the air hole; a channel for air circulation is arranged between the plug cap and the plug body. The utility model can ensure the exchange between the air inside the floating body and the external ambient air, thereby ensuring that the air pressure inside the floating body is always equal to the ambient air pressure, and avoiding the deformation problem caused by the change of the air pressure inside the floating body in the prior art; on the other hand, the floating body can effectively prevent water from entering the floating body to influence the buoyancy of the floating body, and the structural strength is high.

Description

Waterproof plug only used for air single circulation and used for floating body

Technical Field

The utility model belongs to the technical field of the body on water, especially, relate to a body is with waterproof stopper that only supplies air unicity circulation.

Background

The floating pontoon floating on the water surface is also called as a floating body, is a hollow structure, and is widely applied to the fields of floating bridges, water paradises, water swimming pools, water photovoltaic power stations, deep water culture, docks and the like; at present, the floating bodies are mostly hollow and made of tough plastics, and the four corners of the floating bodies are connected into a whole through connecting lugs and connecting pieces.

The basic function of the float is to provide as much buoyancy as possible, so that the interior of the buoy remains hollow and the buoy itself is sealed, but it is known that objects have the property of expanding with heat and contracting with cold, in particular gases, which have a high coefficient of expansion. The vast majority of water works are arranged outdoors, the temperature difference of winter, summer, day and night causes the air volume inside the floating barrel to change greatly, the surface of the floating barrel bulges outwards when the temperature rises, the temperature falls inwards when the temperature falls, the stability of the platform built by the floating barrel is seriously affected naturally, and the change can greatly reduce the service life of the floating barrel and the whole water works. Because be hollow structure in the body, if adopt totally enclosed, under the effect of inside atmospheric pressure, the inside air can produce the swell or expand when meeting heat, can produce sunken when meeting cold, influences the security of using, consequently generally all need set up the gas pocket on the body, makes the body can keep unanimous with outside atmospheric pressure, avoids producing the deformation and the safety problem that the aforesaid leads to because of atmospheric pressure. Like current application number 201821904472X, the utility model patent of name "flotation pontoon", its adopts the mode that sets up the exhaust hole on the surface of floating body, also has the mode that sets up the exhaust hole that adopts the outside portion that lies in above the waterline in addition, above all inevitablely can appear outside rainwater, the dust invades to the floating body inside through the exhaust hole, lead to producing ponding in the floating body or block up the exhaust hole, influence safety in utilization, consequently to above problem, it has important practical meaning to provide a body with the waterproof plug that only supplies the air unicity to circulate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a body is with waterproof stopper that only supplies air unicity circulation has solved above problem.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model discloses a body is with waterproof stopper that only supplies air unicity circulation, include:

the plug body is hollow, and the upper end of the plug body is sealed by adopting an end face;

and at least one air hole is arranged on the end surface and is communicated with the hollow part of the plug body.

Further, the outer surface shape of the plug body comprises smooth, threaded or snap-fit.

Furthermore, the upper surface, the lower surface or the middle of the end surface is provided with a breathable waterproof film.

Further, the breathable waterproof membrane is a polytetrafluoroethylene membrane or a derivative membrane thereof.

Furthermore, a boss is arranged on the end face, and the air hole penetrates through the boss and is communicated with the hollow part of the plug body.

Further, the outer ring of the boss is provided with a scraping edge.

Furthermore, a recess is arranged on the end face, and the air hole penetrates through the recess and is communicated with the hollow part of the plug body.

Furthermore, a drainage notch is arranged on the scraping edge.

Further, the upper surface of the boss is provided with a first reinforcing rib and/or a second reinforcing rib.

Further, the first reinforcing rib and/or the second reinforcing rib are/is a raised reinforcing rib.

Further, the first reinforcing rib and/or the second reinforcing rib are/is a concave reinforcing rib.

A water-proof plug for floating body only providing single air circulation also includes a plug cap.

Furthermore, be provided with first latch on the inside wall of stopper cap, scrape and be provided with on the limit lateral wall with first latch joint complex second latch.

Furthermore, a first thread is arranged on the inner side wall of the plug cap; and a second thread matched with the first thread is arranged on the outer side wall of the scraping edge.

Further, the upper surface of the pack includes a plurality of depressions or protrusions.

Further, the outer sidewall of the pack cap includes a third bead.

Furthermore, the bottom surface in the plug cap is provided with supporting legs or a fourth reinforcing rib.

Furthermore, the lateral parts of the supporting legs are provided with ventilation notches.

Furthermore, the fourth reinforcing rib is a convex reinforcing rib or a concave reinforcing rib which corresponds to the end face and can avoid air holes from being pressed and bonded.

A float, comprising:

the floating body and the waterproof plug for the floating body are only used for air to circulate in a single way;

the interior of the floating body is hollow;

the outer wall of the floating body is provided with an air blowing hole communicated with the hollow inside;

and the inner side wall of the air blowing hole and the outer side wall of the plug body are of mutually matched airtight structures.

Further, the leakproofness structure includes threaded connection structure, grafting interference fit structure, joint structure, welded structure, bonding structure.

Furthermore, a diversion trench is further arranged on the surface of the floating body where the air blowing hole is located.

Compared with the prior art, the utility model following beneficial effect including:

(1) The technical scheme provides a floating body which is composed of a plug body and a plug cap matched with the plug body and is used for a waterproof plug structure which is only used for single circulation, or a structure which is used by the plug body alone, wherein the plug body is provided with an air hole which is only used for air circulation and can block water and impurities from invading, a breathable waterproof film is arranged in the air hole, and a structure for preventing adhesion and adsorption is arranged between the surface of the air hole of the plug body and the plug cap, so that the air hole blockage caused by air adsorption is avoided, and the use is efficient and safe; the structure can ensure that the air in the floating body is exchanged with the external ambient air on one hand, thereby ensuring that the air pressure in the floating body is always equal to the ambient air pressure and avoiding the deformation problem caused by the change of the air pressure in the floating body in the prior art; on the other hand, water can be effectively prevented from entering the floating body to influence the buoyancy of the floating body;

(2) In the technical scheme, a channel for air circulation is arranged between the inner peripheral side wall of the plug cover and the inner peripheral side wall of the plug body, so that air can efficiently circulate;

(3) The outer surface and the periphery side of the plug cover in the technical scheme are provided with the reinforcing structures, and the structural strength is high.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a plug body structure of a waterproof plug for a floating body, which only allows air to circulate in a single way according to embodiment 1 of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural view of a plug body of a waterproof plug for a floating body, which is only used for single ventilation of air, according to embodiment 2 of the present invention;

fig. 4 is a schematic structural diagram of a plug body of a waterproof plug for a floating body according to embodiment 3 of the present invention, in which only air circulates in a single direction;

fig. 5 is a schematic view of a plug body structure of a waterproof plug for a floating body according to embodiment 4 of the present invention, in which only air circulates in a single direction;

fig. 6 is a schematic structural view of a plug cap of a waterproof plug for a floating body, which only allows air to circulate in a single way according to embodiment 5 of the present invention;

fig. 7 is a schematic structural view of a floating body according to embodiment 5 of the present invention after a plug body and a plug cap of a waterproof plug for single air circulation are combined;

fig. 8 is a schematic structural view of a plug cap of a waterproof plug for a floating body, which is only used for single ventilation of air, according to an embodiment 6 of the present invention;

fig. 9 is a schematic sectional view of a waterproof plug according to embodiment 7 of the present invention;

FIG. 10 is a bottom view of the structure of FIG. 9;

fig. 11 is a schematic sectional view of a waterproof plug according to embodiment 8 of the present invention;

FIG. 12 is a bottom view of the structure of FIG. 11;

fig. 13 is a schematic structural view of a floating body according to the present invention, in which a waterproof plug for allowing only a single circulation of air is installed in the floating body;

in the drawings, the reference numbers indicate the following list of parts:

1-plug body, 101-drainage notch, 102-second latch, 103-boss, 1031-first reinforcing rib, 1032-second reinforcing rib, 1033-air hole, 2-plug cap, 201-third reinforcing rib, 202-sunken reinforcing rib structure, 204-first latch, 205-adhesive layer, 206-welding strip, 207-supporting leg, 2071-ventilation notch, 3-gap channel, 4-floating body and 401-diversion trench.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "inner", "upper", "outer", "lower", "upper", "intermediate", "end", "inner side" and the like indicate orientation or positional relationship, merely for convenience of description and simplicity of description, and do not indicate or imply that the indicated component or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Specific example 1:

as shown in fig. 1-2 and fig. 13, a waterproof plug for a floating body according to an embodiment of the present invention, which is only used for single circulation of air, is installed in an air blowing hole shown in a position of a locally enlarged position E on the surface of the floating body 4 in fig. 13, and is engaged with a diversion trench 401; FIG. 1 isbase:Sub>A perspective view of the present embodiment, and FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1; in this technical scheme, waterproof stopper includes cock body 1, and cock body 1 is hollow structure (as shown in fig. 2), and the upper end is closed by the terminal surface, and cock body 1 periphery side is provided with the screw thread, also is provided with the screw thread on the gas hole inside wall on 4 surfaces of body, can form closely cooperating with the screw thread of cock body 1 periphery side for waterproof stopper 2 can install in the gas hole, and form closely sealed between the side wall of cock body 1 and gas hole. It should be noted that: the matching mode of the plug body 1 and the air blowing hole is only one embodiment, in other embodiments, the fastening mode of directly inserting the plug body 1 and the air blowing hole in an interference fit mode, clamping, hot melt bonding, gluing or even welding is adopted, the same technical effect is achieved, and the method can be regarded as an equivalent means of the thread mode.

The closed end face of the plug body 1 is provided with an air hole 1033, the air hole 1033 penetrates downwards to the hollow space R of the plug body 1, so that after the waterproof plug is installed on the buoy 1, the inner space of the floating body 4 can be communicated with the ambient environment through the hollow space R and the air hole 1033 of the plug body 1. In this example, the number of the air holes 1033 is 3, and they are arranged in an equilateral triangle. But this is not necessary, and the number of the air holes can be adjusted according to the temperature variation range, the size of the inner volume of the float bowl and other factors, and the arrangement mode can also be changed correspondingly.

Although the influence of water entering the floating body 4 from the air hole 1033 on the buoyancy of the floating body can be effectively reduced by limiting the diameter of the air hole 1033, installing a waterproof plug on the side surface of the floating body, and the like, in view of the fact that water works are generally capital works and the service life is long, in order to further prevent water from entering the floating body 4 from the air hole 1033, a breathable waterproof membrane can be arranged at the outlet of the air hole 1033 leading to the hollow part of the plug body 1. The preferred material of waterproof ventilated membrane is EPTFE (polytetrafluoroethylene) or its derivative, and the mounting mode can adopt ultrasonic welding, or the mode of gluing is installed at the lower surface of the closed end face (for example fig. 2), has compromise simple and convenient and durable demand of technology. The position of the air-permeable waterproof membrane is not limited to the lower surface of the closed end surface, may be the upper surface of the closed end surface, or may be selectively embedded in the end surface as long as communication between the air holes 1033 and the air inside the floating body is not affected and water-tight sealing between the two is achieved.

In this embodiment, a scraping edge is further provided around the closed end face. The diameter of scraping the limit is greater than the diameter of the gas blow hole on the body 4 of body on the one hand to further prevent impurity such as rainwater from getting into the inside of flotation pontoon 1 between cock body 1 and the gas blow hole, on the other hand, scrape the limit and also easy to assemble the cock cap. Preferably, the scraping edge is provided with a drainage notch 101, when the waterproof plug is installed on the floating body 4, the drainage notch 101 is aligned with the diversion trench 401 on the floating body 4, on one hand, the drainage notch 101 plays a positioning role, namely, when the drainage notch 101 is aligned with the diversion trench 401, the installation is in place; on the other hand, if water or impurities on the closed end surface are accumulated, the water or the impurities can be discharged along the drainage notch 101 and the diversion trench 401.

Specific example 2:

referring now to fig. 3, for convenience of explanation, the same reference numerals will be used for parts corresponding to those of embodiment 1. As shown in fig. 3, the difference from the embodiment is that a hexagonal boss 103 is provided on the closed end surface in this example, so that it is convenient to use a fastening tool such as a wrench which is relatively commonly used in the market to install and fasten the plug body 1, and the boss 103 is preferably higher than the scraping edge for further facilitating the wrench application. The gas holes 1033 are provided on the boss 103 and penetrate down to the hollow space R of the plug body 1.

Preferably, a plurality of ribs are disposed around the air holes 1033 to increase the stress on the surface of the boss 103 in the vertical direction. In this embodiment, the reinforcing ribs are a first protruding reinforcing rib 1031 arranged around the air holes 1033 and a second protruding reinforcing rib 1032 with a circular dot located in the middle of the three air holes 1033.

Specific example 3:

referring to fig. 4, the difference between the present embodiment and embodiment 2 is that a variation of embodiment 2 is provided, that is, the first reinforcing ribs 1031 are not necessarily a convex structure, and may alternatively be a concave structure. It can be understood that, in this example, the first strengthening ribs 1031 and the second strengthening ribs 1032 may also be arranged at intervals of concave and convex, and the number and the shape of the first strengthening ribs 1031 and the second strengthening ribs 1032 should not constitute the limitation of the present invention, and both can be adjusted according to actual needs.

Specific example 4:

fig. 5 shows another variation of this embodiment 2, in which the boss 103 is replaced by an internal hexagonal recess, which is convenient for matching with a commercially available internal hexagonal wrench. In the embodiment of the present disclosure, a first stiffener 1031 and a second stiffener 1032 may also be provided, and the arrangement manner may be the same as that in fig. 3, and is not described again.

It can be understood that: the boss 103 and the inner hexagonal recess are only arranged to match two common wrenches on the market, the wrenches on the market are in various shapes, and the shapes of the boss and the recess can be adjusted as required.

Specific example 5:

embodiment 5 of the present invention will be described with reference to fig. 6 to 7. Example 3 on the basis of examples 1-4, a plug cap 2 is provided which can be mounted on a scraping edge. One embodiment of the closure cap 2 is shown in figure 6. The inner side wall of the pack 2 is provided with a first latch 204 which is able to engage with a second latch 102 (see figures 3, 4, 5, 6, 7) on the scraping edge. So that the plugging cap 2 can be conveniently installed on the scraping edge by pressing. In addition, the upper surface of the plug cap 2 is provided with a plurality of sunken reinforcing rib structures 202 for improving the stress of the upper surface of the plug cap 2; a plurality of third reinforcing ribs 201 are arranged outside the side wall for improving the structural strength of the side wall.

Fig. 7 is a cross-sectional view taken along line B-B in fig. 3, with the closure cap 2 installed in the embodiment of fig. 3. It can be seen that in the mounted state, the plug cap 2 is jacked up by the first and second ribs 1031, 1032, so that the gap channel 3 exists between the lower surface of the plug cap 2 and the upper surface of the boss 104 (in the figure, the first and second ribs 1031, 1032 are intentionally reduced in size in order to highlight the connectivity of the gap channel 3). The ambient air can exchange with the air in the floating body through the gap channel 3, the air hole 1033 and the hollow space R of the plug body 1, so that the air pressure in the floating body 1 can be always kept consistent with the ambient air pressure. It is easy to understand that: when the plug cap 2 is applied to the embodiment shown in fig. 4, the recessed stiffener structure 202 and the third stiffener 201 can also enable the gap channel 3 to exist between the lower surface of the plug cap 2 and the upper surface of the boss 104, and details are not repeated.

Since the boss 104 is higher than the scraping edge in this example, the upper surface of the plug cap 2 presents a slope with a height in the middle and gradually lower towards the periphery, and the design can prevent water accumulation. Because the plug cap 2 can play a good waterproof effect, under the condition that the plug cap 2 is additionally arranged, the breathable waterproof film can not be arranged under most conditions.

Specific example 6:

figure 8 shows another embodiment of the stopper cap. Compared with the embodiment of fig. 6, the difference is that the support leg 207 is provided on the inner surface of the pack 2, and the vent gap 2071 is provided on the support leg 244. The stopper cap 2 of fig. 8 is particularly suitable for the embodiments shown in fig. 1, 5: in the installed state, the supporting leg 207 contacts the closed end surface to provide support for the plug cap 2, and an air hole is formed between the ventilation gap 2071 and the closed end surface, which functions like the aforementioned gap 3 for air exchange.

It will be appreciated that the manner in which the pack 2 is secured to the scraping edge is not limited to a snap fit in this example. The same effect can also be achieved by providing matching threads on the outer surface of the scraping edge and the inner surface of the plug cap 24. In this embodiment, the recessed bead structures 202 and the third bead 201 also facilitate the plugging cap 2 to be screwed and screwed by hand or using a tool, so that the rapid disassembly and assembly can be realized. In addition, the same effect as that of the embodiment of fig. 5 can be obtained by changing the concave rib structure 202 to be convex and the third rib 201 to be concave.

Specific example 7:

the difference with respect to the specific embodiment 5 is that, as shown in fig. 9-10, the plug cap 2 is specifically of a sleeve structure, the plug cap 2 does not have the first latch 204, the side portion of the plug body 1 is not provided with the second latch 102, the plug cap 2 and the plug body 1 are in clearance fit and are connected by using an adhesive layer 205 locally, the adhesive layer 205 is disposed at the position of the non-drainage notch 101, in this specific embodiment, two adhesive layers 205 with a one-eighth circumference length are specifically used for connection, and the adhesive layer 205 specifically uses waterproof connecting glue.

Specific example 8:

as shown in fig. 11 to 12, the difference of the present embodiment with respect to embodiment 5 is that, the plug cap 2 is specifically a sleeve structure, the plug cap 2 does not have the first latch 204, the side portion of the plug body 1 is not provided with the second latch 102, the plug cap 2 and the plug body 1 are connected by clearance fit and the bottom portion is provided with a local welding strip 206, the welding strip 206 is disposed at the position of the non-drainage notch 101, and in the present embodiment, two eighth-circle-length segments of the welding strip 206 are specifically used for connection;

as another embodiment, the position of the adhesive layer 205 in embodiment 5 is replaced by a welding bar 206 for welding, which also belongs to a manner of an embodiment.

Specific example 9:

the difference between this embodiment and embodiments 1-8 is that the plug 1 is welded to the blowing hole to achieve airtight connection, and the plug 1 is made of plastic or metal.

Specific example 10:

the difference between this embodiment and embodiments 1-8 is that the plug body 1 is bonded to the blowing hole to achieve airtight connection, and the plug body 1 is made of plastic or rubber.

The utility model discloses a ventilative waterproof stopper to and the body of having installed ventilative waterproof stopper additional, can guarantee the inside air of flotation pontoon on the one hand and realize exchanging with outside ambient air, thereby guarantee that the inside atmospheric pressure of flotation pontoon equals ambient air pressure all the time, avoided among the prior art deformation problem that the inside atmospheric pressure of body changes and leads to. On the other hand, water can be effectively prevented from entering the inside of the buoy to influence the buoyancy of the buoy, so that the method has high industrial application value.

The preferred embodiments of the present invention disclosed above are intended to aid in the description of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (22)

1. A waterproof plug for a floating body, which is only used for air to circulate in a single way, is characterized by comprising:

the plug body (1), the plug body (1) is hollow, and the upper end of the plug body (1) is closed by adopting an end face;

and at least one air hole (1033) is formed in the end face of the air hole (1033), and the air hole (1033) is communicated with the hollow part of the plug body (1).

2. The waterproof plug for a floating body, which is only used for air uniflow according to claim 1, wherein the shape of the outer surface of the plug body comprises a smooth surface, a thread or a buckle.

3. The waterproof plug for a floating body, through which air can circulate only in a single direction, according to claim 1, wherein a breathable waterproof film is provided on the upper surface, the lower surface or the middle of the end surface.

4. The waterproof plug for a floating body, through which only air circulates in a single direction of claim 3, wherein the air-permeable waterproof membrane is a polytetrafluoroethylene membrane or a derivative membrane thereof.

5. A watertight plug for a floating body, in which only air circulates unitarily, according to claim 1, characterized in that a boss (103) is provided on the end surface, and the air hole (1033) is communicated with the hollow portion of the plug body (1) by penetrating the boss (103).

6. A watertight plug for a float, which allows only a single circulation of air, according to claim 5, characterized in that the outer ring of the boss (103) is provided with a scraping edge.

7. The waterproof plug for the floating body, through which only air circulates, according to claim 1, characterized in that the end surface is provided with a recess, and the air hole (1033) is communicated with the hollow part of the plug body (1) through the recess.

8. The waterproof plug for a floating body, which is only used for single air circulation, according to claim 6, is characterized in that the scraping edge is provided with a drainage notch (101).

9. A watertight plug for a floating body, in which only air circulates in a single way, according to claim 5, characterized in that the upper surface of the boss (103) is provided with a first stiffening rib (1031) and/or a second stiffening rib (1032).

10. The watertight plug for a floating body for one-way circulation of air according to claim 9, wherein the first and/or second reinforcement rib (1031, 1032) is a protruding reinforcement rib.

11. The watertight plug for a floating body for one-way circulation of air according to claim 9, characterized in that the first and/or second reinforcement rib (1031, 1032) is a recessed reinforcement rib.

12. A watertight plug for a floating body for one-way circulation of air only, according to claim 6, characterized in that it further comprises a plug cap (2).

13. The waterproof plug for the floating body, which is only used for air single circulation, according to claim 12, is characterized in that the inner side wall of the plug cap (2) is provided with a first latch (204), and the outer side wall of the scraping edge is provided with a second latch (102) which is in snap fit with the first latch (204).

14. The waterproof plug for the floating body for only one-way ventilation of air according to claim 12, characterized in that the inner side wall of the plug cap (2) is provided with a first thread; and a second thread matched with the first thread is arranged on the outer side wall of the scraping edge.

15. A watertight plug for a floating body for one-way circulation of air only, according to claim 12, characterized in that the upper surface of the plug cap (2) comprises recesses or protrusions.

16. A watertight plug for a floating body for one-way circulation of air only, according to claim 12, characterized in that the outer side wall of the plug cap (2) comprises third reinforcement ribs (201).

17. The waterproof plug for the floating body, which is only used for air single circulation, according to claim 12, is characterized in that the inner bottom surface of the plug cap (2) is provided with a supporting leg (207) or a fourth reinforcing rib.

18. The waterproof plug for the floating body for only one-way ventilation of air as claimed in claim 17, wherein the side of the supporting leg (207) is provided with a ventilation notch (2071).

19. The waterproof plug for a floating body, in which air circulates only in a single direction of claim 17, wherein the fourth reinforcing rib is a convex reinforcing rib or a concave reinforcing rib corresponding to the end surface so as to prevent the air holes (1033) from being pressed and bonded.

20. A float, comprising:

-a floating body (4) and a watertight plug for a floating body according to any of the preceding claims 1-19, wherein air is only ventilated in a single way;

the interior of the floating body (4) is hollow;

the outer wall of the floating body (4) is provided with an air blowing hole communicated with the hollow inside;

and a mutually matched airtight structure is arranged between the inner side wall of the air blowing hole and the outer side wall of the plug body (1).

21. The float of claim 20, wherein: the sealing structure comprises a threaded connection structure, an inserting interference fit structure, a clamping structure, a welding structure and a bonding structure.

22. The float of claim 20, wherein: and a diversion trench (401) is also arranged on the surface of the floating body (4) where the air blowing hole is positioned.

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