CN217460442U - Liquid level covering structure - Google Patents

Abstract

The application is applicable to the field of liquid level covering, and provides a liquid level covering structure which comprises a shell and an air bag arranged in the shell; the shell is provided with an accommodating cavity for accommodating the air bag and an empty cavity annularly arranged on the peripheral side of the accommodating cavity, and through holes communicated with the outside are formed in the two opposite sides of the accommodating cavity of the shell; the air bag is filled with gas; the liquid level covering structure is provided with a waterline floating on the water surface, and the waterline passes through the vacant cavity. The application provides a liquid level coverage structure can pour into liquid increase weight into automatically to reduce the focus and reduce the windage, improve the liquid level of structure and float stability ability and anti-wind and wave ability, and can pass through the shell shape improves the area coverage rate, is favorable to reducing use quantity and reaches the purpose that reduces use cost.

Description

Liquid level covering structure

Technical Field

The application belongs to the liquid level covering structure field, especially relates to a liquid level covering structure.

Background

The liquid surface covering structure floats on the liquid surface in a large quantity and orderly manner to form covering on the liquid surface. Such as: the water surface of lakes, reservoirs and the like in natural environment is covered, so that sunlight irradiation can be isolated to prevent algae breeding and pollution, and water evaporation loss can be obviously reduced to protect water resources; the natural water contains naturally occurring bromide, chlorine for disinfection is added into a city water supply treatment system, and the chlorine in the water is irradiated by sunlight and reacts to form bromate, wherein the bromate is suspected human carcinogen, and can be isolated from the sunlight so as to prevent chemical reaction of the bromate from occurring when the water covers reservoirs, water storage tanks and the like in the city water supply system. (refer to the technical literature report that sunshades are used in reservoirs from 2008 in los angeles in the United states), the liquid level of a liquid storage tank of a production enterprise in the metallurgical mining industry, the petrochemical industry and the like is covered, evaporation of volatile organic solvents in the tank can be reduced, raw materials are saved, air is purified, the surface of a water area near an airport is covered, and birds can be prevented from entering the reservoir to protect the safety of taking off and landing of airplanes.

The existing liquid level covering structure is a round plastic filler produced by foaming and shrinking polypropylene (PP) serving as a raw material, and is divided into two types of a liquid level covering ball with edges and a liquid level covering ball without edges. The liquid level covering structure is mainly used in environments such as an indoor acid storage tank due to small volume, and the other liquid level covering structure is made of polyethylene HDPE serving as a raw material and is in a hollow spherical shape through hollow blow molding, so that the stability of the liquid level covering structure is weak, and the requirements of wind resistance and wave resistance of large outdoor water surfaces such as reservoirs and lakes are difficult to meet.

SUMMERY OF THE UTILITY MODEL

The object of the present application is to overcome the above-mentioned deficiencies of the prior art and to provide a liquid level covering structure which aims at improving the wind and wave resistance of the liquid level covering structure.

A liquid level covering structure comprising a housing and an air bag disposed within the housing;

the shell is provided with an accommodating cavity for accommodating the air bag and an empty cavity annularly arranged on the peripheral side of the accommodating cavity, and the opposite two sides of the accommodating cavity of the shell are respectively provided with a through hole communicated with the outside so as to automatically inject liquid into the empty cavity in the shell;

the air bags are filled with gas to provide the required buoyancy for the structure;

the liquid level covering structure is provided with a waterline floating on the water surface, and the waterline passes through the vacant cavity.

Optionally, the housing includes a first housing and a second housing that are disposed opposite to each other, the first housing and the second housing are connected in a snap-fit manner, and the through holes are formed in both the first housing and the second housing.

Optionally, the first shell includes a first cover plate, and a first enclosing plate and a first accommodating portion which are provided on the first cover plate, and the first accommodating portion is convexly provided at a central position of the first cover plate;

the second shell comprises a second cover plate, a second enclosing plate arranged on the second cover plate and a second containing part, and the second containing part is convexly arranged at the central position of the second cover plate;

the first enclosing plate and the second enclosing plate are buckled and connected, the first accommodating part and the second accommodating part are enclosed to form the accommodating cavity, and the first cover plate and the second cover plate are enclosed to form the vacant cavity.

Optionally, the first housing is provided with a first baffle at a joint of the first cover plate and the first accommodating portion, the second housing is provided with a second baffle at a joint of the second cover plate and the second accommodating portion, and when the first housing is covered and connected with the second housing, the first baffle and the second baffle abut against each other to separate the accommodating cavity from the empty cavity.

Optionally, when the first shell and the second shell are covered and connected, the first enclosing plate is sleeved on the outer side of the second enclosing plate, a clamping block is arranged on the surface of the first enclosing plate facing the second enclosing plate, and a clamping groove matched with the clamping block is formed in the second enclosing plate.

Optionally, a reinforcing plate is arranged between the second cover plate and the second enclosing plate.

Optionally, the first accommodating part and the second accommodating part are symmetrically arranged along the liquid level covering structure at a center line parallel to the horizontal plane.

Optionally, the housing is in a regular hexagon or a circle in horizontal projection.

Optionally, the air bag can move freely in the accommodating cavity.

Optionally, the height of the air bag is not less than half of the height of the accommodating cavity and not greater than 4/5 of the height of the accommodating cavity.

The application provides a liquid level coverage structure beneficial effect lies in: compared with the prior art, the liquid level coverage structure that this application provided adopts the bilayer design of shell and gasbag, and the shell optional is different from the material of gasbag and improves liquid level coverage structure's life. Through the matching arrangement of the shell with the through hole and the air bag, the liquid level covering structure can be automatically injected with water to increase the weight and spread on the water surface when being thrown into a water body, and the shell sinks relative to the air bag to reduce the gravity center of the structure, so that the wind and wave resistance of the structure is improved. The shell is hollow to form an accommodating cavity and a vacant cavity, so that the weight of the liquid level covering structure can be reduced. The arrangement of the vacant cavity in the horizontal surface ring accommodating cavity can improve the stability of the liquid surface covering structure, improve the area of the water surface covered by the liquid surface covering structure and reduce the material and cost of the liquid surface covering structure.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a liquid level covering structure according to an embodiment of the present disclosure;

FIG. 2 is a disassembled schematic view of the structure of FIG. 1;

FIG. 3 is a cross-sectional view of the structure of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

fig. 5 is a second schematic structural diagram of a liquid level covering structure provided in the embodiment of the present application;

fig. 6 is a schematic structural diagram three of a liquid level covering structure provided in the embodiment of the present application;

fig. 7 is a schematic structural diagram of a liquid level covering structure according to an embodiment of the present application;

fig. 8 is a schematic structural diagram five of a liquid level covering structure provided in the embodiment of the present application;

fig. 9 is a schematic structural diagram six of the liquid level covering structure according to the embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

10. a housing; 101. an accommodating cavity; 102. a vacant cavity; 103. a through hole; 11. a first housing; 111. a first cover plate; 112. a first enclosing plate; 113. a first receptacle portion; 114. a first baffle plate; 12. a second housing; 121. a second cover plate; 122. a second coaming; 123. a second receptacle portion; 124. a second baffle; 125. a clamping block; 126. a reinforcing plate; 20. an air bag.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 9, the liquid level covering structure provided in the present application will now be described.

The existing liquid level covering structure is roughly in a hollow spherical shape, the gravity center of the existing liquid level covering structure is often higher than the water surface, and the covering effect is easily influenced by overturning and shifting under the wind condition. The gravity center of a part of liquid surface covering structures is reduced by adding additional balancing weights so as to improve the stability of the liquid surface covering structures, but the manufacturing cost is increased and the effect is not ideal.

The present embodiment improves the stability of the liquid level covering structure by combining the housing 10 with the air bag 20.

Specifically, the liquid level covering structure includes a housing 10 and an air bag 20 disposed in the housing 10. The airbag 20 is filled with gas. The housing 10 has a receiving chamber 101 for receiving the airbag 20 and a vacant chamber 102 surrounding the receiving chamber 101, and the housing 10 has through holes 103 on opposite sides of the receiving chamber 101 for communicating with the outside. The liquid level covering structure has a waterline floating on the water surface, which passes through the empty chamber 102.

The waterline is a line where the liquid level covering structure intersects with the surface (water surface) of the water body after the liquid level covering structure is thrown into the water body, and represents the draft of the liquid level covering structure. Without doubt, the waterline extends horizontally. The vacant cavity 102 is arranged around the accommodating cavity 101, and the waterline passes through the vacant cavity 102, namely the vacant cavity 102 is arranged around the accommodating cavity 101 on the horizontal plane, and the waterline is located in the height range of the vacant cavity 102.

In the liquid level covering structure provided in the present embodiment, the air bag 20 is filled with a gas, which is generally air, and may be a gas such as nitrogen, helium, or oxygen. As long as the air tightness is less than the density of the water body. The bladder 20 provides buoyancy to the liquid surface covering structure. The housing 10 encloses the air bag 20 therein to provide protection for the air bag 20. Because the shell 10 and the air bag 20 are of two different structures, different materials can be selected for the shell 10 and the air bag 20 according to requirements, for example, the air bag 20 is made of the existing polypropylene or high-density polyethylene material, and the shell 10 is made of plastics, alloys and the like with higher strength, so that the service life of the liquid level covering structure is prolonged.

The housing 10 has a through hole 103. The liquid level covering structure is thrown into the water body, and under the action of gravity, liquid enters the accommodating cavity 101 through the through hole 103, so that the liquid level covering structure is partially submerged into the water body. The weight of the liquid level covering structure is balanced by the buoyancy provided by the bladder 20 so that the liquid level covering structure floats on the water surface.

In this embodiment, the housing 10 has through holes 103 on two opposite sides of the accommodating cavity 101 for communicating with the outside. For the sake of convenience of distinction, the cavity walls on the two opposite sides of the accommodating cavity 101 are named as a first cavity wall and a second cavity wall. First chamber wall and second chamber wall all are equipped with perforating hole 103 for no matter during liquid level covering structure drops into the water with forward placement state (the first chamber wall of holding chamber 101 up) or reverse placement state (the second chamber wall of holding chamber 101 up), liquid homoenergetic effectively gets into holding chamber 101 fast and makes liquid level covering structure part sink into the water.

In this embodiment, the airbag 20 can move freely in the accommodation chamber 101. When the liquid level covering structure is thrown into the water body and liquid enters the accommodating cavity 101 through the through hole 103, the liquid entering the accommodating cavity 101 automatically lifts the air bag 20 until the air bag 20 abuts against the cavity wall of the accommodating cavity 101, which is located above the waterline. The housing 10 moves downward relative to the air bag 20 under the action of gravity to partially sink into the water body, thereby realizing the gravity center sinking of the liquid level covering structure without additionally arranging a balancing weight. In other embodiments, the balloon 20 can be fixed to the first or second cavity wall of the receiving cavity 101. When the air bag 20 is fixed on the first cavity wall of the accommodating cavity 101 and the liquid level covering structure is thrown into the water body in a forward placing state, the air bag 20 is always positioned on the upper side of the liquid level covering structure; when the liquid level covering structure is put into the water body in a reverse placement state, the liquid level covering structure is in an unstable state due to the fact that the air bag 20 is inverted and the center of gravity is high, and the liquid level covering structure is overturned under the action of gravity or external force (wind, wave and the like) to return to a forward placement state. In other words, no matter the air bag 20 is fixed on the first cavity wall or the second cavity wall of the accommodating cavity 101, or the air bag 20 is independent of the housing 10, the liquid level covering structure is placed in the water body, and the liquid level covering structure can be adjusted to the effect that the air bag 20 is located on the upper side of the liquid level covering structure. Under the condition that the shell 10 is designed to be symmetrical up and down, no matter the liquid level covering structures are thrown into the water body in a forward placing state or a reverse placing state, the water heights of the liquid level covering structures are equal. When the batch of liquid level covering structures are placed in the water body, each liquid level covering structure can be adjusted to the same height, and the covering effect on the surface of the water body is guaranteed.

It is understood that the receiving chamber 101 and the empty chamber 102 are enclosed by the housing 10. The housing 10 is a thin-walled structure, and the inner surface thereof is a cavity wall of the accommodating cavity 101 or the vacant cavity 102. The housing 10 is hollow, and the weight of the liquid level covering structure can be reduced. The empty chamber 102 is disposed around the accommodation chamber 101, so that the housing 10 has a large projected area in the horizontal plane direction. In the case of a waterline passing through the vacant cavity 102, the liquid level covering structure has a larger waterline area, i.e., has a larger covered water surface area, thereby reducing the number of liquid level covering structures required for covering a body of water of the same surface area.

In addition, the part enclosed to form the accommodating cavity 101 is a main body part of the shell, and the part enclosed to form the vacant cavity 102 can be regarded as a side wing of the main body part, so that the stability of the liquid level covering structure is improved. It should be noted that the empty cavity 102 may be communicated with the accommodating cavity 101 or may be a sealed cavity. In the case where the empty chamber 102 is a closed chamber, the empty chamber 102 is filled with air to provide buoyancy to the liquid level covering structure.

From the above, the liquid level covering structure provided by the present embodiment adopts the double-layer design of the housing 10 and the airbag 20, and the housing 10 can be made of a material different from that of the airbag 20, so as to improve the service life of the liquid level covering structure. Through the matching arrangement of the shell 10 with the through hole 103 and the air bag 20, the liquid level covering structure can be automatically injected with water to increase the weight and spread on the water surface when being thrown into a water body, and the shell 10 sinks relative to the air bag 20 to reduce the gravity center of the structure, so that the wind and wave resistance of the structure is improved. The housing 10 is hollow to form an accommodating chamber 101 and an empty chamber 102, which can reduce the weight of the liquid level covering structure. The arrangement of the vacant cavity 102 in the horizontal ring accommodating cavity 101 can improve the stability of the liquid surface covering structure, improve the area of the liquid surface covered by the liquid surface covering structure, and reduce the material and cost of the liquid surface covering structure.

In another embodiment of the present application, referring to fig. 3, the height of the airbag 20 is not less than half of the height of the accommodating cavity 101 and not greater than 4/5 of the height of the accommodating cavity 101. The draft of the liquid level covering structure depends on the volume, height and weight of the air bag 20. It will be appreciated that the weight of the liquid level covering structure is equal to the weight of the body of water displaced by the bladder 20. After the liquid level covering structure is thrown into the water body, the air bags 20 float up until abutting against the wall of the accommodating cavity 101, and the air bags 20 are partially immersed into the water body to provide sufficient buoyancy to support the weight of the liquid level covering structure, in other words, the waterline position of the liquid level covering structure depends on the height of the air bags 20 minus the immersion height of the air bags 20. The bladder 20 is set at a height between 1/2-4/5 of the height of the receiving chamber 101 so that the draft of the liquid level covering structure is near the center of the receiving chamber 101. Those skilled in the art can adjust the shape and size of the airbag 20 according to the shape, size and weight of the housing 10, as long as the airbag 20 can float in a state that the water line is between the first cover plate 111 and the second cover plate 121 after being thrown into the water body when the airbag 20 is placed in the housing 10.

The balloon 20 may be spherical, rugby, or other shapes, and is not limited thereto.

In another embodiment of the present application, please refer to fig. 1, fig. 5 or fig. 6, the housing 10 is a regular hexagon in horizontal projection. Under the arrangement, after the liquid level covering structures are thrown into the water body, the liquid level covering structures are tiled on the water surface and are distributed in a honeycomb shape. The side edges of two adjacent liquid surface covering structures are abutted, so that the area coverage rate of the liquid surface covering structures is greatly improved, and the shielding effect of the liquid surface covering structures on the surface of a water body is improved.

In another embodiment of the present application, please refer to fig. 7, fig. 8 or fig. 9, the housing 10 is circular in horizontal projection. The round design can avoid the scratch of the closed angle to the adjacent liquid level covering structure. In other embodiments, the housing 10 may have an elliptical, rectangular or other shape in horizontal projection, and is not limited herein.

In another embodiment of the present application, referring to fig. 2, the housing 10 includes a first housing 11 and a second housing 12 that are oppositely disposed, the first housing 11 and the second housing 12 are connected in a snap-fit manner, and both the first housing 11 and the second housing 12 are provided with through holes 103. Needless to say, the first housing 11 and the second housing 12 enclose an accommodation chamber 101 and an empty chamber 102. In the illustrated configuration, there are two through holes 103, one through hole 103 is opened in the first housing 11, and one through hole 103 is opened in the second housing 12, but those skilled in the art may set the number of the through holes 103 in the first housing 11 or/and the second housing 12 to two, three, four, and the like, or may adjust the position of the through hole 103 in the first housing 11 or the second housing 12 according to actual needs, and the present invention is not limited thereto.

In this embodiment, the housing 10 is composed of a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 are fixedly connected by a snap-fit connection. During assembly, the second housing 12 is placed horizontally, the airbag 20 is placed on the second housing 12, the first housing 11 is covered on the second housing 12, and the first housing 11 and the second housing 12 are fastened and fixed to fix the airbag 20 therein. Compare in shell 10 adoption integrative structural design, the convenience of transport can effectively be improved to this scheme of adoption design. Specifically, the liquid level covering structure is formed by assembling three independent structural components, the three structural components are independently produced in a factory, then are transported to a destination such as a river or a lake to be subjected to water treatment, and are assembled. The first shell 11 and the second shell 12 are thin-walled special-shaped structures, and the occupied space for placing the first shell 11 and the second shell 12 independently is large, and the first shell 11 and the second shell 12 are independent pieces, so that a plurality of first shells 11/second shells 12 can be stacked in a stacking mode, and the accommodating space required by the first shells 11/second shells 12 in batches is reduced. Further, the air bag 20 is built in the housing 10, and the overall size is small compared to the liquid surface covering structure. Under the same condition of overall dimension, adopt this design, can make the required space of big liquid level covering structure transport obviously reduce and be favorable to improving the convenience of transport.

In another embodiment of the present application, referring to fig. 2, the first housing 11 includes a first cover plate 111, and a first surrounding plate 112 and a first accommodating portion 113 disposed on the first cover plate 111, wherein the first accommodating portion 113 is protruded from a central position of the first cover plate 111;

the second casing 12 includes a second cover plate 121, a second enclosing plate 122 and a second accommodating portion 123, where the second enclosing plate 122 and the second accommodating portion 123 are disposed on the second cover plate 121, and the second accommodating portion 123 is protruded from a central position of the second cover plate 121;

the first enclosing plate 112 and the second enclosing plate 122 are buckled and connected, the first accommodating portion 113 and the second accommodating portion 123 enclose to form an accommodating cavity 101, and the first cover plate 111 and the second cover plate 121 enclose to form a vacant cavity 102.

It can be understood that the first receiving portion 113 and the second receiving portion 123 are both opened with the through holes 103.

Referring to fig. 2 and 4, the first housing 11 includes a first cover plate 111, a second surrounding plate 122 and a first accommodating portion 113, the second housing 12 includes a second cover plate 121, a second surrounding plate 122 and a second accommodating portion 123, and the first surrounding plate 112 and the second surrounding plate 122 are fastened to connect the first housing 11 and the second housing 12 into a whole. In this embodiment, the first housing 11 and the second housing 12 are vertically disposed, taking the liquid level covering structure as an example of being horizontally disposed. The first cover plate 111 and the second cover plate 121 extend horizontally, the first enclosing plate 112 is connected with the peripheral edge of the first cover plate 111 and extends downwards, the second enclosing plate 122 is connected with the peripheral edge of the second cover plate 121 and extends upwards, and the first enclosing plate 112 and the second enclosing plate 122 have certain heights so that a gap exists between the first cover plate 111 and the second cover plate 121 under the buckling connection to form the vacant cavity 102. The first accommodating portion 113 protrudes upward from the center of the first enclosing plate 112, and the second accommodating portion 123 protrudes downward from the center of the second enclosing plate 122, so that the accommodating cavity 101 enclosed by the first accommodating portion 113 and the second accommodating portion 123 has a larger volume for accommodating the airbag 20. In conjunction with the foregoing, the movement space of the airbag 20 is defined in the accommodation chamber 101. The person skilled in the art can ensure that the air bag 20 is always located in the middle of the liquid level covering structure by controlling the distance between the first cover plate 111 and the second cover plate 121 (i.e. the height of the empty chamber 102) to avoid the air bag 20 entering the empty chamber 102. In other embodiments, a barrier may be provided between the empty chamber 102 and the receiving chamber 101 to prevent the air bag 20 from entering the empty chamber 102.

In another embodiment of the present application, referring to fig. 3, the first accommodating portion 113 and the second accommodating portion 123 are symmetrically disposed along a center line of the liquid level covering structure parallel to the horizontal plane. This setting makes liquid level covering structure no matter drop into the water with the forward state of placing or the state of placing in reverse, gasbag 20 homoenergetic butt holding chamber 101 the chamber wall and its depth of entry is the same.

The first accommodating portion 113/the second accommodating portion 123 may have a hemispherical shape, a circular truncated cone shape, a conical shape, etc., and in the structure shown in fig. 1 and 7, the first accommodating portion 113/the second accommodating portion 123 has a hemispherical shape; in the structure shown in fig. 5 and 8, the first accommodating portion 113/the second accommodating portion 123 are circular truncated cone-shaped; in the structure shown in fig. 6 and 9, the first accommodating portion 113/the second accommodating portion 123 are substantially cylindrical.

In another embodiment of the present application, referring to fig. 4, the first casing 11 is provided with a first baffle 114 at a joint of the first cover 111 and the first accommodating portion 113, the second casing 12 is provided with a second baffle 124 at a joint of the second cover 121 and the second accommodating portion 123, and when the first casing 11 and the second casing 12 are covered and connected, the first baffle 114 and the second baffle 124 abut to separate the accommodating chamber 101 and the empty chamber 102. The first baffle 114 and the second baffle 124 together can separate the housing chamber 101 from the empty chamber 102 to prevent the air bag 20 from entering the empty chamber 102. In addition, in conjunction with the opening position of the through hole 103, when the liquid enters the housing chamber 101 through the through hole 103, the first baffle plate 114 and the second baffle plate 124 abut against each other to block the liquid from entering the empty chamber 102, so that the empty chamber 102 is kept empty to provide buoyancy to the liquid surface covering structure.

In other embodiments, the first baffle 114 and the second baffle 124 may also be disposed at an interval, or be connected in a snap-fit manner, and the height of the first baffle 114/the second baffle 124 is higher than the waterline to prevent the water in the accommodating chamber 101 from entering the empty chamber 102.

In another embodiment of the present application, referring to fig. 4, when the first shell 11 is connected to the second shell 12 in a covering manner, the first enclosing plate 112 is sleeved on an outer side of the second enclosing plate 122, a clamping block 125 is disposed on a surface of the first enclosing plate 112 facing the second enclosing plate 122, and the second enclosing plate 122 is provided with a clamping groove disposed in cooperation with the clamping block 125.

The first enclosing plate 112 and the second enclosing plate 122 are clamped and fixed through the matching of the clamping block 125 and the clamping groove, and the manufacturing precision requirement of the first enclosing plate 112 and the second enclosing plate 122 can be reduced. Specifically, in the case that the latch 125 and the latch groove are not provided, the first enclosing plate 112 and the second enclosing plate 122 are fixedly connected by interference fit. In the case of providing the latch 125 and the locking groove, a gap may exist between the first enclosing plate 112 and the second enclosing plate 122, as long as the latch 125 is placed into the locking groove to form a locking fixation.

In another embodiment of the present application, referring to fig. 4, a reinforcing plate 126 is disposed between the second cover plate 121 and the second enclosing plate 122. The second enclosing plate 122 is structurally reinforced, so that the deformation of the second enclosing plate 122 generated under the action of external force is reduced, and the connection tightness of the first shell 11 and the second shell 12 is guaranteed. It will be appreciated that the second enclosure plate 122 is located inside the first enclosure plate 112, and the reinforcing plate 126 is provided between the second enclosure plate 122 and the second cover plate 121 to avoid interference with the connection of the first housing 11 and the second housing 12.

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 protection scope of the present application.

Claims (10)

1. A liquid level covering structure comprising a housing and an air bag disposed within said housing; the shell is provided with an accommodating cavity for accommodating the air bag and an empty cavity annularly arranged on the peripheral side of the accommodating cavity, and through holes communicated with the outside are formed in the two opposite sides of the accommodating cavity of the shell; the air bag is filled with gas; the liquid level covering structure is provided with a waterline floating on the water surface, and the waterline passes through the vacant cavity.

2. The liquid surface covering structure according to claim 1, wherein the housing includes a first housing and a second housing that are disposed opposite to each other, the first housing and the second housing are coupled to each other by being fastened to each other, and the through hole is formed in each of the first housing and the second housing.

3. The liquid level covering structure according to claim 2, wherein the first casing includes a first cover plate, and a first enclosing plate and a first accommodating portion provided in the first cover plate, the first accommodating portion being protruded from a central position of the first cover plate; the second shell comprises a second cover plate, a second enclosing plate and a second accommodating part, wherein the second enclosing plate and the second accommodating part are arranged on the second cover plate; the first enclosing plate and the second enclosing plate are buckled and connected, the first accommodating part and the second accommodating part are enclosed to form the accommodating cavity, and the first cover plate and the second cover plate are enclosed to form the vacant cavity.

4. The liquid level covering structure according to claim 3, wherein the first casing is provided with a first baffle at a joint of the first cover plate and the first accommodating portion, the second casing is provided with a second baffle at a joint of the second cover plate and the second accommodating portion, and when the first casing and the second casing are coupled in a covering manner, the first baffle and the second baffle abut to separate the accommodating chamber and the empty chamber.

5. The liquid level covering structure as claimed in claim 3, wherein when the first housing is covered and connected with the second housing, the first enclosing plate is sleeved outside the second enclosing plate, the first enclosing plate is provided with a locking block on a surface facing the second enclosing plate, and the second enclosing plate is provided with a locking groove matched with the locking block.

6. A liquid level covering structure as claimed in claim 5, wherein a reinforcing plate is provided between said second cover plate and said second enclosing plate.

7. The fluid level cover structure as claimed in claim 3, wherein the first and second receiving portions are symmetrically arranged along the fluid level cover structure at a midline parallel to the horizontal plane.

8. A liquid surface covering structure as claimed in any one of claims 1 to 7, wherein said casing has a regular hexagonal or circular shape in horizontal projection.

9. A liquid level covering structure as claimed in any one of claims 1 to 7, wherein said bladder is freely movable within said chamber.

10. The liquid level covering structure according to claim 9, wherein the height of the air bag is not less than half of the height of the housing chamber and not more than 4/5 of the height of the housing chamber.

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