Water absorption prevention device of air pump

Abstract

The utility model relates to a water absorption prevention device of an air pump. The water absorption prevention device comprises a shell and a floater, a first opening is formed in the center of the top of the shell, and a second opening is formed in the position, deviating from the center, of the bottom of the shell. The floater is located in the shell and can move back and forth in the vertical direction along the cavity of the shell, the density of the floater is smaller than that of water, and the floater can float to the top of the shell to seal the first opening. The second opening deviates from the center of the bottom of the shell, so that smooth air intake of the second opening can be guaranteed. When the device enters a wading road surface, water enters the shell from the second opening, the liquid level rises continuously, the floater floats upwards along with the water, when the floater floats upwards to the top in the shell, the floater is tightly attached to the first opening, the first opening is sealed, the first opening is closed, the liquid level is kept below the floater, it is guaranteed that the air pump does not suck liquid, and the air pump is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts, especially relates to an air pump water suction prevention device. BACKGROUND

[0002] The air pump of the air suspension is an important component of the air suspension system, which provides compressed air for the air spring to adjust the suspension height and softness of the vehicle. The air pump of the air suspension needs to suck air from the atmosphere, which can easily lead to water suction of the air pump when the vehicle is driven through deep water, thereby causing damage. SUMMARY

[0003] The main purpose of the utility model is to provide an air pump water suction prevention device, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the utility model is implemented by the following technical solutions:

[0005] An air pump water suction prevention device comprises

[0006] A shell is provided with a first opening in the center of the top and a second opening offset from the center of the bottom;

[0007] A float is located in the shell and can move back and forth in the vertical direction along the cavity of the shell, and the density of the float is less than that of water, so that it can float to the top of the shell to seal the first opening.

[0008] Preferably, the width of the float is greater than the first opening and less than the cavity of the shell.

[0009] Preferably, the float is a spherical structure.

[0010] Preferably, the top of the shell is a spherical surface, an arc surface, a conical surface or a flat surface structure.

[0011] Preferably, the shape of the top of the shell is adapted to the external contour of the float.

[0012] The utility model provides an air pump water suction prevention device, which has the following beneficial effects:

[0013] 1. The second opening is offset from the center of the bottom of the shell, which can ensure smooth air intake of the second opening.

[0014] 2. When the device enters the water road, water enters the shell from the second opening, the liquid level rises, and the float floats up. When the float floats to the top of the shell, the float tightly fits the first opening and seals the first opening. The first opening is closed, the liquid level is kept below the float, the air pump is prevented from sucking liquid, and damage to the air pump is avoided.

[0015] 3. When the device leaves the water-covered road surface, water will automatically drain out from the second opening due to gravity. After the liquid level drops, the float will drop with the liquid level and separate from the first opening. After the water is completely drained, the float will fall back to the bottom of the shell, and the air passage will be reconnected without affecting the normal operation of the water pump. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the air pump anti-water suction device of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the device during normal air intake.

[0018] Figure 3 This is a schematic diagram of the structure of the device of this utility model when water is introduced;

[0019] Figure 4 This is a schematic diagram of the structure of the device of this utility model when it is draining water.

[0020] In the diagram: 1. Shell; 11. First opening; 12. Second opening; 2. Float. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Embodiment

[0026] Reference Figure 1 A water-proof device for air pump, comprising

[0027] A housing 1, a first opening 11 is arranged at the top center of the housing 1, and a second opening 12 is arranged at the bottom of the housing 1;

[0028] A float 2 is arranged in the housing 1 and can move back and forth in the vertical direction along the cavity of the housing 1, the density of the float is less than that of water, and the float can float to the top of the housing 1 to seal the first opening 11.

[0029] In use, the first opening 11 is connected with the air inlet and outlet of the air pump, and the second opening 12 is communicated with the outside air. In the initial state, the float 2 is located at the bottom of the housing 1 due to the action of gravity, and the second opening 12 is arranged offset from the center of the bottom of the housing 1, so as to ensure that the second opening 12 is unobstructed.

[0030] Reference Figure 2 When the air pump is started and the device normally inhales air, the gas enters from the second opening 12 and flows out from the first opening 11, and the gravity of the float 2 is greater than the upward force of the gas flow on the float 2, so that the float 2 is still located at the bottom of the housing 1.

[0031] Reference Figure 3 When the device enters the water road, water enters the housing 1 from the second opening 12, and the liquid level rises, and the float 2 floats up with it. When the float 2 floats to the top of the housing 1, the float 2 tightly abuts against the first opening 11 to seal the first opening 11, and the first opening 11 is closed, and the liquid level is kept below the float 2, so as to ensure that the air pump does not inhale liquid and avoid damage to the air pump. If the air pump is inhaling air at the same time, a negative pressure is formed at the first opening 11, which further ensures the sealing effect between the float 2 and the first opening 11.

[0032] Referring to Figure 4 When the device leaves the wading road surface, water is automatically discharged from the second opening 12 under the influence of gravity, and after the liquid level drops, the float 2 drops with the liquid level and separates from the first opening 11, and after the water is completely discharged, the float 2 falls back to the bottom of the shell 1, and the air path is reconnected, which does not affect the normal operation of the water pump.

[0033] In practical application, if the float 2 and the first opening 11 are difficult to separate due to material deformation and negative pressure, the back blowing function of the air pump can be used to help separate them, or the separation can be achieved through the movement of the vehicle body.

[0034] In a specific embodiment, the width of the float 2 is greater than the first opening 11 and less than the chamber of the shell 1.

[0035] In a specific embodiment, the float 2 is a spherical structure.

[0036] Of course, the float of the utility model is not limited to a spherical structure, and structures such as a rugby ball and a flat plate can also be used.

[0037] In a specific embodiment, the top of the shell 1 is a spherical surface, an arc surface, a conical surface or a flat surface structure.

[0038] Preferably, the shape of the top of the shell 1 is adapted to the external contour of the float 2. For example, when the float 2 is a spherical structure, the top of the shell 1 is also a corresponding spherical surface structure, which is adapted to the float 2, so that the contact area of the float 2 and the top of the shell 1 can be increased, and the sealing effect of the first opening 11 is better.

[0039] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An air pump water-avoiding device, characterized by: Comprising A shell, a first opening is provided in the center of the top of the shell, a second opening is provided in the bottom of the shell deviated from the center; a float is located in the shell, which can move back and forth in the vertical direction along the cavity of the shell, the density of the float is less than water, and the float can float to the top of the shell to seal the first opening.

2. The water absorption preventing device for air pump according to claim 1, characterized in that: The width of the float is greater than the first opening and less than the cavity of the shell.

3. The water absorption preventing device for air pump according to claim 1, characterized in that: The float is a spherical structure.

4. The air pump water prevention device of claim 1, wherein: The top of the shell is a spherical surface, an arc surface, a conical surface or a flat surface structure.

5. The air pump water prevention device of claim 1, wherein: The shape of the top of the shell is matched with the external contour of the float.

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