Water adding vent valve of floater structure

Abstract

The utility model discloses a water adding vent valve of a floater structure, and relates to the field of aviation water systems. The valve comprises a valve body and an end cover, the top of the valve body is in threaded connection with the bottom of the end cover, and a floater is arranged in a cavity formed by the valve body and the end cover. The water adding device can be conveniently connected to a water adding pipeline through the universal hoop, after water adding is completed, the floater falls down due to the gravity effect, air enters the floater, residual water in the pipeline is completely discharged, and leakage cannot be caused in the water adding process; in addition, impurities and pollutants in the air cannot enter a pipeline through the filter disc with high filtering precision, and the purity of drinking water is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of aviation water systems, and more specifically to a water-adding ventilation valve with a float structure. Background Art

[0002] In the field of aviation water systems, most of my country's equipment is imported from abroad, and my country's water system industry is in its infancy. Most of the aircraft currently using domestically produced water system equipment are models such as ARJ21 and C919.

[0003] In domestic large passenger aircraft, the design of the water system is particularly important to meet the physiological needs and comfort requirements of passengers and crew members; in traditional water systems such as the ARJ21, after ground crew fill water into the aircraft's drinking water tank, water accumulates in the water filling / discharge pipelines of the drinking water system, which may freeze and cause pipe expansion or even freezing and cracking, posing certain risks.

[0004] Therefore, it is necessary to develop a water-adding vent valve with a float structure installed on a water-adding / discharging pipeline of a drinking water system to help discharge water in the pipeline. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and to provide a water-adding ventilation valve with a float structure.

[0006] In order to achieve the above purpose, the technical solution of the utility model is: a water-adding ventilation valve with a float structure, characterized in that it includes a valve body and an end cover, the top of the valve body is connected to the bottom of the end cover by threads, and a float is arranged in the cavity formed by the valve body and the end cover.

[0007] In the above technical solution, a sealing ring is arranged between the valve body and the end cover.

[0008] In the above technical solution, a filter disc is arranged on the top of the end cover, and a retaining ring is arranged above the filter disc.

[0009] In the above technical solution, a joint is provided at the bottom of the valve body.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1) The utility model can be conveniently connected to the water-adding pipeline through a universal clamp. After the water is added, the float falls due to gravity, allowing air to enter and completely discharge the residual water in the pipeline, and no leakage will occur during the water-adding process. In addition, the filter with high filtration accuracy will not allow impurities and pollutants in the air to enter the pipeline, thereby ensuring the purity of drinking water.

[0012] 2) The utility model meets the airworthiness requirements, has a simple and reliable structure, is economical, has strong interchangeability and versatility, and is easy to use and promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Among them, 1-valve body, 11-connector, 2-end cover, 21-filter disc, 22-retaining ring, 3-float, 4-sealing ring, 5-cavity. DETAILED DESCRIPTION

[0015] The following is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but they do not constitute a limitation of the utility model and are only used as examples. At the same time, the advantages of the utility model will become clearer and easier to understand through the description.

[0016] Referring to the attached drawings, it can be seen that a water-adding ventilation valve with a float structure is characterized in that it includes a valve body 1 and an end cover 2, the top of the valve body 1 is connected to the bottom of the end cover 2 by threads, the valve body 1 and the end cover 2 are connected, and a float 3 is arranged in a cavity 5 formed by the valve body 1 and the end cover 2.

[0017] A sealing ring 4 is arranged between the valve body 1 and the end cover 2 .

[0018] A filter disc 21 is arranged on the top of the end cover 2, and a retaining ring 22 is arranged above the filter disc 21; the function of the filter disc 21 is to prevent impurities and pollutants in the air from entering the pipeline to ensure the purity of water in the pipeline; the function of the retaining ring 22 is to fix the filter disc 21.

[0019] A joint 11 is provided at the bottom of the valve body 1 .

[0020] In actual use, the role of the sealing ring 4 is to ensure that there is no leakage between the end cover 2 and the valve body 1. The role of the float 3 is not only to ensure sealing during the water adding process, but also to allow air to enter the pipeline after the water adding is completed, which helps to discharge the water in the pipeline.

[0021] The materials of the utility model are all food grade and meet the safety requirements of drinking water.

[0022] The end cover 2 and the valve body 1 are made of stainless steel, which has good high temperature stability and excellent anti-corrosion and anti-mildew properties, making it widely used in aviation products and highly practical.

[0023] The filter disc 21 is sintered by multiple layers of stainless steel mesh, including a warp and weft skeleton mesh, a layer of middle mesh, two layers of protective mesh and a layer of filter mesh, and has high precision and can achieve a filtering accuracy of 10 μm.

[0024] The material of the float 3 is polytetrafluoroethylene, which has high strength and low friction coefficient, so that the friction between the float 3 and the stainless steel valve body 1 and the end cover 2 is small and almost wear-free; at the same time, it has low water absorption and will not deform under long-term operation, which greatly improves the service life of the product.

[0025] The material of the sealing ring 4 is nitrile rubber, which has excellent heat resistance, corrosion resistance and mildew resistance. It is a fairly mature material used in aviation products, with high practicality and high economic benefits.

[0026] The float 3 is confined in the cavity 5 , and the diameter of the cavity 5 is larger than the diameters of the valve body 1 and the end cover 2 .

[0027] Other parts not described belong to the prior art.

Claims

1. A water-adding ventilation valve with a float structure, characterized in that: It comprises a valve body (1) and an end cover (2); the top of the valve body (1) is connected to the bottom of the end cover (2) via threads; a float (3) is arranged in a cavity formed by the valve body (1) and the end cover (2).

2. A water-adding ventilation valve with a float structure according to claim 1, characterized in that: A sealing ring (4) is provided between the valve body (1) and the end cover (2).

3. The water-adding ventilation valve with a float structure according to claim 1, characterized in that: A filter disc (21) is arranged on the top of the end cover (2), and a retaining ring (22) is arranged above the filter disc (21).

4. The water-adding ventilation valve with a float structure according to claim 1, characterized in that: A joint (11) is provided at the bottom of the valve body (1).

Images