Plate type one-way valve with ultralow opening pressure

Abstract

The utility model belongs to the technical field of aviation fuel systems, and discloses a plate type one-way valve with ultralow opening pressure, which comprises a valve body, a first shaft, a rocker arm and a valve component, an upward inclined angle is arranged at an opening of the valve body, the rocker arm is rotatably mounted above the opening of the valve body through the first shaft, and the valve component is connected onto the rocker arm. The valve assembly covers the opening of the valve body, and a sealing structure is arranged between the valve assembly and the edge of the opening of the valve body. The plate type one-way valve has ultra-low opening pressure, meanwhile, the requirements that a kidney-shaped installation hole is complex in structure, the reverse sealing requirement is strict, and the forward opening pressure requirement is low are met, the opening pressure is obtained after the weight, the force arm and the opening angle are calculated, and the gravity, the force arm, the opening angle and other characteristics of a heat exchange design structure can be calculated according to the opening pressure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the aviation fuel system technical field relates to the plate type check valve, specifically relates to a kind of plate type check valve of ultra-low opening pressure. BACKGROUND

[0002] In order to improve flight range and safety in flight, aircraft fuel tank is generally designed in sections, to avoid oil crossflow in aircraft tank, keep the fuel in the tank unidirectional flow to the fuel tank. This kind of product is widely used in aviation, shape is various, and there are many kinds. With the continuous increase of new research aircraft type in our country, the improvement of safety and reliability, the improvement of airworthiness requirements, the performance, safety, reliability and environmental adaptability of the plate type check valve used are put forward higher and higher requirements, under the premise of guaranteeing reverse sealing, positive opening pressure (oil surface is smaller and better), to reduce the residual oil quantity in aircraft tank.

[0003] The existing plate type check valve has good reverse sealing or low opening pressure, but the two indicators conflict with each other, resulting in the other indicator being poor. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems, the utility model provides a kind of plate type check valve of ultra-low opening pressure, which overcomes the waist type (different sex) installation hole, complex structure, strict reverse sealing requirement, low positive opening pressure requirement, and has ultra-low opening pressure, i.e. ≯90Pa opening pressure.

[0005] The technical scheme of the utility model is as follows:

[0006] A kind of plate type check valve of ultra-low opening pressure, including valve body, first shaft, rocker arm and check valve assembly, the opening of valve body has oblique angle to the upper side, rocker arm is rotatably installed above the opening of valve body by first shaft, check valve assembly is connected on rocker arm, check valve assembly covers the opening of valve body, and sealing structure is provided between check valve assembly and valve body opening edge.

[0007] Further, the inner side of check valve assembly is provided with groove, and sealing ring is arranged in the groove.

[0008] Further, the opening edge of valve body has uniform protrusion corresponding to the position of sealing ring.

[0009] Further, the opening pressure of check valve assembly is ≯90Pa.

[0010] Further, it further includes second shaft, first shaft is horizontally arranged above the opening of valve body, second shaft is vertically arranged on rocker arm, and check valve assembly is connected by second shaft and rocker arm shaft.

[0011] Further, there is a fine adjustment gap between the first shaft and the rocker arm, and a fine adjustment gap between the second shaft and the valve assembly.

[0012] The utility model discloses the beneficial effect is as follows:

[0013] 1, put forward a kind of ultra-low opening pressure (≯90Pa) of plate type one-way valve, overcome waist type (different sex) mounting hole, complex structure, reverse sealing requirement is strict, the requirement of low opening pressure, it is necessary to design a kind of ultra-low opening pressure (≯90Pa) of plate type one-way valve.

[0014] 2, opening pressure is obtained after calculating by weight, force arm and opening angle, can be opening pressure calculation heat exchange design structure's gravity, force arm and opening angle etc. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be needed to use the drawing described in the embodiment briefly introduced, obviously, the drawing in the following description is only some embodiments of the utility model, for those skilled in the art, without creative labor, according to these drawings, other drawings can also be obtained.

[0016] Figure 1 It is the structure principle diagram of a kind of ultra-low opening pressure plate type one-way valve of the utility model one embodiment;

[0017] Figure 2 It is the front view of a kind of ultra-low opening pressure plate type one-way valve of the utility model one embodiment;

[0018] Wherein, 1-valve body, 2-first shaft, 3-rocker arm, 4-second shaft, 5-valve assembly, 6-gasket, 7-gasket. DETAILED DESCRIPTION

[0019] This part is the embodiment of the utility model, for explaining and illustrating the technical scheme of the utility model.In the case of no conflict, the embodiment of the utility model and the features in the embodiment can be combined with each other.

[0020] In the description of the utility model, it needs to be understood that, the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the direction or position relationship based on the position or location relationship of the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0021] In the description of the utility model, it needs to be understood that, the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the direction or position relationship based on the position or location relationship of the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0022] Embodiment 1:

[0023] Figure 1 It is a structure principle diagram of a plate type one-way valve with ultra-low opening pressure.

[0024] Reference Figure 1 Valve body 1, first shaft 2, rocker arm 3, second shaft 4, valve assembly 5, gasket 6, gasket 7.

[0025] A plate type one-way valve with ultra-low opening pressure, comprising a valve body 1, a first shaft 2, a rocker arm 3 and a valve assembly 5, the valve body 1 has an upward inclined angle at the opening, the rocker arm 3 is rotatably installed above the opening of the valve body 1 through the first shaft 2, the valve assembly 5 is connected to the rocker arm 3, the valve assembly 5 covers the opening of the valve body 1, and a sealing structure is arranged between the valve assembly 5 and the opening edge of the valve body 1.

[0026] The inner side of the valve assembly 5 is provided with a groove, and the sealing ring is arranged in the groove.

[0027] The opening edge of the valve body 1 has uniform protrusions corresponding to the position of the sealing ring.

[0028] The opening pressure of the valve assembly 5 is ≯ 90Pa.

[0029] Second shaft 4 is arranged vertically on the rocker arm 3, and the valve assembly 5 is connected with the second shaft 4 and the rocker arm 3.

[0030] The first shaft 2 and the rocker arm 3 have a fine adjustment gap, and the second shaft and the valve assembly 5 have a fine adjustment gap.

[0031] 1、The utility model discloses a reasonable design rocker arm size makes the valve force arm and valve positive oil pressure force arm ratio as small as possible, and under the premise of meeting the size range and weight requirement, makes the opening pressure reach minimum.

[0032] 2、The utility model discloses a reasonable design valve assembly and valve body sealing mode - line seal, and makes the sealing contact area as small as possible, improves sealing specific pressure under the same stress condition, guarantees the reverse sealing property of product.

[0033] 3、The utility model discloses a reasonable design shaft and valve assembly, rocker arm's shaft hole gap, and the valve assembly can be automatically aligned, and the sealing capacity is improved.

[0034] 4、The utility model discloses a gasket is used between the rocker arm and the valve body, improves the wear resistance of product, and improves the service life.

[0035] 5、The first shaft and the second shaft adopt the pinch technology, and the assembly difficulty is reduced.

[0036] 6、The utility model discloses a suitable adapter R angle is designed to the rocker arm, guarantees product and forms the limit when being completely opened with the valve body, avoids being unable to close after opening.

[0037] Finally, it should be noted that: the above examples are only used to illustrate the technical scheme of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model.

Claims

1. A plate-type one-way valve with ultra-low opening pressure, characterized in that: The invention comprises a valve body (1), a first shaft (2), a rocker arm (3) and a valve assembly (5); the opening of the valve body (1) has an upward tilt angle, the rocker arm (3) is rotatably mounted above the opening of the valve body (1) via the first shaft (2), the valve assembly (5) is connected to the rocker arm (3), the valve assembly (5) covers the opening of the valve body (1), and a sealing structure is provided between the valve assembly (5) and the edge of the opening of the valve body (1).

2. The plate-type one-way valve with ultra-low opening pressure according to claim 1, characterized in that: A groove is provided on the inner side of the valve assembly (5), and a sealing ring is arranged in the groove.

3. The plate-type one-way valve with ultra-low opening pressure according to claim 1, characterized in that: The opening edge of the valve body (1) has uniform bulges corresponding to the position of the sealing ring.

4. The plate-type one-way valve with ultra-low opening pressure according to claim 1, characterized in that: The opening pressure of the valve assembly (5) is ≯90Pa.

5. The plate-type one-way valve with ultra-low opening pressure according to claim 1, characterized in that: It also includes a second shaft (4), wherein the first shaft is horizontally arranged above the opening of the valve body (1), and the second shaft (4) is vertically arranged on the rocker arm (3), and the valve assembly (5) is connected to the rocker arm (3) through the second shaft (4).

6. The plate-type one-way valve with ultra-low opening pressure according to claim 5, characterized in that: There is a fine adjustment gap between the first shaft (2) and the rocker arm (3), and there is a fine adjustment gap between the second shaft and the valve assembly (5).

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