Fixed flow regulating valve

Abstract

The fixed flow regulating valve comprises at least one valve body unit, and each valve body unit comprises a valve sleeve, an upper-layer valve plate, a lower-layer valve plate and a valve element. The upper-layer valve plate and the lower-layer valve plate are located in the valve sleeve, and valve holes used for forming small hole throttling for liquid flow are formed in the upper-layer valve plate and the lower-layer valve plate correspondingly. The valve element is located between the upper-layer valve plate and the lower-layer valve plate, the valve element is provided with a structural part in an isosceles triangle shape, vortex mixing throttling of liquid flow is formed on the side face of the structural part, and reverse flowing throttling of the liquid flow is formed at the end of the bottom side of the structural part; and collision throttling of liquid flow is formed between the bottom side of the structural part and the lower-layer valve plate. According to the regulating valve, a special-shaped channel is formed by the valve plate, the valve element and the valve sleeve, so that multiple links and multiple types of throttling effects of small hole throttling, vortex mixing throttling, reverse flow throttling and collision throttling can be carried out on liquid flow in a single stage, the throttling effect of single-stage throttling is enhanced, and the size of the valve is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of aviation hydraulic systems, and in particular to a fixed flow regulating valve. Background Art

[0002] In aviation hydraulic systems, fixed throttle valves are widely used because they are less affected by temperature, not easy to clog, can obtain a lower minimum stable flow rate, and have high reliability.

[0003] The fixed throttle valve commonly used in aircraft hydraulic systems is a simple, laminated throttle valve. It consists of multiple valve plates and partitions connected in series with a valve sleeve. The valve plates are thin-walled circular metal plates with eccentric holes, the partitions are annular metal plates, and the valve sleeve is a circular sleeve. The partitions provide support and ensure the required distance between the two valve plates. The holes in each adjacent valve plate are staggered 180° circumferentially. During operation, the thin-walled holes create throttling resistance to the fluid flow, resulting in a pressure drop each time the fluid passes through the valve plate holes. After multiple passes through the valve plates, the fluid pressure is significantly reduced.

[0004] The throttling principle of the layered throttle valve is to rely on the throttling of "thin-walled small holes". Since the throttling effect of a single small hole is limited, multiple valve plates and partitions are usually required to be used in series, so the valve is long and large in size. At the same time, since the throttling hole is a "thin-walled small hole", the wall thickness of the valve plate is small and it is easy to deform under high pressure. Therefore, the valve plate is not suitable for high pressure conditions, the throttling effect is poor, and its use is very limited. Summary of the Invention

[0005] The object of the present invention is to provide a fixed flow regulating valve to solve the problem of poor throttling effect of the existing throttle valve.

[0006] The present invention solves the above technical problems with the following technical solutions: A fixed flow control valve comprises at least one valve body unit, the valve body unit comprising a valve sleeve, an upper valve plate, a lower valve plate and a valve core;

[0007] The upper valve plate and the lower valve plate are respectively located inside the valve sleeve, and are respectively provided with valve holes for forming small hole throttling for the liquid flow;

[0008] The valve core is located between the upper valve plate and the lower valve plate, and the valve core has an isosceles triangle structure. The side of the structure is used to form a vortex mixing throttling of the liquid flow, and the bottom end of the structure forms a reverse flow throttling of the liquid flow; the bottom side of the structure and the lower valve plate form a collision throttling of the liquid flow;

[0009] The center of the structural member and the center of the valve hole are located on the same straight line.

[0010] Furthermore, the bottom side of the isosceles triangle-shaped structural member is parallel to the lower valve plate and there is a distance between the two, and the distance is a cavity that forms a liquid flow collision loss.

[0011] Furthermore, the width of the bottom side of the isosceles triangle structure is greater than the width of the upper valve hole of the lower valve plate, so that the bottom end of the structure is formed to achieve return loss of liquid flow.

[0012] Furthermore, there is a distance between the vertex of the isosceles triangle structure and the upper valve plate.

[0013] Furthermore, the valve core includes supporting bosses located on two sides and the structural member located between the two supporting bosses and forming an isosceles triangle.

[0014] Furthermore, the upper valve plate and the lower valve plate are both rectangular structures.

[0015] Furthermore, there are multiple valve body units, and adjacent valve body units are connected in series to form a multi-stage pressure reduction structure.

[0016] Furthermore, the valve sleeve is a sleeve-type structure with a rectangular hole.

[0017] The present invention has the following beneficial effects: the fixed flow regulating valve provided by the present invention has a reliable structure and good performance. The flow regulating valve has the characteristics of fixed flow channel shape and area, little influence of valve performance on temperature, not easy to clog, low minimum stable flow, high reliability, etc., and through the specially shaped channel composed of the valve plate, valve core and valve sleeve, the liquid flow can be subjected to multiple links and multiple types of throttling effects such as small hole throttling, vortex mixing throttling, reverse flow throttling and collision throttling in a single stage, thereby enhancing the throttling effect of single-stage throttling and reducing the volume of the valve; at the same time, due to the multi-throttling link structure of the valve, the thickness of the valve plate can be greatly increased, which effectively improves the structural strength of the flow regulating valve and increases the adaptability of the regulating valve to high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 Schematic diagram of the structure of the upper valve plate or the lower valve plate in the present invention;

[0020] Figure 3 This is a schematic diagram of the valve core structure in the present invention;

[0021] Figure 4 Schematic diagram of the throttling principle of the flow control valve in the present invention;

[0022] Figure 5It is a multi-valve core series structure of the flow control valve in the present invention;

[0023] Figures 1 to 5 The reference numerals shown in the figure are respectively: 1-upper valve plate, 2-valve core, 3-valve sleeve, 4-lower valve plate. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] like Figures 1 to 3 As shown, a fixed flow control valve comprises at least one valve unit, which includes an upper valve plate 1, a lower valve plate 4, a valve core 2, and a valve sleeve 3. The upper and lower valve plates 1 and 4 are identical in structure, each consisting of a metal plate with a hole in the center. Both are rectangular in structure. The valve core 2 is an H-shaped component with support structures on both sides and connected by an isosceles triangle in cross section. The valve sleeve 3 is a sleeve-shaped component with a rectangular hole in the center.

[0026] like Figure 4 As shown, a fixed special channel is formed by the combination of the valve plate, the valve core 2 and the valve sleeve 3. When the liquid flows through the channel, it will generate multiple links such as small hole loss, vortex loss at one place on each side, return loss at one place on each side and collision loss, thereby achieving a reliable throttling effect.

[0027] The upper valve plate 1 and the lower valve plate 4 are respectively located inside the valve sleeve 3, and the upper valve plate 1 and the lower valve plate 4 are respectively provided with valve holes for forming small hole throttling for the liquid flow; the valve core 2 is located between the upper valve plate 1 and the lower valve plate 4, and the valve core 2 has a structural member in the shape of an isosceles triangle, the side of the structural member is used to form a vortex mixing throttling of the liquid flow, and the bottom end of the structural member forms a reverse flow throttling of the liquid flow; a collision throttling of the liquid flow is formed between the bottom side of the structural member and the lower valve plate 4; the center of the structural member and the center of the valve hole are located on the same straight line.

[0028] Based on the above structure, when the regulating valve of the present application is used, each time the liquid flow passes through a throttling, i.e., a single-stage throttling, it will sequentially go through multiple links such as small hole throttling, vortex mixing throttling, reverse flow throttling and collision throttling. Figure 4 After the liquid flow passes through these links and suffers flow losses, the pressure at the valve outlet will drop significantly.

[0029] In the present invention, the bottom side of the isosceles triangle-shaped structural member is parallel to the lower valve plate 4 and there is a distance between the two, and the distance is a cavity that forms the liquid flow collision loss. The bottom side width of the structural member is greater than the width of the valve hole on the lower valve plate 4, so that the bottom side end of the structural member is formed to achieve the return loss of the liquid flow. There is a distance between the vertex of the structural member and the upper valve plate 1. The liquid flows in and out of the valve hole of the upper valve plate 1 to achieve the first small hole throttling, and then is diverted at the top of the isosceles triangle-shaped structural member, flows along the two sides of the structure, forms vortices on the sides, realizes vortex mixing throttling, and turns back at the end of the bottom surface to form reverse flow throttling. Finally, the liquid flows from both sides of the structural member through the cavity to the valve hole of the lower valve plate 4. In this process, the liquid flows on the left and right sides collide, thereby forming collision throttling, forming multi-stage throttling, and effectively reducing the pressure at the valve outlet.

[0030] In the present invention, the valve core 2 includes supporting bosses on two sides and a structural member located between the two supporting bosses and in the shape of an isosceles triangle.

[0031] According to actual use needs, in the present invention, there are multiple valve body units, and adjacent valve body units are connected in series to form a multi-stage pressure reduction structure. Figure 5 Forming multi-stage pressure reduction can increase the pressure reduction effect of the entire valve.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fixed flow control valve, characterized in that: It comprises at least one valve body unit, wherein the valve body unit comprises an upper valve plate (1), a valve core (2), a valve sleeve (3) and a lower valve plate (4); The upper valve plate (1) and the lower valve plate (4) are respectively located inside the valve sleeve (3), and the upper valve plate (1) and the lower valve plate (4) are respectively provided with valve holes for forming small hole throttling for liquid flow; The valve core (2) is located between the upper valve plate (1) and the lower valve plate (4), and the valve core (2) has a structural member in the shape of an isosceles triangle, the side of the structural member forms a vortex mixing throttling of the liquid flow, and the bottom end of the structural member forms a reverse flow throttling of the liquid flow; the bottom side of the structural member and the lower valve plate (4) form a collision throttling of the liquid flow; The center of the structural member and the center of the valve hole are located on the same straight line.

2. The fixed flow control valve according to claim 1, characterized in that: The bottom edge of the structural member in the form of an isosceles triangle is parallel to the lower valve plate (4), and there is a distance between the two, and the distance is a cavity that forms a liquid flow collision loss.

3. The fixed flow control valve according to claim 1, characterized in that: The bottom width of the structural member in the shape of an isosceles triangle is greater than the width of the valve hole on the lower valve plate (4), so that the bottom end of the structural member is formed to achieve return loss of liquid flow.

4. The fixed flow control valve according to claim 1, characterized in that: There is a distance between the vertex of the structural member in the shape of an isosceles triangle and the upper valve plate (1).

5. The fixed flow control valve according to claim 1, characterized in that: The valve core (2) comprises supporting bosses located on two sides and a structural member located between the two supporting bosses and in the form of an isosceles triangle.

6. The fixed flow control valve according to any one of claims 1 to 5, characterized in that: The upper valve plate (1) and the lower valve plate (4) are both rectangular structures.

7. The fixed flow control valve according to claim 1, characterized in that: There are multiple valve body units, and adjacent valve body units are connected in series to form a multi-stage pressure reduction structure.

8. The fixed flow control valve according to claim 6, characterized in that: The valve sleeve (3) is a sleeve-type structure with a rectangular hole.

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