Dual valve linked flow device and aircraft fluid system

Abstract

The utility model provides a kind of double valve linkage formula mixing flow device and aircraft fluid system, wherein, double valve linkage formula mixing flow device includes valve body, connecting rod and driving mechanism, valve body has the first valve inlet, second valve inlet and valve outlet of intercommunication;First valve inlet is equipped with the first valve plate that is rotated open and close by first rotating shaft, second valve inlet is equipped with the second valve plate that is rotated open and close by second rotating shaft, first rotating shaft and second rotating shaft are parallelly arranged;One end of connecting rod is hinged with first valve plate, the other end of connecting rod is hinged with second valve plate;First valve plate, connecting rod and second valve plate are connected to form parallelogram mechanism;Driving mechanism is used to drive first valve plate rotation, so that first valve plate drives second valve plate rotation by connecting rod. According to the utility model, each valve plate need not be adjusted respectively, the opening angle of each valve plate can be guaranteed to keep consistent, so that operation is more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a dual-valve linkage mixing device and an aircraft fluid system. Background Technology

[0002] The aircraft fluid system has a cold air channel, a hot air channel, and a mixing air channel. The cold air channel is used to transport cold air, which comes from the compressed air in the aircraft's cold air duct. The hot air channel is used to transport hot air, which comes from the bleed air in the aircraft engine. The mixing air channel is connected to both the cold air channel and the hot air channel. After the cold air and hot air flow into the mixing air channel and mix, they can be used for de-icing and defrosting at the turbine outlet.

[0003] Currently, cold air and hot air channels are generally controlled separately by valves. To ensure uniform mixing of cold and hot air within the mixing channel, it is generally required that the opening and closing angles of the valve plates in both the cold and hot air channels be consistent. This is typically achieved by adjusting the opening and closing angles of the valve plates in the cold air channel and the hot air channel respectively. However, this method is rather cumbersome, thus requiring a solution. Utility Model Content

[0004] Therefore, this utility model provides a dual-valve linkage mixing device and an aircraft fluid system, which can solve the technical problem in the prior art that in order to keep the valve plates of the two connected valves open and close at the same angle, it is necessary to adjust the opening and closing angle of each valve plate separately, which leads to a cumbersome operation.

[0005] Technical issues.

[0006] To address the aforementioned problems, this utility model provides a dual-valve linkage mixing device, comprising a valve body, a connecting rod, and a driving mechanism. The valve body has a first valve inlet, a second valve inlet, and a valve outlet; both the first valve inlet and the second valve inlet are connected to the valve outlet. The first valve inlet is provided with a first valve plate that opens and closes by rotating via a first rotating shaft, and the second valve inlet is provided with a second valve plate that opens and closes by rotating via a second rotating shaft. The first rotating shaft and the second rotating shaft are arranged parallel to each other. One end of the connecting rod is hinged to the first valve plate, and the other end of the connecting rod is hinged to the second valve plate. In a cross-section perpendicular to the axis of the first rotating shaft and coinciding with the center line of the connecting rod, the line a connecting the centers of the first rotating shaft and the second rotating shaft is parallel to the center line of the connecting rod. The distance between one end of the connecting rod and the center of the first rotating shaft is L1, and the distance between the other end of the connecting rod and the center of the second rotating shaft is L2, where L1 = L2. The driving mechanism is used to drive the first valve plate to rotate, so that the first valve plate drives the second valve plate to rotate via the connecting rod.

[0007] In some embodiments, the drive mechanism includes a motor to drive the first valve plate to rotate.

[0008] In some implementations, the connecting rod is an electrically operated telescopic rod.

[0009] In some embodiments, the connecting rod includes a first rod segment, an electric telescopic cylinder, and a second rod segment. The first rod segment is connected to the second rod segment via the electric telescopic cylinder. The end of the first rod segment facing away from the electric telescopic cylinder serves as one end of the connecting rod, and the end of the second rod segment facing away from the electric telescopic cylinder serves as the other end of the connecting rod. The electric telescopic cylinder is used to move the first rod segment and the second rod segment closer together or further apart during telescopic movement.

[0010] In some embodiments, the number of connecting rods is two or more.

[0011] In some embodiments, the connecting rod includes a first rod segment, an electric telescopic cylinder, and a second rod segment, with the first rod segment connected to the second rod segment via the electric telescopic cylinder; the end of the first rod segment facing away from the electric telescopic cylinder serves as one end of the connecting rod, and the end of the second rod segment facing away from the electric telescopic cylinder serves as the other end of the connecting rod; when the electric telescopic cylinder is used to extend or retract, it causes the first rod segment and the second rod segment to move closer or further apart relative to each other. Each of the connecting rods includes a first connecting rod and a second connecting rod. The first segments of the first connecting rod and the second connecting rod are connected by a first connecting rod. One end of the first connecting rod is hinged to the first segment of the first connecting rod, and the other end of the first connecting rod is hinged to the first segment of the second connecting rod. And / or, the second segments of the first connecting rod and the second connecting rod are connected by a second connecting rod. One end of the second connecting rod is hinged to the second segment of the first connecting rod, and the other end of the second connecting rod is hinged to the second segment of the second connecting rod.

[0012] In some embodiments, a flow equalization plate is provided at the valve outlet for equalizing the flow of fluid at the valve outlet.

[0013] In some embodiments, the flow equalization plate is provided with a plurality of uniformly distributed through holes to equalize the flow of fluid at the valve outlet through each through hole.

[0014] This utility model also provides an aircraft fluid system, which includes the dual-valve linkage mixing device described in any one of the above descriptions.

[0015] The dual-valve linkage mixing device and aircraft fluid system provided by this utility model have the following beneficial effects: This invention establishes a parallelogram mechanism by forming a first valve plate, a second valve plate, and a connecting rod. When the drive mechanism rotates the first valve plate, the first valve plate can drive the second valve plate to rotate and open / close at the same angle via the connecting rod. Thus, when this dual-valve linkage mixing device is applied to an aircraft fluid system, with the first valve inlet connected to the cold air channel, the second valve inlet connected to the hot air channel, and the valve outlet connected to the mixing air channel, the parallelogram mechanism formed by the first valve plate, the second valve plate, and the connecting rod ensures that the opening and closing angles of the first and second valve plates remain consistent. Compared to existing technologies that require adjusting the opening and closing angles of each valve plate individually to maintain consistency between the two connected valves, this invention eliminates the need for individual valve plate adjustments, ensuring consistent opening and closing angles and making operation more convenient. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a dual-valve linkage mixing device provided in one embodiment of the present invention; Figure 2 It is a schematic diagram showing the parallelogram mechanism formed by the connection of the first valve plate, the second valve plate, and the connecting rod; Figure 3 This is a schematic diagram showing the connection between the first valve plate, the second valve plate, and the connecting rod when the connecting rod extends. Figure 4 This is a schematic diagram of the flow equalization plate.

[0018] The attached figures are labeled as follows: 1. Valve body; 2. First valve plate; 3. Second valve plate; 4. Connecting rod; 5. Second connecting rod; 6. Flow equalization plate; 4a. First connecting rod; 4b. Second connecting rod; 21. First rotating shaft; 22. Second rotating shaft; 41. First rod segment; 42. Electric telescopic cylinder; 43. Second rod segment; 61. Through hole; 100. Connecting cavity; 101. First valve inlet; 102. Second valve inlet; 103. Valve outlet; 401. One end of the connecting rod; 402. The other end of the connecting rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0021] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0023] See also Figure 1-3As shown, according to an embodiment of the present invention, a dual-valve linkage mixing device is provided, which includes a valve body 1, a connecting rod 4, and a driving mechanism. The valve body 1 has a first valve inlet 101, a second valve inlet 102, and a valve outlet 103. Both the first valve inlet 101 and the second valve inlet 102 are connected to the valve outlet 103.

[0024] A first valve plate 2, which opens and closes rotatably via a first rotating shaft 21, is provided at the first valve inlet 101. A second valve plate 3, which opens and closes rotatably via a second rotating shaft 22, is provided at the second valve inlet 102. The first rotating shaft 21 and the second rotating shaft 22 are arranged parallel to each other. One end 401 of the connecting rod is hinged to the first valve plate 2, and the other end 402 of the connecting rod is hinged to the second valve plate 3. In a cross-section perpendicular to the axis of the first rotating shaft 21 and coinciding with the center line of the connecting rod 4, the line a connecting the centers of the first rotating shaft 21 and the second rotating shaft 22 is parallel to the center line of the connecting rod 4, and the distance between one end 401 of the connecting rod and the center of the first rotating shaft 21 is L1, and the distance between the other end 402 of the connecting rod and the center of the second rotating shaft 22 is L2, where L1 = L2. The driving mechanism is used to drive the first valve plate 2 to rotate, so that the first valve plate 2 drives the second valve plate 3 to rotate via the connecting rod 4.

[0025] In the example above, such as Figure 2 As shown, the first valve plate 2, the second valve plate 3, and the connecting rod 4 form a parallelogram mechanism. When the drive mechanism drives the first valve plate 2 to rotate, the first valve plate 2 can drive the second valve plate 3 to rotate and open / close at the same angle via the connecting rod 4. Thus, when the dual-valve linkage mixing device of this invention is applied to an aircraft fluid system, and the first valve inlet 101 is connected to the cold air channel, the second valve inlet 102 is connected to the hot air channel, and the valve outlet 103 is connected to the mixing air channel, the parallelogram mechanism formed by the first valve plate 2, the second valve plate 3, and the connecting rod 4 can ensure that the opening and closing angles of the first valve plate 2 and the second valve plate 3 are consistent. Compared with the prior art, which requires adjusting the opening and closing angles of each valve plate separately to ensure that the opening and closing angles of the two connected valves are consistent, the solution of this invention does not require adjusting each valve plate separately, thus ensuring that the opening and closing angles of each valve plate are consistent, making operation more convenient.

[0026] In some implementations, such as Figure 1As shown, the centerlines of the aforementioned first valve inlet 101 and second valve inlet 102 can coincide, and the diameters of the first valve inlet 101 and second valve inlet 102 are the same. The valve body 1 has a connecting cavity 100, through which the first valve inlet 101, second valve inlet 102, and valve outlet 103 communicate. Both the first valve inlet 101 and second valve inlet 102 are connected to the valve outlet 103 via the connecting cavity 100. The aforementioned connecting rod 4 is disposed within the connecting cavity 100. The first valve inlet 101 and second valve inlet 102 each form a flow channel, which can be used to transport two fluid media with different temperatures and other properties.

[0027] In some embodiments, the aforementioned drive mechanism may include a motor to drive the first valve plate 2 to rotate. The motor may be a servo motor or a stepper motor, etc.

[0028] In some implementations, the aforementioned connecting rod 4 can be an electrically operated telescopic rod.

[0029] In the above example, since the connecting rod 4 is an electrically telescopic rod, it can extend and retract. This extension and retraction of the connecting rod 4 disrupts the parallelogram mechanism formed by the first valve plate 2, the second valve plate 3, and the connecting rod 4. In other words, the connecting rod 4 can prevent the first valve plate 2, the second valve plate 3, and the connecting rod 4 from forming a parallelogram mechanism, thus locking both the first valve plate 2 and the second valve plate 3. At this point, neither the first valve plate 2 nor the second valve plate 3 can rotate, which is suitable for situations requiring emergency shutdown. For example, when the system detects a fault and needs to shut down urgently, the extension and retraction of the connecting rod 4 can be controlled to lock both the first valve plate 2 and the second valve plate 3.

[0030] The telescopic nature of the connecting rod 4, in conjunction with the aforementioned drive mechanism, enables dual protection for the dual-valve linkage mixing device of this invention. Specifically, when the system detects a fault requiring emergency shutdown, on the one hand, the drive mechanism can be closed to lock and fix both the first valve plate 2 and the second valve plate 3; on the other hand, the connecting rod 4 can be extended or retracted to prevent the first valve plate 2, the second valve plate 3, and the connecting rod 4 from forming a parallelogram mechanism, thereby achieving further locking and fixing of both the first valve plate 2 and the second valve plate 3.

[0031] To achieve the electric telescopic function of the aforementioned connecting rod 4, in some embodiments, such as Figure 1-3As shown, the aforementioned connecting rod 4 may include a first rod segment 41, an electric telescopic cylinder 42, and a second rod segment 43. The first rod segment 41 is connected to the second rod segment 43 via the electric telescopic cylinder 42. The end of the first rod segment 41 facing away from the electric telescopic cylinder 42 serves as one end 401 of the aforementioned connecting rod, and the end of the second rod segment 43 facing away from the electric telescopic cylinder 42 serves as the other end 402 of the aforementioned connecting rod. The electric telescopic cylinder 42 is used to move the first rod segment 41 and the second rod segment 43 closer together or further apart during extension and retraction, thereby realizing the electric extension and retraction function of the connecting rod 4.

[0032] Both the first segment 41 and the second segment 43 of the connecting rod 4 are rigid rods. Both the first segment 41 and the second segment 43 are fixedly connected to the electric telescopic cylinder 42. The specific structure of the electric telescopic cylinder 42 is existing technology and will not be described in detail here.

[0033] In some implementations, such as Figure 1 As shown, the number of the aforementioned connecting rods 4 can be two or more.

[0034] By setting a greater number of connecting rods 4, the stability of the linkage between the first valve plate 2 and the second valve plate 3 can be improved.

[0035] In some embodiments, when the connecting rod 4 includes a first rod segment 41, an electric telescopic cylinder 42, and a second rod segment 43, and the first rod segment 41 is connected to the second rod segment 43 through the electric telescopic cylinder 42; the end of the first rod segment 41 facing away from the electric telescopic cylinder 42 serves as one end 401 of the aforementioned connecting rod, and the end of the second rod segment 43 facing away from the electric telescopic cylinder 42 serves as the other end 402 of the aforementioned connecting rod; when the electric telescopic cylinder 42 is used to extend and retract, it drives the first rod segment 41 and the second rod segment 43 to move closer or further apart, each of the aforementioned connecting rods 4 includes a first connecting rod 4a and a second connecting rod 4b, the first rod segments of the first connecting rod 4a and the second connecting rod 4b are connected by a first connecting rod, one end of the first connecting rod is hinged to the first rod segment of the first connecting rod 4a, and the other end of the first connecting rod is hinged to the first rod segment of the second connecting rod 4b. And / or, the second segments of the first connecting rod 4a and the second connecting rod 4b are connected by a second connecting rod 5, one end of the second connecting rod 5 is hinged to the second segment of the first connecting rod 4a, and the other end of the second connecting rod 5 is hinged to the second segment of the second connecting rod 4b.

[0036] In the above example, by connecting the first connecting rod 4a and the second connecting rod 4b with the first connecting rod 4a or the second connecting rod 4b through a connecting rod, the stability of the linkage between the first connecting rod 4a and the second connecting rod 4b can be improved, thereby improving the stability of the linkage between the first valve plate 2 and the second valve plate 3.

[0037] In some implementations, such as Figure 1As shown, a flow equalization plate 6 for equalizing the flow of fluid at the valve outlet 103 can be provided. The flow equalization plate 6 can uniformly distribute the mixed fluid to multiple directions or regions.

[0038] In some implementations, such as Figure 4 As shown, the aforementioned flow equalization plate 6 may be provided with multiple uniformly distributed through holes 61 to equalize the flow of fluid at the valve outlet 103. The multiple through holes 61 work together to form a honeycomb-like porous structure in the flow equalization plate 6, which can effectively eliminate dead zones and velocity gradients in the fluid flow, ensuring uniform distribution of fluid pressure and velocity in the subsequent delivery pipeline.

[0039] Dead zones refer to areas where fluid flow is slow or impeded, and the fluid cannot effectively participate in the overall flow. Velocity gradients refer to the differences in fluid velocity at different locations, resulting in uneven pressure distribution. The honeycomb-like porous structure formed by multiple through-holes 61 on the flow equalization plate 6 allows the fluid to be divided into multiple smaller streams after entering the plate, with each stream having a more similar velocity, thus reducing overall inhomogeneity. The dense distribution of small holes forces continuous fluid flow, promoting mixing.

[0040] In some embodiments, the present invention also provides an aircraft fluid system comprising any of the above-described dual-valve linkage mixing devices.

[0041] For ease of understanding, the overall structure of this utility model will be described below, and its working principle will be explained.

[0042] This utility model discloses a dual-valve linkage mixing device that integrates dynamic adjustment, fluid mixing, and emergency protection functions. The first valve plate 2 is driven by the aforementioned drive mechanism (such as a servo motor or stepper motor) to control and adjust the opening degree of the first valve inlet 101. The opening degree of the second valve plate 3 is indirectly controlled by the motion state of the first valve plate 2. Specifically, the first valve plate 2, the connecting rod 4, and the second valve plate 3 form a parallelogram mechanism. When the first valve plate 2 is driven to rotate, it can drive the second valve plate 3 to open and close at equal angles via the connecting rod 4.

[0043] Among them, the dual-valve linkage mixing device of this utility model has high reliability: the first valve plate 2 and the second valve plate 3 are protected by a dual mechanism of mechanical linkage structure of connecting rod 4 and extension and retraction characteristics of connecting rod 4, ensuring safe operation under extreme working conditions; it has strong adaptability: by adjusting the opening degree of each valve plate and the structure of the flow equalization plate 6, it can flexibly adapt to different media characteristics and mixing requirements, and realize dynamic mixing of fluids in two flow channels; gas is passed through the two fluid flow channels, and the valve plates can be rotated, and the gas is mixed through different valve plate angle positions.

[0044] The aforementioned drive mechanisms, such as servo motors or stepper motors, form electric actuators, which can be integrated with systems like PLCs to achieve remote monitoring, positioning in complex environments, and automatic adjustment. Specifically, the electric actuator connects to the PLC system, and sensors on the electric actuator acquire real-time kinematic information about the rotation angles of the first valve plate 2 and the second valve plate 3, returning this information to the PLC system. This allows for real-time monitoring of the valve plate angles and observation of their position information. Simultaneously, control programs can be programmed within the PLC system to control the electric actuator, thereby controlling the rotation of the first valve plate 2 and the second valve plate 3.

[0045] This utility model's dual-valve linkage mixing device adopts a dual-valve plate linkage structure, which can simultaneously control the flow rates of two fluids. The combination of mechanical and electric control meets dynamic control requirements. Furthermore, by designing the connecting rod 4 as an electrically telescopic rod, it can quickly disrupt the parallelogram mechanism formed by the first valve plate 2, connecting rod 4, and second valve plate 3 in the event of a transmission malfunction, achieving locking and fixing of the first valve plate 2 and second valve plate 3, ensuring system safety. In addition, by integrating the valve plates, actuator, and electric control into one unit, the system structure is simplified. Moreover, the flow equalization plate 6 installed at the valve outlet 103 can evenly distribute the fluid to multiple directions or areas after mixing, completing the entire mixing process.

[0046] Traditional mixed-flow valve control methods often rely on manual operation, complex mechanical structures, and multiple power controls, which suffer from problems such as complex control, poor matching, and insufficient safety. This invention's dual-valve linkage mixed-flow device can control the dynamic mixing of two fluids, featuring high safety, simple structure, and fast response. Furthermore, the dual-valve design combining mechanical and electric control reduces system complexity, improves system matching, and provides high dynamic controllability.

[0047] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A dual-valve linkage mixing device, characterized in that: The device includes a valve body (1), a connecting rod (4), and a drive mechanism. The valve body (1) has a first valve inlet (101), a second valve inlet (102), and a valve outlet (103). Both the first valve inlet (101) and the second valve inlet (102) are connected to the valve outlet (103). A first valve plate (2) is provided at the first valve inlet (101) and rotates to open and close via a first rotating shaft (21). A second valve plate (3) is provided at the second valve inlet (102) and rotates to open and close via a second rotating shaft (22). The first rotating shaft (21) and the second rotating shaft (22) are arranged parallel to each other. One end (401) of the connecting rod is hinged to the first valve plate (2), and the other end (402) of the connecting rod is hinged to the second valve plate (3). In a cross section perpendicular to the axis of the first rotating shaft (21) and coinciding with the center line of the connecting rod (4), the line a connecting the centers of the first rotating shaft (21) and the second rotating shaft (22) is parallel to the center line of the connecting rod (4). The distance between one end (401) of the connecting rod and the center of the first rotating shaft (21) is L1, and the distance between the other end (402) of the connecting rod and the center of the second rotating shaft (22) is L2, where L1 = L2. The driving mechanism is used to drive the first valve plate (2) to rotate, so that the first valve plate (2) drives the second valve plate (3) to rotate through the connecting rod (4).

2. The dual-valve linkage mixing device according to claim 1, characterized in that: The drive mechanism includes a motor to drive the first valve plate (2) to rotate.

3. The dual-valve linkage mixing device according to claim 1 or 2, characterized in that: The connecting rod (4) is an electric telescopic rod.

4. The dual-valve linkage mixing device according to claim 3, characterized in that: The connecting rod (4) includes a first rod segment (41), an electric telescopic cylinder (42), and a second rod segment (43). The first rod segment (41) is connected to the second rod segment (43) through the electric telescopic cylinder (42). The end of the first rod segment (41) facing away from the electric telescopic cylinder (42) serves as one end (401) of the connecting rod, and the end of the second rod segment (43) facing away from the electric telescopic cylinder (42) serves as the other end (402) of the connecting rod. The electric telescopic cylinder (42) is used to drive the first rod segment (41) and the second rod segment (43) to move closer or further apart when they extend or retract.

5. The dual-valve linkage mixing device according to claim 1, 2, or 4, characterized in that: The number of connecting rods (4) is two or more.

6. The dual-valve linkage mixing device according to claim 5, characterized in that: When the connecting rod (4) includes a first rod segment (41), an electric telescopic cylinder (42), and a second rod segment (43), and the first rod segment (41) is connected to the second rod segment (43) through the electric telescopic cylinder (42); the end of the first rod segment (41) facing away from the electric telescopic cylinder (42) serves as one end (401) of the connecting rod, and the end of the second rod segment (43) facing away from the electric telescopic cylinder (42) serves as the other end (402) of the connecting rod; when the electric telescopic cylinder (42) is used to extend and retract, it drives the first rod segment (41) and the second rod segment (43) to move closer or further apart relative to each other, Each of the connecting rods (4) includes a first connecting rod (4a) and a second connecting rod (4b). The first segments of the first connecting rod (4a) and the second connecting rod (4b) are connected by a first connecting rod. One end of the first connecting rod is hinged to the first segment of the first connecting rod (4a), and the other end of the first connecting rod is hinged to the first segment of the second connecting rod (4b). And / or, the second segments of the first connecting rod (4a) and the second connecting rod (4b) are connected by a second connecting rod (5). One end of the second connecting rod (5) is hinged to the second segment of the first connecting rod (4a), and the other end of the second connecting rod (5) is hinged to the second segment of the second connecting rod (4b).

7. The dual-valve linkage mixing device according to claim 1, 2, 4, or 6, characterized in that: A flow equalization plate (6) is provided at the valve outlet (103) for equalizing the flow of fluid at the valve outlet (103).

8. The dual-valve linkage mixing device according to claim 7, characterized in that: The flow equalization plate (6) is provided with a plurality of uniformly distributed through holes (61) to equalize the flow of fluid at the valve outlet (103) through each through hole (61).

9. An aircraft fluid system, characterized in that: The dual-valve linkage mixing device includes any one of claims 1-8.

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