Butterfly valve structure with manual locking and position indicating functions

Abstract

The utility model discloses a butterfly valve structure with manual locking and position indicating functions. The shell (1) and the rotating shaft (2) are matched and connected through a shaft hole; the shell (1) is connected with the actuator (3) through a screw; the rotating shaft (2) is connected with an output shaft of the actuator (3); the valve plate (4) and the rotating shaft (2) are connected in a matched mode through a shaft hole. The pointer (5) is located at the bottom end of the rotating shaft and connected with the gasket (8) through the screw (7). And the contact pin (6) is connected with the shell (1) through threads. The weight and the occupied space of the butterfly valve needing to be manually controlled can be reduced, the structure is simple, and the reliability is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of butterfly valves for aircraft environmental control systems, and in particular, a butterfly valve structure with manual locking and position indication. Background Technology

[0002] The integrated environmental control system for aircraft is one of the most important systems in an aircraft. The butterfly valve is an important component of the integrated environmental control system for aircraft, used to open or close the gas supply and further control the gas flow, thereby controlling the cabin pressure or temperature.

[0003] Butterfly valves are widely used in aircraft, including in subsystems such as air conditioning and pressure regulation. Some butterfly valves also handle high-temperature, high-pressure gases. Therefore, butterfly valves require high reliability and need a manual locking function in case of aircraft malfunction to facilitate fault dispatch.

[0004] Existing butterfly valve structures often employ a manual locking device added to the actuator, along with a pointer at the end of the housing to indicate the open or closed position. However, to achieve both manual locking and valve plate position indication, two separate parts are designed. The disadvantages of this approach are: the actuator design becomes more complex, resulting in increased size and weight, making it impossible to meet design requirements for weight or size, thus hindering the full reliability of the butterfly valve. Utility Model Content

[0005] The purpose of this invention is to provide a butterfly valve structure with manual locking and position indication. This invention can reduce the weight and space occupation of butterfly valves that require manual control, and its simple structure increases reliability.

[0006] The technical solution of this utility model is: a butterfly valve structure with manual locking and position indication, including a housing, a rotating shaft, an actuator, a valve plate, a pointer, a pin, a screw, and a washer; the housing and the rotating shaft are connected through a shaft hole; the housing and the actuator are connected through a screw; the rotating shaft is connected to the output shaft of the actuator; the valve plate and the rotating shaft are connected through a shaft hole; the pointer is located at the bottom end of the rotating shaft and is connected to the washer through a screw; the pin is connected to the housing through a thread.

[0007] In the aforementioned butterfly valve structure with manual locking device and position indicator, when the actuator output shaft rotates, the rotating shaft, valve plate and pointer will rotate accordingly.

[0008] In the aforementioned butterfly valve structure with manual locking device and position indicator, the bottom boss of the housing and the rotating shaft is marked with the words "open" and "closed" at a position with the axis as the apex angle of 90 degrees; the bottom boss of the housing and the rotating shaft has two locking threaded holes for fixing the pin at a position with the axis as the apex angle of 90 degrees, and they are flush with the markings.

[0009] In the aforementioned butterfly valve structure with manual locking device and position indicator, there is a protruding structure at the edge of the bottom boss position where the housing and the rotating shaft cooperate, which is used to store the pin. One side of the protruding structure is a through hole and the other side is a locking threaded hole.

[0010] In the aforementioned butterfly valve structure with manual locking device and position indicator, the bottom end of the rotating shaft has a threaded hole along the axial position; the pointer is fixed on the rotating shaft by a connection structure of screw, washer and threaded hole.

[0011] In the aforementioned butterfly valve structure with manual locking device and position indicator, the bottom end of the rotating shaft has a polygonal boss that matches the polygonal groove of the pointer; the pointer structure has a through hole; one end of the pin is a screw structure. When it is necessary to manually lock the valve, the pin is removed from the housing protrusion, and the pin is passed through the through hole on the pointer and fixed in the locking threaded hole of the bottom boss of the housing that matches the rotating shaft.

[0012] The advantages of this utility model are: 1. Through this structure, the butterfly valve can indicate the valve plate position while in operation, and simultaneously realize the manual locking of the valve plate in the closed or open position to open or close the gas.

[0013] 2. By setting a protruding device on the housing, the pins are made easy to store or retrieve.

[0014] 3. This structure reduces the weight and space occupied by manually controlled butterfly valves, and its simple structure increases reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a butterfly valve structure with manual locking and position indication according to the present invention.

[0016] Figure 2 This is a schematic diagram of the bottom boss of the housing of a butterfly valve structure with manual locking and position indication according to the present invention.

[0017] Figure 3 This is a schematic diagram of the top boss of the rotating shaft of a butterfly valve structure with manual locking and position indication according to the present invention.

[0018] Figure 4 This is a schematic diagram of a butterfly valve structure pointer with manual locking and position indication according to the present invention.

[0019] In the diagram: 1-housing, 2-shaft, 3-actuator, 4-valve plate; 5-pointer; 6-pin, 7-screw, 8-washer. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0021] Example 1. A butterfly valve structure with manual locking and position indication, such as... Figure 1-4 As shown, it includes a housing, actuator, shaft, valve plate, pointer, pin, screw, and washer. Figure 1 As shown, it includes: housing 1, rotating shaft 2, actuator 3, valve plate 4, pointer 5, pin 6, screw 7, and washer 8, wherein:

[0022] The housing 1 is connected to the rotating shaft 2 through a shaft hole; the housing 1 is connected to the actuator 3 through a screw; the rotating shaft 2 is connected to the output shaft of the actuator 3; the valve plate 4 is connected to the rotating shaft 2 through a shaft hole; the pointer 5 is located at the top of the rotating shaft and is connected to the washer 8 through a screw 7; the pin 6 is connected to the housing 1 through a thread.

[0023] Preferably, when the output shaft of the actuator 3 rotates, the rotating shaft 2, valve plate 4 and pointer 5 that are driven in conjunction with it will rotate accordingly, and the pointer 5 indicates the position of the valve plate 4.

[0024] Preferably, the bottom boss of the housing 1 that mates with the rotating shaft 2 is marked with the words "open" and "closed" at a position 90 degrees from the axis; the bottom boss of the housing 1 that mates with the rotating shaft 2 has two locking threaded holes for fixing the pin 6 at a position 90 degrees from the axis, and these holes are flush with the markings.

[0025] Preferred, such as Figure 2 As shown, at the edge of the bottom boss position where the housing 1 mates with the rotating shaft 2, there is a protruding structure for storing the pin. One side of the protruding structure is a through hole, and the other side is a locking threaded hole.

[0026] Preferably, the top of the rotating shaft 2 has a threaded hole along the axis; the pointer 5 is connected to the rotating shaft 2 through the threaded hole via the screw 7 and the washer 8.

[0027] Preferred, such as Figure 3 As shown, the bottom end of the rotating shaft 2 has a polygonal boss that mates with the polygonal groove of the pointer 5; as Figure 4 As shown, pointer 5 has a symmetrical or asymmetrical structure and has a through hole; one end of pin 6 is a screw structure. When it is necessary to manually lock the valve, pin 6 is removed from the protrusion of housing 1, and pin 6 is passed through the through hole on pointer 5 and fixed in the locking threaded hole of the bottom boss of housing 1 that cooperates with the rotating shaft 2.

Claims

1. A butterfly valve structure with manual locking and position indication, characterized in that, The device includes a housing (1), a rotating shaft (2), an actuator (3), a valve plate (4), a pointer (5), a pin (6), a screw (7), and a washer (8). The housing (1) and the rotating shaft (2) are connected by a shaft hole. The housing (1) and the actuator (3) are connected by a screw. The rotating shaft (2) is connected to the output shaft of the actuator (3). The valve plate (4) and the rotating shaft (2) are connected by a shaft hole. The pointer (5) is located at the bottom of the rotating shaft and is connected to the washer (8) by a screw (7). The pin (6) is connected to the housing (1) by a thread.

2. The butterfly valve structure with manual locking and position indication according to claim 1, characterized in that, When the output shaft of the actuator (3) rotates, the rotating shaft (2), the valve plate (4) and the pointer (5) will rotate accordingly.

3. The butterfly valve structure with manual locking and position indication according to claim 1, characterized in that, The bottom boss of the housing (1) that mates with the rotating shaft (2) is marked with the words "open" and "closed" at a position 90 degrees from the axis. The bottom boss of the housing (1) that mates with the rotating shaft (2) has two locking threaded holes for fixing the pin (6) at a position 90 degrees from the axis, and these holes are flush with the markings.

4. The butterfly valve structure with manual locking and position indication according to claim 1, characterized in that, The bottom boss of the housing (1) that mates with the rotating shaft (2) has a protruding structure for storing the pin. One side of the protruding structure is a through hole and the other side is a locking threaded hole.

5. The butterfly valve structure with manual locking and position indication according to claim 1, characterized in that, The bottom end of the rotating shaft (2) has a threaded hole along the axis; the pointer (5) is fixed on the rotating shaft (2) by a connection structure of screw (7), washer (8) and threaded hole.

6. The butterfly valve structure with manual locking and position indication according to claim 1, characterized in that, The bottom end of the rotating shaft (2) has a polygonal boss that matches the polygonal groove of the pointer (5); the pointer (5) has a through hole; one end of the pin (6) is a screw structure. When the valve needs to be manually locked, the pin (6) is removed from the protrusion of the housing (1), and the pin (6) is passed through the through hole on the pointer (5) and fixed in the locking threaded hole of the bottom boss of the housing (1) that matches the rotating shaft (2).

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