A flap-type electrically controlled valve device

Abstract

The present application belongs to the field of aviation technology, and relates to a flap type electric control valve device. The device comprises: an upper shell, a lower shell, a first oil path and a second oil path arranged between the upper shell and the lower shell, the first oil path and the second oil path sharing the same inlet and the same outlet; an electromagnetic valve is arranged on the first oil path; a piston is arranged on the first oil path at a position between the inlet and the electromagnetic valve; a valve is arranged on the second oil path; wherein when the electromagnetic valve is powered on, the first oil path is blocked, the piston abuts against the valve, the valve is forced to close, so that the second oil path is blocked; when the electromagnetic valve is not powered on, the first oil path is unblocked, and the valve is pushed open by the oil entering the second oil path under the action of the oil itself, so that the second oil path is unblocked.

Description

Technical Field

[0001] This invention belongs to the field of aviation technology and relates to a flap-type electrically controlled valve device. Background Technology

[0002] Electrically controlled valves are devices that control the flow of fuel in fuel supply systems and are essential accessories in fuel system pipelines. They are used to cut off fuel flowing back to the fuel tank. The flap-type electrically controlled valve device solves the problems of numerous bends and high flow resistance in traditional control valves, while further improving the reliability of the valve's shut-off and closing mechanism. Summary of the Invention

[0003] The purpose of this invention is to provide a flap-type electrically controlled valve device that can solve the problem of high flow resistance due to multiple bends in the flow channel of traditional control valves.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0005] This invention provides a flap-type electrically controlled valve device, characterized in that it includes: an upper housing, a lower housing, a first oil passage and a second oil passage both disposed between the upper housing and the lower housing, the first oil passage and the second oil passage sharing the same inlet and the same outlet; an electromagnetic valve is disposed on the first oil passage; a piston is disposed at a position between the inlet and the electromagnetic valve on the first oil passage; and a valve is disposed on the second oil passage.

[0006] When the electromagnetic valve is energized, the first oil circuit is cut off, the piston presses against the valve, and the valve is forced to close, thereby cutting off the second oil circuit.

[0007] When the electromagnetic valve is not energized, the first oil circuit is unobstructed, and the oil entering the second oil circuit pushes open the valve under its own action, thus making the second oil circuit unobstructed.

[0008] Furthermore, the first oil passage includes an inner cavity, a first passage connecting the inner cavity and the inlet, and a second passage connecting the inner cavity and the outlet. The inner cavity is surrounded by an upper housing and a piston.

[0009] Furthermore, the piston includes: a diaphragm assembly and a push rod; the diaphragm assembly is disposed within the inner cavity, the push rod is fixed on the diaphragm assembly, and the diaphragm assembly is slidable in the direction of the push rod.

[0010] Furthermore, the electromagnetic valve includes: a small valve assembly, an electromagnetic assembly, a valve seat, and a spring; the electromagnetic assembly is fixed to the upper housing, the electromagnetic assembly is connected to the spring through the small valve assembly, and the valve seat is fixed to the lower housing;

[0011] When the electromagnetic component is not energized, the valve seat and the small valve component are not in direct contact. When the electromagnetic component is energized, it pushes the small valve component toward the valve seat while overcoming the spring force, until the small valve component is pushed into the valve seat.

[0012] Furthermore, the electromagnetic component includes an electromagnet and an armature, and the armature pushes the small valve component closer to the valve seat under the magnetic force of the electromagnet.

[0013] Furthermore, one end of the valve is movably connected to the upper housing, and the other end of the valve contacts the lower housing without external force.

[0014] Furthermore, the device also includes a pin that movably connects one end of the upper housing and the valve.

[0015] Furthermore, when the electromagnetic valve is energized, the first oil circuit is cut off. As more oil enters the first oil circuit, the oil pressure in the first oil circuit increases. Under the action of the oil pressure, the piston moves toward the valve until the piston rod blocks the valve, and the oil leaf cannot push the valve open. The valve then cuts off the second oil circuit.

[0016] The technical effects of this invention are:

[0017] 1. The flap-type valve structure adopted meets the requirement of fewer turns in the flow channel. Compared with transmission control valves, it has fewer turns in the flow channel, smoother fluid flow, and greatly reduces flow resistance.

[0018] 2. The pilot-operated electromagnetic valve control system provides higher reliability for valve cutting and closing, reduces product weight, and decreases product dimensions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structural principle of the present invention.

[0020] The components are as follows: 1. Lower housing; 2. Pin; 3. Filter screen; 4. Sealing ring; 5. Upper housing; 6. Screw; 7. Washer; 8. Diaphragm assembly; 9. Screw; 10. Plug; 11. Socket; 12. Straight clamp cable rear accessory; 13. Screw; 14. Washer; 15. Rubber gasket; 16. Connecting seat; 17. Screw; 18. Washer; 19. Rubber gasket; 20. Electromagnet; 21. Sealing ring; 22. Small valve assembly; 23. Spring; 24. Sealing ring; 25. Pin; 26. Valve assembly; 27. Ear seat; 5-1 Valve seat; 28. Top rod. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] like Figure 1 Under normal circumstances, the oil flows into the product through the product inlet. In this state, the small valve assembly 22 is in the open state. The oil flows from the inlet through the abcdef channel formed by the lower housing 1 and the upper housing 5 to the outlet. The oil in the inner cavity (Q cavity) of the diaphragm assembly 8 does not exert any force on the valve assembly 26. The valve assembly 26 opens directly under the action of the oil pressure, and the oil flows to the outlet through AB.

[0023] When it is necessary to cut off the oil flowing back to the tank, the product is energized. Under the action of the electromagnet 20, the small valve assembly 22 overcomes the elastic force of the spring 23 and approaches the valve seat 5-1 of the upper housing 5 (red part in the figure) until the small valve assembly 22 contacts the valve seat 5-1, so that the small valve assembly 22 cuts off the abcdef channel. Since the channel is cut off, the oil accumulates in the inner cavity (Q cavity) formed by the diaphragm assembly 8 and the upper housing 5. The pressure in the Q cavity rises continuously and acts directly on the diaphragm assembly 8, causing the diaphragm assembly 8 to move in the direction of the purple arrow in the figure. Since the diaphragm assembly 8 and the valve assembly 26 are always in a locked state (the contact position is shown by the arrow in the figure), the movement of the diaphragm assembly 8 forces the valve assembly 26 to move in the direction of the red arrow in the figure, and finally the valve assembly 26 contacts the lower housing 1 (the contact position is shown by the arrow in the figure), cutting off the passage between AB and cutting off the oil flowing from the inlet to the outlet.

[0024] The connection relationships between the components and parts of this device are as follows:

[0025] The valve assembly 26 is fixed to the lower housing 1 and is paired with it. The diaphragm assembly 8 is installed between the lower housing 1 and the upper housing 5, forming a pressure-sensing chamber with the upper housing 5. The push rod in the diaphragm assembly 8 contacts the valve assembly 26. After the diaphragm assembly 8 is pressed and moves, it pushes the valve assembly 26 to move through the push rod, eventually making the valve assembly 26 contact the lower housing 1. The small valve assembly 22 is paired with the valve seat 5-1 of the upper housing 5. The small valve assembly 22 is supported by the spring 23 and is in contact with the armature in the electromagnet 20. After being energized, the armature in the electromagnet 20 moves in the direction of the green arrow, pushing the small valve assembly 22 to compress the spring and contact the valve seat 5-1 of the upper housing 5.

Claims

1. A flap-type electrically controlled gate device, characterized in that, include: The upper housing and the lower housing are both provided with a first oil passage and a second oil passage between the upper housing and the lower housing. The first oil passage and the second oil passage share the same inlet and the same outlet. An electromagnetic valve is provided on the first oil passage. A diaphragm device is provided between the inlet and the electromagnetic valve in the first oil line; a valve is provided in the second oil line; the diaphragm device includes: a diaphragm assembly and a push rod; the diaphragm assembly is disposed in the inner cavity, i.e., cavity Q, which is surrounded by an upper housing and the diaphragm device; the push rod is fixed to the diaphragm assembly, and the diaphragm assembly can slide in the direction of the push rod; the electromagnetic valve includes: a small valve assembly, an electromagnetic assembly, a valve seat, and a spring; the electromagnetic assembly is fixed to the upper housing, and the electromagnetic assembly is connected to the spring through the small valve assembly; the valve seat is fixed to the lower housing; When the electromagnetic valve is energized, the first oil circuit is blocked, the diaphragm device presses against the valve, and the valve is forced to close, thereby blocking the second oil circuit; When the electromagnetic valve is not energized, the first oil circuit is unobstructed, and the oil entering the second oil circuit pushes open the valve under its own action, thus making the second oil circuit unobstructed. Under normal circumstances, the oil flows into the product through the product inlet, the small valve assembly is in the open state, and the oil flows from the inlet through the abcdef channel formed by the lower and upper housings to the outlet. The oil in the Q cavity does not exert any force on the valve assembly, and the valve assembly opens directly under the pressure of the oil. The oil flows to the outlet through AB. When it is necessary to cut off the oil flowing back to the tank, the product is energized. Under the action of the electromagnet, the small valve assembly overcomes the spring force and approaches the valve seat of the upper housing until the small valve assembly contacts the valve seat, causing the small valve assembly to cut off the abcdef channels. Since the channels are cut off, the oil accumulates in the Q chamber, and the pressure in the Q chamber rises continuously and acts directly on the diaphragm assembly. Since the diaphragm assembly and the valve assembly are always in a locked state, the diaphragm assembly moves downward, forcing the valve assembly to move, and finally the valve assembly contacts the lower housing, cutting off the oil flowing from the inlet to the outlet.

2. The flap-type electrically controlled gate device according to claim 1, characterized in that, The first oil passage includes a Q cavity, a first passage connecting the Q cavity and the inlet, and a second passage connecting the Q cavity and the outlet.

3. The flap-type electrically controlled gate device according to claim 2, characterized in that, When the electromagnetic component is not energized, the valve seat and the small valve assembly are not in direct contact. When the electromagnetic component is energized, it pushes the small valve assembly toward the valve seat while overcoming the spring force, until the small valve assembly is pushed into the valve seat.

4. The flap-type electrically controlled gate device according to claim 3, characterized in that, The electromagnetic component includes an electromagnet and an armature. Under the magnetic force of the electromagnet, the armature pushes the small valve assembly closer to the valve seat.

5. The flap-type electrically controlled gate device according to claim 1, characterized in that, One end of the valve is movably connected to the upper housing, and the other end of the valve is in contact with the lower housing without external force.

6. The flap-type electrically controlled gate device according to claim 1, characterized in that, The device further includes a pin that movably connects one end of the upper housing and the valve.

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