A high-pressure rapid solenoid valve

Abstract

The present invention discloses a high-pressure rapid electromagnetic valve, comprising a valve body, an airway push rod, an electromagnetic coil, a sealing plug, and a spring; the hollow part of the valve body is used as an airway, the open end of the valve body is fixedly connected to the gas tank, the closed end of the valve body is fixedly connected to the air inlet pipe of the launch tube, the closed end of the valve body is provided with an air outlet, and the sealing plug is used to seal the air outlet; the airway push rod is located in the airway, and the front end is fixedly connected to the sealing plug, and the rear end of the airway push rod is provided with a limit block; the spring is sleeved on the outside of the airway push rod and limited between the closed end of the valve body and the limit block; the electromagnetic coil is arranged in the airway and located in the rear section of the airway; the electromagnetic coil is energized to generate electromagnetic force to push the airway push rod and drive the sealing plug to separate from the air outlet, and the high-pressure gas in the gas tank enters the launch tube pipeline, and the high-pressure gas is discharged to drive the front end of the airway push rod to extend out of the air outlet, the spring is compressed, and the spring is restored after the discharge is completed to push the airway push rod to reset and drive the sealing plug to reset. The present invention has a fast opening speed and a small volume, and can be built into the launch tube to reduce the volume of the launch device.

Description

Technical Field

[0001] The invention relates to the technical field of solenoid valves, and in particular to a high-pressure fast solenoid valve. Background Art

[0002] At present, the common take-off methods for small and medium-sized drones are: taxiing take-off, rubber band catapult take-off, vertical take-off, and rocket-assisted take-off. Taxiing take-off: requires a runway of at least 3 meters wide and 200-500 meters long, and there is no obstruction in the air. The take-off conditions have high requirements for the site and the take-off method is limited; rubber band catapult take-off: requires carrying a bulky catapult, which is inconvenient to carry and takes a long time to arrange on site; vertical take-off: is a relatively convenient take-off method, but it is only limited to VTOL models; rocket-assisted take-off: belongs to a characteristic aircraft and requires relevant qualifications and a specific flight site.

[0003] Therefore, another new type of circular tube launch and takeoff device is developed. This takeoff device requires the wings of the aircraft to be folded and stuffed into the tube, and the aircraft is pushed out by high-pressure air to help it reach the takeoff speed, and the wings automatically unfold and take off. A fast high-pressure electromagnetic valve is needed, and the electromagnetic valves currently on the market are all electromagnetic valves for water pipes. The current valves are large in size, the air pressure that can be opened by the caliber is small, and the air outlet of the electromagnetic valve that can open high pressure is small, which cannot meet the design requirements of the launch tube.

[0004] The existing solenoid valve is a pilot valve, and its working principle is: when the power is on, the valve stem is lifted by electromagnetic force, and the pilot valve port is opened. At this time, the upper chamber of the solenoid valve is depressurized through the pilot hole, and a pressure difference is formed around the main valve core, and the gas pressure pushes the main valve core upward to open the main valve port under the action of the pressure difference; when the power is off, under the action of the spring force and the gravity of the main valve core, the valve stem is reset, the pilot hole is closed, the main valve core moves downward, and the main valve port is closed. The defects are: 1. The volume is large, the weight is large, and the electromagnetic coil protrudes on the valve body, which makes the solenoid valve unable to be inserted into the launch tube; 2. The volume of the large-caliber electromagnetic valve will continue to increase, and the maximum air pressure that can be opened can only reach 1.5MPA, which cannot meet the air pressure requirement of 0.5-8MPA. Summary of the invention

[0005] In view of this, the present invention provides a high-pressure fast solenoid valve with a fast opening speed, an opening pressure of 0.5-8MPA, and an air outlet diameter of 1-2 inches, which meets the design requirements of the launch tube.

[0006] The present invention is realized by the following technical scheme: a high-pressure fast solenoid valve, comprising a valve body, an airway push rod, an electromagnetic coil, a sealing plug, and a spring; the valve body is hollow with an open front end and a closed rear end, the hollow part of the valve body is used as an airway, the open end of the valve body is fixedly connected to the gas tank, the closed end of the valve body is fixedly connected to the air inlet pipe of the launch tube, the closed end of the valve body is provided with an air outlet, and the sealing plug is used to seal the air outlet; the airway push rod is located in the airway, and the front end is fixedly connected to the sealing plug, and the rear end of the airway push rod is provided with a limit block; the spring is sleeved on the outside of the airway push rod and is connected to the airway push rod. The limit is between the closed end of the valve body and the limit block; the electromagnetic coil is arranged in the airway and located in the rear section of the airway. The rear end of the airway push rod does not contact the front end section of the electromagnetic coil. The valve body, airway push rod and electromagnetic coil are coaxial; the electromagnetic coil is energized to generate electromagnetic force to push the airway push rod and drive the sealing plug to separate from the air outlet. The high-pressure gas in the gas tank enters the launch tube pipeline. The discharge of high-pressure gas drives the front end of the airway push rod to extend out of the air outlet. During the process, the spring is compressed, and the gas tank is discharged. The spring recovers to push the airway push rod to reset and drive the sealing plug to reset.

[0007] Furthermore, the air outlet is conical, the sealing plug is a conical body matching the cross section of the air outlet, and the small-diameter end of the sealing plug is fixedly connected to the airway push rod.

[0008] Furthermore, the limit block is a conical structure, the small diameter end of the limit block is at the front, and the limit block is evenly provided with a plurality of through grooves along the axis of the airway push rod.

[0009] Furthermore, the electromagnetic coil is wound on a cylindrical structure, and the cylindrical structure is coaxially limited inside the valve body through a connecting block.

[0010] Furthermore, both ends of the valve body are provided with external threads, which are respectively threadedly connected to the gas tank and the launch tube air intake pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The electromagnetic coil of the present invention is directly connected to the airway inside the valve body and has a small volume. Compared with ordinary electromagnetic valves, the diameter of the air outlet is larger under the same volume, which can reach 1-2 inches, meeting the design requirements of the launch tube and can be built into the launch tube, thereby reducing the volume of the launch device and improving portability.

[0013] 2. The air outlet of the present invention is conical, and the sealing plug is a conical body that matches the cross section of the air outlet, which not only meets the airtightness requirements but also facilitates the airway push rod to push the sealing plug out of the air outlet under the push of electromagnetic force.

[0014] 3. The limit block of the present invention is a conical structure with a through groove, which can limit the spring on the airway top rod without hindering the flow of gas in the airway. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the general assembly of the present invention.

[0016] Among them, 1-valve body, 2-sealing plug, 3-limit block, 4-electromagnetic coil, 5-power connection, 6-airway push rod. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] The present invention provides a high-pressure rapid solenoid valve, such as Figure 1 As shown, the solenoid valve includes a columnar valve body 1, an airway push rod 6, an electromagnetic coil 4, a sealing plug 2, and a spring; the valve body 1 is hollow with an open front end and a closed rear end, the hollow part of the valve body 1 serves as an airway, the open end of the valve body 1 is fixedly connected to the gas tank, and the closed end of the valve body 1 is fixedly connected to the air intake pipe of the launch tube. Specifically, external threads are provided at both ends of the valve body 1, which are threadedly connected to the gas tank and the air intake pipe of the launch tube, respectively; an air outlet is provided at the closed end of the valve body 1, and the sealing plug 2 is used to seal the air outlet.

[0019] The airway push rod 6 is located in the airway, and the front end is fixedly connected to the sealing plug 2, and a limit block 3 is provided at the rear end of the airway push rod 6; the spring is sleeved on the outside of the airway push rod 6 and limited between the closed end of the valve body 1 and the limit block 3; the electromagnetic coil 4 is arranged in the airway and located in the rear section of the airway, the rear end of the airway push rod 6 does not contact the front end cross section of the electromagnetic coil 4, and the valve body 1, the airway push rod 6, and the electromagnetic coil 4 are coaxial.

[0020] After the electromagnetic coil 4 is energized through the power connection 5, an electromagnetic force is generated to push the airway push rod 6 and drive the sealing plug 2 to separate from the air outlet. The high-pressure gas in the gas tank enters the launch tube pipeline. The discharge of the high-pressure gas drives the front end of the airway push rod 6 to extend out of the air outlet. During the whole process, the spring is continuously compressed. After the gas tank is discharged, the spring rebound restoring force pushes the airway push rod 6 to reset and drives the sealing plug 2 to reset.

[0021] In this embodiment, the magnetic pole at the rear end of the airway push rod 6 is the same as the magnetic pole at the front end of the electromagnetic coil 4 after power is turned on, that is, after power is turned on, the rear end of the airway push rod 6 repels the front end of the electromagnetic coil 4, and the airway push rod 6 moves forward under the push of the electromagnetic force.

[0022] As an improvement, the gas outlet is conical, the sealing plug 2 is a conical body that matches the cross section of the gas outlet, and the small-diameter end of the sealing plug 2 is fixedly connected to the airway push rod 6. Under the push of electromagnetic force, the airway push rod 6 pushes open the sealing plug 2. Since the sealing plug 2 is a conical body, it can be connected with the launch tube pipeline without completely pushing out the sealing plug 2 from the inside of the valve body. The high-pressure gas in the gas tank rushes out of the valve body 1, and the auxiliary push rod 6 further pushes the sealing plug 2. The sealing plug 2 is completely separated from the air inlet. After the high-pressure gas is discharged, the sealing plug 2 is reset under the push of the spring rebound force. The conical sealing plug 2 prevents it from entering the inside of the valve body 1, realizing the one-way sealing of the sealing plug 2, that is, the sealing plug 2 can be pushed out of the valve body 1 from the inside to the outside, but cannot be pushed into the inside of the valve body 1 from the outside to the inside.

[0023] The limit block 3 is a conical structure, with the small diameter end of the limit block 3 at the front and a number of through grooves evenly arranged along the axis of the airway push rod 6, which can limit the spring on the airway push rod 6 without hindering the flow of gas in the airway.

[0024] The valve body 1 can be a cylindrical structure, and the electromagnetic coil 4 is wound on the cylindrical structure, and the cylindrical structure is coaxially limited inside the valve body 1 through a connecting block. The electromagnetic coil 4 is placed inside the valve body 1, and the electromagnetic coil 4 is directly connected to the airway inside the valve body 1. The overall volume of the electromagnetic valve is small. Compared with the existing electromagnetic valves of the same volume, the diameter of the air outlet can be larger, and the opening pressure can be adjusted by adjusting the diameter of the air outlet. The diameter of the air outlet can be 1-2 inches, and the opening pressure can be as high as 8MPA.

[0025] The working principle of the present invention is as follows: when the electromagnetic coil 4 is energized, the electromagnetic force pushes the airway push rod 6, which pushes open the conical one-way sealing plug 2, and the high-pressure air in the gas tank rushes out of the valve body 1, and the auxiliary airway push rod 6 further pushes the sealing plug 2, and the sealing plug 2 is separated from the air outlet as a whole, completing the instantaneous discharge of high-pressure air. After the high-pressure air is discharged, the valve body 1 returns to normal atmospheric pressure, and the spring returns to push the sealing plug 2 to its original position for sealing.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-pressure fast solenoid valve, characterized in that: It includes a valve body, an airway push rod, an electromagnetic coil, a sealing plug, and a spring; the valve body is hollow with an open front end and a closed rear end, the hollow part of the valve body serves as an airway, the open end of the valve body is fixedly connected to the gas tank, the closed end of the valve body is fixedly connected to the air intake pipe of the launch tube, the closed end of the valve body is provided with an air outlet, and the sealing plug is used to seal the air outlet; The airway push rod is located in the airway, and the front end is fixedly connected to the sealing plug, and a limit block is provided at the rear end of the airway push rod; the spring is sleeved on the outside of the airway push rod and limited between the closed end of the valve body and the limit block; the electromagnetic coil is arranged in the airway and located at the rear section of the airway, the rear end of the airway push rod does not contact the front end section of the electromagnetic coil, and the valve body, the airway push rod and the electromagnetic coil are coaxial; The electromagnetic coil is energized to generate electromagnetic force to push the airway push rod and drive the sealing plug to separate from the air outlet. The high-pressure gas in the gas tank enters the launch tube pipe. The discharge of high-pressure gas drives the front end of the airway push rod to extend out of the air outlet. During the process, the spring is compressed. After the gas tank is discharged, the spring recovers to push the airway push rod to reset and drive the sealing plug to reset.

2. The high-pressure rapid solenoid valve according to claim 1, characterized in that: The air outlet is conical, the sealing plug is a conical body matched with the cross section of the air outlet, and the small-diameter end of the sealing plug is fixedly connected with the airway push rod.

3. The high-pressure rapid solenoid valve according to claim 1, characterized in that: The limiting block is a conical structure, the small diameter end of the limiting block is at the front, and the limiting block is evenly provided with a plurality of penetrating grooves along the axis of the airway push rod.

4. The high-pressure rapid solenoid valve according to claim 1, characterized in that: The electromagnetic coil is wound on a cylindrical structure, and the cylindrical structure is coaxially limited inside the valve body through a connecting block.

5. The high-pressure rapid solenoid valve according to any one of claims 1 to 4, characterized in that: Both ends of the valve body are provided with external threads, which are respectively threadedly connected to the gas tank and the launch tube air intake pipe.

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