Pull rod water control valve and gas generator

Abstract

The utility model discloses a pull rod formula water control valve and gas generator relates to the field of falling into water rescue, and pull rod formula water control valve includes pull rod mechanism, still includes water -sensitive positioning mechanism, pull rod mechanism includes pull rod body, and the lower extreme of pull rod body is provided with the plug, and the spring is provided with the outer cover of pull rod body, water -sensitive positioning mechanism is used for compression spring, when water -sensitive positioning mechanism dissolves after meeting water, and pull rod body is under the action of spring and is resisted and closes the water inlet hole. It is suitable for the field of falling into water rescue (for example unmanned plane falls into water rescue).

Description

Technical Field

[0001] This utility model relates to the field of water rescue, specifically a lever-type water control valve and a gas generator. Background Technology

[0002] A valve is a device that controls the flow of fluid. Most existing valves are manually controlled, hydraulically controlled, electromagnetically controlled, or mechanically controlled. These methods are complex in structure and are not suitable for water rescue applications (such as drone water rescue). Utility Model Content

[0003] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a lever-type water control valve and gas generator, which is suitable for the field of water rescue (such as drone water rescue).

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a lever-type water control valve, including a lever mechanism and a water-sensitive positioning mechanism; the lever mechanism includes a lever body, the lower end of which is provided with a plug, and a spring is sleeved on the lever body; the water-sensitive positioning mechanism is used to compress the spring, and when the water-sensitive positioning mechanism dissolves in water, the lever body resists and seals the water inlet under the action of the spring.

[0005] A further improvement is made in that: the water-sensitive positioning mechanism includes a water-soluble plug and an ear plate, the ear plate being provided with a positioning hole; the water-soluble plug is made of a water-soluble material and is inserted into the corresponding positioning hole; the upper end of the pull rod is provided with a pull ring connected to the water-soluble plug, and when the water-soluble plug dissolves in water, the pull rod is held and sealed by the action of the spring.

[0006] A further improvement is made in that: the water-sensitive positioning mechanism includes a water-soluble ring and an ear plate; the ear plate is provided with a positioning hole; the upper end of the pull rod is provided with a pull ring; the water-soluble ring is made of water-soluble material, and the two ends of the water-soluble ring are respectively connected to the ear plate and the pull ring. When the water-soluble ring dissolves in water, the pull rod is held and sealed by the action of the spring.

[0007] A further improvement is made in that: the water-sensitive positioning mechanism includes a water-soluble rope and an ear plate; the ear plate is provided with a positioning hole; the upper end of the pull rod is provided with a pull ring; the water-soluble rope is made of water-soluble material, and the two ends of the water-soluble rope are respectively connected to the ear plate and the pull ring through connecting rings. When the water-soluble rope dissolves in water, the pull rod is held against and sealed by the action of the spring.

[0008] A further improvement includes two opposing guide blocks, through which the pull rod passes and moves under their guidance. A limiting mechanism is provided at the connection between the pull rod and the plug, with the two ends of the spring abutting against the limiting mechanism and the guide blocks respectively. A sealing ring adapted to the water inlet is provided below the limiting mechanism. The plug is truncated cone-shaped and has channels.

[0009] This utility model also provides a gas generator, including a hollow shell, a medicine bag that generates gas when it comes into contact with water is provided inside the shell, a water inlet is provided on the side wall of the shell, and the shell is provided with a pull rod type water control valve as described above.

[0010] A further improvement is that the inner wall of the housing is provided with several reinforcing plates.

[0011] A further improvement is that an airbag is provided outside the shell, and the airbag is connected to the inside of the shell through an air hole.

[0012] A further improvement is that the airbag is secured by a water-soluble strap.

[0013] A further improvement is that it also includes a fairing for housing the airbag, which is connected to the shell by a water-soluble adhesive.

[0014] The beneficial effects of this utility model are as follows:

[0015] In this invention, the spring is normally compressed, and the water inlet is open. Once submerged in water, water enters through the inlet, the water-sensitive positioning mechanism dissolves in the water, the pull rod loses resistance, the spring releases under elastic force, and the pull rod moves towards the water inlet until the sealing ring blocks the inlet, preventing water from entering further. This invention is particularly suitable for water rescue applications (e.g., drone water rescue). Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pull rod type water control valve in Embodiment 1 of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of a water-soluble thrombus after dissolution;

[0018] Figure 3 This is a schematic diagram of the pull-rod type water control valve in Embodiment 2 of this utility model;

[0019] Figure 4 This is a schematic diagram of the pull rod type water control valve in Embodiment 3 of this utility model;

[0020] Figure 5 This is a schematic diagram of the gas generator in Embodiment 1 of this utility model;

[0021] Figure 6 This is a schematic diagram of the airbag connection in Embodiment 1 of this utility model;

[0022] Figure 7 This is a schematic diagram of the connection of the airbag in Embodiment 2 of this utility model.

[0023] Figure label:

[0024] 1-Pull rod mechanism; 11-Pull rod body; 12-Pull ring; 13-Plug; 14-Groove; 15-Spring; 16-Limiting mechanism; 17-Limiting guide block; 18-Sealing ring;

[0025] 2-Water-sensitive positioning mechanism; 21-Ear plate; 22-Positioning hole; 23-Water-soluble plug; 24-Water-soluble ring; 25-Water-soluble rope; 26-Connecting ring;

[0026] 3-Shell; 31-Water inlet; 32-Reinforcing plate; 33-Airbag; 34-Air vent; 35-Fairing. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0028] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and 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, and 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. They should not be construed as limiting the specific protection scope of this utility model.

[0029] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention. Example 1

[0030] See Figure 1 and Figure 2 As shown, this utility model embodiment provides a lever-type water control valve, including a lever mechanism 1 and a water-sensitive positioning mechanism 2;

[0031] The pull rod mechanism 1 includes a pull rod body 11, with a plug 13 at the lower end of the pull rod body 11, and a spring 15 sleeved on the pull rod body 11. Specifically, it also includes two opposing limiting guide blocks 17, through which the pull rod body 11 passes and moves under the guidance of the limiting guide blocks 17. A limiting mechanism 16 is provided at the connection between the pull rod body 11 and the plug 13, with both ends of the spring 15 abutting against the limiting mechanism 16 and the limiting guide blocks 17 respectively. A sealing ring 18 adapted to the water inlet 31 is provided below the limiting mechanism 16. The plug 13 is truncated cone-shaped and has a channel 14. The channel shape includes, but is not limited to, a cross shape, a circle, and a straight line, to increase the water inlet cross-sectional area and improve the water inlet speed.

[0032] The water-sensitive positioning mechanism 2 is used to compress the spring 15. When the water-sensitive positioning mechanism 2 dissolves in water, the pull rod 11, under the action of the spring 15, abuts against and seals the water inlet 31. Specifically, the water-sensitive positioning mechanism 2 includes a water-soluble plug 23 and two opposing ear plates 21, each ear plate 21 having a positioning hole 22. The water-soluble plug 23 is made of a water-soluble material [e.g., polyvinyl alcohol (PVA), sodium carboxymethyl cellulose (CMC), starch, gelatin], and both ends of the water-soluble plug 23 are respectively installed in the corresponding positioning holes 22. The upper end of the pull rod 11 is provided with a pull ring 12 connected to the water-soluble plug 23. Normally, the hole on the pull ring is aligned with the positioning hole of the ear plate. The water-soluble plug is inserted into the hole and fixed together with the ear plate, pulling the rod to compress the spring and preventing the spring from releasing. When the water-soluble plug 23 dissolves in water, the pull rod 11, under the action of the spring 15, abuts against and seals the water inlet 31.

[0033] Normally, the hole on the pull ring aligns with the positioning hole on the ear plate. The water-soluble plug is inserted into the hole and fixed to the ear plate, pulling the rod to compress the spring and preventing it from releasing. Normally, the spring is compressed, and the water inlet is open. Once water enters, it flows in through the inlet, dissolves the plug, the pull ring loses resistance, and the spring releases under its elastic force. The pull rod moves towards the water inlet until the sealing ring blocks it, preventing further water entry.

[0034] See Figure 5 As shown, this embodiment of the invention also provides a gas generator, including a hollow shell 3. A gas-generating packet is disposed inside the shell 3 upon contact with water. A water inlet 31 is provided on the side wall of the shell 3. The shell 3 is equipped with a lever-type water control valve as described above. Specifically, several reinforcing plates 32 are provided on the inner side wall of the shell 3. Furthermore, longitudinal and / or transverse ribs are added to the outer bottom surface of the shell 3 to form an air duct with the contact surface with the drone, reducing wind resistance, aiding in drone heat dissipation, and strengthening the structural strength of the gas generator.

[0035] See Figure 6As shown, an airbag 33 is provided on the outside of the shell 3, and the airbag 33 is connected to the inside of the shell 3 through an air hole 34. Specifically, the airbag 33 is fixed with water-soluble straps to reduce its area. The airbag is fixed with water-soluble straps to prevent it from loosening (increasing wind resistance and interfering with flight). After landing in water, the water-soluble straps lose their bonding force, the airbag inflates and expands, and the increased buoyancy causes the drone to float. Example 2

[0036] This embodiment has a basically the same structure as Embodiment 1, the difference being:

[0037] See Figure 3 As shown, the water-sensitive positioning mechanism 2 includes a water-soluble ring 24 and an ear plate 21; the ear plate 21 is provided with a positioning hole 22; the upper end of the pull rod body 11 is provided with a pull ring 12; the water-soluble ring 24 is made of water-soluble materials [such as polyvinyl alcohol (PVA), sodium carboxymethyl cellulose (CMC), starch, gelatin], and the two ends of the water-soluble ring 24 are respectively connected to the ear plate 21 and the pull ring 12. When the water-soluble ring 24 dissolves in water, the pull rod body 11 is held and sealed by the spring 15.

[0038] See Figure 7 As shown, the gas generator includes a fairing 35 for housing the airbag 33, which is connected to the housing 3 via a water-soluble adhesive. The fairing protects the airbag and reduces wind resistance. The fairing and gas generator are connected by water-soluble adhesive, and the connection is protected against rain. After falling into water, the water-soluble adhesive softens and loses its bonding strength. The airbag inflates and expands, opening the fairing. The airbag continues to inflate, increasing buoyancy and causing the drone to float. Example 3

[0039] This embodiment has a basically the same structure as Embodiment 1, the difference being:

[0040] See Figure 4 As shown, the water-sensitive positioning mechanism 2 includes a water-soluble rope 25 and an ear plate 21; the ear plate 21 is provided with a positioning hole 22; the upper end of the pull rod body 11 is provided with a pull ring 12; the water-soluble rope 25 is made of water-soluble materials [such as polyvinyl alcohol (PVA), sodium carboxymethyl cellulose (CMC), starch, gelatin], and the two ends of the water-soluble rope 25 are connected to the ear plate 21 and the pull ring 12 respectively through connecting rings 26. When the water-soluble rope 25 dissolves in water, the pull rod body 11 resists and seals the water inlet hole 31 under the action of the spring 15.

[0041] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions made using techniques known in the art based on this utility model all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A lever-type water control valve, comprising a lever mechanism (1), characterized in that: It also includes a water-sensitive positioning mechanism (2); The lever mechanism (1) includes a lever body (11), the lower end of which is provided with a plug (13), and a spring (15) is provided on the outer sleeve of the lever body (11). The water-sensitive positioning mechanism (2) is used to compress the spring (15). When the water-sensitive positioning mechanism (2) dissolves in water, the pull rod (11) resists and seals the water inlet hole (31) under the action of the spring (15).

2. The lever-type water control valve according to claim 1, characterized in that: The water-sensitive positioning mechanism (2) includes a water-soluble plug (23) and an ear plate (21). The ear plate (21) is provided with a positioning hole (22). The water-soluble plug (23) is made of water-soluble material and is inserted into the positioning hole (22). The upper end of the pull rod (11) is provided with a pull ring (12) connected to the water-soluble plug (23). When the water-soluble plug (23) dissolves in water, the pull rod (11) resists and seals the water inlet hole (31) under the action of the spring (15).

3. The lever-type water control valve according to claim 1, characterized in that: The water-sensitive positioning mechanism (2) includes a water-soluble ring (24) and an ear plate (21); the ear plate (21) is provided with a positioning hole (22); the upper end of the pull rod body (11) is provided with a pull ring (12); the water-soluble ring (24) is made of water-soluble material, and the two ends of the water-soluble ring (24) are respectively connected to the ear plate (21) and the pull ring (12). When the water-soluble ring (24) dissolves in water, the pull rod body (11) resists and seals the water inlet hole (31) under the action of the spring (15).

4. The lever-type water control valve according to claim 1, characterized in that: The water-sensitive positioning mechanism (2) includes a water-soluble rope (25) and an ear plate (21); the ear plate (21) is provided with a positioning hole (22); the upper end of the pull rod body (11) is provided with a pull ring (12); the water-soluble rope (25) is made of water-soluble material, and the two ends of the water-soluble rope (25) are respectively connected to the ear plate (21) and the pull ring (12) through connecting rings (26). When the water-soluble rope (25) dissolves in water, the pull rod body (11) resists and seals the water inlet hole (31) under the action of the spring (15).

5. The lever-type water control valve according to claim 1, characterized in that: It also includes two opposing limit guide blocks (17), the pull rod (11) passes between the two limit guide blocks (17) and moves under the guidance of the limit guide blocks (17); a limit mechanism (16) is provided at the connection between the pull rod (11) and the plug (13), and the two ends of the spring (15) abut against the limit mechanism (16) and the limit guide block (17) respectively; a sealing ring (18) adapted to the water inlet hole (31) is provided below the limit mechanism (16); the plug (13) is shaped like a frustum cone and the plug (13) is provided with a channel (14).

6. A gas generator, comprising a hollow shell (3), wherein a gas-generating packet is disposed inside the shell (3) upon contact with water, and a water inlet (31) is provided on the side wall of the shell (3), characterized in that: The housing (3) is provided with a lever-type water control valve as described in any one of claims 1-5.

7. The gas generator according to claim 6, characterized in that: The inner wall of the shell (3) is provided with several reinforcing plates (32).

8. The gas generator according to claim 6, characterized in that: An airbag (33) is provided outside the shell (3), and the airbag (33) is connected to the inside of the shell (3) through an air hole (34).

9. The gas generator according to claim 8, characterized in that: The airbag (33) is secured by a water-soluble strap.

10. The gas generator according to claim 8, characterized in that: It also includes a fairing (35) for housing the airbag (33), which is connected to the housing (3) by a water-soluble adhesive.

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