Water control one-way valve and gas generator

Abstract

The utility model discloses a water control one-way valve and a gas generator, and relates to the technical field of one-way valves, the water control one-way valve comprises a valve body, a valve plate and a water-sensitive positioning mechanism; a cavity is formed in the valve body, and a water inlet hole communicated with the cavity is formed in the valve body; the valve plate is arranged in the cavity and is connected with the spring; the water-sensitive positioning mechanism is used for compressing the spring, and after the water-sensitive positioning mechanism is dissolved in water, the valve plate abuts against and seals the water inlet hole under the action of the spring. The device is particularly suitable for the field of drowning rescue (such as drowning rescue of an unmanned aerial vehicle).

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically a water-controlled one-way valve and a gas generator. Background Technology

[0002] A check valve is a valve that allows fluid to flow only through the inlet, but prevents the medium from flowing back through the outlet. Most existing check valves are manually controlled, hydraulically controlled, electromagnetically controlled, or mechanically controlled. These methods are complex and unsuitable for water rescue operations (e.g., drone-based 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 water-controlled one-way valve and a gas generator, which are 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 water-controlled one-way valve, including a valve body, a valve plate, and a water-sensitive positioning mechanism; the valve body has a cavity inside and a water inlet hole communicating with the cavity; the valve plate is disposed in the cavity and connected to a spring; the water-sensitive positioning mechanism is used to compress the spring, and when the water-sensitive positioning mechanism dissolves in water, the valve plate resists and closes the water inlet hole under the action of the spring.

[0005] A further improvement is that the water-sensitive positioning mechanism includes a connector, which is a rod-shaped or cable-shaped structure made of water-sensitive material. One end of the connector is connected to the valve body, and the other end of the connector extends into the cavity and connects to the valve plate. When the connector dissolves in water, the valve plate is held in place and closes the water inlet under the action of the spring.

[0006] A further improvement is that the water-sensitive positioning mechanism includes a connector and a water-sensitive element. One end of the connector is connected to the water-sensitive element, and the other end of the connector extends into the cavity and is connected to the valve plate. When the water-sensitive element dissolves in water, the connector loses its resistance, and the valve plate, under the action of the spring, holds and closes the water inlet.

[0007] A further improvement is that the connector is made of rigid or flexible material, and the water-sensitive element is a water-sensitive tape or a water-sensitive rubber ring, which is firmly wrapped around the outer end of the connector and abuts against the outer wall of the valve body.

[0008] A further improvement is that the connector is made of a rigid material and a stop bar is provided on the outer end of the connector; the water-sensitive element is a capsule-shaped structure made of water-sensitive material, and the water-sensitive element is connected to the stop bar and abuts against the outer wall of the valve body.

[0009] A further improvement is that the connector is made of a rigid or flexible material, and a hook is provided on the outer end of the connector; the water-sensitive element is a rod-shaped structure made of water-sensitive material, which is held against the outer wall of the valve body, and the connector is connected to the water-sensitive element through the hook.

[0010] A further improvement is that an elastic locking plate is provided on the inner wall of the valve body near the bottom. When the valve plate is held against and closes the water inlet hole by the action of the spring, the elastic locking plate is used to lock the valve plate.

[0011] Further improvements include: a water inlet hole is provided at the bottom of the valve body, and a through hole is provided at the top of the valve body for the connecting parts to pass through; both the front and rear sides of the valve body are open structures.

[0012] A further improvement is that a limit groove is provided on the inner top wall of the valve body, one end of the spring is connected to the limit groove, and the other end of the spring is connected to the valve plate.

[0013] This utility model also provides a gas generator, including a hollow shell, with a medicine bag inside the shell that generates gas upon contact with water, and the shell is equipped with a water-controlled one-way valve as described above.

[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 water is introduced, water enters through the inlet, the water-sensitive element dissolves in the water, the rod loses resistance, and under the action of the spring, the valve plate connected to the rod moves towards the water inlet, opening the elastic locking plate and sealing the water inlet. At the same time, the valve plate is fixed by the locking plate, preventing water from entering through the one-way valve. This invention is particularly suitable for water rescue applications (such as drone water rescue). Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the water-controlled one-way valve in this utility model;

[0017] Figure 2 This is a schematic diagram of the water-controlled check valve in Embodiment 1 of this utility model;

[0018] Figure 3 for Figure 2 Perspective view;

[0019] Figure 4 for Figure 2 A schematic diagram of the structure after the middle valve plate is closed;

[0020] Figure 5 for Figure 4 Perspective view;

[0021] Figure 6 This is a schematic diagram of the structure of the water-sensitive element and the connector in Embodiment 1 of this utility model;

[0022] Figure 7 This is a schematic diagram of the water-controlled check valve in Embodiment 2 of this utility model;

[0023] Figure 8 for Figure 7 Perspective view;

[0024] Figure 9 for Figure 7 A schematic diagram of the structure after the middle valve plate is closed;

[0025] Figure 10 for Figure 9 Perspective view;

[0026] Figure 11 This is a schematic diagram of the structure of the water-sensitive element and the connector in Embodiment 2 of this utility model;

[0027] Figure 12 This is a schematic diagram of the structure of the water-sensitive element and the connector in Embodiment 3 of this utility model;

[0028] Figure 13 This is a schematic diagram of the gas generator in this utility model;

[0029] Figure 14 for Figure 3 Perspective view.

[0030] Figure label:

[0031] 1-Valve body; 11-Cavity; 12-Water inlet; 13-Through hole; 14-Limit groove; 15-Sealing ring;

[0032] 2-Valve plate;

[0033] 3-Spring;

[0034] 4-Connector; 41-Stop lever; 42-Hook;

[0035] 5-Water-sensitive element;

[0036] 6-Elastic locking piece; 61-Guide surface;

[0037] 7-Shell. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] See Figure 1 As shown, this utility model provides a water-controlled one-way valve, including a valve body 1, a valve plate 2, and a water-sensitive positioning mechanism; the valve body 1 has a cavity 11 inside, and the valve body 1 has a water inlet hole 12 communicating with the cavity 11; the valve plate 2 is disposed in the cavity 11 and connected to a spring 3; the water-sensitive positioning mechanism is used to compress the spring 3, and when the water-sensitive positioning mechanism dissolves in water, the valve plate 2 resists and closes the water inlet hole 12 under the action of the spring 3.

[0042] Specifically, the water-sensitive positioning mechanism includes a connector 4, which is a rod-shaped or cable-shaped structure made of water-sensitive material. One end of the connector 4 is connected to the valve body 1, and the other end of the connector 4 extends into the cavity 11 and is connected to the valve plate 2. When the connector 4 dissolves in water, the valve plate 2 is held and sealed by the spring 3.

[0043] Preferably, the water-sensitive positioning mechanism includes a connector 4 (made of a non-water-sensitive material) and a water-sensitive element 5. One end of the connector 4 is connected to the water-sensitive element 5 (e.g., polyvinyl alcohol (PVA), sodium carboxymethyl cellulose (CMC), starch, gelatin), and the other end of the connector 4 extends into the cavity 11 and is connected to the valve plate 2. When the water-sensitive element 5 dissolves in water, the connector 4 loses its resistance, and the valve plate 2, under the action of the spring 3, abuts against and seals the water inlet 12.

[0044] The valve body 1 has an internal cavity 11 and a water inlet 12 communicating with the cavity 11. Specifically, the bottom of the valve body 1 has a water inlet 12, and the top of the valve body 1 has a through hole 13 for the connector 4 to pass through. Both the front and rear sides of the valve body 1 are open structures. A sealing ring 15 is provided at the water inlet 12 of the valve body 1.

[0045] The valve plate 2 is disposed in the cavity 11 and connected to the spring 3; specifically, the inner top wall of the valve body 1 is provided with a limit groove 14, one end of the spring 3 is connected to the limit groove 14, and the other end of the spring 3 is connected to the valve plate 2.

[0046] Specifically, an elastic locking plate 6 is provided on the inner wall of the valve body 1 near the bottom. When the valve plate 2 is held against and closes the water inlet hole 12 by the action of the spring 3, the elastic locking plate 6 is used to lock the valve plate 2. The elastic locking plate 6 is provided with a guide surface 61.

[0047] See Figure 13 and Figure 14 As shown, this utility model also provides a gas generator, including a hollow shell 7. Inside the shell 7 is a chemical packet that generates gas upon contact with water. The chemical packet consists of sodium bicarbonate, sodium citrate, and a packaging bag for the chemical agent. The packaging bag is made of a water-permeable material. Alternatively, the aforementioned water-soluble packaging material can be made into a film and wrapped around the chemical agent. The shell 7 is equipped with a water-controlled one-way valve as described above.

[0048] The present invention will be further described below through several embodiments.

[0049] Example 1

[0050] See Figures 2-5 As shown, this utility model embodiment provides a water-controlled one-way valve, including a valve body 1, a valve plate 2, and a connecting member 4;

[0051] The valve body 1 has an internal cavity 11 and a water inlet 12 communicating with the cavity 11. Specifically, the bottom of the valve body 1 has a water inlet 12, and the top of the valve body 1 has a through hole 13 for the connector 4 to pass through. Both the front and rear sides of the valve body 1 are open structures. A sealing ring 15 is provided at the water inlet 12 of the valve body 1.

[0052] The valve plate 2 is disposed in the cavity 11 and connected to the spring 3; specifically, the inner top wall of the valve body 1 is provided with a limit groove 14, one end of the spring 3 is connected to the limit groove 14, and the other end of the spring 3 is connected to the valve plate 2.

[0053] One end of the connector 4 is connected to the water-sensitive element 5, and the other end of the connector 4 extends into the cavity 11 and is connected to the valve plate 2.

[0054] When the water-sensitive element 5 dissolves in water, the connector 4 loses its resistance, and the valve plate 2, under the action of the spring 3, holds and seals the water inlet hole 12.

[0055] Specifically, an elastic locking plate 6 is provided on the inner wall of the valve body 1 near the bottom. When the valve plate 2 is held against and closes the water inlet hole 12 by the action of the spring 3, the elastic locking plate 6 is used to lock the valve plate 2. The elastic locking plate 6 is provided with a guide surface 61.

[0056] See Figure 6 As shown, the connector 4 is made of rigid material (connecting rod) or flexible material (pull rope), and the water-sensitive element 5 is water-sensitive tape, which is wrapped around the outer end of the connector 4 and abuts against the outer wall of the valve body 1.

[0057] Normally, the spring is compressed and the inlet is open. Once water is introduced, it enters through the inlet, the water-sensitive element dissolves in the water, the rod loses resistance, and under the action of the spring, the valve plate connected to the rod moves towards the inlet, opening the elastic locking plate and closing the inlet. At the same time, the valve plate is fixed by the locking plate, and water can no longer enter through the one-way valve.

[0058] Example 2

[0059] See Figures 7-11 As shown, the structure of this embodiment is basically the same as that of embodiment one. The only difference is that in this embodiment, the connector 4 is made of rigid material (connecting rod), and a stop bar 41 is provided on the outer end of the connector 4; the water-sensitive element 5 is a capsule-shaped structure made of water-sensitive material, and the water-sensitive element 5 is connected to the stop bar 41 and abuts against the outer wall of the valve body 1.

[0060] Normally, the spring is compressed and the inlet is open. Once water is introduced, it enters through the inlet, the water-sensitive element dissolves in the water, the rod loses resistance, and under the action of the spring, the valve plate connected to the rod moves towards the inlet, opening the elastic locking plate and closing the inlet. At the same time, the valve plate is fixed by the locking plate, and water can no longer enter through the one-way valve.

[0061] Example 3

[0062] See Figure 12 As shown, the structure of this embodiment is basically the same as that of embodiment one. The only difference is that in this embodiment, the connector 4 is made of rigid material (connecting rod) or flexible material (pull rope), and the outer end of the connector 4 is provided with a hook 42; the water-sensitive element 5 is a rod-shaped structure made of water-sensitive material. The water-sensitive element 5 abuts against the outer wall of the valve body 1, and the connector 4 is connected to the water-sensitive element 5 through the hook 42.

[0063] Normally, the spring is compressed and the inlet is open. Once water is introduced, it enters through the inlet, the water-sensitive element dissolves in the water, the rod loses resistance, and under the action of the spring, the valve plate connected to the rod moves towards the inlet, opening the elastic locking plate and closing the inlet. At the same time, the valve plate is fixed by the locking plate, and water can no longer enter through the one-way valve.

[0064] Example 4

[0065] The structure of this embodiment is basically the same as that of Embodiment 1, except that in this embodiment, the water-sensitive positioning mechanism includes a connector 4, which is a rod-shaped or cable-shaped structure made of water-sensitive material. One end of the connector 4 is bonded to the valve body 1, and the other end of the connector 4 extends into the cavity 11 and connects to the valve plate 2. When the connector 4 dissolves in water, the valve plate 2 is held in place and closes the water inlet hole 12 under the action of the spring 3. This structure can further reduce the weight.

[0066] 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.

[0067] 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 water-controlled one-way valve, comprising a valve body (1), characterized in that: It also includes a valve plate (2) and a water-sensitive positioning mechanism; The valve body (1) has a cavity (11) inside, and the valve body (1) has a water inlet (12) communicating with the cavity (11); The valve plate (2) is disposed in the cavity (11) and connected to the spring (3); The water-sensitive positioning mechanism is used to compress the spring (3). When the water-sensitive positioning mechanism dissolves in water, the valve plate (2) is held against and closes the water inlet hole (12) by the action of the spring (3).

2. The water-controlled check valve according to claim 1, characterized in that: The water-sensitive positioning mechanism includes a connector (4), which is a rod-shaped or cable-shaped structure made of water-sensitive material. One end of the connector (4) is connected to the valve body (1), and the other end of the connector (4) extends into the cavity (11) and is connected to the valve plate (2). When the connector (4) dissolves in water, the valve plate (2) is held against and closes the water inlet hole (12) under the action of the spring (3).

3. The water-controlled check valve according to claim 1, characterized in that: The water-sensitive positioning mechanism includes a connector (4) and a water-sensitive element (5). One end of the connector (4) is connected to the water-sensitive element (5), and the other end of the connector (4) extends into the cavity (11) and is connected to the valve plate (2). When the water-sensitive element (5) dissolves in water, the connector (4) loses its resistance, and the valve plate (2) is held against and closes the water inlet hole (12) under the action of the spring (3).

4. The water-controlled check valve according to claim 3, characterized in that: The connector (4) is made of rigid or flexible material, and the water-sensitive element (5) is a water-sensitive tape or a water-sensitive rubber ring, which is firmly wrapped around the outer end of the connector (4) and abuts against the outer wall of the valve body (1).

5. The water-controlled check valve according to claim 3, characterized in that: The connector (4) is made of rigid material, and a stop bar (41) is provided on the outer end of the connector (4); the water-sensitive element (5) is a capsule-shaped structure made of water-sensitive material, and the water-sensitive element (5) is connected to the stop bar (41) and abuts against the outer wall of the valve body (1).

6. The water-controlled check valve according to claim 3, characterized in that: The connector (4) is made of rigid or flexible material, and a hook (42) is provided on the outer end of the connector (4); the water-sensitive element (5) is a rod-shaped structure made of water-sensitive material, the water-sensitive element (5) abuts against the outer wall of the valve body (1), and the connector (4) is connected to the water-sensitive element (5) through the hook (42).

7. The water-controlled check valve according to claim 1, characterized in that: An elastic locking piece (6) is provided on the inner side wall of the valve body (1) near the bottom. When the valve piece (2) is held against and closes the water inlet hole (12) by the action of the spring (3), the elastic locking piece (6) is used to lock the valve piece (2).

8. The water-controlled check valve according to claim 1, characterized in that: The valve body (1) has a water inlet hole (12) at the bottom and a through hole (13) at the top for the connector (4) to pass through; the front and rear sides of the valve body (1) are open structures.

9. The water-controlled check valve according to claim 1, characterized in that: The inner top wall of the valve body (1) is provided with a limiting groove (14), one end of the spring (3) is connected to the limiting groove (14), and the other end of the spring (3) is connected to the valve plate (2).

10. A gas generator, comprising a hollow shell (7), wherein a drug packet that generates gas upon contact with water is disposed inside the shell (7), characterized in that: The housing (7) is provided with a water-controlled check valve as described in any one of claims 1-9.

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