Airdrop rescue life raft and its water pressure-activated inflation device

Abstract

The present invention relates to an airdrop rescue life raft and a water pressure-induced inflation device thereof, wherein the device is installed on a buoy with an inflation space of the life raft, comprising: a driving disc and a driven disc correspondingly fixed to the outside and inside of the buoy and mutually attached with a snap connection, a locking disc arranged on the outside of the buoy and attached to the side of the driving disc away from the driven disc; a rotating shaft rotatably penetrated through the locking disc, the driving disc and the driven disc; a gas cylinder fixed to the driven disc and arranged inside the buoy, the gas cylinder being provided with gas and the bottle mouth being closed by a diaphragm; the driving disc comprising a driving member fixed to the rotating shaft to drive the rotating shaft to rotate; an accommodating space and a water pressure valve connected to the accommodating space are formed in the locking disc, a water-soluble member that dissolves when in contact with water is fixed in the accommodating space, the water-soluble member is fixed to the locking disc and clamps the rotating shaft to lock the rotating shaft; the driven disc comprises a piercing needle that is opposite to the diaphragm and has a spacing between the diaphragms, the piercing needle is in transmission connection with the rotating shaft, and the rotation of the rotating shaft drives the piercing needle to move and pierce the diaphragm.

Description

Technical Field

[0001] The invention relates to the field of life rafts, in particular to an airdrop rescue life raft and a water pressure-induced inflation device thereof. Background Art

[0002] Life rafts are life-saving facilities and equipment equipped on ships for escaping from dangerous areas or evacuating from distressed ships in emergency situations. Traditional inflatable life rafts need to be inflated by pulling the bow cable. In an emergency, if a life raft is airdropped by a helicopter for rescue, the life raft cannot be inflated and deployed by itself after being dropped into the sea. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide an air-drop rescue life raft and a water pressure-activated inflation device thereof, so as to solve the problem that the inflatable life raft in the prior art cannot be triggered to inflate and expand by itself after being air-dropped into the sea.

[0004] The technical solution to achieve the above purpose is:

[0005] The present invention provides an airdrop rescue life raft, which is installed on a buoy with an inflatable space of the life raft, and the device comprises:

[0006] A driving disc and a driven disc fixed to the outside and inside of the buoy and connected with each other by a buckle, and a locking disc arranged on the outside of the buoy and attached to a side of the driving disc away from the driven disc;

[0007] A rotating shaft rotatably penetrates the locking plate, the driving plate and the driven plate;

[0008] A gas cylinder fixed to the driven disk and arranged inside the buoy, wherein the gas cylinder is filled with gas and the bottle mouth is closed by a diaphragm;

[0009] Wherein, the driving disk includes a driving member fixed to the rotating shaft to drive the rotating shaft to rotate;

[0010] The locking plate is formed with an accommodating space and a water pressure valve connected to the accommodating space, a water-soluble component that dissolves in water is fixed in the accommodating space, the water-soluble component is fixedly connected to the locking plate and clamps the rotating shaft to lock the rotating shaft;

[0011] The water-soluble component is a water-soluble toilet paper disposed in the accommodating space, and the water-soluble toilet paper is fixed to the locking plate and clamps and fixes the rotating shaft;

[0012] The driven disk includes a needle facing the diaphragm and having a space between the needle and the diaphragm, and the needle is in driving connection with the rotating shaft, so that after the hydraulic valve is opened, the water-soluble component dissolves in water to release the lock on the rotating shaft, and the rotating shaft rotates to drive the needle to move to puncture the diaphragm;

[0013] A rack is fixed on the side of the needle;

[0014] A gear meshing with the rack is fixed to the end of the rotating shaft located in the driven plate.

[0015] A further improvement of the airdrop rescue life raft of the present invention is that the driving member is a coil spring embedded in the driving disk and wound into multiple rings, one end of the coil spring is fixed to the driving disk, and the other end is fixed to the rotating shaft.

[0016] A further improvement of the airdrop rescue life raft of the present invention is that the rotating shaft is formed with a bayonet adapted to the coil spring, and the other end of the coil spring is inserted into the bayonet to achieve fixation.

[0017] A further improvement of the airdrop rescue life raft of the present invention is that:

[0018] The buoy is provided with a through hole for the rotating shaft to pass through;

[0019] The connection between the buoy and the driving disc and the driven disc is sealed by a waterproof sealing layer.

[0020] A further improvement of the airdrop rescue life raft of the present invention is that:

[0021] The opposite sides of the driving disk and the driven disk are correspondingly formed with grooves and protrusions, and the grooves and the protrusions are connected by clamping.

[0022] A further improvement of the airdrop rescue life raft of the present invention is that:

[0023] Fixed rubber gaskets are sandwiched between opposite sides of the driving disc and the driven disc to achieve sealing and waterproofing.

[0024] The present invention also provides an airdrop rescue life raft, comprising:

[0025] Foldable raft;

[0026] A buoy connected to the periphery of the raft and having an inflatable space is arranged around the raft;

[0027] The water pressure excitation inflation device installed on the buoy includes:

[0028] A driving disc and a driven disc fixed to the outside and inside of the buoy and connected with each other by a buckle, and a locking disc arranged on the outside of the buoy and attached to a side of the driving disc away from the driven disc;

[0029] A rotating shaft rotatably penetrates the locking plate, the driving plate and the driven plate;

[0030] A gas cylinder fixed to the driven disk and arranged inside the buoy, wherein the gas cylinder is filled with gas and the bottle mouth is closed by a diaphragm;

[0031] Wherein, the driving disk includes a driving member fixed to the rotating shaft to drive the rotating shaft to rotate;

[0032] The locking plate is formed with an accommodating space and a water pressure valve connected to the accommodating space, a water-soluble component that dissolves in water is fixed in the accommodating space, the water-soluble component is fixedly connected to the locking plate and clamps the rotating shaft to lock the rotating shaft;

[0033] The driven disk includes a puncture needle facing the diaphragm and having a distance therebetween. The puncture needle is transmission-connected to the rotating shaft, so that after the water pressure valve is opened, the water-soluble component dissolves in water to release the lock on the rotating shaft, and the rotation of the rotating shaft drives the puncture needle to move to puncture the diaphragm.

[0034] Beneficial effects of the airdrop rescue life raft of the present invention:

[0035] The present invention sets a driving disk, a locking disk, and a driven disk connected through a rotating shaft, and uses a water-soluble part of the locking disk to lock the rotating shaft. A gap is left between the probe and the diaphragm of the gas cylinder before being stimulated. When the water pressure valve is opened, the water-soluble part dissolves, and the rotating shaft rotates under the action of the driving disk, and the probe is driven by the gear rack to move toward the diaphragm to puncture the diaphragm, and the gas cylinder inflates the buoy. The present invention uses water pressure to trigger the inflation of the buoy, thereby solving the problem that the inflatable life raft cannot be automatically triggered to inflate and unfold after being thrown into the sea empty. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a top view of the airdrop rescue life raft of the present invention after being inflated.

[0037] Figure 2 It is a front view of the water pressure-activated inflation device of the present invention.

[0038] Figure 3 The figure is a schematic diagram of the connection between the driving disk and the locking disk of the water pressure-induced inflation device of the present invention.

[0039] Figure 4 for Figure 3 Cross-sectional view in the AA direction.

[0040] Figure 5 for Figure 3 Cross-sectional view along the BB direction before water pressure excitation.

[0041] Figure 6 for Figure 3 Cross-sectional view in the BB direction after water pressure excitation.

[0042] Figure 7The figure is a schematic diagram of the connection between the driven disk and the gas cylinder of the water pressure-activated inflation device of the present invention before water pressure activation.

[0043] Figure 8 for Figure 7 Cross-sectional view along the CC direction.

[0044] Fig. 9 The figure is a schematic diagram of the connection between the driven disk and the gas cylinder of the water pressure excited inflation device of the present invention after water pressure excitation.

[0045] Fig.10 for Fig. 9 Cross-sectional view along the DD direction.

[0046] Fig.11 It is a schematic diagram of the carrying bag of the airdrop rescue life raft of the present invention. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0048] See also Figure 1 , shows a top view of the airdrop rescue life raft of the present invention after inflation. Figure 1 As shown, the airdrop rescue life raft includes: a foldable raft body 10; a buoy 11 connected to the raft body 10 and having an inflatable space; a peripheral floating rope 12 connected to the buoy 11; a platform floating rope 13 fixed to the raft body 10 and a towline 14 fixed to the raft body 10. The life raft in the prior art is generally folded and stored. When it is needed, the towline 14 is pulled to trigger inflation, and the buoy 11 is inflated to make the life raft unfold. After the inflatable life raft is dropped into the sea, it cannot be triggered to inflate and unfold by itself. This triggering method is not suitable for use when the life raft is airdropped by a helicopter.

[0049] In this embodiment, the airdrop rescue life raft is made of polyurethane coated nylon fiber, which is light and durable, making the volume and weight of the life raft smaller than that of an ordinary life raft. Since it is used for airdrop rescue, the people on the life raft do not need to wait for a long time for search and rescue, so the life raft does not need a canopy design and carries less supply equipment. The buoyancy is concentrated on the float 11, and the structure is simplified.

[0050] See also Figure 2 , showing the front view of the water pressure excitation inflation device of the present invention. Figure 1 and Figure 2 As shown, the water pressure-activated inflation device of the present invention is installed on a buoy with an inflation space of a life raft, and is used to trigger the inflation of the buoy 11 by water pressure, thereby solving the problem that the inflatable life raft cannot be triggered to inflate and expand by itself after being thrown into the sea empty.

[0051] The water pressure excitation inflation device 1 of the present invention comprises:

[0052] Corresponding to the driving disc 20 and the driven disc 30 fixed to the outside and inside of the buoy 11 and attached to each other with buckles, a locking disc 40 is arranged outside the buoy 11 and attached to the side of the driving disc 20 away from the driven disc 30;

[0053] A rotating shaft 50 rotatably penetrates the locking plate 40, the driving plate 20 and the driven plate 30;

[0054] A gas cylinder 60 fixed to the driven disk 30 and disposed inside the buoy 11, wherein the gas cylinder 60 is filled with gas and the bottle mouth is closed by a diaphragm;

[0055] The driving disk 20 includes a driving member 21 fixed to the rotating shaft 50 to drive the rotating shaft 50 to rotate;

[0056] The locking plate 40 is formed with an accommodating space and a hydraulic valve 41 connected to the accommodating space. A water-soluble component 42 that dissolves in water is fixed in the accommodating space. The water-soluble component 42 is fixed to the locking plate 40 and clamps the rotating shaft 50 to lock the rotating shaft 50.

[0057] The driven disk 30 includes a puncture needle 31 which is opposite to the diaphragm and has a spacing therebetween. The puncture needle 31 is transmission-connected to the rotating shaft 50, so that after the water pressure valve is opened, the water-soluble component dissolves in water to release the lock on the rotating shaft, and the rotating shaft 50 rotates to drive the puncture needle 31 to move to puncture the diaphragm.

[0058] In this embodiment, the rotating shaft 50 includes rotating shaft units correspondingly located in the locking plate 40 , the driving plate 20 , and the driven plate 30 , and the three rotating shaft units are axially fixed or integrally formed.

[0059] See also Figure 3 The figure is a schematic diagram of the connection between the driving disk and the locking disk of the water pressure-induced inflation device of the present invention. Figure 4 for Figure 3 AA direction cross-sectional view. Figures 2 to 4 As shown, the driving member 21 is a coil spring embedded in the driving disk 20 and wound into multiple rings, one end of the coil spring is fixed to the driving disk 20, and the other end is fixed to the rotating shaft 50. When the coil spring is to be restored to its original state, since one end of the coil spring is fixed, only the other end can be moved to drive the rotating shaft 50 to rotate.

[0060] Specifically, the rotating shaft 50 is formed with a bayonet 500 adapted to the coil spring, and the other end of the coil spring is inserted into the bayonet to achieve fixation. The fixing method of the coil spring is not limited to this.

[0061] In this embodiment, the driving disk 20 is a cylindrical structure, and a side surface thereof is formed with an annular groove surrounding the central rotating shaft 50 for embedding the coil spring therein. The size of the coil spring is determined according to actual needs.

[0062] See also Figure 5 for Figure 3 Cross-sectional view along the BB direction before water pressure excitation. Figure 6 for Figure 3 Cross-sectional view in the BB direction after water pressure excitation. Figures 2 to 6 As shown, a accommodating space and an opening connected to the accommodating space are formed in the locking plate 40, and the opening is sealed by a water pressure valve 41. The water pressure valve 41 opens when it senses that the water pressure value reaches a preset water pressure value. Therefore, when the water pressure value sensed by the water pressure valve 41 reaches the preset water pressure value after the life raft falls into the water, the water pressure valve 41 opens to allow water to enter the accommodating space.

[0063] The rotating shaft 50 is connected to the accommodating space in the locking plate via a sliding ring seal. There are mature products of sliding ring seals on the market, which will not be described in detail here.

[0064] like Figure 5 As shown, a water-soluble component 42 that dissolves in water is fixed in the accommodating space. The water-soluble component 42 is fixed to the locking plate 40 and clamps the rotating shaft 50 to lock the rotating shaft 50. The device is in a stable state without triggering inflation.

[0065] In this embodiment, the water-soluble component 42 is a water-soluble toilet paper disposed in the accommodating space. The water-soluble toilet paper is fixed to the locking plate 40 and clamps the rotating shaft 50 .

[0066] like Figure 6 As shown, when water enters the accommodating space, the water-soluble component 42 is melted, thereby releasing the clamping connection between the water-soluble component 42 and the rotating shaft 50, allowing the rotating shaft 50 to rotate under the action of the coil spring.

[0067] Specifically, combined Figure 5 Figure 6 As shown, the small circle of the water-soluble paper is used to fix the water-soluble paper to the locking plate. In the unactivated state, the protruding structure of the water-soluble paper blocks the rotating shaft 50 to prevent it from rotating. When the water-soluble paper is hydrolyzed, the water-soluble paper loosens and cannot block the rotating shaft 50, and the rotating shaft 50 rotates under the rotation force of the torsion spring.

[0068] See also Figure 7 The figure is a schematic diagram of the connection between the driven disk and the gas cylinder of the water pressure-activated inflation device of the present invention before water pressure activation. Figure 8 for Figure 7 The cross-sectional view in the CC direction. Figure 7 and Figure 8 As shown, before the water pressure is excited, the diaphragm seals the gas cylinder, the probe 31 faces the diaphragm, and a gap is left between the end of the probe 31 and the diaphragm, so that the diaphragm remains intact and leak-proof.

[0069] See also Fig. 9 The figure is a schematic diagram of the connection between the driven disk and the gas cylinder of the water pressure excited inflation device of the present invention after water pressure excitation. Fig.10 for Fig. 9 Cross-sectional view in DD direction. Fig. 9 and Fig.10 As shown, after the water pressure is stimulated, the probe moves to puncture the membrane, and the gas cylinder inflates the buoy 11 through the punctured hole of the membrane.

[0070] In this embodiment, a rack 32 is fixed to the side of the needle 31; a gear 33 meshing with the rack 32 is fixed to the end of the rotating shaft 50 located in the driven disk 30. That is, the needle 31 is connected to the rotating shaft 50 through the assembly formed by the meshing of the rack 32 and the gear 33, so that the rotation of the rotating shaft 50 drives the needle 31 to move. Specifically, the rotating shaft 50 drives the gear 33 to rotate, and the rotation of the gear 33 drives the rack 32 to move linearly toward the diaphragm, thereby driving the needle 31 to puncture the diaphragm, so that the gas cylinder inflates the buoy 11.

[0071] The driving disc 20 and the driven disc 30 have grooves 200 and protrusions 300 formed on the opposite sides thereof, and the grooves 200 and the protrusions 300 are connected by clamping, so as to facilitate installation and disassembly. In this embodiment, the opposite sides of the driving disc 20 and the driven disc 30 are connected to each other and are located on opposite sides of the fabric layer of the buoy 11.

[0072] Furthermore, fixed rubber gaskets are sandwiched between opposite sides of the driving plate 20 and the driven plate 30 to achieve sealing and waterproofing.

[0073] In order to facilitate the installation of the driving plate 20 and the driven plate 30 on both sides of the buoy 11, the buoy 11 is provided with a through hole for the rotating shaft 50 to pass through;

[0074] Furthermore, the connection between the buoy 11 and the driving plate 20 and the driven plate 30 is sealed by a waterproof sealing layer.

[0075] In this embodiment, the gas cylinder is made of carbon fiber and is lighter than a traditional gas cylinder.

[0076] The excitation process of the water pressure excitation inflation device of the present invention is described below:

[0077] When the life raft falls into the water, the hydraulic valve 41 senses the preset water pressure value and opens the hydraulic valve 41 to allow water to enter the accommodating space. When water enters the accommodating space, the water-soluble component 42 melts, thereby releasing the clamping connection between the water-soluble component 42 and the rotating shaft 50, and the rotating shaft 50 is allowed to rotate under the action of the coil spring. The rotation of the rotating shaft 50 drives the gear 33 in the driven disk 30 to rotate, and the rotation of the gear 33 drives the rack 32 to move linearly toward the diaphragm, thereby driving the puncture needle 31 to puncture the diaphragm, so that the gas cylinder inflates the buoy 11. The gas is released into the buoy 11, and the life raft inflates and floats on the water surface.

[0078] The present invention also provides an airdrop rescue life raft, comprising:

[0079] A foldable raft 10;

[0080] A buoy 11 is connected to the raft 10 and has an inflatable space;

[0081] The water pressure excitation inflation device installed on the buoy 11 includes

[0082] Corresponding to the driving disc 20 and the driven disc 30 fixed to the outside and inside of the buoy 11 and attached to each other with buckles, a locking disc 40 is arranged outside the buoy 11 and attached to the side of the driving disc 20 away from the driven disc 30;

[0083] A rotating shaft 50 rotatably penetrates the locking plate 40, the driving plate 20 and the driven plate 30;

[0084] A gas cylinder 60 fixed to the driven disk 30 and disposed inside the buoy 11, wherein the gas cylinder 60 is filled with gas and the bottle mouth is closed by a diaphragm;

[0085] The driving disk 20 includes a driving member 21 fixed to the rotating shaft 50 to drive the rotating shaft 50 to rotate;

[0086] The locking plate 40 is formed with an accommodating space and a hydraulic valve 41 connected to the accommodating space. A water-soluble component 42 that dissolves in water is fixed in the accommodating space. The water-soluble component 42 is fixed to the locking plate 40 and clamps the rotating shaft 50 to lock the rotating shaft 50.

[0087] The driven disk 30 includes a puncture needle 31 which is opposite to the diaphragm and has a spacing therebetween. The puncture needle 31 is transmission-connected to the rotating shaft 50, so that after the water pressure valve is opened, the water-soluble component dissolves in water to release the lock on the rotating shaft, and the rotating shaft 50 rotates to drive the puncture needle 31 to move to puncture the diaphragm.

[0088] See also Fig.11 This is a schematic diagram of the handbag of the airdrop rescue life raft of the present invention. Figure 1 and Fig.11 As shown, the present invention also provides a handbag for airdrop rescue life raft, comprising:

[0089] A bag body 70 having a bag opening 71 for placing the airdrop rescue life raft 10;

[0090] A plurality of buckles 72 are arranged along the edge of the bag opening; and

[0091] A plurality of loops 72 are sequentially provided to connect the breakable rope 73 at the edge of the bag opening. A pair of annular belts 74 are also provided on the bag body 70 for easy carrying.

[0092] In the storage and transportation state, additional lashing ropes will be fixed outside the life raft to protect the life raft bag and the fragile rope. The lashing ropes will be untied before throwing, and the quick-release design is adopted. The fragile rope 73 has sufficient strength to ensure that the bag opening 71 is closed. When the life raft is inflated, the fragile rope 73 can be broken, and the three sides of the bag body 70 can be opened to release the life raft and inflate it into shape, floating on the water surface. Note that the bag opening 71 of the bag body 70 is not watertight. It is necessary to ensure that seawater can smoothly enter the interior of the bag body 70 after falling into the water, so as to stimulate the water pressure to stimulate the inflation device to make the life raft inflate and unfold quickly. Using a handbag to store the life raft can avoid the problem that the traditional life raft is very heavy and inconvenient to carry when it is installed in a fiberglass life raft cylinder.

[0093] The beneficial effects of the airdrop rescue life raft and the water pressure-activated inflation device of the present invention are:

[0094] The present invention provides a driving disk, a locking disk, and a driven disk that are connected through a rotating shaft, and uses the water-soluble component of the locking disk to lock the rotating shaft. A gap is left between the probe and the diaphragm of the gas cylinder before excitation. When the water pressure valve is opened and the water-soluble component is dissolved, the rotating shaft rotates under the action of the driving disk, and the probe is driven by the gear rack to move toward the diaphragm to puncture the diaphragm, and the gas cylinder inflates the buoy. The present invention uses water pressure to trigger the inflation of the buoy, thereby solving the problem that the inflatable life raft cannot be automatically triggered to inflate and unfold after being thrown into the sea empty. The present invention installs the gas cylinder inside the raft tube, which can slow down the corrosion of the gas cylinder.

[0095] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be the scope defined by the attached claims.

Claims

1. A water pressure-activated inflation device, installed on a buoy with an inflatable space of a life raft, characterized in that: The device includes: A driving disc and a driven disc fixed to the outside and inside of the buoy and connected with each other by a buckle, and a locking disc arranged on the outside of the buoy and attached to a side of the driving disc away from the driven disc; A rotating shaft rotatably penetrates the locking plate, the driving plate and the driven plate; A gas cylinder fixed to the driven disk and arranged inside the buoy, wherein the gas cylinder is filled with gas and the bottle mouth is closed by a diaphragm; Wherein, the driving disk includes a driving member fixed to the rotating shaft to drive the rotating shaft to rotate; The locking plate is formed with an accommodating space and a water pressure valve connected to the accommodating space, a water-soluble component that dissolves in water is fixed in the accommodating space, the water-soluble component is fixedly connected to the locking plate and clamps the rotating shaft to lock the rotating shaft; The water-soluble component is a water-soluble toilet paper disposed in the accommodating space, and the water-soluble toilet paper is fixed to the locking plate and clamps and fixes the rotating shaft; The driven disk includes a needle facing the diaphragm and having a space between the needle and the diaphragm, and the needle is in driving connection with the rotating shaft, so that after the hydraulic valve is opened, the water-soluble component dissolves in water to release the lock on the rotating shaft, and the rotating shaft rotates to drive the needle to move to puncture the diaphragm; A rack is fixed on the side of the needle; A gear meshing with the rack is fixed to the end of the rotating shaft located in the driven plate.

2. The water pressure-activated inflation device according to claim 1, characterized in that: The driving member is a coil spring embedded in the driving disk and wound into multiple rings. One end of the coil spring is fixed to the driving disk, and the other end is fixed to the rotating shaft.

3. The water pressure-activated inflation device according to claim 2, characterized in that: The rotating shaft is formed with a bayonet adapted to the coil spring, and the other end of the coil spring is inserted into the bayonet to achieve fixation.

4. The water pressure-activated inflation device according to claim 1, characterized in that: The buoy is provided with a through hole for the rotating shaft to pass through; The connection between the buoy and the driving disc and the driven disc is sealed by a waterproof sealing layer.

5. The water pressure-activated inflation device according to claim 1, characterized in that: The opposite sides of the driving disk and the driven disk are correspondingly formed with grooves and protrusions, and the grooves and the protrusions are connected by clamping.

6. The water pressure-activated inflation device according to claim 1, characterized in that: Fixed rubber gaskets are sandwiched between opposite sides of the driving disc and the driven disc to achieve sealing and waterproofing.

7. An airdrop rescue life raft, characterized in that: include: Foldable raft; A buoy connected to the periphery of the raft and having an inflatable space is arranged around the raft; The water pressure excitation inflation device installed on the buoy includes: A driving disc and a driven disc fixed to the outside and inside of the buoy and connected with each other by a buckle, and a locking disc arranged on the outside of the buoy and attached to a side of the driving disc away from the driven disc; A rotating shaft rotatably penetrates the locking plate, the driving plate and the driven plate; A gas cylinder fixed to the driven disk and arranged inside the buoy, wherein the gas cylinder is filled with gas and the bottle mouth is closed by a diaphragm; Wherein, the driving disk includes a driving member fixed to the rotating shaft to drive the rotating shaft to rotate; The locking plate is formed with an accommodating space and a water pressure valve connected to the accommodating space, a water-soluble component that dissolves in water is fixed in the accommodating space, the water-soluble component is fixedly connected to the locking plate and clamps the rotating shaft to lock the rotating shaft; The driven disk includes a puncture needle facing the diaphragm and having a spacing therebetween. The puncture needle is transmission-connected to the rotating shaft, so that after the water pressure valve is opened, the water-soluble component dissolves in water to release the lock on the rotating shaft, and the rotation of the rotating shaft drives the puncture needle to move to puncture the diaphragm.

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