Submersible hidden water inlet

Abstract

The invention relates to the technical field of submersible, in particular to a submersible hidden water inlet which comprises a valve seat, a hollow ball core, a protective mesh and a first driving mechanism, one end of the valve seat is fixedly arranged on the surface in a cabin body, the other end of the valve seat is fixedly provided with a water cabin connector, and the water cabin connector is used for being communicated with a ballast water tank; a water inlet hole is formed in the position, corresponding to the valve seat, of the cabin body, the water inlet hole is used for being communicated with seawater, the hollow ball core is rotationally arranged in the valve seat, and the side, close to the cabin body, of the hollow ball core penetrates through the valve seat; the first driving mechanism drives the hollow ball core and the protective net grid to rotate so as to block the water inlet hole and hide the protective net grid, and after hiding, due to the streamline design of the spherical surface, the submersible can keep low hydrodynamic resistance during high-speed submerging, noise is reduced, the concealment of the submarine is enhanced, and the service life of the submarine is prolonged. And hidden diving of the submarine is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of submersibles, and in particular to a hidden water inlet of a submersible. Background Art

[0002] Submersibles cover a wide range, from highly automated small submersibles that can accommodate only one or two people, to large submarines that can carry hundreds of people and have the ability to dive for a long time, such as the design of a micro-submarine disclosed in CN106394836B.

[0003] The submarine's water inlet, namely the sea valve, is a key component for filling and draining the ballast water tank, and is usually concealed in the submarine's belly. Correspondingly, the water flow hole (vent valve) located at the top of the ballast water tank is mainly used for exhaust, and is commonly found above the waterline. When the submarine dives, the sea valve and the vent valve are opened, seawater flows into the ballast water tank, and the air in the tank is discharged through the vent valve; and during the surfacing process, the sea valve is opened again to inflate the ballast water tank and cause the seawater to be discharged.

[0004] In traditional designs, the water inlets of submarines are mostly open and equipped with protective grilles to block foreign objects in the water. However, this design will add additional underwater resistance and noise when the submarine is diving at high speed, affecting the submarine's stealth. Summary of the invention

[0005] In view of this, the present invention proposes a hidden water inlet of a submersible, which drives the hollow spherical core and the protective grid to rotate through a first driving mechanism to achieve the blocking of the water inlet and the hiding of the protective grid. After hiding, due to the streamlined design of the spherical surface, the submersible can maintain a low hydrodynamic resistance when diving at high speed, thereby reducing noise, enhancing the stealth of the submarine, and facilitating the stealth of the submarine.

[0006] The technical solution of the present invention is achieved in this way:

[0007] The present invention provides a submersible hidden water inlet, comprising a valve seat, a hollow spherical core, a protective grid and a first driving mechanism, wherein:

[0008] One end of the valve seat is fixedly arranged on the surface inside the cabin body, and the other end is fixedly arranged with a water tank connection port, and the water tank connection port is used to connect with the ballast water tank;

[0009] A water inlet hole is provided on the cabin at a position corresponding to the valve seat, and the water inlet hole is used to connect seawater. The hollow ball core is rotatably arranged inside the valve seat, and the side of the hollow ball core close to the cabin body penetrates the valve seat and is slidably arranged in the water inlet hole;

[0010] A cross-section is provided on the side of the hollow spherical core, the cross-section is perpendicular to the hollow of the hollow spherical core, one end of the protective mesh grid abuts against the cross-section, and the other end is a spherical structure. After the protective mesh grid and the hollow spherical core abut, a spherical structure is formed. The diameter of the end of the protective mesh grid close to the cross-section is greater than the inner diameter of the water inlet hole;

[0011] The first driving mechanism is fixedly arranged on the side of the valve seat and is used to drive the hollow spherical core and the protective mesh grid to rotate, so that the spherical surface of the protective mesh grid slides into the water inlet hole and penetrates it, or the spherical surface of the hollow spherical core slides into the water inlet hole and penetrates it.

[0012] Based on the above technical solutions, preferably, the diameter of the hollow spherical core is greater than the vertical distance between the core of the hollow spherical core and the outer surface of the cabin.

[0013] Based on the above technical solutions, preferably, the surface of the water inlet hole abuts against the spherical surface of the hollow spherical core.

[0014] Based on the above technical solutions, preferably, a spherical cavity is arranged inside the valve seat. A first through hole is arranged at one end of the valve seat close to the cabin, and a second through hole is arranged at the other end. Among them,

[0015] The first through hole and the second through hole are communicated through the spherical cavity, and the spherical cavity and the water inlet hole are communicated through the first through hole;

[0016] The hollow spherical core is rotatably arranged in the spherical cavity, and the spherical surface of the hollow spherical core abuts against and is slidably connected to the surfaces of the first through hole and the second through hole respectively;

[0017] The water tank connection port is fixedly arranged on the second through hole.

[0018] Based on the above technical solutions, preferably, the water tank connection port is a cylindrical structure. One end of the water tank connection port is fixedly connected to the second through hole, and an installation flange is fixedly arranged at the other end.

[0019] Based on the above technical solutions, preferably, a cabin connection end is fixedly arranged on the side of the valve seat, and the cabin connection end is fixedly connected to the cabin.

[0020] Based on the above technical solutions, preferably, the first driving mechanism includes a rotary cylinder and a first cylinder cover. Among them,

[0021] The rotary cylinder is fixedly arranged on the valve seat. The output end of the rotary cylinder penetrates the valve seat and is fixedly connected to the side of the hollow spherical core. The rotary cylinder is perpendicular to the hollow of the hollow spherical core;

[0022] The first cylinder cover is sleeved on the outside of the rotary cylinder and is fixedly arranged on the valve seat.

[0023] On the basis of the above technical solution, preferably, it also includes a grabbing component, one end of which is fixedly connected to the valve seat, and the other end is used to grab the protective grid to separate the protective grid and the hollow spherical core from each other.

[0024] On the basis of the above technical solution, preferably, the grabbing assembly includes an electromagnetic ring, a telescopic cylinder and a second cylinder cover, wherein:

[0025] The valve seat is provided with a receiving cavity inside, and the receiving cavity is communicated with the ball cavity;

[0026] The electromagnetic ring is slidably disposed in the receiving cavity, one end of the electromagnetic ring abuts against the spherical surface of the protective grid and selectively magnetically adsorbs the protective grid;

[0027] The telescopic cylinder is fixedly arranged on the side of the valve seat, and the output end of the telescopic cylinder passes through the side of the valve seat and is elastically connected to the electromagnetic ring, and the output direction of the telescopic cylinder is perpendicular to the output direction of the first driving mechanism;

[0028] The second cylinder cover is sleeved on the outside of the telescopic cylinder and is fixedly arranged on the valve seat.

[0029] On the basis of the above technical solution, preferably, the grab assembly further includes a damping spring, wherein:

[0030] The damping spring is arranged between the electromagnetic ring and the telescopic cylinder, and the output direction of the damping spring is parallel to the output direction of the telescopic cylinder;

[0031] One end of the damping spring is fixedly connected to the electromagnetic ring, and the other end is fixedly connected to the output end of the telescopic cylinder.

[0032] The submersible hidden water inlet of the present invention has the following beneficial effects compared with the prior art:

[0033] (1) The hollow spherical core and the protective grille are driven to rotate by the first driving mechanism to seal the water inlet and hide the protective grille. After hiding, due to the streamlined design of the spherical surface, the submersible can maintain a low hydrodynamic resistance when diving at high speed, thereby reducing noise, enhancing the stealth of the submarine, and facilitating the stealth of the submarine.

[0034] (2) By setting one end of the grasping component to grasp the protective mesh grating, the protective mesh grating can be separated from the hollow ball core, facilitating the removal of the protective mesh grating from the hollow ball core during drainage, so that the water inlet is not affected by the protective mesh grating. Therefore, the drainage is relatively smooth in this state, which is conducive to rapid drainage. Brief Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0036] Figure 1 Is a perspective view of the hidden water inlet of the submersible of the present invention;

[0037] Figure 2 Is a perspective view of another angle of the hidden water inlet of the submersible of the present invention;

[0038] Figure 3 Is a schematic structural view of the water inlet of the present invention;

[0039] Figure 4 Is a schematic connection structure view of the hollow ball core and the electromagnetic ring of the present invention;

[0040] Figure 5 Is a schematic internal structure view of the valve seat of the present invention;

[0041] Figure 6 Is an exploded view of the hollow ball core and the protective mesh grating of the present invention;

[0042] Figure 7 Is a perspective view of the protective mesh grating of the present invention;

[0043] Figure 8 Is a partial perspective view of the grasping component of the present invention;

[0044] In the figure: 1, valve seat; 2, hollow ball core; 3, protective mesh grating; 4, first driving mechanism; 5, grasping component; 6, cabin; 41, rotary cylinder; 42, first cylinder cover; 51, electromagnetic ring; 52, telescopic cylinder; 53, second cylinder cover; 54, damping spring; 101, water tank connection port; 102, cabin connection end; 103, spherical cavity; 104, first through hole; 105, second through hole; 106, storage cavity; 201, cross section; 202, positioning hole; 301, positioning protrusion; 601, water inlet. Detailed Embodiments

[0045] The following will be combined with the specific implementation of the present invention to clearly and completely describe the technical solution in the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementation. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] like Figure 1-8 As shown, the hidden water inlet of a submersible of the present invention comprises a valve seat 1, a hollow spherical core 2, a protective grid 3 and a first driving mechanism 4.

[0047] Among them, one end of the valve seat 1 is fixedly set on the surface inside the cabin body 6, and the other end is fixedly set with a water tank connection port 101, and the water tank connection port 101 is used to connect with the ballast water tank; a ball cavity 103 is set inside the valve seat 1, and a first through hole 104 is set on the end of the valve seat 1 close to the cabin body 6, and a second through hole 105 is set on the other end. The first through hole 104 and the second through hole 105 are connected through the ball cavity 103.

[0048] Specifically, a cabin connection end 102 is fixedly provided on the side of the valve seat 1, and the cabin connection end 102 is fixedly connected to the cabin 6; the water tank connection port 101 is fixedly provided on the second through hole 105, which is a cylindrical structure, one end of the water tank connection port 101 is fixedly connected to the second through hole 105, and the other end is fixedly provided with a mounting flange, and the mounting flange is connected to the ballast water tank through a pipeline.

[0049] Figure 1-3 The cabin 6 shown in the figure is a partial outer shell of the submersible. A water inlet hole 601 is arranged at a position corresponding to the valve seat 1 on the cabin 6. The water inlet hole 601 is used to connect with seawater. The ball cavity 103 and the water inlet hole 601 are connected through the first through hole 104. The hollow ball core 2 is rotatably arranged inside the valve seat 1. Specifically, the hollow ball core 2 is rotatably arranged in the ball cavity 103, and the spherical surface of the hollow ball core 2 is respectively abutted against the surface of the first through hole 104 and the surface of the second through hole 105, and are slidably connected.

[0050] like Figure 2 As shown, the side of the hollow spherical core 2 close to the cabin 6 passes through the valve seat 1 and is slidably arranged in the water inlet hole 601, wherein the surface of the water inlet hole 601 and the spherical surface of the hollow spherical core 2 are in contact with each other, as shown in FIG. Figure 2 As shown, when there is no need to inlet or outlet water, the spherical surface of the hollow spherical core 2 is located inside the water inlet hole 601 to block the water inlet hole 601. After blocking, due to the streamlined design of the spherical surface, the submersible can maintain a low hydrodynamic resistance when diving at high speed, thereby reducing noise, enhancing the stealth of the submarine, and facilitating the stealth of the submarine.

[0051] like Figure 6As shown, the side of the hollow spherical core 2 is provided with a cross section 201, and the cross section 201 is perpendicular to the hollow of the hollow spherical core 2. Figure 4 As shown, when the hollow spherical core 2 blocks the water inlet 601, one end of the protective grid 3 is pressed against the cross section 201; the other end of the protective grid 3 is a spherical structure, and when the protective grid 3 and the hollow spherical core 2 are pressed against each other, a spherical structure is formed, and the formed spherical structure can rotate in the ball cavity 103.

[0052] To prevent the protective mesh 3 from falling out of the water inlet hole 601, the diameter of the end of the protective mesh 3 close to the cross-section 201 is larger than the inner diameter of the water inlet hole 601, and the diameter of the hollow spherical core 2 is larger than the vertical distance between the spherical core 2 and the outer surface of the cabin 6. Figure 2 As shown, this arrangement can make the spherical surface of the hollow spherical core 2 protrude from the outer surface of the cabin body 6.

[0053] The first driving mechanism 4 is fixedly arranged on the side of the valve seat 1, and is used to drive the hollow ball core 2 and the protective grid 3 to rotate, so that the spherical surface of the protective grid 3 slides into the water inlet hole 601 and penetrates it, or the spherical surface of the hollow ball core 2 slides into the water inlet hole 601 and penetrates it. Specifically, the first driving mechanism 4 includes a rotary cylinder 41 and a first cylinder cover 42, wherein the rotary cylinder 41 is fixedly arranged on the valve seat 1, and the output end of the rotary cylinder 41 penetrates the valve seat 1 and is fixedly connected to the side of the hollow ball core 2, and the rotary cylinder 41 is perpendicular to the hollow of the hollow ball core 2; the first cylinder cover 42 is used to prevent seawater from corroding the rotary cylinder 41, which is sleeved on the outside of the rotary cylinder 41 and is fixedly arranged on the valve seat 1.

[0054] When water needs to be inlet, the rotary cylinder 41 drives the hollow spherical core 2 to rotate, so that the protective grid 3 moves to the inside of the water inlet hole 601, and the hollow of the hollow spherical core 2 is aligned with the water inlet hole 601. After alignment, the spherical surface of the protective grid 3 protrudes out of the water inlet hole 601 like the spherical surface of the hollow spherical core 2. At this time, seawater can pass through the water inlet hole 601, the hollow of the hollow spherical core 2, and the water tank connection port 101 in sequence into the delivery pipe of the ballast water tank, and then enter the ballast water tank. After water enters, the rotary cylinder 41 drives the hollow spherical core 2 to rotate in the opposite direction, so that the protective grid 3 moves into the spherical cavity 103, and the spherical surface of the hollow spherical core 2 moves into the water inlet hole 601. At this time, the spherical surface of the hollow spherical core 2 blocks the water inlet hole 601, and the protective grid 3 is hidden in the spherical cavity 103. By hiding, the submersible can maintain a low hydrodynamic resistance when diving at high speed, thereby reducing noise, enhancing the concealment of the submarine, and facilitating the stealth of the submarine.

[0055] In order to improve the connection effect between the protective grid 3 and the hollow spherical core 2, as Figure 6-7As shown in the figure, a positioning protrusion 301 is provided at one end of the protective grid 3 close to the cross-section 201, and a positioning hole 202 is provided on the cross-section 201. Among them, the positioning protrusion 301 and the positioning hole 202 are inserted into each other.

[0056] When draining water, if the protective grid 3 is moved back to the water inlet hole 601, the protective grid 3 will affect the smoothness of drainage, and the collision between the water flow and the protective grid 3 will generate a relatively large noise, which is not conducive to the concealment of the submersible.

[0057] To solve the above problems, the hidden water inlet of the submersible further includes a grasping component 5. One end of the grasping component 5 is fixedly connected to the valve seat 1, and the other end is used to grasp the protective grid 3 so that the protective grid 3 is separated from the hollow ball core 2; when draining water, the protective grid 3 is disassembled from the hollow ball core 2 through the grasping component 5, and the rotary cylinder 41 only drives the hollow ball core 2 to rotate. When the hollow of the hollow ball core 2 is aligned with the water inlet hole 601, there is no protective grid 3 blocking at the water inlet hole 601, so the smoothness of drainage will be greatly improved and the noise will be reduced.

[0058] The above-mentioned grasping component 5 includes an electromagnetic ring 51, a telescopic cylinder 52 and a second cylinder cover 53.

[0059] Among them, a receiving cavity 106 is provided inside the valve seat 1, and the receiving cavity 106 is communicated with the spherical cavity 103. When the spherical surface of the hollow ball core 2 blocks the water inlet hole 601, the protective grid 3 is located at the receiving cavity 106.

[0060] The electromagnetic ring 51 is slidably arranged in the receiving cavity 106. One end of the electromagnetic ring 51 abuts against the spherical surface of the protective grid 3 and selectively magnetically adsorbs the protective grid 3. The telescopic cylinder 52 is fixedly arranged on the side of the valve seat 1, and the output end of the telescopic cylinder 52 penetrates the side of the valve seat 1 and is elastically connected to the electromagnetic ring 51. The output direction of the telescopic cylinder 52 is perpendicular to the output direction of the first driving mechanism 4.

[0061] In the water inlet and blocking states, the electromagnetic ring 51 is powered off and has no magnetism. It abuts against the spherical surface of the protective grid 3 or abuts against the spherical surface of the hollow ball core 2 to assist the synchronous rotation of the hollow ball core 2 and the protective grid 3. When draining water, the electromagnetic ring 51 is powered on and has magnetism to magnetically adsorb the protective grid 3, and then the electromagnetic ring 51 is driven to translate through the telescopic cylinder 52 so that the protective grid 3 is separated from the hollow ball core 2. Among them, the electromagnetic ring 51 is any one of the electromagnets in the prior art, and its shape is set as a circular ring. The specific structure can be known in the prior art and will not be elaborated here. The circular electromagnetic ring 51 can be better matched with the spherical surface.

[0062] To prevent the telescopic cylinder 52 from being corroded by seawater, the second cylinder cover 53 is sleeved outside the telescopic cylinder 52 and fixedly arranged on the valve seat 1.

[0063] To achieve the elastic connection between the electromagnetic ring 51 and the spherical surface, as Figure 8 shown, the grasping component 5 further includes a damping spring 54. Among them, the damping spring 54 is arranged between the electromagnetic ring 51 and the telescopic cylinder 52, and the output direction of the damping spring 54 is parallel to the output direction of the telescopic cylinder 52; one end of the damping spring 54 is fixedly connected to the electromagnetic ring 51, and the other end is fixedly connected to the output end of the telescopic cylinder 52, and the elastic contact between the electromagnetic ring 51 and the spherical surface is realized through the damping spring 54.

[0064] To facilitate the installation of the damping spring 54, the front end of the output end of the telescopic cylinder 52 is disc-shaped, and a plurality of damping springs 54 are arranged between the disc-shaped output end and the electromagnetic ring 51. The plurality of damping springs 54 are circumferentially arranged in an annular array along the electromagnetic ring 51. The damping spring 54 includes a telescopic rod and a compression spring. One end of the telescopic rod is fixed on the electromagnetic ring 51, and the other end is fixed on the front end of the output end of the telescopic cylinder 52. The compression spring is sleeved outside the telescopic rod, and the elastic contact between the electromagnetic ring 51 and the spherical surface is realized through the telescopic cooperation of the telescopic rod and the compression spring.

[0065] The usage method of the hidden water inlet of the submersible of the present invention is as follows:

[0066] When water enters, the first driving mechanism 4 drives the hollow ball core 2 to rotate, so that the protective net grid 3 reaches the water inlet hole 601, and the water impurities are intercepted by the protective net grid 3. When the water inlet stops, the first driving mechanism 4 drives the hollow ball core 2 to rotate in the reverse direction, so that the protective net grid 3 moves to the storage cavity 106, realizing the hiding of the protective net grid 3. At this time, the spherical surface of the hollow ball core 2 plugs the water inlet hole 601.

[0067] When draining water, the grasping component 5 grasps the protective net grid 3, separates the protective net grid 3 from the hollow ball core 2, and moves the protective net grid 3 into the storage cavity 106. After moving in, the first driving mechanism 4 drives the hollow ball core 2 to rotate, so that the hollow of the hollow ball core 2 is aligned with the water inlet hole 601. At this time, the drainage process of the water inlet hole 601 is not affected by the protective net grid 3.

[0068] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A submersible concealed water inlet, comprising a valve seat (1), characterized in that: It also includes a hollow spherical core (2), a protective grid (3) and a first driving mechanism (4), wherein: One end of the valve seat (1) is fixedly arranged on the surface inside the cabin (6), and the other end is fixedly provided with a water tank connection port (101), and the water tank connection port (101) is used to connect to the ballast water tank; A water inlet hole (601) is provided on the cabin (6) at a position corresponding to the valve seat (1), and the water inlet hole (601) is used to communicate with seawater. The hollow ball core (2) is rotatably arranged inside the valve seat (1), and a side of the hollow ball core (2) close to the cabin (6) passes through the valve seat (1) and is slidably arranged in the water inlet hole (601); A cross-section (201) is provided on the side of the hollow spherical core (2), the cross-section (201) being perpendicular to the hollowness of the hollow spherical core (2), one end of the protective mesh (3) being in contact with the cross-section (201), and the other end being a spherical structure, the protective mesh (3) and the hollow spherical core (2) forming a spherical structure after being in contact, and the diameter of the end of the protective mesh (3) close to the cross-section (201) being greater than the inner diameter of the water inlet hole (601); The first driving mechanism (4) is fixedly arranged on the side of the valve seat (1), and is used to drive the hollow spherical core (2) and the protective grid (3) to rotate, so that the spherical surface of the protective grid (3) slides into the water inlet hole (601) and penetrates through it, or the spherical surface of the hollow spherical core (2) slides into the water inlet hole (601) and penetrates through it.

2. The submersible hidden water inlet as claimed in claim 1, characterized in that: The diameter of the hollow spherical core (2) is greater than the vertical distance between the spherical core of the hollow spherical core (2) and the outer surface of the cabin body (6).

3. The submersible hidden water inlet as claimed in claim 2, characterized in that: The surface of the water inlet hole (601) and the spherical surface of the hollow spherical core (2) are in contact with each other.

4. The submersible hidden water inlet as claimed in claim 1, characterized in that: The valve seat (1) is provided with a ball cavity (103) inside, and a first through hole (104) is provided on one end of the valve seat (1) close to the cabin (6), and a second through hole (105) is provided on the other end, wherein: The first through hole (104) and the second through hole (105) are in communication with each other through the ball cavity (103); and the ball cavity (103) and the water inlet hole (601) are in communication with each other through the first through hole (104); The hollow spherical core (2) is rotatably disposed in the spherical cavity (103), and the spherical surface of the hollow spherical core (2) is respectively in contact with the surface of the first through hole (104) and the surface of the second through hole (105), and is slidably connected thereto; The water tank connection port (101) is fixedly arranged on the second through hole (105).

5. The submersible hidden water inlet as claimed in claim 4, characterized in that: The water tank connection port (101) is a cylindrical structure, one end of the water tank connection port (101) is fixedly connected to the second through hole (105), and the other end is fixedly provided with a mounting flange.

6. The submersible hidden water inlet as claimed in claim 1, characterized in that: A cabin connecting end (102) is fixedly provided on the side of the valve seat (1), and the cabin connecting end (102) is fixedly connected to the cabin (6).

7. The submersible hidden water inlet according to claim 1, characterized in that: The first driving mechanism (4) comprises a rotary cylinder (41) and a first cylinder cover (42), wherein: The rotary cylinder (41) is fixedly arranged on the valve seat (1), the output end of the rotary cylinder (41) passes through the valve seat (1) and is fixedly connected to the side of the hollow spherical core (2), and the rotary cylinder (41) is perpendicular to the hollowness of the hollow spherical core (2); The first cylinder cover (42) is sleeved on the outside of the rotary cylinder (41) and is fixedly arranged on the valve seat (1).

8. The submersible hidden water inlet as claimed in claim 4, characterized in that: It also comprises a grabbing assembly (5), one end of which is fixedly connected to the valve seat (1), and the other end of which is used to grab the protective grid (3) so as to separate the protective grid (3) from the hollow spherical core (2).

9. The submersible hidden water inlet as claimed in claim 8, characterized in that: The grabbing assembly (5) comprises an electromagnetic ring (51), a telescopic cylinder (52) and a second cylinder cover (53), wherein: The valve seat (1) is provided with a receiving cavity (106) inside, and the receiving cavity (106) is communicated with the ball cavity (103); The electromagnetic ring (51) is slidably disposed in the storage cavity (106), one end of the electromagnetic ring (51) is pressed against the spherical surface of the protective grid (3), and selectively magnetically adsorbs the protective grid (3); The telescopic cylinder (52) is fixedly arranged on the side of the valve seat (1), and the output end of the telescopic cylinder (52) passes through the side of the valve seat (1) and is elastically connected to the electromagnetic ring (51), and the output direction of the telescopic cylinder (52) is perpendicular to the output direction of the first driving mechanism (4); The second cylinder cover (53) is sleeved on the outside of the telescopic cylinder (52) and is fixedly arranged on the valve seat (1).

10. The submersible hidden water inlet as claimed in claim 9, characterized in that: The grab assembly (5) further comprises a damping spring (54), wherein: The damping spring (54) is arranged between the electromagnetic ring (51) and the telescopic cylinder (52), and the output direction of the damping spring (54) is parallel to the output direction of the telescopic cylinder (52); One end of the damping spring (54) is fixedly connected to the electromagnetic ring (51), and the other end is fixedly connected to the output end of the telescopic cylinder (52).

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