Drainage device in unmanned cabin and unmanned ship

Abstract

According to the drainage device in the unmanned cabin and the unmanned ship, a pumping device is connected with a first channel and a second channel and used for forming negative pressure in the first channel and the second channel and pumping a target medium; the containing box is fixed in the cabin and provided with a water inlet used for guiding accumulated water to enter a cavity in the containing box in a one-way mode when the ship body shakes. The liftable water absorption device is arranged in the cavity of the containing box, a first cavity communicated with the second channel is formed in the liftable water absorption device, the liftable water absorption device slides up and down along with the change of the internal pressure of the first cavity, and the state of being communicated with or isolated from the atmosphere can be switched in the up-down lifting sliding process; the liftable water absorption device is used for draining water in the upward or downward sliding process; the floater device is communicated with the first channel through the drainage channel, and the floater device switches the opening and closing states of the drainage channel along with the change of the drainage amount in the floater cavity. Efficient and reliable drainage is achieved when the ship body inclines in any direction.

Description

Technical Field

[0001] The present invention relates to the technical field of ship drainage, and in particular to a drainage device for an unmanned ship cabin and an unmanned ship. Background Art

[0002] During the operation of an unmanned ship on the water, due to rain, cabin leakage, pipeline leakage, moisture condensation caused by temperature difference, flushing water, etc., water accumulation will be formed in the cabin. If the accumulated water is not drained for a long time, it will corrode the hull, affect the operation, and seriously affect the stability and navigation safety of the ship.

[0003] Traditional cabin drainage devices mainly adopt the structure of a fixed drainage pump combined with a one-way valve, which has obvious technical limitations. For example, when the hull continuously shakes, it will cause uneven distribution of accumulated water, and the suction port of the traditional drainage pump often cannot effectively cover all the accumulated water areas. At the same time, the existing one-way valve is prone to seal failure in a dynamic environment, resulting in backflow of accumulated water. More seriously, when the hull shakes violently, the traditional drainage system cannot adapt to the water inlet requirements in different directions, and often shows a sharp drop in drainage efficiency. Generally speaking, the existing drainage system cannot continue to pump water when it reaches the shallow water position, and during the navigation of the unmanned ship, accompanied by shaking, the accumulated water in the cabin cannot be concentrated, so there will still be a small amount of accumulated water at the bottom of the cabin that cannot be completely drained by the drainage pump.

[0004] In addition, the existing technologies mostly adopt a drainage method driven by continuous electricity, which not only has high energy consumption, but is particularly disadvantageous in the application scenario of an unmanned ship with limited power resources. These technical defects make it difficult for the existing drainage devices to meet the reliable drainage requirements of the unmanned ship cabin under complex sea conditions. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the purpose of the present invention is to provide a drainage device for an unmanned ship cabin and an unmanned ship to solve the problems of low drainage efficiency and poor reliability in the cabin under complex sea conditions in the prior art.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a drainage device for an unmanned ship cabin, including:

[0008] A pumping device, connected to a first channel and a second channel, for forming a negative pressure in the first channel and the second channel and pumping out a target medium;

[0009] A storage box, fixed inside the cabin, provided with a water inlet, for unidirectionally guiding accumulated water into the cavity inside the storage box when the hull shakes;

[0010] A liftable water absorbing device is disposed in the cavity of the accommodating box and is used for directionally storing and timely discharging accumulated water. A first chamber connected to the second channel is constructed therein. The liftable water absorbing device rises and falls and slides up and down as the internal pressure of the first chamber changes. During the upward and downward sliding process, the liftable water absorbing device can switch between a state of being connected to or isolated from the atmosphere. The liftable water absorbing device drains water during the upward or downward sliding process.

[0011] The float device is arranged in the float chamber of the accommodating box, arranged in the drainage direction of the liftable water absorption device, and connected to the first channel through the drainage channel. The float device switches the opening and closing state of the drainage channel as the amount of drainage in the float chamber changes.

[0012] In some embodiments, the liftable water absorbing device comprises a spring, a pump body, a reinforcing net and a water absorbing sponge arranged in sequence from bottom to top;

[0013] The bottom of the spring abuts against the bottom of the cavity, and the top abuts against the bottom of the pump body;

[0014] The side wall of the pump body is provided with a vent hole, and the side wall of the accommodating box is provided with a vent hole connected to the atmosphere. When the pump body slides downward to a preset position, the vent hole is aligned with the vent hole; the space enclosed by the bottom of the pump body and the side wall of the accommodating box constitutes a first chamber;

[0015] The reinforcing net is located on the top of the pump body, and the water-absorbing sponge is located on the top of the reinforcing net.

[0016] In some embodiments, a plurality of columns are provided in the cavity of the accommodating box, and the reinforcing net is constrained by the columns and moves vertically along the columns.

[0017] In some embodiments, the container is long and narrow, with water inlets provided at both ends of its longitudinal axis. The water inlets are connected to one-way valves, and the outlet of the one-way valve is connected to the water-absorbing sponge through a built-in flow channel of the container, so as to guide the accumulated water in one direction to the cavity inside the container.

[0018] The one-way valve is a one-way flow-guiding structure without moving parts, and its internal flow channel is designed as a multi-stage bifurcation-convergence loop. When the accumulated water flows in the positive direction, the fluid is accelerated through the loop, and when the hull shakes in the reverse direction, the fluid forms a counter-damping damping in the loop.

[0019] In some embodiments, the float device includes two floats, the two floats are arranged side by side in the float chamber, and a conical sealing plug is provided at the bottom of each float;

[0020] When there is no water in the float chamber, the two floats press down the sealing plug by their own weight to block the drainage channel;

[0021] When the accumulated water after extrusion enters the float chamber and reaches the set liquid level, the two floats float synchronously to open the drainage channel.

[0022] In some embodiments, an overflow port is provided at the top of the float chamber, and the overflow port is used for overflow drainage when the liquid level in the chamber is too high.

[0023] In some embodiments, the extraction device adopts a high-position layout mode of a three-way pipeline. The pump end of the extraction device is connected to a negative pressure pump through a hose. The negative pressure end of the extraction device communicates with the first chamber through a second channel, and the water extraction end of the extraction device communicates with the drainage channel through a first channel.

[0024] In some embodiments, an anti-siphon bending structure is provided on the horizontal section of the three-way pipeline of the extraction device, and the anti-siphon bending structure is used to prevent the accumulated water from flowing back when the pump stops.

[0025] In some embodiments, the accommodating box includes a first box body and a second box body. A water pipe cover is connected to the top of the first box body. The pump end of the extraction device extends upward out of the water pipe cover, and the first channel and the second channel of the extraction device are inserted downward into the first box body;

[0026] The second box body is fixed inside the cabin and has water inlets at both ends.

[0027] In a second aspect, an embodiment of the present application provides an unmanned ship, including the unmanned ship cabin drainage device as described above.

[0028] Compared with the prior art, the present invention at least includes the following beneficial effects:

[0029] The present invention realizes the autonomous drainage function in a dynamic environment through a unique mechanical structure design. The device creatively combines the one-way flow guiding characteristic of the one-way valve with the periodic drainage mechanism driven by negative pressure, and completes the treatment of accumulated water without continuous power supply;

[0030] When the hull tilts in any direction, the specially designed one-way valve can ensure that the accumulated water flows into the water absorption sponge unidirectionally without backflow; the negative pressure device forms a periodic negative pressure through the intermittent operation of the negative pressure pump, driving the liftable water absorption device to complete the automatic cycle of "water absorption - extrusion - drainage"; in this process, the inertial force generated by the hull shaking is cleverly converted into auxiliary drainage power, significantly improving the drainage efficiency; the float device adopts a redundant design to ensure reliable control of the drainage channel at different tilting angles;

[0031] The entire drainage device realizes autonomous operation through mechanical linkage, and has a significant energy-saving effect compared with the traditional electric drainage scheme. The negative pressure working cycle of the device can adapt to the hull shaking frequency and still maintain stable drainage performance under harsh sea conditions.

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0033] The present invention will be further described with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the following drawings without creative efforts.

[0034] Figure 1 It is a schematic structural diagram of a drainage device inside an unmanned ship cabin provided by the present invention.

[0035] Figure 2 It is a top view of the first box body in a drainage device inside an unmanned ship cabin provided by the present invention.

[0036] Figure 3 It is an exploded schematic structural diagram of a drainage device inside an unmanned ship cabin provided by the present invention.

[0037] Figure 4 It is a schematic diagram of a partial internal structure of a drainage device inside an unmanned ship cabin provided by the present invention.

[0038] Figure 5 It is a schematic cross-sectional view of the internal structure of a drainage device inside an unmanned ship cabin provided by the present invention when the pump body is about to move downward.

[0039] Figure 6 It is a schematic cross-sectional view of the internal structure of a drainage device inside an unmanned ship cabin provided by the present invention when the pump body has moved downward to the ventilation hole and the air permeation hole and is about to move upward.

[0040] Figure 7 It is a schematic structural diagram of an unmanned ship provided by the present invention. Specific Embodiments

[0041] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0043] In the description of the present invention, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0044] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the specification.

[0045] In a first aspect, with reference to Figures 1 to 6 , this embodiment provides a drainage device inside an unmanned ship cabin, including:

[0046] A pumping device 3, connected with a first channel 33 and a second channel 32, for forming a negative pressure in the first channel 33 and the second channel 32 and pumping out the target medium; the pumping device 3 is connected to a negative pressure pump. By starting the negative pressure pump, a negative pressure is formed in the first channel 33 and the second channel 32, and the target medium in the connected area is extracted by using the first channel 33 and the second channel 32, forming a dual-channel for negative pressure suction and water accumulation discharge. Among them, the target medium can be air or water;

[0047] A receiving box, fixed inside the ship cabin, provided with a water inlet, for unidirectionally guiding accumulated water into the cavity inside the receiving box when the ship hull shakes. Since the receiving box is located at a lower position inside the ship cabin, when water enters due to the shaking of the ship hull, the accumulated water will flow into the cavity inside the receiving box through the water inlet;

[0048] The liftable water absorption device is arranged in the cavity of the accommodating box and is used for directionally storing and timely discharging accumulated water. A first chamber communicating with the second channel 32 is constructed therein. The negative pressure pump controls the internal pressure of the first chamber through the second channel 32. When the negative pressure pump is started, the air in the first chamber is extracted, causing the pressure in the first chamber to decrease. The liftable water absorption device moves up and down slidingly with the change of the internal pressure of the first chamber, and the automatic lifting of the pump body 12 in the liftable water absorption device is realized through the air pressure change in the first chamber. When the pump body 12 moves due to the decrease in the air pressure in the first chamber, the water absorption sponge in the liftable water absorption device stores the accumulated water directionally. During the up and down sliding process, the pump body 12 can switch between the state of being connected to the atmosphere or isolated from the atmosphere. When the pump body 12 rises or falls to a preset position, the pump body 12 switches from the original state of being isolated from the atmosphere to the state of being connected to the atmosphere. At this time, the pressure in the first chamber returns to the atmospheric pressure, and the liftable water absorption device moves in the reverse direction to squeeze the water absorption sponge, and the liftable water absorption device drains water during the upward or downward sliding process;

[0049] The float device is arranged in the float chamber of the accommodating box and is arranged in the drainage direction of the liftable water absorption device. When the water absorption sponge is squeezed, its drainage flows into the float chamber. The float device switches the opening and closing state of the drainage channel with the change of the amount of drained water in the float chamber. When the amount of drained water in the float chamber reaches a certain amount, the float chamber will open the drainage channel and communicate with the first channel 33 through the drainage channel. At this time, the negative pressure pump extracts the accumulated water in the float chamber through the first channel 33. When the water volume in the float chamber decreases, the float chamber will close the drainage channel.

[0050] It should be noted that when the hull shakes, the accumulated water enters the accommodating box through the water inlet. The liftable water absorption device descends to absorb water under the negative pressure, and automatically rises to squeeze and drain water after reaching the set position. The float device controls the drainage timing according to the water level. This embodiment realizes automatic drainage completely relying on the mechanical structure, without a complex control system, and is especially suitable for the reliable operation of an unmanned ship in harsh sea conditions.

[0051] Combined Figures 2 to 4 , as an implementation manner, the liftable water absorption device includes a spring 11, a pump body 12, a strengthening net 8, and a water absorption sponge arranged in sequence from bottom to top;

[0052] The bottom of the spring 11 abuts against the bottom of the cavity, and the top abuts against the bottom of the pump body 12;

[0053] The side wall of the pump body 12 is provided with ventilation holes, and the side wall of the accommodating box is provided with ventilation holes 24 communicating with the atmosphere. When the pump body 12 slides downward to the preset position, the ventilation holes are aligned with the ventilation holes 24; the space surrounded by the bottom of the pump body 12 and the side wall of the accommodating box constitutes the first chamber;

[0054] The strengthening net 8 is located at the top of the pump body 12, and the water absorption sponge is located at the top of the strengthening net 8.

[0055] The spring 11 is fixed to the bottom of the container, providing the restoring force for the entire device. The pump body 12, the core moving component, has ventilation holes in its side walls, forming a linkage mechanism with the ventilation holes 24 in the side walls of the box. The reinforcing mesh 8 uses a metal mesh structure to ensure strength while reducing weight. The absorbent sponge is made of highly absorbent material and is installed on the top layer. This layered structure ensures that all components work together: the pump body 12 compresses the spring 11 to store energy when it descends, and releases energy to squeeze the sponge when it ascends.

[0056] When negative pressure is applied, pump body 12 drives the entire device downward, shifting the vent hole and air hole 24 to form a seal. When the lower limit is reached, the two holes align, releasing the negative pressure, and spring 11 pushes pump body 12 upward rapidly, squeezing the sponge to drain water. This design cleverly utilizes air pressure differentials and mechanical elasticity to achieve automatic reciprocating motion, resulting in a simple and reliable structure and extremely efficient drainage.

[0057] As an embodiment, a plurality of columns are provided in the cavity of the accommodating box, and the reinforcing net 8 is constrained by the columns and moves vertically along the columns.

[0058] It should be noted that the column guide system installed in the containing box is the key to ensuring the stable operation of the device. These columns are vertically fixed at the four corners inside the box, and precisely match the guide holes on the four sides of the reinforcing net 8. The columns are made of stainless steel, and the surface is specially treated to reduce the friction coefficient. Under the constraint of the columns, the reinforcing net 8 can only make linear motion in the vertical direction, completely avoiding the jamming problem that may be caused by lateral shaking. The guide gap is controlled between 0.5-1mm, which not only ensures smooth movement but also prevents excessive gaps from causing the device to tilt. The advantage is that it completely eliminates the influence of hull shaking on the movement trajectory of the device, ensuring that the complete working cycle of water absorption and extrusion can be accurately completed every time, greatly improving the reliability of the system.

[0059] Combine Figures 3 to 4 As an embodiment, the storage box is long and narrow, with water inlets provided at both ends of its long axis. Each water inlet is connected to a one-way valve. There are two one-way valves in total, namely a first one-way valve 5 and a second one-way valve 6. The outlet end of the one-way valve is connected to the water-absorbing sponge through a built-in flow channel of the storage box, so as to guide the accumulated water to the cavity inside the storage box in a one-way manner.

[0060] The one-way valve is a one-way flow-guiding structure with no moving parts. Its internal flow channel is designed as a multi-stage bifurcation-convergence circuit. When the accumulated water flows in the forward direction, the fluid accelerates through the circuit, and when the hull shakes in the reverse direction, the fluid forms a counter-damping damping in the circuit.

[0061] It should be noted that the check valve adopts an innovative Tesla valve design. The interior of the valve body is designed with a complex three-dimensional flow channel, which is composed of multiple bifurcation-convergence units connected in series. When water flows in the forward direction, the tributaries are superimposed and accelerated at the convergence point; when flowing in the reverse direction, a countercurrent vortex is formed, generating a huge resistance. The valve body is integrally injection-molded with engineering plastics and has no movable parts. The water inlet is enlarged in a trumpet shape and smoothly transitions with the cabin floor to ensure that accumulated water can flow in smoothly. Specifically, the one-way conduction is achieved by using the principle of fluid dynamics. No matter which direction the hull tilts, the accumulated water can flow in smoothly but cannot flow back. Compared with traditional mechanical check valves, this design without moving parts completely avoids the failure problems caused by debris jamming or corrosion, and is especially suitable for harsh environments without maintenance for a long time, greatly extending the service life.

[0062] Combined with Figure 2 , as an implementation manner, the float device includes two floats, namely the first float 9 and the second float 10. The two floats are arranged side by side in the float cavity, and a conical sealing plug is provided at the bottom of each float. Specifically, the float device adopts a dual-float redundancy design, reflecting the reliability consideration of this implementation manner. The two floats are installed side by side in independent float cavities, and a conical sealing plug is installed at the bottom of each float. The floats adopt a hollow sealed structure, and the specific gravity is accurately calculated to ensure that they can float at the set liquid level. The sealing plugs are made of wear-resistant rubber materials and form a conical seal with the valve seat. The float cavity is designed with a diversion structure to ensure that the water flow is stable and does not interfere with the movement of the floats.

[0063] When there is no accumulated water in the float cavity or the liquid level is lower than the set value, the two floats rely on their own weights to press down the sealing plugs to block the drainage channel, and the two floats fall simultaneously to achieve double sealing;

[0064] When the accumulated water after extrusion enters the float cavity and reaches the set liquid level, the two floats float synchronously to open the drainage channel. Or in some extreme sea conditions, when the cabin sways severely, even if one float is stuck due to some reason, the other can still open and drain water normally.

[0065] The greatest advantage of this design is that it provides double protection to ensure that the float device cannot fail to open under any circumstances, greatly improving the reliability of the system.

[0066] Preferably, an overflow port is provided at the top of the float cavity. The overflow port is used for overflow drainage when the liquid level in the cavity is too high to prevent the floats from being stuck due to too high a liquid level.

[0067] The design of the overflow port at the top of the float cavity is an important safety measure in this implementation manner. The overflow port is located at the highest position of the float cavity, and its diameter is accurately calculated. The lower edge of it is slightly higher than the normal working liquid level. The overflow channel adopts an inverted U-shaped design, and the outlet leads to the outside of the accommodation box. A filter screen is also provided below the overflow port to prevent debris from blocking. The entire overflow system is completely independent of the drainage channel of the float device.

[0068] When the main drainage system malfunctions and causes the liquid level to be too high, the accumulated water will be automatically discharged through the overflow port, preventing the float chamber from being overfilled and affecting the normal operation of the float. Its advantage lies in establishing a passive safety protection mechanism. Even if the control system fails completely, it can prevent the device from being damaged due to excessive accumulated water, greatly improving the safety of the system.

[0069] Combined with Figures 1 to 3 , as an implementation method, the extraction device 3 adopts a high-position layout of a three-way pipe. The pump end 31 of the extraction device 3 is connected to a negative pressure pump through a hose, which is convenient for installation and shock absorption. The negative pressure end of the extraction device 3 is connected to the first chamber through the second channel 32, and the water extraction end of the extraction device 3 is connected to the drainage channel through the first channel 33.

[0070] Preferably, the horizontal section of the three-way pipe of the extraction device 3 is provided with an anti-siphon bending structure, which is used to prevent the accumulated water from flowing back when the pump stops.

[0071] When the negative pressure pump stops working, a column of air or liquid will remain at the S-shaped bend, effectively blocking the siphon effect. The advantage of this design is that it completely eliminates the phenomenon of accumulated water flowing back that may occur when the pump stops, protects the negative pressure pump from liquid intrusion, and greatly extends the service life of the equipment.

[0072] In some embodiments, the accommodating box includes a first box body 1 and a second box body 2. A water pipe cover 4 is connected to the top of the first box body 1. The water pipe cover 4 is connected to the top of the first box body 1 through four water pipe cover fixing holes 21. The pump end 31 of the extraction device 3 extends upward out of the water pipe cover 4, and the first channel 33 and the second channel 32 of the extraction device 3 are inserted downward into the first box body 1; the three-way pipe of the extraction device 3 is fixed to the top of the first box body 1 through the water pipe fixing holes 23;

[0073] The second box body 2 is fixed inside the cabin and is provided with water inlets at both ends.

[0074] Specifically, the first box body 1 is an upper structure that integrates all pipe interfaces and sealing covers. The second box body 2 is a lower main body that contains all functional components. The two box bodies are connected through four box body connection holes 22, and a silica gel sealing ring is provided in the middle. The water pipe cover 4 on the top of the first box body 1 adopts a quick-release design for easy maintenance. The bottom of the second box body 2 is provided with an installation flange, which can be firmly fixed on the cabin floor.

[0075] Preferably, the water-absorbing sponge is designed with a gradient composite structure, and realizes the functions of efficient water absorption and intelligent drainage through the synergistic effect of material properties and physical structure. The sponge body adopts a three-layer functional structure. The bottom layer is an open large-pore structure, forming a rapid water absorption channel. The middle layer is a transition zone to achieve water flow buffering. The surface layer is a dense microporous structure to ensure uniform drainage. This gradient design enables the water flow to exhibit a unidirectional flow characteristic inside the sponge, which not only ensures the rapid water absorption ability but also avoids the disordered reverse osmosis during drainage; a diversion groove is provided at the 8th position where the bottom of the sponge is attached to the strengthening net to ensure that the accumulated water flows directionally to the float chamber during extrusion; a hydrophobic membrane is covered on the top of the sponge to prevent water droplets from splashing when the hull shakes violently; the entire sponge assembly is fixed to the iron net through detachable buckles, which is convenient for regular replacement and maintenance.

[0076] Combined with Figure 7 , on the second aspect, this embodiment provides an unmanned ship, including the in-cabin drainage device of the unmanned ship as described above.

[0077] Compared with the prior art, the above embodiment provides an in-cabin drainage device and an unmanned ship for an unmanned ship. Through the synergistic effect of the Tesla valve and the negative pressure driving mechanism, the device can automatically adapt to the shaking of the hull in different directions, realizing multi-directional water inlet and directional drainage; the design of the Tesla valve without moving parts ensures that it can still maintain a reliable one-way diversion function during violent shaking, solving the problem that traditional one-way valves are prone to failure in a dynamic environment;

[0078] Innovatively, the shaking kinetic energy of the hull is converted into auxiliary power for drainage. The spring 11 energy storage mechanism and the inertial force of the hull act synergistically, greatly reducing the dependence on continuous power supply; the extraction device 3 only works briefly during the drainage cycle, and has a significant energy-saving effect compared with traditional continuously operating drainage pumps;

[0079] Adopting a dual drainage mechanism of a mechanical float device and negative pressure pumping, the redundant design of the float ensures that the drainage channel can be reliably opened at any tilt angle, while negative pressure pumping ensures the thoroughness of drainage. The two cooperate to achieve a stable and reliable drainage effect.

[0080] The working frequency of the device automatically matches the shaking period of the hull. The more severe the sea conditions, the higher the drainage frequency. This self-adaptability enables the system to automatically optimize the drainage efficiency under different sailing conditions without manual intervention or parameter adjustment;

[0081] The split-type box structure and the detachable water-absorbing sponge assembly greatly simplify the maintenance work, and all key components can be quickly disassembled and repaired. The unique design without moving parts also significantly reduces the failure rate and maintenance requirements of the system;

[0082] The anti-siphon bending structure and the sealed maze design effectively prevent liquid backflow and cabin pollution during the drainage process. The overflow port design avoids system failures caused by too high liquid level, ensuring that the drainage process is clean and reliable;

[0083] The compact three-dimensional layout integrates the functions of water inlet, water storage and drainage in the smallest space. The design of the long strip-shaped placement box can be arranged along the edge of the cabin without affecting the use of the main space inside the cabin, which is especially suitable for the application scenario of unmanned ships with limited space.

[0084] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0085] The above embodiments only express several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be understood as a limitation to the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. An in-cabin drainage device for unmanned ships, characterized in that, Comprising: A extraction device, connected to a first channel and a second channel, for forming a negative pressure in the first channel and the second channel and extracting a target medium; A containment box, fixed inside the ship's cabin, provided with a water inlet for unidirectionally guiding accumulated water into the cavity inside the containment box when the ship hull shakes; A liftable water absorption device, arranged in the cavity of the containment box, for directionally storing and timely discharging the accumulated water, with a first chamber constructed therein that communicates with the second channel. The liftable water absorption device moves up and down slidingly with the change of the internal pressure in the first chamber, and can switch between a state of communicating with the atmosphere and being isolated during the up and down sliding process. The liftable water absorption device drains water during the upward or downward sliding process; A float device, arranged in the float chamber of the containment box, arranged in the drainage direction of the liftable water absorption device, and connected to the first channel through a drainage channel. The float device switches the opening and closing state of the drainage channel with the change of the amount of drained water in the float chamber.

2. The drainage device inside an unmanned ship's cabin according to claim 1, characterized in that The liftable water absorption device includes a spring, a pump body, a strengthening net, and a water absorption sponge arranged in sequence from bottom to top; The bottom of the spring abuts against the bottom of the cavity, and the top abuts against the bottom of the pump body; The side wall of the pump body is provided with a ventilation hole, and the side wall of the containment box is provided with a ventilation hole communicating with the atmosphere. When the pump body slides downward to a preset position, the ventilation hole aligns with the ventilation hole; the space surrounded by the bottom of the pump body and the side wall of the containment box constitutes the first chamber; The strengthening net is located on the top of the pump body, and the water absorption sponge is located on the top of the strengthening net.

3. The drainage device inside an unmanned ship's cabin according to claim 2, characterized in that Several upright columns are arranged in the cavity of the containment box, and the strengthening net is restricted by the upright columns and moves vertically along the upright columns.

4. The drainage device inside an unmanned ship's cabin according to claim 2, characterized in that The containment box is in a long strip shape, and water inlets are respectively arranged at both ends in the long axis direction. The water inlets are connected with one-way valves, and the outlet ends of the one-way valves are communicated with the water absorption sponge through an internal flow channel in the containment box for unidirectionally guiding accumulated water to the cavity inside the containment box; The one-way valve is a one-way diversion structure without moving parts, and its internal flow channel is designed as a multi-stage bifurcation-convergence loop. When the accumulated water flows in forward, the fluid accelerates through the loop, and when the ship hull shakes in the reverse direction, the fluid forms a counteracting damping in the loop.

5. The drainage device inside an unmanned ship's cabin according to claim 2, characterized in that The float device includes two floats, the two floats are arranged side by side in the float chamber, and a conical sealing plug is provided at the bottom of each float; When there is no accumulated water in the float chamber, the two floats press down the sealing plug by their own weight to block the drainage channel; When the accumulated water after extrusion enters the float chamber and reaches the set liquid level, the two floats float synchronously to open the drainage channel.

6. The drainage device inside an unmanned ship's cabin according to claim 5, characterized in that An overflow port is provided at the top of the float chamber, and the overflow port is used for overflow drainage when the liquid level in the chamber is too high.

7. An in-cabin drainage device for an unmanned ship, characterized in that the extraction device adopts a high-position arrangement mode of a tee pipe. The pump end of the extraction device is connected to a negative pressure pump through a hose. The negative pressure end of the extraction device is communicated with the first chamber through a second channel. The water extraction end of the extraction device is communicated with the drainage channel through a first channel.

8. An in-cabin drainage device for an unmanned ship according to claim 7, characterized in that an anti-siphon bending structure is provided on the horizontal section of the tee pipe of the extraction device, and the anti-siphon bending structure is used to prevent backflow of accumulated water when the pump stops.

9. An in-cabin drainage device for an unmanned ship according to claim 8, characterized in that the accommodating box includes a first box body and a second box body. A water pipe cover is connected to the top of the first box body. The pump end of the extraction device extends upward out of the water pipe cover. The first channel and the second channel of the extraction device are inserted downward into the first box body; the second box body is fixed inside the ship's cabin and is provided with water inlets at both ends.

10. An unmanned boat, characterized in that, including an in-cabin drainage device for an unmanned ship according to any one of claims 1 to 9.

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