Lifting type air-water separation coaxial air inlet device

Abstract

This invention discloses a lifting-type air-water separation coaxial air intake device, including an air-water separation air intake cap, a vehicle body sealing cavity, an upper inner air passage, a lower inner air passage, and a hydraulic cylinder. The air-water separation air intake cap includes an intake pipe and a connecting pipe, with the connecting pipe located at the bottom of the intake pipe. The lower end of the connecting pipe is inserted into the vehicle body sealing cavity and has a clearance fit with the upper port of the vehicle body sealing cavity. A partition is provided in the upper part of the intake pipe. An upper inner air passage is provided at the vent hole on the bottom surface of the partition. A lower inner air passage is provided in the vehicle body sealing cavity, with the lower end of the upper inner air passage and the upper end of the lower inner air passage having a clearance fit. The hydraulic cylinder can drive the upper inner air passage to slide along the lower inner air passage. An air outlet I and an air outlet II are provided on the side wall of the vehicle body sealing cavity, and an air outlet III is provided on the side wall of the lower inner air passage. The air outlet III is connected to the air outlet II through a connecting pipe. This invention reduces the water content in the air intake of amphibious vehicles when navigating on water, and also solves the problem of mutual air competition between the engine and the NBC protection device.

Description

Technical Field

[0001] This invention relates to a lifting-type air-water separation coaxial air intake device, belonging to the technical field of amphibious vehicles. Background Technology

[0002] Currently, the air intakes for engines and NBC protection systems in domestic amphibious vehicles all use a cap-type structure. During high-speed navigation, this generates a large amount of water spray, especially at sea with wind and waves. A significant amount of seawater and water vapor enters the air filter and NBC protection system through the cap-type air intake, making components such as the filter canister and turbocharger prone to corrosion and damage. This severely shortens the maintenance cycle of the air filter element, failing to meet maintenance requirements. Furthermore, since the NBC protection system draws air from the engine's air intake, there is a competition for air between the NBC protection system and the engine in amphibious conditions, preventing the vehicle from establishing overpressure protection. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a liftable air-water separation coaxial air intake device that can reduce the water content in the air intake of amphibious vehicles during water navigation, while simultaneously resolving the issue of air competition between the engine and the NBC protection device.

[0004] The technical solution adopted in this invention is: a lifting-type air-water separation coaxial air intake device, including an air-water separation air intake cap, a vehicle body sealing cavity, an upper inner air passage, a lower inner air passage, and a hydraulic cylinder; the air-water separation air intake cap includes an air intake pipe and a connecting pipe, the connecting pipe is located at the bottom of the air intake pipe, and the lower end of the connecting pipe is inserted into the vehicle body sealing cavity and clearance-fitted with the upper port of the vehicle body sealing cavity; a partition is provided in the upper part of the air intake pipe, the partition dividing the air intake hole of the air intake pipe into two parts; an upper ventilation hole is provided on the bottom surface of the partition. The upper inner air passage has its axis parallel to the axis of the connecting pipe. The vehicle body sealing cavity is provided with a lower inner air passage, and the lower end of the upper inner air passage is clearance-fitted with the upper end of the lower inner air passage. The hydraulic cylinder is installed in the vehicle body sealing cavity, and the piston rod end of the hydraulic cylinder is connected to the upper inner air passage, which can drive the upper inner air passage to slide along the lower inner air passage. The side wall of the vehicle body sealing cavity is provided with an air outlet I and an air outlet II, and the side wall of the lower inner air passage is provided with an air outlet III, which is connected to the air outlet II through a connecting pipe.

[0005] Furthermore, the air-water separation inlet cap is made of aluminum alloy. The air inlet pipe of the air-water separation inlet cap includes a filter screen, a top plate, and a bottom plate. The top plate is circular, and the bottom plate is annular. The top plate and the bottom plate are coaxially arranged, and the outer circles of the top plate and the bottom plate are connected by the filter screen. An inertial separation device is provided inside the air-water separation inlet cap. The mesh of the filter screen is an air inlet hole. The partition is arranged parallel to the bottom plate.

[0006] Furthermore, the inertial separation device includes multiple outer semicircular tubes and multiple inner semicircular tubes; the two ends of the outer semicircular tubes are respectively installed on the top plate and the bottom plate, and the two ends of the inner semicircular tubes are respectively installed on the top plate and the bottom plate; the multiple outer semicircular tubes are evenly arranged along the circumference, and the multiple inner semicircular tubes are evenly arranged along the circumference; the two sides of any inner semicircular tube are respectively placed inside the two adjacent outer semicircular tubes; a semicircular through hole is provided on the bottom plate and the partition plate corresponding to the inner semicircular tube, and the inner semicircular tube is welded into the semicircular through hole.

[0007] Furthermore, it also includes a sealing bellows sleeve, which is fitted onto the connecting pipe. The upper end of the sealing bellows sleeve is connected to the air intake pipe, and the lower end is fixedly installed on the top of the vehicle body sealing cavity.

[0008] Furthermore, the sealing bellows sleeve adopts a tubular structure made of silicone rubber material, and multiple steel rings are provided on the inner wall of the sealing bellows sleeve along the axis of the sealing bellows sleeve.

[0009] Furthermore, it also includes a bracket, on which the bottom of the hydraulic cylinder is mounted. The bracket is installed inside the sealed cavity of the vehicle body, and a lower inner air passage is installed on the bracket, with the hydraulic cylinder located in the lower inner air passage.

[0010] Furthermore, the bracket adopts an aluminum alloy welded structure, which includes a fixed base and four legs. The fixed base is a ring-shaped plate structure, and the four legs are installed on the outer circle of the fixed base. The four legs are evenly arranged along the circumference. The bottom of the legs is provided with waist-shaped mounting holes.

[0011] Furthermore, the air-water separation air intake cap, the vehicle body sealing cavity, the upper inner air passage, the lower inner air passage, the hydraulic cylinder, and the sealing bellows are coaxially arranged.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This invention incorporates an inertial separation device in the air-water separation intake cap, thereby enhancing the air-water separation function. This solves the problem of water easily entering the engine and NBC protection devices of amphibious vehicles during high-speed navigation. It also adds a land-based primary filtration function, effectively preventing corrosion and damage to the filter canister and turbocharger motor, increasing the maintenance cycle of the air filter element, and meeting the requirements of the entire vehicle.

[0014] 2. The partition of the present invention achieves air-water separation by dividing the air intake cap into upper and lower layers, forming two independent gas channels. This integrates the NBC protection and engine air intake, reducing the number of air intakes on the top of the amphibious vehicle. This not only reduces production costs and improves the overall water safety of the vehicle, but also facilitates the overall vehicle layout and enhances the overall aesthetics.

[0015] 3. This invention uses a partition to achieve air-water separation, with the upper and lower layers of the air intake cap forming two independent gas channels. This solves the problem of air snatching caused by the engine intake back pressure being far greater than the NBC (nuclear, biological, and chemical) protection intake back pressure. In addition, the air intake cap can automatically rise and fall according to different working conditions on land and water. It uses a cylinder as the lifting power, which is fast, has great thrust, and is stable and reliable. When the air intake cap rises during water navigation, it can not only reduce the water vapor in the air, but also prevent water from entering the engine when the vehicle sways laterally or plunges.

[0016] 4. The vehicle body sealing cavity, air-water separation air intake cap, sealing corrugated sleeve, upper inner air passage, lower inner air passage and hydraulic cylinder of the present invention are coaxial; the air intake cap and inner air passage rise and fall together with the hydraulic cylinder, and the structure is compact; the air-water separation air intake cap and the vehicle body sealing cavity are connected by a sealing corrugated sleeve, which effectively solves the problems of poor sealing and water leakage and mutual jamming.

[0017] 5. This invention can adapt to level 5 winds and level 4 waves at sea. When used in sandy environments on land, the filter and inertial separation device can filter large particles and some dust. It can also adapt to the use requirements of environments down to -43 degrees Celsius and can be widely used in structures with air intake requirements. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the invention in its raised state.

[0019] Figure 2 This is a structural diagram of the descending state of the present invention.

[0020] Figure 3 This is a perspective view of the air-water separation inlet cap of the present invention;

[0021] Figure 4 This is a cross-sectional view of the air-water separation inlet cap of the present invention.

[0022] Figure 5 This is a structural diagram of the inertial separation device of the present invention.

[0023] Figure 6 This is a perspective view of the sealing corrugated sleeve of the present invention.

[0024] Figure 7 This is a perspective view of the mounting base of the present invention.

[0025] Figure 8 This is a three-dimensional view of the internal airway of the present invention.

[0026] Figure 9 This is a three-dimensional view of the lower internal airway of the present invention.

[0027] Figure 10 This is a perspective view of the bracket of the present invention. Detailed Implementation

[0028] The invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1-10 As shown, the present invention comprises an air-water separation air inlet cap 1, a sealing corrugated sleeve 2, a mounting base 3, a vehicle body sealing cavity 4, an upper inner air passage 5, a lower inner air passage 6, a hydraulic cylinder 7, a connecting pipe 8, and a bracket 9.

[0030] The air-water separation inlet cap 1 is mainly made of aluminum alloy. The air-water separation inlet cap 1 includes an inlet pipe and a connecting pipe. A baffle 14 is provided in the upper part of the inlet pipe. The inlet pipe includes a filter screen 11, a top plate, and a bottom plate; the top plate is circular, and the bottom plate is annular, with the top and bottom plates coaxially arranged. The outer circles of the top and bottom plates are connected by the filter screen 11. An inertial separation device 12 is provided inside the air-water separation inlet cap; the mesh of the filter screen 11 serves as the inlet hole; the baffle 14 is arranged parallel to the bottom plate, dividing the inlet hole into two parts. An upper inner air passage 5 is provided at the vent on the bottom surface of the baffle 14, and the axis of the upper inner air passage 5 is parallel to the axis of the connecting pipe 13. The upper inner air passage 5 is composed of multiple inner air passages 15 connected coaxially in series, with the opposite ends of two adjacent inner air passages 15 connected by a connecting flange 17.

[0031] The inertial separation device 12 includes multiple outer semicircular tubes 19 and multiple inner semicircular tubes 18. The two ends of the outer semicircular tubes 19 are respectively mounted on a top plate and a bottom plate, and the two ends of the inner semicircular tubes 18 are respectively mounted on a top plate and a bottom plate. The multiple outer semicircular tubes 19 are evenly arranged along the circumference, and the multiple inner semicircular tubes 18 are also evenly arranged along the circumference, with the inner semicircular tubes 18 and the outer semicircular tubes 19 coaxial. The semicircular opening of the cross-section of the inner semicircular tube 18 faces outward, and the semicircular opening of the cross-section of the outer semicircular tube 19 faces inward. The two sides of any inner semicircular tube 18 are respectively placed inside the two adjacent outer semicircular tubes 19. A semicircular through hole is provided on the bottom plate and the partition plate 14 corresponding to the location of the inner semicircular tube, and the inner semicircular tube 18 is welded into the semicircular through hole. In water operation, air and water enter the air-water separator intake cap 1 from the side. The water rushes against the inner wall of the inner semi-circular tube 18 of the inertial separation device 12 and flows down along the inner wall. The air is turned by the suction of the engine and enters the air duct to flow to the air filter.

[0032] A connecting pipe 13 is located at the bottom of the intake pipe, with its lower end inserted into the vehicle body sealing cavity and clearance-fitted with the upper port of the vehicle body sealing cavity 4. A reinforcing rib 16 is provided between the connecting pipe 13 and the upper inner air passage 5. A sealing bellows sleeve 2 is fitted onto the connecting pipe 13, with its upper end connected to the intake pipe and its lower end fixedly installed on the top of the vehicle body sealing cavity 4. The sealing bellows sleeve 2 is a tubular structure made of silicone rubber, with multiple steel rings along its axis on the inner wall. The sealing bellows sleeve 2 exhibits good pressure resistance and resilience, excellent wear resistance, and resistance to seawater corrosion, while maintaining its stability within a temperature range of -60℃ to 200℃. The sealing corrugated sleeve 2 is connected to the air-water separation inlet cap 1 and the mounting base 3 respectively by clamps. The mounting base 3 is fixedly installed on the top of the vehicle body sealing cavity 4. The sealing corrugated sleeve 2 can be extended and shortened accordingly according to the rise and fall of the air-water separation inlet cap 1 to ensure the seal between the air-water separation inlet cap 1 and the vehicle body sealing cavity 4.

[0033] The vehicle body sealing cavity is equipped with a bracket 9, a hydraulic cylinder 7, and a lower inner air passage 6. The lower end of the upper inner air passage 5 is clearance-fitted with the upper end of the lower inner air passage 6. The bracket 9 is installed at the bottom of the vehicle body sealing cavity, and the hydraulic cylinder 7 and the lower inner air passage 6 are installed on the bracket 9. The hydraulic cylinder 7 is located in the lower inner air passage 6 and is coaxial with the lower inner air passage 6. The piston rod end of the hydraulic cylinder 6 is connected to the upper inner air passage 5, which can drive the upper inner air passage 5 to slide along the lower inner air passage 6; thereby realizing the movement of the water separation air intake cap 1. The side wall of the vehicle body sealing cavity is provided with an air outlet I41 and an air outlet II42. The bottom of the side wall of the lower inner air passage is provided with an air outlet III. The air outlet III61 is connected to the air outlet II42 through a connecting pipe 8. The upper inner air passage 5 and the lower inner air passage 6 are cylindrical structures made of aluminum alloy.

[0034] The hydraulic cylinder 7 is a cylindrical metal component that guides the piston in linear reciprocating motion within the cylinder. It features rapid movement, high thrust, and stable reliability. It can be ordered from the market according to requirements such as thrust and stroke. The hydraulic cylinder 7 uses a pneumatic cylinder with a maximum working stroke of 400mm and an intake pressure of 1.4MPa. The bracket 9 adopts an aluminum alloy welded structure and includes a fixed base 91 and four support legs 92. The fixed base 91 is an annular plate structure, and the four support legs 92 are installed on the outer circle of the fixed base, evenly arranged along the circumference. The bottom of the support legs has a waist-shaped mounting hole 93. The waist-shaped mounting hole 93 allows the bracket 9 to be adjusted forward and backward and left and right, ensuring the coaxiality of the hydraulic cylinder 7 and the air-water separator intake cap.

[0035] In use, the air intake pipe, upper inner air passage 5, lower inner air passage 6, and connecting pipe 8 of the air-water separation air intake cap 1 together constitute the air intake of the three-proof device. The air intake pipe, connecting pipe 13, vehicle body sealing cavity 4, and air outlet 141 of the air-water separation air intake cap 1 constitute the engine air intake. The air-water separation air intake cap 1, vehicle body sealing cavity 4, upper inner air passage 5, lower inner air passage 6, hydraulic cylinder 7, and sealing corrugated sleeve 2 are coaxially arranged.

Claims

1. A lifting-type coaxial air intake device for gas-water separation, characterized in that: The system includes an air-water separation inlet cap, a vehicle body sealing cavity, an upper inner air passage, a lower inner air passage, and a hydraulic cylinder. The air-water separation inlet cap includes an inlet pipe and a connecting pipe, with the connecting pipe located at the bottom of the inlet pipe. The lower end of the connecting pipe is inserted into the vehicle body sealing cavity and has a clearance fit with the upper port of the vehicle body sealing cavity. A partition is provided in the upper part of the inlet pipe, dividing the inlet hole of the inlet pipe into two parts. An upper inner air passage is provided at the vent hole on the bottom surface of the partition, and the axis of the upper inner air passage is parallel to the axis of the connecting pipe. A lower inner air passage is provided in the vehicle body sealing cavity, with a clearance fit between the lower end of the upper inner air passage and the upper end of the lower inner air passage. The hydraulic cylinder is installed in the vehicle body sealing cavity, and the piston rod end of the hydraulic cylinder is connected to the upper inner air passage, enabling the upper inner air passage to slide along the lower inner air passage. An outlet hole I and an outlet hole II are provided on the side wall of the vehicle body sealing cavity, and an outlet hole III is provided on the side wall of the lower inner air passage. The outlet hole III is connected to the outlet hole II through a connecting pipe. The air-water separator intake cap is made of aluminum alloy. The intake pipe of the air-water separator intake cap includes a filter screen, a top plate, and a bottom plate. The top plate is circular, and the bottom plate is annular. The top plate and the bottom plate are coaxially arranged, and the outer circles of the top plate and the bottom plate are connected by the filter screen. An inertial separation device is provided inside the air-water separator intake cap. The mesh of the filter screen is the air inlet. The baffle is arranged parallel to the bottom plate. The inertial separation device includes multiple outer semicircular tubes and multiple inner semicircular tubes; the two ends of the outer semicircular tubes are respectively installed on the top plate and the bottom plate, and the two ends of the inner semicircular tubes are respectively installed on the top plate and the bottom plate; the multiple outer semicircular tubes are evenly arranged along the circumference, and the multiple inner semicircular tubes are evenly arranged along the circumference; the two sides of any inner semicircular tube are respectively placed inside the two adjacent outer semicircular tubes; a semicircular through hole is provided on the bottom plate and the partition plate corresponding to the inner semicircular tube, and the inner semicircular tube is welded into the semicircular through hole.

2. The lifting-type gas-water separation coaxial air intake device according to claim 1, characterized in that: It also includes a sealing bellows sleeve, which is fitted onto the connecting pipe. The upper end of the sealing bellows sleeve is connected to the air intake pipe, and the lower end is fixedly installed on the top of the vehicle body sealing cavity.

3. The lifting-type gas-water separation coaxial air intake device according to claim 2, characterized in that: The sealing bellows sleeve is a tubular structure made of silicone rubber, with multiple steel rings on the inner wall of the sealing bellows sleeve along its axis.

4. The lifting-type gas-water separator coaxial air intake device according to claim 1, characterized in that: It also includes a bracket, the bottom of which is mounted on the bracket. The bracket is installed inside the sealed cavity of the vehicle body, and a lower inner air passage is installed on the bracket. The hydraulic cylinder is located in the lower inner air passage.

5. The lifting-type gas-water separation coaxial air intake device according to claim 4, characterized in that: The bracket adopts an aluminum alloy welded structure. The bracket includes a fixed base and four legs. The fixed base is a ring-shaped plate structure. The four legs are installed on the outer circle of the fixed base and are evenly arranged along the circumference. The bottom of the legs is provided with waist-shaped mounting holes.

6. The lifting-type gas-water separator coaxial air intake device according to claim 2, characterized in that: The air-water separation air intake cap, vehicle body sealing cavity, upper inner air passage, lower inner air passage, hydraulic cylinder and sealing bellows are coaxially arranged.

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