Underwater semi-open space sealing device

Abstract

The invention relates to the technical field of underwater equipment, in particular to an underwater semi-open type space sealing device which comprises a box body, an upper cover, a steering engine, racks and a gear, the steering engine, the racks and the gear are installed in the box body, the gear is connected with the steering engine, the four racks are perpendicularly arranged and all connected with the gear, and the thickness of the tail ends of the racks gradually becomes thicker from outside to inside. The vertical section of the upper cover is of an inverted-U-shaped structure, grooves corresponding to the four racks are formed in the four side walls of the upper cover respectively, when the steering engine drives the gear to rotate and the racks move forwards, the tail ends of the four racks can stretch into the grooves of the upper cover, and in the process that the four racks enter the grooves of the upper cover, the racks become thicker and thicker. As the rack is always on the same horizontal plane, the upper cover is driven to press downwards, four downward pressures are applied to the upper cover, and the upper cover and the box body are tightly pressed together. According to the invention, a good sealing effect of an underwater semi-open space can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of underwater equipment, and in particular to an underwater semi-open space sealing device. Background Art

[0002] Underwater submersibles often need to carry various equipment to meet the needs of different scenarios. Some equipment can be fixed inside the submersible for operation, while some equipment needs to be released to the external environment. This requires a semi-open space on the submersible, where the object to be released is placed. When released, the space comes into contact with the water or air to release the object. Due to the needs of the navigation and working state of the submersible, the hatch needs to be closed after the object is released to maintain the dynamic shape of the submersible. When the hatch is closed, the insufficient pressure between the hatch and the cabin can easily lead to water leakage, affecting the operation of the submersible. Therefore, it is very necessary to develop a sealing device for the semi-open space. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an underwater semi-open space sealing device, which can achieve a good sealing effect of the underwater semi-open space.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] An underwater semi-open space sealing device comprises a box body, an upper cover, and a steering gear, a rack and a gear installed in the box body, wherein the gear is connected to the steering gear, and four racks are arranged perpendicular to each other and are connected to the gears. The thickness of the end of the rack gradually increases from the outside to the inside. The vertical section of the upper cover is an inverted U-shaped structure, and grooves corresponding to the four racks are respectively opened on its four side walls. The steering gear drives the gear to rotate, and when the rack moves forward, the ends of the four racks will extend into the grooves of the upper cover. In the process of the four racks entering the grooves of the upper cover, the racks always move on a horizontal plane. As the racks become thicker, they will drive the upper cover to be pressed downward, exerting four downward pressures on the upper cover, and pressing the upper cover and the box body tightly together.

[0006] Furthermore, the four racks are clamped in the box through fixing members, so that the racks can only reciprocate in one direction.

[0007] Furthermore, the upper cover is provided with an opening and closing mechanism for opening and closing operations, and a mechanical manual or spring-assisted opening and closing mechanism is adopted, which has a simple structure and is convenient and quick to operate.

[0008] Furthermore, the upper cover can be completely buckled onto the box body, and a sealing gasket is placed on the buckled contact surface.

[0009] Furthermore, a drainage hole is provided inside the box body. After the upper cover is pressed against the box body, the drainage hole starts to work until the water in the space is drained. The drainage operation is implemented by installing a pressure sensor inside the box body, the pressure sensor is connected to the single-chip microcomputer, and a solenoid valve is placed in the drainage hole as an actuator. The pressure sensor detects the pressure change inside the box body, and the single-chip microcomputer control system collects the pressure signal. When the pressure value reaches the set threshold, the single-chip microcomputer controls the solenoid valve to open, so that the water inside the box body is discharged through the drainage hole. Until the pressure is restored, the solenoid valve is closed.

[0010] The present invention adopts a design in which the thickness of the end of the rack gradually increases from the outside to the inside, so that when the rack enters the groove of the upper cover, it will exert a downward pressure on the upper cover, pressing the upper cover and the box body tightly together, thereby achieving a good sealing effect of the underwater semi-open space. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a partial structural schematic diagram of an underwater semi-open space sealing device according to an embodiment of the present invention;

[0012] Figure 2 A cross-sectional view of an underwater semi-open space sealing device according to an embodiment of the present invention;

[0013] In the figure: 1-servo gear; 2-rack; 3-sealing gasket; 4-gear; 5-fixing part; 6-upper cover; 7-box. DETAILED DESCRIPTION

[0014] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0015] like Figure 1-Figure 2As shown, an underwater semi-open space sealing device according to an embodiment of the present invention comprises a steering gear 1, a rack 2, a sealing gasket 3, a gear 4, a fixing member 5, an upper cover 6, and a box body 7. The steering gear 1 is fixed at the center of the upper end of the box body 7 and is directly connected to the gear 4. Four racks 2 are arranged perpendicularly to each other around the gear 4, and the four racks 2 are all meshed with the gear 4. The four racks 2 are horizontally clamped in the box body 7 by the fixing members 5, respectively, so that the racks 2 can only reciprocate in one direction. The fixing member 5 is connected to the side wall of the box body 7 through a bracket, and the bracket can be An L-shaped bracket is adopted, and the vertical section of the upper cover 6 is an inverted U-shaped structure. The four side walls are respectively provided with grooves corresponding to the four racks 2, and the ends of the racks 2 can extend into the grooves. The thickness of the ends of the racks 2 is variable, gradually becoming thicker from the outside to the inside. The thin racks 2 can make the racks smoothly enter the grooves of the upper cover 6. During the entry process, as the racks become thicker and thicker, since the racks are always on a horizontal plane, they will drive the upper cover 6 to be pressed down. At this time, the four racks will apply 4 downward pressures to the upper cover 6, thereby pressing the upper cover 6 and the box body 7 tightly together.

[0016] In order to ensure the sealing effect, the rack can smoothly enter the groove of the upper cover 6, the depth of the groove is slightly larger than the length of the thickness change section at the end of the rack 2, and after the upper cover 6 is connected to the box body 7 through the opening and closing mechanism, the horizontal height of the lower bottom surface of the end of the rack (the section with the smallest thickness) is slightly higher than the inner bottom surface of the groove.

[0017] In order to facilitate the opening and closing operation of the upper cover 6, an opening and closing mechanism is provided on the upper cover 6 to enable the opening and closing operation.

[0018] In order to further improve the sealing effect between the upper cover 6 and the box body 7, the upper cover 6 can be completely buckled onto the box body 7, and a sealing gasket 3 is placed on the buckled contact surface.

[0019] In order to drain the water in the box 7, there is a drainage hole inside the box 7. After the upper cover 6 is pressed against the box 7, the drainage hole starts to work until the water in the space is drained. Specifically, a pressure sensor is installed inside the box 7, the pressure sensor is connected to the single-chip microcomputer, and a solenoid valve is installed in the drainage hole as an actuator. The pressure sensor detects the pressure change inside the box, and the single-chip microcomputer control system collects the pressure signal. When the pressure value reaches the set threshold, the single-chip microcomputer controls the solenoid valve to open, so that the water inside the box is discharged through the drainage hole. Until the pressure is restored, the solenoid valve is closed.

[0020] In this specific implementation, the steering gear 1, the gear 4, and the rack 2 are all fixed together with the box body 7. After the upper cover 6 is connected to the box body 7 through the opening and closing mechanism, the steering gear 1 drives the gear 4 to rotate, and the rack 2 moves forward and is inserted into the groove of the upper cover 6. Since the rack gradually increases in thickness from the outside to the inside, it enters the groove of the upper cover 6 and exerts a downward force on the upper cover 6. After the rack completely enters the groove, it will generate sufficient downward pressure to press the upper cover and the box body tightly, thereby achieving a sealing effect.

[0021] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. An underwater semi-open space sealing device, characterized in that: It includes a box body, an upper cover, and a steering gear, a rack and a gear installed in the box body. The gear is connected to the steering gear. Four racks are arranged perpendicular to each other and are connected to the gears. The thickness of the end of the rack gradually increases from the outside to the inside. The vertical section of the upper cover is an inverted U-shaped structure. The four side walls are respectively provided with grooves corresponding to the four racks. The steering gear drives the gear to rotate. When the rack moves forward, the ends of the four racks will extend into the grooves of the upper cover.

2. An underwater semi-open space sealing device according to claim 1, characterized in that: In the process of the four racks entering the grooves of the upper cover, the racks always move on a horizontal plane. As the racks become thicker, they will drive the upper cover to be pressed down, pressing the upper cover and the box body tightly together.

3. An underwater semi-open space sealing device as claimed in claim 1, characterized in that: The four racks are clamped in the box through fixing pieces so that the racks can only reciprocate in one direction.

4. An underwater semi-open space sealing device as claimed in claim 1, characterized in that: The upper cover is provided with an opening and closing mechanism.

5. An underwater semi-open space sealing device as claimed in claim 1, characterized in that: The upper cover can be completely buckled onto the box body, and a sealing gasket is placed on the buckled contact surface.

6. An underwater semi-open space sealing device as claimed in claim 1, characterized in that: A drainage hole is arranged inside the box body. After the upper cover is pressed tightly against the box body, the drainage hole starts to work until the water in the space is drained.

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