A drainage device with an integrated check valve

Abstract

This utility model provides a drainage device with an integrated one-way valve, relating to the field of ship drainage devices. It includes: a drainage valve body with a duckbill valve installed at its right end; a spherical valve disc inside the drainage valve body, and valve disc limiting blocks fixedly connected in a ring array inside the right end of the drainage valve body; and an annular spherical sealing gasket fixedly connected to the spherical surface on the left side inside the drainage valve body. This utility model, through the duckbill valve, eliminates the need for manual intervention during opening and closing, saving time and effort, and fundamentally preventing the risk of external water backflow due to human negligence in closing the valve. The coordinated design of the drainage valve body, spherical valve disc, and annular spherical sealing gasket constitutes a reliable secondary sealing mechanism. It solves the problem that existing ship drainage valves rely on manual opening and closing, which is not only time-consuming and labor-intensive but also carries the risk of external water backflow into the cabin due to human negligence in forgetting to close the valve, creating a safety hazard.

Description

Technical Field

[0001] This utility model relates to the field of ship drainage device technology, and in particular to a drainage device with an integrated one-way valve. Background Technology

[0002] During ship navigation and berthing, water can accumulate inside the ship's compartments (such as engine room, cargo hold, and bow and stern compartments) for various reasons, such as rainwater intrusion, equipment condensation, and waves on the deck. This accumulated water not only corrodes the hull structure and affects the normal operation of equipment, but also threatens the ship's stability and navigational safety. Therefore, timely and effective removal of accumulated water from the compartments is a crucial aspect of ship design and maintenance.

[0003] Although existing ships are equipped with drain outlets for discharging water accumulated in the tanks, the valves on the drain outlets need to be opened manually when draining water. The opening and closing of the valves depends entirely on manual operation. This operation method is not only time-consuming and labor-intensive, but also carries the risk of forgetting to close the valves due to human negligence, which may cause external water to backflow into the tanks and create safety hazards. Utility Model Content

[0004] This utility model relates to a drainage device with an integrated one-way valve, which solves the problem that the existing ship drainage outlet valves rely on manual opening and closing. This operation method is not only time-consuming and labor-intensive, but also poses a risk that external water may flow back into the cabin due to human negligence and forget to close the valve, creating a safety hazard.

[0005] In a first aspect, this utility model provides a drainage device with an integrated one-way valve, specifically comprising: a drainage valve body, wherein a mounting base is fixedly connected to the left end of the drainage valve body; a duckbill valve is installed at the right end of the drainage valve body; a spherical valve disc is provided inside the drainage valve body, and valve disc limiting blocks are fixedly connected in a ring array inside the right end of the drainage valve body; and an annular spherical sealing gasket is fixedly connected to the spherical surface on the left side inside the drainage valve body.

[0006] Furthermore, the mounting base has mounting holes, and the mounting base is installed at the ship's drain outlet via the mounting holes and bolts.

[0007] Furthermore, an annular sealing gasket is provided on the left end face of the mounting base; when the mounting base is installed with the ship's drain outlet, the annular sealing gasket is in close contact with the plane of the ship's drain outlet.

[0008] Furthermore, a first flange is provided on the outside of the right end of the drain valve body; a second flange is provided on the left end of the duckbill valve, and the second flange is connected to the first flange by bolts.

[0009] Furthermore, the spherical valve disc has a hollow spherical structure and is a movable part.

[0010] Furthermore, the valve disc limiting block has a chamfer on its left side, and the chamfer edge on the valve disc limiting block has a rounded corner.

[0011] Furthermore, when the drain valve body and the duckbill valve are in the draining state, the spherical valve disc is located inside the drain valve body on the right side, and the outer circumferential surface of the spherical valve disc is in close contact with the chamfered bevel on the valve disc limiting block, and the right end slit of the duckbill valve is in an expanded state.

[0012] This utility model provides a drainage device with an integrated one-way valve, which has the following beneficial effects:

[0013] This invention achieves automatic control and efficient sealing of cabin drainage through the design of a duckbill valve. When there is water in the cabin and the ship is sailing, the water pressure inside the cabin is higher than the pressure in the low-pressure area of ​​the external water flow. This pressure difference pushes the ball valve disc to move to the right, allowing the accumulated water to flow into the duckbill valve from all sides. Under the action of water pressure, the originally flattened outlet of the duckbill valve is opened, and the accumulated water is discharged smoothly. After the drainage is completed or the pressure difference disappears, the duckbill valve closes quickly due to its own elasticity, restoring the sealed state. The whole process does not require manual intervention, which not only saves time and effort, but also fundamentally eliminates the risk of external water backflow caused by human negligence in not closing the valve.

[0014] This invention, through the combined design of the drain valve body, the spherical valve disc, and the annular spherical sealing gasket, constitutes a reliable secondary sealing mechanism. When the duckbill valve is stuck by a foreign object and cannot close, the backflow of water will push the spherical valve disc to the left, so that its spherical surface fits tightly against the concave surface of the annular spherical sealing gasket, forming an effective emergency sealing barrier. This design fundamentally eliminates water ingress accidents and achieves double insurance.

[0015] Other advantages, objectives and features of this invention will be apparent in part from the description which follows, and in part from the understanding of those skilled in the art through study and practice of this invention. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the accompanying drawings will be briefly described below.

[0017] In the attached diagram:

[0018] Figure 1 A three-dimensional structural schematic diagram of this application is shown;

[0019] Figure 2 A structural schematic diagram of this application from a rear view is shown;

[0020] Figure 3 The diagram shows a partial cross-sectional view of the drain valve body, spherical valve disc, valve disc limiting block, annular spherical sealing gasket, and duckbill valve of this application.

[0021] Figure 4 A schematic diagram of the structure of the drain valve body, first flange, ball valve disc, and valve disc limiting block of this application is shown;

[0022] Figure 5 A partial cross-sectional structural diagram of the drain valve body of this application is shown.

[0023] List of reference numerals

[0024] 1. Drain valve body; 101. Mounting base; 102. Mounting hole; 103. Annular sealing gasket; 104. First flange; 105. Spherical valve disc; 106. Valve disc limiting block; 107. Annular spherical sealing gasket;

[0025] 2. Duckbill valve; 201. Second flange. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1: Please refer to Figures 1 to 5 :

[0028] This utility model proposes a drainage device with an integrated one-way valve, comprising: a drainage valve body 1, with a mounting base 101 fixedly connected to the left end of the drainage valve body 1; a duckbill valve 2 installed on the right end of the drainage valve body 1; a spherical valve disc 105 disposed inside the drainage valve body 1, and valve disc limiting blocks 106 fixedly connected in a ring array inside the right end of the drainage valve body 1; and an annular spherical sealing gasket 107 fixedly connected to the spherical surface on the left side inside the drainage valve body 1.

[0029] By adopting the above technical solution, automatic control and efficient sealing of the ship's hull drainage are achieved, and the entire drainage process requires no manual intervention, which not only saves time and effort, but also fundamentally eliminates the risk of external water backflow caused by human negligence in failing to close the valve. At the same time, the drainage valve body 1, the spherical valve disc 105 and the annular spherical sealing gasket 107 constitute a reliable secondary sealing mechanism. When the duckbill valve 2 is stuck by a foreign object and cannot close, the backflow of water will push the spherical valve disc 105 to the left, so that its spherical surface fits tightly against the concave surface of the annular spherical sealing gasket 107, forming an effective emergency sealing barrier, fundamentally preventing water ingress accidents and achieving double insurance.

[0030] The mounting base 101 has a mounting hole 102, and the mounting base 101 is installed at the ship's drain outlet through the mounting hole 102 and bolts; an annular sealing gasket 103 is provided on the left end face of the mounting base 101; when the mounting base 101 is installed with the ship's drain outlet, the annular sealing gasket 103 is in close contact with the plane of the ship's drain outlet, which improves the sealing performance between the drainage device and the ship's drain outlet.

[0031] A first flange 104 is provided on the outside of the right end of the drain valve body 1; a second flange 201 is provided on the left end of the duckbill valve 2, and the second flange 201 is connected to the first flange 104 by bolts.

[0032] The spherical valve disc 105 has a hollow spherical structure and is a moving part. The spherical valve disc 105 is made of ABS plastic, which has excellent resistance to salt spray, seawater and various chemicals, fundamentally eliminating the problem of rust and avoiding the impact of valve disc surface corrosion on sealing performance, thus greatly improving the reliability in non-drainage state.

[0033] Example 2, based on Example 1, such as Figure 5 As shown, the valve disc limiting block 106 has a chamfer on the left side, and the chamfer edge on the valve disc limiting block 106 has a rounded corner to avoid damage to the spherical surface of the spherical valve disc 105 due to sharp edges, thus improving the reliability and service life of the spherical valve disc 105 during sealing.

[0034] When the drain valve body 1 and the duckbill valve 2 are in the draining state, the ball valve disc 105 is located inside the drain valve body 1 on the right side, and the outer peripheral surface of the ball valve disc 105 is in close contact with the chamfered bevel on the valve disc limiting block 106, and the right end slit of the duckbill valve 2 is in the expanded state.

[0035] The working principle of this embodiment is as follows: The working principle of this utility model is based on the pressure difference on both sides of the drainage device and the opening and closing of the duckbill valve 2 to achieve intelligent opening and closing. Specifically, when there is water in the cabin and the ship starts sailing, the water pressure in the cabin is higher than the pressure of the low-pressure area of ​​the external water flow. This pressure difference pushes the spherical valve disc 105 to move to the right. The spherical valve disc 105 is located on the right side inside the drainage valve body 1. The valve disc limiting block 106 limits the spherical valve disc 105, and the accumulated water flows from all around the spherical valve disc 105 (valve disc limiting block 106). Water enters through the gap between blocks 106. The pressure of the accumulated water forces the flattened outlet of the duckbill valve 2 open, forming a channel for the water to drain smoothly. Once the drainage is finished or the pressure difference disappears, the duckbill valve 2 closes quickly under its own elasticity, and the outlet of the duckbill valve 2 is tightly sealed, restoring the sealed state. This ensures that the water "only flows out and does not flow in," thus eliminating the need for manual opening and closing of the valve, saving time and effort. It also effectively avoids the safety hazard of external water flowing back into the cabin due to personnel negligence in forgetting to close the valve.

[0036] When the ship is stationary, the duckbill valve 2 is always closed, effectively isolating external water and achieving normal closure. When the duckbill valve 2 is stuck by foreign objects and cannot close tightly, the backflow of water pushes the spherical valve disc 105 to the left, and the spherical surface of the spherical valve disc 105 will come into close contact with the concave surface of the annular spherical sealing gasket 107, achieving effective sealing. Therefore, with the drain valve body 1, the spherical valve disc 105 and the annular spherical sealing gasket 107, a reliable watertight barrier can also be formed, fundamentally preventing water ingress accidents and forming double insurance.

[0037] The following points should be noted in this article:

[0038] 1. The accompanying drawings of this utility model only relate to the structures involved in this utility model; other structures can be referred to conventional designs.

[0039] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0040] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A drain device incorporating a one-way valve, comprising: A drain valve body (1) is fixedly connected to a mounting base (101) at its left end; characterized in that a duckbill valve (2) is installed at the right end of the drain valve body (1); a spherical valve disc (105) is provided inside the drain valve body (1), and a valve disc limiting block (106) is fixedly connected in an annular array inside the right end of the drain valve body (1); an annular spherical sealing gasket (107) is fixedly connected to the spherical surface on the left side inside the drain valve body (1).

2. The drain device of claim 1, wherein: The mounting base (101) has a mounting hole (102), and the mounting base (101) is installed at the ship's drain outlet through the mounting hole (102) and bolts.

3. The drain device of claim 2, wherein: An annular sealing gasket (103) is provided on the left end face of the mounting base (101); when the mounting base (101) is installed with the ship's drain outlet, the annular sealing gasket (103) is in close contact with the plane of the ship's drain outlet.

4. The drain device of claim 1, wherein: The drain valve body (1) has a first flange (104) on the outside of the right end; the duckbill valve (2) has a second flange (201) on the left end, and the second flange (201) is connected to the first flange (104) by bolts.

5. The drain device of claim 1, wherein: The spherical valve disc (105) is a hollow sphere structure and is a movable part.

6. The drain device of claim 1, wherein: The valve disc limiting block (106) has a chamfer on the left side, and the chamfer edge on the valve disc limiting block (106) has a rounded corner.

7. A drainage device with an integrated one-way valve according to claim 6, characterized in that: When the drain valve body (1) and the duckbill valve (2) are in the draining state, the spherical valve disc (105) is located inside the drain valve body (1) on the right side, and the outer circumferential surface of the spherical valve disc (105) is in close contact with the chamfered bevel on the valve disc limiting block (106), and the right end slit of the duckbill valve (2) is in the expanded state.

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