A leak-proof marine valve

Abstract

This utility model relates to a leak-proof marine valve, aiming to solve the technical problem that during long-term use, the exposed gasket is prone to aging, resulting in decreased sealing performance and leakage at the connection. The valve includes a valve body with a handwheel valve stem connected to the top center. Connecting pipes are fixed to both sides of the valve body. A mounting cover is fixed to the outer side of the connecting pipe, and a first flange is fixed to the outer side of the mounting cover. A pipe is connected to the outer side of the connecting pipe, and a second flange is fixed to the outer side of the pipe. A sealing mechanism is connected to the outer side of the connecting pipe, and an extension mechanism is connected to the outer side of the handwheel valve stem. This utility model provides double sealing, greatly improving sealing performance and preventing leakage. Furthermore, it avoids direct exposure of the sealing measures to the outside, preventing aging and further enhancing sealing performance and preventing leakage.

Description

Technical Field

[0001] This utility model relates to the field of valves, specifically a leak-proof marine valve. Background Technology

[0002] Marine valves are valves specifically designed and manufactured for the shipbuilding industry. They play a crucial role in a ship's piping systems, controlling the flow of fluids such as water, fuel, and air to ensure the normal operation and safety of the ship.

[0003] Patent application number 202323038037.7 discloses a leak-proof valve, including a lower valve shell and an upper valve shell. A mounting base is fixedly connected inside the lower valve shell, and a ball valve body is fixedly installed inside the mounting base. Connecting pipes are fixedly connected to both sides of the ball valve body. The upper valve shell is placed on top of the lower valve shell. Mounting blocks are fixedly connected to the four corners of the upper and lower valve shells. Threaded holes are opened on the top of each mounting block. This utility model adopts the above structure. The waterproof layer at the lower end of the inner side of the sealing platform has good waterproof and anti-permeability effects, which can effectively improve the waterproof effect of the sealing platform. The sealing rubber layer is located on top, which can achieve a complete sealing effect on the gaps.

[0004] However, in practical applications, traditional valves are usually connected to pipelines through flanges. When sealing, a gasket is installed between the two flanges. However, after long-term use, the gasket is exposed and is prone to aging, which reduces the sealing performance and causes leakage at the connection. For example, when workers install valves, they align the flanges of the pipe and the valve, install a gasket at the connection, and then connect the two flanges to install the valve. Since the gasket is directly exposed, it is easy for the gasket to age over time, affecting the sealing performance. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a leak-proof marine valve to solve the technical problem that the gasket is easily aged when exposed to the outside during long-term use, which leads to a decrease in sealing performance and leakage at the connection.

[0006] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a leak-proof marine valve is designed, including a valve body, a handwheel valve stem connected to the middle of the top of the valve body, connecting pipes fixed on both sides of the valve body, an installation cover fixed to the outer side of the connecting pipe, a first flange fixed to the outer side of the installation cover, a pipe connected to the outer side of the connecting pipe, a second flange fixed to the outer side of the pipe, a sealing mechanism connected to the outer side of the connecting pipe, and an extension mechanism connected to the outer side of the handwheel valve stem.

[0007] In this solution, the sealing mechanism is designed to prevent the sealing measures from being directly exposed to the outside, thus preventing aging, ensuring sealing performance, preventing leakage, and improving the sealing performance of the device. The extension mechanism is designed to increase the turning arm when the handwheel valve stem is rusted and difficult to turn, saving physical strength and facilitating turning.

[0008] Preferably, the sealing mechanism includes a sealing ring embedded in the outer side wall of the connecting pipe, an expansion rubber ring sleeved on the outer side wall of the pipe, a connecting groove opened on one side of the second flange, connecting blocks symmetrically connected inside the connecting groove, an internal threaded cylinder fixed on one side of the two connecting blocks, an external threaded cylinder screwed to the inner side wall of the internal threaded cylinder, and a limit rod symmetrically fixed on one side of the external threaded cylinder.

[0009] In practical applications, by fitting the pipe sleeve onto the outside of the connecting pipe, the pipe end fits against the inside of the mounting cover, and a sealing ring is used for initial sealing. Then, by rotating the internal threaded cylinder, the limiting rod and the second flange work together to move the external threaded cylinder, thereby squeezing the expansion rubber ring, causing it to expand and deform, and fit tightly against the pipe, achieving a double seal. This greatly improves the sealing performance, prevents leakage, and avoids direct exposure of the sealing measures to the outside, preventing aging and further improving the sealing performance and preventing leakage.

[0010] Preferably, the expansion rubber ring is located inside the mounting cover, and the inner diameter of the pipe is equal to the outer diameter of the connecting pipe.

[0011] In practical applications, the expansion rubber ring is fitted onto the outside of the pipe. During pipe installation, the pipe is fitted onto the outside of the connecting pipe, so that the expansion rubber ring is located inside the mounting cover, and the sealing ring fits against the inner wall of the pipe.

[0012] Preferably, the externally threaded cylinder slides on the outer wall of the pipe, and the inner wall of the externally threaded cylinder is in contact with the outer wall of the pipe.

[0013] In practical applications, the rotation of the internally threaded cylinder facilitates the movement of the externally threaded cylinder on the outside of the pipe.

[0014] Preferably, the limiting rod slides through one side of the second flange, and the limiting rod is slidably connected to the second flange.

[0015] In practical applications, the internal threaded cylinder is limited by the cooperation of the limit rod and the second flange, so that the internal threaded cylinder can only move in a straight line.

[0016] Preferably, the extension mechanism includes sleeves symmetrically fixed to the outer wall of the handwheel valve stem. A fixing hole is provided through the outer side of the sleeve. A sliding rod is symmetrically fixed between the two sides of the inner cavity of the sleeve. A movable plate slides on the outer side of the sliding rod. An extension rod is fixed to the middle of one side of the movable plate. A contraction cavity is provided on the outer side of the extension rod. A connecting spring is fixed to the bottom of the contraction cavity. A circular plate is fixed to the top of the connecting spring. A fixing rod is fixed to the middle of the top of the circular plate.

[0017] In practical applications, pressing the fixed rod causes the circular plate to move, which in turn compresses the connecting spring, causing the fixed rod to retract into the contraction cavity. This pulls the extension rod, causing it to move out of the sleeve, increasing its length and thus increasing the lever arm of rotation. This reduces the force required to rotate the handwheel valve stem, preventing inconvenience when the handwheel valve stem rusts and improving the practicality of the device.

[0018] Preferably, the circular plate slides inside the contraction cavity, and the outer wall of the circular plate is in contact with the inner wall of the contraction cavity.

[0019] In practical applications, pressing the fixed rod causes the circular plate to descend, allowing it to move stably inside the contraction chamber.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, through the setting of a sealing mechanism, involves fitting the pipe sleeve onto the outside of the connecting pipe, so that the end of the pipe fits against the inside of the mounting cover, and using a sealing ring for initial sealing. Then, by rotating the inner threaded cylinder, the cooperation of the limiting rod and the second flange causes the outer threaded cylinder to move as the inner threaded cylinder rotates, thereby squeezing the expansion rubber ring, causing the expansion rubber ring to expand and deform, and fit tightly against the pipe, thus achieving a double seal. This greatly improves the sealing performance, prevents leakage, and avoids the sealing measures being directly exposed to the outside, preventing aging and further improving the sealing performance and preventing leakage. 2. This utility model, through the setting of the extension mechanism, by pressing the fixed rod, causes the fixed rod to drive the circular plate to move, thereby squeezing the connecting spring, causing the fixed rod to retract into the shrinkage cavity, pulling the extension rod, thereby moving the extension rod out of the sleeve, increasing the length, thereby increasing the rotation lever arm, reducing the force required to rotate the handwheel valve rod, preventing inconvenience in rotation when the handwheel valve rod is rusted, and improving the practicality of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the sealing ring installation structure of this utility model.

[0023] Figure 3A structural schematic diagram of the connecting groove of this utility model is provided.

[0024] Figure 4 This is a schematic diagram of the extension mechanism of this utility model.

[0025] Figure 5 This is a schematic diagram of the connecting spring mounting structure of this utility model.

[0026] In the diagram: 1. Valve body; 2. Handwheel valve stem; 3. Connecting pipe; 4. Mounting cover; 401. First flange; 5. Pipeline; 501. Second flange; 6. Sealing mechanism; 601. Sealing ring; 602. Expansion rubber ring; 603. Connecting groove; 604. Connecting block; 605. Internal threaded cylinder; 606. External threaded cylinder; 607. Limiting rod; 7. Extension mechanism; 701. Sleeve; 702. Fixing hole; 703. Slide rod; 704. Moving plate; 705. Extension rod; 706. Contraction chamber; 707. Connecting spring; 708. Circular plate; 709. Fixing rod. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1: A leak-proof marine valve, see [link / reference] Figures 1 to 4 The device includes a valve body 1, a handwheel valve stem 2 connected to the top center of the valve body 1, connecting pipes 3 fixed to both sides of the valve body 1, a mounting cover 4 fixed to the outer side of the connecting pipe 3, a first flange 401 fixed to the outer side of the mounting cover 4, a pipe 5 connected to the outer side of the connecting pipe 3, a second flange 501 fixed to the outer side of the pipe 5, a sealing mechanism 6 connected to the outer side of the connecting pipe 3, and an extension mechanism 7 connected to the outer side of the handwheel valve stem 2. The sealing mechanism 6 prevents the sealing measures from being directly exposed, preventing aging, ensuring sealing performance, preventing leakage, and improving the sealing performance of the device. The extension mechanism 7 allows for increased rotational power arm when the handwheel valve stem 2 is rusted and difficult to rotate, saving physical effort and facilitating rotation.

[0028] For details, see Figure 2 and Figure 4The sealing mechanism 6 includes a sealing ring 601 embedded in the outer side wall of the connecting pipe 3, an expansion rubber ring 602 sleeved on the outer side wall of the pipe 5, a connecting groove 603 on one side of the second flange 501, connecting blocks 604 symmetrically connected inside the connecting groove 603, an internal threaded cylinder 605 fixed on one side of the two connecting blocks 604, an external threaded cylinder 606 screwed to the inner side wall of the internal threaded cylinder 605, and a limit rod 607 symmetrically fixed on one side of the external threaded cylinder 606; the expansion rubber ring 602 is located inside the mounting cover 4, the inner diameter of the pipe 5 is equal to the outer diameter of the connecting pipe 3; the external threaded cylinder 606 slides on the outer side wall of the pipe 5, and the inner side wall of the external threaded cylinder 606 is in contact with the outer side wall of the pipe 5; the limit rod 607 slides through one side of the second flange 501, and the limiting rod 607 is slidably connected to the second flange 501; by sleeved the pipe 5 on the outside of the connecting pipe 3, the end of the pipe 5 is fitted against the inside of the mounting cover 4, and a preliminary seal is achieved using the sealing ring 601. Then, the internal threaded cylinder 605 is rotated, and with the cooperation of the limiting rod 607 and the second flange 501, the internal threaded cylinder 605 rotates, driving the external threaded cylinder 606 to move, thereby squeezing the expansion rubber ring 602, causing the expansion rubber ring 602 to expand and deform, and tightly fit with the pipe 5, achieving a double seal, greatly improving the sealing performance, preventing leakage, and preventing the sealing measures from being directly exposed to the outside, preventing aging, further improving the sealing performance and preventing leakage.

[0029] It is worth noting that, see Figure 4 and Figure 5 The extension mechanism 7 includes a sleeve 701 symmetrically fixed to the outer wall of the handwheel valve stem 2. A fixing hole 702 is provided through the outer side of the sleeve 701. A slide rod 703 is symmetrically fixed between the two sides of the inner cavity of the sleeve 701. A moving plate 704 slides on the outer side of the slide rod 703. An extension rod 705 is fixed to the middle of one side of the moving plate 704. A contraction cavity 706 is provided on the outer side of the extension rod 705. A connecting spring 707 is fixed to the bottom of the contraction cavity 706. A circular plate 708 is fixed to the top of the connecting spring 707. A fixing device is fixed at the middle of the top of the circular plate 708. Rod 709; circular plate 708 slides inside the contraction cavity 706, and the outer wall of circular plate 708 is in contact with the inner wall of contraction cavity 706; by pressing the fixed rod 709, the fixed rod 709 drives the circular plate 708 to move, thereby squeezing the connecting spring 707, causing the fixed rod 709 to retract inside the contraction cavity 706, pulling the extension rod 705, thereby moving the extension rod 705 out of the sleeve 701, increasing the length, thereby increasing the rotation lever arm, reducing the force required to rotate the handwheel valve rod 2, preventing inconvenience in rotation when the handwheel valve rod 2 is rusted, and improving the practicality of the device.

[0030] In practical application, when installing the valve body 1, the pipe 5 is fitted onto the outside of the connecting pipe 3, and then the expansion rubber ring 602 is squeezed to make it contact and squeeze the pipe 5. The sealing ring 601 and the expansion rubber ring 602 provide a double seal to ensure the sealing performance and prevent the sealing measures from being exposed to the outside, thus preventing aging and leakage.

[0031] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. They can be fully implemented by those skilled in the art, so there is no need to elaborate. The content protected by this utility model does not involve the improvement of internal structure and method.

[0032] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A leak-proof marine valve, comprising a valve body (1), a handwheel valve stem (2) connected to the middle of the top of the valve body (1), connecting pipes (3) fixed to both sides of the valve body (1), a mounting cover (4) fixed to the outer side of the connecting pipe (3), a first flange (401) fixed to the outer side of the mounting cover (4), a pipe (5) connected to the outer side of the connecting pipe (3), and a second flange (501) fixed to the outer side of the pipe (5), characterized in that, A sealing mechanism (6) is connected to the outside of the connecting pipe (3); The sealing mechanism (6) includes a sealing ring (601) embedded in the outer side wall of the connecting pipe (3), an expansion rubber ring (602) sleeved on the outer side wall of the pipe (5), a connecting groove (603) is provided on one side of the second flange (501), connecting blocks (604) are symmetrically connected inside the connecting groove (603), an internal threaded cylinder (605) is fixed on one side of the two connecting blocks (604), an external threaded cylinder (606) is screwed to the inner side wall of the internal threaded cylinder (605), and a limit rod (607) is symmetrically fixed on one side of the external threaded cylinder (606). The outer wall of the handwheel valve stem (2) is connected to an extension mechanism (7); The extension mechanism (7) includes a sleeve (701) symmetrically fixed to the outer wall of the handwheel valve stem (2). A fixing hole (702) is provided through the outer side of the sleeve (701). A slide rod (703) is symmetrically fixed between the two sides of the inner cavity of the sleeve (701). A moving plate (704) slides on the outer side of the slide rod (703). An extension rod (705) is fixed in the middle of one side of the moving plate (704). A contraction cavity (706) is provided in the outer side of the extension rod (705). A connecting spring (707) is fixed at the bottom of the contraction cavity (706). A circular plate (708) is fixed at the top of the connecting spring (707). A fixing rod (709) is fixed in the middle of the top of the circular plate (708).

2. The leak-proof marine valve as described in claim 1, characterized in that, The expansion rubber ring (602) is located inside the mounting cover (4), and the inner diameter of the pipe (5) is equal to the outer diameter of the connecting pipe (3).

3. The leak-proof marine valve as described in claim 1, characterized in that, The external threaded cylinder (606) slides on the outer wall of the pipe (5), and the inner wall of the external threaded cylinder (606) is in contact with the outer wall of the pipe (5).

4. A leak-proof marine valve as described in claim 1, characterized in that, The limiting rod (607) slides through one side of the second flange (501), and the limiting rod (607) is slidably connected to the second flange (501).

5. A leak-proof marine valve as described in claim 1, characterized in that, The circular plate (708) slides inside the contraction cavity (706), and the outer wall of the circular plate (708) is in contact with the inner wall of the contraction cavity (706).

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