Wave-resistant valve

Abstract

The utility model relates to the technical field of valve sealing, and discloses a wave-resistant valve which comprises a valve body, and a channel suitable for liquid circulation is arranged in the valve body. The valve plate is arranged in the valve body in a hinged mode, and the valve plate is suitable for closing a passage from the liquid inlet to the liquid outlet section under the action of the gravity of the valve plate; the stop assembly comprises a valve rod and a stop piece, the valve rod is arranged in the valve body, an included angle is formed between the axial direction of the valve rod and the passage, the stop piece is arranged on the plate face, close to one side of the liquid outlet, of the valve plate, and the valve rod has the first state that the passage is closed after abutting against the stop piece; and the second state is far away from the retainer so as to release the pressing force of the retainer on the valve plate to open the passage. According to the wave-resistant valve, the valve plate closes a passage by means of the gravity of the valve plate, and the hidden danger that the valve cannot be closed due to failure of a spring is eliminated; the stop assembly is matched with the stop piece through the valve rod, a passage can be manually closed in the first state, emergency operation and maintenance are achieved, and reliable operation of the wave-resistant valve is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of valve sealing technology, specifically to an anti-wave valve. Background Technology

[0002] As a key component ensuring the safe operation of fluid systems, anti-surge valves play a vital role in shipbuilding and hydraulic engineering. In the marine field, anti-surge valves installed at the hull-side sewage discharge outlets utilize springs or pressure differentials to create a one-way check mechanism, automatically closing under the impact of wind and waves to effectively prevent seawater backflow and provide a protective barrier for the ship's structure and equipment. In hydraulic engineering scenarios, anti-surge valves not only block abnormal reverse flow of liquids within pipelines but also, through springs or swashplate structures, automatically close when the pipeline flow exceeds the design threshold, buffering liquid surges caused by floods or wave impacts. Anti-surge valves are widely used in water supply, fire protection, and industrial circulating water systems, stabilizing pressure, protecting pump and valve components, and extending the service life of pipelines.

[0003] Traditional anti-reverse valves typically employ a spring-loaded tongue disc structure. Under normal operating conditions, they are in the closed state. Flow in the forward direction pushes open the tongue disc, allowing the valve to open, while flow in the reverse direction cannot open it, thus achieving a check valve function. However, this design has certain limitations—the valve may fail to close properly if the spring fails, and the lack of a manual shut-off function makes maintenance and emergency operation inconvenient. Utility Model Content

[0004] In view of this, the present invention provides a wave-blocking valve to solve the problem that the wave-blocking valve cannot close after the internal spring fails in the prior art.

[0005] This utility model provides a wave-blocking valve, comprising:

[0006] The valve body has a passage suitable for the flow of liquid. One end of the passage has an inlet and the other end has an outlet, and the direction of liquid flow is horizontal.

[0007] A valve plate is hinged to the valve body and is adapted to close the passage from the inlet to the outlet under its own weight.

[0008] A stop assembly includes a valve stem and a stop member. The valve stem extends into the valve body and its axial direction is angled with the passage. The stop member is disposed on the valve plate near the outlet side. The valve stem is adapted to move along its axial direction under the action of a driving force. The valve stem has a first state of closing the passage after abutting against the stop member, and a second state of opening the passage by moving away from the stop member to release the clamping force of the stop member on the valve plate.

[0009] Optionally, the stop is an arc-shaped stop, with the center of the arc surface of the arc-shaped stop located near the liquid inlet side.

[0010] Optionally, the stop member is provided with an abutment portion, which is a groove abutment portion, and the end of the valve stem near the passage is provided with an outwardly convex abutment surface that cooperates with the groove abutment portion.

[0011] Optionally, the valve stem is axially perpendicular to the passage.

[0012] Optionally, the center of gravity of the valve plate is offset towards the liquid inlet side, so that the valve plate can self-close the passage when no external force is applied.

[0013] Optionally, the passage is provided with a clearance space suitable for the movement of the valve plate, the clearance space being adapted to move to a fully open state when the valve plate is pushed open by the forward flow of liquid.

[0014] Optionally, a drive unit is provided on the side of the valve stem away from the passage.

[0015] Optionally, the system also includes a cover plate closure, which has a through hole suitable for the valve stem to pass through. The cover plate closure is adapted to cover the valve body, and the connection position between the cover plate closure and the valve stem, and / or the connection position between the valve stem and the valve body, is provided with sealing material.

[0016] Optionally, it also includes a valve seat, which is disposed at the liquid inlet and cooperates with the valve plate to form a sealing structure.

[0017] Optionally, the valve body may also include a valve cover, which is detachably mounted on the valve body.

[0018] Beneficial effects

[0019] The anti-surge valve provided by this utility model includes a valve body with a passage suitable for liquid flow. One end of the passage has an inlet, and the other end has an outlet. A valve plate is hinged to the valve body and is adapted to close the passage from the inlet to the outlet under its own weight. A stop assembly includes a valve stem and a stop member. The valve stem is disposed in the valve body, and its axial direction is perpendicular to the passage. The stop member is disposed on the valve plate near the outlet. The valve stem is adapted to move along its axial direction under a driving force. The valve stem has a first state of closing the passage after contacting the stop member, and a second state of moving away from the stop member. The anti-surge valve provided by this utility model uses the valve plate to close the passage by its own weight, eliminating the hidden danger of the valve failing to close due to spring failure. The stop assembly, through the cooperation of the valve stem and the stop member, allows manual shut-off of the passage in the first state, enabling emergency operation and maintenance, and ensuring reliable operation of the anti-surge valve. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional schematic diagram of a wave-blocking valve according to an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of the anti-surge valve in the first state according to an embodiment of the present utility model;

[0023] Figure 3 This is a cross-sectional schematic diagram of the anti-surge valve in the second state according to an embodiment of the present utility model;

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Valve body; 11. Liquid inlet; 12. Liquid outlet;

[0026] 2. Valve plate; 3. Valve stem; 31. Drive unit; 4. Stop; 41. Abutment part; 5. Cover plate closure; 6. Sealing material; 7. Valve seat; 8. Valve cover. Detailed Implementation

[0027] 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 embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] The following is combined with Figures 1 to 3 The following describes embodiments of the present invention.

[0029] According to an embodiment of the present invention, a wave-blocking valve is provided, comprising:

[0030] Valve body 1, the valve body 1 is provided with a passage suitable for the flow of liquid, one end of the passage is provided with a liquid inlet 11 and the other end is provided with a liquid outlet 12, and the liquid flow direction is horizontal.

[0031] Valve plate 2 is hinged inside valve body 1, and valve plate 2 is adapted to close the passage from inlet 11 to outlet 12 under its own weight.

[0032] The stop assembly includes a valve stem 3 and a stop 4. The valve stem 3 extends into the valve body 1, and the axial direction of the valve stem 3 is set at an angle to the passage. The stop 4 is disposed on the plate surface of the valve plate 2 near the outlet 12. The valve stem 3 is adapted to move along its axial direction under the action of driving force. The valve stem 3 has a first state of closing the passage after abutting against the stop 4, and a second state of opening the passage by moving away from the stop 4 to release the pressing force of the stop 4 on the valve plate 2.

[0033] As is easily understood, valve body 1 is integrally cast. Integral casting enhances the overall structural strength and sealing performance of the anti-surge valve. The integral casting process avoids the seam problems caused by splicing multiple parts, eliminates potential leakage risks, and ensures that valve body 1 maintains good sealing performance under complex operating conditions such as high pressure and high flow rate.

[0034] It should be noted that the valve plate 2 is rotatably mounted inside the valve body 1 via a hinge shaft, providing a stable and flexible rotation fulcrum for the valve plate 2. The hinge shaft structure facilitates disassembly and maintenance. When wear, jamming, or other problems occur in the valve plate 2 or the hinged part, the hinge shaft and related components can be quickly inspected and replaced, ensuring the long-term stable operation of the anti-surge valve and improving its overall performance and reliability.

[0035] It should be noted that in the first state, the valve stem 3 moves axially under the driving force and abuts against the stop 4 on the valve plate 2, blocking the passage of the valve body 1 and realizing the manual shut-off function. In this state, even in the event of an emergency, the passage can be closed in time through manual intervention, facilitating emergency operation and equipment maintenance, and solving the problem of the lack of manual control in traditional anti-surge valves. In the second state, the valve stem 3 moves away from the stop 4 and no longer restricts the valve plate 2, allowing the valve plate 2 to move flexibly under its own weight and fluid force. At this time, the anti-surge valve returns to its normal working mode, allowing the forward fluid to push open the valve plate 2 to make the passage unobstructed, while the reverse fluid cannot pass through, realizing the check function and ensuring the stable operation of the pipeline system. Here, the forward fluid refers to the fluid flowing from the inlet 11 to the outlet 12, and the reverse fluid refers to the fluid flowing from the outlet 12 to the inlet 11. The angle between the axial direction of the valve stem 3 and the passage can be any value from 0 to 180 degrees, excluding the end value. In this embodiment, the angle is preferably 90 degrees, that is, the axial direction of the valve stem 3 is perpendicular to the passage, which facilitates the application of force and also makes it easier to process. The fluid can be water or other flowing media.

[0036] The anti-surge valve provided in this embodiment uses the valve plate 2 to close the passage by its own weight, eliminating the hidden danger of the valve failing to close due to spring failure; the stop assembly cooperates with the stop part 4 through the valve stem 3, and can manually close the passage in the first state to realize emergency operation and maintenance, and ensure the reliable operation of the anti-surge valve.

[0037] Furthermore, the axial direction of the valve stem 3 is set perpendicular to the passage.

[0038] Furthermore, the stop 4 is an arc-shaped stop, with the center of the arc surface of the arc-shaped stop located near the liquid inlet 11.

[0039] It is easy to understand that when the valve stem 3 moves to the first state and abuts against the stop 4, a tighter sealing structure can be formed. The arc-shaped structure also helps to disperse the pressure applied by the valve stem 3, avoid local stress concentration, and extend the service life of the stop assembly.

[0040] In an optional embodiment, the arc-shaped stop can be replaced with a wedge-shaped stop 4 with a ramp, and the passage can be closed by the cooperation of the ramp with the valve stem 3; alternatively, a stop 4 made of elastic material can be used, which can also achieve the purpose of blocking the passage by utilizing its elastic deformation capability to make close contact with the valve stem 3.

[0041] Furthermore, the stop 4 is provided with an abutment part 41, which is a groove abutment part, and the end of the valve stem 3 near the passage is provided with an outwardly convex abutment surface that cooperates with the groove abutment part.

[0042] It is easy to understand that the interlocking of the concave and convex structures improves the stability and sealing performance of the stop assembly when closing the passage. Under pressure, the convex abutment surface can be tightly embedded in the groove, forming a mechanical interlock, effectively preventing relative sliding between the valve stem 3 and the stop 4, enhancing the reliability of the anti-surge valve when manually shutting off, and reducing leakage problems caused by poor sealing.

[0043] Specifically, a groove can be machined into the stop part 4. The depth and width of the groove are designed according to the end dimensions of the valve stem 3 to ensure a good fit between the two. For example, CNC lathe milling can be used to ensure that the inner wall of the groove is smooth and flat, reducing frictional resistance. Alternatively, the groove abutment part can be integrally formed by casting. The groove shape can be reserved in the mold design stage, so that the stop part 4 can directly form the required structure during the casting process, reducing subsequent processing steps.

[0044] Specifically, the end of the valve stem 3 can be machined into a spherical structure using a forging process, with the outer surface of the spherical structure forming a convex arc-shaped contact surface. When the spherical structure mates with the groove of the stop 4, it can achieve a fit at multiple angles. Even if there is a slight angular deviation in the valve stem 3 during movement, it can still effectively contact and complete the seal. At the same time, the spherical contact surface has a uniform stress distribution when under force, reducing local wear, extending the service life of the valve stem 3, and ensuring the long-term stable operation of the manual shut-off function of the anti-surge valve.

[0045] Furthermore, the stop 4 and the abutment part 41 are integrally cast.

[0046] It is easy to understand that the stop part 4 and the abutment part 41 are integrally cast, which avoids the problem of tolerance accumulation caused by assembly after separate machining, and ensures the accuracy and integrity of the connection between the two. Through the one-time molding process, the material is evenly distributed, reducing gaps and weak points caused by assembly, effectively improving the overall strength and reliability of the stop part 4; at the same time, it simplifies the production process, reduces processing costs, shortens the manufacturing cycle, and eliminates concerns about loosening or falling off of the connection part during use.

[0047] Furthermore, the center of gravity of the valve plate 2 is offset towards the liquid inlet 11 to achieve self-closing of the passage when no external force is applied.

[0048] In a straightforward manner, by positioning the valve plate 2 with its center of gravity offset towards the inlet 11, it can automatically close the passage without the need for easily damaged components such as springs, relying solely on its own weight. This eliminates the risk of the valve failing to close due to spring failure, thus improving the reliability and stability of the anti-surge valve. When the water pump stops or the water flow ceases, the valve plate 2 can reliably close the passage, effectively preventing backflow of the medium and ensuring the safe operation of the pipeline system.

[0049] Specifically, the center of gravity position can be adjusted by changing the shape and structure of the valve plate 2. For example, the valve plate 2 can be designed as a wedge-shaped structure with a thicker side on the inlet 11 and a thinner side on the outlet 12, using the difference in thickness to shift the center of gravity; alternatively, a counterweight can be added to the side of the inlet 11 of the valve plate 2. The counterweight can be made of a metal material with a high density and can be connected to the valve plate 2 by welding or bolting.

[0050] Furthermore, the passage is provided with a clearance space suitable for the movement of the valve plate 2, the clearance space being suitable for moving to the fully open state when the valve plate 2 is pushed open by the forward flow of liquid.

[0051] It is easy to understand that providing a clearance space within the passage to facilitate the movement of the valve plate 2 provides sufficient range of motion for the valve plate 2 to open to the fully open state when the liquid flows in the forward direction, ensuring that the valve plate 2 moves into position without obstruction, effectively reducing the resistance when the fluid passes through, and improving the efficiency of medium flow. Specifically, the clearance space is formed on the side of the valve body 1 near the outlet 12 and is located on the rotation path of the valve plate 2, for example, on the inner wall of the valve body 1.

[0052] Furthermore, a drive unit 31 is provided on the side of the valve stem 3 away from the passage.

[0053] It is easy to understand that a drive unit 31 is provided on the side of the valve stem 3 away from the passage, providing an operating interface for the movement of the valve stem 3. The operator can easily apply force through the drive unit 31 to control the valve stem 3 to switch between the first and second states, realizing the manual closing and opening of the passage, thus improving the convenience of emergency operation and maintenance of the anti-surge valve.

[0054] Specifically, in this embodiment, the drive unit 31 is a handwheel. Rotating the handwheel drives the valve stem 3 to move axially, thereby switching between the first and second states. Furthermore, a scale marking can be provided on the handwheel to facilitate the operator's visual judgment of the valve stem 3's position. In an optional embodiment, an electric drive unit 31 can be used, connected to a transmission mechanism via a motor, to achieve remote control or automated operation; alternatively, a hydraulic drive unit 31 can be provided, utilizing the pressure of the hydraulic system to push the valve stem 3, suitable for situations requiring greater driving force.

[0055] Furthermore, it also includes a cover plate closure 5, which has a through hole suitable for the valve stem 3 to pass through. The cover plate closure 5 is suitable for covering the valve body 1, and the connection position between the cover plate closure 5 and the valve stem 3, and / or the connection position between the valve stem 3 and the valve body 1 is provided with sealing material 6.

[0056] It is easy to understand that a cover plate connector is provided with a through hole for the valve stem 3 to pass through, and a sealing material 6 is provided at the connection between the cover plate connector and the valve stem 3, and between the valve stem 3 and the valve body 1. On the one hand, the valve stem 3 can be effectively fixed to ensure its stability during axial movement and avoid the stopping effect being affected by shaking. On the other hand, the application of the sealing material 6 can prevent liquid from leaking from the connection gap, ensuring the sealing performance of the anti-surge valve, maintaining the integrity of the system even under high pressure conditions, while reducing the entry of external impurities into the valve body 1, reducing the risk of component wear, and extending the service life of the anti-surge valve.

[0057] Specifically, in this embodiment, the sealing material 6 is flexible graphite. Flexible graphite has good flexibility and self-lubricating properties, which can tightly fit the gap between the cover plate connector, the valve stem 3 and the valve body 1. During the frequent movement of the valve stem 3, it can effectively reduce friction loss and ensure the long-term stability of the sealing structure.

[0058] Furthermore, it also includes a valve seat 7, which is located at the liquid inlet 11 and cooperates with the valve plate 2 to form a sealing structure.

[0059] As is easily understood, the valve seat 7 provides a contact surface for the valve plate 2. When the valve plate 2 closes the passage by its own weight or external force, the two closely cooperate to effectively block the flow of the medium, prevent liquid leakage, and ensure the reliability of the check function. At the same time, the valve seat 7 can distribute the pressure on the valve plate 2, avoid the valve plate 2 from directly contacting the valve body 1 and causing wear, extend the service life of the valve plate 2, and improve the safety and stability of the pipeline system operation.

[0060] Furthermore, it also includes a valve cover 8, which is detachably mounted on the valve body 1.

[0061] It is easy to understand that the valve cover 8, which can be detachably installed on the valve body 1, facilitates the maintenance and repair of the anti-surge valve. When it is necessary to check the operation of internal components such as the valve plate 2 and the stop assembly, or to replace worn parts, the valve cover 8 can be easily removed to quickly open the internal space of the valve body 1, making it convenient for operators to conduct visual inspection and maintenance operations.

[0062] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A wave-damping valve, characterized in that, include: The valve body (1) has a passage suitable for the flow of liquid. One end of the passage is provided with an inlet (11) and the other end is provided with an outlet (12). The direction of liquid flow is horizontal. Valve plate (2), which is hinged in the valve body (1) and is adapted to close the passage from the inlet (11) to the outlet (12) under its own weight; The stop assembly includes a valve stem (3) and a stop member (4). The valve stem (3) extends into the valve body (1) and the axial direction of the valve stem (3) is set at an angle to the passage. The stop member (4) is disposed on the plate surface of the valve plate (2) near the liquid outlet (12). The valve stem (3) is adapted to move along its axial direction under the action of a driving force. The valve stem (3) has a first state of closing the passage after abutting against the stop member (4) and a second state of opening the passage by moving away from the stop member (4) to release the pressing force of the stop member (4) on the valve plate (2).

2. The anti-surge valve according to claim 1, characterized in that, The stop (4) is an arc-shaped stop, and the center of the arc surface of the arc-shaped stop is located near the liquid inlet (11).

3. The anti-surge valve according to claim 2, characterized in that, The stop (4) is provided with an abutment part (41), which is a groove abutment part. The valve stem (3) has an outwardly convex abutment surface that cooperates with the groove abutment part at the end near the passage.

4. The anti-surge valve according to claim 3, characterized in that, The valve stem (3) is axially perpendicular to the passage.

5. The anti-surge valve according to any one of claims 1-4, characterized in that, The center of gravity of the valve plate (2) is offset towards the liquid inlet (11) so that the valve plate (2) can self-close the passage when no external force is applied.

6. The anti-surge valve according to claim 5, characterized in that, The passage is provided with a clearance space suitable for the movement of the valve plate (2), which is suitable for the valve plate (2) to be moved to the fully open state when the liquid flows in the forward direction and the valve plate (2) is pushed open.

7. The anti-surge valve according to any one of claims 1-4, characterized in that, The valve stem (3) is provided with a drive unit (31) on the side away from the passage.

8. The anti-surge valve according to any one of claims 1-4, characterized in that, It also includes a cover plate closure (5), which has a through hole suitable for the valve stem (3) to pass through. The cover plate closure (5) is suitable for covering the valve body (1), and the connection position between the cover plate closure (5) and the valve stem (3), and / or the connection position between the valve stem (3) and the valve body (1) is provided with sealing material (6).

9. The anti-surge valve according to any one of claims 1-4, characterized in that, It also includes a valve seat (7), which is disposed at the liquid inlet (11) and cooperates with the valve plate (2) to form a sealing structure.

10. The anti-surge valve according to any one of claims 1-4, characterized in that, It also includes a valve cover (8), which is detachably mounted on the valve body (1).

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