A marine valve casting with high sealing performance

Abstract

The utility model discloses a kind of high sealing performance marine valve castings, it is related to marine valve castings technical field, including junction and sealing reinforcing mechanism, the junction one side is fixedly connected with sealing reinforcing mechanism, and sealing reinforcing mechanism includes fixed ring fixedly connected in the junction one side position, the inside of fixed ring is equipped with stepped seal groove, and the inside of stepped seal groove inserts rubber seal ring, the one side of rubber seal ring is provided with compression ring, stepped seal groove is three-stage ladder shape, rubber seal ring is inserted in stepped seal groove, and closely adheres with groove wall.This high sealing performance marine valve castings, compared with the existing ordinary marine valve castings, three stepped seal mechanism forms three sealed barriers, greatly improves sealing performance, effectively prevents medium leakage, ensures that ship system is safely and stably operated, and effectively resists marine environment erosion, maintains valve performance and appearance, reduces equipment replacement frequency.

Description

Technical Field

[0001] This utility model relates to the field of marine valve casting technology, specifically a marine valve casting with high sealing performance. Background Technology

[0002] Marine valve castings are key components used in ship piping systems to control the on / off state and flow regulation of fluids (such as water, steam, fuel oil, lubricating oil, etc.). They are typically made from metal materials such as cast iron, cast steel, and stainless steel through casting processes. The production of these castings requires multiple processes, including mold design, molding, melting, pouring, and cleaning. They are widely used in ship propulsion systems, deck machinery, and cabin water supply and drainage. However, existing marine valve castings have certain defects.

[0003] A valve casting, as described in application number CN202122978927.0, includes: a valve body with a through-flow channel formed within it; a through-hole in the middle of the valve body, penetrating the flow channel; the through-hole being vertically oriented with its inner diameter gradually increasing from its lower end to its upper end; and an isolation sleeve detachably housed within the through-hole, its outer wall fitting against the inner wall of the through-hole. The isolation sleeve has an upper open end and a lower closed end. A blind hole is formed on the inner side of the lower closed end, located at the axis of the isolation sleeve. Multiple limiting holes are formed on the inner wall of the blind hole, in which a ball is rotatably housed. The side of the ball extends into the blind hole. First through holes aligned with the flow channel are respectively formed on opposite sides of the middle portion of the isolation sleeve. This invention solves the problem that existing valve castings are unsuitable for normally closed valves. However, under the influence of factors such as vibration and water pressure changes during ship navigation, the valve castings are prone to sealing failure, resulting in media leakage, affecting the normal operation of the ship's system. Furthermore, when subjected to harsh working conditions such as high pressure and strong corrosion, they are prone to deformation and cracking, reducing the service life of the valves and even causing safety accidents.

[0004] Therefore, in view of this, we studied and improved the existing structure to propose a high-sealing marine valve casting. Utility Model Content

[0005] The purpose of this utility model is to provide a high-sealing marine valve casting to solve the problems mentioned in the background art, such as the easy failure of sealing under the influence of factors such as vibration and water pressure changes during ship navigation, which leads to media leakage, affects the normal operation of ship systems, and is prone to deformation and cracking under harsh working conditions such as high pressure and strong corrosion, which reduces the service life of valves and may even cause safety accidents.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-sealing marine valve casting, including a connection and a sealing reinforcement mechanism. The sealing reinforcement mechanism is fixedly connected to one side of the connection, and the sealing reinforcement mechanism includes a fixing ring fixedly connected to one side of the connection. The fixing ring has a stepped sealing groove inside, and a rubber sealing ring is embedded inside the stepped sealing groove. A pressure ring is provided on one side of the rubber sealing ring.

[0007] Preferably, the inner surface of the connection is provided with a positioning hole, and a fastening bolt is connected through the positioning hole.

[0008] Preferably, a washer is provided on one side of the fastening bolt, and a channel is fixedly connected on one side of the connection.

[0009] Preferably, a main body is fixedly connected to one side of the channel, and a protective mechanism is fixedly connected to the outer surface of the main body.

[0010] Preferably, the protective mechanism includes a zinc base layer fixedly connected to the outer surface of the main body, and an epoxy intermediate layer is fixedly connected to the outer surface of the zinc base layer, and a fluorocarbon surface layer is fixedly connected to the outer surface of the epoxy intermediate layer.

[0011] Preferably, a bracket is fixedly connected to the outer surface of the main body, and a handwheel is provided on the top of the bracket.

[0012] Preferably, the inner surface of the connection is coated with an anti-corrosion coating, and a honeycomb-shaped buffer cavity is fixedly connected inside the main body. A buffer partition is fixedly connected inside the honeycomb-shaped buffer cavity, and an elastic buffer column is provided on one side of the buffer partition.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of a sealing reinforcement mechanism, when the valve casting is connected to other components by fastening bolts, the pressure ring is subjected to progressively increasing pressure by the fastening bolts, causing it to undergo differentiated elastic deformation within the stepped groove. The first layer of sealing barrier preferentially contacts the medium and absorbs the initial pressure; the second layer further fills the minute gaps; the third layer is completely compacted under high pressure to form a tight seal. Facing the high-pressure environment of the deep sea, the multi-stage sealing design distributes the pressure, avoiding leakage of single-stage seals due to excessive load, effectively preventing leakage of media such as fuel oil and seawater, ensuring the stable operation of key pipelines such as the ship's power system and cabin drainage system, and avoiding equipment failure, pollution risks, and navigation safety hazards caused by leakage.

[0015] 2. Through the setting of the protective mechanism, the zinc base layer is preferentially corroded using the sacrificial anode principle, thereby protecting the valve body substrate; the epoxy intermediate layer fills the tiny pores of the bottom layer, improving the overall density of the coating; the fluorocarbon top layer has excellent weather resistance, corrosion resistance and antifouling properties. The three coatings work together to greatly improve the corrosion resistance of the valve body and extend the service life of the valve in the marine environment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the sealing reinforcement mechanism 2 of this utility model;

[0018] Figure 3 This is a schematic diagram of the structural protection mechanism 8 of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the main body 7 of this utility model.

[0020] In the diagram: 1. Connection; 2. Sealing reinforcement mechanism; 201. Fixing ring; 202. Stepped sealing groove; 203. Rubber sealing ring; 204. Pressure ring; 3. Positioning hole; 4. Fastening bolt; 5. Gasket; 6. Channel; 7. Main body; 8. Protective mechanism; 801. Zinc base layer; 802. Epoxy intermediate layer; 803. Fluorocarbon surface layer; 9. Bracket; 10. Handwheel; 11. Anti-corrosion coating; 12. Honeycomb buffer cavity; 13. Buffer partition; 14. Elastic buffer column. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-2As shown, a high-sealing marine valve casting includes a connection 1 and a sealing reinforcement mechanism 2. The sealing reinforcement mechanism 2 is fixedly connected to one side of the connection 1, and the sealing reinforcement mechanism 2 includes a fixing ring 201 fixedly connected to one side of the connection 1. The fixing ring 201 has a stepped sealing groove 202 inside, and a rubber sealing ring 203 is embedded inside the stepped sealing groove 202. A pressure ring 204 is provided on one side of the rubber sealing ring 203. The stepped sealing groove 202 is three-step in shape. The rubber sealing ring 203 is embedded in the stepped sealing groove 202 and fits tightly with the groove wall. When the valve casting is connected to other components, the rubber sealing ring 203 undergoes elastic deformation in the stepped sealing groove 202 under the action of the pressure ring 204 and the fastening bolt 4, forming three sealing barriers.

[0023] like Figure 1 As shown, a positioning hole 3 is provided on the inner surface of the connection 1, and a fastening bolt 4 is connected through the positioning hole 3. A washer 5 is provided on one side of the fastening bolt 4, and a channel 6 is fixedly connected to one side of the connection 1. The positioning hole 3 and the fastening bolt 4 are precisely matched. During installation, other components are placed in the corresponding positions with the valve casting. The fastening bolt 4 is inserted into the positioning hole 3 after passing through the other components in sequence. A stable mechanical connection is formed by tightening the fastening bolt 4. The anti-corrosion coating 11 on the inner wall of the channel 6 is made of nano-level anti-corrosion material. After curing, it forms a dense non-porous film, which isolates corrosive media from contacting the inner wall of the channel 6 and provides long-term protection for the inner wall of the channel 6.

[0024] Furthermore, a main body 7 is fixedly connected to one side of the channel 6, and a protective mechanism 8 is fixedly connected to the outer surface of the main body 7. The protective mechanism 8 includes a zinc base layer 801 fixedly connected to the outer surface of the main body 7, an epoxy intermediate layer 802 fixedly connected to the outer surface of the zinc base layer 801, and a fluorocarbon top layer 803 fixedly connected to the outer surface of the epoxy intermediate layer 802. The zinc base layer 801 is directly coated on the surface of the main body 7 and all valve castings through a thermal spraying process as a base layer for corrosion protection. The epoxy intermediate layer 802 is coated on top of the zinc base layer 801 to enhance the adhesion and corrosion resistance of the coating. The fluorocarbon top layer 803 is coated on the outermost layer to form a protective barrier.

[0025] Furthermore, a bracket 9 is fixedly connected to the outer surface of the main body 7, and a handwheel 10 is provided on the top of the bracket 9. An anti-corrosion coating 11 is applied to the inner surface of the connection 1, and a honeycomb-shaped buffer cavity 12 is fixedly connected inside the main body 7. A buffer partition 13 is fixedly connected inside the honeycomb-shaped buffer cavity 12, and an elastic buffer column 14 is provided on one side of the buffer partition 13. The honeycomb-shaped buffer cavities 12 are distributed between the outer and inner walls of the main body 7, arranged in a regular honeycomb pattern. The elastic buffer columns 14 are installed vertically, and the buffer partition 13 divides the honeycomb-shaped buffer cavity 12 into multiple independent units, avoiding concentrated impact force. When the marine valve casting is impacted, the entire main body 7 is subjected to uniform force. This improves the impact resistance of the casting and effectively reduces cracks caused by impact.

[0026] Working principle: When using this high-sealing marine valve casting, the rubber sealing ring 203 of the sealing reinforcement mechanism 2 is first embedded into the stepped sealing groove 202 opened in the inner wall of the fixing ring 201. The positioning hole 3 and the fastening bolt 4 cooperate to achieve component connection. With the gasket 5 tightened, the pressure ring 204 is fixed by the fastening bolt 4 and squeezes the rubber sealing ring 203 to fill the gap of the stepped sealing groove 202, so that the valve and the connecting component form a rigid connection at the connection point 1, ensuring the structural stability of the valve and the connecting component and preventing fluid leakage. Then, when the valve is opened or closed, the handwheel 10 drives the internal valve stem to rotate, controlling the opening and closing of the channel 6. The anti-corrosion coating 11 on the inner wall of the channel 6 continues to play a protective role. The protective mechanism 8, composed of zinc base layer 801, epoxy intermediate layer 802, and fluorocarbon surface layer 803, effectively protects the main body 7. Finally, the honeycomb buffer cavity 12, buffer partition 13, and elastic buffer column 14 constitute a buffer and shock absorption system to reduce the impact damage to the main body 7 and extend the service life of the valve. This is the working principle of this high-sealing marine valve casting.

Claims

1. A high-sealing marine valve casting, comprising a connection (1) and a sealing reinforcement mechanism (2), characterized in that, A sealing reinforcement mechanism (2) is fixedly connected to one side of the connection (1), and the sealing reinforcement mechanism (2) includes a fixing ring (201) fixedly connected to one side of the connection (1). A stepped sealing groove (202) is provided inside the fixing ring (201), and a rubber sealing ring (203) is embedded inside the stepped sealing groove (202). A pressure ring (204) is provided on one side of the rubber sealing ring (203). A gasket (5) is provided on one side of the fastening bolt (4), and a channel (6) is fixedly connected to one side of the connection (1). A main body (7) is fixedly connected to one side of the channel (6), and a protective mechanism (8) is fixedly connected to the outer surface of the main body (7). The protective mechanism (8) includes a zinc base layer (801) fixedly connected to the outer surface of the main body (7), and an epoxy intermediate layer (802) is fixedly connected to the outer surface of the zinc base layer (801). A fluorocarbon surface layer (803) is fixedly connected to the outer surface of the epoxy intermediate layer (802).

2. The high-sealing marine valve casting according to claim 1, characterized in that, The inner surface of the connection (1) is provided with a positioning hole (3), and a fastening bolt (4) is connected through the positioning hole (3).

3. A high-sealing marine valve casting according to claim 1, characterized in that, The outer surface of the main body (7) is fixedly connected to a bracket (9), and a handwheel (10) is provided on the top of the bracket (9).

4. A high-sealing marine valve casting according to claim 1, characterized in that, The inner surface of the connection (1) is coated with an anti-corrosion coating (11), and a honeycomb buffer cavity (12) is fixedly connected inside the main body (7). A buffer partition (13) is fixedly connected inside the honeycomb buffer cavity (12), and an elastic buffer column (14) is provided on one side of the buffer partition (13).

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