A new type of fully-sealed disc valve

Abstract

The utility model discloses a novel full -sealing disc valve, including cylindrical valve body, the outer surface of cylindrical valve body is equipped with a set of flange interface subassembly, the outer surface of cylindrical valve body is equipped with quick detachable valve cover subassembly, the outer surface of cylindrical valve body is equipped with valve rod subassembly. The device passes through two -stage sealing disc plate subassembly design, effectively solved the leakage problem of traditional single -stage sealing under high pressure difference or two -way flow working condition, through the outside metal seal ring provides rigid seal guarantee, the inside lip -shaped sealing ring then realizes secondary sealing through elastic deformation, and this combined type sealing structure makes the valve still can keep excellent sealing performance when pressure fluctuation, especially suitable for petroleum, chemical industry and so on harsh working condition, and the cooperation of floating valve seat and disc spring group realizes the automatic compensation function of sealing surface, when the sealing surface produces abrasion due to long -term use, and spring group can continuously provide appropriate sealing specific pressure, ensure that the sealing effect is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of fluid control equipment technology, and in particular to a novel fully sealed disc valve. Background Technology

[0002] Fully sealed butterfly valves are widely used in various industrial fields, especially in applications requiring precise flow control and media isolation. Due to their compact structure, flexible operation, and good sealing performance, fully sealed butterfly valves are widely used in industries such as petroleum, chemical, metallurgy, and power.

[0003] Currently, traditional fully sealed butterfly valves mostly use a single-stage sealing structure in actual use, which is prone to leakage under high pressure differential or bidirectional flow conditions. At the same time, the fixed valve seat cannot dynamically compensate for wear, and the sealing specific pressure is difficult to automatically adjust when the pressure fluctuates, which can easily affect the performance of the equipment. To address these issues, we propose a new type of fully sealed butterfly valve. Utility Model Content

[0004] The purpose of this invention is to provide a novel fully sealed disc valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel fully sealed disc valve includes a cylindrical valve body, a set of flange interface assemblies on the outer surface of the cylindrical valve body, a quick-release valve cover assembly on the outer surface of the cylindrical valve body, a valve stem assembly on the outer surface of the cylindrical valve body, a double-stage sealing disc assembly inside the cylindrical valve body, and an installation groove inside the cylindrical valve body.

[0007] In a further embodiment, each of the flange interface assemblies includes a flange, the outer surface of each flange is fixedly connected to the outer surface of the cylindrical valve body, each flange has a set of mounting holes on its outer surface, and a sealing block is fixedly connected to the outer surface of each flange.

[0008] In a further embodiment, the quick-release valve cover assembly includes a mounting block, the outer surface of which is fixedly connected to the outer surface of the cylindrical valve body, a permanent magnet is fixedly embedded on the outer surface of the mounting block, a sealing gasket is provided on the outer surface of the mounting block, a valve cover body is provided on the side of the sealing gasket away from the mounting block, and a set of mounting bolts is provided on the outer surface of the valve cover body.

[0009] In a further embodiment, the valve stem assembly includes a valve stem body, an external handle is fixedly connected to the outer surface of the valve stem body, and an anti-slip sleeve is fixedly connected to the outer surface of the external handle.

[0010] In a further embodiment, an outer metal sealing ring is snapped onto the outer surface of the dual-stage sealing disc assembly, an inner lip-shaped sealing ring is fixedly embedded on the outer surface of the dual-stage sealing disc assembly, and a mating block is provided on the outer surface of the dual-stage sealing disc assembly, the outer surface of the mating block being snapped onto the outer surface of the valve stem body.

[0011] In a further embodiment, a floating valve seat is snapped into the interior of the mounting groove, a disc spring assembly is fixedly connected to the outer surface of the floating valve seat, an annular cavity is provided on the outer surface of the floating valve seat, the outer surface of the disc spring assembly is tightly fitted with the interior of the annular cavity, and an inclined plate is provided on the outer surface of the floating valve seat.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device effectively solves the leakage problem of traditional single-stage seals under high pressure differential or bidirectional flow conditions through a dual-stage sealing disc assembly design. The outer metal sealing ring provides rigid sealing, while the inner lip sealing ring achieves secondary sealing through elastic deformation. This combined sealing structure allows the valve to maintain excellent sealing performance even under pressure fluctuations, making it particularly suitable for harsh conditions such as those in the petroleum and chemical industries. Simultaneously, the synergistic effect of the floating valve seat and disc spring assembly achieves automatic compensation of the sealing surface. When the sealing surface wears due to long-term use, the spring assembly continuously provides appropriate sealing pressure, ensuring that the sealing effect is not affected. This design significantly extends the valve's service life and reduces maintenance frequency. Furthermore, the quick-release valve cover assembly uses permanent magnet adsorption combined with mounting bolts for fixation, reducing maintenance time by more than 60% compared to traditional bolt connections. The optimized design of the sealing gasket avoids the risk of damage during disassembly, making daily maintenance more convenient and efficient. Attached Figure Description

[0014] Figure 1 This is a frontal three-dimensional structural diagram of a novel fully sealed disc valve.

[0015] Figure 2 This is a side view of the three-dimensional structure of a novel fully sealed disc valve.

[0016] Figure 3 This is a top-section three-dimensional structural diagram of a novel fully sealed disc valve.

[0017] Figure 4 For the new type of fully sealed disc valve Figure 3 A magnified structural diagram of part A in the middle.

[0018] In the diagram: 1. Cylindrical valve body; 2. Flange interface assembly; 201. Flange; 202. Mounting hole; 203. Sealing block; 3. Quick-release valve cover assembly; 301. Mounting bolt; 302. Mounting block; 303. Sealing gasket; 304. Valve cover body; 4. Valve stem assembly; 401. External handle; 402. Valve stem body; 5. Double-stage sealing disc assembly; 501. Connecting block; 502. Inner lip seal ring; 503. Outer metal sealing ring; 6. Mounting groove; 601. Annular cavity; 602. Floating valve seat; 603. Disc spring assembly; 604. Inclined plate. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[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] Please see Figure 1-4In this utility model, a novel fully sealed disc valve includes a cylindrical valve body 1. A set of flange interface assemblies 2 are provided on the outer surface of the cylindrical valve body 1. Each flange interface assembly 2 includes a flange 201, and the outer surface of each flange 201 is fixedly connected to the outer surface of the cylindrical valve body 1. Each flange 201 has a set of mounting holes 202 on its outer surface, and a sealing block 203 is fixedly connected to the outer surface of each flange 201. The cylindrical valve body 1 adopts a cylindrical design, resulting in a compact structure and low fluid resistance. The flange interface assembly 2 includes a flange 201, mounting holes 202, and sealing blocks 203. The flange 201 is welded and fixed to the cylindrical valve body 1. The mounting holes 202 are evenly distributed. The cylindrical structure optimizes fluid dynamics performance and reduces pressure loss. The standardized flange design facilitates connection to pipeline systems. The sealing blocks 203 provide additional sealing protection to prevent interface leakage. The welded connection ensures structural strength and sealing reliability.

[0023] The outer surface of the cylindrical valve body 1 is provided with a quick-release valve cover assembly 3, and the outer surface of the cylindrical valve body 1 is provided with a valve stem assembly 4. The quick-release valve cover assembly 3 includes a mounting block 302, the outer surface of the mounting block 302 is fixedly connected to the outer surface of the cylindrical valve body 1, a permanent magnet is fixedly embedded in the outer surface of the mounting block 302, a sealing gasket 303 is provided on the outer surface of the mounting block 302, a valve cover body 304 is provided on the side of the sealing gasket 303 away from the mounting block 302, and a set of mounting bolts 301 is provided on the outer surface of the valve cover body 304. The valve stem assembly 4 includes a valve stem body 402, an external handle 401 is fixedly connected to the outer surface of the valve stem body 402, and an anti-slip sleeve is fixedly connected to the outer surface of the external handle 401. The quick-release valve cover assembly 3 consists of a mounting block 302, a permanent magnet, a sealing gasket 303, and a valve stem assembly 4. The cover body 304 consists of a mounting bolt 301, which is double-fixed by magnetic attraction and bolts. The sealing gasket 303 has a multi-layer structure and uses a permanent magnet for quick positioning. The mounting bolt 301 ensures final tightening. The modular design reduces maintenance time by more than 60%. The sealing gasket 303 can elastically deform to compensate for installation tolerances, allowing the equipment to be disassembled and assembled without special tools, greatly improving maintenance efficiency. The valve stem assembly 4 includes a valve stem body 402 and an external handle 401. The surface of the external handle 401 is textured with anti-slip material. The valve stem body 402 is made of high-strength chromium-molybdenum steel using an integrated forging process, which ensures the long-term reliability of the equipment. At the same time, the precision-machined transmission components can effectively ensure the accuracy of switch positioning.

[0024] The cylindrical valve body 1 has a double-stage sealing disc assembly 5 inside. An installation groove 6 is provided inside the cylindrical valve body 1. An outer metal sealing ring 503 is snapped onto the outer surface of the double-stage sealing disc assembly 5. An inner lip-shaped sealing ring 502 is fixedly embedded on the outer surface of the double-stage sealing disc assembly 5. A mating block 501 is provided on the outer surface of the double-stage sealing disc assembly 5, and the outer surface of the mating block 501 snaps onto the outer surface of the valve stem body 402. A floating valve seat 602 is snapped into the installation groove 6, and the outer surface of the floating valve seat 602 is fixedly connected to... A disc spring assembly 603 is connected to the floating valve seat 602, and an annular cavity 601 is provided on the outer surface of the floating valve seat 602. The outer surface of the disc spring assembly 603 is in close contact with the interior of the annular cavity 601. An inclined plate 604 is provided on the outer surface of the floating valve seat 602. The double-stage sealing disc plate assembly 5 adopts a double seal with an outer metal sealing ring 503 and an inner lip sealing ring 502. It is provided with a dedicated docking block 501 to connect with the valve stem body 402. The sealing surface of the equipment adopts a special profile design, and the outer metal sealing ring 503 provides the main seal. The inner lip seal ring 502 achieves secondary sealing, reducing the leakage rate to below 0.001% through a dual-stage sealing structure. The mating block 501 ensures transmission accuracy and eliminates gaps, making the equipment suitable for bidirectional flow conditions with a pressure resistance of PN40. The floating valve seat 602 achieves dynamic compensation through the disc spring assembly 603. The annular cavity 601 provides space for spring movement. The inclined plate 604 optimizes the sealing contact pressure distribution, and through automatic wear compensation, the wear can reach 0.5mm, extending the equipment's service life by more than 3 times. The disc spring assembly 603 ensures a constant sealing specific pressure, and the inclined plate 604 design increases the sealing surface contact pressure by 20%. The equipment is adaptable to temperature fluctuations ranging from -40℃ to 200℃. Each component adopts a modular design, requiring only the replacement of damaged parts during maintenance. All sealing links form a multi-layer protection system. The combination of quick-release structure and floating design enables a certain degree of maintenance-free operation. The entire equipment uses standardized interfaces for compatibility with existing piping systems, resulting in low modification costs.

[0025] The working principle of this utility model is as follows:

[0026] When in use, the fluid first enters the cylindrical valve body 1 through the flange interface assembly 2. The operator rotates the external handle 401 of the valve stem assembly 4 to drive the double-stage sealing disc assembly 5 to rotate, thereby opening and closing the valve. At the same time, the double-stage sealing disc assembly 5 forms a double seal through the outer metal sealing ring 503 and the inner lip sealing ring 502, ensuring zero leakage under high pressure differential or bidirectional flow conditions. At this time, the floating valve seat 602 dynamically compensates for wear under the elastic support of the disc spring assembly 603 and automatically adjusts the sealing pressure to adapt to pressure fluctuations. Finally, the quick-release valve cover assembly 3 achieves quick maintenance through the permanent magnet and the mounting bolt 301. The sealing block 203 of the flange interface assembly 2 further enhances the sealing performance of the pipeline connection.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new type of fully sealed disc valve characterized in that: The valve includes a cylindrical valve body (1), a set of flange interface assemblies (2) on the outer surface of the cylindrical valve body (1), a quick-release valve cover assembly (3) on the outer surface of the cylindrical valve body (1), a valve stem assembly (4) on the outer surface of the cylindrical valve body (1), a double-stage sealing disc assembly (5) inside the cylindrical valve body (1), and an installation groove (6) inside the cylindrical valve body (1).

2. A new type of fully sealed disc valve according to claim 1, characterized in that: Each of the flange interface assemblies (2) includes a flange (201), the outer surface of each flange (201) is fixedly connected to the outer surface of the cylindrical valve body (1), each flange (201) has a set of mounting holes (202) on its outer surface, and each flange (201) has a sealing block (203) fixedly connected to its outer surface.

3. A novel fully sealed disc valve according to claim 1, characterized in that: The quick-release valve cover assembly (3) includes a mounting block (302), the outer surface of which is fixedly connected to the outer surface of the cylindrical valve body (1), a permanent magnet is fixedly embedded on the outer surface of the mounting block (302), a sealing gasket (303) is provided on the outer surface of the mounting block (302), a valve cover body (304) is provided on the side of the sealing gasket (303) away from the mounting block (302), and a set of mounting bolts (301) is provided on the outer surface of the valve cover body (304).

4. A novel fully sealed disc valve according to claim 1, characterized in that: The valve stem assembly (4) includes a valve stem body (402), an external handle (401) is fixedly connected to the outer surface of the valve stem body (402), and an anti-slip sleeve is fixedly connected to the outer surface of the external handle (401).

5. A novel fully sealed disc valve according to claim 1, characterized in that: The outer surface of the dual-stage sealing disc assembly (5) is fitted with an outer metal sealing ring (503), and the outer surface of the dual-stage sealing disc assembly (5) is fixedly inlaid with an inner lip sealing ring (502). The outer surface of the dual-stage sealing disc assembly (5) is provided with a mating block (501), and the outer surface of the mating block (501) is engaged with the outer surface of the valve stem body (402).

6. A novel fully sealed disc valve according to claim 1, characterized in that: A floating valve seat (602) is snapped into the inside of the mounting groove (6). A disc spring assembly (603) is fixedly connected to the outer surface of the floating valve seat (602). An annular cavity (601) is provided on the outer surface of the floating valve seat (602). The outer surface of the disc spring assembly (603) is tightly fitted with the inside of the annular cavity (601). An inclined plate (604) is provided on the outer surface of the floating valve seat (602).

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