A double-sealed balanced cage regulating valve

Abstract

The utility model discloses a kind of double-sealing balance cage type regulating valve, belong to balance cage type regulating valve technical field, and its technical scheme main points include valve body, the bottom of the valve body is provided with detection mechanism, the left side of the valve body is provided with connecting piece, the inner wall of the valve body is clamped with rubber ring, the inner wall of the valve body is clamped with sealing ring, the detection mechanism includes liquid receiving box, the inner wall of the liquid receiving box is fixedly connected with humidity sensor, solve the existing balance cage type regulating valve when using, most lack special detection structure for sealing leakage, rely on artificial regular inspection, it is difficult to find sealing failure in real time, often cause leakage medium to be not perceived for a long time, and further cause environmental pollution, equipment corrosion or safety accident, simultaneously, the sealing structure of existing regulating valve is designed with single sealing element, and the sealing reliability is lower, single sealing element is damaged and easily directly lead to medium leakage, inconvenient for user to use.

Description

Technical Field

[0001] This utility model relates to the technical field of balanced cage regulating valves, and in particular to a double-sealed balanced cage regulating valve. Background Technology

[0002] A balanced cage control valve is an industrial valve device used in fluid pipeline systems to achieve precise control of medium flow and pressure. Its core feature is that it balances the pressure difference of the medium before and after the valve through a special structural design, reducing the unbalanced force on the valve core. It can adjust the valve core opening through a drive mechanism according to the control requirements of the pipeline system, change the medium flow cross-sectional area, and thus stabilize the control of medium flow or pressure.

[0003] Currently, when connecting balanced cage control valves to pipelines, flanges are typically used. To ensure sealing, a gasket is placed between the two flanges and sealant is used to connect the gasket to the flange. This can easily lead to situations where it is inconvenient to replace the sealing ring when its sealing performance deteriorates. An existing patent (publication number: CN222503052U) discloses a balanced cage type regulating valve, relating to the technical field of balanced cage type regulating valves. This utility model includes a regulating valve body, on which a sealing structure is provided. The sealing structure mainly consists of two sealing rings, which are respectively disposed at both ends of the valve body of the regulating valve body. Connecting rings are fixedly connected to both sides of the sealing rings, and the connecting rings are adapted to the inner diameter of both ends of the valve body of the regulating valve body. Several connecting rods are fixedly connected to both sides of the sealing rings. Several connecting grooves are respectively opened at both ends of the valve body of the regulating valve body. This utility model solves the problem that when the current balanced cage type regulating valve is connected to the pipeline, it is usually connected by a flange. In order to ensure the sealing performance, a gasket is placed between the two flanges and the gasket is connected to the flange with sealant. This makes it inconvenient to replace the sealing ring when the sealing performance of the sealing ring deteriorates.

[0004] To address the aforementioned issues, existing patents offer solutions. However, most existing balanced cage control valves lack dedicated detection structures for sealing leaks and rely heavily on manual periodic inspections. This makes it difficult to detect sealing failures in real time, often resulting in leaks going unnoticed for extended periods, which can lead to environmental pollution, equipment corrosion, or safety accidents. Furthermore, existing control valves often employ a single sealing element design, resulting in low sealing reliability. Damage to this single sealing element can easily lead to direct media leakage, making them inconvenient for users.

[0005] To address this, a double-sealed balanced cage regulating valve is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a double-sealed balanced cage control valve, which solves the problems of existing balanced cage control valves, which mostly lack a dedicated detection structure for sealing leaks and rely on manual periodic inspections, making it difficult to detect sealing failures in real time. This often results in leaked media going undetected for a long time, leading to environmental pollution, equipment corrosion, or safety accidents. At the same time, the sealing structure of existing control valves mostly adopts a single sealing element design, which has low sealing reliability. Damage to a single sealing element can easily lead to media leakage, making it inconvenient for users.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a double-sealed balanced cage regulating valve, comprising a valve body, a detection mechanism provided at the bottom of the valve body, a connector provided on the left side of the valve body, a rubber ring snapped into the inner wall of the valve body, a sealing ring snapped into the inner wall of the valve body, the detection mechanism comprising a liquid receiving box, a humidity sensor fixedly connected to the inner wall of the liquid receiving box, and a detection end fixedly connected to the right side of the humidity sensor.

[0008] Preferably, a convex ring is fixedly connected to the right side of the connector, and the inner wall of the convex ring is engaged with the surface of the rubber ring.

[0009] Preferably, the inner wall of the valve body is provided with an installation groove for use with a convex ring, and the inner wall of the valve body is provided with a first sealing groove for use with a rubber ring.

[0010] Preferably, the inner wall of the convex ring is provided with a positioning groove for use with the rubber ring, and the inner wall of the valve body is provided with a second sealing groove for use with the sealing ring.

[0011] Preferably, a connecting frame is fixedly connected to the right side of the liquid receiving box, and a liquid receiving groove is provided on the inner wall of the liquid receiving box.

[0012] Preferably, a fixing block is fixedly connected to the top of the connecting frame, and the top of the fixing block is fixedly connected to the bottom of the valve body.

[0013] Preferably, the valve body is made of gray cast iron, and the inner wall area corresponding to the valve body and the snap-fit ​​part is provided with a carburized layer with a depth of 0.5-1mm.

[0014] Preferably, the rubber ring is made of EPDM rubber, and the axial length of the rubber ring is 8-10 mm, and the radial thickness is 3-5 mm.

[0015] Preferably, the sealing ring is made of nitrile rubber, and the cross-sectional diameter of the sealing ring is 4-6 mm.

[0016] Preferably, the inner wall of the connector is movably connected to a fixing component, and the surface of the fixing component is movably connected to the inner wall of the valve body.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This application sets up a detection mechanism. The liquid receiving box in the detection mechanism can effectively receive the medium that may leak from the valve body sealing part, preventing the leaked medium from dripping directly into the external environment and causing pollution or safety hazards. The humidity sensor fixed on the inner wall of the liquid receiving box can detect whether there is a leaking medium in the liquid receiving box in real time through the detection end on the right side, and promptly capture the sealing failure signal. Compared with manual inspection, it can significantly shorten the leakage detection time and reduce the risk of equipment damage and process interruption caused by leakage. 2. This application uses a rubber ring, which is snapped onto the inner wall of the valve body to form a double sealing structure with the sealing ring. The two seals can block the leakage of media through different paths. Compared with a single seal, this can improve the sealing reliability and reduce the probability of seal failure caused by aging or wear of a single seal, making it easier for users to use. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the double-sealed balanced cage regulating valve of this utility model; Figure 2 This is a structural diagram of the valve body of this utility model; Figure 3 This is a structural diagram of the rubber ring of this utility model; Figure 4 This is a structural diagram of the convex ring of this utility model; Figure 5 This is a structural diagram of the testing mechanism of this utility model.

[0019] In the diagram, 1. Valve body; 2. Detection mechanism; 201. Humidity sensor; 202. Liquid receiving box; 203. Detection end; 3. Connector; 4. Rubber ring; 5. Sealing ring; 6. Raised ring; 7. Mounting groove; 8. First sealing groove; 9. Positioning groove; 10. Second sealing groove; 11. Connecting frame; 12. Liquid receiving groove; 13. Fixing block; 14. Fixing assembly. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 The present invention provides the following technical solution: A double-sealed balanced cage regulating valve includes a valve body 1, a detection mechanism 2 at the bottom of the valve body 1, a connector 3 on the left side of the valve body 1, a rubber ring 4 and a sealing ring 5 snapped into the inner wall of the valve body 1. The detection mechanism 2 includes a liquid receiving box 202, a humidity sensor 201 fixedly connected to the inner wall of the liquid receiving box 202, and a detection end 203 fixedly connected to the right side of the humidity sensor 201.

[0022] In this embodiment: By setting up the detection mechanism 2, the liquid receiving box 202 in the detection mechanism 2 can effectively receive the medium that may leak from the sealing part of the valve body 1, preventing the leaked medium from dripping directly into the external environment and causing pollution or safety hazards. The humidity sensor 201 fixed on the inner wall of the liquid receiving box 202 can detect whether there is a leaking medium in the liquid receiving box 202 in real time through the detection end 203 on the right side, and capture the sealing failure signal in time. Compared with manual inspection, it can significantly shorten the leakage detection time and reduce the risk of equipment damage and process interruption caused by leakage. By setting up the rubber ring 4, the rubber ring 4 and the sealing ring 5 that are snapped on the inner wall of the valve body 1 form a double sealing structure. The two seals can block the leakage of the medium through different paths respectively. Compared with a single seal, it can improve the sealing reliability and reduce the probability of sealing failure caused by aging and wear of a single seal, making it convenient for users to use.

[0023] Specifically, such as Figure 2 , Figure 4 As shown, a protruding ring 6 is fixedly connected to the right side of the connector 3, and the inner wall of the protruding ring 6 is engaged with the surface of the rubber ring 4.

[0024] Specifically, such as Figure 3 As shown, the inner wall of the valve body 1 is provided with an installation groove 7 for use with the convex ring 6, and the inner wall of the valve body 1 is provided with a first sealing groove 8 for use with the rubber ring 4.

[0025] Specifically, such as Figure 3 , Figure 4 As shown, the inner wall of the convex ring 6 is provided with a positioning groove 9 for use with the rubber ring 4, and the inner wall of the valve body 1 is provided with a second sealing groove 10 for use with the sealing ring 5.

[0026] In this embodiment: by setting the convex ring 6, the rubber ring 4 can be radially limited, ensuring the stability of the sealing position of the rubber ring 4. The mounting groove 7 opened in the inner wall of the valve body 1 can provide precise assembly positioning for the convex ring 6, ensuring the fitting accuracy between the convex ring 6 and the valve body 1, and facilitating improved sealing effect. The first sealing groove 8 opened in the inner wall of the valve body 1 can form a wrapping constraint on the rubber ring 4, enhancing the tightness of the fit between the rubber ring 4 and the inner wall of the valve body 1. The positioning groove 9 opened in the inner wall of the convex ring 6 can further fix the position of the rubber ring 4 on the convex ring 6, preventing the rubber ring 4 from sliding relative to the convex ring 6. The second sealing groove 10 opened in the inner wall of the valve body 1 provides an independent assembly space for the sealing ring 5, isolating the sealing areas of the sealing ring 5 and the rubber ring 4 from each other, avoiding mutual interference between the two, and ensuring the independence of the double seal.

[0027] Specifically, such as Figure 5 As shown, a connecting bracket 11 is fixedly connected to the right side of the liquid receiving box 202, and a liquid receiving groove 12 is provided on the inner wall of the liquid receiving box 202.

[0028] Specifically, such as Figure 5 As shown, a fixing block 13 is fixedly connected to the top of the connecting frame 11, and the top of the fixing block 13 is fixedly connected to the bottom of the valve body 1.

[0029] In this embodiment: by setting a connecting frame 11 and a fixing block 13, the position of the connecting frame 11 and the fixing block 13 is fixed during use, which makes it easy to limit the position of the liquid receiving box 202 and facilitates the subsequent stable liquid receiving work of the liquid receiving box 202. The liquid receiving groove 12 set on the inner wall of the liquid receiving box 202 facilitates the subsequent work of receiving leaked media by the liquid receiving box 202.

[0030] Specifically, such as Figure 1 As shown, the valve body 1 is made of gray cast iron, and the inner wall area corresponding to the snap-fit ​​part of the valve body 1 is provided with a carburized layer with a depth of 0.5-1mm.

[0031] Specifically, such as Figure 3 As shown, the rubber ring 4 is made of EPDM rubber, and the axial length of the rubber ring is 8-10mm, and the radial thickness is 3-5mm.

[0032] Specifically, such as Figure 3 As shown, the sealing ring 5 is made of nitrile rubber, and the cross-sectional diameter of the sealing ring 5 is 4-6mm.

[0033] Specifically, such as Figure 1 As shown, a fixing component 14 is movably connected to the inner wall of the connector 3, and the surface of the fixing component 14 is movably connected to the inner wall of the valve body 1.

[0034] In this embodiment: the valve body 1 is made of gray cast iron, which has good rigidity and compressive strength, and can withstand the force of the medium pressure on the valve body 1, ensuring the structural stability of the valve body 1. The carburized layer in the inner wall area corresponding to the snap-fit ​​part of the valve body 1 can enhance the surface hardness and wear resistance of the area, reduce the wear caused by long-term friction between the rubber ring 4, the sealing ring 5 and the inner wall of the valve body 1, and extend the service life of the valve body 1. The rubber ring 4 is made of EPDM rubber, which has excellent aging resistance and media corrosion resistance, and can adapt to various working environments, extending the sealing life of the rubber ring 4. The sealing ring 5 is made of nitrile rubber, which has good elasticity and sealing performance. Its specific cross-sectional diameter can make the sealing ring 5 fully fill the second sealing groove 10, enhance the fit with the inner wall of the valve body 1, and improve the sealing reliability. By setting the fixing component 14, the connection strength between the connector 3 and the valve body 1 can be enhanced, avoiding the increase of the gap in the sealing part due to the loose connection between the two, and further ensuring the sealing stability of the double sealing structure.

[0035] Working principle: During the use of valve body 1, the sealing ring 5 is first snapped into the second sealing groove 10 on the inner wall of valve body 1, and the rubber ring 4 is snapped into the positioning groove 9 on the inner wall of the convex ring 6. Then, the convex ring 6 on the right side of the connector 3 is aligned with the mounting groove 7 on the inner wall of valve body 1 and snapped in place. The connector 3 is movably connected to the inner wall of valve body 1 through the fixing component 14 on the inner wall of the connector 3, which enhances the connection strength between the connector 3 and valve body 1. At this time, the rubber ring 4 and the sealing ring 5 form a double sealing structure in the valve body 1, which respectively blocks the leakage of media through different paths. When the sealing part leaks media, the leaked media will drip into the liquid receiving box 202 at the bottom of valve body 1. The liquid receiving groove 12 on the inner wall of the liquid receiving box 202 receives the leaked media. The humidity sensor 201 senses the media in the liquid receiving groove 12 through the detection end 203 on the right side and captures the sealing failure signal in real time, which is convenient for subsequent maintenance by the staff.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-sealed balanced cage regulating valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a detection mechanism (2) at the bottom, a connector (3) is provided on the left side of the valve body (1), a rubber ring (4) is snapped into the inner wall of the valve body (1), a sealing ring (5) is snapped into the inner wall of the valve body (1), the detection mechanism (2) includes a liquid receiving box (202), a humidity sensor (201) is fixedly connected to the inner wall of the liquid receiving box (202), and a detection end (203) is fixedly connected to the right side of the humidity sensor (201).

2. The double-sealed balanced cage regulating valve according to claim 1, characterized in that: A protruding ring (6) is fixedly connected to the right side of the connector (3), and the inner wall of the protruding ring (6) is engaged with the surface of the rubber ring (4).

3. The double-sealed balanced cage regulating valve according to claim 2, characterized in that: The inner wall of the valve body (1) is provided with an installation groove (7) for use with the convex ring (6), and the inner wall of the valve body (1) is provided with a first sealing groove (8) for use with the rubber ring (4).

4. The double-sealed balanced cage regulating valve according to claim 2, characterized in that: The inner wall of the convex ring (6) is provided with a positioning groove (9) for use with the rubber ring (4), and the inner wall of the valve body (1) is provided with a second sealing groove (10) for use with the sealing ring (5).

5. A double-sealed balanced cage regulating valve according to claim 1, characterized in that: A connecting frame (11) is fixedly connected to the right side of the liquid receiving box (202), and a liquid receiving groove (12) is provided on the inner wall of the liquid receiving box (202).

6. A double-sealed balanced cage regulating valve according to claim 5, characterized in that: The top of the connecting frame (11) is fixedly connected to a fixing block (13), and the top of the fixing block (13) is fixedly connected to the bottom of the valve body (1).

7. A double-sealed balanced cage regulating valve according to claim 1, characterized in that: The valve body (1) is made of gray cast iron, and the inner wall area corresponding to the snap-fit ​​part of the valve body (1) is provided with a carburized layer with a depth of 0.5-1mm.

8. A double-sealed balanced cage regulating valve according to claim 1, characterized in that: The rubber ring (4) is made of EPDM rubber, and the axial length of the rubber ring is 8-10mm and the radial thickness is 3-5mm.

9. A double-sealed balanced cage regulating valve according to claim 1, characterized in that: The sealing ring (5) is made of nitrile rubber, and the cross-sectional diameter of the sealing ring (5) is 4-6 mm.

10. A double-sealed balanced cage regulating valve according to claim 1, characterized in that: The inner wall of the connector (3) is movably connected to a fixing component (14), and the surface of the fixing component (14) is movably connected to the inner wall of the valve body (1).

Images