Quick-mounting type valve body connecting structure of marine butterfly valve

Abstract

The utility model discloses a quick -wearing type valve body connecting structure of marine butterfly valve relates to marine valve technical field. The utility model discloses a butterfly valve body one side detachably connected with the pipeline, the butterfly valve body inner chamber is provided with the connecting assembly. The utility model discloses connecting assembly through the meshing drive of worm and worm wheel drives the sliding of connecting plate, realizes the quick snap -on or separation of connecting plate and pipeline connecting groove, need not to operate manually one by one to multiple fastening parts, effectively simplifies the dismounting process of butterfly valve body and pipeline, especially adapts the operation environment of the narrow space or insufficient light in the cabin of the ship, and the efficiency of pipeline routine overhaul, maintenance and fault emergency treatment is greatly promoted, and the labor intensity of staff is reduced, and the design that the center distance of the notch one end to the other end gradually increases can drive the connecting plate to the connecting groove direction continuously and tightly snap -on in the transmission process, avoids the loosening of connecting structure under the vibration environment of the navigation of the ship.

Description

Technical Field

[0001] This utility model belongs to the field of marine valve technology, and in particular relates to a quick-install valve body connection structure for marine butterfly valves. Background Technology

[0002] Butterfly valves, as a commonly used flow control valve with a compact structure and excellent flow regulation performance, occupy an indispensable and important position in ship piping systems. They are widely used in key links such as seawater cooling systems, fuel oil delivery systems, ballast water systems, bilge water discharge systems, and various hydraulic control pipelines. The reliability of their connection structure is directly related to the airtightness and operational stability of the ship piping system. Once the connection structure becomes loose or the seal fails, it is very easy to cause fluid leakage in the pipeline. This may not only cause related equipment to malfunction and shut down due to lack of oil or water, but in severe cases, it may also cause major safety accidents such as marine pollution. On the other hand, the ease of disassembly and assembly of the connection structure directly affects the efficiency of daily inspection, maintenance, and emergency handling of ship piping, especially when valve failure occurs during ship navigation.

[0003] Chinese patent application CN216715262U discloses a marine butterfly valve with a signal feedback device, comprising a valve body, a valve plate rotatably mounted on the inner side of the valve body via a valve stem; a fixing ring welded to the side of the valve plate; a support plate mounted on the side of the fixing ring by countersunk screws; a signal feedback device fixed to the top of the valve body by screws; and a dustproof box covering the signal feedback device. After prolonged damage from fluid erosion, the support plate can be replaced directly without replacing the entire valve plate, reducing costs and saving time. Furthermore, the dustproof box provides dust protection for the indicator block.

[0004] While this patent improves safety by enabling valve opening / closing status recognition through a signal feedback device and protects the indicator block of the signal feedback device from dust through a dustproof box, it lacks a specific design for the connection structure between the valve body and the pipeline. In existing technology, the connection between the marine butterfly valve body and the pipeline relies on a large number of fastening bolts that pass through the corresponding through holes of the flanges on both sides and are tightened with nuts to achieve a sealed connection between the valve body and the pipeline. During installation, disassembly, and maintenance, operators must manually align, pre-tighten, and finally tighten each bolt and nut. The entire process is cumbersome and time-consuming, especially in the confined space or poor lighting environment of a ship's cabin, where bolt alignment and tool operation are extremely inconvenient. This results in low efficiency for valve replacement or maintenance and increases the labor intensity of the workers.

[0005] To address these issues, we have provided a quick-connect valve body structure for marine butterfly valves. Utility Model Content

[0006] The purpose of this utility model is to provide a quick-install valve body connection structure for marine butterfly valves. By cooperating with the butterfly valve body and the connecting components, it solves the problem of difficult installation and disassembly of the valve body connection structure for marine butterfly valves in the prior art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a quick-install valve body connection structure for marine butterfly valves, including a butterfly valve body. A pipe is detachably connected to one side of the butterfly valve body. A connecting assembly is provided in the inner cavity of the butterfly valve body. The connecting assembly includes a worm gear, the bottom of which is rotatably connected to the butterfly valve body. A worm wheel meshes with the surface of the worm gear, and the inner side of the worm wheel is rotatably connected to the butterfly valve body. A groove is formed on the surface of the worm wheel, with the center distance gradually increasing from one end to the other. A connecting plate is slidably connected to the inner cavity of the groove. A connecting groove is formed on the surface of the pipe. One side of the connecting plate engages with the connecting groove. There are four connecting plates, which can evenly distribute the connection points between the pipe and the butterfly valve body, avoiding deformation or damage to the connection parts caused by localized stress concentration, and further ensuring the long-term stability of the overall connection structure. One side of the connecting groove is inclined, which not only provides guidance for the connecting plate and reduces the alignment adjustment steps between the connecting plate and the connecting groove during installation, but also allows the pipe to be squeezed and moved closer to the butterfly valve body when it comes into contact with the connecting plate, making the connection end face of the pipe and the butterfly valve body fit more tightly and reducing the gap between them.

[0009] The present invention is further configured such that a locking assembly is provided on the surface of the worm gear, the locking assembly including a pull rod, the surface of the pull rod being slidably connected to the butterfly valve body, a toothed plate being fixedly connected to one end of the pull rod, both sides of the toothed plate being slidably connected to the butterfly valve body, a spring being fixedly connected to the rear side of the toothed plate, the other end of the spring being fixedly connected to the butterfly valve body, a gear being engaged with the front side of the toothed plate, the inner side of the gear being fixedly connected to the worm gear, and two springs being symmetrically distributed on both sides of the toothed plate, which can provide a uniform elastic preload to the toothed plate, avoid the toothed plate from being skewed or jammed due to force on one side, and ensure that the toothed plate and the gear always maintain a stable engagement state.

[0010] The present invention is further configured such that a sliding groove is formed on the surface of the butterfly valve body, and the inner cavity of the sliding groove is slidably connected to the connecting plate. The sliding groove can provide precise guidance for the connecting plate and avoid misalignment of the connecting plate during the connection process.

[0011] The present invention is further configured such that a slide rod is provided in the inner cavity of the spring, one end of the slide rod is fixedly connected to the toothed plate, and the surface of the slide rod is slidably connected to the butterfly valve body. The slide rod can provide a limit for the spring and prevent it from displacing or twisting during its extension and contraction.

[0012] The present invention is further provided with a pull plate on one side of the butterfly valve body, and the pull plate is fixedly connected to the pull rod on one side. The pull plate can increase the contact area between the hand and the pull rod, so that the operator can pull the pull rod more easily.

[0013] The present invention is further configured such that a sealing gasket is provided on one side of the butterfly valve body, and the other side of the sealing gasket is fixedly connected to the pipeline. The sealing gasket can fill the connection gap between the pipeline and the butterfly valve body, thereby improving the connection sealing performance.

[0014] The present invention is further configured such that a positioning groove is provided on the surface of the pipe, a positioning rod is slidably connected to the inner cavity of the positioning groove, and the other end of the positioning rod is fixedly connected to the butterfly valve body. The positioning groove and the positioning rod can provide accurate positioning when the pipe is connected to the butterfly valve body.

[0015] The present invention is further configured such that a rotating handle is provided on the top of the butterfly valve body, and the bottom of the rotating handle is fixedly connected to the worm gear. The rotating handle allows the operator to connect or disconnect the butterfly valve body from the pipeline simply by rotating the rotating handle on the outside of the butterfly valve body.

[0016] The present invention has the following beneficial effects.

[0017] 1. The connecting assembly of this utility model drives the connecting plate to slide through the meshing transmission of the worm gear and worm wheel, realizing the quick engagement or disengagement of the connecting plate and the pipe connecting groove. It eliminates the need for manual operation of multiple fastening components one by one, effectively simplifying the disassembly and assembly process of the valve body and the pipeline. It is especially suitable for the confined space or poor lighting environment inside the ship's cabin, greatly improving the efficiency of daily pipeline inspection, maintenance and emergency fault handling, and reducing the labor intensity of the staff. The design of the center distance gradually increasing from one end of the groove to the other can drive the connecting plate to continuously fit and tightly engage in the direction of the connecting groove during the transmission process, avoiding the loosening of the connection structure under the vibration environment of ship navigation, ensuring the airtightness of the connection between the valve body and the pipeline, and reducing the risk of fluid leakage.

[0018] 2. The locking component of this utility model can effectively limit the accidental rotation of the worm gear through the engagement of the toothed plate and the gear, and avoid the loosening or malfunction of the connecting component due to the continuous vibration during the ship's navigation. It further ensures the stable engagement of the connecting plate and the pipe connecting groove, reduces the risk of sealing failure at the connection between the valve body and the pipe, and meets the stringent requirements of the ship's pipeline system for operational stability. The toothed plate can be quickly driven to slide to lock or unlock with the help of the pull rod. The operation process is simple and intuitive and does not require the use of complicated special tools. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a perspective view of the quick-connect valve body connection structure for marine butterfly valves.

[0021] Figure 2 This is a 3D view of the connecting components in the quick-install valve body connection structure of a marine butterfly valve.

[0022] Figure 3 This is an enlarged view of point A in the quick-connect valve body connection structure of a marine butterfly valve.

[0023] Figure 4 A perspective view of the locking component in the quick-release valve body connection structure of a marine butterfly valve.

[0024] Figure 5 This is a three-dimensional view of the butterfly valve body in the quick-install valve body connection structure for marine butterfly valves.

[0025] In the attached diagram: 1. Butterfly valve body; 2. Pipeline; 3. Connecting assembly; 301. Worm gear; 302. Worm wheel; 303. Groove; 304. Connecting plate; 305. Connecting groove; 4. Locking assembly; 401. Pull rod; 402. Toothed plate; 403. Spring; 404. Gear; 5. Slide groove; 6. Slide rod; 7. Pull plate; 8. Sealing gasket; 9. Positioning groove; 10. Positioning rod; 11. Rotary handle. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figure 1-5 This utility model is a quick-install valve body connection structure for marine butterfly valves, including a butterfly valve body 1. A pipe 2 is detachably connected to one side of the butterfly valve body 1. A connecting component 3 is provided in the inner cavity of the butterfly valve body 1. The connecting component 3 includes a worm 301. The bottom of the worm 301 is rotatably connected to the butterfly valve body 1. A worm wheel 302 is engaged on the surface of the worm 301. The inner side of the worm wheel 302 is rotatably connected to the butterfly valve body 1. A groove 303 is opened on the surface of the worm wheel 302. The center distance from one end of the groove 303 to the other end gradually increases. A connecting plate 304 is slidably connected to the inner cavity of the groove 303. A connecting groove 305 is opened on the surface of the pipe 2. One side of the connecting plate 304 is engaged with the connecting groove 305.

[0028] Specifically: There are four connecting plates 304, which can evenly distribute the connection points between the pipe 2 and the butterfly valve body 1, avoid deformation or damage to the connection parts caused by localized stress concentration, and further ensure the long-term stability of the overall connection structure. One side of the connecting groove 305 is inclined, which not only provides guidance for the connecting plate 304 and reduces the alignment adjustment steps between the connecting plate 304 and the connecting groove 305 during installation, but also allows the pipe 2 to be squeezed and moved closer to the butterfly valve body 1 when it comes into contact with the connecting plate 304, so that the connection end face of the pipe 2 and the butterfly valve body 1 fits more tightly and reduces the gap between them.

[0029] Please see Figure 1-5 The worm gear 301 has a locking assembly 4 on its surface. The locking assembly 4 includes a pull rod 401, which is slidably connected to the butterfly valve body 1. One end of the pull rod 401 is fixedly connected to a toothed plate 402, and both sides of the toothed plate 402 are slidably connected to the butterfly valve body 1. A spring 403 is fixedly connected to the rear side of the toothed plate 402, and the other end of the spring 403 is fixedly connected to the butterfly valve body 1. A gear 404 is engaged with the front side of the toothed plate 402, and the inner side of the gear 404 is fixedly connected to the worm gear 301. A groove 5 is formed on the surface of the butterfly valve body 1, and the inner cavity of the groove 5 is slidably connected to the connecting plate 304. The inner cavity of the spring 403 is provided with a slide rod 6. One end of the slide rod 6 is fixedly connected to the toothed plate 402. The surface of the slide rod 6 is slidably connected to the butterfly valve body 1. A pull plate 7 is provided on one side of the butterfly valve body 1. One side of the pull plate 7 is fixedly connected to the pull rod 401. A sealing gasket 8 is provided on one side of the butterfly valve body 1. The other side of the sealing gasket 8 is fixedly connected to the pipe 2. A positioning groove 9 is opened on the surface of the pipe 2. A positioning rod 10 is slidably connected to the inner cavity of the positioning groove 9. The other end of the positioning rod 10 is fixedly connected to the butterfly valve body 1. A rotating handle 11 is provided on the top of the butterfly valve body 1. The bottom of the rotating handle 11 is fixedly connected to the worm gear 301.

[0030] Specifically: There are two springs 403, symmetrically distributed on both sides of the toothed plate 402, which can provide uniform elastic preload to the toothed plate 402, preventing the toothed plate 402 from tilting or jamming due to unilateral force, and ensuring that the toothed plate 402 and the gear 404 always maintain a stable engagement state. The slide groove 5 can provide precise guidance for the connecting plate 304, preventing the connecting plate 304 from being misaligned during the connection process. The slide rod 6 can provide a limit for the spring 403, preventing it from shifting or twisting during extension and retraction. The pull plate 7 can increase the contact area between the hand and the pull rod 401, making it easier for the operator to pull the pull rod 401. The sealing gasket 8 can fill the connection gap between the pipe 2 and the butterfly valve body 1, improving the connection sealing performance. The positioning groove 9 and the positioning rod 10 can provide precise positioning when the pipe 2 is connected to the butterfly valve body 1. The setting of the handle 11 allows the operator to connect or disconnect the butterfly valve body 1 and the pipe 2 simply by rotating the handle 11 on the outside of the butterfly valve body 1.

[0031] The working principle of this utility model is as follows: During installation, after inserting the positioning groove 9 on the pipe 2 into the position of the positioning rod 10 on the butterfly valve body 1, the pull rod 401 pulls the toothed plate 402 to compress the spring 403 and disengage it from the gear 404, which allows the worm gear 301 to rotate. The worm gear 301 drives the worm wheel 302 to rotate. The worm wheel 302 drives the four connecting plates 304 to move towards the center of the pipe 2 simultaneously through the slot 303. When they come into contact with the connecting groove 305, they will squeeze the pipe 2 closer to the butterfly valve body 1 and thus press the sealing gasket 8. If the pipe 2 is fixed, the butterfly valve body 1 will move closer to the pipe 2. Then, the pull rod 401 is released, the spring 403 extends and pushes the toothed plate 402 to engage with the gear 404, thereby locking the worm gear 301.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A quick-connect valve body structure for marine butterfly valves, comprising a butterfly valve body (1), characterized in that: A pipe (2) is detachably connected to one side of the butterfly valve body (1), and a connecting component (3) is provided in the inner cavity of the butterfly valve body (1). The connecting assembly (3) includes a worm (301), the bottom of which is rotatably connected to the butterfly valve body (1), a worm wheel (302) meshing on the surface of the worm (301), the inner side of which is rotatably connected to the butterfly valve body (1), a slot (303) is provided on the surface of the worm wheel (302), the center distance from one end of the slot (303) gradually increases, a connecting plate (304) is slidably connected to the inner cavity of the slot (303), a connecting groove (305) is provided on the surface of the pipe (2), and one side of the connecting plate (304) is engaged with the connecting groove (305).

2. The quick-connect valve body connection structure for marine butterfly valves according to claim 1, characterized in that: The worm gear (301) is provided with a locking component (4), which includes a pull rod (401). The surface of the pull rod (401) is slidably connected to the butterfly valve body (1). One end of the pull rod (401) is fixedly connected to a toothed plate (402). Both sides of the toothed plate (402) are slidably connected to the butterfly valve body (1). A spring (403) is fixedly connected to the rear side of the toothed plate (402). The other end of the spring (403) is fixedly connected to the butterfly valve body (1). A gear (404) is engaged with the front side of the toothed plate (402). The inner side of the gear (404) is fixedly connected to the worm gear (301).

3. The quick-connect valve body connection structure for marine butterfly valves according to claim 1, characterized in that: The butterfly valve body (1) has a groove (5) on its surface, and the inner cavity of the groove (5) is slidably connected to the connecting plate (304).

4. The quick-connect valve body connection structure for marine butterfly valves according to claim 2, characterized in that: The inner cavity of the spring (403) is provided with a slide rod (6), one end of the slide rod (6) is fixedly connected to the toothed plate (402), and the surface of the slide rod (6) is slidably connected to the butterfly valve body (1).

5. The quick-install valve body connection structure for marine butterfly valves according to claim 2, characterized in that: A pull plate (7) is provided on one side of the butterfly valve body (1), and one side of the pull plate (7) is fixedly connected to the pull rod (401).

6. The quick-connect valve body connection structure for marine butterfly valves according to claim 1, characterized in that: A sealing gasket (8) is provided on one side of the butterfly valve body (1), and the other side of the sealing gasket (8) is fixedly connected to the pipeline (2).

7. The quick-connect valve body connection structure for marine butterfly valves according to claim 1, characterized in that: The pipe (2) has a positioning groove (9) on its surface. A positioning rod (10) is slidably connected to the inner cavity of the positioning groove (9). The other end of the positioning rod (10) is fixedly connected to the butterfly valve body (1).

8. The quick-install valve body connection structure for marine butterfly valves according to claim 1, characterized in that: The top of the butterfly valve body (1) is provided with a handle (11), and the bottom of the handle (11) is fixedly connected to the worm gear (301).

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