An impact-resistant butterfly valve

Abstract

This utility model discloses an impact-resistant butterfly valve, comprising a butterfly valve body, a buffer mechanism, and a pair of butterfly valve sealing mechanisms. Butterfly valve mounting parts are provided on both sides of the butterfly valve body. The pair of butterfly valve sealing mechanisms are installed on both sides of the butterfly valve body, and each sealing mechanism includes a butterfly valve sliding assembly and a buffer airbag. The butterfly valve sliding assembly is fixedly installed on one side of the butterfly valve body, and the buffer airbag is installed between the butterfly valve body and the butterfly valve mounting parts. The buffer mechanism is fixedly installed on the outside of the butterfly valve mounting parts. The butterfly valve sliding assembly includes a butterfly valve sliding ring and a butterfly valve sealing diaphragm. This impact-resistant butterfly valve, through the design of these mechanisms, reduces the impact of water hammer on the butterfly valve, reduces the occurrence of gaps or even loosening, and lowers the leakage of liquid inside the pipeline. Simultaneously, it reduces the probability of deformation of the internal structure of the butterfly valve, thus not only reducing leakage but also extending the service life of the butterfly valve.

Description

Technical Field

[0001] This utility model belongs to the field of butterfly valve technology, and specifically relates to an impact-resistant butterfly valve. Background Technology

[0002] Impact-resistant butterfly valves are a type of valve widely used in industrial applications. Their design and material selection are aimed at improving their performance and lifespan in high-pressure, high-corrosion, or high-wear environments. They typically employ a triple or double eccentric design to reduce the impact and wear of the fluid on the sealing surface. To improve corrosion resistance and wear resistance, impact-resistant butterfly valves usually use special materials such as duplex stainless steel, titanium alloys, and carbon steel.

[0003] A butterfly valve opens and closes its internal passage by rotating a disc. When it closes, the water flow upstream of the pipe is suddenly resisted, and the liquid in the pipe continues to move forward due to inertia, generating a pressure wave and forming a larger pressure peak, which is called the water hammer effect. Studies have shown that when the butterfly valve opening is small, such as 30%, the direct water hammer pressure is greater due to the reduced flow area, increased flow velocity gradient, and turbulent flow.

[0004] Currently, most butterfly valves are connected to pipelines via flanges. However, during daily opening and closing, they are usually affected by the water hammer effect. After long-term use, the connection is subjected to water hammer impact for a long time, which can easily cause gaps or even loosening, leading to leakage of liquid inside the pipeline. At the same time, water hammer impact can also cause deformation of the internal structure of the butterfly valve, which not only causes leakage but also reduces the service life of the butterfly valve.

[0005] Therefore, in order to address the aforementioned technical problems, it is necessary to provide an impact-resistant butterfly valve.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this invention is to provide an impact-resistant butterfly valve that can solve the problem that existing butterfly valves are prone to gaps at the connection points when subjected to water hammer impacts.

[0008] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0009] An impact-resistant butterfly valve includes: a butterfly valve body, a buffer mechanism, and a pair of butterfly valve sealing mechanisms. Butterfly valve mounting parts are provided on both sides of the butterfly valve body. A pair of butterfly valve sealing mechanisms are installed on both sides of the butterfly valve body. Each butterfly valve sealing mechanism includes a butterfly valve sliding assembly and a buffer air bladder. The butterfly valve sliding assembly is fixedly installed on one side of the butterfly valve body, and the buffer air bladder is installed between the butterfly valve body and the butterfly valve mounting parts. The buffer mechanism is fixedly installed on the outside of the butterfly valve mounting parts.

[0010] In one or more embodiments of this utility model, the butterfly valve sliding assembly includes: a butterfly valve sliding ring and a butterfly valve sealing diaphragm. The butterfly valve sliding ring is fixedly installed inside the butterfly valve body. The butterfly valve sealing diaphragm is fixedly installed inside the butterfly valve mounting component and is fixedly installed with the butterfly valve sliding ring.

[0011] In one or more embodiments of this utility model, a butterfly valve sealing ring is fixedly installed inside the butterfly valve mounting component.

[0012] In one or more embodiments of this utility model, a sealing groove matching the butterfly valve sealing ring is cut into the butterfly valve mounting component.

[0013] In one or more embodiments of this utility model, the buffer mechanism includes: a buffer positioning ring, a buffer sliding rod, and a buffer spring. The buffer positioning ring is fixedly installed on the outside of the butterfly valve mounting component. The buffer sliding rod is fixedly installed on the side of the buffer positioning ring near the butterfly valve body. The buffer spring is sleeved on the buffer sliding rod.

[0014] In one or more embodiments of this utility model, a buffer protective film is installed between the buffer positioning ring and the butterfly valve body.

[0015] In one or more embodiments of this utility model, multiple buffer sliding rods are provided, and the multiple buffer sliding rods are evenly distributed in a ring along the buffer positioning ring.

[0016] In one or more embodiments of this utility model, the buffer sliding rod is disposed through the butterfly valve body.

[0017] In one or more embodiments of this utility model, a buffer bearing is installed between the buffer sliding rod and the butterfly valve body.

[0018] In one or more embodiments of this utility model, the buffer spring is disposed between the buffer positioning ring and the butterfly valve body.

[0019] Compared with the prior art, the impact-resistant butterfly valve of this utility model reduces the impact of water hammer effect on the butterfly valve through the setting of corresponding mechanisms, reduces the occurrence of gaps or even loosening, reduces the leakage of liquid inside the pipeline, and at the same time reduces the probability of deformation of the internal structure of the butterfly valve. This not only reduces the leakage of the butterfly valve, but also improves the service life of the butterfly valve. Attached Figure Description

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

[0021] Figure 1 This is a perspective sectional view of an impact-resistant butterfly valve in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0023] Figure 3 This is a partial three-dimensional view of the impact-resistant butterfly valve in one embodiment of the present invention;

[0024] Figure 4 for Figure 3 Schematic diagram of the structure at point B;

[0025] Figure 5 This is a perspective view of an impact-resistant butterfly valve in one embodiment of the present invention.

[0026] Explanation of key figure labels:

[0027] 1-Butterfly valve body, 11-Butterfly valve mounting component, 2-Butterfly valve sealing mechanism, 21-Butterfly valve sliding assembly, 211-Butterfly valve sliding ring, 212-Butterfly valve sealing diaphragm, 213-Butterfly valve sealing ring, 22-Buffer airbag, 3-Buffer mechanism, 31-Buffer positioning ring, 311-Buffer protective diaphragm, 32-Buffer sliding rod, 321-Buffer bearing, 33-Buffer spring. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0029] like Figures 1 to 5 As shown, an impact-resistant butterfly valve according to one embodiment of the present invention includes: a butterfly valve body 1, a buffer mechanism 3, and a pair of butterfly valve sealing mechanisms 2. Butterfly valve mounting parts 11 are provided on both sides of the butterfly valve body 1. A pair of butterfly valve sealing mechanisms 2 are installed on both sides of the butterfly valve body 1. Each butterfly valve sealing mechanism 2 includes a butterfly valve sliding assembly 21 and a buffer airbag 22. The butterfly valve sliding assembly 21 is fixedly installed on one side of the butterfly valve body 1, and the buffer airbag 22 is installed between the butterfly valve body 1 and the butterfly valve mounting parts 11. The buffer mechanism 3 is fixedly installed on the outside of the butterfly valve mounting parts 11.

[0030] The method of using the impact-resistant butterfly valve is as follows: Connect and install the butterfly valve mounting parts 11 on both sides to the pipeline. When the butterfly valve body 1 is closed, the water hammer effect will impact the butterfly valve body 1. At this time, the butterfly valve body 1 is impacted by the water flow and moves away from the water flow to relieve the impact force. At the same time, the butterfly valve sliding assembly 21 keeps the pipeline closed, reducing the probability of liquid leakage. The buffer airbag 22 can not only improve the sealing performance, but also buffer the butterfly valve mounting parts 11. The buffer mechanism 3 can buffer the butterfly valve body 1 and relieve the impact force on the sliding of the butterfly valve body 1.

[0031] like Figures 1 to 4 As shown, the butterfly valve sliding assembly 21 includes a butterfly valve sliding ring 211 and a butterfly valve sealing diaphragm 212. The butterfly valve sliding ring 211 is fixedly installed inside the butterfly valve body 1. The butterfly valve sliding ring 211 can reduce the probability of liquid leakage between the butterfly valve body 1 and the butterfly valve mounting part 11, improve the sealing performance between the butterfly valve body 1 and the butterfly valve mounting part 11, and at the same time, it will not affect the normal sliding of the butterfly valve body 1, reduce the obstruction to the sliding of the butterfly valve body 1, and guide the sliding of the butterfly valve body 1, reducing the probability of the butterfly valve body 1 disengaging, thus improving the stability of the butterfly valve body 1 and making the sliding of the butterfly valve body 1 smoother. The butterfly valve sealing diaphragm 212 is fixedly installed inside the butterfly valve mounting part 11 and is also fixedly installed with the butterfly valve sliding ring 211. The butterfly valve sealing diaphragm 212 can improve the sealing performance between the butterfly valve sliding ring 211 and the butterfly valve mounting part 11, reduce the possibility of leakage between the butterfly valve sliding ring 211 and the butterfly valve mounting part 11, and reduce liquid leakage in the pipeline. At the same time, the butterfly valve sealing diaphragm 212 does not obstruct the sliding of the butterfly valve sliding ring 211, thus improving the performance of the butterfly valve sliding ring 211.

[0032] like Figures 1 to 3 As shown, a butterfly valve sealing ring 213 is fixedly installed inside the butterfly valve mounting component 11, which can improve the sealing performance between the butterfly valve sliding ring 211 and the butterfly valve mounting component 11 and reduce the probability of liquid leakage.

[0033] like Figures 1 to 3As shown, the butterfly valve mounting part 11 has a sealing groove that matches the butterfly valve sealing ring 213, which allows the butterfly valve sealing ring 213 to be placed, providing the necessary space for its installation and reducing the impact of the butterfly valve sealing ring 213 on the sealing effect.

[0034] like Figures 1 to 5 As shown, the buffer mechanism 3 includes a buffer positioning ring 31, a buffer sliding rod 32, and a buffer spring 33. The buffer positioning ring 31 is fixedly installed on the outside of the butterfly valve mounting part 11, supporting the buffer sliding rod 32, reducing the likelihood of tilting, improving its stability, and making its displacement smoother. The buffer sliding rod 32 is fixedly installed on the side of the buffer positioning ring 31 near the butterfly valve body 1, and can slide synchronously with the buffer positioning ring 31. This sliding motion compresses the space of the buffer spring 33, which then buffers the buffer positioning ring 31. The buffer spring 33 is sleeved on the buffer sliding rod 32, allowing it to be compressed and buffered, further cushioning the buffer positioning ring 31 and reducing damage to the butterfly valve body 1 caused by water hammer.

[0035] like Figures 1 to 3 As shown, a buffer protective film 311 is installed between the buffer positioning ring 31 and the butterfly valve body 1, which can protect the buffer sliding rod 32 and the buffer spring 33, reduce the corrosion and dust accumulation on the buffer sliding rod 32 and the buffer spring 33, and improve the service life of the buffer sliding rod 32 and the buffer spring 33.

[0036] like Figures 1 to 4 As shown, multiple buffer sliding rods 32 are provided, which improves the balance of the buffer positioning ring 31, thereby improving the balance of the butterfly valve mounting part 11 and reducing the probability of gaps appearing between the butterfly valve body 1 and the butterfly valve mounting part 11. The multiple buffer sliding rods 32 are evenly distributed in a ring along the buffer positioning ring 31, which can further reduce the probability of the buffer positioning ring 31 tilting and improve the stability of the buffer positioning ring 31. At the same time, more buffer springs 33 can be installed, further improving the buffering effect on the butterfly valve mounting part 11.

[0037] like Figures 1 to 5 As shown, the buffer sliding rod 32 is installed through the butterfly valve body 1. The buffer sliding rod 32 can be supported by the cooperation between the butterfly valve body 1 and the buffer positioning ring 31, reducing the probability of the buffer sliding rod 32 tilting.

[0038] like Figures 1 to 2As shown, a buffer bearing 321 is installed between the buffer sliding rod 32 and the butterfly valve body 1, which reduces the friction between the buffer sliding rod 32 and the butterfly valve body 1, improves the smoothness of sliding between the buffer sliding rod 32 and the butterfly valve body 1, and extends the service life of the buffer sliding rod 32.

[0039] like Figures 1 to 5 As shown, the buffer spring 33 is disposed between the buffer positioning ring 31 and the butterfly valve body 1, which can compress the buffer spring 33 when the butterfly valve body 1 is displaced, so that the buffer spring 33 can buffer the displacement of the butterfly valve body 1.

[0040] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] 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. An impact-resistant butterfly valve, characterized in that, include: The butterfly valve body has butterfly valve mounting parts on both sides; A pair of butterfly valve sealing mechanisms are installed on both sides of the butterfly valve body. The butterfly valve sealing mechanism includes a butterfly valve sliding assembly and a buffer airbag. The butterfly valve sliding assembly is fixedly installed on one side of the butterfly valve body, and the buffer airbag is installed between the butterfly valve body and the butterfly valve mounting component. A buffer mechanism is fixedly installed on the outside of the butterfly valve mounting component.

2. The impact-resistant butterfly valve according to claim 1, characterized in that, The butterfly valve sliding assembly includes: The butterfly valve sliding ring is fixedly installed inside the butterfly valve body; The butterfly valve sealing diaphragm is fixedly installed inside the butterfly valve mounting component and is also fixedly installed with the butterfly valve sliding ring.

3. The impact-resistant butterfly valve according to claim 1, characterized in that, The butterfly valve mounting hardware has a butterfly valve sealing ring fixedly installed inside.

4. The impact-resistant butterfly valve according to claim 3, characterized in that, The butterfly valve mounting component has a sealing groove that matches the butterfly valve sealing ring.

5. The impact-resistant butterfly valve according to claim 1, characterized in that, The buffer mechanism includes: A buffer positioning ring is fixedly installed on the outside of the butterfly valve mounting component; A buffer sliding rod is fixedly installed on the side of the buffer positioning ring near the butterfly valve body; A buffer spring is sleeved and installed on the buffer sliding rod.

6. The impact-resistant butterfly valve according to claim 5, characterized in that, A buffer protective membrane is installed between the buffer positioning ring and the butterfly valve body.

7. The impact-resistant butterfly valve according to claim 5, characterized in that, Multiple buffer sliding rods are provided, and the multiple buffer sliding rods are evenly distributed in a ring along the buffer positioning ring.

8. The impact-resistant butterfly valve according to claim 7, characterized in that, The buffer sliding rod is installed through the butterfly valve body.

9. The impact-resistant butterfly valve according to claim 5, characterized in that, A buffer bearing is installed between the buffer sliding rod and the butterfly valve body.

10. The impact-resistant butterfly valve according to claim 5, characterized in that, The buffer spring is positioned between the buffer positioning ring and the butterfly valve body.

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