A knife-in-cylinder double gate valve structure
Patent Information
- Application Number
- CN202522259941.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-27
AI Technical Summary
[0005]本实用新型的目的在于提供一种刀筒双闸板阀结构，解决了现有技术中传统单闸板阀在长期使用过程中，常因闸板阀磨损、介质腐蚀或操作不当导致密封失效，从而引发泄漏的问题
[0011]本实用新型的一种刀筒双闸板阀结构，在使用换刀工装进行换刀作业时，刀具缩回到闸板阀后端。通过闸板阀专用传动装置关闭闸板阀，左右闸板阀上V型的设计以及一侧闸板阀第一V型槽和第二V型槽上设置橡胶密封。V型设计可以自动调整位置，确保V型槽两侧密封面同时均匀受压，形成有效密封，通过两个闸板阀的设计意味着有两个独立的闸板同时与阀座接触，这种设计有助于实现更加均匀的密封压力分布，从而减少泄漏的风险，在高压差、高温或腐蚀性介质的应用中，双闸板阀的密封性能尤为突出。
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Figure CN224800997U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gate valve technology, and in particular to a knife-cylinder double gate valve structure. Background Technology
[0002] As a key component of the cutter barrel, the sealing performance of the gate valve directly affects the safety and efficiency of construction.
[0003] Traditional single gate valves often experience sealing failure and leakage problems during long-term use due to gate valve wear, medium corrosion, or improper operation.
[0004] To address the aforementioned issues, a dual-gate valve structure and a patented V-type sealing technology are proposed. The aim is to ensure sealing performance through the dual-gate valve structure and optimized sealing component design, thereby improving construction safety. Utility Model Content
[0005] The purpose of this utility model is to provide a knife-tube double gate valve structure, which solves the problem that traditional single gate valves in the prior art often fail to seal due to gate valve wear, medium corrosion or improper operation during long-term use, thus causing leakage.
[0006] To achieve the above objectives, this utility model provides a double gate valve structure for a knife barrel, comprising two gate valves, a cutting tool, and a knife barrel; The two gate valves each include a rubber seal, a valve stem, a first valve body, and a second valve body. The first valve body has a first V-groove, and the second valve body has a second V-groove. The two gate valves are respectively disposed on the knife cylinder. The knife is disposed inside the knife cylinder and is slidably adapted to the knife cylinder. The first valve body and the second valve body are respectively fixedly connected to the valve stem. The first V-groove and the second V-groove are adapted to each other. The rubber seal is disposed between the first V-groove and the second V-groove.
[0007] The knife barrel double gate valve structure also includes a pressure gauge, which is disposed on the outer wall of the knife barrel and located at the upper end of the knife barrel.
[0008] The double gate valve structure of the cutter barrel also includes a water inlet ball valve, which is disposed on the outer wall of the cutter barrel and located at the lower end of the cutter barrel.
[0009] The cutting tool includes a cutting tool body and a connecting cylinder, and the connecting cylinder is detachably connected to the cutting tool body.
[0010] The pressure gauge and the water inlet ball valve are located between the two gate valves.
[0011] This utility model discloses a double-gate valve structure with a tool changer. During tool changing operations, the tool retracts to the rear end of the gate valve. The gate valve is closed via a dedicated transmission device. The left and right gate valves feature a V-shaped design, and rubber seals are installed on the first and second V-grooves of one side of the gate valve. The V-shaped design automatically adjusts its position, ensuring that the sealing surfaces on both sides of the V-groove are simultaneously and evenly pressurized, forming an effective seal. The design of two gate valves means that two independent gates simultaneously contact the valve seat. This design helps achieve a more uniform sealing pressure distribution, thereby reducing the risk of leakage. The sealing performance of the double-gate valve is particularly outstanding in applications involving high pressure differentials, high temperatures, or corrosive media. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0013] Figure 1 This is a cross-sectional view of the entire utility model.
[0014] Figure 2 This is an unfolded sectional view of the present invention.
[0015] Figure 3 This is the utility model Figure 2 A sectional view along line AA.
[0016] 1-Cut tool, 2-Cut tool barrel, 3-Gate valve, 4-Pressure gauge, 5-Water inlet ball valve, 6-Rubber seal, 7-Cut tool body, 8-Connecting cylinder, 9-First valve stem, 10-Second valve stem, 11-Valve body, 12-First V-groove, 13-Second V-groove. Detailed Implementation
[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0018] Please see Figures 1 to 3 ,in, Figure 1 This is a cross-sectional view of the entire utility model. Figure 2 This is an unfolded sectional view of the present invention. Figure 3 This is the utility model Figure 2 A sectional view along line AA.
[0019] This utility model provides a double gate valve 3 structure for a cutter barrel 2, including two gate valves 3, a cutter 1 and a cutter barrel 2; The two gate valves 3 each include a rubber seal 6, a valve stem, a first valve body 11, and a second valve body 11. The first valve body 11 has a first V-groove 12, and the second valve body 11 has a second V-groove 13. The two gate valves 3 are respectively disposed on the knife cylinder 2. The knife 1 is disposed inside the knife cylinder 2, and the knife 1 is slidably adapted to the knife cylinder 2. The first valve body 11 and the second valve body 11 are respectively fixedly connected to the valve stem. The first V-groove 12 is adapted to the second V-groove 13. The rubber seal 6 is disposed between the first V-groove 12 and the second V-groove.
[0020] In this embodiment, when changing tools using a tool changer, the tool 1 retracts to the rear end of the gate valve 3. The gate valve 3 is closed via a dedicated transmission device. The left and right gate valves 3 feature a V-shaped design, and rubber seals are installed on the first V-groove 12 and the second V-groove 13 on one side of the gate valve 3. The V-shaped design automatically adjusts its position, ensuring that the sealing surfaces on both sides of the V-groove are simultaneously and evenly pressurized, forming an effective seal. The design of two gate valves 3 means that two independent gates simultaneously contact the valve seat. This design helps to achieve a more uniform sealing pressure distribution, thereby reducing the risk of leakage. In applications with high pressure differentials, high temperatures, or corrosive media, the sealing performance of the double gate valve 3 is particularly outstanding.
[0021] Furthermore, the double gate valve 3 structure of the cutter barrel 2 also includes a pressure gauge 4, which is disposed on the outer wall of the cutter barrel 2 and located at the upper end of the cutter barrel 2. The double gate valve 3 structure of the cutter barrel 2 also includes a water inlet ball valve 5, which is disposed on the outer wall of the cutter barrel 2 and located at the lower end of the cutter barrel 2. The cutter 1 includes a cutter body 7 and a connecting cylinder 8, which is detachably connected to the cutter body 7. The pressure gauge 4 and the water inlet ball valve 5 are respectively located between the two gate valves 3.
[0022] In this embodiment, a water inlet ball valve 5 and a pressure gauge 4 are also designed between the gate valves 3. When the double gates are closed, clean water can be injected into the middle of the double gates to maintain pressure, and then the pressure gauge 4 can be observed to ensure that there is no leakage at the front end of the gate valve 3 before continuing the blade replacement operation, thereby ensuring the safety of the construction operation. Due to the gap between the two gates, when the medium contains solid particles or impurities, these particles are more easily flushed out, thereby reducing wear and blockage on the sealing surface, improving the valve's self-cleaning ability, and extending its service life.
[0023] The opening and closing process of the double gate valve 3 is smooth, reducing vibration and noise caused by media impact, and also reducing the impact load on the pipeline system. This allows the valve to maintain stable performance even under high-frequency operation or harsh conditions.
[0024] The double gate valve 3 can adapt to a variety of media and operating conditions, including high-pressure, high-temperature, corrosive media, and media containing solid particles. Its flexible structural design can be customized to meet the needs of different industries and application scenarios.
[0025] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A knife-tube double-gate valve structure, characterized in that, Includes two gate valves, a cutting tool, and a tool holder; The two gate valves each include a rubber seal, a valve stem, a first valve body, and a second valve body. The first valve body has a first V-groove, and the second valve body has a second V-groove. The two gate valves are respectively disposed on the knife cylinder. The knife is disposed inside the knife cylinder and is slidably adapted to the knife cylinder. The first valve body and the second valve body are respectively fixedly connected to the valve stem. The first V-groove and the second V-groove are adapted to each other. The rubber seal is disposed between the first V-groove and the second V-groove.
2. The knife-tube double-gate valve structure as described in claim 1, characterized in that, The double gate valve structure of the cutter barrel also includes a pressure gauge, which is disposed on the outer wall of the cutter barrel and located at the upper end of the cutter barrel.
3. The knife-tube double-gate valve structure as described in claim 2, characterized in that, The double gate valve structure of the cutter barrel also includes a water inlet ball valve, which is disposed on the outer wall of the cutter barrel and located at the lower end of the cutter barrel.
4. The knife-tube double gate valve structure as described in claim 3, characterized in that, The cutting tool includes a cutting tool body and a connecting cylinder, and the connecting cylinder is detachably connected to the cutting tool body.
5. The knife-tube double-gate valve structure as described in claim 4, characterized in that, The pressure gauge and the water inlet ball valve are respectively located between the two gate valves.