A three-piece butterfly valve for liquid line control

Abstract

The utility model relates to liquid pipeline control technical field, concretely is a kind of three-piece butterfly valve for liquid pipeline control, including the valve body consisting of two inner valve body and two outer valve body, butterfly plate and hand lever are equipped between two inner valve bodies. Through quick-release assembly connection between valve body, the assembly includes axially arranged connecting rod, and the circumferential of valve body is provided with the clamping groove matched with connecting rod. One end of connecting rod is matched with nut through thread, and the other end is rotatably connected with fixed part through pivot, to realize quick disassembly and assembly. Safety assembly is also provided on inner valve body and outer valve body, including the sliding sheet that can slide in T-shaped arc sliding slot, and the sliding sheet contact surface is provided with polytetrafluoroethylene wear-resistant layer to form damping sliding, for circumferential limit connecting rod. The radial dimension of outer valve body is greater than inner valve body, and quick-release assembly is staggered distribution to form avoidance space. The utility model solves the problem that traditional butterfly valve disassembly is complicated and easy to leak, has the advantages of quick disassembly and assembly, stable connection, safety and reliability, and is suitable for efficient fluid control demand.

Description

Technical Field

[0001] This utility model relates to the field of liquid pipeline control technology, specifically a three-piece butterfly valve for liquid pipeline control. Background Technology

[0002] In liquid piping systems, fluid control is crucial, and butterfly valves, as commonly used control elements, are widely applied in various scenarios. Among them, the three-piece butterfly valve, with its unique structure, exhibits certain advantages in installation, maintenance, and sealing performance, attracting industry attention.

[0003] However, traditional three-piece butterfly valves have many shortcomings in practical use. During installation, the complex connection methods between the valve body components require multiple bolts to be precisely passed through their corresponding holes and tightened sequentially. This not only demands a high level of skill from the operator but is also time-consuming and labor-intensive. If a bolt is not tightened properly or its installation position is incorrect, it can lead to poor sealing and liquid leakage. Disassembly and maintenance also present numerous difficulties; removing a large number of bolts is not only tedious but also increases the risk of losing small parts. Therefore, traditional three-piece butterfly valves lack an effective quick-assembly and disassembly design, making it difficult to meet the modern industrial demands for efficient, safe, and convenient fluid control. Therefore, a new three-piece butterfly valve for liquid pipeline control is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a three-piece butterfly valve for liquid pipeline control, which has the advantages of quick assembly and disassembly and easy maintenance. It solves the problems of traditional three-piece butterfly valves, such as time-consuming and laborious installation and disassembly due to complex connection methods, easy leakage due to poor sealing, and easy loss of small parts, making it difficult to meet the needs of modern industry for efficient, safe and convenient fluid control.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned goals of rapid disassembly and assembly and convenient maintenance, this utility model provides the following technical solution:

[0008] A three-piece butterfly valve for liquid pipeline control, comprising:

[0009] The valve body is composed of two inner valve bodies and an outer valve body; the two inner valve bodies are arranged adjacent to each other, and the two outer valve bodies are arranged on opposite sides of the two inner valve bodies; the other end of the outer valve body is provided with a pipe connection structure.

[0010] A butterfly plate is located inside the space between two inner valve bodies, and a hand crank is fixedly connected to the butterfly plate between the two inner valve bodies;

[0011] Multiple quick-release components are connected to valve bodies of the same type. Each quick-release component includes an axially arranged connecting rod. The inner valve body and the outer valve body are provided with slots around their peripheries that cooperate with the connecting rod.

[0012] The inner and outer valve bodies are also slidably equipped with a safety component that can circumferentially limit the connecting rod.

[0013] As a preferred technical solution of this utility model, a single quick-release component further includes: a nut and a fixing part; one end of the connecting rod is provided with a thread that mates with the nut, and the other end is provided with a mounting part, wherein the mounting part is rotatably connected to the fixing part by a rotating shaft.

[0014] As a preferred embodiment of this utility model, the fixing part and the nut are located on opposite sides of the same type of valve body, and the nut abuts against one end of the slot, and the fixing part is fixedly installed on the valve body.

[0015] As a preferred technical solution of this utility model, the valve body at the slot is provided with an arc-shaped slide groove with a T-shaped cross section, the safety component cooperates with the slide groove and includes an arc-shaped slide plate, and a cylinder is provided on one side of the slide plate.

[0016] As a preferred technical solution of this utility model, the contact surface between the sliding plate and the sliding groove is provided with a polytetrafluoroethylene wear-resistant layer to form damped sliding.

[0017] As a preferred embodiment of this utility model, the radial dimension of the outer valve body is larger than that of the inner valve body, and the quick-release components on the outer valve body and the quick-release components on the inner valve body are staggered, so that the quick-release components of the outer valve body form a clearance space on the radially outer side of the quick-release components of the inner valve body.

[0018] As a preferred technical solution of this utility model, a rod sleeve is provided on the hand crank, and one end of the rod sleeve is limited and locked onto the two inner valve bodies.

[0019] (III) Beneficial Effects

[0020] Compared with the prior art, this utility model provides a three-piece butterfly valve for liquid pipeline control, which has the following advantages:

[0021] This three-piece butterfly valve for liquid pipeline control features a quick-release assembly. It utilizes a connecting rod and a slot, along with a nut and a rotating shaft connecting the connecting rod and the fixing part, to achieve rapid assembly and disassembly. Specifically, the connecting rod can be quickly rotated via the shaft by loosening the nut. This avoids the time-consuming, labor-intensive, and parts-loss problems associated with traditional bolt connections, greatly improving installation and maintenance efficiency and meeting the high-efficiency and convenient fluid control needs of modern industry.

[0022] This three-piece butterfly valve for liquid pipeline control uses safety components on the inner and outer valve bodies. The sliding plate in the T-shaped arc groove limits the circumferential movement of the connecting rod. The contact surface of the sliding plate is provided with a polytetrafluoroethylene wear-resistant layer to form damping sliding, which enhances the connection stability, prevents the connecting rod from shifting, and ensures the safe and reliable operation of the valve body. Attached Figure Description

[0023] Figure 1 This is a perspective view of the overall appearance of this utility model;

[0024] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0025] Figure 3 This is a side view of the present invention.

[0026] Figure 4 This is a schematic diagram of the safety component in this utility model.

[0027] In the diagram: 1. Valve body; 101. Inner valve body; 102. Outer valve body; 2. Butterfly plate; 3. Hand crank; 4. Quick release assembly; 401. Connecting rod; 402. Thread; 403. Mounting part; 404. Fixing part; 405. Nut; 5. Safety component; 501. Sliding plate; 502. Cylindrical part; 6. Slot; 7. Slide groove; 8. Rod sleeve. Detailed Implementation

[0028] 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.

[0029] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0030] 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 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.

[0031] Please see Figure 1-4 A three-piece butterfly valve for liquid pipeline control includes: a valve body 1, comprising two inner valve bodies 101 and an outer valve body 102; the two inner valve bodies 101 are arranged adjacent to each other, and a sealing ring is provided between the two inner valve bodies 101; two outer valve bodies 102 are arranged on opposite sides of the two inner valve bodies 101, and a sealing ring is also provided between the outer valve bodies 102 and the inner valve bodies 101 to further improve the sealing performance; the other end of the outer valve body 102 is provided with a pipe connection structure, which is a flange with a mounting hole; and a valve body is provided between the two inner valve bodies 101. Inside the chamber is a butterfly plate 2, which is fixedly connected to a hand crank 3 located between two inner valve bodies 101. By rotating the hand crank 3, the butterfly plate 2 can be quickly reversed to control the water flow. Multiple quick-release components 4 are connected to the valve bodies 1 of the same type. Each quick-release component 4 includes an axially arranged connecting rod 401. The inner valve body 101 and the outer valve body 102 are both provided with slots 6 that cooperate with the connecting rod 401. Safety components 5 that can circumferentially limit the connecting rod 401 are also slidably arranged on the inner valve body 101 and the outer valve body 102.

[0032] In this embodiment, a single quick-release assembly 4 further includes a nut 405 and a fixing part 404; one end of the connecting rod 401 is provided with a thread 402 that mates with the nut 405, and the other end is provided with a mounting part 403, which is rotatably connected to the fixing part 404 via a rotating shaft; this design allows one end of the connecting rod 401 to be tightly engaged with the nut 405 via the thread 402, while the other end can rotate flexibly via the rotating shaft and the fixing part 404. When installing and removing the valve body, only the nut 405 needs to be slightly loosened to rotate the screw via the rotating shaft, achieving quick removal of the valve body 1. Compared to the traditional threaded fixing method, the thread loosening time is shorter.

[0033] In this embodiment, the fixing part 404 and the nut 405 are located on opposite sides of the same type of valve body 1, and the nut 405 abuts against one end of the slot 6, while the fixing part 404 is fixedly installed on the valve body 1. Positioning the fixing part 404 and the nut 405 on opposite sides of the same type of valve body 1 allows the quick-release assembly 4 to generate a balanced tension force on the valve body in the axial direction, ensuring a tight connection between the various components of the valve body 1. The nut 405 abuts against one end of the slot 6, accurately fixing the connecting rod 401 within the slot 6 and preventing the connecting rod 401 from shifting in the axial direction. The fixing part 404, fixedly installed on the valve body 1, provides stable support for the entire quick-release assembly 4, ensuring reliable operation of the quick-release assembly 4.

[0034] In this embodiment, the valve body 1 at the slot 6 has a T-shaped arc-shaped groove 7. The safety component 5 cooperates with the groove 7 and includes an arc-shaped slide plate 501. A cylinder 502 is provided on one side of the slide plate 501. The T-shaped arc-shaped groove 7 provides a stable sliding track for the slide plate 501. The arc-shaped groove 7 and the slide plate 501 cooperate with each other, allowing the slide plate 501 to slide more smoothly in the groove 7. The cylinder 502 on one side of the slide plate 501 facilitates the operator to slide the slide plate 501, such as pushing or pulling the slide plate 501 to achieve circumferential limiting of the connecting rod 401.

[0035] In this embodiment, the contact surface between the slider 501 and the groove 7 is provided with a polytetrafluoroethylene (PTFE) wear-resistant layer to form damped sliding. PTFE has excellent wear resistance and self-lubricating properties. Providing a PTFE wear-resistant layer on the contact surface between the slider 501 and the groove 7 can effectively reduce friction and wear between the slider 501 and the groove 7, extending the service life of both. Simultaneously, the damped sliding design provides the slider 501 with a certain resistance during sliding, preventing it from easily moving due to slight vibrations or external forces. This ensures the stability of the safety component 5's circumferential limiting of the connecting rod 401, preventing accidental displacement of the connecting rod 401 during use.

[0036] In this embodiment, the radial dimension of the outer valve body 102 is larger than that of the inner valve body 101, and the quick-release components 4 on the outer valve body 102 and the quick-release components 4 on the inner valve body 101 are staggered, creating a clearance space for the quick-release components 4 on the outer valve body 102 on the radially outer side of the quick-release components 4 on the inner valve body 101. The larger radial dimension of the outer valve body 102 provides sufficient space for the installation of the quick-release components 4. The staggered design of the quick-release components 4 ensures that the quick-release components 4 on the outer valve body 102 and the inner valve body 101 do not interfere with each other during installation and disassembly, avoiding operational difficulties caused by limited space. The quick-release assembly 4 of the outer valve body 102 forms a clearance space on the radial outer side of the quick-release assembly 4 of the inner valve body 101, which further facilitates the operator to operate the quick-release assembly 4 and improves the efficiency of installation and maintenance. By loosening the quick-release assembly 4 connecting the two inner valve bodies 101, the two inner valve bodies 101 can be directly separated and the butterfly plate 2 can be taken out, which is convenient for the operator to assemble or repair.

[0037] In this embodiment, a sleeve 8 is fitted onto the hand crank 3, with one end of the sleeve 8 engaging with the two inner valve bodies 101. The sleeve 8 protects the hand crank 3 from impacts and wear during use, extending its service life. The engagement of one end of the sleeve 8 with the two inner valve bodies 101 further ensures the fixed position of the inner valve bodies 101, preventing them from shaking or falling off during use. This ensures the hand crank 3 can rotate stably, accurately controlling the butterfly plate 2 and guaranteeing the precision and reliability of the valve body 1's fluid control over the liquid pipeline.

[0038] In summary, this three-piece butterfly valve for liquid pipeline control, through the installation of a quick-release assembly 4, utilizes the cooperation between the connecting rod 401 and the slot 6, along with the nut 405 and the connection between the connecting rod 401 and the fixing part 404 via the rotation of the shaft, to achieve quick assembly and disassembly. Specifically, by loosening the nut 405, the connecting rod 401 can be quickly rotated via the shaft, avoiding the time-consuming, labor-intensive, and parts-loss problems of traditional bolt connections, greatly improving installation and maintenance efficiency, and meeting the needs of modern industry for efficient and convenient fluid control.

[0039] This three-piece butterfly valve for liquid pipeline control uses safety components 5 on the inner and outer valve bodies 102. The sliding plate 501 slides in the T-shaped arc groove 7 to limit the circumferential movement of the connecting rod 401. The contact surface of the sliding plate 501 is provided with a polytetrafluoroethylene wear-resistant layer to form damping sliding, which enhances the connection stability, prevents the connecting rod 401 from shifting, and ensures the safe and reliable operation of the valve body 1.

[0040] Quick-release and quick-installation principle: During installation, the connecting rod 401 is rotated around the shaft and inserted into the groove 6 around the inner and outer valve bodies 102. The nut 405 is rotated to even out the tension, achieving a tight connection between the valve bodies 1. During disassembly, the nut 405 is loosened, and the connecting rod 401 rotates around the shaft for quick assembly and disassembly. For safety, the T-shaped arc-shaped slide groove 7 at the groove 6 cooperates with the sliding plate 501 of the safety component 5. By manually moving the cylinder 502, the sliding plate 501 slides, and its contact surface provides damped sliding to stably limit the connecting rod 401, preventing displacement and ensuring reliable operation of the valve body 1.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-piece butterfly valve for liquid pipeline control, characterized in that, include: The valve body is composed of two inner valve bodies and an outer valve body; the two inner valve bodies are arranged adjacent to each other, and the two outer valve bodies are arranged on opposite sides of the two inner valve bodies; the other end of the outer valve body is provided with a pipe connection structure. A butterfly plate is located inside the space between two inner valve bodies, and a hand crank is fixedly connected to the butterfly plate between the two inner valve bodies; Multiple quick-release components are connected to valve bodies of the same type. Each quick-release component includes an axially arranged connecting rod. The inner valve body and the outer valve body are provided with slots around their peripheries that cooperate with the connecting rod. The inner and outer valve bodies are also slidably equipped with a safety component that can circumferentially limit the connecting rod.

2. A three-piece butterfly valve for liquid pipeline control according to claim 1, characterized in that: Each quick-release assembly further includes: a nut and a fixing part; one end of the connecting rod is provided with a thread that mates with the nut, and the other end is provided with a mounting part, which is rotatably connected to the fixing part by a rotating shaft.

3. A three-piece butterfly valve for liquid pipeline control according to claim 2, characterized in that: The fixing part and the nut are located on opposite sides of the same type of valve body, and the nut abuts against one end of the slot, and the fixing part is fixedly installed on the valve body.

4. A three-piece butterfly valve for liquid pipeline control according to claim 1, characterized in that: The valve body at the slot has an arc-shaped groove with a T-shaped cross section. The safety component cooperates with the groove and includes an arc-shaped slide plate. A cylinder is provided on one side of the slide plate.

5. A three-piece butterfly valve for liquid pipeline control according to claim 4, characterized in that: The contact surface between the slide and the groove is provided with a polytetrafluoroethylene wear-resistant layer to form damped sliding.

6. A three-piece butterfly valve for liquid pipeline control according to claim 1, characterized in that: The radial dimension of the outer valve body is larger than that of the inner valve body, and the quick-release components on the outer valve body and the quick-release components on the inner valve body are staggered, so that the quick-release components of the outer valve body form a clearance space on the radially outer side of the quick-release components of the inner valve body.

7. A three-piece butterfly valve for liquid pipeline control according to claim 1, characterized in that: The hand crank is fitted with a sleeve, one end of which is limited and snapped onto the two inner valve bodies.

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