A new type of ball valve sleeve ball

Abstract

The utility model relates to a novel ball valve sleeve ball, including sleeve ball body, the sleeve ball body middle part is passed through and has the water passage, is established in the hollow inner chamber in the sleeve ball body, is established in the valve rod fixed socket of sleeve ball body top, the valve rod fixed socket penetrates into the hollow inner chamber, is established in the drainage outlet of sleeve ball body bottom and is linked with the hollow chamber, the sleeve ball body includes the outer sleeve and the inner sleeve, the inner sleeve is nested in the outer sleeve inside and is fixed through welding, the hollow inner chamber is located between the outer sleeve and the inner sleeve, and the valve rod fixed socket and the drainage outlet are established on the outer sleeve, set up the hollow inner chamber in the sleeve ball body inside, the overall weight of the ball body is reduced significantly, the material consumption and the drive torque are reduced, and the lightweight design of ball valve is realized beneficially, the drainage outlet set up at the bottom can discharge the infiltrated moisture in time, avoids the moisture accumulation in the hollow inner chamber and leads to the weight increase, the corrosion aggravation or the low temperature ice expansion damage ball body, effectively promotes the reliability and the service life of ball valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a novel ball valve sleeve. Background Technology

[0002] Ball valves, widely used in fluid pipeline systems, offer advantages such as rapid opening and closing, excellent sealing performance, and low fluid resistance, making them widely applicable in fields such as petroleum, chemical, power, and water treatment. One of their core components is the ball, typically housed within the valve body, which rotates around an axis perpendicular to the flow path to open and close the fluid passage.

[0003] Traditional ball valve bodies are mostly made of solid material to ensure sufficient structural strength and sealing performance. However, with the increasing demands for lightweight and energy-saving industrial equipment, the problems associated with solid balls, such as heavy weight, high material consumption, high driving torque, and inconvenient installation and maintenance, are becoming increasingly prominent. Therefore, it is necessary to design a ball valve body that is lightweight and relatively easy to manufacture. Utility Model Content

[0004] This invention proposes a new type of ball valve sleeve that is lightweight and relatively simple to process, solving the aforementioned problems existing in the use of existing technologies.

[0005] The technical solution of this utility model is implemented as follows: a novel ball valve sleeve includes a sleeve body, a water passage is opened through the middle of the sleeve body, a hollow inner cavity is opened inside the sleeve body, and a valve stem fixing socket is opened at the top of the sleeve body.

[0006] Preferably, the valve stem fixing socket penetrates into the hollow inner cavity, and the bottom of the ball body is provided with a drain port that communicates with the hollow cavity.

[0007] Preferably, the ball body includes an outer sleeve and an inner sleeve, the inner sleeve is nested inside the outer sleeve, the hollow inner cavity is located between the outer sleeve and the inner sleeve, and the valve stem fixing port and drain port are provided on the outer sleeve.

[0008] Preferably, the outer sleeve and the inner sleeve are formed by extruding two steel pipes together, and the two ends of the outer sleeve and the inner sleeve are fixed and sealed by welding to form a closed hollow cavity.

[0009] Preferably, the valve stem fixing socket is rectangular and has chamfered corners on all four corners, and the drain outlet is round.

[0010] Preferably, the two ends of the inner sleeve are respectively fitted to the two sides of the inner wall of the outer sleeve, and the two ends of the inner sleeve are covered by the inner wall of the outer sleeve.

[0011] In summary, the beneficial effects of this utility model are as follows: 1. By incorporating a hollow inner cavity within the ball valve body, the overall weight of the ball is significantly reduced, decreasing material consumption and driving torque, thus facilitating a lightweight ball valve design. The valve stem fixing socket at the top connects to the valve stem for torque transmission, resulting in a simple and reliable structure. Since the valve stem fixing socket penetrates into the hollow inner cavity, the drain outlet at the bottom connects to the hollow inner cavity, allowing for timely drainage of any seeping moisture. This prevents moisture accumulation in the hollow inner cavity, which could lead to increased weight, accelerated corrosion, or damage to the ball valve due to low-temperature freezing and expansion, effectively improving the reliability and service life of the ball valve.

[0012] 2. The hollow inner cavity structure is formed by nesting an outer sleeve and an inner sleeve, which facilitates the realization of complex hollow structures through separate processing and molding processes, thus improving manufacturing feasibility. The valve stem fixing port and drain port are both set on the outer sleeve, which facilitates centralized processing and positioning, while keeping the inner sleeve structurally intact, which helps to improve overall strength and sealing stability.

[0013] 3. By extruding two stainless steel pipes together, a tightly fitting hollow structure can be efficiently formed, ensuring the uniformity and structural consistency of the hollow cavity; both ends are welded and sealed to ensure the airtightness of the hollow cavity.

[0014] 4. The rectangular hole-shaped valve stem fixing socket can achieve a reliable anti-rotation connection with square or flat valve stems, and the torque transmission is more stable; the chamfered structure at the four corners of the rectangular hole can effectively relieve stress concentration, prevent cracks under alternating loads, and improve structural durability; the drain outlet adopts a round hole shape, which is easy to process and has good fluid discharge performance, which is conducive to the rapid drainage of accumulated water. Attached Figure Description

[0015] 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A structural diagram from another angle; Figure 3 This is a top view of the present invention; Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure.

[0017] In the diagram: 1. Ball body; 2. Water passage; 3. Hollow inner cavity; 4. Valve stem fixing socket; 5. Drain outlet; 6. Outer sleeve; 7. Inner sleeve; 8. Chamfered structure. Detailed Implementation

[0018] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example: like Figures 1 to 4 As shown, this utility model discloses a novel ball valve sleeve, whose structural design and manufacturing process are closely integrated, aiming to achieve the goals of lightweight, water-proof, high strength, and mass production capability. It includes a sleeve body 1, which is generally spherical with a water passage 2 running through its center to allow fluid to pass through when the valve is open. Inside the sleeve body 1 is a hollow inner cavity 3, which is not connected to the water passage 2 and serves only as a weight-reduction structure, significantly reducing the ball's weight, decreasing the load on the drive device, and improving the valve's operational sensitivity and energy efficiency. The top of the sleeve body 1 has a valve stem fixing socket 4 for connecting with the lower end of the valve stem to achieve torque transmission and control the rotation of the ball to open and close the flow channel.

[0020] The valve stem fixing port 4 directly penetrates into the hollow inner cavity 3, and the valve stem fixing port 4 and the hollow inner cavity 3 are not separated by other structures, which simplifies the process. However, for this reason, a drain port 5 connected to the hollow cavity needs to be opened at the bottom of the ball body 1. When the valve is closed or under maintenance, if water seeps into the hollow inner cavity 3 from the top valve stem fixing port 4, it can be naturally discharged through the bottom drain port 5 under the action of gravity. This avoids water accumulation inside the ball, which would increase weight, aggravate corrosion, or cause the ball to crack due to freezing expansion in low temperature environments. This effectively improves the long-term operational reliability of the valve.

[0021] The ball body 1 consists of two parts: an outer sleeve 6 and an inner sleeve 7. Both the outer sleeve 6 and the inner sleeve 7 are made of seamless stainless steel pipe, preferably 304 or 316L, which has good corrosion resistance and mechanical strength. The inner sleeve 7 is nested inside the outer sleeve 6, and the hollow inner cavity 3 is located between the outer sleeve 6 and the inner sleeve 7. The structure of the hollow inner cavity 3 formed by the nesting of the outer sleeve 6 and the inner sleeve 7 makes it easy to realize complex hollow structures through separate processing and molding processes, thus improving manufacturing feasibility. The valve stem fixing socket 4 and the drain port 5 are both provided on the outer sleeve 6.

[0022] Furthermore, the outer sleeve 6 and the inner sleeve 7 are formed by extruding two steel pipes together. By extruding two stainless steel pipes together, a tightly fitting hollow structure can be formed efficiently, ensuring the uniformity and structural consistency of the hollow inner cavity 3. The two ends of the outer sleeve 6 and the inner sleeve 7 are fixed and sealed by welding to form a closed hollow inner cavity 3, ensuring the airtightness of the hollow inner cavity 3. At the same time, the welding process is mature and the connection is firm, making it suitable for mass production.

[0023] In this utility model, the valve stem fixing socket 4 is rectangular, which can reliably prevent rotation when connected to a square or flat valve stem, and transmit torque more stably. The rectangular valve stem fixing socket 4 has chamfered structures 8 at all four corners, which can effectively relieve stress concentration. The drain port 5 is round, which is easy to process and has good fluid discharge performance, which is conducive to the rapid discharge of accumulated water.

[0024] In this invention, the two ends of the inner sleeve 7 are respectively fitted to the two sides of the inner wall of the outer sleeve 6, and the two ends of the inner sleeve 7 are covered by the inner wall of the outer sleeve 6. During welding, the butt or lap weld can be fully covered, improving the welding sealing performance and structural strength. At the same time, this structure can effectively prevent the inner sleeve 7 from shifting during extrusion or use, enhancing the stability and reliability of the overall structure and avoiding leakage of the hollow cavity due to welding defects. In addition, the weld is inside the water passage 2, which can keep the surface of the ball body 1 smooth, so that the ball body 1 maintains excellent sealing performance when it is in contact with the valve seat.

[0025] In manufacturing this invention, two stainless steel tubes are selected: an outer tube (6) and an inner tube (7). The diameter of the outer tube 6 is slightly larger than that of the inner tube 7. The tubes are cut to the correct dimensions, and the outer tube 6 has an open end. A valve stem fixing port 4 and a drain port 5 are punched into the outer tube 6. After heating the assembled tubes, they are transferred to a special extrusion mold. Pressure is applied by a high-tonnage hydraulic press, causing the outer tube 6 to undergo plastic deformation under the mold's action, uniformly wrapping around the outer tube of the inner tube 7 and forming an arc-shaped outer surface that matches the shape of the sphere. During this process, a ring-shaped hollow cavity 3 is naturally formed between the outer tube 6 and the inner tube 7. This cavity is continuously distributed along the circumference of the sphere and has a uniform thickness to ensure structural strength.

[0026] After extrusion molding, the two ends of the assembly are precisely cut to form flat end faces, ensuring that the two ends of the inner sleeve 7 fit tightly against the inner walls of the outer sleeve 6, and that the ends of the inner sleeve 7 are completely covered by the outer sleeve 6, forming a sealing structure. This structure facilitates subsequent welding and sealing, preventing incomplete welds or porosity during welding. Subsequently, TIG welding or laser welding is used to perform circumferential welding on both ends. During welding, high-purity argon gas is introduced as a protective gas to ensure that the weld penetration is moderate, the shape is aesthetically pleasing, and there are no cracks or porosity. After welding, the weld area is subjected to X-ray flaw detection or helium mass spectrometry leak detection to ensure that the hollow inner cavity 3 is completely sealed and there is no risk of leakage.

[0027] After welding, machining is performed. First, the outer diameter of the sphere is precision machined using a CNC lathe to ensure an outer diameter accuracy of ±0.05mm and a roundness error controlled within 0.01mm, meeting the sealing requirements with the valve seat. Then, the inner hole, i.e., the inner wall of the water passage 2, is machined to ensure a smooth flow path and reduce flow resistance. The valve stem fixing socket 4 at the top is precision machined using milling; to avoid stress concentration, the four corners of the rectangular hole are chamfered. The drain outlet 5 at the bottom is precision machined using drilling, positioned directly opposite the lowest point of the sphere to ensure thorough drainage. To improve drainage efficiency, the drain outlet 5 can be designed as a tapered flared structure with a smaller inner diameter and a larger outer diameter.

[0028] After processing, surface treatment is performed. First, sandblasting is used to roughen the surface of the sphere, followed by mechanical polishing, ultimately achieving a mirror-like finish on the outer surface. This not only improves aesthetics but also enhances sealing performance and corrosion resistance. For special applications, chemical or electrochemical polishing can be performed to further improve surface quality.

[0029] Finally, the finished spheres undergo comprehensive testing, including dimensional inspection, water pressure sealing test, and drainage function verification. After passing inspection, the products are packaged.

[0030] This embodiment combines a reasonable structural design with mature stainless steel processing technology to achieve high efficiency, lightweight design, and long-term operational reliability of the ball valve body. It is particularly suitable for fields with high valve performance requirements, such as petroleum, chemical, water treatment, food, and pharmaceutical industries.

[0031] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", 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 limiting the scope of protection of this utility model.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., 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 novel ball valve sleeve, characterized in that: It includes a ball-shaped body, with a water passage through the middle of the ball-shaped body, a hollow inner cavity inside the ball-shaped body, and a valve stem fixing port at the top of the ball-shaped body.

2. The novel ball valve sleeve according to claim 1, characterized in that: The valve stem fixing socket penetrates into the hollow inner cavity, and the bottom of the ball body is provided with a drain port that communicates with the hollow cavity.

3. A novel ball valve sleeve according to claim 2, characterized in that: The ball body includes an outer sleeve and an inner sleeve, the inner sleeve is nested inside the outer sleeve, the hollow inner cavity is located between the outer sleeve and the inner sleeve, and the valve stem fixing port and drain port are provided on the outer sleeve.

4. A novel ball valve sleeve according to claim 3, characterized in that: The outer sleeve and inner sleeve are formed by extruding two steel pipes together, and the two ends of the outer sleeve and inner sleeve are fixed and sealed by welding to form a closed hollow inner cavity.

5. A novel ball valve sleeve according to claim 2 or 3, characterized in that: The valve stem fixing socket is rectangular and has chamfered corners on all four sides, while the drain outlet is round.

6. A novel ball valve sleeve according to claim 4, characterized in that: The two ends of the inner sleeve are respectively fitted to the two sides of the inner wall of the outer sleeve, and the two ends of the inner sleeve are covered by the inner wall of the outer sleeve.

Images