A high efficiency ball valve

Abstract

The utility model belongs to the technical field of ball valve, especially a kind of high-efficiency ball valve;Valve body, inner cavity;Valve seat, set in one side of valve body;Spherical valve core, set in the cavity of valve body;Valve stem, one end is set in the top of one side of spherical valve core, the other end extends to the outer portion of the side wall of valve body;Handle, connected with valve stem;First sealing ring is tightly abutted with spherical valve core by double spherical structure of inner sealing lip and outer sealing lip, and multiple-stage sealing is formed by cooperating supporting part and sealing groove, can effectively block fluid from the gap between lining and valve core leakage;Second sealing ring adopts the cross section design of elliptical symmetry distribution and is embedded in sealing groove, greatly reduces the risk of leakage, adapts to complex working conditions such as high pressure, high flow rate;Lining I, lining II and spherical valve core middle part are all provided with through hole, ensure that fluid flow path is smooth, reduce flow resistance, while improving the service life of ball valve, ensure the efficient flow performance of ball valve.

Description

Technical Field

[0001] This utility model belongs to the field of ball valve technology, and in particular relates to a high-efficiency ball valve. Background Technology

[0002] Ball valves, as commonly used valves, are widely used in industrial fields such as chemical, petroleum, and water treatment. However, existing ball valves still have many shortcomings in practical applications: First, their sealing performance is easily affected. The contact between the valve body and the ball valve core often leads to fluid leakage due to the lack of a sealing ring design or an unreasonable structure. Second, the connection stability between the valve body and the valve seat is insufficient. Some ball valves lack a reliable circumferentially distributed threaded connection structure between the valve body and the valve seat, relying only on simple snap-fit ​​fixing, which is prone to loosening after long-term use. Third, the inner lining function is imperfect. Most ball valve inner liners are not designed with a targeted annular groove structure, resulting in weak elastic deformation capacity. They are prone to sealing failure due to increased wear, and after long-term use, leakage is easily caused by the increased clearance between components, making it difficult to meet the requirements of efficient sealing and stable operation. Utility Model Content

[0003] The purpose of this utility model is to address the aforementioned technical problems by providing a high-efficiency ball valve that achieves both high efficiency and good sealing performance.

[0004] In view of this, the present invention provides a high-efficiency ball valve, comprising:

[0005] The valve body contains a cavity;

[0006] The valve seat is located on one side of the valve body;

[0007] The spherical valve core is located inside the cavity of the valve body;

[0008] The valve stem has one end located at the top of one side of the spherical valve core and the other end extending to the outside of the side wall of the valve body;

[0009] The handle is connected to the valve stem.

[0010] Furthermore, the above technical solution also includes:

[0011] Liner I, located inside the valve body;

[0012] Liner II is installed inside the valve seat.

[0013] The spherical valve core rests between liner I and liner II.

[0014] In the above technical solution, the inner lining II further includes:

[0015] The first annular groove is recessed in an annular shape on the inner wall of the inner lining II and is distributed at intervals along the axial direction of the inner lining II.

[0016] In the above technical solution, the inner lining II further includes:

[0017] The second annular groove is recessed in an annular shape on the outer wall of the inner lining II and is arranged at intervals along the axial direction of the inner lining II.

[0018] Furthermore, the above technical solution also includes:

[0019] Multiple threaded holes are circumferentially formed on the connecting surface where the valve seat and valve body fit together, with one end penetrating one side of the valve seat and the other end extending to the valve body.

[0020] Multiple threaded connectors are installed in threaded holes to connect the valve seat and the valve body.

[0021] Furthermore, the above technical solution also includes:

[0022] Multiple first sealing rings are respectively connected to liner I and ball valve core, and liner II and ball valve core;

[0023] The first sealing ring includes:

[0024] The inner sealing lip is in the shape of a small ball and abuts against the ball valve core;

[0025] The outer sealing lip is a large spherical shape that abuts against the spherical valve core and is connected to the inner sealing lip.

[0026] Sealing groove I is located at the bottom of liner I and the top of liner II;

[0027] The support is located inside the sealing groove I.

[0028] Furthermore, the above technical solution also includes:

[0029] Multiple sealing grooves are provided, both inside the valve stem and on the connecting surface where the valve body and valve seat fit together.

[0030] Multiple second sealing rings are disposed within the sealing groove;

[0031] The second sealing ring includes:

[0032] The elliptical portion has a cross-section consisting of two symmetrically distributed ellipses.

[0033] Connecting part, connecting elliptical part.

[0034] In the above technical solution, furthermore, both inner liner I and inner liner II have through holes in the middle of the spherical valve core.

[0035] The beneficial effects of this utility model are as follows:

[0036] 1. The first sealing ring, through the double spherical structure of the inner and outer sealing lips, tightly abuts against the spherical valve core, and together with the support and sealing groove, forms a multi-stage seal, which can effectively prevent fluid leakage from the gap between the liner and the valve core; the second sealing ring adopts an elliptical symmetrical cross-section design and is embedded in the sealing groove. The multiple sealing structures work together to greatly reduce the risk of leakage and adapt to complex working conditions such as high pressure and high flow rate.

[0037] 2. The valve seat and valve body are fixed by multiple threaded holes and threaded connectors distributed around the circumference. Compared with the traditional connection method, the force is more evenly distributed, which can effectively avoid the problem of loosening after long-term use.

[0038] 3. The first annular groove on the inner wall of liner II and the second annular groove on the outer wall are distributed axially at intervals, which can enhance the elastic deformation capacity of the liner and ensure that it can always maintain a tight fit with the ball valve core as it rotates, reducing wear caused by friction. At the same time, liner I, liner II and the ball valve core are all provided with through holes in the middle, and the through hole size is adapted to ensure smooth fluid flow path, reduce flow resistance, and improve the service life of the liner while ensuring the high efficiency of the ball valve. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0040] Figure 2 This is a cross-sectional view of the present invention;

[0041] Figure 3 This is a partially enlarged view I of the present invention;

[0042] Figure 4 This is a partial enlargement of the present invention. Figure II ;

[0043] The markings in the figure are as follows: valve body 1, valve seat 2, ball valve core 3, valve stem 4, handle 5, inner liner I 6, inner liner II 7, first annular groove 71, second annular groove 72, threaded hole 8, threaded connector 9, first sealing ring 10, inner sealing lip 101, outer sealing lip 102, sealing groove I 103, support part 104, sealing groove 12, second sealing ring 11, elliptical part 111, connecting part 112. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0045] Example 1:

[0046] This embodiment provides a high-efficiency ball valve, including:

[0047] Valve body 1, containing a cavity;

[0048] Valve seat 2 is located on one side of valve body 1;

[0049] The ball valve core 3 is disposed in the cavity of the valve body 1;

[0050] The valve stem 4 has one end set at the top of one side of the ball valve core 3, and the other end extends to the outside of the side wall of the valve body 1;

[0051] Handle 5 is connected to valve stem 4.

[0052] In this embodiment, the valve body 1 is a hollow shell containing a cylindrical cavity; the valve seat 2 is fixed below the valve body 1, fitting against one side of the valve body 1 to form a sealed cavity; the spherical valve core 3 is placed inside the cavity of the valve body 1; one end of the valve stem 4 is vertically fixed to the top of one side of the spherical valve core 3, and the other end penetrates through the side wall of the valve body 1 and extends to the outside; the handle 5 is fixed to the exposed end of the valve stem 4 by bolts. The valve body 1 and valve seat 2 are made of gray cast iron; the spherical valve core 3 is made of nitrided steel; the valve stem 4 is made of 45 steel; the spherical valve core 3 can be quickly opened and closed through a simple transmission structure, making operation labor-saving; the materials of each component are highly adaptable and can meet the basic usage requirements of different working conditions.

[0053] Example 2:

[0054] This embodiment provides a high-efficiency ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] Also includes:

[0056] Liner I6 is installed inside valve body 1;

[0057] Liner II7 is installed inside valve seat 2;

[0058] The spherical valve core rests between liner I6 and liner II7.

[0059] In this embodiment, liner I6 is an annular structure, embedded in the inner wall of the cavity of valve body 1, and fits against the upper outer circumferential surface of the spherical valve core 3; liner II7 is an annular structure, embedded in the inner wall of valve seat 2, and fits against the lower outer circumferential surface of the spherical valve core 3. Liners I6 and II7 are made of polytetrafluoroethylene and are injection molded. The inner walls are precision ground to ensure smoothness. The liners are in direct contact with the spherical valve core 3, avoiding metal-to-metal friction between valve body 1, valve seat 2, and valve core, thus reducing wear; the non-metallic material has self-lubricating properties, reducing opening and closing resistance and extending the service life of the valve core.

[0060] Example 3:

[0061] This embodiment provides a high-efficiency ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0062] Liner II 7 includes:

[0063] The first annular groove 71 is recessed in an annular shape on the inner wall of the inner lining II 7 and is distributed at intervals along the axial direction of the inner lining II 7.

[0064] In this embodiment, the first annular groove 71 can enhance the elastic deformation capability of the inner liner II 7. When the spherical valve core 3 rotates or is impacted by fluid pressure, the inner liner II 7 can adaptively fit the surface of the valve seat 2 through the deformation of the annular groove, reducing the gap and improving the sealing effect.

[0065] Example 4:

[0066] This embodiment provides a high-efficiency ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0067] Liner II 7 includes:

[0068] The second annular groove 72 is recessed in an annular shape on the outer wall of the inner lining II 7 and is arranged at intervals along the axial direction of the inner lining II 7.

[0069] In this embodiment, the second annular groove 72 can buffer the assembly stress between the valve seat 2 and the inner liner II 7. When the valve body 1 is affected by temperature changes or vibration, the second annular groove 72 can compensate for the deformation gap, preventing the inner liner II 7 from being damaged by rigid extrusion and enhancing the structural stability.

[0070] Example 5:

[0071] This embodiment provides a high-efficiency ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] Also includes:

[0073] Multiple threaded holes 8 are circumferentially formed on the connecting surface where the valve seat 2 and the valve body 1 fit together, with one end penetrating one side of the valve seat 2 and the other end extending to the valve body 1.

[0074] Multiple threaded connectors 9 are installed in the threaded holes 8 to connect the valve seat 2 and the valve body 1.

[0075] In this embodiment, eight threaded holes 8 are evenly distributed along the circumference of the mating surfaces of the valve seat 2 and the valve body 1. One end of each hole penetrates one side of the valve seat 2, and the other end extends into the valve body 1. The hole diameter matches the thread specification. The circumferentially distributed threaded holes 8 ensure uniform stress distribution between the valve seat 2 and the valve body 1, avoiding deformation caused by localized stress concentration. The depth design of the threaded holes 8 ensures connection strength and prevents loosening after long-term use. The threaded connector 9 is a hexagonal bolt, which passes through the valve seat 2 and is screwed to the valve body 1. Tightening it ensures a tight fit between the mating surfaces of the valve seat 2 and the valve body 1. The high-strength bolt, combined with the threaded holes 8, enables a detachable connection, facilitating disassembly and assembly during later maintenance.

[0076] Example 6:

[0077] This embodiment provides a high-efficiency ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0078] Also includes:

[0079] Multiple first sealing rings 10 are respectively connected to the inner liner I 6 and the ball valve core 3, and the inner liner II 7 and the ball valve core 3;

[0080] The first sealing ring 10 includes:

[0081] The inner sealing lip 101 is in the shape of a small ball and abuts against the ball valve core 3;

[0082] The outer sealing lip 102 is in the shape of a large ball and abuts against the ball valve core 3, while being connected to the inner sealing lip 101;

[0083] Sealing groove I103 is provided at the bottom of liner I6 and the top of liner II7;

[0084] The support part 104 is disposed in the sealing groove I 103.

[0085] In this embodiment, two first sealing rings 10 are respectively assembled at the contact points between the inner liner I6 and the spherical valve core 3, and the inner liner II7 and the spherical valve core 3. The sealing groove I103 is an annular groove, which is respectively opened on the bottom end face of the inner liner I6 facing the spherical valve core 3 and the top end face of the inner liner II7 facing the spherical valve core 3. The support part is embedded in the sealing groove I103 and fits against the groove wall to fix and prevent displacement. The end of the inner sealing lip 101 abuts against the spherical valve core 3, and the outer sealing lip 102 extends adjacent to the inner sealing lip 102, with its end abutting against the spherical valve core 3 and its root connected to the inner sealing lip 101 to form an integral unit. This structure can form a "nested" double seal through the inner and outer sealing lips 102. The spherical arc design allows the sealing lip to always fit with the valve core as it rotates and elastically fills the gaps in assembly or wear. The design of the support part limiting and connecting to the lip root can also prevent the sealing ring from shifting, increase the overall rigidity, and extend the service life.

[0086] Example 7:

[0087] This embodiment provides a high-efficiency ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0088] Also includes:

[0089] Multiple sealing grooves 12 are provided inside the valve stem 4 and on the connecting surface where the valve body 1 and the valve seat 2 fit together.

[0090] Multiple second sealing rings 11 are disposed within the sealing groove 12;

[0091] The second sealing ring 11 includes:

[0092] Elliptical portion 111, with a cross-section consisting of two symmetrically distributed ellipses;

[0093] Connecting part 112, connecting elliptical part 111.

[0094] In this embodiment, the sealing groove 12 is an annular groove, which is formed inside the valve stem 4 and on the mating surface of the valve body 1 and the valve seat 2; the second sealing ring 11 is embedded in the sealing groove 12, and the elliptical part 111 can fill the gap between the sealing groove 12 and the mating surface through its own deformation, so as to adapt to the sealing requirements under different pressures; the symmetrical design makes the sealing ring evenly stressed, and can maintain stable sealing performance in both dynamic sealing of the valve stem 4 and static sealing of the valve body 1.

[0095] Example 8:

[0096] This embodiment provides a high-efficiency ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features: inner liner I6, inner liner II7, and a through hole in the middle of the ball valve core 3.

[0097] In this embodiment, the axes of the three through holes are collinear, and their inner diameters are the same. The two ends of the through hole of the ball valve core 3 are aligned with the through holes of the inner liner I 6 and the inner liner II 7, forming a continuous fluid channel. The inner walls of the through holes are all polished. The continuous channel design avoids the formation of eddies in the fluid at the component joints, thus improving the flow efficiency of the ball valve.

[0098] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A high efficiency ball valve characterized by, include: Valve body (1), containing a cavity; Valve seat (2) is located on one side of valve body (1); A spherical valve core (3) is disposed in the cavity of the valve body (1); The valve stem (4) has one end set on the top of the ball valve core (3) and the other end extends to the outside of the side wall of the valve body (1); The handle (5) is connected to the valve stem (4).

2. The high-efficiency ball valve according to claim 1, characterized in that, Also includes: Liner I (6) is installed inside the valve body (1); Liner II (7) is installed inside the valve seat (2); The ball valve core (3) rests between the inner liner I (6) and the inner liner II (7).

3. The high-efficiency ball valve according to claim 2, characterized in that, The inner liner II (7) comprises: The first annular groove (71) is recessed in an annular shape on the inner wall of the inner lining II (7) and is distributed at intervals along the axial direction of the inner lining II (7).

4. The high-efficiency ball valve according to claim 2, characterized in that, The inner liner II (7) comprises: The second annular groove (72) is recessed in an annular shape on the outer wall of the inner lining II (7) and is arranged at intervals along the axial direction of the inner lining II (7).

5. The high-efficiency ball valve according to claim 1, characterized in that, Also includes: Multiple threaded holes (8) are circumferentially opened on the connecting surface of the valve seat (2) and the valve body (1), with one end penetrating one side of the valve seat (2) and the other end extending to the valve body (1). Multiple threaded connectors (9) are installed in threaded holes (8) to connect valve seat (2) and valve body (1).

6. The high-efficiency ball valve according to claim 1, characterized in that, Also includes: Multiple first sealing rings (10) are respectively connected to the inner liner I (6) and the ball valve core (3), and the inner liner II (7) and the ball valve core (3); The first sealing ring (10) includes: The inner sealing lip (101) is in the shape of a small ball and abuts against the ball valve core (3); The outer sealing lip (102) is in the shape of a large ball and abuts against the ball valve core (3), while being connected to the inner sealing lip (101); Sealing groove I (103) is set at the bottom of liner I (6) and the top of liner II (7); The support part (104) is disposed in the sealing groove I (103).

7. The high-efficiency ball valve according to claim 1, characterized in that, Also includes: Multiple sealing grooves (12) are provided in the valve stem (4) and on the connecting surface where the valve body (1) and valve seat (2) fit together; Multiple second sealing rings (11) are disposed within the sealing groove (12); The second sealing ring (11) includes: The elliptical part (111) has a cross-section consisting of two symmetrically distributed ellipses. Connecting part (112), connecting elliptical part (111).

8. A high-efficiency ball valve according to claim 4, characterized in that, The inner lining I (6), inner lining II (7), and spherical valve core (3) are all provided with through holes in the middle.

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