Floating ball valve

Abstract

The utility model relates to the technical field of oil refining and chemical engineering valves, in particular to a floating ball valve which comprises a valve body, a valve cover, a ball body, a valve rod, two valve seats and two clamping rings, the valve body is connected with the valve cover, and a containing cavity is formed between the valve body and the valve cover. The valve body and the valve deck are each provided with a flow channel communicating with the containing cavity. The ball body is movably arranged in the containing cavity, a through hole is formed in the ball body, and the bottom end of the valve rod penetrates through the valve body to be connected with the ball body and is configured to drive the ball body to rotate in the containing cavity. The two valve seats are arranged on the valve body and the valve cover correspondingly, the valve seats are suitable for abutting against the surface of the ball body, the two clamping rings are arranged on the valve body and the valve cover correspondingly, and the clamping rings are arranged on the outer sides of the valve seats and abut against the valve seats. According to the utility model, the two clamping rings are respectively arranged on the valve body and the valve cover, are arranged on the outer side of the valve seat and are propped against the valve seat, so that the valve seat can be propped against and limited through the clamping rings, and the valve seat is prevented from being extruded out of the valve seat groove.

Description

Technical Field

[0001] This utility model relates to the field of valve technology in oil refining and chemical industry, specifically to a floating ball valve. Background Technology

[0002] In the ball valve manufacturing industry, many parts require degreasing and oil removal to meet stringent customer requirements and ensure surface cleanliness. This process is crucial for guaranteeing valve performance under special operating conditions. However, traditional degreasing and oil removal valves simply perform the degreasing and oil removal operation on conventionally designed parts without altering the conventional valve structure.

[0003] In a conventional floating ball valve structure, degreasing and oiling the parts reveals a series of serious problems. For example, degreasing and oiling increases the friction between the ball seats. Under high-pressure media, if the valve is opened or closed rapidly, the valve seat may be squeezed out of the seat groove, ultimately leading to valve leakage and severely affecting the valve's sealing performance and operational safety.

[0004] In summary, existing conventional floating ball valves, after degreasing and oil removal, fail to meet the requirements for ease of assembly and sealing performance. Therefore, there is an urgent need for a floating ball valve specifically designed for degreasing and oil removal to solve the current problems and improve valve performance under special operating conditions. Utility Model Content

[0005] In view of this, the present invention provides a floating ball valve to solve the problem that conventional floating ball valves, after degreasing and deoiling treatment, are difficult to meet the requirements of ease of assembly and sealing performance.

[0006] In a first aspect, this utility model provides a floating ball valve, comprising:

[0007] The valve body and the valve cover are connected, and a placement cavity is formed between the valve body and the valve cover; both the valve body and the valve cover are provided with flow channels communicating with the placement cavity;

[0008] A sphere is movably disposed within the placement cavity, and the sphere is provided with a through hole;

[0009] The valve stem, with its bottom end passing through the valve body and connected to the ball, is configured to drive the ball to rotate within the placement cavity;

[0010] Two valve seats are respectively disposed on the valve body and the valve cover, and both valve seats are adapted to abut against the surface of the ball;

[0011] Two retaining rings are respectively disposed on the valve body and the valve cover, and both retaining rings are disposed on the outside of the valve seat and abut against the valve seat.

[0012] To prevent the valve seat from being squeezed out of the seat groove and ultimately causing valve leakage under high pressure medium pressure, if the valve is quickly opened and closed, this floating ball valve is equipped with retaining rings. Two retaining rings are respectively set on the valve body and the valve cover, and both retaining rings are set on the outside of the valve seat and abut against the valve seat. In this way, the retaining rings can abut and limit the valve seat, preventing the valve seat from being squeezed out of the seat groove.

[0013] In one optional embodiment, both the valve body and the valve cover are provided with a valve seat groove and a retaining ring groove, with the retaining ring groove located on the outside of the valve seat.

[0014] The valve seat is adapted to be placed in the valve seat groove, and the retaining ring is engaged in the retaining ring groove and abuts against the valve seat.

[0015] In one alternative embodiment, the retaining ring is C-shaped and is an elastic element.

[0016] In one alternative embodiment, the retaining ring has through holes at both ends.

[0017] In one optional embodiment, the valve cover is provided with a retaining ring operating groove, the retaining ring operating groove is connected to the retaining ring groove and the retaining ring operating groove is located outside the retaining ring groove.

[0018] In this floating ball valve structure, the retaining ring operating groove is an annular groove located outside the retaining ring groove and connected to it. The semi-circular shape of the retaining ring operating groove facilitates the placement of the operator's fingers or instruments. The depth of the retaining ring operating groove can be equal to or greater than the depth of the retaining ring groove. During operation, after the operator's fingers or instruments pick up the retaining ring, the groove allows for easy placement of the retaining ring. Similarly, when the retaining ring needs to be removed, the operator's fingers or instruments easily pick it up through the groove.

[0019] In one alternative embodiment, a gasket is provided at the abutment between the valve body and the valve cover, and the valve body is provided with an assembly portion suitable for assembling the gasket. The gasket is configured such that when it is placed on the assembly portion, the valve body abuts against the valve cover.

[0020] This type of floating ball valve, operating in a grease-free environment, is prone to gasket falling off when the gasket is placed on the valve cover for assembly. Therefore, this invention addresses this issue by providing an assembly part on the valve body. Before installing the valve body and valve cover, the gasket is secured using this assembly part, preventing it from falling off during installation.

[0021] In one alternative embodiment, the mounting portion is a gasket groove formed on the valve body, and the gasket is mounted inside the gasket groove.

[0022] In one alternative embodiment, the valve cover is provided with an annular protrusion adapted to insert into the gasket groove and abut against the gasket.

[0023] In one alternative embodiment, packing is also included, the packing being placed between the periphery of the valve stem and the valve body.

[0024] In one alternative implementation, it further includes:

[0025] A pressure sleeve is fitted onto the valve stem, with its bottom end located between the valve stem and the valve body and abutting against the packing.

[0026] A disc spring is sleeved on the valve stem, and the disc spring abuts against the upper end of the pressure sleeve;

[0027] A nut is fitted onto the valve stem and engages with the external thread on the valve stem;

[0028] An anti-loosening washer is fitted onto the valve stem and positioned above the nut;

[0029] The handle is located on the valve stem and above the anti-loosening pad.

[0030] The floating ball valve provided by this utility model has the following advantages:

[0031] 1. The floating ball valve provided by this utility model includes a valve body and a valve cover, a ball, a valve stem, two valve seats, and two retaining rings. The valve body and the valve cover are connected, and a placement cavity is formed between the valve body and the valve cover. Both the valve body and the valve cover are provided with flow channels communicating with the placement cavity. The ball is movably disposed in the placement cavity and is provided with a through hole. The bottom end of the valve stem passes through the valve body and is connected to the ball, and is configured to drive the ball to rotate in the placement cavity. The two valve seats are respectively disposed on the valve body and the valve cover, and both valve seats are adapted to abut against the surface of the ball. The two retaining rings are respectively disposed on the valve body and the valve cover, and both retaining rings are disposed on the outside of the valve seats and abut against the valve seats.

[0032] To prevent the valve seat from being squeezed out of the seat groove and ultimately causing valve leakage under high pressure medium pressure, if the valve is quickly opened and closed, this floating ball valve is equipped with retaining rings. Two retaining rings are respectively set on the valve body and the valve cover, and both retaining rings are set on the outside of the valve seat and abut against the valve seat. In this way, the retaining rings can abut and limit the valve seat, preventing the valve seat from being squeezed out of the seat groove.

[0033] 2. The floating ball valve provided by this utility model has a retaining ring operating groove on the valve cover, the retaining ring operating groove is connected to the retaining ring groove and the retaining ring operating groove is located outside the retaining ring groove.

[0034] In this floating ball valve structure, the retaining ring operating groove is an annular groove. The retaining ring is placed inside the retaining ring operating groove, which is located on the outside of the retaining ring groove and is connected to it. The retaining ring operating groove is semi-circular, facilitating the placement of the operator's fingers or operating instruments. The depth of the retaining ring operating groove can be equal to or greater than the depth of the retaining ring operating valve. During operation, after the operator's fingers or operating instruments pick up the retaining ring, the space within the retaining ring operating groove facilitates its placement inside. Similarly, when it is necessary to remove the retaining ring, the operator's fingers or operating instruments can easily pick up the retaining ring through the retaining ring operating groove.

[0035] 3. The floating ball valve provided by this utility model has a gasket at the contact point between the valve body and the valve cover, and the valve body has an assembly part suitable for assembling the gasket. After the gasket is placed on the assembly part, the valve body and the valve cover abut against each other.

[0036] This type of floating ball valve, operating in a grease-free environment, is prone to gasket falling off when the gasket is placed on the valve cover for assembly. Therefore, this invention addresses this issue by providing an assembly part on the valve body. Before installing the valve body and valve cover, the gasket is secured using this assembly part, preventing it from falling off during installation. Attached Figure Description

[0037] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a schematic structural view of the floating ball valve provided in an embodiment of the present invention;

[0039] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0040] Figure 3 for Figure 1 Enlarged view of the structure at point B;

[0041] Figure 4 This is a schematic structural view of the valve cover in the floating ball valve provided in an embodiment of the present utility model;

[0042] Figure 5 This is a schematic view of the retaining ring structure in the floating ball valve provided in an embodiment of this utility model.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1-Valve body;

[0045] 2-Valve cover; 21-Snap ring operating groove;

[0046] 3-sphere;

[0047] 4-Valve stem;

[0048] 5-Valve seat;

[0049] 6-Clasp;

[0050] 7-Gasket;

[0051] 8-Packaging;

[0052] 9-Pressure sleeve;

[0053] 10-Disc Spring;

[0054] 11-Nut;

[0055] 12-Anti-loosening pad;

[0056] 13-Handle;

[0057] 14- Fastening nut. Detailed Implementation

[0058] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0059] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0060] Example

[0061] In the ball valve manufacturing industry, many parts require degreasing and oil removal to meet stringent customer requirements and ensure surface cleanliness. This process is crucial for guaranteeing valve performance under special operating conditions. However, traditional degreasing and oil removal valves simply perform the degreasing and oil removal operation on conventionally designed parts without altering the conventional valve structure.

[0062] In a conventional floating ball valve structure, degreasing and oil removal of the parts reveals a series of serious problems. Firstly, valve assembly becomes difficult because, in a grease-free environment, the gasket is prone to falling off when placed on the valve cover during assembly. Similarly, the valve seat also faces the risk of falling off during the cover-closing process, significantly impacting assembly efficiency and quality. Secondly, degreasing and oil removal increases friction between the ball and seat. Under high-pressure media, if the valve undergoes rapid opening and closing operations, the valve seat may even be squeezed out of the seat groove, ultimately leading to valve leakage and severely affecting the valve's sealing performance and operational safety.

[0063] Therefore, this embodiment provides a floating ball valve, such as Figures 1 to 5 As shown, the valve includes a valve body 1 and a valve cover 2, a ball 3, a valve stem 4, two valve seats 5, and two retaining rings 6. The valve body 1 is connected to the valve cover 2, and a placement cavity is formed between the valve body 1 and the valve cover 2. Both the valve body 1 and the valve cover 2 are provided with flow channels communicating with the placement cavity. The ball 3 is movably disposed in the placement cavity and is provided with a through hole. The bottom end of the valve stem 4 passes through the valve body 1 and is connected to the ball 3, and is configured to drive the ball 3 to rotate in the placement cavity. The two valve seats 5 are respectively disposed on the valve body 1 and the valve cover 2, and the valve seats 5 are both adapted to abut against the surface of the ball 3. The two retaining rings 6 are respectively disposed on the valve body 1 and the valve cover 2, and the retaining rings 6 are both disposed on the outside of the valve seats 5 and abut against the valve seats 5.

[0064] To prevent the valve seat 5 from being squeezed out of the valve seat groove and ultimately causing valve leakage if the valve is opened and closed quickly under high pressure medium, this embodiment is provided with retaining rings 6. Two retaining rings 6 are respectively provided on the valve body 1 and the valve cover 2, and both retaining rings 6 are located on the outside of the valve seat 5 and abut against the valve seat 5. Thus, the retaining rings 6 can abut and limit the valve seat 5, preventing the valve seat 5 from being squeezed out of the valve seat groove.

[0065] In this embodiment, both the valve body 1 and the valve cover 2 are provided with a valve seat groove and a retaining ring groove. The retaining ring groove is located outside the valve seat 5, and the valve seat 5 is suitable for being placed in the valve seat groove. The retaining ring 6 is engaged in the retaining ring groove and abuts against the valve seat 5.

[0066] like Figure 1As shown, in order to fix the retaining ring 6, retaining ring grooves are provided on both the valve body 1 and the valve cover 2 in this embodiment. The retaining ring grooves are located on the outside of the valve seat 5. Therefore, after the valve seat 5 is placed in the valve seat groove, the retaining ring 6 is engaged in the retaining ring groove. This can close the space in the disassembly direction of the valve seat 5 through the retaining ring 6. That is, the retaining ring 6 located on the outside of the valve seat 5 can fix the valve seat 5 by abutting against it, preventing it from being squeezed out of the valve seat groove.

[0067] In this embodiment, the retaining ring groove is an annular groove provided on the valve body 1 and the valve cover 2, such as... Figure 5 As shown, the retaining ring 6 is C-shaped. During installation, the outer ring of the retaining ring 6 is engaged in the retaining ring groove to fix the retaining ring 6. The retaining ring 6 is secured to the valve seat 5 by abutting against the side wall of the retaining ring groove. The retaining ring 6 is an elastic element; during installation, the diameter of the retaining ring 6 is reduced by squeezing it to facilitate installation into the retaining ring groove. Furthermore, the two ends of the retaining ring 6 have through holes, allowing for quick assembly and disassembly using retaining ring pliers, improving assembly efficiency.

[0068] In this embodiment, as Figure 4 As shown, the valve cover 2 is provided with a retaining ring operating groove 21, which is connected to the retaining ring groove and is located outside the retaining ring groove.

[0069] like Figure 4 In the structure shown, the retaining ring operating groove 21 is an annular groove. The retaining ring operating groove 21 is located on the outside of the retaining ring groove and is connected to the retaining ring groove. The retaining ring operating groove 21 is semi-circular, which facilitates the placement of the operator's fingers or operating instruments. The depth of the retaining ring operating groove 21 can be equal to or greater than the depth of the retaining ring operating groove 21.

[0070] During operation, after the operator's fingers or operating instruments pick up the retaining ring 6, the retaining ring 6 can be easily placed inside the retaining ring operating groove 21 through the space of the retaining ring operating groove 21. Similarly, when it is necessary to remove the retaining ring 6, the operator's fingers or operating instruments can easily pick up the retaining ring 6 through the retaining ring operating groove 21.

[0071] In this embodiment, as Figure 1 As shown, a gasket 7 is provided at the contact point between the valve body 1 and the valve cover 2. The valve body 1 is provided with an assembly part suitable for assembling the gasket 7. After the gasket 7 is placed on the assembly part, the valve body 1 and the valve cover 2 abut against each other.

[0072] Because it is in a grease-free environment, the gasket 7 is prone to falling off when it is placed on the valve cover 2 for assembly. Therefore, this embodiment provides an assembly part on the valve body 1. Before installing the valve body 1 and the valve cover 2, the gasket 7 is fixed by the assembly part on the valve body 1, and then the valve body 1 and the valve cover 2 are installed. This can prevent the gasket 7 from falling off during the installation of the valve body 1 and the valve cover 2.

[0073] Specifically, such as Figure 3 As shown, the assembly part is a gasket groove formed on the valve body 1, and the gasket 7 is assembled inside the gasket groove. By setting the assembly part as a gasket groove formed on the valve body 1, the gasket 7 can be placed directly inside the gasket groove when installing it, thus preventing the gasket 7 from falling off.

[0074] In this embodiment, as Figure 3 As shown, the valve cover 2 has an annular protrusion, which is suitable for inserting into the gasket groove and abutting against the gasket 7.

[0075] In this embodiment, as Figure 1 As shown, the floating ball valve also includes a pressure sleeve 9, a disc spring 10, a nut 11, an anti-loosening washer 12, and a handle 13. The pressure sleeve 9 is sleeved on the valve stem 4, and the bottom end of the pressure sleeve 9 is located between the valve stem 4 and the valve body 1 and abuts against the packing 8. The disc spring 10 is sleeved on the valve stem 4 and abuts against the upper end of the pressure sleeve 9. The nut 11 is sleeved on the valve stem 4 and engages with the external thread on the valve stem 4. The anti-loosening washer 12 is sleeved on the valve stem 4 and located above the nut 11. The handle 13 is located on the valve stem 4 and located above the anti-loosening washer 12.

[0076] A packing 8 is provided between the valve stem 4 and the valve body 1 to achieve a seal between the valve stem 4 and the valve body 1. A pressure sleeve 9 is provided to abut against the packing 8. A disc spring 10, a nut 11, and an anti-loosening washer 12 are provided on the upper side of the pressure sleeve 9 to apply pressure to the pressure sleeve 9, ensuring that the pressure sleeve 9 maintains contact with the packing 8. A handle 13 is fixed to the valve stem 4, and the valve stem 4 is rotated via the handle 13, which in turn drives the ball 3 to rotate inside the placement cavity, thereby controlling the opening or closing of the floating ball valve. A fastening nut 14 is provided at the top of the valve stem 4 to fix the handle 13 to the valve stem 4.

[0077] In this embodiment, the floating ball valve also includes a thrust pad, which is fitted around the four sides of the valve stem, such as... Figure 1 As shown, the diameter of one end of the valve stem 4 used to connect the ball 3 is increased to form a stepped surface on the surface of the valve stem 4. The valve stem hole wall on the valve body 1 used to pass through the valve stem 4 is provided with an annular protrusion for abutting against the stepped surface on the valve stem 4. The thrust pad is adapted to abut against the annular protrusion and the stepped surface on the valve stem 4.

[0078] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A floating ball valve characterized by, include: A valve body (1) and a valve cover (2) are connected, and a placement cavity is formed between the valve body (1) and the valve cover (2); both the valve body (1) and the valve cover (2) are provided with flow channels communicating with the placement cavity; A sphere (3) is movably disposed within the placement cavity, and the sphere (3) is provided with a through hole; The valve stem (4) passes through the valve body (1) at its bottom end and is connected to the ball (3), and is configured to drive the ball (3) to rotate in the placement cavity; Two valve seats (5) are respectively disposed on the valve body (1) and the valve cover (2), and both valve seats (5) are adapted to abut against the surface of the ball (3); Two retaining rings (6) are respectively disposed on the valve body (1) and the valve cover (2), and both retaining rings (6) are disposed on the outside of the valve seat (5) and abut against the valve seat (5).

2. The floating ball valve of claim 1, wherein, Both the valve body (1) and the valve cover (2) are provided with valve seat grooves and retaining ring grooves, and the retaining ring grooves are located on the outside of the valve seat (5); The valve seat (5) is adapted to be placed in the valve seat groove, and the retaining ring (6) is engaged in the retaining ring groove and abuts against the valve seat (5).

3. The floating ball valve of claim 2, wherein, The retaining ring (6) is C-shaped and is an elastic element.

4. The floating ball valve of claim 3, wherein, The retaining ring (6) has through holes at both ends.

5. The floating ball valve of claim 3, wherein, The valve cover (2) is provided with a retaining ring operation groove (21), which is connected to the retaining ring groove and is located outside the retaining ring groove.

6. The floating ball valve of claim 1, wherein, A gasket (7) is provided at the contact point between the valve body (1) and the valve cover (2). The valve body (1) is provided with an assembly part suitable for assembling the gasket (7). After the gasket (7) is placed on the assembly part, the valve body (1) and the valve cover (2) abut against each other.

7. The floating ball valve of claim 6, wherein, The assembly part is a gasket groove opened on the valve body (1), and the gasket (7) is assembled inside the gasket groove.

8. The floating ball valve according to claim 7, characterized in that, The valve cover (2) is provided with an annular protrusion, which is adapted to be inserted into the groove of the gasket and abut against the gasket (7).

9. The floating ball valve according to any one of claims 1-8, characterized in that, It also includes packing (8), which is placed between the valve stem (4) and the valve body (1).

10. The floating ball valve according to claim 9, characterized in that, Also includes: A pressure sleeve (9) is fitted on the valve stem (4). The bottom end of the pressure sleeve (9) is located between the valve stem (4) and the valve body (1) and abuts against the packing (8). A disc spring (10) is sleeved on the valve stem (4), and the disc spring (10) abuts against the upper end of the pressure sleeve (9); Nut (11) is fitted onto the valve stem (4) and engages with the external thread on the valve stem (4); An anti-loosening washer (12) is fitted onto the valve stem (4) and located on the upper side of the nut (11); The handle (13) is located on the valve stem (4) and above the anti-loosening pad (12).

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