Kelly bar plug valve

Abstract

The utility model provides a kelly bar plug valve, which relates to the technical field of plug valves and comprises a valve body, a valve cover is mounted at the top of the valve body, a through hole groove is formed in the side wall of the valve cover in a penetrating manner, a rotating handle is mounted in the through hole groove in an inserting manner, and the rotating handle consists of a sleeve handle and an extension handle. According to the plug valve, the overall design is novel, the structure is simple, the overall length of the rotating handle is adjusted, the rotating handle can be matched with different types of people for use, and the overall practicability is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of plug valve technology, and more specifically, it relates to a square drill pipe plug valve. Background Technology

[0002] A plug valve is a control valve in the drill string circulation system and is one of the effective tools for preventing blowouts. The operation of a angular drill pipe plug valve is very simple; it can be opened or closed by turning it 90 degrees as indicated with a special wrench. It has good sealing performance and corrosion resistance. Angular drill pipe plug valves are widely used in the oil drilling industry.

[0003] Based on the above, the inventors have discovered the following problems: plug valves are divided into different types according to usage requirements. Some plug valves are opened by rotating the internal hex bolt (i.e., square drill pipe plug valves), while others are opened by rotating a rod. However, the rod length of existing plug valves is fixed and cannot be effectively adjusted according to the user's own situation.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a square drill pipe plug valve in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose and function of this utility model's square drill pipe plug valve are achieved through the following specific technical means:

[0006] A square drill pipe plug valve includes a valve body, a valve cover is installed on the top of the valve body, a through hole groove is provided through the side wall of the valve cover, and a rotating handle is inserted and installed in the through hole groove. The rotating handle consists of a sleeve handle and an extension handle, and the sleeve handle and the extension handle are connected by a locking assembly.

[0007] Furthermore, the engaging assembly includes a through hole on the upper end face of the sleeve handle, one end of the extension handle is inserted into the inside of the sleeve handle, and a limit block is installed at one end of the extension handle.

[0008] Furthermore, a cavity is provided at the top of one end of the extended handle, and a limiting groove is provided on the inner wall of the cavity. A limiting plate is slidably installed between the limiting grooves, a protrusion is installed on the top of the limiting plate, and a spring is installed below the limiting plate inside the cavity.

[0009] Furthermore, the diameter of the protrusion is adapted to the diameter of the through hole.

[0010] Furthermore, the valve body, valve cover, sleeve handle, and extension handle are all metal components, and the surfaces of the valve body, valve cover, sleeve handle, and extension handle are all coated with a zinc layer.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model utilizes a limiting plate, a spring, and a protruding block in conjunction with a through hole. When the overall length of the extension handle is insufficient, the protruding block 7 is pressed down to enter the cavity, and then the extension handle is pulled outward to the designated position. The protruding block is then released, and the limiting plate, under the reaction force of the spring, forces the protruding block to engage with the through hole to complete the fixation. As described above, the overall length of the extension handle within the sleeve handle can be adjusted, thus enabling the overall length adjustment of the rotating handle. This allows the rotating handle to be adapted to different types of users, greatly improving its overall practicality. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of a square drill rod plug valve according to this utility model.

[0014] Figure 2 This is a schematic diagram of a square drill rod plug valve according to the present invention.

[0015] Figure 3 This utility model relates to a square drill rod plug valve. Figure 2 A magnified diagram of point A in the diagram.

[0016] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0017] 1. Valve body; 2. Valve cover; 3. Sleeve handle; 4. Extension handle; 5. Through hole; 6. Chamber; 7. Protrusion; 8. Limiting plate; 9. Spring; 10. Limiting block. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0019] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example:

[0022] As attached Figure 1 To be continued Figure 3 As shown:

[0023] This utility model provides a square drill pipe plug valve, including a valve body 1, a valve cover 2 installed on the top of the valve body 1, a through hole groove provided through the side wall of the valve cover 2, a rotating handle inserted in the through hole groove, the rotating handle is composed of a sleeve handle 3 and an extension handle 4, and the sleeve handle 3 and the extension handle 4 are connected by a locking assembly.

[0024] The engaging assembly includes a through hole 5 on the upper surface of the sleeve handle 3, one end of the extension handle 4 is inserted into the inside of the sleeve handle 3, and a limit block 10 is installed at one end of the extension handle 4.

[0025] The extension handle 4 has a cavity 6 at one top. The inner wall of the cavity 6 has a limiting groove. A limiting plate 8 is slidably installed between the limiting grooves. A protrusion 7 is installed on the top of the limiting plate 8, and a spring 9 is installed below the limiting plate 8 in the cavity 6. The limiting plate 8, spring 9, and protrusion 7 work together with the through hole 5. When the overall length of the extension handle 4 is insufficient, the protrusion 7 is pressed down to enter the cavity 6, and then the extension handle 4 is pulled out to the designated position. The protrusion 7 is then released. At this time, the limiting plate 8 is subjected to the reaction force of the spring 9, which forces the protrusion 7 to engage in the through hole 5 to complete the fixation. Through the above description, the overall length of the extension handle 4 in the sleeve handle 3 can be adjusted. Therefore, the overall length of the rotating handle can be adjusted, making the rotating handle suitable for different types of people and greatly improving the overall practicality.

[0026] The diameter of the protrusion 7 is matched with the diameter of the through hole 5.

[0027] The valve body 1, valve cover 2, sleeve handle 3, and extension handle 4 are all made of metal. The surfaces of the valve body 1, valve cover 2, sleeve handle 3, and extension handle 4 are all coated with a galvanized layer. The galvanized layer design can increase the overall corrosion resistance and oxidation resistance of the plug valve, thereby extending the overall service life of the plug valve.

[0028] The specific usage and function of this embodiment are as follows:

[0029] Before using this type of plug valve, the valve body is first installed in the designated position. Then, when opening, rotating the valve cover 2 will open the valve body. Because the force applied by the operator varies, the force required to open the valve cover 2 also varies. Therefore, in order to open the valve cover 2 better, it is necessary to adjust the overall length of the rotating handle. This is done by using the limiting plate 8, spring 9, and protrusion 7 in conjunction with the through hole 5. When the overall length of the extension handle 4 is insufficient, press down on the protrusion 7 to make it enter the chamber 6, and then pull the extension handle 4 outward to the designated position. Release the protrusion 7. At this time, the limiting plate 8 is subjected to the reaction force of the spring 9, which forces the protrusion 7 to engage in the through hole 5 to complete the fixation. Through the above description, the overall length of the extension handle 4 in the sleeve handle 3 can be adjusted. Therefore, the overall length of the rotating handle can be adjusted, making the rotating handle suitable for different types of people to use, greatly improving the overall practicality.

[0030] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A kelly cock valve comprising a valve body (1), characterised in that: The top of the valve body (1) is provided with a valve cover (2), the side wall of the valve cover (2) is provided with a through hole slot, a rotating handle is inserted and arranged in the through hole slot, the rotating handle is composed of a sleeve handle (3) and an extension handle (4), and the sleeve handle (3) and the extension handle (4) are connected through a clamping assembly.

2. A kelly cock valve as defined in claim 1 wherein: The clamping assembly comprises a through hole (5) formed in the upper end face of the sleeve handle (3), one end of the extension handle (4) is inserted into the sleeve handle (3), and a limiting block (10) is arranged at one end of the extension handle (4).

3. The kelly cock valve of claim 2, wherein: The top of one end of the extension handle (4) is provided with a cavity (6), the inner wall of the cavity (6) is provided with limiting grooves, limiting plates (8) are slidingly arranged between the limiting grooves, the top of the limiting plate (8) is provided with a protruding block (7), and a spring (9) is arranged below the limiting plate (8) in the cavity (6).

4. The kelly cock valve of claim 3, wherein: The diameter of the protruding block (7) is matched with the hole diameter of the through hole (5).

5. The kelly cock valve of claim 1 wherein: The valve body (1), the valve cover (2), the sleeve handle (3) and the extension handle (4) are metal material components, and the surfaces of the valve body (1), the valve cover (2), the sleeve handle (3) and the extension handle (4) are provided with a zinc plating layer.

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