Throttle valve with novel connecting structure

Abstract

The utility model discloses a throttle valve with a novel connecting structure, which comprises a valve core and a valve rod, one side of the valve core is inserted into the valve rod, and the valve core is connected with the valve rod through a connecting component; a limiting structure is arranged on the end face of the outer side of the mounting end of the valve element, and a locking piece is movably arranged at the mounting end of the valve rod. When the locking piece is located in the valve rod, the limiting structure is clamped on the locking piece, so that the valve element cannot rotate relative to the valve rod; the valve element is a wedge-shaped valve element and is of an integrally-formed structure, the valve element comprises a first main body, a wedge-shaped block is fixed to the outer side end of the first main body, and a connecting column is fixed to the inner side end of the first main body; relative rotation of the valve element and the valve rod is prevented through the limiting structure, so that the valve element with the requirement for the installation direction is convenient to fix, flow direction control of the throttling valve is achieved, and safety and practicability of the throttling valve are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum, natural gas mining technical field especially, relates to a throttle valve with novel connection structure. BACKGROUND

[0002] The throttle valve plays an important role in the process of petroleum and natural gas mining, and is mainly used for controlling the flow and pressure of fluid, so as to realize safe and efficient production. In the use process, the valve core and valve rod are prone to erosion under the action of high pressure and high flow fluid. Nowadays, in order to prevent erosion, most valve cores adopt hard alloy materials, which have the characteristics of high hardness and corrosion resistance. However, the corresponding brittleness increases. In the past, holes are processed on the valve core, and a pin is connected with the valve rod (as shown in the drawing), which has a high risk of fracture under the impact of long-term high-frequency vibration or pressure fluctuation. Figure 4

[0003] In addition, for the valve core with specific installation direction requirements, such as the wedge-shaped valve core, the existing connection technology cannot effectively ensure the accuracy of the installation direction, and is easy to rotate. Once the direction deviates, the valve may not be able to seal normally during work, resulting in fluid leakage, affecting the normal operation of the system, and even may cause safety accidents. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the defects of prior art, and provides a throttle valve with novel connection structure, which changes the connection mode of the valve core and valve rod, reduces the risk of fracture under the impact of long-term high-frequency vibration or pressure fluctuation, and designs a locking and anti-rotation structure according to the specific installation direction requirements of the valve core.

[0005] The utility model aims at overcoming the defects of prior art, and provides a throttle valve with novel connection structure, which changes the connection mode of the valve core and valve rod, reduces the risk of fracture under the impact of long-term high-frequency vibration or pressure fluctuation, and designs a locking and anti-rotation structure according to the specific installation direction requirements of the valve core.

[0006] A throttle valve with novel connection structure comprises:

[0007] The valve core and the valve rod, one side of the valve core is inserted into the valve rod, and the valve core and the valve rod are connected through a connecting assembly; the outer side end face of the installation end of the valve core is provided with a limiting structure, and the installation end of the valve rod is movably provided with a locking piece; when the locking piece is located in the valve rod, the limiting structure is clamped on the locking piece, so that the valve core cannot rotate relative to the valve rod.

[0008] In one or more embodiments of the utility model, the valve core is a wedge-shaped valve core, and is an integral structure, the valve core comprises a first main body, a wedge-shaped block is fixed to the outer side end of the first main body, and a connecting column is fixed to the inner side end of the first main body.

[0009] ​In one or more embodiments of this utility model, the valve stem is an integrally formed structure. The valve stem includes a second body, a connecting section is fixed to the outer end of the second body, the outer wall of the connecting section forms a threaded structure, a mounting post is fixed to the inner end of the second body, and a mounting groove is formed on the end face of the mounting post. The connecting post is adapted to the mounting groove.

[0010] In one or more embodiments of this utility model, the limiting structure includes a cross groove on the flat end face of the outer end of the connecting post, a screw hole is provided on the mounting post, the middle part of the screw hole communicates with the mounting groove, the locking member is adapted to the screw hole, and the position of the locking member corresponds to the cross groove.

[0011] In one or more embodiments of this utility model, the locking member is a first internal hexagonal locking screw.

[0012] In one or more embodiments of this utility model, the connecting assembly includes a plurality of steel balls, which are disposed at the connection between the valve core and the valve stem; a first arc-shaped groove is formed on the outer wall of the connecting column, and a second arc-shaped groove is formed on the inner wall of the mounting groove, the first arc-shaped groove and the second arc-shaped groove forming an annular cavity; the plurality of steel balls are located in the cavity, a plugging hole is formed on the mounting column, the plugging hole is connected to the cavity, and a fastener is screwed onto the plugging hole.

[0013] The beneficial effects of this utility model are:

[0014] This invention proposes a throttle valve with a novel connection structure. A cross-shaped groove is machined at the bottom of the valve core, and a locking component is screwed onto the valve stem. The locking component engages with the cross-shaped groove, preventing the valve core from rotating relative to the valve stem. This design ensures that the valve core is installed accurately in the predetermined direction, effectively avoiding valve sealing failure and fluid leakage caused by installation direction deviation or self-rotation. This guarantees the normal operation of the valve system and improves system safety and stability. Furthermore, this invention utilizes the interaction between the valve core, valve stem, and steel ball to prevent the valve core from detaching from the valve stem. The contact surface is transformed into a curved surface, resulting in uniform stress distribution. This connection method reduces stress concentration and increases the strength of the valve core and valve stem. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the valve stem structure;

[0017] Figure 3 This is a schematic diagram of the valve core structure;

[0018] Figure 4This is a diagram of the commonly used valve core connection structure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] In this embodiment, as Figures 1 to 3 As shown, a throttle valve with a novel connection structure includes a valve core 1 and a valve stem 5. One side of the valve core 1 is inserted into the valve stem 5, and the valve core 1 and the valve stem 5 are connected by a connecting assembly. A limiting structure is provided on the outer end face of the mounting end of the valve core 1, and a locking member 4 is movably provided on the mounting end of the valve stem 5. When the locking member 4 is located inside the valve stem 5, the limiting structure is locked onto the locking member 4, preventing the valve core 1 from rotating relative to the valve stem 5.

[0021] In this embodiment, the limiting structure is formed by a groove engraved on the outer end of the mounting end of the valve core 1. The groove engages with the locking member to form a limit, which prevents the relative rotation of the valve core 1 and the valve stem 5. This makes it easier to fix the valve core, which has requirements for the installation direction, thereby realizing the flow direction control of the throttle valve and increasing the safety and practicality of the throttle valve.

[0022] In one or more embodiments of this utility model, the valve core 1 is a wedge-shaped valve core and is an integrally formed structure. The valve core 1 includes a first body 11, a wedge block 12 is fixed to the outer end of the first body 11, and a connecting post 13 is fixed to the inner end of the first body 11.

[0023] In this embodiment, the first main body 11 and the connecting column 13 are cylindrical structures, and the diameter of the first main body 11 is the same as the diameter of the connecting column 13. The wedge block 12 and the connecting column 13 are located at the two planar ends of the first main body 11, respectively. The main structure of the wedge block 12 is also a cylindrical structure, and its arc-shaped wall has an inclined surface. The maximum diameter of the wedge block 12 is smaller than the diameter of the first main body 11 and larger than the diameter of the connecting column 13.

[0024] In one or more embodiments of this utility model, the valve stem 5 is an integrally formed structure. The valve stem 5 includes a second body 51. A connecting section 52 is fixed to the outer end of the second body 51. The outer wall of the connecting section 52 forms a threaded structure. A mounting post 53 is fixed to the inner end of the second body 51. A mounting groove is opened on the end face of the mounting post 53. The connecting post 13 is adapted to the mounting groove.

[0025] In this embodiment, the outer diameter of the mounting post 53 is larger than the diameter of the second body 51 and the connecting section 52. The connecting section 52 and the mounting post 53 are located at the two planar ends of the second body 51, respectively. The diameter and depth of the mounting groove are adapted to the diameter and length of the connecting post 13, so that one end of the valve core 1 can be inserted into the valve stem 5 to form a locking.

[0026] In one or more embodiments of this utility model, the limiting structure includes a cross groove 131 formed on the flat end face of the outer end of the connecting post 13, a screw hole is formed on the mounting post 53, the middle part of the screw hole communicates with the mounting groove, the locking member 4 is adapted to the screw hole, and the position of the locking member 4 corresponds to the cross groove 131.

[0027] In this embodiment, the cross groove 131 is composed of two intersecting vertical grooves. By engaging the locking member 4 with any of the vertical grooves, the installation direction of the wedge valve core can be fixed. To prevent the wedge valve core from having an installation direction requirement, the wedge surface of the valve core 1 faces the fluid inlet direction. Therefore, a cross groove 131 is machined at the bottom of the valve core 1. The locking member 4 is screwed onto the valve stem 5. The locking member 4 is engaged with the cross groove 131, so that the valve core 1 cannot rotate relative to the valve stem 5.

[0028] In one or more embodiments of this utility model, the locking member 4 is a first hexagon socket head cap screw. The first hexagon socket head cap screw is screwed into the mounting post 53, and the middle part of the first hexagon socket head cap screw engages with the cross groove 131, so that the wedge-shaped valve core cannot rotate.

[0029] In one or more embodiments of this utility model, the connecting assembly includes a plurality of steel balls 2, which are disposed at the connection between the valve core 1 and the valve stem 5; a first arc-shaped groove 132 is provided on the outer wall of the connecting column 13, and a second arc-shaped groove 531 is provided on the inner wall of the mounting groove, wherein the first arc-shaped groove 132 and the second arc-shaped groove 531 together form an annular cavity; the plurality of steel balls 2 are located in the cavity, and a plugging hole is provided on the mounting column 53, which is connected to the cavity, and a fastener 3 is screwed onto the plugging hole.

[0030] In this embodiment, the valve core 1 is machined with a first arc-shaped groove, and the valve stem 5 is machined with a second arc-shaped groove. After the valve core 1 and the valve stem 5 are engaged, the first arc-shaped groove and the second arc-shaped groove form an annular groove. A plugging hole is provided on one side of the annular groove. A certain amount of steel balls 2 are inserted into the annular groove through the plugging hole. Through the interaction between the valve core 1, the valve stem 5 and the steel balls 2, the mounting end of the valve core 1 inserted into the valve stem 5 cannot fall off, and the contact force surface is changed into a curved surface, so that the force is uniform. This connection method reduces stress concentration and increases the strength of the valve core 1 and the valve stem 5. The fastener 3 is a second internal hexagon lock screw, and its length is adapted to the depth of the plugging hole.

[0031] In another embodiment, the limiting structure includes a vertical groove 131 formed on the planar end face of the outer end of the connecting post 13, the cross-sectional shape of the vertical groove 131 being rectangular or circular.

[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A throttle valve with a novel connection structure, characterized in that, The utility model relates to a kind of throttling valves with new connection structure, including: Valve core (1) and valve stem (5), one side of the valve core (1) is inserted in valve stem (5), and the valve core (1) is connected with valve stem (5) by connecting assembly;The outer side end surface of the installation end of the valve core (1) is provided with limiting structure, and the installation end of the valve stem (5) movably sets locking piece (4);When the locking piece (4) is located in the valve stem (5), the limiting structure is clamped on the locking piece (4), so that the valve core (1) cannot rotate relative to the valve stem (5).

2. The throttling valve according to claim 1, wherein: The valve core (1) is a wedge-shaped valve core, and is an integral structure, the valve core (1) comprises a first body (11), the outer side end of the first body (11) is fixed with a wedge-shaped block (12), and the inner side end of the first body (11) is fixed with a connecting column (13).

3. The throttling valve according to claim 2, wherein: The valve stem (5) is an integral structure, the valve stem (5) comprises a second body (51), the outer side end of the second body (51) is fixed with a connecting section (52), the outer wall of the connecting section (52) forms a threaded structure, the inner side end of the second body (51) is fixed with a mounting column (53), and the end face of the mounting column (53) is provided with a mounting groove, and the connecting column (13) is matched with the mounting groove.

4. The throttling valve according to claim 3, wherein: The limiting structure comprises a cross recess (131) provided on the plane end face of the outer side end of the connecting column (13), the mounting column (53) is provided with a threaded hole, the middle part of the threaded hole is communicated with the mounting groove, the locking piece (4) is matched with the threaded hole, and the locking piece (4) corresponds to the position of the cross recess (131).

5. The throttling valve according to claim 1, wherein: The locking piece (4) is a first internal hexagonal lock screw.

6. The throttling valve according to claim 3, wherein: The connecting assembly comprises a plurality of steel balls (2), and the plurality of steel balls (2) are arranged at the connecting portion between the valve core (1) and the valve stem (5);The outer wall of the connecting column (13) is provided with a first arc-shaped groove (132), the inner wall of the mounting groove is provided with a second arc-shaped groove (531), the first arc-shaped groove (132) and the second arc-shaped groove (531) form a circular annular cavity, a plurality of steel balls (2) are located in the cavity, the mounting column (53) is provided with a plug hole, the plug hole is connected with the cavity, and the plug hole is screwed with a fastener (3).

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