Ball valve stem

Abstract

The utility model provides a kind of ball valve stem, including valve stem body;The middle part of valve stem body is provided with annular groove, annular groove is used to install sealing ring;The lower end of valve stem body is provided with the boss of '' vertical line type'', and the boss is used to cooperate with the insertion slot on valve core and is circumferentially limited;The upper part of valve stem body forms the insertion rod part of waist type, and the insertion rod part is used to be inserted into the insertion hole on the one end of handle and is circumferentially limited with handle;Supporting step is formed on the valve stem body at the lower end of insertion rod part, and the supporting step is used to abut with the lower end surface of the one end of handle;Annular reverse buckle is provided on the outer wall of the upper part of insertion rod part, and the lower end surface of annular reverse buckle is used to abut with the upper end surface of the one end of handle to prevent handle from separating from valve stem body;The utility model does not need to be fastened by nut to handle and valve stem body, so as to have the advantage that handle is connected with valve stem body conveniently.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and more specifically, to a ball valve stem. Background Technology

[0002] Ball valves are a common type of valve body, used to control the interruption and continuation of fluid flow when installed in pipelines. The valve stem is a crucial component of a ball valve; its lower end connects to the valve core and provides circumferential positioning, while its upper end connects to one end of the handle and provides circumferential positioning. When the handle is turned, the valve stem drives the valve core to rotate, thus opening and closing the ball valve. However, in existing ball valve structures, after the upper end of the valve stem is inserted into the handle, a nut needs to be threaded onto the upper end of the valve stem to secure it to the handle and prevent the handle from detaching from the valve stem. This design, requiring a nut to be threaded onto the upper end of the valve stem for securing the valve stem and handle, presents a disadvantage of inconvenient connection between the handle and valve stem. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a ball valve stem that does not require the handle and valve stem body to be fastened with nuts, thus having the advantage of convenient connection between the handle and valve stem body.

[0004] This utility model provides a ball valve stem, including a valve stem body; an annular groove is provided in the middle of the valve stem body for installing a sealing ring; an "I"-shaped boss is provided on the lower end of the valve stem body for engaging with a slot on the valve core and for circumferential positioning; an waist-shaped insertion part is formed on the upper part of the valve stem body for inserting into a hole on one end of the handle and for circumferential positioning of the handle; a support step is formed on the valve stem body at the lower end of the insertion part for abutting against the lower end face of one end of the handle; an annular buckle is provided on the outer wall of the upper part of the insertion part, and the lower end face of the annular buckle abuts against the upper end face of one end of the handle to prevent the handle from detaching from the valve stem body.

[0005] By adopting the above-described structure, this utility model allows the valve stem body and the handle to be inserted into each other. After the handle passes over the annular buckle, the lower end face of the handle can abut against the support step, and the upper end face of the handle can abut against the lower end face of the annular buckle. This enables the valve stem body and the handle to be fastened together and prevents the handle from detaching from the valve stem body. In other words, there is no need to fasten the handle and the valve stem body with a nut, thus providing the advantage of convenient connection between the handle and the valve stem body.

[0006] In one possible implementation, an annular conical surface is formed on the outer wall of the upper part of the annular buckle. The annular conical surface is used to guide and cooperate with the wall of the insertion hole on the handle so that one end of the handle passes over the annular buckle and is inserted into the insertion rod portion located below the annular buckle.

[0007] In one possible implementation, the upper end of the insertion rod is provided with a reduced diameter portion, and the lower end of the reduced diameter portion and the connection between the upper end of the insertion rod form a first annular chamfer surface.

[0008] In one possible implementation, a second annular chamfered surface is provided on the outer wall of the upper end of the reduced diameter portion. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model. Detailed Implementation

[0010] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0011] In the description of the embodiments of this application, 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 the embodiments of this application based on the specific circumstances.

[0012] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0013] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] See Figures 1-2As shown in the figure, this application discloses a ball valve stem, including a valve stem body 1; an annular groove 11 is provided in the middle of the valve stem body 1, the annular groove 11 is used to install a sealing ring; a "I"-shaped boss 12 is provided on the lower end of the valve stem body 1, the boss 12 is used to engage with the slot on the valve core and be circumferentially limited; a waist-shaped insertion rod part 13 is formed on the upper part of the valve stem body 1, the insertion rod part 13 is used to be inserted into the insertion hole on one end of the handle and be circumferentially limited; a support step 14 is formed on the valve stem body 1 at the lower end of the insertion rod part 13, the support step 14 is used to abut against the lower end face of one end of the handle; an annular buckle 15 is provided on the outer wall of the upper part of the insertion rod part 13, the lower end face of the annular buckle 15 is used to abut against the upper end face of one end of the handle to prevent the handle from disengaging from the valve stem body 1. By adopting the above structure, after the insertion part of the valve stem body is inserted into the insertion hole on one end of the handle, and after one end of the handle passes over the annular buckle, the lower end face of one end of the handle can abut against the support step, and the upper end face of one end of the handle can abut against the lower end face of the annular buckle. This achieves the fastening of the valve stem body and the handle, and prevents the handle from detaching from the valve stem body. That is, there is no need to fasten the handle and the valve stem body with a nut, thus having the advantage of convenient connection between the handle and the valve stem body. In addition, after the insertion part of the valve stem body is inserted into the insertion hole on one end of the handle, the handle end is pressed by a pressing tool so that the handle end passes over the annular buckle and abuts against the support step. At this time, the upper end face of one end of the handle can abut against the lower end face of the annular buckle.

[0015] An annular conical surface 151 is formed on the outer wall of the upper part of the annular buckle 15. The annular conical surface 151 is used to guide and cooperate with the wall of the insertion hole on the handle so that one end of the handle can pass over the annular buckle 15 and be inserted into the insertion rod part 13 located below the annular buckle 15. After the annular conical surface is provided on the outer wall of the upper part of the annular buckle, when the insertion rod part is inserted into one end of the handle, the annular conical surface can be guided and cooperate with the wall of the insertion hole on the handle so that one end of the handle can pass over the annular buckle and be inserted into the insertion rod part located below the annular buckle, which can facilitate the insertion of the insertion rod part on the valve stem body.

[0016] The upper end of the insertion rod portion 13 is provided with a reduced diameter portion 16, and the lower end of the reduced diameter portion 16 and the upper end of the insertion rod portion 13 form a first annular chamfer surface 17. Due to the reduced diameter portion, when the insertion rod portion is engaged with the insertion hole located at one end of the handle, the reduced diameter portion can be pre-inserted into the insertion hole at one end of the handle. That is, during the pressing process of the pressing tool on one end of the handle, the reduced diameter portion and the handle can achieve a pre-insertion function, so that the insertion rod portion can be subsequently inserted into the insertion hole at one end of the handle, and so that one end of the handle can pass over the annular buckle and engage with the insertion rod portion located below the annular buckle. Furthermore, under the action of the reduced diameter portion, during the pressing process of the pressing tool on one end of the handle, the handle can be prevented from detaching from the valve stem body. In addition, under the action of the first annular chamfer surface, during the pressing process of the pressing tool on one end of the handle, the first annular chamfer surface can engage with the hole wall of the insertion hole at one end of the handle for guidance, so that the insertion rod portion can be inserted into the insertion hole at one end of the handle.

[0017] A second annular chamfered surface 161 is provided on the outer wall of the upper end of the reduced diameter part 16; by providing the second annular chamfered surface, when the reduced diameter part is engaged with the insertion hole located on one end of the handle, the second annular chamfered surface can engage with the hole wall of the insertion hole on one end of the handle to guide the reduced diameter part into the insertion hole on one end of the handle.

[0018] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A ball valve stem, comprising a stem body (1); an annular groove (11) is provided in the middle of the stem body (1), the annular groove (11) being used to install a sealing ring; a "I"-shaped boss (12) is provided on the lower end of the stem body (1), the boss (12) being used to engage with a slot on a valve core and be circumferentially limited; an waist-shaped insert portion (13) is formed on the upper part of the stem body (1), the insert portion (13) being used to insert into a hole on one end of a handle and be circumferentially limited by the handle; characterized in that: A support step (14) is formed on the valve stem body (1) located at the lower end of the insertion rod part (13). The support step (14) is used to abut against the lower end face of one end of the handle. An annular buckle (15) is provided on the outer wall of the upper part of the insertion rod part (13). The lower end face of the annular buckle (15) is used to abut against the upper end face of one end of the handle to prevent the handle from disengaging from the valve stem body (1).

2. The ball valve stem according to claim 1, characterized in that: An annular cone surface (151) is formed on the outer wall of the upper part of the annular buckle (15). The annular cone surface (151) is used to guide the insertion hole on the handle so that one end of the handle can pass over the annular buckle (15) and be inserted into the insertion rod (13) located below the annular buckle (15).

3. The ball valve stem according to claim 1 or 2, characterized in that: The upper end of the insertion rod (13) is provided with a reduced diameter section (16), and the lower end of the reduced diameter section (16) and the upper end of the insertion rod (13) form a first annular chamfered surface (17).

4. The ball valve stem according to claim 3, characterized in that: A second annular chamfered surface (161) is provided on the outer wall of the upper end of the reduced diameter portion (16).

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