Durable square head valve rod

Abstract

The utility model discloses a durable square head valve rod, which relates to the technical field of stainless steel products, and comprises a valve rod main body, the upper end of the valve rod main body is fixedly connected with a connecting square head, the centers of the four walls of the connecting square head are respectively provided with an auxiliary clamping groove, and the connecting square head is fixedly sleeved with a connecting sleeve. The upper end of the connecting sleeve is fixedly connected with a rotating handle, the bottom of the connecting sleeve extends downwards to be connected to the upper end of the valve rod body in a sleeving mode, an auxiliary clamping groove is formed, and the auxiliary clamping groove can be matched with the clamping convex edge to disperse twisting force applied to the connecting square head when the connecting sleeve is twisted, so that the service life of the connecting square head is prolonged; and through the arrangement of the connecting sleeve, the connecting sleeve wraps the connecting square head and the upper end of the valve rod body, the sealing performance of the contact faces of the connecting sleeve, the valve rod body and the connecting square head is effectively improved, water inflow corrosion is avoided, and the service life of the square-head valve rod is further prolonged.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel products technology, specifically to a durable square-head valve stem. Background Technology

[0002] The valve stem is a crucial component of a valve, used for transmission. It connects to the actuator or handle at the top and directly drives the valve core to move or rotate, thereby achieving the valve's opening, closing, or regulating function. The valve stem is one of the key components of a valve, with its threaded section connected to the valve ball.

[0003] When using valve stems, the outer end is usually directly exposed for connection, making it susceptible to corrosion and damage. Furthermore, the connection between the valve stem and the handle is subject to concentrated stress, and prolonged opening and closing with the hand can easily cause fatigue damage at the valve stem connection, affecting the service life of the valve stem. Therefore, we propose a durable square-head valve stem. Utility Model Content

[0004] The purpose of this utility model is to solve the problems that when valve stems are used, the outer end is usually directly exposed for connection, which makes them prone to corrosion and damage. In addition, the force is concentrated at the connection point between the valve stem and the handle. After long-term opening and closing and rotating the handle, the valve stem connection is prone to fatigue damage, which affects the service life of the valve stem. This utility model provides a durable square-head valve stem.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A durable square-head valve stem includes a valve stem body, a connecting square head fixedly connected to the upper end of the valve stem body, auxiliary slots being provided at the center of each of the four walls of the connecting square head, a connecting sleeve being fitted and fixedly attached to the connecting square head, and a rotating handle being fixedly connected to the upper end of the connecting sleeve, the bottom of the connecting sleeve extending downwards and fitting onto the upper end of the valve stem body, and a snap-fit ​​protrusion being fixedly connected to the upper end of the inner wall of the connecting sleeve corresponding to the position of the auxiliary slot.

[0007] Furthermore, a connecting stud is fixedly connected to the upper end of the connecting square head, and a cap nut is threaded onto the upper end of the connecting stud after passing through the connecting sleeve and the center of the rotating handle.

[0008] Furthermore, a transverse through hole is provided at the center of the lower half of the connecting sleeve and at the corresponding position of the upper end of the valve stem body, and a reinforcing pin is inserted through the transverse through hole on the connecting sleeve and the valve stem body.

[0009] Furthermore, multiple graphite slots are provided at equal intervals on the outer wall of the valve stem body at the contact position with the valve body, and each of the multiple graphite slots is filled with a graphite lubricating block.

[0010] Furthermore, the lower edge of the cap nut is provided with a waterproof step, and the upper end of the rotating handle is fixedly connected with a waterproof boss corresponding to the position of the waterproof step, and the waterproof boss is inserted into the waterproof step.

[0011] Furthermore, a sealing rubber gasket is fixedly connected to the upper end of the waterproof boss.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model features a valve stem body with a connecting square head at the upper end fixed by a connecting sleeve. A rotating handle fixed at the upper end of the connecting sleeve facilitates user operation. An auxiliary slot, in cooperation with the locking protrusion, disperses the torsional force applied to the connecting square head when the connecting sleeve is twisted, thereby improving the service life of the connecting square head and making the square head valve stem more durable. The connecting sleeve, which wraps around the connecting square head and the upper end of the valve stem body, effectively improves the sealing of the contact surfaces between the connecting sleeve and the valve stem body and the connecting square head, preventing water ingress and corrosion, further extending the service life of the square head valve stem.

[0014] 2. This utility model, through the setting of connecting studs and cap nuts, the threaded engagement of the connecting studs and cap nuts can press and fix the connecting sleeve and the rotating handle, ensuring the fixed connection between the connecting sleeve and the rotating handle and the upper end of the valve stem body. The setting of cap nuts can improve the sealing performance at the contact position between the connecting studs and the rotating handle.

[0015] 3. This utility model uses a transverse through hole and a reinforcing pin to fix the connecting sleeve and valve stem body, further dispersing the torsional force when the connecting sleeve is twisted, and improving the service life of the square-head valve stem. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a front sectional view of the present invention;

[0018] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a bottom sectional view of the square connector of this utility model.

[0020] Reference numerals: 1. Valve stem body; 2. Connecting square head; 3. Connecting sleeve; 4. Rotating handle; 5. Connecting stud; 6. Cap nut; 7. Horizontal through hole; 8. Reinforcing pin; 9. Graphite groove; 10. Auxiliary groove; 11. Waterproof step; 12. Waterproof boss; 13. Sealing rubber gasket. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 - Figure 4 This utility model provides a durable square-head valve stem, including a valve stem body 1, a connecting square head 2 fixedly connected to the upper end of the valve stem body 1, auxiliary slots 10 are provided in the center of each of the four walls of the connecting square head 2, a connecting sleeve 3 is fixedly fitted onto the connecting square head 2, and a rotating handle 4 is fixedly connected to the upper end of the connecting sleeve 3. The bottom of the connecting sleeve 3 extends downward and fits onto the upper end of the valve stem body 1, and a snap-fit ​​protrusion is fixedly connected to the upper end of the inner wall of the connecting sleeve 3 corresponding to the position of the auxiliary slot 10.

[0023] In this embodiment, preferably, a connecting stud 5 is fixedly connected to the upper end of the connecting square head 2. The upper end of the connecting stud 5 passes through the center of the connecting sleeve 3 and the rotating handle 4 and is threadedly connected to a cap nut 6. Through the setting of the connecting stud 5 and the cap nut 6, the threaded engagement of the connecting stud 5 and the cap nut 6 can press and fix the connecting sleeve 3 and the rotating handle 4, ensuring the fixed connection between the connecting sleeve 3 and the rotating handle 4 and the upper end of the valve stem body 1. The setting of the cap nut 6 can improve the sealing performance of the contact position between the connecting stud 5 and the rotating handle 4.

[0024] In this embodiment, preferably, a transverse through hole 7 is provided at the center of the lower half of the connecting sleeve 3 and at the corresponding position of the upper end of the valve stem body 1. A reinforcing pin 8 is inserted through the transverse through hole 7 on the connecting sleeve 3 and the valve stem body 1. Through the provided transverse through hole 7 and reinforcing pin 8, the reinforcing pin 8 fixes the connection between the connecting sleeve 3 and the valve stem body 1, further dispersing the torsional force when the connecting sleeve 3 is twisted, and improving the service life of the square-headed valve stem.

[0025] In this embodiment, preferably, multiple graphite slots 9 are provided at equal intervals at the contact positions between the outer wall of the valve stem body 1 and the valve body, and each of the multiple graphite slots 9 is filled with graphite lubricating blocks; by providing multiple graphite slots 9, the graphite lubricating blocks fixed in the multiple graphite slots 9 can reduce the friction between the valve stem body 1 and the valve body at the contact positions when the valve stem body 1 rotates, reduce wear, and further improve the service life of the square-head valve stem.

[0026] In this embodiment, preferably, a waterproof step 11 is provided on the lower edge of the cap nut 6, and a waterproof boss 12 is fixedly connected to the upper end of the rotating handle 4 corresponding to the position of the waterproof step 11. The waterproof boss 12 is inserted into the waterproof step 11. Through the waterproof step 11 and the waterproof boss 12, the waterproof boss 12 is inserted into the waterproof step 11 to form a step on the contact surface between the cap nut 6 and the upper end of the rotating handle 4, which avoids water seepage, improves the sealing performance of the contact position between the connecting sleeve 3 and the valve stem body 1, and further improves the corrosion resistance of the square-head valve stem.

[0027] In this embodiment, preferably, a sealing rubber gasket 13 is fixedly connected to the upper end of the waterproof boss 12; the sealing rubber gasket 13 improves the sealing of the contact surface between the waterproof step 11 and the waterproof boss 12, thereby improving the waterproof effect.

[0028] The working principle and usage process of this utility model are as follows: When the device is in use, the valve stem body 1 is provided, and the connecting square head 2 at the upper end of the valve stem body 1 is fixed by the connecting sleeve 3. The rotating handle 4 fixed at the upper end of the connecting sleeve 3 facilitates the user's rotation operation. The auxiliary slot 10 is provided, which can disperse the torsional force applied to the connecting square head 2 when the connecting sleeve 3 is twisted by cooperating with the locking protrusion, thereby improving the service life of the connecting square head 2 and making the square head valve stem more durable. The connecting sleeve 3 is provided, which wraps around the connecting square head 2 and the upper end of the valve stem body 1, effectively improving the sealing of the contact surface between the connecting sleeve 3 and the valve stem body 1 and the connecting square head 2, preventing water ingress and corrosion, and further improving the service life of the square head valve stem.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A durable square stem, characterized by: The utility model relates to a valve rod body (1) is connected with the connecting square head (2) of upper end fixedly, the four walls center of connecting square head (2) are all set up with the auxiliary clamping slot (10), the connecting sleeve (3) of sleeve joint is fixed on connecting square head (2), and the upper end of connecting sleeve (3) is fixedly connected with the rotary handle (4), the bottom of connecting sleeve (3) extends the sleeve joint on the upper end of valve rod body (1) downward, and the inner wall upper end of connecting sleeve (3) is fixedly connected with the clamping convex edge corresponding auxiliary clamping slot (10) position.

2. A rugged square stem valve stem as defined in claim 1, wherein: The upper end of the connecting square head (2) is fixedly connected with a connecting stud (5), the upper end of the connecting stud (5) is threadedly connected with a cover-shaped nut (6) after penetrating through the centers of the connecting sleeve (3) and the rotary handle (4).

3. A rugged square stem valve stem as defined in claim 1, wherein: A horizontal through hole (7) is formed at the center of the lower half of the connecting sleeve (3) and the upper end of the valve rod body (1), and a reinforcing pin (8) is inserted through the horizontal through hole (7) of the connecting sleeve (3) and the valve rod body (1).

4. A rugged square stem valve stem as defined in claim 1 wherein: A plurality of graphite clamping slots (9) are formed at the outer wall of the valve rod body (1) at equal intervals, and each graphite clamping slot (9) is filled with a graphite lubricating block.

5. A rugged square stem valve stem as defined in claim 2 wherein: A waterproof step (11) is formed at the lower edge of the cover-shaped nut (6), a waterproof boss (12) is fixedly connected to the upper end of the rotary handle (4) at a position corresponding to the waterproof step (11), and the waterproof boss (12) is inserted into the waterproof step (11).

6. A rugged square stem valve stem as defined in claim 5 wherein: A sealing rubber pad (13) is fixedly connected to the upper end of the waterproof boss (12).

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