A gate valve stem having a reinforcing rib structure

Abstract

The utility model relates to valve technical field, specifically disclose a gate valve valve rod with reinforcing rib structure, include: valve rod base, it is the cylindrical rod body of two -way stainless steel is made, and valve rod base top end has valve rod body, valve rod body and valve rod base are integral, and valve rod base and valve rod body jointly constitute the valve rod of gate valve. This has the gate valve valve rod with reinforcing rib structure, through annular equidistance distribution's trapezoidal reinforcing rib rod and the strip -shaped sliding slot of valve rod body inlay, the bending -resistant, torsional rigidity of take the handle of valve, and trapezoidal section optimization stress distribution effectively reduces the bending deformation risk under high -pressure working condition, and two -way stainless steel material's valve rod base and valve rod body integral molding, combine the local reinforcing effect of reinforcing rib rod, and the flush design of reinforcing rib rod and valve rod body avoids stress concentration point, reduces the risk of fatigue crack generation, along with the synergistic effect of positioning rod and limit ring, reduce the friction loss between moving parts.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a gate valve stem with a reinforcing rib structure. Background Technology

[0002] Gate valves, as important shut-off devices in pipeline systems, control the flow of fluid by raising and lowering a gate through a valve stem. They are widely used in many fields such as petrochemicals, power, metallurgy, and water supply and drainage. The valve stem, as the core transmission component of the gate valve, directly affects the valve's sealing performance, service life, and the safe and stable operation of the entire system.

[0003] Traditional gate valve stems use a solid cylindrical structure made of a single material. When faced with complex operating conditions such as high pressure, high frequency opening and closing, and large diameter, they will be subjected to huge axial forces. They are prone to fracture failure due to bending deformation or stress concentration. In addition, the valve stem is easily affected by thermal expansion, which leads to poor sealing between the valve stem and the valve body, resulting in media leakage. Utility Model Content

[0004] The purpose of this utility model is to provide a gate valve stem with a reinforced rib structure to solve the problems mentioned in the background art. Traditional gate valve stems, which are made of a single material and are solid cylindrical, are subject to huge axial forces and are prone to fracture failure due to bending deformation or stress concentration. In addition, the valve stem is easily affected by thermal expansion, which leads to poor sealing between the valve stem and the valve body, resulting in media leakage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gate valve stem with a reinforcing rib structure, including a valve stem base, which is a cylindrical rod made of bidirectional stainless steel, and a valve stem body at the top of the valve stem base. The valve stem body and the valve stem base are integral, and the valve stem base and the valve stem body together constitute the valve stem of the gate valve.

[0006] The top end of the valve stem base abuts against the bottom end of the limiting sealing ring, and a positioning sealing ring is sleeved on the outer layer of the limiting sealing ring. The outer wall surface of the valve stem body is provided with connecting threads, and the connecting threads are connected to the limiting buckle threads.

[0007] The valve stem body is provided with reinforcing ribs distributed axially, and the reinforcing ribs are arranged in a ring at equal intervals. The valve stem body is penetrated by a positioning rod, and the positioning rod penetrates the limiting ring.

[0008] Using the above technical solution, the two-way stainless steel material provides basic corrosion resistance, the one-piece molded structure eliminates weak points in the connection, the reinforcing ribs enhance the bending and torsional resistance, and the positioning rod and limit ring ensure the stability of movement.

[0009] Preferably, the axis of the valve stem base is aligned with the axis of the valve stem body, and the valve stem body and the positioning rod are arranged in a concentric circle.

[0010] By adopting the above technical solution, the valve stem base is aligned with the axis of the valve stem body and the positioning rod, which reduces movement deviation, lowers the risk of wear on the sealing surface, and extends the service life of the valve.

[0011] Preferably, the limiting sealing ring is penetrated by the valve stem body, and both the limiting sealing ring and the positioning sealing ring are arranged in a concentric circle.

[0012] By adopting the above technical solution, the concentric circles of the limiting sealing ring and the positioning sealing ring cooperate to form two sealing barriers, effectively preventing media leakage.

[0013] Preferably, the limiting buckle is engaged with the limiting sealing ring, and the limiting buckle is made of corrosion-resistant rubber.

[0014] By adopting the above technical solution, the limit buckle made of corrosion-resistant rubber material can not only achieve axial locking, but also provide a buffering and shock absorption function, reduce the impact of vibration on sealing performance, and resist media corrosion.

[0015] Preferably, the valve stem body has a strip groove adapted to the reinforcing rib, and the valve stem body has a cylindrical hole through which the positioning rod passes.

[0016] The above technical solution, with its strip groove and cylindrical hole design, allows for modular assembly of the reinforcing ribs and positioning rods, facilitating disassembly and replacement and reducing maintenance costs and time.

[0017] Preferably, the cross-section of the reinforcing rib is trapezoidal, and the outer wall surface of the reinforcing rib is flush with the outer wall surface of the valve stem.

[0018] By adopting the above technical solution, the trapezoidal cross-section stiffeners reduce material usage while ensuring strength, and their flush design avoids stress concentration and improves fatigue life.

[0019] Preferably, the bottom end of the limiting ring is engaged with the top end of the reinforcing rib in a fitted manner, and the bottom end of the limiting ring is installed perpendicular to the reinforcing rib.

[0020] The above technical solution, with its interlocking vertical connection between the limiting ring and the reinforcing rib, effectively restricts the radial displacement of the valve stem, ensuring stable operation, especially under high-speed fluid impact.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the valve stem of the gate valve with a reinforcing rib structure:

[0022] 1. By interlocking the trapezoidal reinforcing ribs with the strip grooves of the valve stem body, the bending and torsional resistance of the valve stem is improved. The trapezoidal cross-section optimizes stress distribution and effectively reduces the risk of bending deformation under high pressure conditions. The valve stem base made of bidirectional stainless steel is integrally formed with the valve stem body. Combined with the local reinforcement effect of the reinforcing ribs, the flush design of the reinforcing ribs with the valve stem body avoids stress concentration points and reduces the risk of fatigue cracks. With the synergistic effect of the positioning rod and the limiting ring, the frictional loss between moving parts is reduced, further improving the overall durability.

[0023] 2. The concentric circles of the limiting sealing ring and the positioning sealing ring form a double sealing barrier. The positioning sealing ring is made of corrosion-resistant rubber, which effectively fills the sealing gap, resists media corrosion, and reduces the risk of leakage. With the locking connection between the limiting buckle and the limiting sealing ring, combined with the abutment structure between the valve stem base and the end face of the limiting sealing ring, the valve stem is accurately fixed in the axial position, preventing axial movement caused by pressure fluctuations and further improving sealing stability.

[0024] 3. Further limit buckles and threaded connections, as well as the end face mating structure between the limit sealing ring and the valve stem base, make the valve stem assembly easy to disassemble and replace. The concentric circle arrangement and interlocking structure of each component provide clear positioning guidance during installation, reduce assembly errors, and improve production efficiency. Attached Figure Description

[0025] Fig. 1 This is a schematic diagram of the overall external three-dimensional structure of this utility model;

[0026] Fig. 2 This is a schematic diagram of the overall disassembled three-dimensional structure of this utility model;

[0027] Fig. 3 This is a schematic diagram of the overall internal side section of the present invention.

[0028] Fig. 4 This is a three-dimensional structural diagram of the valve stem body and reinforcing rib of this utility model.

[0029] Fig. 5 This is a three-dimensional structural diagram of the valve stem base and valve stem body of this utility model.

[0030] Fig. 6 This is a three-dimensional structural diagram of the installation of the reinforcing rib and the limiting ring of this utility model.

[0031] In the diagram: 1. Valve stem base; 2. Limiting sealing ring; 3. Positioning sealing ring; 4. Limiting buckle; 5. Valve stem body; 6. Connecting thread; 7. Reinforcing rib; 8. Limiting ring; 9. Positioning rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figs. 1-6 This utility model provides a technical solution: a gate valve stem with a reinforcing rib structure, including a valve stem base 1, a limiting sealing ring 2, a positioning sealing ring 3, a limiting buckle 4, a valve stem body 5, a connecting thread 6, a reinforcing rib rod 7, a limiting ring 8, and a positioning rod 9;

[0034] Among them, the valve stem base 1 is a cylindrical rod made of bidirectional stainless steel, and the valve stem base 1 has a valve stem body 5 at the top. The valve stem body 5 and the valve stem base 1 are integrated, and the valve stem base 1 and the valve stem body 5 together constitute the valve stem of the gate valve.

[0035] The top of the valve stem base 1 abuts against the bottom of the limiting sealing ring 2, and the limiting sealing ring 2 is fitted with a positioning sealing ring 3. The outer wall of the valve stem body 5 is provided with a connecting thread 6, and the connecting thread 6 is threadedly connected to the limiting buckle 4. The axis of the valve stem base 1 is aligned with the axis of the valve stem body 5, and the valve stem body 5 and the positioning rod 9 are arranged in a concentric circle. The limiting sealing ring 2 is penetrated by the valve stem body 5, and the limiting sealing ring 2 and the positioning sealing ring 3 are both arranged in a concentric circle. The limiting buckle 4 is engaged with the limiting sealing ring 2, and the limiting buckle 4 is made of corrosion-resistant rubber.

[0036] Referring to the attached diagrams in the instruction manual Figs. 1-6 As shown, the valve stem base 1 and valve stem body 5 are made of biaxially oriented stainless steel and are integrally molded to form the valve stem. The valve stem base 1 provides stable support for the valve stem, and its biaxially oriented stainless steel material ensures basic strength and corrosion resistance. The valve stem body 5, connected to the gate, transmits the force required to open and close the gate valve. The axes of the two are aligned to ensure the straightness and stability of the force transmission process, avoiding additional torque and stress concentration caused by axial deviation. The positioning sealing ring 3 is fitted over the limiting sealing ring 2 and mates with the corresponding sealing surface of the valve body to form a sealing structure, preventing fluid leakage from the gap between the valve stem and the valve body. Figs. 1-3 As shown, during installation and use, the limit buckle 4 is screwed onto the valve stem body 5 by threads and engages with the limit sealing ring 2 to further fix the axial position of the valve stem and prevent the valve stem from axial movement due to fluid pressure, vibration and other factors during operation.

[0037] The valve stem body 5 is provided with reinforcing ribs 7 distributed axially, and the reinforcing ribs 7 are arranged in a ring at equal intervals. The valve stem body 5 is penetrated by a positioning rod 9, and the positioning rod 9 penetrates a limiting ring 8. A strip-shaped sliding groove adapted to the reinforcing ribs 7 is opened in the valve stem body 5, and a cylindrical hole through which the positioning rod 9 is opened in the valve stem body 5. The cross-section of the reinforcing ribs 7 is trapezoidal, and the outer wall surface of the reinforcing ribs 7 is flush with the outer wall surface of the valve stem body 5. The bottom end of the limiting ring 8 is engaged with the top end of the reinforcing ribs 7, and the bottom end of the limiting ring 8 is installed perpendicular to the reinforcing ribs 7.

[0038] Referring to the attached diagrams in the instruction manual Figs. 1-6 As shown, the reinforcing rib 7 is made of precipitation-hardening stainless steel 17-4PH. The reinforcing rib 7 has a strip structure and is embedded in the strip groove inside the valve stem body 5, which enhances the overall structural strength and deformation resistance of the valve stem. During the opening and closing of the gate valve, the valve stem bears axial force, torque and other loads. The reinforcing rib 7 can disperse these loads, reduce stress concentration in the valve stem body 5, improve the bending and torsional resistance of the valve stem, and extend the service life of the valve stem. The bottom end of the limiting ring 8 is fitted and engaged with the top end of the reinforcing rib 7 and is installed vertically, which further restricts the radial displacement of the valve stem and assists the reinforcing rib 7 in enhancing the structural strength of the valve stem, so that the valve stem can maintain a stable shape and position when subjected to complex loads.

[0039] Working principle: When using the gate valve stem with a reinforced structure, the valve stem base 1 and the valve stem body 5 are integrally formed and made of two-way stainless steel, which has both high strength and corrosion resistance. The valve stem base 1 provides a stable foundation for the valve stem, while the valve stem body 5 is connected to the gate, which converts the power of the drive device into the lifting and lowering movement of the gate to control the flow of fluid. The limiting sealing ring 2 and the positioning sealing ring 3 sleeved on the surface of the valve stem form a double sealing structure. At the same time, the limiting buckle 4 is connected to the valve stem body 5 by threads and engages with the limiting sealing ring 2 to further fix the axial position of the valve stem.

[0040] During the opening and closing of the gate valve, the valve stem bears complex loads such as axial force and torque. The reinforcing rib 7 optimizes stress distribution, evenly distributing the load to the entire valve stem and reducing stress concentration on the valve stem body 5. The positioning rod 9 passes through the valve stem body 5 and the limiting ring 8, providing precise guidance for the valve stem movement and ensuring stability during the valve stem's lifting and lowering process. As the limiting ring 8 and the top of the reinforcing rib 7 are fitted together, the vertically installed structure further restricts the radial displacement of the valve stem and assists the reinforcing rib 7 in enhancing the structural stability of the valve stem. Under complex working conditions such as high pressure and high flow rate, this positioning constraint system can effectively suppress the swing and offset of the valve stem, enabling the valve stem to maintain a stable shape and position even when subjected to complex loads, ensuring the reliable operation of the gate valve and increasing its overall practicality.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gate valve stem with a reinforcing rib structure, comprising: The valve stem base (1) is a cylindrical rod made of bidirectional stainless steel, and the valve stem base (1) has a valve stem body (5) at the top. The valve stem body (5) and the valve stem base (1) are integrated, and the valve stem base (1) and the valve stem body (5) together constitute the valve stem of the gate valve. The valve stem base (1) is characterized in that the top end of the valve stem base (1) abuts against the bottom end of the limiting sealing ring (2), and the limiting sealing ring (2) is fitted with a positioning sealing ring (3) on the outer layer. The valve stem body (5) is provided with a connecting thread (6) on the outer wall surface, and the connecting thread (6) is threadedly connected to the limiting buckle (4). The valve stem body (5) is provided with reinforcing ribs (7) distributed axially, and the reinforcing ribs (7) are arranged in a ring at equal intervals. The valve stem body (5) is penetrated by a positioning rod (9), and the positioning rod (9) penetrates the limiting ring (8).

2. The gate valve stem with a reinforcing rib structure according to claim 1, characterized in that: The axis of the valve stem base (1) is aligned with the axis of the valve stem body (5), and the valve stem body (5) and the positioning rod (9) are arranged in a concentric circle.

3. The gate valve stem with a reinforcing rib structure according to claim 1, characterized in that: The limiting sealing ring (2) is penetrated by the valve stem body (5), and the limiting sealing ring (2) and the positioning sealing ring (3) are both arranged in a concentric circle.

4. The gate valve stem with a reinforcing rib structure according to claim 1, characterized in that: The limiting buckle (4) engages with the limiting sealing ring (2), and the limiting buckle (4) is made of corrosion-resistant rubber.

5. The gate valve stem with a reinforcing rib structure according to claim 1, characterized in that: The valve stem body (5) has a strip groove adapted to the reinforcing rib (7) and a cylindrical hole through which the positioning rod (9) passes.

6. The gate valve stem with a reinforcing rib structure according to claim 1, characterized in that: The cross-section of the reinforcing rib (7) is trapezoidal, and the outer wall of the reinforcing rib (7) is flush with the outer wall of the valve stem body (5).

7. The gate valve stem with a reinforcing rib structure according to claim 1, characterized in that: The bottom end of the limiting ring (8) is engaged with the top end of the reinforcing rib (7) in a fitted manner, and the bottom end of the limiting ring (8) is installed perpendicular to the reinforcing rib (7).

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