V-shaped ball valve with anti-flying structure

Abstract

The utility model provides a V-shaped ball valve with an anti-flying structure, and relates to the field of ball valves. The V-shaped ball valve of the anti-flying structure comprises a valve body, a ball core, a valve seat, a stop seat and a valve rod, the ball core is installed in the valve body, a guide rod is placed at the lower end of the valve body and penetrates through a ball lining to be connected with the ball core, a gasket, a bolt and an elastic pad are placed at the lower end of the valve body to enable the valve body to be fixedly connected with a lower flange, and the lower end of the valve rod penetrates through a filling hole and is connected with the ball core. According to the V-shaped ball valve with the anti-flying structure, through the arrangement of the valve body, the ball core, the valve seat, the stop seat, the valve rod, the ball bushing, the guide rod, the gasket, the lower flange, the bolt, the spring washer, the valve seat gasket and the screw, on the basis of a common V-shaped ball valve structure, a set screw can be screwed into the joint of the valve rod and the ball core, and the set screw is prevented from loosening through spot welding; the stability of the valve rod in the working process can be guaranteed, the anti-flying function is more reliable, and the use safety and reliability of products are guaranteed.

Description

Technical Field

[0001] The utility model relates to a V-type ball valve, specifically a V-type ball valve with an anti-flying structure, belonging to the technical field of ball valves. Background Technique

[0002] A ball valve is a valve that drives a ball to rotate around the axis of the ball valve through a valve stem. It is mainly used to cut off or connect the medium in a pipeline, and can also be used for the regulation and control of fluids. The working principle of a ball valve is to drive the ball to rotate around the axis of the ball valve through the valve stem to achieve the opening and closing operations.

[0003] In a common V-type ball valve, the valve stem and the ball center are connected by a hexagon or a spline. Under the action of the medium pressure, it is easy to loosen over time, the valve stem will move upward, and in severe cases, it will even fly out of the valve body, resulting in safety accidents such as punching through the pipeline or causing personal injury; for this reason, we provide a V-type ball valve with an anti-flying structure to solve the above problems. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The purpose of the utility model is to provide a V-type ball valve with an anti-flying structure to solve the problem that it is difficult to always ensure the stability of the valve stem during the movement process in the above-mentioned comparative document.

[0006] (2) Technical Solutions

[0007] The utility model is realized through the following technical solutions: a V-type ball valve with an anti-flying structure, including a valve body, a ball core, a valve seat, a stop seat and a valve stem. Its characteristics are: the ball core is installed inside the valve body, the guide rod is placed at the lower end of the valve body and passes through the sphere bushing to be connected with the ball core, a washer is placed at the lower end of the valve body, and the valve body is tightly connected to the lower flange by bolts and spring washers. The lower end of the valve stem passes through the stuffing box and is connected to the ball core. The tight fit between the components makes the V-type ball valve have an anti-flying effect.

[0008] Preferably, the upper end of the valve stem is connected to the corresponding driving device, the valve seat and the valve seat gasket are installed inside the valve body and cooperate with the ball core, the stop seat is tightened inside the valve body, and the setting of the ball core ensures the normal operation of the V-type ball valve.

[0009] Preferably, a set screw is screwed into the connection between the valve stem and the ball core, and the screw is spot-welded to prevent loosening. The setting of the set screw strengthens the stability between the components and makes the components not easily separated.

[0010] The utility model provides a V-type ball valve with an anti-flying structure, and its beneficial effects are as follows:

[0011] 1. The anti-flying structure V-type ball valve, through the settings of the valve body, ball core, valve seat, stop seat, valve stem, sphere bushing, guide rod, washer, lower flange, bolt, spring washer, valve seat gasket, and screw, can ensure the stability during the movement of the valve stem, making the anti-flying function more reliable and ensuring the use safety and reliability of the product. Brief Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0013] Figure 2 It is a schematic diagram of the internal structure of the valve body of the present utility model.

[0014]

Description of the Main Component Symbols

[0015] 1. Valve body; 2. Ball core; 3. Valve seat; 4. Stop seat; 6. Valve stem; 17. Sphere bushing; 18. Guide rod; 19. Washer; 20. Lower flange; 21. Bolt; 22. Spring washer; 23. Valve seat gasket; 24. Screw. Detailed Description of the Invention

[0016] The embodiment of the present utility model provides an anti-flying structure V-type ball valve.

[0017] Please refer to Figure 1 and Figure 2 , which includes a valve body 1, a ball core 2, a valve seat 3, a stop seat 4, and a valve stem 6. The ball core 2 is installed inside the valve body 1. The ball core 2 is a key structural component of this ball valve. Generally, the ball core 2 is made of stainless steel material. It is the core component that supports and rotates the valve body 1, controlling the on-off and flow direction of the fluid in the pipeline.

[0018] The guide rod 18 is placed at the lower end of the valve body 1 and passes through the sphere bushing 17 to be connected with the ball core 2. The setting of the sphere bushing 17 mainly plays the roles of sealing and wear protection. Generally, corrosion-resistant materials such as polytetrafluoroethylene or graphite are used. A washer 19 is placed at the lower end of the valve body 1. The bolt 21 and the spring washer 22 fasten and connect the valve body 1 with the lower flange 20. The lower end of the valve stem 6 passes through the stuffing box and is connected with the ball core 2. The upper end of the valve stem 6 is connected with the corresponding driving device. Under the action of the medium pressure, the cooperation of the valve stem 6 and the set screw 24 can prevent the valve stem 6 from loosening after a long time, resulting in the valve stem 6 moving upward and even flying out of the valve body in severe cases.

[0019] The valve seat 3 and the valve seat gasket 23 are installed inside the valve body 1. The valve seat gasket 23 is a key component to prevent medium leakage. It cooperates with the ball core 2 to tighten the stop seat 4 inside the valve body 1. A set screw 24 is screwed into the connection between the valve stem 6 and the ball core 2, and the screw 24 is spot-welded to prevent loosening. The setting of the set screw 24 facilitates the installation by the staff and ensures the stability after installation.

[0020] Working principle: When the V-ball valve is working, the valve stem 6 drives the ball core 2 to rotate by 0-90°, changing the throttling area of the medium passage in the valve body 1 to achieve the adjustment and control of process parameters. For the V-ball valve with an anti-flying structure, due to the firm connection between the valve stem 6 and the ball core 2, the valve stem 6 will not move upward during operation and is even less likely to fly out, ensuring the safety and reliability of product use. At the same time, this structure is not only convenient to operate in the processing technology, but also the product is easy to disassemble and maintain.

[0021] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A V-shaped ball valve with an anti-flying structure, comprising a valve body (1), a ball core (2), a valve seat (3), a stop seat (4) and a valve stem (6), characterized in that: The ball core (2) is installed in the valve body (1), the guide rod (18) is placed in the lower end of the valve body (1) and passes through the ball bushing (17) to be connected with the ball core (2), a gasket (19) is placed at the lower end of the valve body (1), the valve body (1) and the lower flange (20) are fastened together by bolts (21) and spring washers (22), and the lower end of the valve stem (6) passes through the packing hole and is connected with the ball core (2).

2. The V-type ball valve with anti-flying structure according to claim 1 is characterized in that: The upper end of the valve stem (6) is connected to a corresponding driving device, and the valve seat (3) and the valve seat gasket (23) are installed in the valve body (1) and cooperate with the ball core (2) to tighten the stop seat (4) in the valve body (1).

3. The V-type ball valve with anti-flying structure according to claim 1 is characterized in that: A set screw (24) is screwed into the connection between the valve stem (6) and the ball core (2), and the screw (24) is spot welded to prevent loosening.

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