Limiting structure of floating ball valve

Abstract

The utility model discloses a floating ball valve limit structure which comprises a valve body, a pressing plate, a bolt, a limit plate, an operating handle, a valve rod, a filler and a ball body, the valve rod is installed in the center of the valve body, the filler is installed on the valve rod in a sleeved mode in the upper end of the valve body, the pressing plate is installed on the filler, the pressing plate is fixedly installed on the valve body through the bolt, and the ball body is fixedly installed on the valve body through the bolt. A limiting plate is installed above the pressing plate and fixedly connected to a valve rod, the upper end of the valve rod is fixedly connected with an operation handle, and the bottom end of the valve rod is located in the valve body and fixedly connected with a ball. According to the floating ball valve, a novel structure is adopted, the floating ball valve is provided with the limiting structure, the opening and closing position of the ball body of the valve can be effectively limited through mutual matching of the limiting plate and the limiting pin, the accuracy of opening and closing of the ball body of the floating ball valve is improved, the problem of leakage of the valve is avoided, and the floating ball valve is simple and reasonable in structure and convenient to use. Use is safe and reliable, manufacturing cost is low, and practicability is high.

Description

Technical Field

[0001] The utility model relates to a floating ball valve, in particular to a floating ball valve limiting structure. Background Art

[0002] Floating ball valves have a simple structure and good sealing performance and are widely used in the oil and gas industries. In the design of floating ball valves, the valve requires effective limit switches to prevent inaccurate opening and closing positions of the valve ball and valve leakage. To this end, we propose a floating ball valve limit structure. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a floating ball valve limiting structure, which solves the problem that the existing floating ball valve requires effective limiting of the switch position to prevent the valve ball from opening and closing inaccurately and causing valve leakage.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a floating ball valve limiting structure, including a valve body, a pressure plate, a bolt, a limit plate, an operating handle, a valve stem, a packing and a ball, a valve stem is installed in the center of the valve body, a packing is installed on the valve stem inside the upper end of the valve body, a pressure plate is installed on the packing, the pressure plate is fixed to the valve body by bolts, a limit plate is installed above the pressure plate, the limit plate is fixedly connected to the valve stem, the upper end of the valve stem is fixedly connected to the operating handle, and the bottom end of the valve stem is located in the valve body and is fixedly connected to the ball.

[0005] On the basis of the above solution, a limiting groove is provided on the right side of the limiting plate, the limiting groove is arc-shaped, a limiting pin is provided in the limiting groove, and the limiting pin is fixedly connected to the valve body.

[0006] Based on the above solution, the limiting pin and the limiting groove are slidably matched.

[0007] Compared with the prior art, the utility model has the following beneficial effects: a floating ball valve limiting structure adopts a new structure, a limiting structure is set for the floating ball valve, and the switching position of the valve ball can be effectively limited by the cooperation of the limiting plate and the limiting pin, thereby improving the accuracy of opening and closing the ball of the floating ball valve and avoiding the problem of valve leakage. The utility model has a simple and reasonable structure, is safe and reliable to use, has a low production cost and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a structural diagram of a floating ball valve limit structure of the utility model;

[0009] Figure 2 This is a top view of a floating ball valve limiting structure of the utility model.

[0010] The numbers in the figure are: 1-valve body, 2-pressure plate, 3-bolt, 4-limit plate, 401-limit groove, 5-limit pin, 6-operating handle, 7-valve stem, 8-packing, 9-ball. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0012] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0013] Reference Figures 1 to 2 It can be seen that: a floating ball valve limiting structure includes a valve body 1, a pressure plate 2, a bolt 3, a limiting plate 4, an operating handle 6, a valve stem 7, a packing 8 and a ball 9. The valve stem 7 is installed in the center of the valve body 1 (this structure is a mature structure of the existing floating ball valve), and the packing 8 is sleeved and installed on the valve stem 7 at the upper end of the valve body 1. The pressure plate 2 is fixedly installed on the valve body 1 by bolts 3. A limiting plate 4 is installed above the pressure plate 2, and the limiting plate 4 is fixedly connected to the valve stem 7. The upper end of the valve stem 7 is fixedly connected to the operating handle 6, and the bottom end of the valve stem 7 is located in the valve body 1 and fixedly connected to the ball 9 (this structure is a mature structure of the existing floating ball valve).

[0014] A limiting groove 401 is provided on the right side of the limiting plate 4. The limiting groove 401 is arc-shaped. A limiting pin 5 is provided in the limiting groove 401. The limiting pin 5 is fixedly connected to the valve body 1. The limiting pin 5 slides in cooperation with the limiting groove 401. The limiting pin 5 and the limiting groove 401 cooperate with each other to position the rotation angle of the operating handle 6 and accurately and effectively position the switch position of the ball 9 in the floating ball valve.

[0015] The principles and advantages of the present invention are as follows: a floating ball valve limit structure is a partial improvement on the existing floating ball valve, with a limit plate 4 and a limit pin 5 added to match each other. When in use, the valve stem 7 and the ball 9 are rotated by the operating handle 6. During the rotation of the valve stem 7, the limit plate 4 is driven to rotate, and the limit pin 5 in the upper limit groove 401 on the limit plate 4 effectively limits the rotation angle of the operating handle 6, avoiding the problem of inaccurate opening and closing positions after the ball 9 is rotated, preventing the valve from leaking, and greatly improving the safety and reliability of the floating ball valve when in use. The present invention has a simple and reasonable structure, good performance, low production cost, and is suitable for popularization and use.

[0016] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A floating ball valve limiting structure, comprising a valve body (1), a pressure plate (2), a bolt (3), a limiting plate (4), an operating handle (6), a valve stem (7), a packing (8) and a ball (9), characterized in that: A valve stem (7) is installed at the center of the valve body (1), a packing (8) is installed on the valve stem (7) inside the upper end of the valve body (1), a pressure plate (2) is installed on the packing (8), and the pressure plate (2) is fixedly installed on the valve body (1) by bolts (3), a limit plate (4) is installed above the pressure plate (2), and the limit plate (4) is fixedly connected to the valve stem (7), the upper end of the valve stem (7) is fixedly connected to the operating handle (6), and the bottom end of the valve stem (7) is located in the valve body (1) and fixedly connected to the ball (9).

2. A floating ball valve limiting structure according to claim 1, characterized in that: A limiting groove (401) is provided on the right side of the limiting plate (4), the limiting groove (401) is arc-shaped, a limiting pin (5) is provided in the limiting groove (401), and the limiting pin (5) is fixedly connected to the valve body (1).

3. A floating ball valve limiting structure according to claim 2, characterized in that: The limiting pin (5) is slidably engaged with the limiting groove (401).

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