Sealing ball valve

Abstract

The utility model discloses a sealing ball valve which comprises a ball valve body, a valve ball and a sealing ring, the valve ball is arranged on the inner side of the ball valve body, the sealing ring is connected to the inner side of the ball valve body in an embedded mode, a supporting ring is arranged on one side of the sealing ring, and a supporting rod is fixedly connected to the surface of the supporting ring. The upper end and the lower end of the supporting ring are fixedly connected with fixing rings. By arranging a sealing ring and a fixing ring, the sealing ring can enhance the sealing performance of the valve ball and the interior of the valve body, liquid is prevented from entering a lead screw through the upper surface of the valve ball, leakage of the lead screw is avoided, and the situation that the sealing performance of the whole valve body is affected by leakage at the control lead screw can be avoided; and excessive liquid can be prevented from being accumulated on the upper surface of the valve ball, the liquid is prevented from permeating into the lead screw from the joint of the valve ball and the lead screw, then the liquid is prevented from leaking to the outside along the lead screw, and normal operation and overall sealing performance of the valve are ensured by effectively controlling flowing of the liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of sealed ball valves, in particular to a sealed ball valve. Background Art

[0002] Sealed ball valve is a commonly used valve type. Its structure mainly consists of a ball as the valve body. There is a hole inside the ball. The liquid flows through the rotation operation. The sealed ball valve can align or close the hole with the channel of the pipeline by rotating the ball, thereby realizing the opening or closing control of the fluid. However, when the existing sealed ball valve is actually used, the liquid may enter the valve body from the upper surface of the ball valve, causing the liquid to leak from the control screw to the outside. When the control screw leaks, it will affect the sealing of the entire valve body.

[0003] The implementation of the utility model aims to provide a sealing ball valve to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art mentioned in the background technology and proposes a sealing ball valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sealing ball valve comprises a ball valve body, a valve ball and a sealing ring, wherein a valve ball is provided on the inner side of the ball valve body, a sealing ring is embedded and connected on the inner side of the ball valve body, a support ring is provided on one side of the sealing ring, a support rod is fixedly connected to the surface of the support ring, and fixing rings are fixedly connected to the upper and lower ends of the support ring.

[0007] Preferably, the sealing ring and the support ring are both in annular shape, and the support rods are equidistantly arranged around the surface of the support ring, and the other side of the support rods is tightly fitted with the sealing ring.

[0008] Preferably, two drain ports are provided through the upper surface of the valve ball, and the angle between two lines formed by the centers of the two drain ports and the center of the valve ball is 90 degrees.

[0009] Preferably, a rotating shaft base is fixedly connected inside the drain outlet, and a rotating shaft is movably connected to the other side of the rotating shaft base, and a one-way valve disc is fixedly connected to the other side of the rotating shaft, and the one-way valve disc is circular as a whole.

[0010] Preferably, a limiting ring is provided at the other end, and the limiting ring is fixed to the arc strip on the inner wall of the drain outlet.

[0011] Preferably, the valve ball as a whole is a spherical valve body with openings on both sides, and the sealing ring fits tightly on the surface of the valve ball.

[0012] Preferably, a water inlet is penetrated at one end of the ball valve body, and a control screw is provided on the inner side of the ball valve body, and the control screw penetrates the ball valve body as a whole and is connected to the valve ball.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by arranging a sealing ring and a fixing ring, when the device is actually used, since the sealing ring is arranged on one side of the water inlet, when liquid enters the valve body through the water inlet, the sealing ring can enhance the sealing performance between the valve ball and the inside of the valve body, and prevent the liquid from entering the lead screw through the upper surface of the valve ball, causing leakage at the lead screw, so that the device can avoid leakage at the control lead screw that affects the sealing performance of the entire valve body.

[0015] 2. By setting the drain port and the one-way valve disc, when the sealing ring is deformed due to long-term impact, the liquid entering the upper surface of the valve ball can be discharged into the interior of the valve ball through the one-way valve, avoiding excessive liquid accumulation on the upper surface of the valve ball, preventing the liquid from penetrating into the interior of the screw from the connection between the valve ball and the screw, and then preventing the liquid from leaking to the outside along the screw. By effectively controlling the flow of liquid, the normal operation and overall sealing of the valve are ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a sealing ball valve proposed by the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the ball valve body;

[0018] Figure 3 for Figure 2 A is an enlarged schematic diagram of the structure;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the drainage outlet.

[0020] In the figure: 1. ball valve body; 2. water inlet; 3. control screw; 4. valve ball; 5. sealing ring; 6. support ring; 7. fixing ring; 8. support rod; 9. drain outlet; 10. one-way valve disc; 11. rotating shaft; 12. rotating shaft base; 13. limit ring. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Example

[0026] Reference Figure 1-4 A sealed ball valve comprises a ball valve body 1, a valve ball 4 and a sealing ring 5. The ball valve body 1 comprises a water inlet 2 and a water outlet. A control screw 3 is arranged at the upper end of the ball valve body 1, and a control rod is arranged on the surface of the control screw 3.

[0027] A valve ball 4 is provided on the inner side of the ball valve body 1, and a sealing ring 5 is embedded and connected to the inner side of the ball valve body 1. A support ring 6 is provided on one side of the sealing ring 5, and a support rod 8 is fixedly connected to the surface of the support ring 6. The sealing ring 5 and the support ring 6 are both in the shape of a circular ring, and the support rod 8 is equidistantly arranged around the surface of the support ring 6, and the other side of the support rod 8 is tightly fitted with the sealing ring 5. When liquid enters the upper surface of the valve ball 4, the sealing ring 5 can isolate the liquid on one side to prevent the liquid from entering the interior of the ball valve body 1 and the control screw 3. At the same time, the support ring 6 on one side of the sealing ring 5 can provide supporting force for the sealing ring 5 through the support rod 8, to prevent the sealing ring 5 from being subjected to excessive impact force, resulting in deformation and leakage, and at the same time improve the service life of the sealing ring 5.

[0028] The upper and lower ends of the support ring 6 are fixedly connected with a fixing ring 7. The fixing ring 7 as a whole is an annular block tightly fixed to the inner wall of the ball valve body 1. The valve ball 4 as a whole is a spherical valve body with openings on both sides, and the sealing ring 5 is tightly fitted on the surface of the valve ball 4. The support ring 6 is fixed to the inside of the ball valve body 1 through the fixing ring 7, and the inner rings of the fixing ring 7 and the sealing ring 5 are tightly fitted on the surface of the valve ball 4.

[0029] Two drain ports 9 are provided on the upper surface of the valve ball 4. The angle between the two lines formed by the centers of the two drain ports 9 and the center of the valve ball 4 is 90 degrees. Through this design, when the valve ball 4 rotates to open and close, since the maximum rotation angle of the valve ball 4 when opening and closing is 90 degrees, there is always a drain port 9 located on one side of the sealing ring 5 and the support ring 6 regardless of whether it is in the open or closed state.

[0030] A rotating shaft base 12 is fixedly connected to the inside of the drain outlet 9, and a rotating shaft 11 is movably connected to the other side of the rotating shaft base 12. A one-way valve disc 10 is fixedly connected to the other side of the rotating shaft 11, and the one-way valve disc 10 is circular as a whole. A limiting ring 13 is provided at the other end of the one-way valve disc 10, and the limiting ring 13 is fixed to the arc strip on the inner wall of the drain outlet 9. An arc spring is provided between the rotating shaft 11 and the rotating shaft base 12. When liquid passes through the drain outlet 9 from top to bottom, the one-way valve disc 10 inside the drain outlet 9 is rotated downward by the rotating shaft 11 to open, so that the liquid can pass through the drain outlet 9 from top to bottom. When liquid enters the bottom of the drain outlet 9, the bottom liquid impacts the one-way valve disc 10, and the one-way valve disc 10 presses upward against the bottom of the limiting ring 13 to prevent the one-way valve disc 10 from opening upward, causing the liquid in the valve ball 4 to be output to the upper surface of the valve ball 4 through the drain outlet 9.

[0031] A water inlet 2 is penetrated at one end of the ball valve body 1, and a control screw 3 is provided on the inner side of the ball valve body 1. The control screw 3 penetrates the ball valve body 1 as a whole and is connected to the valve ball 4, so that the staff can control the rotation and opening and closing of the valve ball 4 by rotating the control rod on the upper surface of the control screw 3.

[0032] Working principle: When using this device, the staff can control the valve ball 4 to rotate and open by rotating the control rod on the upper surface of the control screw 3. When liquid enters the upper surface of the valve ball 4, the sealing ring 5 can isolate the liquid on one side to prevent the liquid from entering the ball valve body 1 and the interior of the control screw 3. At the same time, the support ring 6 on one side of the sealing ring 5 can provide support for the sealing ring 5 through the support rod 8 to prevent the sealing ring 5 from being deformed and leaking due to excessive impact force, thereby improving the service life of the sealing ring 5. At the same time, the sealing ring 5 can enhance the sealing performance between the valve ball 4 and the interior of the ball valve body 1, preventing liquid from entering through the upper surface of the valve ball 4 The screw is inserted, causing leakage at the control screw 3. When liquid passes through the drain port 9 from top to bottom, the one-way valve disc 10 inside the drain port 9 is rotated downward by the rotating shaft 11 to open, allowing the liquid to pass through the drain port 9 from top to bottom. When liquid enters the bottom of the drain port 9, the bottom liquid impacts the one-way valve disc 10, and the one-way valve disc 10 presses upward against the bottom of the limit ring 13 to prevent the one-way valve disc 10 from opening upward and causing the liquid in the valve ball 4 to be output to the upper surface of the valve ball 4 through the drain port 9. At the same time, the liquid entering the upper surface of the valve ball 4 can be discharged into the inside of the valve ball 4 through the one-way valve 9 to avoid excessive liquid accumulating on the upper surface of the valve ball 4.

[0033] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

[0034] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Claims

1. A sealed ball valve, comprising a ball valve body (1), a valve ball (4) and a sealing ring (5), characterized in that: A valve ball (4) is provided on the inner side of the ball valve body (1), and a sealing ring (5) is embedded and connected to the inner side of the ball valve body (1). A support ring (6) is provided on one side of the sealing ring (5), and a support rod (8) is fixedly connected to the surface of the support ring (6). The upper and lower ends of the support ring (6) are fixedly connected to fixing rings (7).

2. A sealed ball valve according to claim 1, characterized in that: The sealing ring (5) and the support ring (6) are both annular, and the support rods (8) are equidistantly arranged around the surface of the support ring (6), and the other side of the support rods (8) is tightly fitted with the sealing ring (5).

3. A sealed ball valve according to claim 1, characterized in that: Two drainage openings (9) are provided through the upper surface of the valve ball (4), and the angle between two lines formed by the centers of the two drainage openings (9) and the center of the valve ball (4) is 90 degrees.

4. A sealed ball valve according to claim 3, characterized in that: The interior of the drain outlet (9) is fixedly connected to a rotating shaft base (12), and the other side of the rotating shaft base (12) is movably connected to a rotating shaft (11), and the other side of the rotating shaft (11) is fixedly connected to a one-way valve disc (10), and the one-way valve disc (10) is circular as a whole.

5. A sealed ball valve according to claim 4, characterized in that: A limiting ring (13) is provided at the other end of the one-way valve disc (10), and the limiting ring (13) is fixed to the arc strip on the inner wall of the drain outlet (9).

6. A sealed ball valve according to claim 1, characterized in that: The valve ball (4) is a spherical valve body with openings on both sides, and the sealing ring (5) is tightly fitted on the surface of the valve ball (4).

7. A sealed ball valve according to claim 1, characterized in that: One end of the ball valve body (1) is penetrated by a water inlet (2), and a control screw (3) is provided on the inner side of the ball valve body (1); the control screw (3) penetrates the ball valve body (1) as a whole and is connected to the valve ball (4).

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