Horizontal soft and hard sealing semi-ball valve capable of being maintained on line

Abstract

The utility model discloses a horizontal soft and hard sealing semi-ball valve capable of being maintained on line. The horizontal soft and hard sealing semi-ball valve comprises a valve body and a semi-ball body. The left side and the right side of the valve body are provided with fixing connectors. The hemisphere is arranged in the cavity of the valve body, a first sealing part and a second sealing part are arranged at the position of a fixed connector of the hemisphere, a first annular protrusion and a second annular protrusion are arranged on the cambered surface of the hemisphere, and the second annular protrusion and the valve rod are coaxially arranged. The second sealing piece tightly abuts against the second annular protrusion, so that sealing during water inflow and closing of the ball body is achieved, the spring abuts against the second sealing piece, the second sealing piece tightly abuts against the second annular protrusion, sealing degree is increased, friction of the ball body is reduced, and when the ball body moves from the closing position to the opening position, sealing is achieved. Liquid and particle impurities can flow on the upper face, the lower face and the periphery of the ball body, the contact area between the sealing piece and the ball body is minimum, friction force is small, abrasion of the ball body can be reduced, and torque generated when the ball body rotates can also be reduced.

Description

Technical Field

[0001] The utility model relates to the field of semi-spherical valves, and particularly relates to a horizontal hard and soft seal semi-spherical valve that can be repaired online. Background Art

[0002] The semi-spherical valve is a new type of valve developed to solve the technical problems of transporting two-phase mixed flow media such as solutions and slurries. The successful development of the semi-spherical valve provides a reliable control valve for the solution process flows in industrial departments such as chemical industry, petroleum, gas, metallurgy, and electronics, which are prone to precipitation, scaling, and precipitation, affecting the process, and provides a new and excellent product for improving the level of industrial management equipment in China. In order to ensure the good sealing performance of the semi-spherical valve, a sealing ring is installed on the semi-spherical valve. As the use time increases, the sealing ring will age and wear, eventually resulting in a decline in the sealing performance of the semi-spherical valve. Therefore, the sealing ring needs to be replaced regularly. However, for some large semi-spherical valves, due to their large volume and heavy single weight of the parts, usually multiple people need to work together to disassemble the parts and then replace the sealing ring, and the maintenance disassembly process is relatively troublesome. Content of the Utility Model

[0003] An object of the utility model is to provide a horizontal hard and soft seal semi-spherical valve that can be repaired online to solve at least one of the above technical problems.

[0004] A further object of the utility model is to avoid the wear of the sphere and prevent the leakage of the sealing surface.

[0005] Another further object of the utility model is to improve the service life of the valve body.

[0006] Specifically, the utility model provides a horizontal hard and soft seal semi-spherical valve that can be repaired online, including a valve body, and fixed interfaces are arranged on the left and right sides of the valve body;

[0007] A semi-sphere is arranged in the cavity of the valve body, and a first sealing part and a second sealing part are arranged at the semi-sphere and the fixed interface. An first annular protrusion and a second annular protrusion are arranged on the arc surface of the semi-sphere, and the second annular protrusion is coaxially arranged with the valve stem.

[0008] Further, the first sealing part includes: a first spring and a first sealing member, the first spring is connected with the first sealing member, and the first sealing member is correspondingly arranged with the second annular protrusion;

[0009] A second sealing part, the second sealing part includes a second spring and a second sealing member, the second spring is connected with the second sealing member, the second spring is installed on the sealing member, and the second sealing member is correspondingly arranged with the first annular protrusion.

[0010] Further, the fixed interface includes a first fixed interface and a second fixed interface, and the first fixed interface and the second fixed interface have the same structure.

[0011] Further, the first fixed interface and the second fixed interface are connected by a plurality of fixing rods.

[0012] Further, the first annular protrusion has an extension portion extending inwardly, the extension portion is provided with a fixing hole, and a fixing member for inserting the hemispherical body is disposed in the fixing hole.

[0013] Technical effects and advantages of the present utility model:

[0014] In the present utility model, by providing a first annular protrusion coaxial with the valve stem on the upper part of the sphere, impurities are prevented from entering the valve body through the gap of the valve stem. When the valve body is opened and closed, the pressure generated by the first spring always acts on the first seal, so that the first seal always tightly abuts against the first annular protrusion to prevent impurities from entering the valve body, thereby preventing impurities from affecting the rotation of the sphere and the sealing performance of the ball valve; the second seal tightly abuts against the second annular protrusion, thereby realizing the sealing when the sphere is in the water inlet and closed states. The spring abuts against the second seal, so that the second seal tightly abuts against the second annular protrusion, thereby increasing the sealing degree and reducing the friction of the sphere. It should be noted that when the sphere moves from the closed position to the open position, liquid and particulate impurities will flow on the upper and lower surfaces and around the sphere, and the contact area between the seal and the sphere is minimized, so the friction force is small, which can reduce the wear of the sphere and also reduce the torque when the sphere rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but non-limiting manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the present utility model.

[0017] Figure 2 is the present utility model Figure 1 partial enlarged structural schematic diagram of A in.

[0018] Figure 3 is a schematic structural diagram of the ball valve of the present utility model.

[0019] Figure 4 is a schematic structural diagram of the valve body of the present utility model in the open state.

[0020] In the figure: 1. First fixed interface; 2. Second fixed interface; 3. Valve stem; 4. Fixed shaft; 5. Hemisphere; 6. First sealing part, 601. First spring, 602. First seal, 6021. Pressing ring, 6022. Sealing ring, 6023. Rubber ring, 603. First annular protrusion; 7. Second sealing part, 701. Second spring, 702. Second seal, 703. Second annular protrusion; 8. Extension part, 801. Fixed hole; 9. Lever. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Figure 1 It is a schematic structural diagram of the present invention. Figure 2 For the present invention Figure 1 Partial enlarged structural diagram of A in the present invention. Figure 3 It is a schematic structural diagram of the hemispherical valve of the present invention. Figure 4 It is a schematic structural diagram of the valve body opening of the present invention.

[0023] The solution of this embodiment provides a horizontal hard and soft seal hemispherical valve that can be repaired online, including a valve body and a hemisphere 5. Fixed interfaces are provided on the left and right sides of the valve body; the hemisphere 5 is arranged in the cavity of the valve body, and a first sealing part 6 and a second sealing part 7 are arranged at the fixed interface of the hemisphere 5. A first annular protrusion 603 and a second annular protrusion 703 are arranged on the arc surface of the hemisphere 5, and the second annular protrusion 703 is coaxially arranged with the valve stem 3 and the fixed shaft 4.

[0024] It should be further noted that the first sealing part 6 includes: a first spring 601 and a first seal 602. The first spring 601 and the first seal 602 are connected, and the first seal 602 is correspondingly arranged with the second annular protrusion 703;

[0025] For the second sealing part 7, the second sealing part 7 includes a second spring 701 and a second seal 702. The second spring 701 and the second seal 702 are connected, the second spring 701 is installed on the seal, and the second seal 702 is correspondingly arranged with the first annular protrusion 603. It should be noted that the first sealing part 6 and the second sealing part 7.

[0026] It should be further noted that the fixed interface includes a first fixed interface 1 and a second fixed interface 2, and the first fixed interface 1 and the second fixed interface 2 have the same structure.

[0027] It should be further noted that the first fixed interface 1 and the second fixed interface 2 are connected by a plurality of fixing rods.

[0028] It should be further noted that the first annular protrusion 603 has an extension portion 8 extending inwardly, the extension portion 8 is provided with a fixing hole 801, and a fixing member for inserting the hemispherical body 5 is arranged in the fixing hole 801. By disassembling the fixing member, it is convenient to replace the first annular protrusion 603.

[0029] It should be further noted that the second sealing member 702 and the first sealing member 602 have the same structure. The second sealing member 702 includes a pressing ring 6021, a sealing ring 6022, and a wear-resistant rubber ring 6023. The sealing ring 6022 is located between the rubber ring 6023 and the pressing ring 6021, and the pressing ring 6021 is fixedly connected to the second spring 701.

[0030] The working principle of the present utility model:

[0031] When in use, a first annular protrusion 603 coaxial with the valve stem 3 is arranged on the upper part of the sphere to prevent impurities from entering the valve body through the gap of the valve stem 3. When the valve body is opened and closed, the pressure generated by the first spring 601 always acts on the first sealing member 602, so that the first sealing member 602 always tightly abuts against the first annular protrusion 603 to prevent impurities from entering the valve body, thereby preventing impurities from affecting the rotation of the sphere and the sealing performance of the ball valve; the second sealing member 702 tightly abuts against the second annular protrusion 703, thereby realizing the sealing when the sphere is in the water inlet and closed states. The spring abuts against the second sealing member 702, so that the second sealing member 702 tightly abuts against the second annular protrusion 703, thereby increasing the sealing degree and reducing the friction of the sphere at the same time. It should be noted that when the sphere is moved from the closed position to the open position by the lever 9, the liquid and particulate impurities will flow on the upper and lower surfaces and around the sphere. There is a minimum contact area between the sealing member and the sphere, so the friction force is small, which can reduce the wear of the sphere and also reduce the torque when the sphere rotates.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A horizontal soft and hard sealing hemispherical valve that can be maintained online, characterized in that: include, A valve body, wherein fixed interfaces are arranged on the left and right sides of the valve body; A hemispherical body (5), wherein the hemispherical body (5) is arranged in the cavity of the valve body, and a first sealing portion (6) and a second sealing portion (7) are arranged at the hemispherical body (5) and the fixed interface, and a first annular protrusion (603) and a second annular protrusion (703) are arranged on the arc surface of the hemispherical body (5), and the second annular protrusion (703) is arranged coaxially with the valve stem (3).

2. The horizontal soft and hard sealing hemispherical valve capable of online maintenance according to claim 1, characterized in that: The first sealing portion (6) comprises: a first spring (601) and a first sealing member (602), wherein the first spring (601) and the first sealing member (602) are connected, and the first sealing member (602) is arranged corresponding to the second annular protrusion (703); A second sealing part (7), the second sealing part (7) comprises a second spring (701) and a second sealing member (702), the second spring (701) and the second sealing member (702) are connected, the second spring (701) is installed on the fixed interface, and the second sealing member (702) is arranged corresponding to the first annular protrusion (603).

3. The horizontal soft and hard sealing hemispherical valve capable of online maintenance according to claim 1, characterized in that: The fixed interface comprises a first fixed interface (1) and a second fixed interface (2), and the first fixed interface (1) and the second fixed interface (2) have the same structure.

4. The horizontal soft and hard sealing hemispherical valve capable of online maintenance according to claim 3 is characterized in that: The first fixing interface (1) and the second fixing interface (2) are connected via a plurality of fixing rods.

5. The horizontal soft and hard sealing hemispherical valve capable of online maintenance according to claim 1, characterized in that: The first annular protrusion (603) has an extension portion (8) extending inwardly, the extension portion (8) is provided with a fixing hole (801), and a fixing piece inserted into the hemispherical body (5) is arranged in the fixing hole (801).

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