A bidirectional double-seal ball valve ball

Abstract

This utility model relates to the field of ball valve technology, and more particularly to a bidirectional double-seal ball valve body, comprising two symmetrically arranged hemispheres. The planes of the two hemispheres are arranged opposite each other to form a complete sphere, and the two hemispheres are detachably fixed together. An arc-shaped receiving groove is formed in the middle of the side of the two hemispheres that are relatively close to each other. The frontal projection of the receiving groove is elliptical, and the axis of the receiving groove is consistent with the radial direction of the hemisphere. An arc-shaped through groove is formed at the end of each receiving groove, and the through groove penetrates the hemisphere. Several spiral-shaped guide plates are installed on the inner wall of the receiving groove, and the guide plates are arranged at intervals along the inner wall of the receiving groove. This utility model, by setting spiral guide plates in the receiving groove, increases the liquid flow path and accumulates more potential energy, thereby increasing the flow velocity at the outflow and enhancing the conveying efficiency. The elliptical receiving groove design forms a cavity for temporary accumulation of potential energy, further increasing the kinetic energy of the liquid at the outflow.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a bidirectional double-seal ball valve ball. Background Technology

[0002] The bidirectional double-seal ball valve is a type of valve that combines the advantages of ball valves and butterfly valves, and is widely used in industries such as metallurgy, petroleum, chemical, mining, and power. It has bidirectional sealing capability, enabling effective sealing in both directions of media flow. The main structure of the bidirectional double-seal ball valve is similar to that of a butterfly valve, but the valve core is a partial ball, specifically a portion of the ball near the sealing surface.

[0003] In the use of bidirectional double-seal ball valves, a channel is provided on the ball body for liquid to pass through. When not in use, the ball can be rotated to close the valve. However, because the inner diameter of the pipes at both ends of this type of ball valve is fixed, the flow rate of the liquid within it is limited. It mainly relies on hydraulic strength to ensure the rate at which the liquid passes through the ball, but the rated pipe inner diameter also imposes this limitation. To address this, we propose a bidirectional double-seal ball valve ball. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a bidirectional double-sealing ball valve body.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bidirectional double-sealing ball valve body, comprising two symmetrically arranged hemispheres, the planes of the two hemispheres being arranged opposite each other to form a complete ball, and the two hemispheres being detachably fixed together;

[0006] An arc-shaped receiving groove is provided in the middle of the two hemispheres on the side that are relatively close to each other. The frontal projection of the receiving groove is elliptical, and the axis of the receiving groove is consistent with the radial direction of the hemisphere. An arc-shaped through groove is provided at the end of the receiving groove, and the through groove is set through the hemisphere.

[0007] Several spiral guide plates are installed on the inner wall of the receiving tank. The guide plates are arranged at intervals along the inner wall of the receiving tank, and the ends of the guide plates correspond to the through groove.

[0008] Preferably, a first through hole is provided at the relatively close edges of the two hemispheres, and a second through hole is provided at the end of the first through hole. The second through hole penetrates the outer wall of the hemisphere, and the frontal projection of the first through hole is located in the second through hole. A fixing bolt is installed in the first through hole, and the screw head of the fixing bolt is placed in the second through hole of one of the hemispheres. A nut is threaded onto the end of the fixing bolt and is placed in the second through hole of the other hemisphere.

[0009] Preferably, an annular limiting strip is installed on the side of the two hemispheres that are relatively far apart.

[0010] Preferably, an arc-shaped cut surface is provided at the edge between the through groove and the receiving groove.

[0011] Preferably, an arc-shaped fixing seat is coaxially mounted on the top of each hemisphere, a connecting shaft is placed on the inner side between two fixing seats, the connecting shaft is fixed to the fixing seat by fasteners, and a handle is installed on the top of the connecting shaft.

[0012] Preferably, the handle is disc-shaped, and a locking bolt is provided through the handle. The locking bolt is threadedly connected to the handle, and a rubber head is installed on the bottom of the locking bolt.

[0013] Preferably, at least one sealing ring is installed along the edge of each of the two hemispheres that are relatively close to each other.

[0014] The design scheme proposed in this utility model has the following beneficial effects in application:

[0015] 1. This utility model increases the liquid flow path and accumulates more potential energy by setting a spiral guide plate in the receiving tank, thereby increasing the flow rate when flowing out and enhancing the conveying efficiency. The elliptical receiving tank design forms a cavity for temporary accumulation of potential energy, further increasing the kinetic energy of the liquid when flowing out.

[0016] 2. This utility model consists of two detachable hemispheres fixed together by bolts to form a complete sphere, which facilitates the assembly, disassembly and maintenance of the sphere; while the fixing bolts and nuts are hidden in the second through hole to keep the surface of the sphere smooth and avoid interfering with the fluid or operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the hemispherical structure of this utility model;

[0020] Figure 4 This is a diagram illustrating the effect of using this utility model.

[0021] In the diagram: 1. Hemisphere; 2. Receiving groove; 3. Through groove; 4. Guide plate; 5. Connecting shaft; 6. Fixing base; 7. Handle; 8. First through hole; 9. Second through hole; 10. Fixing bolt; 11. Nut; 12. Limiting strip; 13. Locking bolt; 14. Rubber head. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example

[0024] Reference Figures 1-4 A bidirectional double-sealed ball valve ball includes two symmetrically arranged hemispheres 1, the planes of the two hemispheres 1 are arranged opposite each other to form a complete ball, and the two hemispheres 1 can be detachably fixed together.

[0025] Among them, such as Figure 1 and Figure 2 As shown, a first through hole 8 is provided at the relatively close edges of the two hemispheres 1, and a second through hole 9 is provided at the end of the first through hole 8. The second through hole 9 penetrates the outer wall of the hemisphere 1, and the frontal projection of the first through hole 8 is located in the second through hole 9. A fixing bolt 10 is installed in the first through hole 8. The screw head of the fixing bolt 10 is placed in the second through hole 9 of one of the hemispheres 1, and a nut 11 is threadedly connected to the end of the fixing bolt 10. The nut 11 is placed in the second through hole 9 of the other hemisphere 1. That is, the two hemispheres 1 are tightened and fixed together by the fixing bolt 10 and the nut 11. The screw head of the fixing bolt 10 and the nut 11 are both housed in the second through hole 9 to hide and store the screw head of the fixing bolt 10 and the nut 11, thus ensuring the smoothness of the outer wall of the hemisphere 1.

[0026] In order to ensure the sealing of the two hemispheres 1 after they are joined together, and to prevent liquid from flowing through the gap between the two hemispheres 1 after contacting the hemispheres 1, at least one sealing ring is installed along the relatively close edge of each of the two hemispheres 1. In actual use, the sealing ring can be set on one of the hemispheres 1, or sealing rings can be set on both hemispheres 1, and the sealing rings on the two hemispheres 1 are staggered.

[0027] like Figure 3 As shown, an arc-shaped receiving groove 2 is provided in the middle of the two hemispheres 1 that are relatively close to each other. The frontal projection of the receiving groove 2 is elliptical, and the axis of the receiving groove 2 is consistent with the radial direction of the hemisphere 1. An arc-shaped through groove 3 is provided at the end of the receiving groove 2. The through groove 3 is provided through the hemisphere 1. After the two hemispheres 1 are merged, a channel for liquid flow is formed in the middle position.

[0028] Specifically, such as Figure 1As shown, an arc-shaped fixing seat 6 is coaxially mounted on the top of each hemisphere 1. A connecting shaft 5 is placed on the inner side between two fixing seats 6. The connecting shaft 5 is fixed to the fixing seat 6 by fasteners. A handle 7 is installed on the top of the connecting shaft 5. In actual use, the hemispheres 1 are placed in the ball valve housing after being combined (e.g., ...). Figure 4 The ball valve housing is located at the position indicated by the middle arrow A, and the top of the connecting shaft 5 passes through the ball valve housing. The connecting shaft 5 is rotatably connected to the ball valve housing. The through groove 3 corresponds to the connecting pipes at both ends of the ball valve housing. During use, liquid enters from one of the connecting pipes. When the entire ball rotates to a position where the through groove 3 is opposite to the connecting pipe, the liquid can flow into the through groove 3 and then out from the other end of the through groove 3, thus allowing the liquid to pass smoothly through the ball valve. When the entire ball rotates to a position where the through groove 3 is offset from the connecting pipe, the solid outer wall of the hemisphere 1 will correspond to the connecting pipe. In addition, a sealing gasket is provided at the end of the connecting pipe, allowing the solid outer wall of the hemisphere 1 to make sealing contact with the connecting pipe, thereby achieving the isolation of the liquid.

[0029] In order to improve the sealing effect between the gasket on the connecting pipe and the hemisphere 1, annular limiting strips 12 are installed on the relatively far sides of the two hemispheres 1. In actual use, there are at least two limiting strips 12, which are arranged coaxially adjacent to each other. When the limiting strips 12 come into contact with the gasket of the connecting pipe, they will squeeze the gasket and deform it to embed it between the limiting strips 12, thereby improving the sealing effect between the hemisphere 1 and the gasket.

[0030] It should be noted that after the ball valve is switched on and off by turning the handle 7, the handle 7 is disc-shaped and a locking bolt 13 is installed through the handle 7. The locking bolt 13 is threadedly connected to the handle 7, and a rubber head 14 is installed on the bottom of the locking bolt 13. The locking bolt 13 can be rotated to reinforce the handle 7 and prevent accidental rotation of the handle 7 due to accidental contact.

[0031] like Figure 3 As shown, a number of spiral guide plates 4 are installed on the inner wall of the accommodating groove 2. The guide plates 4 are arranged at intervals along the inner wall of the accommodating groove 2, and the ends of the guide plates 4 correspond to the through groove 3.

[0032] Specifically, when the liquid enters the receiving tank 2, due to the elliptical shape of the receiving tank 2, the liquid can accumulate to a certain extent within the receiving tank 2, thereby forming a cavity that temporarily accumulates potential energy. This increases the potential energy of the liquid when it flows out of the receiving tank 2, and increases the flow rate of the liquid when it flows out. Moreover, the spiral arrangement of the guide plate 4 also allows the liquid to flow in a spiral shape along the guide plate 4 when it flows in the receiving tank 2, thereby increasing the flow path of the liquid. This allows the liquid to accumulate more potential energy when it flows out of the receiving tank 2, allowing the liquid to flow faster in the subsequent pipeline, thus improving the liquid transportation efficiency.

[0033] Furthermore, in order to ensure that the liquid can flow stably in and out of the receiving tank 2, such as... Figure 3 As shown, arc-shaped cut surfaces are provided at the edges between the through groove 3 and the receiving groove 2 to improve the smoothness of the liquid flowing from the receiving groove 2 into the through groove 3.

[0034] It should be noted that since the ball valve body is composed of two hemispheres 1, when manufacturing the ball valve body, the lost foam casting process can be used to manufacture the corresponding mold for production, so that the hemisphere 1 and the guide plate 4 can be integrally formed. Alternatively, it can be die-cast using forging molds, and then the receiving groove 2 can be formed by subsequent cutting, etc., and then the guide plate 4 can be installed in the receiving groove 2 by welding or other methods.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ball body for a bidirectional double-seal ball valve, characterized in that: It includes two symmetrically arranged hemispheres (1), the planes of the two hemispheres (1) are arranged opposite each other to form a complete sphere, and the two hemispheres (1) can be detached and fixed together; An arc-shaped receiving groove (2) is provided in the middle of the two hemispheres (1) on the side closer to each other. The frontal projection of the receiving groove (2) is elliptical, and the axis of the receiving groove (2) is consistent with the radial direction of the hemisphere (1). An arc-shaped through groove (3) is provided at the end of the receiving groove (2), and the through groove (3) is provided through the hemisphere (1). Several spiral guide plates (4) are installed on the inner wall of the receiving groove (2). The guide plates (4) are arranged at intervals along the inner wall of the receiving groove (2), and the ends of the guide plates (4) correspond to the through groove (3).

2. The ball of a bidirectional double-seal ball valve according to claim 1, characterized in that: A first through hole (8) is provided at the relatively close edges of the two hemispheres (1). A second through hole (9) is provided at the end of the first through hole (8). The second through hole (9) penetrates the outer wall of the hemisphere (1), and the frontal projection of the first through hole (8) is located in the second through hole (9). A fixing bolt (10) is installed in the first through hole (8). The screw head of the fixing bolt (10) is placed in the second through hole (9) of one of the hemispheres (1), and a nut (11) is threaded on the end of the fixing bolt (10). The nut (11) is placed in the second through hole (9) of the other hemisphere (1).

3. The ball of a bidirectional double-seal ball valve according to claim 1, characterized in that: An annular limiting strip (12) is installed on the side of the two hemispheres (1) that are relatively far apart.

4. The ball of a bidirectional double-seal ball valve according to claim 1, characterized in that: An arc-shaped cut surface is provided at the edge between the through groove (3) and the receiving groove (2).

5. The ball of a bidirectional double-seal ball valve according to claim 1, characterized in that: An arc-shaped fixing seat (6) is coaxially mounted on the top of each hemisphere (1). A connecting shaft (5) is placed on the inner side between two fixing seats (6). The connecting shaft (5) is fixed to the fixing seat (6) by fasteners. A handle (7) is installed on the top of the connecting shaft (5).

6. The ball of a bidirectional double-seal ball valve according to claim 5, characterized in that: The handle (7) is disc-shaped, and a locking bolt (13) is provided through the handle (7). The locking bolt (13) is threadedly connected to the handle (7), and a rubber head (14) is installed on the bottom of the locking bolt (13).

7. The ball of a bidirectional double-seal ball valve according to claim 1, characterized in that: At least one sealing ring is installed along the relatively close edge of each of the two hemispheres (1).

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