Hard sealing fixed ball valve

Abstract

The utility model provides a hard sealing fixed ball valve, which relates to the technical field of fluid control and comprises a spherical valve body, a ball valve and a valve rod, the front end and the rear end of the spherical valve body are connected with the valve body, the upper end of the spherical valve body is connected with a connecting pipe, and magnetic rings B are arranged in the positions, close to an outlet, of the front end and the rear end of the spherical valve body. The valve rod penetrates through the connecting pipe, the lower end of the valve rod penetrates into the ball valve and is fixedly connected with the ball valve, the magnetic rings A arranged in the movable check blocks correspond to the magnetic rings B arranged in the front and back of the spherical valve body, and the small connecting rods arranged at the left end and the right end of the ball valve penetrate into the two sets of movable check blocks. The two sets of magnetic rings A attract the two sets of magnetic rings B. The two sets of movable check blocks are tightly attached to the surfaces of the inner sides of the movable check blocks through the small connecting rods, sealing reliability is improved, and the problem that the sealing effect of an existing hard sealing fixed ball valve is poor than that of a soft sealing ball valve is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid control, and more specifically, particularly relates to a hard-sealed fixed ball valve. Background Art

[0002] The hard-sealed fixed ball valve realizes the on-off control of fluid by rotating the ball. When the valve is in the closed state, the ball fits tightly with the valve seat to form a completely closed sealing structure, thereby preventing the fluid from passing through. This design ensures the sealing performance of the valve in the closed state and effectively prevents fluid leakage. When the valve needs to be opened to allow the fluid to pass through, by rotating the ball, the fluid passage becomes unobstructed. This unique design makes the hard-sealed ball valve have the advantages of quick opening and closing, small fluid resistance, and reliable sealing performance.

[0003] Based on the above, the hard-sealed fixed ball valve is simple and quick to use, and is also suitable for use under harsh working conditions such as high-temperature and high-pressure water, steam, petroleum, coal, fiber, viscous and corrosive media, and particulate media. However, compared with soft seals, due to reasons such as the materials used, the sealing effect of the hard-sealed fixed ball valve is not as reliable as that of the soft-sealed ball valve. Therefore, a new type of hard-sealed fixed ball valve is now needed. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a hard-sealed fixed ball valve to solve the problem that the sealing effect of the existing hard-sealed fixed ball valve is not as reliable as that of the soft-sealed ball valve.

[0005] The hard-sealed fixed ball valve of the utility model is achieved by the following specific technical means:

[0006] A hard-sealed fixed ball valve includes a spherical valve body, a ball valve, and a valve stem;

[0007] Both ends of the spherical valve body are connected with a valve body, the upper end of the spherical valve body is connected with a connecting pipe, the valve stem passes through the connecting pipe, a thin isolation ring is sleeved at a position near the lower end of the valve stem, a thick isolation ring is sleeved at a position near the upper end of the valve stem, and a handle is connected to the upper end of the valve stem. Inside the spherical valve body near the outlet at both ends of the spherical valve body, a magnetic ring B is provided. The ball valve is placed inside the spherical valve body, and the lower end of the valve stem penetrates into the ball valve and is fixedly connected with the ball valve.

[0008] Further, movable stoppers are connected to both left and right ends of the ball valve, and magnetic ring A is provided inside the two movable stoppers.

[0009] Further, magnetic ring A inside the movable stopper corresponds to magnetic ring B provided inside the spherical valve body at the front and back after the valve is closed.

[0010] Further, small connecting rods are provided at the left and right ends of the ball valve, and two groups of movable connecting rods penetrate into two groups of movable stoppers.

[0011] Further, the spherical valve body is provided with a round hole, and the round hole penetrates through the front and rear ends of the spherical valve body and is smaller than the round hole of the valve body.

[0012] Further, the ball valve is provided with a round hole passing through the ball valve and having the same size as the round hole on the spherical valve body.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. By setting the round hole of the spherical valve body to be the same size as that of the ball valve and slightly smaller than the round hole on the valve body, when the valve is closed, the gap between the ball valve and the spherical valve body is avoided, and the reliability of sealing is improved.

[0015] 2. By arranging the magnetic ring A inside the movable stopper and corresponding to the magnetic ring B provided inside the front and rear of the spherical valve body, and small connecting rods are provided at the left and right ends of the ball valve and penetrate into two groups of movable stoppers. When the valve is closed, the two magnetic rings A are attracted to one magnetic ring B respectively, and the two movable stoppers are tightly attached to the inner surface of the movable stopper through the small connecting rods, improving the reliability of sealing. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 is a schematic structural diagram of the utility model when the valve is opened.

[0018] Figure 3 is a cross-sectional structural diagram of the ball valve and the movable stopper of the utility model.

[0019] Figure 4 is a cross-sectional structural diagram of the utility model when the valve is opened.

[0020] In the figure, the corresponding relationship between the component names and the drawing reference numerals is as follows:

[0021] 1. Valve body; 2. Spherical valve body; 3. Ball valve; 4. Valve stem; 5. Fine isolation ring; 6. Coarse isolation ring; 7. Handle; 8. Movable stopper; 9. Magnetic ring A; 10. Magnetic ring B; 11. Connecting pipe; 12. Movable connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes in detail the embodiments of the utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0023] Embodiment:

[0024] As shown in the attached Figure 1 to the attached Figure 4 as follows:

[0025] The utility model provides a hard-sealed fixed ball valve, which includes a spherical valve body 2, a ball valve 3, and a valve stem 4;

[0026] The front and rear ends of the spherical valve body 2 are connected to the valve body 1, the upper end of the spherical valve body 2 is connected to a connecting pipe 11, the valve stem 4 passes through the connecting pipe 11, a thin isolation ring 5 is sleeved at a position near the lower end of the valve stem 4, a thick isolation ring 6 is sleeved at a position near the upper end of the valve stem 4, and the upper end of the valve stem 4 is connected to a handle 7. At positions near the outlet at the front and rear ends of the spherical valve body 2, a magnetic ring B10 is arranged inside. The ball valve 3 is placed inside the spherical valve body 2, and the lower end of the valve stem 4 penetrates into the ball valve 3 and is fixedly connected to the ball valve 3.

[0027] Among them, as Figure 3 shown, the left and right ends of the ball valve 3 are connected to movable stoppers 8, and magnetic rings A9 are arranged inside the two groups of movable stoppers 8. The magnetic rings A9 inside the movable stoppers 8 correspond to the magnetic rings B10 arranged inside the front and rear of the spherical valve body 2 after the valve is closed. When the valve is closed, the magnetic rings A9 and B10 attract each other, improving the sealing reliability.

[0028] Among them, as Figure 3 shown, small connecting rods 12 are arranged at the left and right ends of the ball valve 3, and the two groups of movable connecting rods 12 penetrate into the two groups of movable stoppers 8. When the magnetic rings A9 and B10 attract each other, the two groups of movable stoppers 8 are made to closely adhere to the inner surface of the spherical valve body 2 through the small connecting rods 12, increasing the sealing reliability.

[0029] Among them, as Figure 2 shown, the spherical valve body 2 is provided with a round hole, and the round hole penetrates through the front and rear ends of the spherical valve body 2 and is slightly smaller than the round hole of the valve body 1. The ball valve 3 is provided with a round hole passing through the ball valve 3 and having the same size as the round hole on the spherical valve body 2. Since the round hole of the spherical valve body 2 is slightly smaller, it is avoided that there will be gaps when the ball valve is closed.

[0030] The specific usage method and function of this embodiment:

[0031] As shown in the attached Figure 1 to the attached Figure 4As shown in the figure, in the present utility model, by rotating the handle 7, the ball valve 3 inside the spherical valve body 2 is driven to control the opening and closing of the valve of the present utility model. When closing the valve, the movable stoppers 8 at both left and right ends of the ball valve 3 block the outlets at both front and rear ends of the spherical valve body 2. The movable connecting rods 12 at both left and right ends of the ball valve 3 enable the two groups of movable stoppers 8 to perform a little stretching movement. When closing the valve, the magnetic ring B10 in the outlets at both front and rear ends of the spherical valve body 2 attracts the magnetic ring A9 in the movable stopper 8, and through the two groups of movable connecting rods 12, the two groups of movable stoppers 8 are closely attached to the inner surface of the outlets at both front and rear ends of the spherical valve body 2, achieving the purpose of sealing.

[0032] Details not described in the present utility model are all well-known technologies to those skilled in the art.

Claims

1. A hard-seal fixed ball valve, characterized in that: It comprises a spherical valve body (2), a ball valve (3) and a valve stem (4); The front and rear ends of the spherical valve body (2) are connected to the valve body (1), the upper end of the spherical valve body (2) is connected to the connecting pipe (11), the valve stem (4) passes through the connecting pipe (11), and a thin isolating ring (5) is mounted near the lower end of the valve stem (4), a thick isolating ring (6) is mounted near the upper end of the valve stem (4), and the upper end of the valve stem (4) is connected to a handle (7), and a magnetic ring B (10) is provided inside the front and rear ends of the spherical valve body (2) near the outlet, and the ball valve (3) is placed in the spherical valve body (2), and the lower end of the valve stem (4) penetrates into the ball valve (3) and is fixedly connected to the ball valve (3).

2. A hard-seal fixed ball valve according to claim 1, characterized in that: The left and right ends of the ball valve (3) are connected to movable blocks (8), and magnetic rings A (9) are arranged inside the two sets of movable blocks (8).

3. A hard-seal fixed ball valve according to claim 2, characterized in that: The two groups of magnetic rings A (9) are inside the movable stoppers (8), and after the valve is closed, the magnetic rings A (9) correspond to the magnetic rings B (10) provided inside the front and rear of the spherical valve body (2).

4. A hard-seal fixed ball valve as claimed in claim 2, characterized in that: The left and right ends of the ball valve (3) are provided with movable connecting rods (12), and the two sets of movable connecting rods (12) penetrate into the two sets of movable stoppers (8).

5. A hard-seal fixed ball valve according to claim 1, characterized in that: The spherical valve body (2) is provided with a circular hole, and the circular hole passes through the front and rear ends of the spherical valve body (2) and is smaller than the circular hole of the valve body (1).

6. A hard-seal fixed ball valve as claimed in claim 5, characterized in that: The ball valve (3) is provided with a circular hole which passes through the ball valve (3) and has the same size as the circular hole on the spherical valve body (2).

Images