An eccentric hemispherical valve

Abstract

This utility model belongs to the field of valve technology, and in particular to an eccentric hemispherical valve, including a hemispherical valve body. A vertical pipe is connected to and fixed to the top of the hemispherical valve body. A valve stem is provided inside the hemispherical valve body, and the vertical pipe is sleeved on the valve stem. The top of the valve stem extends above the vertical pipe. This utility model uses a pull ring to move a corresponding stop block via a flexible steel rope. During the movement, the stop block stretches a corresponding first spring. Simultaneously, the stop block causes a locking pin to separate from one of the multiple fixing slots. Then, the valve stem is rotated, causing the ball inside the hemispherical valve body to rotate. After rotation, the tension on the pull ring is released, and the first spring, which was in a stretched state, returns to its original position. Under the action of the first spring's own elastic force, the first spring, through the stop block, causes the corresponding locking pin to engage with one of the multiple fixing slots, thereby fixing and locking the rotated valve stem and preventing accidental rotation that could open the hemispherical valve body.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an eccentric hemispherical valve. Background Technology

[0002] The eccentric hemispherical valve is a relatively new type of ball valve. It possesses unique advantages due to its structure, such as frictionless switching, wear-resistant seals, and low opening and closing torque. This allows for a smaller actuator size. When equipped with a multi-turn electric actuator, it can achieve both medium regulation and tight shut-off. It is widely applicable to applications requiring strict shut-off, such as those in the petroleum, chemical, and urban water supply and drainage industries.

[0003] However, some existing eccentric hemispherical valves cannot effectively lock and limit the position after the opening and closing rotation is completed, thus preventing accidental rotation from opening the equipment. Therefore, we propose an eccentric hemispherical valve to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an eccentric hemispherical valve, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] An eccentric hemispherical valve includes a hemispherical valve body. A vertical pipe is connected to and fixed to the top of the hemispherical valve body. A valve stem is provided inside the hemispherical valve body. The vertical pipe is sleeved on the valve stem. The top end of the valve stem extends above the vertical pipe. Multiple fixing grooves are formed in a ring on the valve stem. A support ring is fixedly connected to the top end of the vertical pipe. Two rectangular blocks are welded to the top of the support ring. A locking pin is provided on the rectangular block. The locking pin engages with one of the fixing grooves. A stop block is welded to the end of the locking pin. A first spring is fixedly connected between one side of the stop block and one side of the corresponding rectangular block. The first spring is movably sleeved on the corresponding locking pin. Two fixed pulleys are rotatably connected to the top of the support ring. A flexible steel rope is fixedly connected to the other side of the stop block. A pull ring is slidably connected to the vertical pipe. The end of the flexible steel rope passes around one side of the corresponding fixed pulley and extends to the bottom of the support ring, where it is fixedly connected to the top of the pull ring.

[0009] Furthermore, two T-shaped rods are welded to the bottom of the support ring, and the T-shaped rods are slidably connected to the pull ring.

[0010] Furthermore, a second spring is fixedly connected between the bottom inner wall of the T-shaped rod and the bottom inner wall of the pull ring, and the second spring is movably sleeved on the corresponding T-shaped rod.

[0011] Furthermore, valve body branch pipes are connected and fixed on both sides of the hemispherical valve body, and flanges are fixedly connected to the ends of the valve body branch pipes.

[0012] Furthermore, the rectangular block is provided with a guide hole, and the rectangular block is slidably connected to the corresponding locking pin through the guide hole.

[0013] Furthermore, the support ring has two circular holes, through which it is slidably connected to the corresponding flexible steel rope.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides an eccentric hemispherical valve, which has the following beneficial effects:

[0016] This invention utilizes a pull ring to move a corresponding stop block via a flexible steel rope. During this movement, the stop block stretches the corresponding first spring. Simultaneously, the stop block causes a locking pin to separate from one of the multiple fixing slots. Next, the valve stem is rotated, causing the ball inside the hemispherical valve body to rotate. After rotation, the tension on the pull ring is released, and the first spring, which was in a stretched state, returns to its original position. Under the action of its own elastic force, the first spring, through the stop block, causes the corresponding locking pin to engage with one of the multiple fixing slots, thereby locking the rotated valve stem in place and preventing accidental opening of the hemispherical valve body. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the inclined three-dimensional structure of this utility model;

[0019] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the valve stem of this utility model.

[0021] In the diagram: 1. Hemispherical valve body; 2. Vertical pipe; 3. Valve stem; 4. Fixing groove; 5. Support ring; 6. Rectangular block; 7. Locking pin; 8. Stop block; 9. First spring; 10. Fixed pulley; 11. Flexible steel rope; 12. Pull ring; 13. T-shaped rod; 14. Second spring; 15. Valve body branch pipe; 16. Flange. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] like Figure 1-4 As shown, an embodiment of this utility model discloses an eccentric hemispherical valve, comprising a hemispherical valve body 1, a vertical pipe 2 connected and fixed to the top of the hemispherical valve body 1, a valve stem 3 provided inside the hemispherical valve body 1, the vertical pipe 2 sleeved on the valve stem 3, the top end of the valve stem 3 extending above the vertical pipe 2, multiple fixing grooves 4 annularly formed on the valve stem 3, a support ring 5 fixedly connected to the top end of the vertical pipe 2, two rectangular blocks 6 welded to the top of the support ring 5, a locking pin 7 provided on the rectangular block 6, the locking pin 7 engaging with one of the fixing grooves 4, a stop block 8 welded to the end of the locking pin 7, a first spring 9 fixedly connected between one side of the stop block 8 and one side of the corresponding rectangular block 6, the first spring 9 movably sleeved on the corresponding locking pin 7, two fixed pulleys 10 rotatably connected to the top of the support ring 5, a flexible steel rope 11 fixedly connected to the other side of the stop block 8, and a pull ring slidably connected to the vertical pipe 2. 12. The end of the flexible steel rope 11 passes around one side of the corresponding fixed pulley 10 and extends to the bottom of the support ring 5 and is fixedly connected to the top of the pull ring 12. When the hemispherical valve body 1 is opened, the pull ring 12 is pulled and the corresponding stop 8 is moved through the flexible steel rope 11. During the movement, the stop 8 stretches the corresponding first spring 9. At the same time, the stop 8 causes the locking pin 7 to separate from one of the multiple fixing slots 4. Then, the valve stem 3 is rotated. The valve stem 3 causes the ball inside the hemispherical valve body 1 to rotate. After rotation, the tension on the pull ring 12 is released. At this time, the first spring 9, which is in a stretched state, returns to its original position. Under the action of the elastic force of the first spring 9, the first spring 9 drives the corresponding locking pin 7 through the stop 8 to engage with one of the multiple fixing slots 4, thereby fixing and locking the rotated valve stem 3 to prevent accidental rotation and opening of the hemispherical valve body 1.

[0025] In some embodiments, two T-shaped rods 13 are welded to the bottom of the support ring 5. The T-shaped rods 13 are slidably connected to the pull ring 12, and the T-shaped rods 13 serve as a limiting element.

[0026] In some embodiments, a second spring 14 is fixedly connected between the bottom inner wall of the T-shaped rod 13 and the bottom inner wall of the pull ring 12, and the second spring 14 is movably sleeved on the corresponding T-shaped rod 13.

[0027] In some embodiments, valve body branch pipes 15 are connected and fixed on both sides of the hemispherical valve body 1, and flanges 16 are fixedly connected to the ends of the valve body branch pipes 15. The flanges 16 serve the purpose of installation.

[0028] In some embodiments, a guide hole is provided on the rectangular block 6, and the rectangular block 6 is slidably connected to the corresponding locking pin 7 through the guide hole.

[0029] In some embodiments, the support ring 5 has two circular holes, and the support ring 5 is slidably connected to the corresponding flexible steel rope 11 through the circular holes. The flexible steel rope 11 serves as a connection.

[0030] Working principle or structural principle: When in use, when the hemispherical valve body 1 is opened, the pull ring 12 is pulled. The pull ring 12 slides on the T-shaped rod 13 and compresses the second spring 14. The pull ring 12 drives the corresponding stop block 8 to move through the flexible steel rope 11. During the movement, the stop block 8 stretches the corresponding first spring 9. At the same time, the stop block 8 drives the locking pin 7 to separate from one of the multiple fixing slots 4. Then, the valve stem 3 is rotated, and the valve stem 3 drives the ball inside the hemispherical valve body 1 to rotate. After rotation, the tension on the pull ring 12 is released. At this time, the first spring 9, which was in a stretched state, returns to its original position. Under the action of the elastic force of the first spring 9, the first spring 9 drives the corresponding locking pin 7 through the stop block 8 to engage with one of the multiple fixing slots 4, thereby fixing and locking the rotated valve stem 3 to prevent accidental rotation and opening of the hemispherical valve body 1. It can be connected to the external connecting pipe through the flange 16.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An eccentric hemispherical valve, comprising a hemispherical valve body (1), characterized in that: The top of the hemispherical valve body (1) is connected to and fixed with a vertical pipe (2). A valve stem (3) is provided inside the hemispherical valve body (1). The vertical pipe (2) is sleeved on the valve stem (3). The top end of the valve stem (3) extends to the top of the vertical pipe (2). Multiple fixing grooves (4) are provided in a ring on the valve stem (3). A support ring (5) is fixedly connected to the top end of the vertical pipe (2). Two rectangular blocks (6) are welded to the top of the support ring (5). A locking pin (7) is provided on the rectangular block (6). The locking pin (7) is engaged with one of the fixing grooves (4). 7) is welded with a stop block (8). A first spring (9) is fixedly connected between one side of the stop block (8) and one side of the corresponding rectangular block (6). The first spring (9) is movably sleeved on the corresponding locking pin (7). Two fixed pulleys (10) are rotatably connected to the top of the support ring (5). A flexible steel rope (11) is fixedly connected to the other side of the stop block (8). A pull ring (12) is slidably connected to the vertical pipe (2). The end of the flexible steel rope (11) passes around one side of the corresponding fixed pulley (10) and extends to the bottom of the support ring (5) and is fixedly connected to the top of the pull ring (12).

2. The eccentric hemispherical valve according to claim 1, characterized in that: Two T-shaped rods (13) are welded to the bottom of the support ring (5), and the T-shaped rods (13) are slidably connected to the pull ring (12).

3. An eccentric hemispherical valve according to claim 2, characterized in that: A second spring (14) is fixedly connected between the bottom inner wall of the T-shaped rod (13) and the bottom inner wall of the pull ring (12), and the second spring (14) is movably sleeved on the corresponding T-shaped rod (13).

4. An eccentric hemispherical valve according to claim 3, characterized in that: Both sides of the hemispherical valve body (1) are connected and fixed with valve body branch pipes (15), and the ends of the valve body branch pipes (15) are fixedly connected with flanges (16).

5. An eccentric hemispherical valve according to claim 4, characterized in that: The rectangular block (6) has a guide hole, and the rectangular block (6) is slidably connected to the corresponding locking pin (7) through the guide hole.

6. An eccentric hemispherical valve according to claim 5, characterized in that: The support ring (5) has two circular holes, and the support ring (5) is slidably connected to the corresponding flexible steel rope (11) through the circular holes.

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