Rotary knob heightened straight-through ball valve

Abstract

The utility model discloses a knob heightened straight-through ball valve, which relates to the technical field of straight-through ball valves and comprises a ball valve body, the left end of the ball valve body is provided with a water inlet, the right end of the ball valve body is connected with a connecting piece, a valve core is arranged in the ball valve body, and the left end and the right end of the valve core are respectively provided with two symmetrically arranged plugging rings. The upper end of the valve element is connected with a valve rod, the upper end of the valve rod is connected with a lengthening rod, the upper end of the lengthening rod is connected with a rotary knob cover, two symmetrically-arranged chamfers are arranged on the inner wall of each blocking ring, and rubber rings are arranged at the chamfers at the left end and the right end of each blocking ring. Meanwhile, the rubber rings are arranged on the plugging ring, when the valve element is installed, the rubber ring on one side abuts against the ball valve body and the connecting piece, the rubber ring on the other side abuts against the valve element, the sealing performance among the ball valve body, the connecting piece and the valve element is guaranteed, and water leakage is prevented.

Description

Technical Field

[0001] This utility model relates to the field of straight-through ball valve technology, specifically a knob-enhanced straight-through ball valve. Background Technology

[0002] With the development of Chinese society, ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceutical industry, water conservancy, power, municipal engineering, and steel, and occupy a pivotal position in the national economy.

[0003] A ball valve typically includes a valve body with an inlet and an outlet. Inside the valve body, a valve core rotates, with a through-hole. A valve stem is mounted on the outer wall of the valve core, extending through the valve body to the outside. Rotating the valve core controls whether the through-hole connects with the inlet and outlet.

[0004] Regarding the aforementioned technologies, when the outer wall of the valve core is damaged, resulting in leakage, people usually have to replace the entire valve body, leading to high maintenance costs. At the same time, the outer wall of the valve core is in rigid contact with the valve body. With the delay in use and the erosion of water, gaps will appear between the valve core and the valve body, resulting in leakage. Utility Model Content

[0005] To address the above problems, this utility model provides a knob-enhanced straight-through ball valve, thus solving the aforementioned issues.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a knob-enhanced straight-through ball valve, comprising a ball valve body, an inlet at the left end of the ball valve body, a connector at the right end of the ball valve body, a valve core inside the ball valve body, two symmetrically arranged sealing rings at both ends of the valve core, a valve stem at the upper end of the valve core, an extension rod at the upper end of the valve stem, a knob cover at the upper end of the extension rod, two symmetrically arranged chamfers on the inner wall of the sealing rings, and rubber rings at the chamfers on the left and right ends of the sealing rings.

[0007] Preferably, the ball valve body has an outlet at the right end, the connector is connected to the ball valve body through the outlet, and the ball valve body has a quarter-circle limiting groove at the upper end.

[0008] Preferably, the upper end of the valve core is provided with a connecting groove, the lower end of the valve stem is engaged with the valve core through the connecting groove, multiple sealing rings are sleeved on the outer wall of the valve stem, a stepped groove is provided on the outer side of the valve stem, and a sealing ring is fixed in the stepped groove. The cross section of the sealing ring is a right-angled triangle.

[0009] Preferably, the upper end of the valve stem is prismatic, the extension rod is connected to the upper end of the valve stem, the extension rod is fixedly connected to the valve stem by bolts, and the outer wall of the extension rod is provided with a limiting protrusion.

[0010] Preferably, the upper end of the extension rod is prismatic, and a groove is provided at the prismatic part of the extension rod. A snap-fit ​​component is fixedly engaged in the groove, and the snap-fit ​​component is fixedly connected to the knob cover. The upper end of the extension rod is snapped into the knob cover.

[0011] Preferably, the valve core has a through hole for connecting the inlet and outlet.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. By setting sealing rings at both ends of the valve core, and setting a chamfer on the inner side of the sealing ring, it is easy for the chamfer to fit with the valve core. At the same time, a rubber ring is set on the sealing ring. When installing the valve core, the rubber ring on one side abuts against the ball valve body and connecting parts, and the rubber ring on the other side abuts against the valve core. This ensures the sealing between the ball valve body, connecting parts and valve core, and prevents water leakage. At the same time, after the surface of the valve core is worn, due to the flexibility of the rubber ring, it will continue to fit against the surface of the valve core, ensuring the sealing effect between the sealing ring and the valve core.

[0014] 2. By setting a chamfer inside the sealing ring, when water flows through the sealing ring, the water will quickly pass through the valve core and the sealing ring along the inclined surface due to the effect of the chamfer. By setting a sealing ring on the sealing ring, when connecting the extension rod and the valve stem, the valve stem will gradually rise, and the sealing ring and the ball valve body will be squeezed, preventing the sealing between the valve stem and the ball valve body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an overall exploded view of the present invention;

[0017] Figure 3 This is an overall exploded view of the present invention;

[0018] Figure 4 This is a schematic cross-sectional view of the present invention;

[0019] Figure 5 This is a cross-sectional schematic diagram of the sealing ring of this utility model.

[0020] The diagram shows the following labels: 1. Ball valve body; 2. Connector; 3. Extension rod; 4. Knob cover; 5. Valve core; 6. Valve stem; 11. Inlet; 12. Outlet; 13. Limiting groove; 31. Limiting protrusion; 41. Snap-fit ​​component; 51. Connecting groove; 52. Sealing ring; 61. Sealing ring; 62. Sealing ring; 521. Chamfer; 522. Rubber ring. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] Please see Figure 2 , Figure 3 and Figure 5 A knob-operated, height-adjustable, straight-through ball valve includes a ball valve body 1. An inlet 11 is located at the left end of the ball valve body 1, and a connector 2 is connected to the right end of the ball valve body 1. A valve core 5 is disposed inside the ball valve body 1. Two symmetrically arranged sealing rings 52 are provided at both ends of the valve core 5. By providing sealing rings 52 at both ends of the valve core 5, and simultaneously providing a chamfer 521 on the inner side of the sealing rings 52, it is easy for the chamfer 521 to fit snugly against the valve core 5. Additionally, rubber rings 522 are provided on the sealing rings 52. When installing the valve core 5, one side of the rubber ring 522 abuts against the ball valve body 1 and the connector 2, while the other side abuts against the valve core 5, ensuring the proper connection between the ball valve body 1, the connector 2, and the valve core 5. The sealing ring 52 ensures a tight seal between the valve core 5 and the valve core 5 to prevent leakage. Even after wear on the valve core 5 surface, the flexible rubber ring 522 will continue to adhere to the valve core 5 surface, guaranteeing a tight seal between the sealing ring 52 and the valve core 5. The upper end of the valve core 5 is connected to a valve stem 6, and the upper end of the valve stem 6 is connected to an extension rod 3. The upper end of the extension rod 3 is connected to a knob cover 4. The inner wall of the sealing ring 52 has two symmetrically arranged chamfers 521. Rubber rings 522 are provided at the chamfers 521 on both the left and right sides of the sealing ring 52. By setting chamfers 521 inside the sealing ring 52, when water flows through the sealing ring 52, the chamfers 521 cause the water to flow quickly along the inclined surface through the valve core 5 and the sealing ring 52.

[0023] Please see Figure 1 , Figure 2 and Figure 3 The ball valve body 1 has an outlet 12 at its right end. The connector 2 is connected to the ball valve body 1 through the outlet 12. The upper end of the ball valve body 1 has a quarter-circle limiting groove 13. The outer wall of the extension rod 3 has a limiting protrusion 31. The limiting protrusion 31 corresponds to the limiting groove 13 and limits the rotation of the valve core 5 and the extension rod 3 to ensure that the valve core 5 is in the open or closed position, preventing excessive rotation and continued water flow.

[0024] Please see Figure 2 , Figure 3 and Figure 4 The upper end of the valve core 5 is provided with a connecting groove 51, and the lower end of the valve stem 6 is engaged with the valve core 5 through the connecting groove 51. Multiple sealing rings 61 are sleeved on the outer wall of the valve stem 6. By setting multiple sealing rings 61 on the outer wall of the valve stem 6, the sealing between the valve stem 6 and the ball valve body 1 is further enhanced, and water leakage is reduced. A stepped groove is provided on the outer side of the valve stem 6, and a sealing ring 62 is fixed in the stepped groove. The cross-section of the sealing ring 62 is a right-angled triangle. By setting the sealing ring 62 on the sealing ring 62, when the extension rod 3 is connected to the valve stem 6, the valve stem 6 will gradually rise, and the sealing ring 62 will be squeezed between the ball valve body 1, preventing the sealing between the valve stem 6 and the ball valve body 1.

[0025] Please see Figure 1 , Figure 2 and Figure 3 The upper end of the valve stem 6 is prismatic. The extension rod 3 is connected to the upper end of the valve stem 6 and is fixedly connected to the valve stem 6 by bolts. By setting the upper end of the valve stem 6 to be prismatic, relative sliding of the valve stem 6 is prevented when the extension rod 3 is rotated, thus preventing transmission failure, when the extension rod 3 is connected to the valve stem 6. The upper end of the extension rod 3 is prismatic. By setting the upper end of the extension rod 3 to be prismatic, relative sliding of the valve stem 6 is prevented when the extension rod 3 is rotated to the knob cover 4. When the extension rod 3 slides relative to the extension rod 3, transmission cannot be achieved. The extension rod 3 has a groove at the prism, and a snap-fit ​​part 41 is fixedly engaged in the groove. The snap-fit ​​part 41 is fixedly connected to the knob cover 4, ensuring that the knob cover 4 is connected to the extension rod 3 and preventing the knob cover 4 from falling off. The upper end of the extension rod 3 is engaged with the knob cover 4. The valve core 5 has a through hole for connecting the inlet 11 and the outlet 12, ensuring that the water flow can be realized and cut off when the valve core 5 is rotated.

[0026] When using this utility model:

[0027] First, fix the rubber ring 522 onto the sealing ring 52 and place it inside the ball valve body 1. Then, place the valve stem 6 into the ball valve body 1, place the valve core 5 into the ball valve body 1, place the other sealing ring 52 into the ball valve body 1, and fix the connector 2 at the outlet 12 and tighten it. During the tightening process, the rubber ring 522 on the sealing ring 52 will press against the valve core 5, the ball valve body 1, and the connector 2 respectively to ensure the sealing of the connection between them.

[0028] Then, the extension rod 3 and the valve stem 6 are connected by bolts and tightened. During the tightening process of connecting the extension rod 3 and the valve stem 6, the valve stem 6 will gradually rise, and the sealing ring 62 will be squeezed between the ball valve body 1 to prevent the valve stem 6 and the ball valve body 1 from sealing.

[0029] Next, the knob cover 4 is connected to the extension rod 3 via the snap-fit ​​connector 41;

[0030] Finally, turning the knob cover 4 will open and close the straight-through ball valve.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A knob-operated, height-adjustable, straight-through ball valve, characterized in that: The device includes a ball valve body (1), with an inlet (11) at the left end and a connector (2) at the right end. The ball valve body (1) has a valve core (5) inside, with two symmetrically arranged sealing rings (52) at both ends. The upper end of the valve core (5) is connected to a valve stem (6), and the upper end of the valve stem (6) is connected to an extension rod (3). The upper end of the extension rod (3) is connected to a knob cover (4). The inner wall of the sealing ring (52) has two symmetrically arranged chamfers (521), and rubber rings (522) are provided at the chamfers (521) on the left and right sides of the sealing ring (52).

2. The knob-lifted straight-through ball valve according to claim 1, characterized in that: The ball valve body (1) has an outlet (12) at its right end, and the connector (2) is connected to the ball valve body (1) through the outlet (12). The ball valve body (1) has a quarter-circle limiting groove (13) at its upper end.

3. A knob-lifted straight-through ball valve according to claim 1, characterized in that: The upper end of the valve core (5) is provided with a connecting groove (51), and the lower end of the valve stem (6) is connected to the valve core (5) through the connecting groove (51). Multiple sealing rings (61) are sleeved on the outer wall of the valve stem (6). A stepped groove is provided on the outer side of the valve stem (6), and a sealing ring (62) is fixed in the stepped groove. The cross section of the sealing ring (62) is a right triangle.

4. A knob-lifted straight-through ball valve according to claim 1, characterized in that: The upper end of the valve stem (6) is prismatic, and the extension rod (3) is connected to the upper end of the valve stem (6). The extension rod (3) is fixedly connected to the valve stem (6) by bolts, and the outer wall of the extension rod (3) is provided with a limiting protrusion (31).

5. A knob-lifted straight-through ball valve according to claim 1, characterized in that: The upper end of the extension rod (3) is prismatic, and a groove is provided at the prismatic part of the extension rod (3). A snap-fit ​​part (41) is fixedly engaged in the groove. The snap-fit ​​part (41) is fixedly connected to the knob cover (4). The upper end of the extension rod (3) is engaged with the knob cover (4).

6. A knob-lifted straight-through ball valve according to claim 1, characterized in that: The valve core (5) has a through hole for connecting the inlet (11) and the outlet (12).

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