Ball valve capable of preventing misdirection

Abstract

The utility model discloses a ball valve that can prevent mistaken rotation, when the valve handle needs to be rotated to adjust the opening and closing degree of the ball valve body, first, the elastic assembly's elasticity is overcome to pull out the telescopic handle outward, so that the limiting slot of the limiting sheet and the limiting disc is separated, at this time, the rotation of the valve handle is not limited and can be rotated, which is convenient for rotating the valve handle in operation, then, after the valve handle is rotated to the required position, in the process of loosening the telescopic handle, the elastic assembly drives the telescopic handle to reset, so that the limiting sheet is embedded in the limiting slot again, to realize the mistaken rotation of the valve handle.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a ball valve that can prevent accidental rotation. Background Technology

[0002] Ball valves are used to open and close pipelines, control flow direction, and regulate and control the transport of media (pressure, flow rate). The valve handle of a ball valve can be used to adjust the degree of opening and closing of the valve ball to achieve the functions of opening and closing pipelines, controlling flow direction, and regulating and controlling the transport of media.

[0003] Some ball valves require long-term control and maintenance of the medium delivery rate. However, sometimes accidental contact or incorrect operation can cause changes in the medium delivery rate or even closure of the ball valve. For example, Chinese patent CN216242444U, published on April 8, 2022, discloses a ball valve with a function to limit the rotation angle of the valve handle. This design allows the limiting plate of the sliding sleeve on the valve handle to be embedded in the limiting groove of the ball valve body, thereby limiting the rotation of the valve handle and preventing accidental rotation.

[0004] However, in the aforementioned comparative patents, when rotating the valve handle, it is necessary to first move the sliding sleeve so that the limiting piece of the sliding sleeve disengages from the limiting groove of the ball valve body, which makes the operation of rotating the valve handle more troublesome. Utility Model Content

[0005] The purpose of this invention is to provide a ball valve that can prevent accidental rotation, while also facilitating the rotation of the valve handle.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a ball valve that can prevent accidental rotation, comprising a ball valve body and a valve handle disposed on a valve stem of the ball valve body, wherein the bottom of the portion of the valve stem protruding from the ball valve body is a cylindrical portion, a hexagonal prism portion with its orthographic projection located within the cylindrical portion is disposed above the cylindrical portion of the valve stem, and a threaded shaft portion with its orthographic projection located within the hexagonal prism portion is disposed above the hexagonal prism portion of the valve stem; a limiting disc with circumferentially arrayed limiting grooves is sleeved on the cylindrical portion of the valve stem, and a positioning element restricting the rotation of the limiting disc is disposed between the limiting disc and the ball valve body; the valve handle comprises a rotating sleeve sleeved on the hexagonal prism portion, a telescopic handle telescopically disposed on the rotating sleeve, a limiting piece disposed on the telescopic handle, and an elastic component disposed between the rotating sleeve and the telescopic handle and driving the telescopic handle to move toward the rotating sleeve, wherein during the movement of the telescopic handle toward the rotating sleeve, the limiting piece is embedded in any one of the limiting grooves of the limiting disc; a locking nut for pressing the rotating sleeve is threadedly connected to the threaded shaft portion.

[0007] A further setting of the present utility model is that the positioning member includes a plurality of positioning protrusions provided on the ball valve body, and positioning holes corresponding to the positioning protrusions are provided on the limiting disc.

[0008] A further setting of the present utility model is that a telescopic sleeve with a telescopic groove having a "mouth" - shaped cross - section is provided on the circumferential side of the rotating sleeve. One end of the telescopic handle is provided with a telescopic block telescopically arranged in the telescopic groove, and connecting pieces are provided on both sides of the telescopic handle near one end of the telescopic block; the elastic component includes two guide shafts provided on both sides of the telescopic block and passing through the two connecting pieces, two compression springs respectively sleeved on the ends of the guide shafts passing through the connecting pieces, and anti - detachment end caps threadedly connected to the ends of the guide shafts to prevent the compression springs from falling off.

[0009] A further setting of the present utility model is that a rubber buffer pad surrounding the telescopic block is provided on the end face of the telescopic handle near the telescopic block. When the telescopic block moves towards the direction close to the telescopic sleeve to the limit state under the action of the compression spring, the rubber buffer pad is pressed tightly between the telescopic sleeve and the telescopic handle.

[0010] A further setting of the present utility model is that an arc - shaped groove surrounding the valve stem is provided on the upper surface of the limiting disc, and an arc - shaped piece embedded and movable in the arc - shaped groove is provided on one side of the rotating sleeve away from the telescopic handle.

[0011] In summary, the beneficial effects of the present utility model are as follows:

[0012] 1. When it is necessary to rotate the valve handle to adjust the opening and closing degree of the ball valve body, first pull the telescopic handle outwards against the elastic force of the elastic component so that the limiting piece and the limiting groove of the limiting disc are separated. At this time, the rotation of the valve handle is not restricted and can be rotated, which has the effect of facilitating the rotation of the valve handle in operation; then after the valve handle is rotated to the required position, during the process of releasing the telescopic handle, the elastic component drives the telescopic handle to reset, making the limiting piece re - embed in the limiting groove to prevent the valve handle from being accidentally rotated.

[0013] 2. The positioning member includes a plurality of positioning protrusions provided on the ball valve body, and positioning holes corresponding to the positioning protrusions are provided on the limiting disc, thereby fixing the limiting disc to prevent the limiting disc from rotating.

[0014] 3. The elastic component includes two guide shafts provided on both sides of the telescopic block and passing through the two connecting pieces, two compression springs respectively sleeved on the ends of the guide shafts passing through the connecting pieces, and anti - detachment end caps threadedly connected to the ends of the guide shafts to prevent the compression springs from falling off, thereby driving the telescopic handle to move towards the direction close to the telescopic sleeve to make the limiting piece embed in the limiting groove.

[0015] 4. The setting of the rubber buffer pad enables the rubber buffer pad to play a buffering role during the movement of the telescopic handle towards the rotating sleeve.

[0016] 5. The upper surface of the limit plate is provided with an arc-shaped groove around the valve stem, and an arc-shaped piece is provided on the side of the rotating sleeve away from the telescopic handle, which is embedded in the arc-shaped groove, thereby improving the stability of the valve handle rotation and preventing the limit plate from loosening up and down. Attached Figure Description

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

[0018] Figure 2 This is an exploded view of the structure of this utility model;

[0019] Figure 3 yes Figure 2 A schematic diagram of a local structure based on the basic structure;

[0020] Figure 4 This is an exploded view of a portion of the valve handle.

[0021] Reference numerals in the attached drawings: 1. Ball valve body; 2. Valve stem; 2-1. Cylindrical part; 2-2. Hexagonal column part; 2-3. Threaded shaft part; 3. Valve handle; 3-1. Rotating sleeve; 3-1-1. Telescopic sleeve; 3-2. Telescopic handle; 3-2-1. Telescopic block; 3-2-2. Connecting piece; 3-2-3. Rubber buffer pad; 3-2-4. Arc-shaped piece; 3-3. Limiting piece; 3-4. Elastic component; 3-4-1. Guide shaft; 3-4-2. Compression spring; 3-4-3. Anti-detachment end cap; 4. Limiting disc; 4-1. Limiting groove; 4-2. Positioning hole; 4-3. Arc-shaped groove; 5. Positioning element; 6. Locking nut. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Example: A ball valve that prevents accidental rotation, such as Figure 1 and Figure 2 As shown, it includes a ball valve body 1 and a valve handle 3 disposed on the valve stem 2 of the ball valve body 1.

[0024] like Figure 2 and Figure 3 As shown, the bottom of the part of the valve stem 2 that protrudes from the ball valve body 1 is a cylindrical part 2-1. Above the cylindrical part 2-1, the valve stem 2 is provided with a hexagonal column part 2-2 whose orthogonal projection is located inside the cylindrical part 2-1. Above the hexagonal column part 2-2, the valve stem 2 is provided with a threaded shaft part 2-3 whose orthogonal projection is located inside the hexagonal column part 2-2.

[0025] like Figure 2 and Figure 3As shown, a limiting disk 4 with limiting grooves 4-1 arranged in a circumferential array on the circumferential side is sleeved on the cylindrical portion 2-1 of the valve stem 2. A positioning member 5 for restricting the rotation of the limiting disk 4 is provided between the limiting disk 4 and the ball valve body 1. The positioning member 5 includes a plurality of positioning protrusions provided on the ball valve body 1, and positioning holes 4-2 corresponding to the limiting protrusions are provided on the limiting disk 4.

[0026] As Figures 2 to 4 shown, the valve handle 3 includes a rotating sleeve 3-1 sleeved on the hexagonal column portion 2-2, a telescopic handle 3-2 telescopically arranged on the rotating sleeve 3-1, a limiting piece 3-3 arranged on the telescopic handle, and an elastic component 3-4 arranged between the rotating sleeve 3-1 and the telescopic handle 3-2 and driving the telescopic handle 3-2 to move towards the rotating sleeve 3-1. During the process of the telescopic handle 3-2 moving towards the rotating sleeve 3-1, the limiting piece 3-3 is embedded in any one of the limiting grooves 4-1 of the limiting disk 4. The rotating sleeve 3-1 is not pressed against the limiting disk 4. The thickness of the rotating sleeve 3-1 is greater than the thickness of the hexagonal column portion 2-2.

[0027] As Figures 2 to 4 shown, the circumferential side of the rotating sleeve 3-1 is provided with a telescopic sleeve 3-1-1 having a telescopic groove with a "mouth" - shaped cross - section. One end of the telescopic handle 3-2 is provided with a telescopic block 3-2-1 telescopically arranged in the telescopic groove. Connecting pieces 3-2-2 are arranged on both sides of the telescopic handle 3-2 near the telescopic block 3-2-1; the elastic component 3-4 includes two guide shafts 3-4-1 arranged on both sides of the telescopic block 3-2-1 and passing through the two connecting pieces 3-2-2, two compression springs 3-4-2 respectively sleeved on one end of the guide shafts 3-4-1 passing through the connecting pieces 3-2-2, and anti - detachment end caps 3-4-3 threadedly connected to the ends of the guide shafts 3-4-1 to prevent the compression springs 3-4-2 from falling off. At the same time, a rubber buffer pad 3-2-3 surrounding the telescopic block 3-2-1 is arranged on the end face of the telescopic handle 3-2 near the telescopic block 3-2-1. When the telescopic block 3-2-1 moves to the limit state towards the telescopic sleeve 3-1-1 under the action of the compression spring 3-4-2, the rubber buffer pad 3-2-3 is pressed between the telescopic sleeve 3-1-1 and the telescopic handle 3-2.

[0028] As Figure 3 shown, at the same time, an arc - shaped groove 4-3 surrounding the valve stem 2 (see Figure 1 ) is arranged on the upper surface of the limiting disk 4. An arc - shaped piece 3-2-4 is arranged on the side of the rotating sleeve 3-1 away from the telescopic handle 3-2 and is embedded in the arc - shaped groove 4-3 for movement.

[0029] As Figures 1 to 3 shown, a locking nut 6 for pressing the rotating sleeve 3-1 is threadedly connected to the threaded shaft portion 2-3.

[0030] Implementation effect: When it is necessary to rotate the valve handle 3 to adjust the opening and closing degree of the ball valve body 1, the elastic force of the elastic component 3-4 is first overcome to pull the telescopic handle 3-2 outward, so that the limiting plate 3-3 and the limiting groove 4-1 of the limiting plate 4 are separated. At this time, the rotation of the valve handle 3 is unrestricted and can be rotated, which makes it convenient to rotate the valve handle 3 in operation. Then, after the valve handle 3 is rotated to the required position, during the process of releasing the telescopic handle 3-2, the elastic component 3-4 drives the telescopic handle 3-2 to reset, so that the limiting plate 3-3 is re-embedded in the limiting groove 4-1, thereby preventing the valve handle 3 from being turned accidentally.

[0031] The positioning component 5 includes multiple positioning protrusions on the ball valve body 1, and the limiting disc 4 is provided with positioning holes 4-2 corresponding to the limiting protrusions, thereby fixing the limiting disc 4 and preventing it from rotating. The elastic component 3-4 includes two guide shafts 3-4-1 located on both sides of the telescopic block 3-2-1 and passing through the two connecting pieces 3-2-2, two compression springs 3-4-2 respectively sleeved on one end of the guide shafts 3-4-1 passing through the connecting pieces 3-2-2, and an anti-dislodgement end cap 3-4-3 threaded to the end of the guide shafts 3-4-1 to prevent the compression springs 3-4-2 from falling off, thereby driving the telescopic handle 3-2 to move towards the telescopic sleeve 3-1-1, so as to drive the limiting piece 3-3 to be embedded in the limiting groove 4-1. The rubber buffer pad 3-2-3 is provided so that the rubber buffer pad 3-2-3 can play a buffering role during the movement of the telescopic handle 3-2 towards the rotating sleeve 3-1.

[0032] The upper surface of the limiting plate 4 is provided with an arc-shaped groove 4-3 surrounding the valve stem 2. The rotating sleeve 3-1 is provided with an arc-shaped piece 3-2-4 embedded in the arc-shaped groove 4-3 on the side away from the telescopic handle 3-2, thereby improving the stability of the valve handle 3 rotation and preventing the limiting plate 4 from loosening up and down.

[0033] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A ball valve capable of preventing accidental rotation, comprising a ball valve body (1) and a valve handle (3) disposed on a valve stem (2) of the ball valve body (1), characterized in that: The bottom of the part of the valve stem (2) protruding from the ball valve body (1) is a cylindrical part (2-1). Above the cylindrical part (2-1) of the valve stem (2), there is a hexagonal column part (2-2) whose orthographic projection is located inside the cylindrical part (2-1). Above the hexagonal column part (2-2) of the valve stem (2), there is a threaded shaft part (2-3) whose orthographic projection is located inside the hexagonal column part (2-2). A limiting disc (4) with circumferentially and circularly arrayed limiting grooves (4-1) is sleeved on the cylindrical part (2-1) of the valve stem (2). A positioning member (5) for restricting the rotation of the limiting disc (4) is provided between the limiting disc (4) and the ball valve body (1). The valve handle (3) includes a rotating sleeve (3-1) sleeved on the hexagonal column part (2-2), a telescopic handle (3-2) telescopically arranged on the rotating sleeve (3-1), a limiting piece (3-3) arranged on the telescopic handle, and an elastic component (3-4) arranged between the rotating sleeve (3-1) and the telescopic handle (3-2) and driving the telescopic handle (3-2) to move towards the rotating sleeve (3-1). During the process of the telescopic handle (3-2) moving towards the rotating sleeve (3-1), the limiting piece (3-3) is embedded in any one of the limiting grooves (4-1) of the limiting disc (4). A locking nut (6) for pressing and fixing the rotating sleeve (3-1) is threaded on the threaded shaft part (2-3).

2. The ball valve for preventing accidental rotation according to claim 1, characterized in that: The positioning member (5) includes a plurality of positioning protrusions arranged on the ball valve body (1), and positioning holes (4-2) corresponding to the limiting protrusions are arranged on the limiting disc (4).

3. A ball valve for preventing accidental rotation according to claim 1, characterized in that: A telescopic sleeve (3-1-1) with a telescopic groove whose cross-section is in a "mouth" shape is arranged on the circumferential side of the rotating sleeve (3-1). One end of the telescopic handle (3-2) is provided with a telescopic block (3-2-1) telescopically arranged in the telescopic groove. Connecting pieces (3-2-2) are arranged on both sides of the telescopic handle (3-2) near the telescopic block (3-2-1). The elastic component (3-4) includes two guiding shafts (3-4-1) arranged on both sides of the telescopic block (3-2-1) and passing through the two connecting pieces (3-2-2), two compression springs (3-4-2) respectively sleeved on the ends of the guiding shafts (3-4-1) passing through the connecting pieces (3-2-2), and anti-detachment end caps (3-4-3) threadedly connected to the ends of the guiding shafts (3-4-1) to prevent the compression springs (3-4-2) from falling off.

4. A ball valve for preventing accidental rotation according to claim 3, characterized in that: A rubber buffer pad (3-2-3) surrounding the telescopic block (3-2-1) is arranged on the end face of the telescopic handle (3-2) near the telescopic block (3-2-1). When the telescopic block (3-2-1) moves to the limit state towards the telescopic sleeve (3-1-1) under the action of the compression spring, the rubber buffer pad (3-2-3) is pressed between the telescopic sleeve (3-1-1) and the telescopic handle (3-2).

5. A ball valve for preventing accidental rotation according to claim 1, characterized in that: The upper surface of the limiting plate (4) is provided with an arc-shaped groove (4-3) surrounding the valve stem (2), and the rotating sleeve (3-1) is provided with an arc-shaped piece (3-2-4) that is embedded in the arc-shaped groove (4-3) for movement on the side away from the telescopic handle (3-2).

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