Device for detecting position degree of crescent groove of ball core of ball valve

Abstract

The utility model relates to a ball valve ball core crescent groove position degree detection device, which comprises a V-shaped block, the bottom of a V-shaped groove of the V-shaped block is provided with a positioning block protruding upwards, the V-shaped groove comprises a left inclined surface and a right inclined surface which are arranged symmetrically to the center of the V-shaped block, and the positioning block is provided with a left side surface facing the left inclined surface and a right side surface facing the right inclined surface. The position degree of the left side face and the right side face relative to the left inclined face and the right inclined face of the V-shaped groove is 0.01, the two inner side faces, in the width direction of the crescent groove, of the ball core are correspondingly matched with the left side face and the right side face of the positioning block, and the ball core spherical faces on the two sides of the crescent groove are correspondingly in attached contact with the left inclined face and the right inclined face. According to the utility model, the positioning block matched with the crescent groove of the ball core of the ball valve is arranged at the bottom of the V-shaped groove of the V-shaped block, so that the position degree of the crescent groove of the ball core relative to the spherical surface of the ball core can be rapidly detected by observing the contact condition between the spherical surface of the ball core on two sides of the crescent groove and the left inclined surface and the right inclined surface of the V-shaped groove, and the detection process is convenient and rapid.

Description

Technical Field

[0001] This utility model relates to the field of valve manufacturing technology, and in particular to a ball valve ball core crescent groove position detection device. Background Technology

[0002] The position of the crescent groove of the ball core relative to the spherical surface of a floating ball valve refers to the specific position and angle of the crescent groove on the spherical surface, which directly affects the sealing performance and flow regulation capability of the ball valve.

[0003] Therefore, the positional accuracy of the crescent groove relative to the spherical surface after the ball core is machined is particularly important. The accuracy of the crescent groove position has a significant impact on the assembly precision of the ball valve. Errors in the positional accuracy of the crescent groove will cause the ball core to be driven eccentrically, which will increase the driving torque of the ball valve, increase the frictional damage of the ball core, and reduce the service life and reliability of the ball valve.

[0004] Currently, coordinate measuring machines (CMMs) are generally used to detect the position of the spherical core lunula. However, although CMMs have high detection accuracy, they are not only expensive, but the detection process is also cumbersome, resulting in a long detection time. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a ball valve ball core crescent groove position detection device that is convenient and quick to detect.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a ball valve core crescent groove position detection device, including a V-shaped block, wherein the bottom of the V-shaped groove of the V-shaped block is provided with an upwardly protruding positioning block, the upper end face of the positioning block is lower than the upper end face of the V-shaped block, the V-shaped groove includes a left inclined surface and a right inclined surface symmetrically arranged at the center of the V-shaped block, the positioning block has a left side facing the left inclined surface and a right side facing the right inclined surface, the positional degree between the left side and the right side relative to the left inclined surface and the right inclined surface of the V-shaped groove is 0.01, the two inner sides of the crescent groove of the core in the width direction are correspondingly matched with the left side and the right side of the positioning block, and the spherical surfaces of the core on both sides of the crescent groove are correspondingly in contact with the left inclined surface and the right inclined surface.

[0007] Preferably, the fitting clearance between the left and right sides and the two inner sides in the width direction of the crescent groove is 0.01 mm.

[0008] Furthermore, the bottom of the left slope and the bottom of the left side slope are connected by an arc transition, and the bottom of the right slope and the bottom of the right side slope are connected by an arc transition.

[0009] The beneficial effects of this utility model are as follows: By setting a positioning block at the bottom of the V-groove of the V-block that matches the crescent groove of the ball valve core, the contact status between the spherical surface of the ball core on both sides of the crescent groove and the left and right inclined surfaces of the V-groove can be observed. Then, a feeler gauge is used to detect the gap between the spherical surface and the left and right inclined surfaces of the V-groove, thereby quickly detecting the position of the crescent groove of the ball core relative to the spherical surface of the ball core. The detection process is convenient and quick. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0012] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0013] Figure 3 This is a three-dimensional structural diagram of the V-shaped block described in this utility model.

[0014] Figure 4 This is a three-dimensional structural diagram of the sphere core described in this utility model.

[0015] In the diagram: 1. V-shaped block, 2. V-shaped groove, 3. Positioning block, 4. Left inclined surface, 5. Right inclined surface, 6. Left side surface, 7. Right side surface, 8. Ball core, 9. Crescent groove. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0017] like Figures 1-4 The device shown is a ball valve core crescent groove position detection device, including a V-shaped block 1 placed on the detection platform during detection. The V-shaped groove 2 of the V-shaped block 1 has a left inclined surface 4 and a right inclined surface 5 symmetrically arranged at the center of the V-shaped block 1. A positioning block 3 with an upward protrusion is provided at the bottom of the V-shaped groove 2. The upper end surface of the positioning block 3 is lower than the upper end surface of the V-shaped block 1.

[0018] The positioning block 3 has a left side 6 and a right side 7. The left side 6 faces the left inclined surface 4, and the right side 7 faces the right inclined surface 5. The bottom of the left inclined surface 4 and the bottom of the left side 6 are connected by an arc transition, and the bottom of the right inclined surface 5 and the bottom of the right side 7 are connected by an arc transition. The positional degree between the left side 6 and the right side 7 and the left inclined surface 4 and the right inclined surface 5 of the V-groove 2 is 0.01.

[0019] The crescent groove 9 of the ball core 8 has two inner sides in the width direction that correspond to the left side 6 and right side 7 of the positioning block 3, respectively. The fitting gap between the left side 6, right side 7 and the two inner sides in the width direction of the crescent groove 9 is 0.01mm.

[0020] After the crescent groove 9 of the ball core 8 is machined, it is fitted onto the positioning block 3, ensuring that the spherical surfaces of the ball core 8 on both sides of the crescent groove 9 are in contact with the left inclined surface 4 and the right inclined surface 5. During testing, if the spherical surfaces of the ball core 8 on both sides of the crescent groove 9 are completely in contact with the left inclined surface 4 and the right inclined surface 5, it indicates that the positional accuracy of the crescent groove 9 relative to the spherical surface of the ball core 8 is acceptable. If there is a gap between the left inclined surface 4 or the right inclined surface 5 and the spherical surface of the ball core 8, this gap is measured with a feeler gauge, and the measured gap is divided by 2 to obtain the positional accuracy value of the crescent groove 9 relative to the spherical surface of the ball core 8.

[0021] This invention can quickly detect the position of the crescent groove 9 of the ball core 8 relative to the spherical surface of the ball core 8 after machining, thereby improving the machining quality and assembly accuracy of the crescent groove 9 of the ball core 8, and thus improving the service life and reliability of the ball valve.

[0022] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A ball valve ball core crescent groove position detection device, characterized in that: The device includes a V-shaped block (1), and the bottom of the V-shaped groove (2) of the V-shaped block (1) is provided with an upwardly protruding positioning block (3). The upper surface of the positioning block (3) is lower than the upper surface of the V-shaped block (1). The V-shaped groove (2) includes a left inclined surface (4) and a right inclined surface (5) set at the center of the symmetrical V-shaped block (1). The positioning block (3) has a left side surface (6) facing the left inclined surface (4) and a right side surface (7) facing the right inclined surface (5). The positional degree between the left side surface (6) and the right side surface (7) relative to the left inclined surface (4) and the right inclined surface (5) of the V-shaped groove (2) is 0.

01. The two inner surfaces of the crescent groove (9) of the ball core (8) in the width direction are correspondingly matched with the left side surface (6) and the right side surface (7) of the positioning block (3). The spherical surfaces of the ball core (8) on both sides of the crescent groove (9) are in contact with the left inclined surface (4) and the right inclined surface (5).

2. The ball valve ball core crescent groove position detection device as described in claim 1, characterized in that: The fit clearance between the left side (6), right side (7) and the two inner sides of the crescent groove (9) in the width direction is 0.01mm.

3. The ball valve ball core crescent groove position detection device as described in claim 1, characterized in that: The bottom of the left slope (4) and the bottom of the left side slope (6) are connected by a circular arc transition, and the bottom of the right slope (5) and the bottom of the right side slope (7) are connected by a circular arc transition.

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