Blank material structure for machining hard sealing ore pulp plug valve seat

Abstract

The utility model relates to the technical field of turning of plug valves, in particular to a blank barrel material structure for machining a valve seat of a hard sealing ore pulp plug valve, which comprises two process clamping parts, the two process clamping parts are respectively connected and arranged at two ends of a valve seat blank material through a connecting bridge, and when the valve seat blank material is turned and clamped, the valve seat blank material is clamped by the connecting bridge. The technical clamping parts at the two ends of the valve seat blank material are clamped by a chuck or a central support of a lathe, so that the valve seat blank material can be clamped on the lathe, clamping is convenient to complete, the valve seat blank material is not contacted during clamping, the damage to the valve seat blank material is reduced, and the first stress relief groove is formed between the technical clamping parts and the valve seat blank material, so that the valve seat blank material is prevented from being damaged. The first stress relief groove can release stress (axial) generated in the machining process, and the machining quality of the valve seat is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of turning processing of plug valves, in particular to a blank structure for processing the seat of a hard-sealed slurry plug valve. Background Art

[0002] The manufacturing process of the seat of a hard-sealed slurry plug valve is as follows: first, a blank is manufactured, and then the blank is clamped on a lathe for turning processing. Since the blank is not provided with a clamping structure, it is not convenient to clamp the blank on the lathe. During the turning processing of the blank, different tooling fixtures are required to assist in clamping for each process (such as turning the inner hole, turning the outer circle, grinding the inner hole, grinding the outer circle, etc.), which seriously affects the processing efficiency of the seat of the hard-sealed slurry plug valve. Summary of the Utility Model

[0003] The technical problem solved by the utility model is to provide a blank structure for processing the seat of a hard-sealed slurry plug valve that is convenient for clamping.

[0004] The technical solution adopted by the utility model to solve its technical problem is: a blank structure for processing the seat of a hard-sealed slurry plug valve, including a valve seat blank, and further including two process clamping parts. The two process clamping parts are respectively connected and arranged at both ends of the valve seat blank through connection bridges, and a first stress-relieving groove is arranged between the process clamping part and the valve seat blank.

[0005] Further, the number of valve seat blanks is three, and the three valve seat blanks form a hollow cylindrical shape. A second stress-relieving groove is arranged between any two valve flap blanks;

[0006] One process clamping part is connected to the valve seat blank through three connection bridges, and one end of one connection bridge is connected to one valve flap blank.

[0007] Further, the process clamping part is a hollow cylindrical shape.

[0008] Further, the three connection bridges are evenly distributed in the circumferential direction of the process clamping part.

[0009] Further, it further includes a top plate. A top groove is arranged in the exact middle of the top plate, and the top plate can be abutted against the process clamping part.

[0010] Further, the top plate includes a small-diameter cylindrical part and a large-diameter cylindrical part. The small-diameter cylindrical part is connected and arranged in the exact middle of the large-diameter cylindrical part. The small-diameter cylindrical part can be matched and arranged in the process clamping part, and the large-diameter cylindrical part is abutted against the side wall of the process clamping part.

[0011] The beneficial effects of the present utility model are as follows: By providing two process clamping parts, the two process clamping parts are respectively connected and arranged at both ends of the valve seat blank through a connecting bridge. When the valve seat blank is clamped for turning processing, the chuck or the center support of the lathe clamps the process clamping parts at both ends of the valve seat blank, and thus the clamping of the valve seat blank on the lathe can be completed. It is very convenient to complete the clamping, and it will not contact the valve seat blank during clamping, reducing the damage to the valve seat blank. Moreover, a first stress-relieving groove is provided between the process clamping part and the valve seat blank, and the first stress-relieving groove can release the stress (axial direction) generated during the processing, ensuring the processing quality of the valve seat. Brief Description of the Drawings

[0012] Figure 1 is a schematic diagram of the blank structure;

[0013] Figure 2 is a schematic diagram of a clamping and processing method of the blank;

[0014] Figure 3 is another schematic diagram of a clamping and processing method of the blank;

[0015] Marked as: valve seat blank 1, process clamping part 2, connecting bridge 3, first stress-relieving groove 4, second stress-relieving groove 5, top plate 6, chuck 7, center support 8, top cone head 9. Detailed Embodiment

[0016] The present utility model will be further described below in conjunction with the drawings and the detailed embodiment.

[0017] As Figure 1 shown, the blank structure of the present utility model for processing the valve seat of a hard-sealed pulp plug valve includes a valve seat blank 1, and also includes two process clamping parts 2. The two process clamping parts 2 are respectively connected and arranged at both ends of the valve seat blank 1 through a connecting bridge 3, and a first stress-relieving groove 4 is provided between the process clamping part 2 and the valve seat blank 1.

[0018] When the valve seat blank 1 is clamped for turning processing, the chuck 7 or the center support 8 of the lathe clamps the process clamping parts 2 at both ends of the valve seat blank 1. As Figure 2 shown, the chuck 7 of the lathe clamps the left process clamping part 2, and the center support 8 clamps the right process clamping part 2. The chuck 7 can be a three-jaw chuck or a four-jaw chuck. Thus, the clamping of the valve seat blank 1 on the lathe can be completed. It is very convenient to complete the clamping, and it will not contact the valve seat blank 1 during clamping, reducing the damage to the valve seat blank 1. Moreover, a first stress-relieving groove 4 is provided between the process clamping part 2 and the valve seat blank 1, and the first stress-relieving groove 4 can release the stress generated during the processing, ensuring the processing quality of the valve seat. After the turning processing of the plug valve seat is completed, a tool is used to cut the plug valve seat from the process clamping part 2.

[0019] Specifically, the overall shape of the cock valve seat is arc-shaped, and the angle of its arc is 115-118°. Therefore, the shape of the valve seat blank 1 is arc-shaped, and the angle of its arc is 115-118°. In order to improve the processing efficiency of the cock valve seat, for another example Figure 1 、 Figure 2 As shown, the number of valve seat blanks 1 is three. The three valve seat blanks 1 form a hollow cylindrical shape. A second stress-relieving groove 5 is provided between any two valve flap blanks. The second stress-relieving groove 5 is arranged along the axial direction of the cylindrical shape; a process clamping part 2 is connected to the valve seat blank 1 through three connecting bridges 3, and one end of a connecting bridge 3 is connected to one valve flap blank. Such a setting enables the turning processing of the three valve seat blanks 1 at the same time, improving the turning processing efficiency of the cock valve seat, and the second stress-relieving groove 5 can release the stress (radial) generated during the processing, further ensuring the processing quality of the valve seat.

[0020] For the convenience of manufacturing and using the process clamping part 2, the process clamping part 2 is in a hollow cylindrical shape, and the three connecting bridges 3 are evenly distributed in the circumferential direction of the process clamping part 2.

[0021] When the valve seat blank 1 is turned, the lathe does not necessarily include a chuck 7 and a center support 8. Some lathes have a chuck 7 at one end and a tailstock center 9 at the other end. In order to enable the blank structure to be turned on this type of lathe, the present invention also provides a top plate 6. A top groove is provided in the exact middle of the top plate 6. The top plate 6 can be abutted against the process clamping part 2. When the valve seat blank 1 is clamped for turning, as Figure 3 shown, the chuck 7 of the lathe clamps the left process clamping part 2, the top plate 6 abuts against the right end of the right process clamping part 2, and the tailstock center 9 is stuck in the top groove, thereby completing the clamping for turning the valve seat blank 1. For the convenience of using the tailstock center 9 and improving its use effect, the top plate 6 includes a small-diameter cylindrical part and a large-diameter cylindrical part. The small-diameter cylindrical part is connected and arranged in the exact middle of the large-diameter cylindrical part. The small-diameter cylindrical part can be matched and arranged in the process clamping part 2, and the large-diameter cylindrical part abuts against the side wall of the process clamping part 2. The small-diameter cylindrical part plays a role of connection and positioning.

Claims

1. The blank structure for machining the seat of a hard-sealed pulp plug valve, comprising a valve seat blank (1), characterized in that: It also includes two process clamping parts (2), and the two process clamping parts (2) are respectively connected and arranged at both ends of the valve seat blank (1) through a connecting bridge (3). A first stress-relieving groove (4) is arranged between the process clamping part (2) and the valve seat blank (1).

2. The blank structure for machining the valve seat of a hard-sealed pulp plug valve according to claim 1, characterized in that: The number of valve seat blanks (1) is three, and the three valve seat blanks (1) form a hollow cylindrical shape. A second stress-relieving groove (5) is arranged between any two valve flap blanks; One process clamping part (2) is connected to the valve seat blank (1) through three connecting bridges (3), and one end of one connecting bridge (3) is connected to one valve flap blank.

3. The blank structure for machining the valve seat of the hard-sealed pulp plug valve according to claim 2, wherein: The process clamping part (2) is a hollow cylindrical shape.

4. The blank structure for machining the valve seat of a hard-sealed pulp plug valve according to claim 3, characterized in that: The three connecting bridges (3) are evenly distributed in the circumferential direction of the process clamping part (2).

5. The blank structure for machining the valve seat of a hard-sealed pulp plug valve according to any one of claims 2 to 4, characterized in that: It also includes a top plate (6). A top groove is arranged in the exact middle of the top plate (6), and the top plate (6) can be abutted against the process clamping part (2).

6. The blank structure for machining the valve seat of a hard-sealed pulp plug valve according to claim 5, characterized in that: The top plate (6) includes a small-diameter cylindrical part and a large-diameter cylindrical part. The small-diameter cylindrical part is connected and arranged in the exact middle of the large-diameter cylindrical part. The small-diameter cylindrical part can be arranged in a matching manner in the process clamping part (2), and the large-diameter cylindrical part is abutted against the side wall of the process clamping part (2).

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