Bidirectional metal hard sealing rotary ball valve

Abstract

The utility model discloses a bidirectional metal hard sealing rotary ball valve, and relates to the field of rotary ball valves. The bidirectional metal hard sealing rotary ball valve comprises a valve seat, a sealing part and an improved valve element, the improved valve element comprises a valve element main plate, a replaceable sealing plate, a clamping column and a fixed insertion rod, the replaceable sealing plate is arranged on one side of the valve element main plate, the clamping column is fixedly arranged on one side of the replaceable sealing plate, and the other end of the clamping column is movably inserted into the valve element main plate; the fixed insertion rod is arranged in the valve element main plate in a sliding mode and movably connected with the clamping column in an inserted mode. According to the two-way metal hard sealing rotary ball valve, the cover plate is detached from the valve element main plate, then the hexagonal rotary ejector block is rotated, the end of the hexagonal rotary ejector block and the end of the fixed insertion rod are staggered, the fixed insertion rod is pushed towards the middle, the end of the fixed insertion rod is moved out of the clamping column, the replaceable sealing plate is detached, and the valve element main plate is replaced. The valve handle base does not need to be disassembled in the whole replacement process, disassembly and assembly are convenient, meanwhile, the valve element main plate does not need to be replaced, and replacement cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary ball valves, in particular to a bidirectional metal hard-sealed rotary ball valve. Background Art

[0002] The rotary ball valve is a special ball valve. Its valve core is a valve plate eccentrically set on one side of the valve stem. It is squeezed into contact with the metal sealing part of the inner wall of one end of the valve body to achieve a two-way sealing effect. Compared with the ball valve, the flow rate is larger, and compared with the butterfly valve, the sealing effect is better.

[0003] The sealing function of the rotary ball valve mainly lies in the annular sealing contact part on one side of the valve plate and the metal sealing part installed on the inner wall of the valve seat. The metal sealing part is an assembly part and is easy to assemble and disassemble. However, the annular sealing contact part on the valve plate is usually integrally formed on the valve plate. When replacing it, the valve stem and the rotary positioning part at the bottom need to be removed, and then the valve plate needs to be removed and replaced. Not only is the replacement difficult, but the replacement cost is also high. Therefore, a bidirectional metal hard-sealed rotary ball valve is specially provided to solve the above problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a bidirectional metal hard-sealed rotary ball valve, which solves the problem of the existing rotary ball valve, in which the annular sealing contact part on the valve plate is usually integrally formed on the valve plate. When replacing it, it is necessary to remove the valve stem and the rotary positioning part at the bottom, and then remove the valve plate and replace it. This is not only difficult to replace, but also has high replacement costs.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a bidirectional metal hard-sealed rotary ball valve, comprising a valve seat and a sealing portion fixedly arranged inside one end of the valve seat, wherein an improved valve core is arranged inside the valve seat, and the improved valve core comprises;

[0006] The valve core main plate is rotatably connected to the inner wall of the valve seat;

[0007] A replaceable sealing plate is provided on one side of the valve core main plate, and the replaceable sealing plate is squeezed and sealed with the sealing portion;

[0008] A clamping column is fixedly arranged on one side of the replaceable sealing plate, and the other end of the clamping column is movably inserted into the valve core main board;

[0009] The fixed plug rod is slidably arranged inside the valve core main board, and the fixed plug rod is movably plugged into the clamping column.

[0010] Preferably, the valve seat includes a cast valve body and a valve handle seat fixedly installed on the top end of the cast valve body.

[0011] Preferably, the valve handle seat is rotatably connected to the upper valve stem, the inner bottom of the cast valve body is integrally formed with a mounting seat, a positioning column is fixedly installed inside the mounting seat, and the upper valve stem and the positioning column are both connected to the valve core mainboard.

[0012] Preferably, one side of the valve handle seat is rotatably connected to a ring handle, and the upper valve stem is transmission-connected to the ring handle.

[0013] Preferably, connecting seats are fixedly welded to the upper and lower ends of the back side of the valve core main board, and the upper valve stem and the positioning column are movably connected to the two sets of connecting seats respectively.

[0014] Preferably, a hexagonal rotating top block is rotatably connected to the middle of the valve core main plate, and the end of the hexagonal rotating top block is abutted against the end of the fixed insertion rod.

[0015] Preferably, a cover plate is fixedly mounted on the back of the valve core main plate, an external hexagonal shaft is fixedly welded to the back of the hexagonal rotating top block, and the external hexagonal shaft is movably inserted in the cover plate.

[0016] The utility model discloses a bidirectional metal hard-sealed rotary ball valve, which has the following beneficial effects: when the device is in use, the valve seat is removed from the pipeline, and then the cover plate is removed from the back of the valve core main board. At this time, the outer hexagonal shaft is disengaged from the cover plate, and then the hexagonal rotating top block is rotated so that its end is misaligned with the end of the fixed plug rod. At this time, the fixed plug rod is pushed toward the middle so that the end of the fixed plug rod is moved out of the clamping column. At this time, the replaceable sealing plate is removed and replaced separately, so that the valve handle seat does not need to be disassembled during the entire replacement process, and disassembly and assembly are convenient. At the same time, there is no need to replace the valve core main board, and the replacement cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the internal structure of the valve seat of the utility model;

[0020] Figure 3 This is an exploded view of the internal structure of the improved valve core of the utility model.

[0021] In the figure: 1. Valve seat; 11. Cast valve body; 12. Mounting seat; 13. Positioning column; 14. Valve handle seat; 15. Upper valve stem; 16. Ring handle; 2. Improved valve core; 21. Valve core main board; 22. Replaceable sealing plate; 23. Connecting seat; 24. Clamping column; 25. External hexagonal shaft; 26. Fixed plug rod; 27. Cover plate; 28. Hexagonal rotating top block; 3. Sealing part. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] The embodiment of the present application solves the problem of existing rotary ball valves by providing a bidirectional metal hard-sealed rotary ball valve, in which the annular sealing contact part on the valve plate is usually integrally formed on the valve plate. When replacing the valve, it is necessary to remove the valve stem and the rotary positioning part at the bottom, and then remove the valve plate and replace it. This is not only difficult to replace, but also has a high replacement cost.

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] The embodiment of the utility model discloses a bidirectional metal hard-sealed rotary ball valve.

[0026] According to the attached Figure 1-3 As shown, it includes a valve seat 1 and a sealing portion 3 fixedly arranged inside one end of the valve seat 1, and an improved valve core 2 is arranged inside the valve seat 1. The improved valve core 2 includes a valve core main board 21, a replaceable sealing plate 22, a clamping column 24 and a fixed plug rod 26; the valve core main board 21 is rotatably connected to the inner wall of the valve seat 1, and the replaceable sealing plate 22 is arranged on one side of the valve core main board 21, and the replaceable sealing plate 22 is squeezed and sealed with the sealing portion 3; the clamping column 24 is fixedly arranged on one side of the replaceable sealing plate 22, and the other end of the clamping column 24 is movably inserted into the valve core main board 21; the fixed plug rod 26 is slidably arranged inside the valve core main board 21, and the fixed plug rod 26 is movably inserted into the clamping column 24.

[0027] The middle part of the valve core main board 21 is rotatably connected with a hexagonal rotating top block 28, and the end of the hexagonal rotating top block 28 is abutted against the end of the fixed plug rod 26. A cover plate 27 is fixedly installed on the back of the valve core main board 21, and an external hexagonal shaft 25 is fixedly welded on the back of the hexagonal rotating top block 28, and the external hexagonal shaft 25 is movably inserted in the cover plate 27.

[0028] By removing the valve seat 1 from the pipeline, and then removing the cover plate 27 from the back of the valve core main board 21, the outer hexagonal shaft 25 is disengaged from the cover plate 27, and then the hexagonal rotating top block 28 is rotated so that its end is misaligned with the end of the fixed plug rod 26. At this time, the fixed plug rod 26 is pushed toward the middle so that the end of the fixed plug rod 26 is moved out of the clamping column 24. At this time, the replaceable sealing plate 22 is removed and replaced separately, so that the valve handle seat 14 does not need to be disassembled during the entire replacement process, and disassembly and assembly are convenient. At the same time, there is no need to replace the valve core main board 21, and the replacement cost is low.

[0029] The valve seat 1 includes a cast valve body 11 and a valve handle seat 14 fixedly mounted on the top of the cast valve body 11 .

[0030] The upper valve stem 15 is rotatably connected to the inner bottom of the valve handle seat 14, and a mounting seat 12 is integrally formed on the inner bottom of the cast valve body 11. A positioning column 13 is fixedly installed inside the mounting seat 12. The upper valve stem 15 and the positioning column 13 are both connected to the valve core main board 21.

[0031] One side of the valve handle seat 14 is rotatably connected to the annular handle 16, and the upper valve stem 15 is transmission-connected to the annular handle 16. By installing a worm gear at the top of the upper valve stem 15 and a worm at the end of the annular handle 16, the worm gear and worm are engaged and driven to drive the upper valve stem 15 to rotate, thereby achieving a self-locking effect.

[0032] The upper and lower ends of the back side of the valve core main board 21 are fixedly welded with connecting seats 23. The upper valve stem 15 and the positioning column 13 are movably connected to the two sets of connecting seats 23 respectively. The bottom end of the upper valve stem 15 is an external hexagonal shape, and the upper connecting seat 23 is provided with an internal hexagonal groove. The two are connected, so that the upper valve stem 15 can drive the valve core main board 21 to rotate, and the top end of the positioning column 13 is cylindrical, and the inside of the connecting seat 23 at the lower end is a circular hole. The two cooperate to realize rotation support.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A bidirectional metal hard-sealed rotary ball valve, comprising a valve seat (1) and a sealing portion (3) fixedly arranged inside one end of the valve seat (1), wherein an improved valve core (2) is arranged inside the valve seat (1), characterized in that: The improved valve core (2) comprises: A valve core main plate (21) is rotatably connected to the inner wall of the valve seat (1); A replaceable sealing plate (22) is provided on one side of the valve core main plate (21), wherein the replaceable sealing plate (22) is squeezed and sealed with the sealing portion (3); A clamping column (24) is fixedly arranged on one side of the replaceable sealing plate (22), and the other end of the clamping column (24) is movably inserted into the valve core main board (21); A fixed plug rod (26) is slidably arranged inside the valve core main board (21), and the fixed plug rod (26) is movably plugged into the clamping column (24).

2. The bidirectional metal hard seal rotary ball valve according to claim 1, characterized in that: The valve seat (1) comprises a cast valve body (11) and a valve handle seat (14) fixedly mounted on the top end of the cast valve body (11).

3. The bidirectional metal hard seal rotary ball valve according to claim 1, characterized in that: The valve handle seat (14) is internally rotatably connected to the upper valve stem (15), and the inner bottom of the cast valve body (11) is integrally formed with a mounting seat (12), and a positioning column (13) is fixedly installed inside the mounting seat (12), and the upper valve stem (15) and the positioning column (13) are both connected to the valve core main board (21).

4. The bidirectional metal hard seal rotary ball valve according to claim 3 is characterized in that: One side of the valve handle seat (14) is rotatably connected to an annular handle (16), and the upper valve stem (15) is transmission-connected to the annular handle (16).

5. The bidirectional metal hard seal rotary ball valve according to claim 3, characterized in that: Connecting seats (23) are fixedly welded to the upper and lower ends of the back of the valve core main board (21), and the upper valve stem (15) and the positioning column (13) are movably connected to the two groups of connecting seats (23) respectively.

6. The bidirectional metal hard seal rotary ball valve according to claim 1, characterized in that: The middle part of the valve core main plate (21) is rotatably connected to a hexagonal rotating top block (28), and the end of the hexagonal rotating top block (28) abuts against the end of the fixed plug rod (26).

7. The bidirectional metal hard seal rotary ball valve according to claim 6, characterized in that: A cover plate (27) is fixedly mounted on the back of the valve core main plate (21), an external hexagonal shaft (25) is fixedly welded on the back of the hexagonal rotating top block (28), and the external hexagonal shaft (25) is movably inserted into the cover plate (27).

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