Titanium alloy butterfly valve

Abstract

The utility model discloses a titanium alloy butterfly valve which comprises a valve body, a flow channel for fluid to pass through is formed in the valve body, a valve clack, an upper valve rod and a lower valve rod are arranged in the flow channel, the upper valve rod and the lower valve rod are connected with the valve clack in a rotating mode, an execution cavity is arranged at the upper end of the valve body, and a rotating disc and a driving assembly for driving the rotating disc to rotate are arranged on the valve clack in the circumferential direction of the valve clack in a rotating mode. A plurality of locking assemblies are arranged in the circumferential direction of the rotating disc at intervals, each locking assembly comprises a shell rotating along with the rotating disc, and a locking block, a locking groove formed in the inner wall of the flow channel and allowing the locking block to be inserted and a linkage structure controlling the locking block to go in and out of the locking groove are arranged on the shell in a limiting and sliding mode; the driving assembly is matched with the linkage structure to control the locking block to enter and exit from the locking groove. The titanium alloy butterfly valve has the following advantages and effects that the titanium alloy butterfly valve can effectively prevent the position of the disc from deviating, and fluid leakage is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a titanium alloy butterfly valve. Background Art

[0002] Butterfly valve, also known as flap valve or butterfly valve, is a simple regulating valve. Its closing member (valve disc or butterfly plate) is a disc, which rotates around the valve shaft to achieve the purpose of opening and closing. The butterfly valve mainly plays a cutting and throttling role in the pipeline and can be used to control various fluid media, such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.

[0003] Butterfly valves are in a closed state for a long time and are rarely opened. For example, some butterfly valves used on fire hydrants may only be opened when facing a fire, and most of them may never be opened. However, when the disc is closed, the pressure of the fluid medium in the pipeline is always present. If the disc is in a closed state for a long time and the pressure of the fluid medium is high, the position of the disc is prone to shift, resulting in leakage. How to ensure that the disc in the closed state can maintain a stable position without shifting under the long-term pressure of the fluid medium is a problem that needs to be solved. Utility Model Content

[0004] The utility model aims to provide a titanium alloy butterfly valve, which can effectively prevent the position of a disc from being offset and effectively prevent fluid leakage.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: a titanium alloy butterfly valve, including a valve body, a flow channel for fluid to pass through is formed in the valve body, a valve disc is arranged in the flow channel, the valve disc is rotatably connected to the upper valve stem and the lower valve stem, and an execution chamber is arranged at the upper end of the valve body, characterized in that: a turntable is arranged on the valve disc along its circumferential rotation, a driving component for driving the turntable to rotate is provided, and a plurality of locking components are arranged at circumferential intervals on the turntable, and the locking component includes a shell that rotates with the turntable, a locking block is slidingly provided on the upper limit position of the shell, a locking groove is opened on the inner wall of the flow channel for the locking block to be inserted, and a linkage structure for controlling the locking block to enter and exit the locking groove, and the driving component cooperates with the linkage structure to control the locking block to enter and exit the locking groove.

[0006] By adopting the above technical solution, when the valve flap is in a closed state, the turntable can be driven to rotate through the driving assembly so that the locking block is inserted into the locking groove. The structural strength of the valve flap in the closed state is improved through the cooperation between the locking block and the locking groove. Even if the valve flap in the closed state is under the long-term pressure of the fluid medium, the valve flap can maintain a stable position without displacement, and the locking block is inserted into the locking groove.

[0007] It is further configured that: the linkage structure includes a guide protrusion formed on one end of the locking block toward the locking groove, a guide arc groove arranged in the locking groove to adapt to the guide protrusion, and a driving spring that drives the locking block to move toward one side of the locking groove, and the guide arc groove cooperates with the guide protrusion to rotate the turntable to achieve separation of the two sides.

[0008] By adopting the above technical solution, the guide arc groove cooperates with the guide protrusion to rotate the turntable to achieve separation of the two sides.

[0009] It is further configured that: the driving assembly includes a driven gear arranged on the turntable and coaxial with the turntable, a through hole arranged on the upper valve stem and extending along its axis and connecting the execution chamber and the driven gear, a rotating rod rotatably arranged in the through hole, a driving gear rotating with the rotating rod and meshing with the driven gear, and a handwheel for controlling the rotation of the driving gear.

[0010] By adopting the above technical solution, the rotating rod is provided with active teeth, and the active teeth drive the transmission teeth to rotate.

[0011] It is further configured as follows: a first stopper and a second stopper are provided on the valve disc, and the locking block moves between the first stopper and the second stopper along with the rotating disk; when the locking block abuts against the first stopper or the second stopper, the positioning locking block corresponds to the locking groove.

[0012] By adopting the above technical solution, the locking block moves between the first stopper and the second stopper, so that the locking block is conveniently and accurately placed in a limit position of a locked state or an unlocked state, and the locking block can also be aligned with the locking groove.

[0013] It is further configured as follows: the valve flap includes a left disc body and a right disc body connected to the left disc body, and the turntable is rotatably arranged between the left disc body and the right disc body.

[0014] By adopting the above technical solution, the turntable is rotatably arranged between the left disk body and the right disk body, thereby optimizing the structure.

[0015] It is further configured as follows: a sealing structure is arranged between the left disk body and the right disk body and the inner wall of the flow channel, the two sealing structures include a sleeve groove opened on the circumference of the left disk body and the right disk body, the two sleeve grooves are sleeved with sealing rings, and when the valve disc is locked, the two sealing rings are provided with a limiting ring fixed to the inner wall of the flow channel on the back side.

[0016] By adopting the above technical solution and setting the sealing structure, the flow channel is made airtight, thereby effectively avoiding fluid leakage.

[0017] It is further configured as follows: a disassembly structure is provided between the two valve flaps and the upper valve stem and the lower valve stem, and the disassembly structure includes a connecting column located between the two valve flaps and formed on the upper valve stem and the lower valve stem, and a plurality of bolts threadedly connected through the left disk body, the connecting column and the right disk body.

[0018] By adopting the above technical solution and setting the disassembly structure, the disassembly and assembly of the valve disc is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a cross-sectional view of the overall structure of this embodiment; FIG2 is a schematic diagram of position A of this embodiment;

[0020] FIG3 is a side sectional view of this embodiment;

[0021] FIG4 is a schematic diagram of the B embodiment of the present invention;

[0022] In the figure: 1. valve body; 11. flow channel; 12. valve disc; 13. upper valve stem; 14. lower valve stem; 15. execution chamber; 21. turntable; 2. drive assembly; 3. locking assembly; 31. housing; 32. locking block; 33. locking groove; 4. linkage structure; 41. guide protrusion; 42. guide arc groove; 43. driving spring; 26. driven gear; 22. through hole; 23. rotating rod; 24. driving gear; 25. hand wheel; 121. first block; 122. second block; 123. left disk body; 124. right disk body; 5. sealing structure; 51. sleeve groove; 52. sealing ring; 53. limit ring; 6. disassembly structure; 61. connecting column; 62. bolt. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] Referring to Figures 1 to 4, a titanium alloy butterfly valve includes a valve body 1, a flow channel 11 for fluid to pass through is formed in the valve body 1, a valve disc 12 is arranged in the flow channel 11, the valve disc 12 is rotatably connected to an upper valve stem 13 and a lower valve stem 14, an execution chamber 15 is arranged at the upper end of the valve body 1, an opening and closing wheel that engages with the upper valve stem 13 to control the opening and closing of the valve disc is arranged in the execution chamber 15, a turntable 21 is arranged on the valve disc 12 along its circumferential rotation, a driving component 2 is arranged to drive the turntable 21 to rotate, a plurality of locking components 3 are arranged at intervals in the circumference of the turntable 21, and the locking component 3 includes a housing 31 fixedly arranged on the turntable 21 and rotating with the turntable 21, a locking block 32 is slidably arranged on the upper limit position of the housing 31, a locking groove 33 is arranged on the inner wall of the flow channel 11 for the locking block 32 to be inserted, and a linkage structure 4 for controlling the locking block 32 to enter and exit the locking groove 33, and the driving component 2 Cooperating with the linkage structure 4 to control the locking block 32 to enter and exit the locking groove 33, 14, the material of the valve body is specifically titanium alloy.

[0025] The linkage structure 4 includes a guide protrusion 41 formed at one end of the locking block 32 toward the locking groove 33, a guide arc groove 42 provided in the locking groove 33 to adapt to the guide protrusion 41, and a driving spring 43 driving the locking block 32 to move toward one side of the locking groove 33. The guide arc groove 42 cooperates with the guide protrusion 41 to rotate the turntable 21 to achieve separation of the two sides.

[0026] The driving assembly 2 includes a driven gear 26 fixedly arranged on the rotating disk 21 and coaxial therewith, a through hole 22 opened on the upper valve stem 13 and extending along its axis and connecting the execution chamber 15 and the driven gear 26, a rotating rod 23 rotatably arranged in the through hole 22, a driving gear 24 rotating with the rotating rod 23 and meshing with the driven gear 26, and a hand wheel 25 fixedly arranged on the rotating rod 23 and controlling the rotation of the driving gear 24.

[0027] A first stopper 121 and a second stopper 122 are fixedly arranged on the valve disc 12, and the locking block 32 moves between the first stopper 121 and the second stopper 122 along with the rotating disk 21; when the locking block 32 abuts against the first stopper 121 or the second stopper 122, the positioning locking block 32 corresponds to the locking groove 33; the valve disc 12 includes a left disc body 123 and a right disc body 124 fixedly connected to the left disc body 123, and the rotating disk 21 is rotatably arranged between the left disc body 123 and the right disc body 124.

[0028] A sealing structure 5 is provided between the left disc body 123 and the right disc body 124 and the inner wall of the flow channel 11. The two sealing structures 5 include sleeve grooves 51 opened in the circumference of the left disc body 123 and the right disc body 124, and the two sleeve grooves 51 are sleeved with sealing rings 52. When the valve disc 12 is locked, the two sealing rings 52 are provided with a limit ring 53 fixed to the inner wall of the flow channel 11 on the opposite side. A disassembly structure 6 is provided between the two valve discs 12 and the upper valve stem 13 and the lower valve stem 14. The disassembly structure 6 includes a connecting column 61 located between the two valve discs 12 and formed on the upper valve stem 13 and the lower valve stem 14, and a plurality of bolts 62 threadedly connected through the left disc body 123, the connecting column 61 and the right disc body 124.

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A titanium alloy butterfly valve, comprising a valve body (1), wherein a flow channel (11) for fluid to pass through is formed in the valve body (1), a valve flap (12) is arranged in the flow channel (11), the valve flap (12) is rotatably connected to an upper valve stem (13) and a lower valve stem (14), and an execution chamber (15) is arranged at the upper end of the valve body (1), characterized in that: A rotating disk (21) is provided on the valve disc (12) so as to rotate along its circumference, and a driving assembly (2) is provided for driving the rotating disk (21) to rotate. A plurality of locking assemblies (3) are provided at intervals in the circumference of the rotating disk (21). The locking assemblies (3) include a housing (31) that rotates with the rotating disk (21), a locking block (32) that is provided on the housing (31) for upper limit sliding, a locking groove (33) provided on the inner wall of the flow channel (11) for the locking block (32) to be inserted, and a linkage structure (4) for controlling the locking block (32) to enter and exit the locking groove (33). The driving assembly (2) cooperates with the linkage structure (4) to control the locking block (32) to enter and exit the locking groove (33).

2. The titanium alloy butterfly valve according to claim 1, characterized in that: The linkage structure (4) comprises a guide protrusion (41) formed at one end of the locking block (32) facing the locking groove (33), a guide arc groove (42) arranged in the locking groove (33) to adapt to the guide protrusion (41), and a driving spring (43) driving the locking block (32) to move toward one side of the locking groove (33), and the guide arc groove (42) cooperates with the guide protrusion (41) to rotate the rotating disk (21) to achieve separation of the two sides.

3. The titanium alloy butterfly valve according to claim 1, characterized in that: The driving assembly (2) comprises a driven gear (26) arranged on the rotating disk (21) and coaxial therewith, a through hole (22) arranged on the upper valve stem (13) and extending along its axis and connecting the execution chamber (15) and the driven gear (26), a rotating rod (23) rotatably arranged in the through hole (22), a driving gear (24) rotating with the rotating rod (23) and meshing with the driven gear (26), and a hand wheel (25) for controlling the rotation of the driving gear (24).

4. The titanium alloy butterfly valve according to claim 1, characterized in that: The valve disc (12) is provided with a first stopper (121) and a second stopper (122), and the locking block (32) moves between the first stopper (121) and the second stopper (122) along with the rotating disk (21); when the locking block (32) abuts against the first stopper (121) or the second stopper (122), the positioning locking block (32) corresponds to the locking groove (33).

5. The titanium alloy butterfly valve according to claim 1, characterized in that: The valve flap (12) comprises a left disc body (123) and a right disc body (124) connected to the left disc body (123), and the rotating disc (21) is rotatably arranged between the left disc body (123) and the right disc body (124).

6. The titanium alloy butterfly valve according to claim 5, characterized in that: A sealing structure (5) is provided between the left disc body (123) and the right disc body (124) and the inner wall of the flow channel (11), and the two sealing structures (5) include sleeve grooves (51) opened in the circumference of the left disc body (123) and the right disc body (124), the two sleeve grooves (51) are sleeved with sealing rings (52), and when the valve flap (12) is locked, the two sealing rings (52) are provided with a limit ring (53) fixed to the inner wall of the flow channel (11) on the opposite side.

7. The titanium alloy butterfly valve according to claim 1, characterized in that: A disassembly structure (6) is provided between the two valve flaps (12) and the upper valve stem (13) and the lower valve stem (14), and the disassembly structure (6) includes a connecting column (61) located between the two valve flaps (12) and formed on the upper valve stem (13) and the lower valve stem (14), and a plurality of bolts (62) threadedly connected through the left disk body (123), the connecting column (61) and the right disk body (124).

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