Lock-off hard seal fully welded ball valve

Abstract

The present invention discloses a locking type hard-sealed fully welded ball valve, comprising a valve, a connecting pipe fixedly connected to the top of the middle position of the valve, and a handle rotatably connected to the connecting pipe, a central axis is arranged at the inner center position of the connecting pipe, a transmission gear is arranged between the central axis and the handle, and the transmission gear is meshedly connected to the central axis and the handle, and an end cap is fixedly connected to the top of the connecting pipe. In the present invention, after the handle is rotated to a specified position, a control mechanism is docked in the connecting port, thereby rotating the rotating shaft, and the rotating shaft moves in the movable groove during the rotation process, thereby moving along the movable groove to the top of the movable groove, thereby losing the meshing connection with the first latching tooth, and the ball is engaged in the limit groove, thereby fixing the position of the transmission gear, and the handle loses control of the central axis due to the loss of transmission of the transmission gear.

Description

Technical Field

[0001] The invention relates to the technical field of fully welded ball valves, in particular to a locked hard-sealed fully welded ball valve. Background Art

[0002] It is mainly used to cut off or connect the medium in the pipeline, and can also be used for fluid regulation and control. The ball valve has a 90-degree rotation action. The plug body is a sphere with a circular through hole or channel passing through its axis. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to rotate 90 degrees and a very small torque to close tightly.

[0003] During use, the existing fully welded ball valve needs to be fixed in position to prevent its position from changing, which will affect the function of the ball valve to a certain extent. The method of adding a lock externally is troublesome and inconvenient to manage. Summary of the invention

[0004] The purpose of the present invention is to propose a locking type hard-sealed fully welded ball valve in order to solve the problem.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A locking-type hard-sealed fully welded ball valve comprises a valve, a connecting pipe is fixedly connected to the top of the middle position of the valve, and a handle is rotatably connected to the connecting pipe, a central axis is arranged at the inner center position of the connecting pipe, a transmission gear is arranged between the central axis and the handle, and the transmission gear is meshedly connected to the central axis and the handle, an end cover is fixedly connected to the top of the connecting pipe, and a rotating shaft is rotatably connected to the inside of the end cover, and a connecting port is embedded at one horizontal end of the rotating shaft, one end of the rotating shaft is rotatably connected to the transmission gear, and a movable groove is opened on the vertical end wall of the end cover, and the movable groove is arranged in an inclined arc shape.

[0007] As a further description of the above technical solution:

[0008] A sleeve rod is slidably embedded in the vertical end of the rotating shaft, and the other end of the sleeve rod is sleeved with a first connecting piece, and both ends of the sleeve rod are fixedly connected with extrusion springs.

[0009] As a further description of the above technical solution:

[0010] A second connecting member is arranged below the first connecting member, and a lower end surface of the second connecting member is arranged corresponding to the movable groove.

[0011] As a further description of the above technical solution:

[0012] A ball is embedded in the center of the bottom end of the second connecting member, and the ball is rollingly connected to the cross section of the movable groove. A limiting groove is provided at the top of the lower cross section of the movable groove.

[0013] As a further description of the above technical solution:

[0014] The top diameter of the central shaft is smaller than the bottom diameter, and a first latching tooth is arranged at a position where the central shaft has a larger diameter, and a horizontal plane of the first latching tooth is located at a middle position of the height of the movable groove.

[0015] As a further description of the above technical solution:

[0016] A second latching tooth is arranged on the inner side of the bottom end of the handle, and the second latching tooth, the first latching tooth and the transmission gear are meshed and transmitted.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] In the present invention, when the handle is rotated, the transmission gear is transmitted through the second latch tooth, and the transmission gear further transmits the first latch tooth, thereby transmitting the central axis to complete the control of the opening and closing of the valve. After the handle is rotated to the specified position, the control mechanism is docked in the connecting port to rotate the rotating shaft. During the rotation of the rotating shaft, the ball moves in the movable groove, thereby moving along the movable groove to the top of the movable groove, thereby losing the meshing connection with the first latch tooth, and the ball is engaged in the limit groove, thereby fixing the position of the transmission gear. Due to the loss of transmission of the transmission gear, the handle loses control of the central axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the locked hard-sealed fully welded ball valve proposed by the present invention;

[0020] Figure 2 A longitudinal section of the locking type hard-sealed fully welded ball valve proposed by the present invention;

[0021] Figure 3 This is a side view of the inner tube of the locking type hard-sealed fully welded ball valve proposed by the present invention;

[0022] Figure 4 This is a structural diagram of the transmission mechanism of the locking type hard-sealed fully welded ball valve proposed by the present invention;

[0023] Figure 5 It is a partial cross-sectional view of the transmission rod of the locking type hard-sealed fully welded ball valve proposed by the present invention.

[0024] Legend:

[0025] 1. Valve; 2. Connecting pipe; 3. Handle; 4. Center axis; 401. First latch tooth; 402. Second latch tooth; 5. End cover; 6. Rotating shaft; 7. Connecting port; 8. First connecting piece; 9. Sleeve rod; 10. Transmission gear; 11. Second connecting piece; 12. Ball; 13. Movable groove; 14. Limiting groove; 15. Extrusion spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0027] Example 1

[0028] See also Figure 1-5The invention discloses a locking type hard-sealed fully welded ball valve, comprising a valve 1, a connecting pipe 2 is fixedly connected to the top of the middle position of the valve 1, and a handle 3 is rotatably connected to the connecting pipe 2, the longitudinal section between the connecting pipe 2 and the handle 3 is a concave-convex inlaid structure, a central axis 4 is arranged at the inner center position of the connecting pipe 2, and a transmission gear 10 is arranged between the central axis 4 and the handle 3, and the transmission gear 10 is meshedly connected with the central axis 4 and the handle 3, the top diameter of the central axis 4 is smaller than the bottom diameter, and a first latch tooth 401 is arranged at a position where the diameter of the central axis 4 is larger, and the horizontal plane of the first latch tooth 401 is located at the movable groove 13 At the middle position of the height, a second latch tooth 402 is provided on the inner side of the bottom end of the handle 3, and the second latch tooth 402, the first latch tooth 401 and the transmission gear 10 are meshed and transmitted. When the handle 3 is rotated, the transmission gear 10 is transmitted through the second latch tooth 402, and the transmission gear 10 further transmits the first latch tooth 401, thereby transmitting the central axis 4 to complete the control of the opening and closing of the valve 1. The top end of the connecting pipe 2 is fixedly connected with the end cover 5, and the internal rotation of the end cover 5 is connected with the rotating shaft 6. The rotating shaft 6 is L-shaped, and one end of the horizontal end of the rotating shaft 6 is embedded with a connecting port 7. The connecting port 7 In order to connect the device with the external control mechanism to facilitate the control of the rotation of the rotating shaft 6, one end of the rotating shaft 6 is rotatably connected with the transmission gear 10, a sleeve rod 9 is slidably embedded inside the vertical end of the rotating shaft 6, and the other end of the sleeve rod 9 is sleeved with a first connecting member 8, and both ends of the sleeve rod 9 are fixedly connected with an extrusion spring 15, a second connecting member 11 is arranged below the first connecting member 8, and the lower end surface of the second connecting member 11 is arranged corresponding to the movable groove 13, a ball 12 is embedded at the center position of the bottom end of the second connecting member 11, and the ball 12 is rollingly connected to the cross section of the movable groove 13, and a limiting groove 14 is provided at the top of the lower cross section of the movable groove 13 A movable groove 13 is provided on the vertical end wall of the end cover 5, and the movable groove 13 is arranged in an inclined arc shape. After the handle 3 is rotated to the specified position, the control mechanism is docked in the connecting port 7, so that the rotating shaft 6 is rotated. During the rotation of the rotating shaft 6, the ball 12 moves in the movable groove 13, and moves along the movable groove 13 to the top of the movable groove 13, thereby losing the meshing connection with the first locking tooth 401, and the ball 12 is engaged in the limiting groove 14, thereby fixing the position of the transmission gear 10. Due to the loss of transmission of the transmission gear 10, the handle 3 loses control of the central axis 4.

[0029] Working principle: When in use, when the handle 3 is rotated, the transmission gear 10 is transmitted through the second latch tooth 402, and the transmission gear 10 then transmits the first latch tooth 401, thereby transmitting the central axis 4 to complete the control of the opening and closing of the valve 1. After the handle 3 is rotated to the specified position, the control mechanism is docked in the connecting port 7 to rotate the rotating shaft 6. During the rotation of the rotating shaft 6, the ball 12 moves in the movable groove 13, thereby moving along the movable groove 13 to the top of the movable groove 13, thereby losing the meshing connection with the first latch tooth 401, and the ball 12 is engaged in the limit groove 14, thereby fixing the position of the transmission gear 10. Due to the loss of transmission of the transmission gear 10, the handle 3 loses control of the central axis 4.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A locking type hard-sealed fully welded ball valve, comprising a valve (1), wherein a connecting pipe (2) is fixedly connected to the top of the middle position of the valve (1), and a handle (3) is rotatably connected to the connecting pipe (2), a central axis (4) is arranged at the inner center position of the connecting pipe (2), and a transmission gear (10) is arranged between the central axis (4) and the handle (3), and the transmission gear (10) is meshingly connected to the central axis (4) and the handle (3), characterized in that: The top end of the connecting pipe (2) is fixedly connected to an end cover (5), and the interior of the end cover (5) is rotatably connected to a rotating shaft (6), and a connecting port (7) is embedded at one horizontal end of the rotating shaft (6), and one end of the rotating shaft (6) is rotatably connected to a transmission gear (10), and a movable groove (13) is provided on a vertical end wall of the end cover (5), and the movable groove (13) is arranged in an inclined arc shape; A sleeve rod (9) is slidably embedded in the vertical end of the rotating shaft (6), and the other end of the sleeve rod (9) is sleeved with a first connecting member (8), and both ends of the sleeve rod (9) are fixedly connected to a compression spring (15); A second connecting member (11) is arranged below the first connecting member (8), and a lower end surface of the second connecting member (11) is arranged corresponding to the movable groove (13); A ball (12) is embedded in the center of the bottom end of the second connecting member (11), and the ball (12) is rollingly connected to the cross section of the movable groove (13), and a limiting groove (14) is provided at the top of the lower cross section of the movable groove (13); The diameter of the top end of the central shaft (4) is smaller than the diameter of the bottom end, and a first latching tooth (401) is provided at a position where the diameter of the central shaft (4) is larger, and the horizontal plane of the first latching tooth (401) is located at a middle position of the height of the movable groove (13); A second latching tooth (402) is provided on the inner side of the bottom end of the handle (3), and the second latching tooth (402), the first latching tooth (401) and the transmission gear (10) are meshed and transmitted.

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