Internal thread ball valve with locking mechanism

Abstract

The utility model relates to the technical field of valves, and provides an internal thread ball valve with a locking mechanism, which comprises a valve body, a ball body is arranged at the top of the valve body, a valve rod is arranged at the top end of the ball body, a support frame is arranged at the top end of the valve body, a handle is arranged at the top end of the valve rod, and a limiting frame is arranged on one side of the top end of the support frame. According to the ball valve, the fixing assembly can be driven to release the fixing state between the handle and the limiting frame by pressing the limiting assembly downwards, so that the valve rod can be driven to rotate the ball body by rotating the handle, and the on-off state of the interior of the valve body can be switched; according to the ball valve, the handle and the supporting frame can be kept in the locked state through the fixing assembly, the situation that the handle is touched by mistake when the ball valve is in the opened or closed state can be avoided, and the problem that an existing ball valve is inconvenient to lock the handle in the conducted state is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and in particular to an internally threaded ball valve with a locking mechanism. Background Art

[0002] A ball valve is a valve whose opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can be used for regulating and controlling fluids. Ball valves are widely used in oil refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electricity, municipal administration, steel and other industries.

[0003] After searching, the internal thread ball valve with a locking mechanism described in the announcement number CN213575688U includes a valve body, a ball and a valve stem, a handle is provided at the top of the valve stem, one end of the valve body is connected to a valve cover by threaded engagement, the end of the valve cover is connected to a nut sleeve by threaded engagement, the end sleeve of the handle connected to the valve stem is provided with a limit ring, the lower end face of the limit ring has a groove, the interior of the groove has a through hole penetrating the limit ring, and a locking seat is provided on the top side wall of the valve body. In the utility model, the handle is rotated, the handle drives the valve stem to rotate, the valve stem drives the ball to rotate, when the ball turns from the open state to the closed state, during the rotation process, the wheel at the top of the lock pin rolls inside the groove, when the ball is in the closed state, the lock pin enters the interior of the through hole under the action of the spring, and the handle is locked to prevent accidental contact with the handle, resulting in the ball not being closed tightly and leakage.

[0004] However, the above-mentioned ball valve still has the following problem: the ball valve drives the locking pin into the through hole under the action of the spring to lock the handle, preventing the handle from being opened when the ball valve is closed, but the ball valve cannot lock the handle when it is open, causing the ball valve to be accidentally touched and closed when it is open. Utility Model Content

[0005] The utility model provides an internal thread ball valve with a locking mechanism, which solves the problem in the prior art that it is inconvenient to lock the handle of the ball valve in a conducting state.

[0006] The technical solution of the utility model is as follows: an internally threaded ball valve with a locking mechanism, comprising a valve body, a sphere is arranged on the top of the valve body, a valve stem is arranged on the top of the sphere, a support frame is arranged on the top of the valve body, a handle is arranged on the top of the valve stem, a limit frame is arranged on one side of the top of the support frame, a through hole is arranged in the middle of the bottom end of the limit frame, and a fixing component capable of locking the rotated valve stem is arranged on one side of the bottom end of the handle.

[0007] Preferably, the fixing assembly includes a fixing frame fixedly connected to one side of the bottom end of the handle, a movable rod is vertically slidably connected to the middle part of the fixing frame, the bottom end of the movable rod is fixedly connected to a fixing plate through a through hole, left-right symmetrical positioning holes are provided on both sides of the bottom of the limiting frame, and both sides of the top end of the fixing plate are fixedly connected with positioning assemblies capable of preventing the fixing plate from rubbing against the bottom of the limiting frame when moving, the positioning assemblies are respectively slidably connected to the inside of the positioning holes, and a limiting assembly capable of preventing relative rotation between the movable rod and the fixing frame is provided on one side of the top end of the handle.

[0008] Preferably, a limit plate is fixedly sleeved on the top end of the movable rod, a first spring is fixedly connected to the inner bottom wall of the fixing frame, and a top end of the first spring is fixedly connected to the limit plate.

[0009] Preferably, the positioning assembly includes positioning sleeves fixedly connected to both sides of the top of the fixing plate, the positioning sleeves are respectively slidably connected to the inside of the positioning holes, the top of the inner cavity of the positioning sleeve is fixedly connected to a limiting ring, and the inside of the limiting ring is slidably connected to a ball.

[0010] Preferably, the inner bottom wall of the positioning sleeve is fixedly connected with a second spring, the top end of the second spring is fixedly connected with a support ring, and the top of the support ring is sleeved on the bottom of the ball.

[0011] Preferably, the limiting assembly includes a hexagonal hole opened on one side of the handle, and the top end of the movable rod is fixedly connected with a hexagonal pressing block, and the hexagonal pressing block is slidably connected to the inside of the hexagonal hole.

[0012] Preferably, sealing rings are fixedly connected to both sides of the inner cavity of the valve body, and the sealing rings are sleeved on both sides of the sphere.

[0013] Preferably, a connecting pipe is threadedly connected to one side of the inner cavity of the valve body.

[0014] The beneficial effects of the utility model are:

[0015] The utility model discloses that by pressing down the limit assembly, the fixing assembly can be driven to release the fixed state between the handle and the limit frame, so that by rotating the handle, the valve stem can be driven to rotate the ball, so that the open and closed state inside the valve body can be switched, and the fixing assembly can keep the handle and the support frame in a locked state, so as to avoid accidental touching of the handle when the ball valve is in an open or closed state, thereby solving the problem that it is inconvenient to lock the handle of the existing ball valve in a conducting state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1This is a schematic diagram of the structure of an internally threaded ball valve with a locking mechanism proposed by the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the fixing assembly proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the positioning component structure proposed by the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the limit assembly proposed by the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the top of the support frame proposed by the utility model;

[0023] In the figure: 1. valve body; 2. support frame; 3. valve stem; 4. handle; 5. limit assembly; 51. hexagonal hole; 52. hexagonal pressure block; 6. limit frame; 7. fixing assembly; 71. fixing frame; 72. limit plate; 73. first spring; 74. movable rod; 75. fixing plate; 76. positioning assembly; 761. positioning sleeve; 762. second spring; 763. support ring; 764. ball; 765. limit ring; 77. positioning hole; 8. through hole; 9. connecting pipe; 10. ball; 11. sealing ring. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , Figure 2 and Figure 6 The utility model provides a technical solution of an internally threaded ball valve with a locking mechanism: an internally threaded ball valve with a locking mechanism, comprising a valve body 1, a ball 10 is arranged on the top of the valve body 1, sealing rings 11 are fixedly connected to both sides of the inner cavity of the valve body 1, the sealing rings 11 are sleeved on both sides of the ball 10, a valve stem 3 is arranged at the top of the ball 10, a support frame 2 is arranged at the top of the valve body 1, a handle 4 is arranged at the top of the valve stem 3, a limit frame 6 is arranged on one side of the top of the support frame 2, a through hole 8 is arranged in the middle of the bottom end of the limit frame 6, a fixing component 7 capable of locking the rotated valve stem 3 is arranged on one side of the bottom end of the handle 4, and a connecting pipe 9 is threadedly connected to one side of the inner cavity of the valve body 1.

[0026] See also Figure 3 The fixing assembly 7 includes a fixing frame 71 fixedly connected to one side of the bottom end of the handle 4, a movable rod 74 is vertically slidably connected to the middle of the fixing frame 71, and the bottom end of the movable rod 74 is fixedly connected to a fixing plate 75 through a through hole 8. Both sides of the bottom of the limiting frame 6 are provided with left-right symmetrical positioning holes 77, and both sides of the top of the fixing plate 75 are fixedly connected with positioning assemblies 76 that can prevent the fixing plate 75 from rubbing against the bottom of the limiting frame 6 when moving. The positioning assemblies 76 are respectively slidably connected to the inside of the positioning holes 77, and one side of the top of the handle 4 is provided with a limiting assembly that can prevent the movable rod 74 and the fixing frame 71 from rotating relative to each other. 5. The top fixing sleeve of the movable rod 74 is provided with a limit plate 72, and the inner bottom wall of the fixing frame 71 is fixedly connected with a first spring 73. The top of the first spring 73 is fixedly connected to the limit plate 72. The movable rod 74 pushes the fixing plate 75 to move downward, so that the positioning assembly 76 is moved out from the inside of the positioning hole 77, which can drive the handle 4 to rotate, so that the handle 4 can drive the ball 10 to rotate ninety degrees, so that the inside of the ball valve is conductive, and then the first spring 73 drives the fixing plate 75 to move upward, drives the positioning sleeve 761 to be inserted into the inside of the positioning hole 77, fixes the fixing plate 75, and can lock the handle 4.

[0027] See also Figure 4 The positioning assembly 76 includes a positioning sleeve 761 fixedly connected to both sides of the top of the fixing plate 75, and the positioning sleeves 761 are slidably connected to the inside of the positioning hole 77 respectively. The top of the inner cavity of the positioning sleeve 761 is fixedly connected to a limiting ring 765, and the inside of the limiting ring 765 is slidably connected with a ball 764. The inner bottom wall of the positioning sleeve 761 is fixedly connected to a second spring 762, and the top of the second spring 762 is fixedly connected to a support ring 763. The top of the support ring 763 is sleeved on the bottom of the ball 764. The support ring 763 is pushed upward by the second spring 762, so that the support ring 763 drives the ball 764 to press against the inside of the limiting ring 765, so that the top of the ball 764 rolls at the bottom of the limiting frame 6 to prevent the fixing plate 75 from rubbing against the bottom of the limiting frame 6.

[0028] See also Figure 5 The limit assembly 5 includes a hexagonal hole 51 opened on one side of the handle 4, and a hexagonal pressure block 52 is fixedly connected to the top of the movable rod 74. The hexagonal pressure block 52 is slidably connected to the inside of the hexagonal hole 51. By pressing the hexagonal pressure block 52 downward to slide inside the hexagonal hole 51, the movable rod 74 can be driven to push the fixed plate 75 to move downward.

[0029] The working principle and use process of the utility model are as follows: when the ball valve is in a closed state, the first spring 73 pushes the limit plate 72 upward, so that the movable rod 74 drives the fixed plate 75 to fit the bottom of the limit frame 6, so that the positioning component 76 is inserted into the positioning hole 77. When the ball valve needs to be turned on, the hexagonal pressing block 52 is pressed downward to slide inside the hexagonal hole 51, which can drive the movable rod 74 to push the fixed plate 75 to move downward, so that the positioning component 76 is moved out of the positioning hole 77, and the handle 4 is turned to drive the valve stem 3 to close the ball valve. The body 10 is rotated ninety degrees. In the process of rotating the handle 4, the hexagonal pressure block 52 is released, and the first spring 73 is acted upon to drive the fixing plate 75 to move upward, so that the ball 764 is rolled and connected to the bottom of the limiting frame 6, and then the fixing frame 71 slides to the other side inside the limiting frame 6 to make the inside of the ball valve conductive, and then the limiting plate 72 is pushed upward by the first spring 73, which can drive the positioning sleeve 761 to be inserted into the positioning hole 77, fix the fixing plate 75, and lock the handle 4.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An internally threaded ball valve with a locking mechanism, comprising a valve body (1), characterized in that: A sphere (10) is arranged at the top of the valve body (1), a valve stem (3) is arranged at the top of the sphere (10), a support frame (2) is arranged at the top of the valve body (1), a handle (4) is arranged at the top of the valve stem (3), a limit frame (6) is arranged on one side of the top of the support frame (2), a through hole (8) is arranged in the middle of the bottom of the limit frame (6), and a fixing component (7) capable of locking the valve stem (3) after rotation is arranged on one side of the bottom of the handle (4).

2. An internally threaded ball valve with a locking mechanism according to claim 1, characterized in that: The fixing assembly (7) comprises a fixing frame (71) fixedly connected to one side of the bottom end of the handle (4); a movable rod (74) is vertically slidably connected to the middle of the fixing frame (71); the bottom end of the movable rod (74) passes through the through hole (8) and is fixedly connected to a fixing plate (75); both sides of the bottom of the limiting frame (6) are provided with left-right symmetrical positioning holes (77); both sides of the top of the fixing plate (75) are fixedly connected with positioning assemblies (76) capable of preventing the fixing plate (75) from rubbing against the bottom of the limiting frame (6) when moving; the positioning assemblies (76) are respectively slidably connected to the inside of the positioning holes (77); and a limiting assembly (5) capable of preventing the movable rod (74) and the fixing frame (71) from rotating relative to each other is provided on one side of the top of the handle (4).

3. An internally threaded ball valve with a locking mechanism according to claim 2, characterized in that: The top end of the movable rod (74) is fixedly sleeved with a limit plate (72), the inner bottom wall of the fixed frame (71) is fixedly connected to a first spring (73), and the top end of the first spring (73) is fixedly connected to the limit plate (72).

4. An internally threaded ball valve with a locking mechanism according to claim 2, characterized in that: The positioning assembly (76) comprises positioning sleeves (761) fixedly connected to both sides of the top of the fixing plate (75); the positioning sleeves (761) are slidably connected to the inside of the positioning holes (77) respectively; a limiting ring (765) is fixedly connected to the top of the inner cavity of the positioning sleeve (761); and a ball (764) is slidably connected to the inside of the limiting ring (765).

5. An internally threaded ball valve with a locking mechanism according to claim 4, characterized in that: The inner bottom wall of the positioning sleeve (761) is fixedly connected to a second spring (762), the top end of the second spring (762) is fixedly connected to a support ring (763), and the top of the support ring (763) is sleeved on the bottom of the ball (764).

6. An internally threaded ball valve with a locking mechanism according to claim 2, characterized in that: The limiting assembly (5) comprises a hexagonal hole (51) formed on one side of the handle (4); a hexagonal pressing block (52) is fixedly connected to the top end of the movable rod (74); and the hexagonal pressing block (52) is slidably connected to the inside of the hexagonal hole (51).

7. An internally threaded ball valve with a locking mechanism according to claim 1, characterized in that: Sealing rings (11) are fixedly connected to both sides of the inner cavity of the valve body (1), and the sealing rings (11) are sleeved on both sides of the ball (10).

8. The internally threaded ball valve with a locking mechanism according to claim 1, characterized in that: A connecting pipe (9) is threadedly connected to one side of the inner cavity of the valve body (1).

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