Limiting device of ball valve

Abstract

The utility model discloses a limiting device of a ball valve, which is applied to the field of valve body equipment, solves the technical problem that the opening and closing control process between a valve rod and a valve body of an existing ball valve is unstable, and adopts the technical scheme that the limiting device comprises the valve body and the valve rod movably connected with the valve body, a rotating sleeve block rotationally connected with the rotating supporting block in a sleeving mode is arranged at the end of the valve rod, a limiting assembly is arranged between the rotating supporting block and the rotating sleeve block, and the limiting assembly comprises a limiting inserting block fixed to the rotating supporting block, a locking sleeve block connected to the end, close to the rotating sleeve block, of the valve rod in a sleeving mode and a locking plug pin arranged on the valve rod. The locking sleeve block is movably connected with the limiting insertion block in an inserted mode, the valve rod is provided with a threaded hole allowing the locking plug pin to be adjusted in a spiral mode, the top end of the locking sleeve block is provided with an adjusting sliding groove allowing the locking plug pin to slide and move, and the technical effect that the ball valve is reliable and efficient under switching of the opening state and the closing state is guaranteed is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve body equipment field, especially a ball valve's stop device. BACKGROUND

[0002] The existing ball valve handle is positioned through two stoppers arranged on the handle and the convex block on the valve body, the handle block is mistaken or moved in use, the handle does not have the limiting and fixing function, and the stability and reliability in the switching process of the opening and closing state of the ball valve cannot be guaranteed. SUMMARY

[0003] The utility model discloses a ball valve's stop device, which has the advantages of reliable and efficient switching of the opening and closing state of the ball valve.

[0004] The above technical purpose of the utility model is realized through the following technical scheme: a ball valve's stop device, including valve body and the valve rod that is movably connected with valve body, its characterized in that: the valve body is equipped with rotating support block, the end of valve rod is equipped with the rotating sleeve block of rotating sleeve connection with rotating support block, the rotating support block and rotating sleeve block are equipped with the limiting component between, the limiting component includes the limiting plug that is fixed with rotating support block, the locking sleeve block that is sleeved in the one end of valve rod close to rotating sleeve block and the locking bolt that is arranged on valve rod, the locking sleeve block and limiting plug movably insert, the valve rod is equipped with the screw hole that is provided for the locking bolt screw adjustment, the top of locking sleeve block is equipped with the adjusting sliding slot that is provided for the sliding movement of locking bolt, the limiting component still includes the deviation correction guide ring block that is arranged at the bottom of rotating support block, the rotating sleeve block is equipped with the guide insertion groove block that cooperates with deviation correction guide ring block, the guide insertion groove block and deviation correction guide ring block slip and insert, the guide insertion groove block is equipped with the auxiliary limiting hole, the deviation correction guide ring block is equipped with a plurality of auxiliary insertion holes that cooperate with auxiliary limiting hole, the positioning pin is movably inserted in the auxiliary limiting hole.

[0005] Preferably, the deviation correction guide ring block is further provided with a limiting clamping block on both sides.

[0006] Preferably, a anti-dropping ring block is arranged on the positioning pin between the deviation correction guide ring block and the guide insertion groove block.

[0007] Preferably, a protective sleeve block is arranged on the end of the valve rod away from the rotating connection with the valve body, and a protective wave ridge block is arranged on the protective sleeve block.

[0008] Preferably, a rotating knob block is arranged on the top end of the locking bolt.

[0009] Preferably, a wear-resistant and anti-skid ridge is arranged on the side of the locking sleeve block away from the adjusting sliding slot.

[0010] In summary, the utility model has the following beneficial effects:

[0011] 1. By setting multiple sets of limiting components between the rotating support block and the rotating sleeve block, the flexible and efficient switching between the rotational opening and closing states of the valve stem and the valve body is realized. The operator can lock and flexibly adjust the state of the valve stem relative to the valve body by manual operation, which solves the problem of poor valve stem control stability in existing ball valve bodies, meets the requirements of flexible and efficient valve body opening and closing control, and is convenient and reliable to operate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram illustrating the structure of the ball valve in the embodiment;

[0013] Figure 2 yes Figure 1 Enlarged view of A in the middle;

[0014] Figure 3 This is a schematic diagram used to show the positions of the anti-detachment ring block and the positioning pin in the embodiment.

[0015] Reference numerals: 1. Valve body; 2. Valve stem; 3. Rotating support block; 4. Rotating sleeve block; 5. Limiting insert block; 6. Locking sleeve block; 7. Locking pin; 8. Threaded hole; 9. Adjusting slide groove; 10. Correcting guide ring block; 11. Guide slot block; 12. Auxiliary limiting hole; 13. Auxiliary insertion hole; 14. Positioning pin; 15. Limiting block; 16. Anti-detachment ring block; 17. Protective sleeve block; 18. Protective corrugated block; 19. Rotating knob block; 20. Wear-resistant and anti-slip ridge. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Example: A limiting device for a ball valve, such as Figure 1 As shown, the valve includes a valve body 1 and a valve stem 2 movably connected to the valve body 1. The valve body 1 is switched between opening and closing by operating the valve stem 2. A rotating support block 3 is provided on the valve body 1, and a rotating sleeve block 4 is provided at the end of the valve stem 2, which is rotatably sleeved with the rotating support block 3. As the valve stem 2 rotates, the relative rotation between the rotating support block 3 and the rotating sleeve block 4 is maintained.

[0018] A limiting component is provided between the rotating support block 3 and the rotating sleeve block 4 to achieve a fixed limit on the state of the valve stem 2 relative to the valve body 1 after rotational opening and closing. The limiting component includes a limiting insert 5 fixed to the rotating support block 3, a locking sleeve 6 sleeved on the end of the valve stem 2 near the rotating sleeve block 4, and a locking pin 7 provided on the valve stem 2. The locking sleeve 6 is movably inserted into the limiting insert 5. When the valve stem 2 and the valve body 1 are in the initial position, the valve body 1 remains closed. At this time, the locking sleeve 6 is engaged with the limiting insert 5, restricting the free movement of the valve stem 2.

[0019] Meanwhile, the valve rod 2 is provided with a threaded hole 8 for screwing the locking bolt 7, when the locking sleeve block 6 is inserted with the limiting plug block 5, the locking sleeve block 6 needs to be further limited, the top end of the locking bolt 7 is provided with a rotating knob block 19, by screwing the locking bolt 7 with the threaded hole 8, the movement of the locking sleeve block 6 is limited; when the contact limiting effect is needed, the operator reversely rotates the locking bolt 7, so that the end of the locking bolt 7 releases the limitation of the locking sleeve block 6, the top end of the locking sleeve block 6 is provided with an adjusting sliding groove 9 for sliding movement of the locking bolt 7, at this time the operator holds the valve rod 2, at the same time the index finger presses the bottom of the locking sleeve block 6 and applies an upward sliding force, so that the locking sleeve block 6 slides along the valve rod 2, the insertion with the limiting plug block 5 is released, and the valve rod 2 can be freely rotated. In order to improve the stability and reliability of the manual operation process, the valve rod 2 is provided with a protective sleeve block 17 away from the rotating connection with the valve body 1, the protective sleeve block 17 is provided with a protective wave ridge block 18, which improves the anti-skid stability of the manual operation process, and the side of the locking sleeve block 6 away from the adjusting sliding groove 9 is provided with a wear-resistant anti-skid ridge 20, which further improves the stable and smooth force control of the locking sleeve block 6.

[0020] As shown in Figure 1 and Figure 2 , in order to further improve the stability of the valve rod 2 operation process, the limiting assembly further includes a deviation correcting guide ring block 10 arranged at the bottom of the rotating support block 3, and a guide slot block 11 arranged on the rotating sleeve block 4 and matched with the deviation correcting guide ring block 10, the guide slot block 11 is slidably inserted with the deviation correcting guide ring block 10, so that the guide slot block 11 always moves along the deviation correcting guide ring block 10 during the rotation adjustment of the valve rod 2. The two sides of the deviation correcting guide ring block 10 are also provided with limiting clamping blocks 15, which satisfy the force adjustment of the valve rod 2 within a controllable range, and avoid control deviation caused by excessive rotation. The guide slot block 11 is provided with an auxiliary limiting hole 12, and the deviation correcting guide ring block 10 is provided with a plurality of auxiliary insertion holes 13 matched with the auxiliary limiting hole 12, and a positioning pin 14 is movably inserted in the auxiliary limiting hole 12. Once the valve rod 2 is rotated to a specified position, the operator can also fix the position of the valve rod 2 through the control of the positioning pin 14. The positioning pin 14 between the deviation correcting guide ring block 10 and the guide slot block 11 is provided with an anti-disengagement ring block 16 (as shown in Figure 3 ), which always keeps the positioning pin 14 slidably inserted in the guide slot block 11, when the limiting locking is needed, the operator presses the positioning pin 14 to complete the clamping with the specified auxiliary insertion hole 13, when the limiting locking state is needed to be released, the positioning pin 14 is pulled out, so that the valve rod 2 can be flexibly rotated and adjusted, which guarantees the efficient and reliable valve body 1 opening and closing control process.

[0021] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a modification without creative contribution can be made to the embodiment according to needs by a person skilled in the art after reading the specification, but as long as the modification is within the scope of the claims of the utility model, the utility model is protected by the patent law.

Claims

1. A limiting device of a ball valve, comprising a valve body (1) and a valve stem (2) movably connected with the valve body (1), characterized in that: The valve body (1) is provided with a rotating support block (3), and the end of the valve rod (2) is provided with a rotating sleeve block (4) rotatably sleeved with the rotating support block (3). A limiting assembly is arranged between the rotating support block (3) and the rotating sleeve block (4). The limiting assembly comprises a limiting plug (5) fixed with the rotating support block (3), a locking sleeve block (6) sleeved on the valve rod (2) near one end of the rotating sleeve block (4), and a locking bolt (7) arranged on the valve rod (2). The locking sleeve block (6) is movably inserted with the limiting plug (5). The valve rod (2) is provided with a threaded hole (8) for screw adjustment of the locking bolt (7). The top end of the locking sleeve block (6) is provided with an adjusting sliding groove (9) for sliding movement of the locking bolt (7). The limiting assembly further comprises a deviation correcting guide ring block (10) arranged at the bottom of the rotating support block (3). The rotating sleeve block (4) is provided with a guide slot block (11) matched with the deviation correcting guide ring block (10). The guide slot block (11) is movably inserted with the deviation correcting guide ring block (10). The guide slot block (11) is provided with an auxiliary limiting hole (12). The deviation correcting guide ring block (10) is provided with a plurality of auxiliary insertion holes (13) matched with the auxiliary limiting hole (12). The auxiliary limiting hole (12) movably inserts a positioning pin (14).

2. The ball valve position limiting device of claim 1, wherein: The two sides of the deviation correcting guide ring block (10) are further provided with limiting clamping blocks (15).

3. The ball valve position-limiting device of claim 1, wherein: The positioning pin (14) between the deviation correcting guide ring block (10) and the guide slot block (11) is provided with an anti-dropping ring block (16).

4. The ball valve position-limiting device of claim 1, wherein: The valve rod (2) is provided with a protective sleeve block (17) away from the rotating connection with the valve body (1). The protective sleeve block (17) is provided with a protective wave ridge block (18).

5. The ball valve positioner of claim 1 wherein: The top end of the locking bolt (7) is provided with a rotating knob block (19).

6. The ball valve positioner of claim 1 wherein: The side of the locking sleeve block (6) away from the adjusting sliding groove (9) is provided with a wear-resistant anti-skid ridge (20).

Images