Lifting marking structure for regulating valve

Abstract

The utility model relates to the technical field of valve bodies, in particular to a lifting marking structure for a regulating valve, which comprises a valve body, a valve rod used for lifting on the valve body and a hand wheel used for driving the valve rod to lift, the valve rod and the hand wheel are coaxially fixed, the hand wheel is provided with an indicating rod which is convenient for a worker to visually observe a valve position, and the indicating rod is arranged on the valve body. The end, away from the hand wheel, of the indicating rod vertically slides on the valve body, when a worker rotates the hand wheel, the valve rod ascends and descends along with the hand wheel, meanwhile, the indicating rod ascends and descends along with the hand wheel, and therefore the worker does not need to speculate the position of the valve rod through conversion of the rotation angle of the hand wheel any more, and valve position information is visually obtained through the indicating rod; the accuracy and the efficiency of judging the valve position are greatly improved, and the opening degree of the regulating valve can be conveniently and accurately regulated and controlled.

Description

Technical Field

[0001] This application relates to the field of valve body technology, and in particular to a lifting mark structure for a regulating valve. Background Technology

[0002] Currently, control valves are widely used in petroleum, chemical, and power industries as key control components in industrial pipeline systems. Their core function is to precisely regulate the flow or pressure of the medium through the lifting and lowering movement of the valve stem. Traditional control valves typically consist of a valve body, valve stem, and drive handwheel. Operators control the valve opening and closing degree by rotating the drive handwheel to move the valve stem.

[0003] Currently, most control valves rely on the rotation angle of the drive handwheel to indirectly reflect the valve stem position. However, adjusting the valve stem in this way makes it difficult to accurately achieve the expected valve position, and it is difficult for operators to intuitively judge the actual opening degree of the valve, which is an area that needs improvement. Utility Model Content

[0004] To allow for direct observation of the valve position, this application provides a lifting mark structure for a regulating valve.

[0005] This application provides a lifting mark structure for a regulating valve, which adopts the following technical solution:

[0006] A lifting and lowering marking structure for a regulating valve includes a valve body, a valve stem for lifting and lowering on the valve body, and a handwheel for driving the valve stem to lift and lower. The valve stem is coaxially fixed with the handwheel, and the handwheel is provided with an indicator rod for easy observation of the valve position by the operator. The end of the indicator rod away from the handwheel slides vertically on the valve body.

[0007] By adopting the above technical solution, when the operator turns the handwheel, the valve stem rises and falls with the handwheel, and the indicator rod also rises and falls with the handwheel. This eliminates the need for the operator to calculate the valve stem position by turning the handwheel rotation angle. The valve position information can be obtained intuitively through the indicator rod, which greatly improves the accuracy and efficiency of judging the valve position and facilitates precise control of the opening and closing degree of the regulating valve.

[0008] Preferably, the handwheel is coaxially provided with an annular washer and a collar resting on the annular washer. The annular washer is fixedly mounted on the handwheel, and the upper surface of the annular washer and the lower surface of the collar form an abutting fit. One end of the indicator rod is connected to the side wall of the collar, and the other end is vertically slidably mounted on the valve body.

[0009] By adopting the above technical solution, the ring gasket provides stable support for the collar, preventing it from falling off the handwheel. When the operator rotates the handwheel to raise or lower the valve stem, it also raises or lowers the ring gasket, which in turn raises or lowers the collar. This collar then raises or lowers the indicator rod connected to it, allowing the indicator rod to clearly indicate the valve position, enabling the operator to understand the valve position more intuitively.

[0010] Preferably, a limiting block is provided on the side wall of the valve body, and a limiting groove is provided on the limiting block. The end of the indicator rod away from the collar forms a sliding fit with the limiting groove.

[0011] By adopting the above technical solution, the indicator rod and the limiting groove form a sliding fit. The limiting groove provides precise guidance and limiting effect for the vertical sliding of the indicator rod, so that the indicator rod can slide stably in the limiting groove, preventing the indicator rod from deviating or shaking during the movement, ensuring the accuracy and stability of the indication, and further improving the reliability of valve position observation.

[0012] Preferably, the indicator rod is provided with indicator lines, and multiple indicator lines are provided at intervals.

[0013] By adopting the above technical solution and using multiple indicator lines on the indicator rod, the indicator lines at different positions correspond to different lifting heights of the valve stem, i.e. different valve positions. By observing the relative relationship between the indicator lines and a certain reference position on the valve body, the operator can quickly and accurately determine the current valve position. Compared with a single indicator line, this increases the accuracy and information richness of valve position determination, making it easier to perform more detailed control of the regulating valve.

[0014] Preferably, the indicator rod includes a turning rod, a vertical sliding rod, and a locking bolt. One end of the vertical sliding rod is provided with a first sliding groove, and the other end is slidably engaged with a limiting groove. One end of the turning rod is threaded to the side wall of the collar, and the other end is slidably engaged with the first sliding groove. The turning rod and the vertical sliding rod are locked and limited by the locking bolt.

[0015] By adopting the above technical solution, the turning rod is threadedly connected to the side wall of the collar, and the vertical sliding rod slides in the limiting groove. At the same time, the turning rod and the first sliding groove of the vertical sliding rod form a sliding fit, and the two are locked and limited by locking bolts. This design allows the length of the indicator rod to be adjusted according to the actual situation, so the indicator rod can adapt to regulating valves with different heights and valve stem strokes, thus enhancing the versatility and applicability of the indicator rod.

[0016] Preferably, the indicator rod includes a fixed rod, a sliding block with an indicator line, and a driving unit for driving the sliding block to slide. One end of the fixed rod is threaded to the side wall of the collar, and the other end of the fixed rod is slidably disposed in a limiting groove. A second sliding groove is provided at the end of the fixed rod away from the collar, and the sliding block is slidably disposed in the second sliding groove.

[0017] By adopting the above technical solution, since the indicator line is set on the sliding block, the sliding block is driven to slide in the second sliding groove of the fixed rod by the operation drive unit, thereby flexibly adjusting the position of the indicator rod, further improving the flexibility and accuracy of valve position indication, and also making it easier for staff to observe and operate.

[0018] Preferably, the drive unit includes a fixed block, an adjusting screw, and a connecting spring sleeved on the adjusting screw. The fixed block is connected to the end of the fixed rod away from the collar. One end of the adjusting screw abuts against a sliding block, and the other end is threaded to the fixed block. One end of the connecting spring is connected to the sliding block, and the other end is connected to the fixed block.

[0019] By adopting the above technical solution, the operator drives the sliding block to slide in the second sliding groove by rotating the adjusting screw on the fixed block. The connecting spring is always in a stretched state during the sliding process of the sliding block. When the operator turns the adjusting screw downward, the connecting spring retracts and drives the sliding block to move downward, thereby realizing the fine adjustment of the position of the indicator rod. At the same time, after the adjustment is completed, the indicator rod can be kept in the set position, ensuring the stability of the indicator rod position.

[0020] Preferably, the end of the adjusting screw away from the sliding block is provided with an end cap that is easy for the operator to screw on.

[0021] By adopting the above technical solution and utilizing the end cap, the contact area for operation is increased, the difficulty of adjusting the adjusting screw is reduced, and the operator can more easily adjust the position of the adjusting screw.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. When the operator turns the handwheel, the valve stem rises and falls with the handwheel, and the indicator rod also rises and falls with the handwheel. This eliminates the need for the operator to calculate the valve stem position by turning the handwheel rotation angle. The valve position information can be obtained intuitively through the indicator rod, which greatly improves the accuracy and efficiency of judging the valve position and facilitates precise control of the opening and closing degree of the regulating valve.

[0024] 2. The turning rod is threaded onto the side wall of the collar, and the vertical sliding rod slides in the limiting groove. At the same time, the turning rod and the first sliding groove of the vertical sliding rod form a sliding fit, and the two are locked and limited by locking bolts. This design allows the length of the indicator rod to be adjusted according to the actual situation, so the indicator rod can be adapted to regulating valves with different heights and valve stem strokes, enhancing the versatility and applicability of the indicator rod.

[0025] 3. The operator drives the sliding block to slide in the second sliding groove by rotating the adjusting screw on the fixed block. The connecting spring is always in a stretched state during the sliding process of the sliding block. When the operator turns the adjusting screw downward, the connecting spring retracts and drives the sliding block to move downward, thereby realizing the fine adjustment of the position of the indicator rod. At the same time, after the adjustment is completed, the indicator rod can be kept in the set position, ensuring the stability of the indicator rod position. Attached Figure Description

[0026] Figure 1 This is an isometric schematic diagram of the main overall structure in Embodiment 1 of this application;

[0027] Figure 2 This is a side view of the indicator line on the indicator rod, which is the main feature of Embodiment 1 of this application;

[0028] Figure 3 This is an exploded view of Embodiment 2 of this application, which mainly illustrates the cooperation relationship between the turning rod and the vertical sliding rod.

[0029] Figure 4 This is a cross-sectional view of the internal structure of the turning rod and the vertical sliding rod, which is the main features of Embodiment 2 of this application;

[0030] Figure 5 yes Figure 4 The image shows a magnified section that primarily illustrates the connection between the pivot rod and the vertical sliding rod.

[0031] Figure 6 This is an isometric schematic diagram of the main overall structure in Embodiment 3 of this application;

[0032] Figure 7 This is a structural diagram illustrating the main drive unit structure in Embodiment 3 of this application.

[0033] Reference numerals: 1. Valve body; 11. Limiting block; 12. Limiting groove; 2. Valve stem; 3. Handwheel; 31. Annular gasket; 32. Collar; 4. Indicator rod; 41. Indicator line; 42. Turning rod; 421. Adapter hole; 43. Vertical sliding rod; 431. First sliding groove; 432. Threaded hole; 44. Locking bolt; 45. Fixing rod; 451. Second sliding groove; 46. Sliding block; 47. Drive unit; 471. Fixing block; 472. Adjusting screw; 4721. End cap; 473. Connecting spring. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail.

[0035] This application discloses a lifting mark structure for a regulating valve.

[0036] Example 1:

[0037] Reference Figure 1 A lifting and lowering marking structure for a regulating valve includes a valve body 1, a valve stem 2, and a handwheel 3. The upper end of the valve stem 2 is coaxially fixed with the handwheel 3, and the lower end of the valve stem 2 is threadedly connected to the valve body 1. The handwheel 3 is provided with an indicator rod 4 for the operator to visually observe the valve position. In this embodiment, the indicator rod 4 is arranged in a "7" shape. When in use, the operator rotates the handwheel 3, which simultaneously drives the valve stem 2 and the indicator rod 4 to rise and fall. The operator can visually obtain valve position information by observing the indicator rod 4, which improves the accuracy and efficiency of judging the valve position.

[0038] Reference Figure 1 The lower end of the handwheel 3 is fitted with an annular washer 31 and a collar 32. The annular washer 31 is welded to the handwheel 3, and the collar 32 overlaps the annular washer 31. The lower surface of the collar 32 and the upper surface of the annular washer 31 form an abutting fit. Thus, the annular washer 31 provides support for the collar 32, preventing the collar 32 from falling off during use, and also provides a stable installation base for the indicator rod 4.

[0039] Reference Figure 1 A limiting block 11 is welded to the side wall of the valve body 1, and a limiting groove 12 is formed on the limiting block 11. The indicator rod 4 slides vertically in the limiting groove 12 of the valve body 1. The limiting groove 12 can prevent the indicator rod 4 from rotating or deviating. The end of the indicator rod 4 away from the valve body 1 is welded to the side wall of the collar 32. Thus, when the handwheel 3 drives the annular gasket 31 and the collar 32 to rise and fall, the collar 32 can stably drive the indicator rod 4 to rise and fall stably in the limiting groove 12, ensuring the accuracy and stability of the indicator rod 4.

[0040] Reference Figure 1 and Figure 2 The indicator rod 4 is engraved with indicator lines 41 in a ring. Multiple indicator lines 41 are arranged at intervals, each corresponding to a different opening degree of the valve rod 2. In this embodiment, two indicator lines 41 are arranged at intervals, one indicating that the valve position is in the open state and the other indicating that the valve position is in the closed state.

[0041] The implementation principle of this application embodiment is as follows: when the operator turns the handwheel 3, the valve stem 2 rises and falls, and the collar 32 drives the indicator rod 4 to slide vertically along the limit. The operator can directly read the current valve position status by observing whether the indicator line 41 is aligned with the reference scale line on the valve body 1, without having to estimate the rotation angle of the handwheel 3.

[0042] Example 2:

[0043] The difference between Example 2 and Example 1 is that:

[0044] Reference Figure 3 and Figure 4 The annular gasket 31 is threaded onto the handwheel 3. The indicator rod 4 consists of a turning rod 42, a vertical sliding rod 43, and a locking bolt 44. The turning rod 42 is arranged in a "7" shape. The vertical sliding rod 43 slides in the limiting groove 12 on the limiting block 11. The indicator line 41 is arranged on the vertical sliding rod 43.

[0045] Reference Figure 4 and Figure 5 The vertical sliding rod 43 has a first sliding groove 431 and a threaded hole 432. The first sliding groove 431 is set with the opening facing upward. The turning rod 42 has an adapter hole 421. There are multiple adapter holes 421. In this embodiment, there are eight adapter holes 421. One end of the turning rod 42 is threaded to the side wall of the collar 32, and the other end is inserted into the first sliding groove 431 at the top of the vertical sliding rod 43. The locking bolt 44 passes through the threaded hole 432 and the adapter hole 421 in sequence to lock and fix the turning rod 42 and the vertical sliding rod 43.

[0046] The implementation principle of this application embodiment is as follows: During installation, firstly, the turning rod 42 is threaded onto the side wall of the collar 32, then the collar 32 is fitted onto the handwheel 3, and then the annular washer 31 is threaded onto the handwheel 3, so that the collar 32 overlaps the annular washer 31. Next, the length of the turning rod 42 in the first sliding groove 431 is adjusted. After the adjustment is completed, the positions of the turning rod 42 and the vertical sliding rod 43 are locked and fixed by the locking bolt 44. Finally, the end of the vertical sliding rod 43 away from the turning rod 42 forms a sliding fit with the limiting groove 12, and a suitable indicator line 41 is engraved on the vertical sliding rod 43. Then, the length of the indicator rod 4 can be adjusted according to different heights and valve stem 2 strokes, which enhances the versatility and applicability of the indicator rod 4.

[0047] Example 3:

[0048] The difference between Example 3 and Example 2 is that:

[0049] Reference Figure 6 and Figure 7The indicator rod 4 includes a fixed rod 45, a sliding block 46, and a drive unit 47. One end of the fixed rod 45 is threaded to the side wall of the collar 32, and the other end is slidably disposed in the limiting groove 12. The end of the fixed rod 45 away from the collar 32 has a second sliding groove 451 with the opening facing downward. The sliding block 46 is slidably disposed in the second sliding groove 451, and the indicator line 41 is disposed on the sliding block 46. In this embodiment, the indicator line 41 on the sliding block 46 is a single line.

[0050] Reference Figure 6 and Figure 7 The drive unit 47 includes a fixed block 471, an adjusting screw 472, and a connecting spring 473. The fixed block 471 is welded to the end of the fixed rod 45 away from the collar 32. The adjusting screw 472 is threaded onto the fixed block 471 and forms an abutment fit with the sliding block 46. The connecting spring 473 is sleeved on the adjusting screw 472, and one end of the connecting spring 473 is bonded and fixed to the sliding block 46, while the other end is bonded and fixed to the fixed block 471. The connecting spring 473 is always in a stretched state during the sliding process of the sliding block 46.

[0051] Reference Figure 6 and Figure 7 By operating the adjusting screw 472, the sliding block 46 is driven to slide in the second sliding groove 451 of the fixed rod 45, thereby flexibly adjusting the indicating position of the indicator rod 4 on the sliding block 46, further improving the flexibility and accuracy of valve position indication, and also facilitating observation and operation by the staff.

[0052] Reference Figure 6 and Figure 7 The end of the adjusting screw 472 away from the sliding block 46 is formed with an end cap 4721, which provides convenience for the operator to turn the adjusting screw 472. The end cap 4721 increases the contact area of ​​operation, reduces the difficulty of adjusting the adjusting screw 472, improves the adjustment efficiency, and makes it easier for the operator to adjust the position of the adjusting screw 472.

[0053] The implementation principle of this application embodiment is as follows: During installation, the turning rod 42 is first threaded onto the side wall of the collar 32, then the collar 32 is fitted onto the handwheel 3, and then the annular washer 31 is threaded onto the handwheel 3, so that the collar 32 overlaps the annular washer 31.

[0054] When it is necessary to adjust the indicator line 41 on the sliding block 46 upward, the operator rotates the adjusting screw 472 on the fixed block 471 by turning the end cap 4721 clockwise, thereby pushing the sliding block 46 to slide upward in the second sliding groove 451.

[0055] When it is necessary to adjust the indicator line 41 on the sliding block 46 downward, the operator rotates the adjusting screw 472 on the fixed block 471 by turning the end cap 4721 counterclockwise, so that the adjusting screw 472 moves downward. At this time, the connecting spring 473 retracts and drives the sliding block 46 to move downward, thereby achieving fine adjustment of the position of the indicator rod 4. At the same time, after the adjustment is completed, the indicator rod 4 and the sliding block 46 can be kept in the set position, ensuring the stability of the position of the indicator rod 4.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lifting mark structure for a regulating valve, characterized in that: It includes a valve body (1), a valve stem (2) for raising and lowering on the valve body (1), and a handwheel (3) for driving the valve stem (2) to raise and lower. The valve stem (2) and the handwheel (3) are fixed coaxially. The handwheel (3) is provided with an indicator rod (4) to facilitate the operator to observe the valve position. The end of the indicator rod (4) away from the handwheel (3) slides vertically on the valve body (1).

2. The lifting mark structure for a regulating valve according to claim 1, characterized in that: The handwheel (3) is coaxially provided with an annular gasket (31) and a collar (32) mounted on the annular gasket (31). The annular gasket (31) is fixedly mounted on the handwheel (3). The upper surface of the annular gasket (31) and the lower surface of the collar (32) form an abutment fit. One end of the indicator rod (4) is connected to the side wall of the collar (32), and the other end is vertically slidably mounted on the valve body (1).

3. The lifting mark structure for a regulating valve according to claim 2, characterized in that: A limiting block (11) is provided on the side wall of the valve body (1), and a limiting groove (12) is provided on the limiting block (11). The end of the indicator rod (4) away from the collar (32) forms a sliding fit with the limiting groove (12).

4. The lifting mark structure for a regulating valve according to claim 1, characterized in that: The indicator rod (4) is provided with indicator lines (41), and multiple indicator lines (41) are provided at intervals.

5. The lifting mark structure for a regulating valve according to claim 3, characterized in that: The indicator rod (4) includes a turning rod (42), a vertical sliding rod (43), and a locking bolt (44). One end of the vertical sliding rod (43) is provided with a first sliding groove (431), and the other end is slidably engaged with the limiting groove (12). One end of the turning rod (42) is threadedly connected to the side wall of the collar (32), and the other end is slidably engaged with the first sliding groove (431). The turning rod (42) and the vertical sliding rod (43) are locked and limited by the locking bolt (44).

6. The lifting mark structure for a regulating valve according to claim 3, characterized in that: The indicator rod (4) includes a fixed rod (45), a sliding block (46) with an indicator line (41) and a driving unit (47) for driving the sliding block (46) to slide. One end of the fixed rod (45) is threaded to the side wall of the collar (32), and the other end of the fixed rod (45) is slidably disposed in the limiting groove (12). A second sliding groove (451) is opened at the end of the fixed rod (45) away from the collar (32), and the sliding block (46) is slidably disposed in the second sliding groove (451).

7. The lifting mark structure for a regulating valve according to claim 6, characterized in that: The drive unit (47) includes a fixed block (471), an adjusting screw (472), and a connecting spring (473) sleeved on the adjusting screw (472). The fixed block (471) is connected to the end of the fixed rod (45) away from the collar (32). One end of the adjusting screw (472) abuts against the sliding block (46), and the other end is threaded to the fixed block (471). One end of the connecting spring (473) is connected to the sliding block (46), and the other end is connected to the fixed block (471).

8. The lifting mark structure for a regulating valve according to claim 7, characterized in that: The end of the adjusting screw (472) away from the sliding block (46) is provided with an end cap (4721) that is easy for the operator to screw on.

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