Pull-type manual valve with lock structure

Abstract

The utility model provides a kind of lifting type manual valve with lock structure, including handle, lock hole spare, positioning rod. Handle bottom is provided with positioning groove, and handle rotation is limited by positioning rod and positioning groove cooperation, and handle is rotated after being pulled up to positioning groove and being separated from positioning rod. Handle top is provided with lock hole spare to limit the stroke of handle pulling, and reset mechanism is provided between handle and lock hole spare to reset handle. When handle is rotated to valve is located full open or full close position, lock hole spare can be directly locked. The utility model is convenient to operate, can be bidirectional locking in valve full open position and full close position;Lock hole spare is located in the center of handle, does not occupy space additionally, avoids interfering adjacent pipeline.

Description

Technical Field

[0001] This utility model relates to the field of valve handle locking technology, specifically to a pull-type manual valve with a locking handle structure that can be locked bidirectionally in narrow spaces without interfering with adjacent pipelines. Background Technology

[0002] Currently available manual locking valves have two major drawbacks: first, their locking function is limited to one-way locking in either the open or closed position, failing to meet the requirements of bidirectional locking (such as preventing accidental activation during equipment transportation); second, the locking structure occupies a large space, making it difficult to deploy in confined spaces and potentially interfering with adjacent system pipelines. Therefore, a manual valve capable of bidirectional locking that can lock in confined spaces without interfering with adjacent pipelines is needed. Utility Model Content

[0003] The purpose of this utility model is to provide a pull-type manual valve with a locking structure, which solves the technical problems pointed out in the background art, such as the single locking function of existing manual valves, the difficulty in locking in narrow spaces, and the interference with adjacent pipelines.

[0004] To achieve the above objectives, this utility model provides a pull-type manual valve with a locking structure, including a handle, a locking hole, and a positioning rod. The locking hole is located at the top of the handle, and the positioning rod is located at the bottom of the handle. The lower end of the handle is provided with an open position positioning groove and a closed position positioning groove. The handle can be axially pulled and rotated relative to the locking hole. When the handle is rotated to the fully open position, the open position positioning groove engages with the positioning rod. When the handle is rotated to the fully closed position, the closed position positioning groove engages with the positioning rod. During the engagement of the positioning rod with the open or closed position positioning groove, the handle cannot be rotated.

[0005] Furthermore, the lower end of the locking hole is provided with a step that limits the lifting stroke of the handle.

[0006] Furthermore, a handle reset mechanism is provided between the handle and the locking hole.

[0007] Furthermore, it also includes a rotating sleeve, the upper end of which is connected to a handle, the top of which is fixed with a locking hole, and the lower end of which is connected to a valve stem.

[0008] Furthermore, the rotating sleeve is limited by a valve cap nut, which is connected to the valve body.

[0009] Furthermore, a display block is provided on the handle, the display block is fixed on the valve cap nut, and the positioning rod is provided on the display block.

[0010] Compared with the prior art, the beneficial effect of this utility model is that a positioning groove is set at the bottom of the handle, and the rotation of the handle is restricted by the cooperation of the positioning rod and the positioning groove. After the handle is pulled upward until the positioning groove is disengaged from the positioning rod, the handle can be rotated. A locking hole is set at the top of the handle to limit the lifting stroke of the handle, and a reset mechanism is provided between the handle and the locking hole to allow the handle to reset. When the handle is rotated to the valve in the fully open or fully closed position, the locking hole can be locked directly to achieve bidirectional locking; the locking hole is located in the center of the handle, does not occupy additional space, and avoids interference with adjacent pipelines. Attached Figure Description

[0011] Figure 1 A schematic diagram of the overall structure of the diaphragm valve incorporating the concept of this utility model;

[0012] Figure 2 for Figure 1 A schematic diagram of the middle handle;

[0013] In the diagram, 1. Valve body; 2. Valve seat assembly; 3. Valve cap nut; 4. Valve stem; 5. Rotary sleeve; 6. Set screw; 7. Display block; 8. Handle; 9. Spring; 10. Locking hole; 11. Socket head screw; 12. Positioning rod; 13. Open position positioning groove; 14. Closed position positioning groove; 15. Step. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0017] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The following describes some embodiments of the present invention in detail with reference to the accompanying drawings.

[0020] like Figure 1-2 As shown, the present invention discloses a pull-type manual valve with a locking structure, comprising a handle 8, a locking hole 10, and a positioning rod 12. The locking hole 10 is located at the center of the top of the handle 8, and has a locking hole for suspending a lock. The positioning rod 12 is located at the bottom of the handle 8, perpendicular to the circumference of the handle 8. The lower end of the handle 8 has an open position positioning groove 13 and a closed position positioning groove 14, which are used to cooperate with the positioning rod 12 for positioning and restricting the rotation of the handle 8. The handle 8 can be pulled outward axially relative to the locking hole 10 until the open position positioning groove 13 or the closed position positioning groove 14 disengages from the positioning rod 12. After the open position positioning groove 13 or the closed position positioning groove 14 disengages from the positioning rod 12, the handle 8 can be rotated to the fully open or fully closed position of the valve.

[0021] Handle 8 transmits torque via rotating sleeve 5, controlling the valve to open or close. See appendix for details. Figure 1 The lower end of the rotating sleeve 5 is connected to a valve stem 4, and the upper end is connected to a handle 8. A valve seat assembly 2 is connected to the valve stem 4. When the handle 8 is rotated, it drives the valve stem 12 to move up and down, and the valve stem 12 drives the valve seat assembly 2 to move, thereby controlling the valve to open or close. The rotating sleeve 5 is limited by a valve cap nut 3. The rotating sleeve 5 is provided with a protrusion, and the valve cap nut 3 has a shoulder that abuts against the protrusion. The valve cap nut 3 is threaded onto the valve body 1, thus limiting the rotating sleeve 5.

[0022] To facilitate identification of the valve's position during the rotation of the handle 8, a display block 7 is also provided on the handle 8. The display block 7 is fixed to the upper end of the valve cap nut 3 by a set screw 6, and the positioning rod 12 is vertically fixed to the display block 7. A mark is provided on the top of the display block 7, and a viewing window is provided on the top of the handle 8. When the handle 8 is rotated to the corresponding position of the valve, the mark on the display block 7 can be directly seen through the viewing window.

[0023] Preferably, the locking hole 10 is fixed to the top of the rotating sleeve 5 by connecting screws 11. The lower end of the locking hole 10 is provided with a step 15. When the handle 8 is pulled outward, the step 15 can limit the pulling stroke of the handle 8 and prevent the handle 8 from being pulled too far, which could damage the internal structure of the valve. A handle reset mechanism 9 is also provided between the locking hole 10 and the handle 8. The handle reset mechanism 9 includes, but is not limited to, springs, push rods, connecting rods, cylinders, etc. The handle reset mechanism 9 can provide reset power after the handle 8 is pulled up, so that the handle 8 automatically returns to its original position.

[0024] The principle of this invention is as follows: Pull the handle 8 outward until the inner end face of the handle 8 abuts against the step 15 of the locking hole 10, or until the positioning groove at the lower end of the handle 8 disengages from the positioning rod 12. Rotate the handle 8 and observe the markings on the display block 7 through the handle's viewing window. When the handle 8 rotates the valve to the fully open or fully closed position, stop rotating. Then release the handle 8 to reset it. The positioning groove at the lower end of the handle 8 engages with the positioning rod 12. Finally, lock the locking hole 10 with a lock. The handle 8 is restricted from pulling up by the locking hole 10, and can only be pulled up until the bottom opening positioning groove 13 or closing positioning groove 14 of the handle 8 is disengaged from the positioning rod 12. When a lock is suspended at the locking hole of the locking hole 10, the handle 8 cannot be pulled up. The handle 8 is positioned by the positioning groove at the lower end and the positioning rod 12, and cannot be rotated, thus realizing the function of locking the manual valve in both the fully open and fully closed positions. In addition, the locking hole 10 is located at the top center of the handle 8, does not take up extra space, and will not interfere with adjacent pipelines after locking.

[0025] The circumferential distance between the open position positioning groove 13 and the closed position positioning groove 14 depends on the number of rotations of the handle 8 when the valve is in the open or closed position. For example, for valves with a small Cv value, the handle 8 only needs to be rotated 1 / 4 turn to be fully open or fully closed. At this time, the circumferential distance between the open position positioning groove 13 and the closed position positioning groove 14 is 1 / 4 of the circumference. For valves with a slightly larger Cv value, the valve stem 4 has a longer lifting stroke, and the handle 8 rotates more times. Therefore, the circumferential distance between the open position positioning groove 13 and the closed position positioning groove 14 is also greater.

[0026] The basic principles and advantages of this utility model have been described above. For those skilled in the art, the above embodiments are merely illustrative of the technical solutions of this utility model and not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some or all of the technical features by reading this specification. Any obvious substitutions are within the protection scope of this utility model without departing from its concept.

Claims

1. A pull-type manual valve with a locking structure, characterized in that, The device includes a handle (8), a locking hole (10), and a positioning rod (12). The locking hole (10) is located at the top of the handle (8), and the positioning rod (12) is located at the bottom of the handle (8). The lower end of the handle (8) is provided with an open positioning groove (13) and a closed positioning groove (14). The handle (8) can be axially pulled and rotated relative to the locking hole (10). When the handle (8) is rotated to the fully open position, the open positioning groove (13) cooperates with the positioning rod (12). When the handle (8) is rotated to the fully closed position, the closed positioning groove (14) cooperates with the positioning rod (12). During the period when the positioning rod (12) is cooperated with the open positioning groove (13) or the closed positioning groove (14), the handle (8) cannot be rotated.

2. The pull-type manual valve with locking structure according to claim 1, characterized in that, It also includes a rotating sleeve (5), the upper end of which is connected to a handle (8), the top of which is fixed with a locking hole (10), and the lower end is connected to a valve stem (4).

3. The pull-type manual valve with locking structure according to claim 2, characterized in that, The rotating sleeve (5) is limited by the valve cap nut (3), which is connected to the valve body (1).

4. The pull-type manual valve with locking structure according to claim 3, characterized in that, The handle (8) is provided with a display block (7), which is fixed on the valve cap nut (3), and the positioning rod (12) is provided on the display block (7).

5. The pull-type manual valve with locking structure according to claim 4, characterized in that, The lower end of the locking hole (10) is provided with a step (15) that limits the lifting stroke of the handle (8).

6. The pull-type manual valve with locking structure according to claim 5, characterized in that, A handle reset mechanism (9) is provided between the handle (8) and the locking hole (10).

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