High-stability corrugated pipe gate valve

Abstract

This utility model discloses a high-stability bellows gate valve, including a valve body with a built-in valve core. A bushing is fixed to the top of the valve body, and a handwheel is installed on the upper end of the bushing. The advantages are as follows: This utility model designs a limiting mechanism consisting of a limiting groove, a limiting block, a telescopic rod, a connecting rod, and a return spring. During valve use, the telescopic rod can drive the limiting ring upwards to separate it from the limiting block. Then, rotating the handwheel adjusts the valve opening. After adjustment, the limiting ring returns to its original position under the action of the return spring. At this time, the limiting block and the limiting groove combine to fix the limiting ring. Furthermore, since the limiting groove is circumferentially distributed on the bottom wall of the limiting ring, the limiting ring can be fixed by the limiting block at any position, thus achieving the limiting and fixing of the handwheel at any position, preventing accidental contact that could affect the normal operation of the pipeline, and improving the overall stability of the valve body.

Description

Technical Field

[0001] This utility model relates to the field of bellows gate valve technology, specifically to a high-stability bellows gate valve. Background Technology

[0002] Bellows gate valves are devices used for fully open and fully closed applications. The opening and closing element is a plug-shaped valve disc with a flat or conical sealing surface. The valve disc moves linearly along the centerline of the fluid. The valve stem movement can be either a rising stem type (the valve stem rises and falls, but the handwheel does not) or a rising and rotating stem type (the handwheel and valve stem rotate and rise together, with the nut located on the valve body). Bellows gate valves are only suitable for fully open and fully closed applications and are not permitted for regulation or throttling. These valves should generally be installed horizontally in pipelines.

[0003] Patent CN222334645U discloses a bellows gate valve, including a valve body; a connector disposed on the top of the valve body; an adjusting rod disposed on the connector; an adjusting wheel disposed on the top of the adjusting rod; and a limiting mechanism disposed at the bottom of the adjusting wheel. The limiting mechanism includes a limiting groove, a connecting plate, and a limiting rod. The limiting groove is formed at the bottom of the adjusting wheel, the connecting plate is fixedly connected to the outer wall of the connector, and the top of the limiting rod is inserted into the limiting groove.

[0004] While the aforementioned patent reduces the risk of accidental contact with the bellows gate valve affecting normal pipeline operation and thus improves the overall stability of the equipment, in actual operation, the position of the limiting groove, which is located on the adjusting wheel and rotates with it, is constantly changing, while the position of the limiting rod in the limiting mechanism is fixed. Consequently, when the positions of the limiting groove and the limiting rod do not correspond, the adjusting wheel cannot be limited, making it easy for the handwheel to be accidentally touched, thus affecting the normal operation of the pipeline. This results in low stability and poor performance. Therefore, a highly stable bellows gate valve is urgently needed to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this application provides a highly stable bellows gate valve, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] This utility model is achieved through the following technical solution: This utility model proposes a high-stability bellows gate valve, including a valve body, a valve core built into the valve body, a bushing fixed to the top of the valve body, a handwheel installed at the upper end of the bushing, a valve stem installed inside the handwheel, an adjustment cavity opened on the outer wall of the bushing, a limit assembly installed in the adjustment cavity, the limit assembly including a limit ring disposed in the adjustment cavity, a limit groove with a toothed structure opened at the bottom end of the limit ring, a limit block matching the specification of the limit groove fixed in the adjustment cavity, a connecting rod fixed on one side wall of the limit ring, a telescopic rod installed between the connecting rod and the handwheel, a return spring built into the telescopic rod, a positioning button installed on the movable part of the telescopic rod, and two sets of positioning holes opened on the fixed part of the telescopic rod.

[0009] By adopting the above technical solution, when it is necessary to adjust the opening degree of the valve body, the limiting ring is first moved upward by the telescopic rod, so that the limiting block separates from the limiting groove and releases the fixing of the limiting ring. At the same time, the limiting ring is fixed after it moves upward under the action of the positioning button and the positioning hole. Then, the handwheel is rotated, so that the screw drives the valve core to rise and fall under the action of the thread, thereby adjusting the opening degree of the valve body. After adjustment, the limiting ring is reset under the action of the return spring. At this time, since the limiting groove is circumferentially opened at the bottom of the limiting ring, the limiting block can be inserted and matched with the corresponding limiting groove to fix the limiting ring, thereby fixing the handwheel.

[0010] Furthermore, the handwheel is rotatably connected to the bushing, the valve stem is threadedly connected to the handwheel, and the bottom end of the valve stem is fixedly connected to the valve core built into the valve body.

[0011] By adopting the above technical solution, rotating the handwheel causes it to drive the valve core to rise and fall via the valve stem, thereby adjusting the opening degree of the valve body.

[0012] Furthermore, the adjusting cavity is formed on the outer wall of the bushing, the limiting ring is slidably sleeved in the adjusting cavity, and the limiting groove is formed on the bottom wall of the limiting ring.

[0013] By adopting the above technical solution, the adjustment cavity provides lifting and rotating space for the limiting ring.

[0014] Furthermore, the limiting block is welded inside the adjusting cavity, and the limiting block is inserted into the limiting groove.

[0015] By adopting the above technical solution, the limiting block and the limiting groove can be combined to fix the limiting ring. Since the limiting groove is circumferentially distributed on the bottom wall of the limiting ring, the limiting ring can be limited and fixed by the limiting block at any position, thereby realizing the limiting and fixing of the handwheel at any position, avoiding accidental contact that could affect the normal operation of the pipeline, and improving the overall stability of the valve body.

[0016] Furthermore, the connecting rod is welded to one side wall of the limiting ring, the fixed part of the telescopic rod is connected to the handwheel by screws, and the movable part of the telescopic rod is connected to the connecting rod by screws.

[0017] By adopting the above technical solution, the telescopic rod can drive the limiting ring to rise and fall through the connecting rod, thereby realizing the fixing and release of the limiting ring.

[0018] Furthermore, the reset spring is fixed between the fixed part and the movable part of the telescopic rod, and connecting flanges are reserved at both ends of the valve body.

[0019] By adopting the above technical solution, the reset spring can automatically reset the limit ring after the handwheel is adjusted.

[0020] Furthermore, the positioning hole is formed on the fixed part of the telescopic rod, the positioning button is connected to the movable part of the telescopic rod by a spring, and the positioning button is inserted into the positioning hole.

[0021] By adopting the above technical solution, the positioning hole combined with the positioning button can fix the adjusted length of the telescopic rod, thereby fixing the position of the limiting ring.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, this utility model has the following advantages:

[0024] This invention employs a limiting mechanism consisting of a limiting groove, a limiting block, a telescopic rod, a connecting rod, and a return spring. During valve operation, the telescopic rod moves the limiting ring upwards, separating it from the limiting block. Then, the handwheel is rotated to adjust the valve opening. After adjustment, the limiting ring returns to its original position under the action of the return spring. At this point, the limiting block and the limiting groove combine to fix the limiting ring. Furthermore, because the limiting groove is circumferentially distributed on the bottom wall of the limiting ring, the limiting ring can be fixed at any position by the limiting block. This also allows the handwheel to be fixed at any position, preventing accidental contact that could affect the normal operation of the pipeline and improving the overall stability of the valve body. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the structure of a high-stability bellows gate valve according to the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the high-stability bellows gate valve after the limiting groove and the limiting block are separated;

[0027] Figure 3 This utility model describes a high-stability bellows gate valve. Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the internal structure of the telescopic rod in a high-stability bellows gate valve according to the present invention;

[0029] Figure 5 This is a schematic diagram of the limiting ring in a high-stability bellows gate valve according to the present invention.

[0030] The annotations in the attached figures are explained as follows:

[0031] 1. Valve body; 2. Bushing; 3. Handwheel; 4. Valve stem; 5. Adjustment chamber; 6. Limiting assembly; 601. Limiting ring; 602. Limiting groove; 603. Telescopic rod; 604. Connecting rod; 605. Limiting block; 606. Positioning button; 607. Positioning hole; 608. Return spring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] like Figures 1-5As shown, a high-stability bellows gate valve in this embodiment includes a valve body 1 with a built-in valve core. A bushing 2 is fixed to the top of the valve body 1, and a handwheel 3 is installed on the upper end of the bushing 2. Rotating the handwheel 3 allows the valve stem 4 to move up and down under the action of the thread. The valve stem 4 is installed inside the handwheel 3, which can drive the valve core to move up and down to open and close the valve body 1. An adjustment cavity 5 is provided on the outer wall of the bushing 2 to provide rotation and lifting space for the limit ring 601. A limit component 6 is installed in the adjustment cavity 5. The limit component 6 includes a limit ring 601 disposed in the adjustment cavity 5. The bottom end of the limit ring 601 has a toothed limit groove 602. The 5 is fixed with a limiting block 605 that matches the specifications of the limiting groove 602. It is combined with the limiting groove 602 to fix the handwheel 3 by fixing the limiting ring 601. A connecting rod 604 is fixed on one side wall of the limiting ring 601. A telescopic rod 603 is installed between the connecting rod 604 and the handwheel 3, which can drive the limiting ring 601 to rise and fall. The telescopic rod 603 has a built-in return spring 608, which can automatically reset the limiting ring 601. A positioning button 606 is installed on the moving part of the telescopic rod 603. Two sets of positioning holes 607 are opened on the fixed part of the telescopic rod 603, which can fix the length of the telescopic rod 603 after adjustment.

[0034] like Figure 1 and Figure 2 As shown, in this embodiment, the handwheel 3 is rotatably connected to the bushing 2, the valve stem 4 is threadedly connected to the handwheel 3, the bottom end of the valve stem 4 is fixedly connected to the valve core inside the valve body 1, the adjusting cavity 5 is formed on the outer wall of the bushing 2, the limiting ring 601 is slidably sleeved in the adjusting cavity 5, and the limiting groove 602 is formed on the bottom wall of the limiting ring 601. During use, rotating the handwheel 3 causes the valve stem 4 to drive the valve core to rise and fall under the action of the thread, thereby adjusting the opening degree of the valve body 1.

[0035] like Figures 1-4As shown, in this embodiment, the limiting block 605 is welded inside the adjusting cavity 5, and the limiting block 605 is inserted into the limiting groove 602. The connecting rod 604 is welded to one side wall of the limiting ring 601. The fixed part of the telescopic rod 603 is connected to the handwheel 3 by screws, and the movable part of the telescopic rod 603 is connected to the connecting rod 604 by screws. The reset spring 608 is fixed between the fixed part and the movable part of the telescopic rod 603. Connecting flanges are reserved at both ends of the valve body 1. The positioning hole 607 is formed on the fixed part of the telescopic rod 603. The positioning button 606 is connected to the movable part of the telescopic rod 603 by springs, and the positioning button 606 is inserted into the positioning hole 607. Before rotating the handwheel 3, the telescopic rod 603 is compressed by the connecting rod 604, thereby separating the limiting ring 601 from the limiting block 605, thus limiting the movement of the limiting ring 601. After the fixed ring 601 is released, the adjusted position of the limit ring 601 is fixed through the positioning hole 607 and the positioning button 606. Then, the opening of the valve body 1 is adjusted by rotating the handwheel 3. After adjustment, the positioning button 606 is pressed to release the fixed position of the telescopic rod 603. The limit ring 601 is automatically reset under the action of the return spring 608. At this time, the limit block 605 and the limit groove 602 can fix the limit ring 601. Since the limit groove 602 is circumferentially distributed on the bottom wall of the limit ring 601, the limit ring 601 can be fixed by the limit block 605 at any position. This allows the handwheel 3 to be fixed at any position, preventing accidental contact that could affect the normal operation of the pipeline and improving the overall stability of the valve body 1.

[0036] The specific implementation process of this embodiment is as follows: First, the valve body 1 is installed. When adjusting the opening of the valve body 1, the telescopic rod 603 is compressed by the connecting rod 604, thereby separating the limiting ring 601 from the limiting block 605, releasing the fixation of the limiting ring 601. Then, the position of the adjusted limiting ring 601 is fixed through the positioning hole 607 and the positioning button 606. Next, the handwheel 3 is rotated so that the valve stem 4 drives the valve core to rise and fall under the action of the thread, thereby adjusting the opening of the valve body 1. After adjustment, the positioning button is... When pressure is applied at 606, the telescopic rod 603 is released from its fixed position. Under the action of the return spring 608, the limiting ring 601 automatically resets. At this time, the limiting block 605 and the limiting groove 602 combine to fix the limiting ring 601. Since the limiting groove 602 is circumferentially distributed on the bottom wall of the limiting ring 601, the limiting ring 601 can be limited and fixed by the limiting block 605 at any position. This allows the handwheel 3 to be limited and fixed at any position, preventing accidental contact that could affect the normal operation of the pipeline and improving the overall stability of the valve body 1.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-stability bellows gate valve, characterized in that: The device includes a valve body (1) with a built-in valve core. A bushing (2) is fixed to the top of the valve body (1). A handwheel (3) is installed on the upper end of the bushing (2). A valve stem (4) is installed inside the handwheel (3). An adjustment cavity (5) is provided on the outer wall of the bushing (2). A limit assembly (6) is installed in the adjustment cavity (5). The limit assembly (6) includes a limit ring (601) disposed in the adjustment cavity (5). A toothed limit groove (602) is provided at the bottom end of the limit ring (601). The adjusting cavity (5) is fixed with a limiting block (605) that matches the specification of the limiting groove (602). A connecting rod (604) is fixed on one side wall of the limiting ring (601). A telescopic rod (603) is installed between the connecting rod (604) and the handwheel (3). The telescopic rod (603) has a built-in return spring (608). A positioning button (606) is installed on the moving part of the telescopic rod (603). Two sets of positioning holes (607) are opened on the fixed part of the telescopic rod (603).

2. The high-stability bellows gate valve according to claim 1, characterized in that: The handwheel (3) is rotatably connected to the bushing (2), the valve stem (4) is threadedly connected to the handwheel (3), and the bottom end of the valve stem (4) is fixedly connected to the valve core built into the valve body (1).

3. A high-stability bellows gate valve according to claim 2, characterized in that: The adjustment cavity (5) is formed on the outer wall of the bushing (2), the limiting ring (601) is slidably sleeved in the adjustment cavity (5), and the limiting groove (602) is formed on the bottom wall of the limiting ring (601).

4. A high-stability bellows gate valve according to claim 3, characterized in that: The limiting block (605) is welded inside the adjusting cavity (5), and the limiting block (605) is inserted into the limiting groove (602).

5. A high-stability bellows gate valve according to claim 4, characterized in that: The connecting rod (604) is welded to one side wall of the limiting ring (601), the fixed part of the telescopic rod (603) is connected to the handwheel (3) by screws, and the movable part of the telescopic rod (603) is connected to the connecting rod (604) by screws.

6. A high-stability bellows gate valve according to claim 1, characterized in that: The reset spring (608) is fixed between the fixed part and the movable part of the telescopic rod (603), and the valve body (1) has connecting flanges reserved at both ends.

7. A high-stability bellows gate valve according to claim 1, characterized in that: The positioning hole (607) is formed on the fixed part of the telescopic rod (603), the positioning button (606) is connected to the movable part of the telescopic rod (603) by a spring, and the positioning button (606) is inserted into the positioning hole (607).

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