Valve rod of regulating valve

Abstract

The utility model discloses a valve rod of a regulating valve, which relates to the technical field of regulating valve equipment and comprises a clamping seat, the inner wall of the clamping seat is provided with a valve rod, the top of the clamping seat is provided with a fixing table, the inner wall of the fixing table is provided with a sliding groove, the outer wall of the valve rod is provided with a measuring rod, and the side wall of the measuring rod is provided with a ruler. A soft rubber protective sleeve is installed on the inner wall of the clamping base, and a fixing rod penetrates through the interior of the soft rubber protective sleeve. The sliding groove and the measuring rod are arranged and are movably connected, when the device is used, the opening degree of fluid is controlled by rotating the valve rod, the flow of the fluid cannot be accurately determined due to the fact that the plug is arranged in the device, the outer wall of the measuring rod is provided with the ruler, and when the valve rod is rotated, the flow of the fluid can be accurately determined by observing the moving position of the ruler. The specific size of the opening degree of the valve can be observed, so that the flow of fluid is controllable, the passing requirements of different flows are met, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valve equipment, in particular to a regulating valve stem. Background Art

[0002] A regulating valve is a valve used to adjust the opening of a fluid. There are manual regulating valves that adjust the valve opening by axial movement of the valve stem, and there are also manual regulating valves that adjust the valve opening by rotating the valve stem. However, the valve stem of the existing rotary regulating valve opening is partially exposed to the air and is prone to rust, making the valve inconvenient to use. In addition, due to manual rotation during adjustment, the flow cannot be accurately controlled. Therefore, a regulating valve stem is needed.

[0003] The existing patent document with the technical disclosure number CN202021649283.X provides a regulating valve stem structure, which consists of a valve stem and a guide cone valve head. The guide cone valve head is fixedly connected to the valve stem head by a locating pin. The interior of the valve stem head and the guide cone valve head are both hollow structures. The valve stem head and the guide cone valve head are provided with a balancing hole. The valve stem is provided with multiple grooves to reduce the amount of valve stem leakage. The guide cone valve head profile is a smooth profile composed of three arc segments. The three arc segments are connected. The connection is a transition line with a continuous second-order derivative. The regulating valve stem of the utility model has a simple structure and does not require additional space after adoption. It can effectively improve the flow conditions at the throat position of the regulating valve, reduce flow losses, vibration and noise, and improve the overall efficiency of the turbine. It can also be expanded to the same type of high-power marine steam turbine units. However, the CN202021649283.X technology cannot be protected or quantitatively adjusted during operation. Therefore, a regulating valve stem is urgently needed. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a regulating valve stem to solve the problem that the existing regulating valve stem cannot be protected and cannot quantitatively adjust the valve opening when in use.

[0005] To achieve the above object, the present invention provides the following technical solution: a regulating valve stem, comprising a holder, an inner wall of the holder being provided with a valve stem, and a top of the holder being provided with a fixing platform;

[0006] A sliding groove is provided on the inner wall of the fixing platform, a measuring rod is installed on the outer wall of the valve stem, and a scale is installed on the side wall of the measuring rod;

[0007] A soft rubber protective cover is installed on the inner wall of the card seat, a fixing rod passes through the interior of the soft rubber protective cover, and a plug is installed on the bottom of the valve stem.

[0008] Preferably, the holder and the valve stem are movably connected, and the fixing platform and the holder are welded.

[0009] Preferably, the inner wall size of the chute matches the outer wall diameter size of the measuring rod, and the chute and the measuring rod are slidably connected.

[0010] Preferably, the soft rubber protective cover is configured in a corrugated shape, and the soft rubber protective cover is threadably fixed to the base via a fixing rod.

[0011] Preferably, the fixing rods are distributed in a circular array with the central axis of the soft rubber protective cover as the center, and the bottom of the soft rubber protective cover is movably connected to the base.

[0012] Preferably, the valve stem and the plug are threadedly connected.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model provides a chute and a measuring rod, which are movably connected. When the device is used, the fluid opening is controlled by rotating the valve stem. Since the plug is inside the device, the fluid flow cannot be accurately determined. However, a scale is provided on the outer wall of the measuring rod. When the valve stem is rotated, the specific size of the valve opening can be observed by observing the moving position of the scale, thereby making the fluid flow controllable, meeting the requirements of different flow rates, and increasing the practicality of the device.

[0015] 2. The utility model is provided with a soft rubber protective cover, which is fixed to the upper end of the holder through a fixing rod. When the device is in use, the setting of the soft rubber protective cover can protect the outer wall of the valve stem exposed to the air, avoiding rust caused by rain erosion, thereby affecting the use of the device and increasing the usability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from the front;

[0017] Figure 2 This is a structural diagram showing the disassembly of the internal components of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the protection component of the utility model.

[0020] In the figure: 1. Clamping seat; 2. Valve stem; 3. Fixing platform; 4. Slide; 5. Measuring rod; 6. Ruler; 7. Soft rubber protective cover; 8. Fixing rod; 9. Plug. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] The following describes an embodiment of the present invention based on its overall structure.

[0023] See also Figure 1-4 A regulating valve stem includes a base 1, a valve stem 2 is installed on the inner wall of the base 1, a fixing platform 3 is installed on the top of the base 1, the base 1 and the valve stem 2 are movably connected, and the fixing platform 3 and the base 1 are welded.

[0024] See also Figure 1-4 , a regulating valve stem, a slide groove 4 is provided on the inner wall of the fixed platform 3, a measuring rod 5 is installed on the outer wall of the valve stem 2, and a scale 6 is installed on the side wall of the measuring rod 5. The inner wall size of the slide groove 4 matches the outer wall diameter size of the measuring rod 5, the slide groove 4 and the measuring rod 5 are slidingly connected. Through the set slide groove 4 and the measuring rod 5, the slide groove 4 and the measuring rod 5 are movably connected. When using the device, the fluid opening is controlled by rotating the valve stem 2. Since the plug 9 is inside the device, the flow rate of the fluid cannot be accurately determined, and the outer wall of the measuring rod 5 is provided with a scale 6. When the valve stem 2 is rotated, the specific size of the valve opening can be observed by observing the moving position of the scale 6, thereby making the fluid flow controllable, meeting the passage requirements of different flow rates, and increasing the practicality of the device.

[0025] See also Figure 1-4 , a regulating valve stem, the inner wall of the cartridge 1 is installed with a soft rubber protective sleeve 7, the fixing rod 8 passes through the interior of the soft rubber protective sleeve 7, and a plug 9 is installed at the bottom of the valve stem 2. The soft rubber protective sleeve 7 is corrugated and is fixed to the cartridge 1 through the fixing rod 8. The fixing rod 8 is distributed in a ring array with the central axis of the soft rubber protective sleeve 7 as the center. The bottom of the soft rubber protective sleeve 7 is movably connected to the cartridge 1, and the valve stem 2 and the plug 9 are threadedly connected. Through the set soft rubber protective sleeve 7, the soft rubber protective sleeve 7 is fixed to the upper end of the cartridge 1 through the fixing rod 8. When the device is in use, the setting of the soft rubber protective sleeve 7 can protect the outer wall of the valve stem 2 exposed to the air to avoid rust caused by rain erosion, thereby affecting the use of the device and increasing the usability of the device.

[0026] Working principle: When in use, first move the device to the desired position, then insert the valve stem 2 into the holder 1, and then screw the valve stem 2 and the plug 9 together, and then control the fluid opening by rotating the valve stem 2. Since the plug 9 is inside the device, the flow rate of the fluid cannot be accurately determined, and the outer wall of the measuring rod 5 is provided with a scale 6. When rotating the valve stem 2, by observing the moving position of the scale 6, the specific size of the valve opening can be observed, so that the flow rate of the fluid can be controlled, meeting the passing requirements of different flow rates, and increasing the practicality of the device. Finally, the soft rubber protective cover 7 is screwed to the upper end of the holder 1 through the fixing rod 8. When using the device, the setting of the soft rubber protective cover 7 can protect the outer wall of the valve stem 2 exposed to the air to avoid rust caused by rain erosion, thereby affecting the use of the device and increasing the usability of the device. In this way, the use process of the device is completed. The content not described in detail in this manual belongs to the existing technology known to professional and technical personnel in this field.

[0027] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the protection content of the present invention.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A regulating valve stem, comprising a holder (1), characterized in that: A valve stem (2) is installed on the inner wall of the holder (1), and a fixing platform (3) is installed on the top of the holder (1); The inner wall of the fixed platform (3) is provided with a slide groove (4), the outer wall of the valve stem (2) is provided with a measuring rod (5), and the side wall of the measuring rod (5) is provided with a scale (6); A soft rubber protective sleeve (7) is installed on the inner wall of the holder (1), a fixing rod (8) passes through the inside of the soft rubber protective sleeve (7), and a plug (9) is installed on the bottom of the valve stem (2).

2. The regulating valve stem according to claim 1, characterized in that: The clamping seat (1) and the valve stem (2) are movably connected, and the fixing platform (3) and the clamping seat (1) are welded.

3. The regulating valve stem according to claim 1, characterized in that: The inner wall size of the slide groove (4) matches the outer wall diameter size of the measuring rod (5), and the slide groove (4) and the measuring rod (5) are slidably connected.

4. The regulating valve stem according to claim 1, characterized in that: The soft rubber protective sleeve (7) is arranged in a corrugated shape, and the soft rubber protective sleeve (7) is threadedly fixed to the holder (1) via a fixing rod (8).

5. The regulating valve stem according to claim 1, characterized in that: The fixing rods (8) are arranged in a circular array with the central axis of the soft rubber protective cover (7) as the center, and the bottom of the soft rubber protective cover (7) is movably connected to the holder (1).

6. The regulating valve stem according to claim 1, characterized in that: The valve stem (2) and the plug (9) are threadedly connected.

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