Balancing cut-off valve packing gland tool

Abstract

The utility model discloses a kind of balanced stop valve packing gland tools, including magnet base, fixed telescopic size rod, telescopic size rod, hand screwing screw rod packing gland bearing plate, and balanced stop valve packing gland tool is provided with two. The utility model cooperates by the two balanced stop valve packing gland tools placed in the lower side of the two ends of stop valve packing gland, to read the scale on telescopic size rod, when the scale on two telescopic size rods is equal and packing gland contacts packing gland bearing plate in the process of descending, stop valve packing gland is in equilibrium state.

Description

Technical Field

[0001] This utility model relates to the field of packing gland installation technology, specifically to a packing gland tool for a balanced shut-off valve. Background Technology

[0002] When installing the packing gland of a gate valve, special attention must be paid to its balance and tightness. If the packing gland is not installed evenly, it will deform after prolonged use. If the packing gland is installed too loosely, it will leak. If the packing gland is installed too tightly, it will damage the packing and cause leakage.

[0003] Secondly, people often memorize the number of rotations of the packing gland nuts on both sides, or directly inject water into the gate valve to check for leaks and adjust the tightness of the packing gland. However, such methods are often too complicated or difficult to implement. Therefore, how to more quickly balance the packing gland and adjust its tightness during gate valve installation is an important research topic. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to more quickly balance the packing gland and adjust its tightness when installing the packing gland of a gate valve. The purpose is to provide a tool for balancing the packing gland of a gate valve, thereby solving the problem of how to more quickly balance the packing gland and adjust its tightness when installing the packing gland of a gate valve.

[0005] This utility model is achieved through the following technical solution:

[0006] A balanced shut-off valve packing gland tool includes a convex-shaped magnet base, a fixed telescopic rod above the magnet base with its axis perpendicular to the upper surface of the magnet base, a hand-tightening screw on the circumference of the fixed telescopic rod, and a telescopic rod above the fixed telescopic rod that can move up and down within the fixed telescopic rod. Above the telescopic rod is a packing gland support plate with its lower surface perpendicular to the axis of the telescopic rod. The magnet base, fixed telescopic rod, telescopic rod, and packing gland support plate form a vertically fixed structure. Two balanced shut-off valve packing gland tools are provided, and the two tools must be used in conjunction. The magnet base supports the entire tool and has a magnet at its bottom that can adhere to the upper surface of the valve cover flange, effectively preventing slippage of the packing gland tool. The fixed telescopic rod is the connecting rod of the entire tool, connecting to the magnetic base at the bottom and the telescopic rod at the top. The position of the telescopic extension rod is fixed by hand-tightening the screw. When the telescopic extension rod moves to a certain position, the screw is rotated to hold it in place. The telescopic extension rod is used to adjust the height of the entire tool and can also balance the packing gland by using the common position of the telescopic extension rods of the two balanced shut-off valve packing gland tools. The magnet base, the fixed telescopic extension rod, the telescopic extension rod, and the packing gland support plate form an adjustable height structure that supports the packing gland. When using the balanced shut-off valve tool, place one balanced shut-off valve packing gland tool at each end of the packing gland. First, calculate the appropriate height position of the packing gland, then adjust the two balanced shut-off valve packing gland tools to the same height. When installing the packing gland, stop rotating the fixed packing gland nut when both ends touch the packing gland support plate of the balanced shut-off valve packing gland. At this time, the packing gland is in a balanced state.

[0007] Furthermore, the lower half of the magnet base is a magnet. The magnet's function is to fix the valve cover flange by magnetic attraction, preventing slippage of the packing gland tool during the packing gland balancing process.

[0008] Furthermore, the cross-section of the fixed telescopic rod is circular or rectangular. The circular or rectangular cross-section of the fixed telescopic rod facilitates its vertical movement within the fixed telescopic rod.

[0009] Furthermore, the cross-section of the telescopic rod is circular or rectangular. The circular or rectangular cross-section of the telescopic rod is for the purpose of securing it in place.

[0010] Furthermore, the packing gland support plate has a groove to accommodate the screw post. Because the threaded hole on the packing gland is elongated, the fixing screw is prone to misalignment when rotating the packing gland nut, which can lead to an unbalanced packing gland installation. Therefore, a groove is provided to accommodate the fixing screw.

[0011] Furthermore, the surface of the telescopic rod has dimensional graduations. The graduations are designed to ensure that the packing gland tools on both sides of the packing gland are at the same height, and also to accurately balance the packing glands of the shut-off valves.

[0012] Furthermore, the hand-tightening screw is a tool used to increase the friction between the fixed telescopic rod and the telescopic rod. Rotating the hand-tightening screw increases the friction between the fixed telescopic rod and the telescopic rod, thereby fixing the telescopic rod within the fixed telescopic rod.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] 1. This utility model provides a tool for balancing the packing gland of a shut-off valve. In the process of installing the packing gland, the traditional method of balancing the packing gland involves recording the number of rotations of the fixing nuts on both sides of the packing gland to ensure that the number of rotations of the fixing nuts on both sides of the packing gland is consistent. Compared with the traditional method of balancing the packing gland, this tool can balance the packing gland more conveniently and quickly.

[0015] 2. This utility model provides a packing gland tool for a balanced stop valve. The traditional method for testing the tightness of the packing gland is to inject water into the stop valve and check for leakage. However, this utility model can calculate a specific tightness height and then position the packing gland using the scales on the two telescopic rods. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is the main view of the structure of this utility model.

[0019] Figure 3 This is a top view of the packing gland bearing plate of this utility model.

[0020] Figure 4 This is an application scenario diagram showing the initial position of the packing gland structure of this utility model.

[0021] Figure 5 This is a diagram illustrating the application scenario of the completed state of the packing gland structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the packing gland structure of this utility model.

[0023] Figure 7 This is a top view of the packing gland structure of this utility model.

[0024] The attached diagram shows the markings and corresponding component names:

[0025] 1-Magnetic base, 2-Fixed telescopic rod, 3-Telescopic rod, 4-Packaging gland support plate, 5-Hand-tightening screw, 6-Packaging gland, 7-Valve cover flange, 8-Packaging, 9-Valve stem, 10-Fixed packing gland screw, 11-Fixed packing gland nut. Detailed Implementation

[0026] 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 embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0027] Example

[0028] like Figure 1 and Figure 2As shown, this utility model discloses a packing gland tool for a balanced shut-off valve, comprising a convex-shaped magnet base 1, a fixed telescopic rod 2 above the magnet base 1, the axis of the fixed telescopic rod 2 being perpendicular to the upper surface of the magnet base 1, a hand-tightening screw 5 on the circumference of the fixed telescopic rod 2, and a telescopic rod 3 above the fixed telescopic rod 2, which can move up and down within the fixed telescopic rod 2. Above the telescopic rod 3 is a packing gland support plate 4, the lower surface of which is perpendicular to the axis of the telescopic rod 3. The magnet base 1, the fixed telescopic rod 2, the telescopic rod 3, and the packing gland support plate 4 form a vertically fixed structure. Two balanced shut-off valve packing gland tools are provided, and the two tools must be used in conjunction. The magnet base 1 supports the entire tool and has a magnet at its bottom, which can be attracted to the upper surface of the valve cover flange 7, effectively preventing the packing gland tool from slipping. The fixed telescopic rod 2 is the connecting rod of the entire tool, connecting the magnet base 1 at the bottom and the telescopic rod 3 at the top. The hand-tightening screw 5 fixes the position of the telescopic rod 2. When the telescopic rod 3 moves up and down to a certain position after the fixed telescopic rod 2, the hand-tightening screw 5 is rotated to press against the telescopic rod 3, thus fixing the telescopic rod 3 in one position. The telescopic rod 3 is used to adjust the height of the entire tool and can also balance the packing gland 6 by the common position of the telescopic rods 3 of the two balanced shut-off valve packing gland tools. The magnet base 1, the fixed telescopic rod 2, the telescopic rod 3, and the packing gland support plate 4 form an adjustable height structure that can support the packing gland 6. When using the balanced shut-off valve tool, a balanced shut-off valve packing gland tool is placed at each end of the packing gland 6. The appropriate height position of the packing gland 6 is calculated first, and then the two balanced shut-off valve packing gland tools are adjusted to the same height. When the packing gland 6 is installed, when both ends touch the packing gland support plate 4 of the balanced shut-off valve packing gland 6, the rotation of the fixed packing gland nut 11 can be stopped. At this time, the packing gland is in a balanced state.

[0029] Specifically, the lower half of the magnet base 1 is a magnet. The function of the magnet is to fix it to the valve cover flange 7 by magnetic attraction, so as to prevent the balancing packing gland tool of the shut-off valve from slipping during the balancing packing gland 6 process.

[0030] Specifically, the cross-section of the fixed telescopic rod 2 is circular or rectangular. The circular or rectangular cross-section of the fixed telescopic rod 2 facilitates the vertical movement of the telescopic rod 3 within the fixed telescopic rod 2.

[0031] Specifically, the cross-section of the telescopic rod 3 is circular or rectangular. The circular or rectangular cross-section of the telescopic rod 3 is for use in fixing the telescopic rod 2.

[0032] Specifically, such as Figure 3 , Figure 6 and Figure 7 As shown, the packing gland support plate 4 has a groove to accommodate the screw post. Because the threaded hole on the packing gland 6 is elongated, the fixing screw 10 is prone to becoming non-perpendicular when rotating the fixing nut 11, which can lead to an unbalanced installation of the packing gland 6. Therefore, a groove is provided to accommodate the fixing screw 10.

[0033] Specifically, the surface of the telescopic rod 3 has a dimensional scale. The dimensional scale is set to ensure that the packing gland tools of the balance shut-off valve on both sides of the packing gland 6 are at the same height, and also to accurately balance the packing gland 6 of the shut-off valve.

[0034] Specifically, the hand-tightening screw 5 is a tool used to increase the friction between the fixed telescopic rod 2 and the telescopic rod 3. Rotating the hand-tightening screw increases the friction between the fixed telescopic rod 2 and the telescopic rod 3, thereby fixing the telescopic rod 3 within the fixed telescopic rod 2.

[0035] The working principle of this embodiment is explained as follows: Figure 4 and 5 As shown, since the packing gland 6 passes through the valve stem 9, the only part of the gate valve seat that needs to be installed with the packing gland 6 is the entire gate valve seat. First, two balancing gate valve packing gland tools are installed on both sides of the gate valve packing gland 6. Since the height of the packing gland 6 and the packing 8 can be calculated, a suitable height for the packing gland 6 can be obtained. Then, the two telescopic rods 3 are adjusted to the appropriate height for the packing gland 6 using the scale on the telescopic rods 3. Next, the hand-tightening screw 5 is tightened to fix the telescopic rod 3 at the appropriate height for the packing gland 6. Then, the fixing packing gland screw 10 below the packing gland 6 is inserted into the elongated hole of the packing gland 6, and the fixing packing gland nut 11 is aligned with the fixing packing gland screw 10 and rotated several times. Next, align the grooves of the packing gland bearing plates 4 of the two balanced shut-off valve packing gland tools with the fixing packing gland screws 10, ensuring the screws 10 are within the grooves. Then, rotate the fixing packing gland nuts 11 on both sides of the packing gland 6. At this point, the packing gland 6 descends and contacts the packing gland bearing plates 4, achieving a balanced state. The installation of the packing gland 6 is now complete. Finally, raise the valve stem 9 to check if the operation is suitable. If not, adjust the height of the packing gland 6.

[0036] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A packing gland tool for a balanced shut-off valve, characterized in that, There is a convex magnet base (1), and a fixed telescopic rod (2) is above the magnet base (1). The axis of the fixed telescopic rod (2) is perpendicular to the upper surface of the magnet base (1). There is a hand-tightening screw (5) on the circumference of the fixed telescopic rod (2). There is also a telescopic rod (3) above the fixed telescopic rod (2). The telescopic rod (3) can move up and down inside the fixed telescopic rod (2). There is also a packing gland support plate (4) above the telescopic rod (3). The lower surface of the packing gland support plate (4) is perpendicular to the axis of the telescopic rod (3). The magnet base (1), the fixed telescopic rod (2), the telescopic rod (3) and the packing gland support plate (4) form a vertical fixed structure. There are two packing gland tools for the balance stop valve, and the two packing gland tools need to be used together.

2. The packing gland tool for a balanced shut-off valve according to claim 1, characterized in that, The lower half of the magnet base (1) is a magnet.

3. The packing gland tool for a balanced shut-off valve according to claim 1, characterized in that, The cross-section of the fixed telescopic rod (2) is circular or rectangular.

4. The packing gland tool for a balanced shut-off valve according to claim 1, characterized in that, The cross-section of the telescopic rod (3) is circular or rectangular.

5. A packing gland tool for a balanced shut-off valve according to claim 1, characterized in that, The packing gland bearing plate (4) has a groove for accommodating the screw post.

6. The packing gland tool for a balanced shut-off valve according to claim 1, characterized in that, The surface of the telescopic rod (3) has a size scale.

7. A packing gland tool for a balanced shut-off valve according to claim 1, characterized in that, The hand-tightening screw (5) is a tool used to increase the friction of the fixed telescopic rod (2) and the telescopic rod (3).

Images