Special mounting tool for valve filling device

Abstract

The utility model discloses a special mounting tool for a valve packing device, relates to the technical field of valve tools, and aims to ensure that the valve packing device can be quickly mounted and dismounted. Comprising a sleeve, a containing hole allowing a valve rod to enter is formed in the sleeve from bottom to top, an inserting edge is integrally arranged on the bottom face of the sleeve and protrudes outwards in the axial direction, and the position, except for the inserting edge, of the bottom face of the sleeve is in a plane shape. During actual installation, the valve rod can smoothly enter the containing hole, meanwhile, the inserting edge is embedded into the notch groove in the top face of the gland, the bottom face of the inserting edge makes contact with the plane of the top face of the gland, and the unstable conditions such as deviation and shaking of a tool in the operation process are avoided; according to the valve sealing packing device, rotating force applied to the sleeve by an operator can directly act on the gland through the inserting edges, so that the gland can quickly and stably complete screwing or unscrewing actions according to preset requirements, and the mounting and dismounting efficiency of the valve sealing packing device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of valve tools, and in particular to a special installation tool for valve packing devices. Background Technology

[0002] As industrial production demands increasingly sophisticated and efficient equipment, the installation accuracy and speed of valve packing devices need to be improved accordingly. Lacking specialized tools, operators must expend considerable extra effort trying different tool combinations and making temporary adjustments to operating methods during large-scale production or emergency repairs. This can hinder production progress and even lead to valve seal failure and fluid leakage due to improper installation. For example, a radial notch is created on the top surface of the packing gland to allow it to be screwed into the valve body. However, traditional general-purpose tools are unsuitable for this type of valve packing device with its unique structure. On one hand, because the gland of this valve packing device is connected to the packing chamber via threads, and the top space is limited by the valve stem, ordinary wrenches and other tools are difficult to use for precise engagement, easily resulting in slippage. On the other hand, the notch on the top surface of the gland is designed to achieve uniform force application and improve sealing performance, but its unique radial layout and dimensional requirements make it impossible for conventional tools to be inserted and apply force stably. Operators cannot smoothly tighten or loosen the gland according to the design intent using existing tools, failing to fully utilize the advantages of the valve packing device, thus affecting the installation, commissioning, and subsequent maintenance efficiency of the entire valve system. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art by providing a special installation tool for valve packing devices, so as to ensure that valve sealing packing devices can be quickly installed and disassembled.

[0004] The technical solution of this utility model includes a sleeve, which has a receiving hole from bottom to top for the valve stem to enter. The bottom surface of the sleeve is integrally provided with a insertion ridge, which protrudes outward axially. The bottom surface of the sleeve, except for the insertion ridge, is flat.

[0005] By adopting the above technical solution, during actual installation, the valve stem can smoothly enter the receiving hole. At the same time, the insert edge is embedded in the notch groove on the top surface of the gland, and the bottom surface contacts the top surface of the gland, avoiding instability such as tool deviation or shaking during operation. The rotational force applied by the operator to the sleeve can be directly applied to the gland through the insert edge. In this way, the gland can quickly and smoothly complete the tightening or loosening action according to the preset requirements, improving the installation and disassembly efficiency of the valve sealing packing device.

[0006] A further feature of this invention is that a handle is installed on the top of the sleeve, the handle being inserted radially through the sleeve and exposed on the outer circumferential surface of the sleeve.

[0007] With the above-mentioned further design, the handle allows the operator to grip the tool in a more natural and effortless way to apply force, so as to smoothly tighten or loosen the sleeve.

[0008] A further feature of this invention is that a limiting platform and a reduced diameter surface are formed on the outer circumferential surface of the sleeve, the reduced diameter surface is located below the limiting platform, and the outer diameter of the reduced diameter surface is smaller than the outer diameter of the limiting platform.

[0009] With the above-mentioned further configuration, the reduced diameter surface can enter the stuffing box of the stuffing device, while the limiting platform abuts against the top inlet position of the stuffing box to prevent the tool from being screwed further into the stuffing box, thus avoiding damage to the stuffing box caused by the gland being too tight. At the same time, the screwing depth of the gland can be determined by the position of the limiting platform, so as to select an appropriate depth.

[0010] A further improvement of this invention is that the number of insert ridges is at least two, and they are evenly distributed along the circumferential direction of the bottom surface of the sleeve.

[0011] By adopting the above-mentioned further configuration, at least two insertion ridges can ensure uniform force application, making the pressure on the gland more uniform, ensuring the consistency of the gland's tightening pressure on the packing gland, and improving the valve's sealing performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model;

[0013] Figure 2 This is a structural diagram illustrating the installation process of this utility model;

[0014] Among them, 1. Sleeve; 11. Receiving hole; 12. Insertion ridge; 13. Limiting platform; 14. Reduction surface; 2. Handle; 31. Gland; 311 Notch groove; 32. Stuffing gland; 33. Valve body; 34. Valve stem. Detailed Implementation

[0015] like Figure 1 , Figure 2The illustration shows a special installation tool for a valve packing device. The valve packing device includes a gland 31, a stuffing box 32, a valve body 33, and a valve stem 34. The special installation tool includes a sleeve 1. The sleeve 1 has a receiving hole 11 from bottom to top for the valve stem 34 to enter. The size of the receiving hole 11 is larger than the outer diameter of the valve stem 34 to ensure that the valve stem 34 can slide smoothly into it. The bottom surface of the sleeve 1 is integrally provided with a insertion ridge 12, which protrudes outward axially. The insertion ridge 12 is designed according to the notch groove 311 structure on the top surface of the gland 31 of the valve packing device. Its shape and size fit the notch groove 311 and can be embedded in the notch groove 311 to realize the transmission of force. The bottom surface of the sleeve 1, except for the insertion ridge 12, is flat. When the sleeve 1 is placed on the gland 31, the flat part has a large contact area with the top surface of the gland 31, forming a stable support surface and effectively preventing the tool from shifting or shaking during operation. During the actual installation of the valve sealing packing device, the operator first aligns the receiving hole 11 of the sleeve 1 with the valve stem 34, and gently lowers the sleeve 1 so that the valve stem 34 smoothly enters the receiving hole 11 until the bottom surface of the sleeve 1 is nearly in contact with the top surface of the gland 31. At this time, the insert 12 is inserted into the notch 311 on the top surface of the gland 31, and the operator can then operate the gland 31 by rotating the sleeve 1. Due to the tight fit between the insert 12 and the notch 311, as well as the tight fit between the bottom surface of the sleeve 1 and the top surface of the gland 31, the rotational force applied by the operator to the sleeve 1 can be directly and stably applied to the gland 31 through the insert 12, allowing the gland 31 to quickly and smoothly complete the tightening or loosening action according to the preset requirements, thus improving the installation and disassembly efficiency of the valve sealing packing device.

[0016] To further optimize the user experience, a handle 2 is installed on the top of the sleeve 1. The handle 2 is inserted radially through the sleeve 1 and protrudes from its outer circumference. The handle 2 can be fixed in one position or can be movably inserted through the sleeve 1. When it is necessary to tighten or loosen the sleeve 1, the operator only needs to apply a small force to the handle 2. According to the lever principle, a small force can be converted into a large rotational torque through the handle 2, easily driving the sleeve 1 to rotate, thereby achieving quick operation of the cap 31 and making the operation process more convenient.

[0017] The outer circumferential surface of sleeve 1 forms a limiting platform 13 and a reduced diameter surface 14. The reduced diameter surface 14 is located below the limiting platform 13, and its outer diameter is smaller than that of the limiting platform 13. During the installation of the valve sealing packing device, the reduced diameter surface 14 can smoothly enter the packing chamber of the packing device. Its smaller outer diameter is to adapt to the relatively narrow space inside the packing chamber and avoid interference with the inner wall of the packing chamber. The limiting platform 13 rests against the top inlet of the packing chamber, serving as a limiting element. On the one hand, the limiting platform 13 prevents the tool from being screwed further into the packing chamber during rotation, avoiding excessive screwing that would cause the gland 31 to press too tightly against the stuffing box 32 inside the packing chamber, thus protecting the stuffing box 32 from damage and extending its service life. On the other hand, the operator can accurately determine the screwing depth of the gland 31 by observing the relative position of the limiting platform 13 and the top inlet of the packing chamber, and then select an appropriate screwing depth according to actual needs to ensure the installation accuracy of the valve sealing packing device and guarantee the valve's sealing performance.

[0018] The sleeve 1 has at least two insert ridges 12, which are evenly distributed along the circumference of the bottom surface of the sleeve 1. When the operator rotates the sleeve 1, at least two insert ridges 12 can simultaneously apply force to the gland 31, ensuring that the pressure on the gland 31 is more even and avoiding excessive force at a single point, which could cause deformation or damage to the gland 31. The evenly stressed gland 31 can apply a stable and consistent tightening pressure to the stuffing box 32, so that the packing in the stuffing box 32 fits tightly against the packing cavity of the valve body 33, effectively improving the valve's sealing performance.

Claims

1. A special installation tool for valve packing devices, characterized in that: The sleeve is provided with a receiving hole for the valve rod from bottom to top, and the bottom surface of the sleeve is integrally provided with an insertion rib which is convex outward in axial direction and the bottom surface of the sleeve is flat except the insertion rib.

2. The special installation tool for valve packing according to claim 1, characterized in that: The top of the sleeve is provided with a handle which is inserted into the sleeve along the radial direction of the sleeve and exposed on the outer circumferential surface of the sleeve.

3. A special installation tool for valve packing according to claim 1 or 2, characterized in that: The outer circumferential surface of the sleeve is formed with a limiting platform and a reduced diameter surface which is below the limiting platform and has a smaller outer diameter than the limiting platform.

4. A special installation tool for valve packing according to claim 1 or 2, characterized in that: The number of the insertion ribs is at least two which are uniformly distributed along the circumferential direction of the bottom surface of the sleeve.

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