Device for removing the gland

Abstract

This application relates to a device for disassembling a pressure cap, characterized by comprising a sleeve and a force-applying rod; the sleeve is a hollow cylindrical structure with open ends, one end of which extends outward to form a handle that engages with the slotted edge of the outer pressure cap; the force-applying rod is a hollow cylindrical structure with open ends of a preset length, extending laterally through the sleeve, and rotating the force-applying rod generates torque on the sleeve. Through the above design, the outer pressure cap can be easily disassembled without damaging it, improving work efficiency and solving the technical problem of existing methods that involve soaking the bolts in bolt loosening liquid for 1-2 days and then slowly scraping along the outer edge of the thread using a flat-headed chisel inserted into the slotted groove, resulting in a lower overall work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heating systems, and more particularly to a device for removing pressure caps. Background Technology

[0002] Winter heating is a major issue affecting people's livelihoods in northern regions, and it is the primary concern for hundreds of millions of people to safely get through the cold winter. In the pipeline system, the balancing valve is a key device for regulating the hydraulic balance of the system. However, for balancing valves that have been in use for more than ten years, the disassembly and reassembly of the valve stem seat nut is crucial during the overhaul. Due to long-term heat stress deformation during use, coupled with water rust, dust corrosion, and the self-locking property of the triangular thread, the connection between the valve and the valve cover is very tight. The existing method is to soak the valve in bolt loosening liquid for 1-2 days and then slowly pry it open along the outside of the thread using a flat-headed chisel inserted into the slot. This results in a lower overall work efficiency. Utility Model Content

[0003] In view of this, this application provides a device for removing the gland, which provides a more convenient removal method.

[0004] According to one aspect of this application, a device for disassembling a pressure cap is provided, comprising a sleeve and a force-applying rod; the sleeve is a hollow cylindrical structure with openings at both ends, one end of the sleeve extending outwards with a handle, the handle engaging with a slotted part of an external pressure cap; the force-applying rod is a hollow cylindrical structure with openings at both ends of a predetermined length, the force-applying rod laterally penetrating the sleeve, and the rotation of the force-applying rod generating a torsional force on the sleeve.

[0005] In one possible implementation, the cross-sectional area of ​​the hand gradually decreases along the extension direction.

[0006] In one possible implementation, the number of clamps is two, and the two clamps are symmetrically arranged along the diameter of the tangential circle of the sleeve.

[0007] In one possible implementation, a locking block is also included, which is a ring-shaped plate structure disposed inside the sleeve.

[0008] In one possible implementation, the card block is positioned at the lower third of the length of the sleeve.

[0009] In one possible implementation, the card block has a first through hole, and the diameter of the first through hole is smaller than the diameter of the top of the external valve stem.

[0010] In one possible implementation, a second through hole is provided on the outer peripheral wall of the sleeve, the second through hole is opened into the other end of the sleeve, and there are two second through holes, which are symmetrically opened along the diameter of the tangential circle of the sleeve.

[0011] In one possible implementation, the force-applying rod passes through both of the second through holes.

[0012] In one possible implementation, the sleeve has a preset thickness.

[0013] In one possible implementation, the contact surface between the gripper and the slot of the external pressure cover is rectangular.

[0014] The beneficial effects of this utility model are as follows: By setting a sleeve and a force-applying rod, the sleeve and the force-applying rod are used in conjunction; the sleeve is a hollow cylindrical structure with open ends, and a handle extends outward from one end of the sleeve, which is engaged with the slot of the outer pressure cap. The sleeve covers the outer valve stem, and the handle is engaged with the slot of the outer pressure cap; the force-applying rod has a hollow cylindrical structure with open ends of a preset length, and the force-applying rod passes through the sleeve laterally. The rotation of the force-applying rod generates a torque on the sleeve. When the maintenance personnel twist the force-applying rod, the force-applying rod carries the sleeve, giving the sleeve a certain torque, which is transmitted to the outer pressure cap for disassembly. Attached Figure Description

[0015] Figure 1 This diagram shows a detailed structural diagram of the sleeve of the device for disassembling the gland according to an embodiment of this application;

[0016] Figure 2 A cross-sectional view of the sleeve of the device for removing the gland according to an embodiment of this application is shown;

[0017] Figure 3 A diagram illustrating the use of a device for removing a pressure cap according to an embodiment of this application is shown. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model or simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," "linking," and "hinged" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] It should be noted that the disassembly and assembly of the top valve stem seat nut is crucial during the overhaul of the balance valve. This nut is made of Hpb59-1 leaded brass and has a shape with threads on the outside, a central hole inside (through which the valve stem passes), and a flat washer of a certain thickness. One side of the flat washer has a through groove along the diameter direction. The valve stem seat nut is screwed into the inner hole of the valve cover by its external threads to tighten the valve stem.

[0024] like Figures 1-3 As shown, the device for disassembling the pressure cap includes a sleeve 100 and a force-applying rod 200. The sleeve 100 is a hollow cylindrical structure with open ends. One end of the sleeve 100 extends outward to form a handle 110, which engages with the slot of the outer pressure cap. The force-applying rod 200 is a hollow cylindrical structure with open ends of a preset length. The force-applying rod 200 passes laterally through the sleeve 100, and the rotation of the force-applying rod 200 generates a torsional force on the sleeve 100.

[0025] Specifically, the device for disassembling the cap includes a sleeve 100 and a force-applying rod 200. The sleeve 100 is designed to allow the external valve rod to pass through and engage with the slot of the external cap. The sleeve 100 is designed as a hollow structure with openings at both ends. Since both the external valve and the external cap are cylindrical, the sleeve 100 is also cylindrical for better fit. To enable the sleeve 100 to engage with the slot of the external cap, a handle extends outward from one end of the sleeve 100. However, since the slot of the external cap is rectangular, the contact surface between the handle 110 and the slot of the external cap should also be rectangular. Since the sleeve 100 is cylindrical, the cross-sectional area of ​​the handle 110 gradually decreases along the extension direction. From the side, the side of the handle 110 is a parabola. After the sleeve 100 is placed on the external valve stem, the maintenance personnel need to apply a torque to the sleeve 100. Therefore, a force-applying rod 200 is provided, which extends laterally through the sleeve 100 to facilitate the application of force by the maintenance personnel.

[0026] In one possible implementation, the number of chucks 110 is two, and the two chucks 110 are symmetrically arranged along the diameter of the tangential circle of the sleeve 100.

[0027] Specifically, such as Figure 1 As shown, in order to maintain balance when the sleeve 100 is connected to the external valve stem and to apply force better, two handles are provided. In other words, two extensions extend from one end of the sleeve 100 to form two handles 110. The two handles 110 are symmetrically arranged along the diameter of the cross-section circle of the sleeve 100. From the side, a U-shaped structure with a certain angle is formed on one end of the sleeve 100.

[0028] In one possible implementation, a locking block 120 is also included. The locking block 120 is a ring-shaped plate structure and is disposed inside the sleeve 100. The locking block 120 is positioned at the lower third of the length of the sleeve 100. A first through hole is formed on the locking block 120, and the diameter of the first through hole is smaller than the diameter of the top of the outer valve stem.

[0029] Specifically, such as Figure 2As shown, to ensure that the external valve stem does not extend beyond the other end of the sleeve 100 and to allow for better force application by maintenance personnel, a locking block 120 is provided. The locking block 120 is located inside the sleeve 100. Because the top of the external valve stem is circular, the locking block 120 is a circular plate-shaped structure. Furthermore, depending on the actual needs, the locking block 120 is positioned at the lower third of the length of the sleeve 100. To ensure that the external handwheel fixing screw can connect to the external valve stem through the sleeve 100, thereby fixing the sleeve 100 to the external valve stem, and further fixing the hand catch 110 to the external pressure cap, a first through hole is provided on the locking block 120. The external handwheel fixing screw connects to the external valve stem through the first through hole to achieve fixing.

[0030] In one possible implementation, a second through hole is provided on the outer peripheral wall of the sleeve 100, such as... Figure 1 As shown, two second through holes are opened at the other end of the sleeve 100, and the two second through holes are symmetrically opened along the diameter of the tangential circle of the sleeve 100. Figure 3 As shown, this arrangement allows the force-applying rod 200 to be vertically connected to the sleeve 100 through the two second through holes.

[0031] In one possible implementation, the sleeve 100 has a preset thickness. This configuration allows the sleeve 100 to withstand greater torque.

[0032] When using this application: the sleeve is placed on the external valve stem, the top of the external valve stem is connected to the bottom of the clamping block, the clamping hand is engaged with the slotted end of the external pressure block, and the external handwheel fixing screw passes through the clamping block and connects to the external valve stem, thereby fixing the sleeve to the external valve stem and further fixing the clamping hand to the external pressure cover. Then, the force-applying rod is inserted horizontally through the sleeve, and the maintenance personnel rotate the force-applying rod. The force-applying rod transmits torque to the sleeve, and further to the clamping hand, ultimately achieving the disassembly of the external pressure cover.

[0033] This application, through the above settings, allows for easy disassembly of the external pressure cap without damaging it, thus improving work efficiency. It also solves the technical problem of the existing method of soaking the bolts in bolt loosening liquid for 1-2 days and then slowly chipping them along the outside of the thread using a flat-headed chisel inserted into the slot, which results in a lower overall work efficiency.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for removing a pressure cap, characterized in that, Includes sleeve and force-applying rod; The sleeve is a hollow cylindrical structure with openings at both ends. One end of the sleeve extends outward to form a handle, which engages with the slot on the outer pressure cap. The force-applying rod has a hollow cylindrical structure with open ends of a preset length. The force-applying rod passes through the sleeve laterally, and the rotation of the force-applying rod generates torque on the sleeve.

2. The device for disassembling the gland according to claim 1, characterized in that, The cross-sectional area of ​​the clamp gradually decreases along the extension direction.

3. The device for disassembling the gland according to claim 2, characterized in that, The number of clamps is two, and the two clamps are symmetrically arranged along the diameter of the tangential circle of the sleeve.

4. The device for removing the gland according to any one of claims 1-3, characterized in that, It also includes a locking block, which is a ring-shaped plate structure and is disposed inside the sleeve.

5. The device for disassembling the gland according to claim 4, characterized in that, The locking block is positioned at the lower third of the length of the sleeve.

6. The device for disassembling the gland according to claim 5, characterized in that, The card block has a first through hole, and the diameter of the first through hole is smaller than the diameter of the top of the external valve stem.

7. The apparatus for removing the gland according to any one of claims 1-3, characterized in that, A second through hole is provided on the outer peripheral wall of the sleeve. The second through hole is opened into the other end of the sleeve. There are two second through holes, which are symmetrically opened along the diameter of the tangential circle of the sleeve.

8. The device for removing the gland according to claim 7, characterized in that, The force-applying rod passes through the two second through holes.

9. The device for removing the gland according to any one of claims 1-3, characterized in that, The sleeve has a preset thickness.

10. The apparatus for removing the gland according to any one of claims 1-3, characterized in that, The contact surface between the handle and the slotted part of the external pressure cover is rectangular.

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