Special tool for disassembling high-pressure nozzle
By designing a double-locking structure of nozzle retaining ring and retaining spring, along with anti-loosening gaskets, the problem of difficult disassembly of high-pressure nozzles is solved, achieving an efficient and safe disassembly process and ensuring equipment stability and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINGYUAN IRON & STEEL CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-17
AI Technical Summary
Existing tools cannot efficiently disassemble high-pressure nozzles installed deep within the equipment, resulting in extended replacement times and impacting equipment stability and safety.
Design a special tool for disassembling high-pressure nozzles. It adopts a double locking structure of nozzle retaining ring and nozzle retaining spring, combined with anti-loosening gasket, to ensure a stable connection between the tool and the nozzle core and prevent loosening.
It improved the disassembly efficiency of high-pressure nozzles, reduced safety hazards, ensured equipment continuity and personnel safety, and prevented damage to parts.
Smart Images
Figure CN224129685U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a special tool for disassembling high-pressure nozzles. Background Technology
[0002] High-pressure nozzles are widely used in critical processes such as spray drying, cleaning, desulfurization and denitrification, and fuel injection in many industrial sectors. Their working environment is complex and harsh, often facing extreme conditions such as high temperature, high pressure, and strong corrosion.
[0003] After prolonged operation, high-pressure nozzles are prone to wear and clogging, requiring regular disassembly, maintenance, or replacement. Previously, maintenance personnel typically used conventional tools such as wrenches and pliers to disassemble the high-pressure nozzles. For example... Figure 1 As shown, this is an industry standard high-pressure nozzle with a wide range of applications. The example shown is just one application scenario, which is used in a high-pressure water descaling device in a rolling production line. The nozzle base is welded to the branch pipe of the high-pressure water descaling pipeline. The nozzle core is the core component of the high-pressure nozzle. It is often blocked or leaked due to the influence of the environment and water source, so it needs to be replaced frequently. Figure 3 The cylindrical working surface of the nozzle core and the corresponding inner surface of the nozzle base are interference-fitted. This ensures stable operation of the high-pressure nozzle under high pressure and prevents leakage. After the nozzle core is installed in the nozzle base, it is secured with a fixing nut. However, when the nozzle core needs to be replaced, there is no suitable tool to remove it from the nozzle base, making replacement time-consuming and laborious. It may even require cutting the branch pipe and replacing the entire high-pressure nozzle, extending replacement time and increasing maintenance requirements. The branch pipe is welded during the purchase of the high-pressure water descaling ring, ensuring welding quality. However, after cutting and replacing the entire nozzle, the welding quality cannot be guaranteed, reducing the stability of the descaling device. Therefore, a special tool is designed to facilitate the disassembly of the nozzle core. Utility Model Content
[0004] This utility model provides a special tool for disassembling high-pressure nozzles, which solves the technical problem that existing wrenches cannot disassemble high-pressure nozzles installed deep in the equipment, improves the work efficiency of replacing high-pressure nozzles, reduces safety hazards during high-pressure nozzle replacement, and avoids damage to the working mating surface or parts of the high-pressure nozzle during disassembly.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A special tool for disassembling a high-pressure nozzle includes a long screw, a sliding hammer, a nozzle retaining ring, a nozzle retaining spring, and a fixing screw. One end of the nozzle retaining ring has a groove that matches the head of the inner core of the high-pressure nozzle for engaging the inner core. The nozzle retaining spring is fixed to the nozzle retaining ring, forming a double locking structure together with the groove. The sliding hammer is sleeved on the outside of the long screw, and its inner hole is clearance-fitted with the long screw, allowing the sliding hammer to slide along the axial direction of the long screw.
[0007] Furthermore, a locking nut sleeve is fitted onto the long screw to fix the relative position of the nozzle retaining ring and the long screw.
[0008] Furthermore, the nozzle retaining ring is an elastic ring structure, with its inner edge having meshing teeth that match the outer wall of the nozzle inner core head. It is pressed into the retaining groove of the nozzle retaining ring by a fixing screw to form a radial lock.
[0009] Furthermore, the nozzle retaining ring is fixed to the nozzle retaining ring by a fixing screw.
[0010] Furthermore, the end of the long screw away from the nozzle retaining ring is provided with a hand grip, and the surface of the hand grip is provided with anti-slip texture for gripping and applying force during operation.
[0011] Furthermore, the threaded end of the locking nut is provided with an anti-loosening washer to prevent the locking nut from loosening when the sliding hammer reciprocates.
[0012] The beneficial effects of this utility model are as follows:
[0013] This invention employs a dual locking structure consisting of a nozzle retaining ring and a nozzle retaining spring. By utilizing the synergistic effect of the retaining groove and the elastic meshing teeth, it achieves both radial and axial fixation of the nozzle inner core head, preventing slippage between the tool and the nozzle inner core during disassembly. This significantly improves locking reliability and reduces the risk of component damage due to tool detachment.
[0014] This invention adds an anti-loosening washer to the threaded end of the lock nut, utilizing its elastic deformation characteristics to counteract the vibration generated by the reciprocating impact of the sliding hammer, thereby achieving the technical effect of preventing the lock nut from loosening. This ensures the stability of the long screw and the nozzle retaining ring during disassembly and avoids tool failure due to loosening.
[0015] In summary, this utility model improves the disassembly efficiency of high-pressure nozzles, ensures production continuity, reduces the labor intensity of maintenance personnel, ensures personnel safety, and at the same time improves disassembly quality to ensure stable equipment operation. Attached Figure Description
[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a cross-sectional view of the high-pressure nozzle structure in the prior art of this utility model.
[0018] Figure 2 This is a schematic diagram of the device of this utility model.
[0019] Figure 3 This is a partial structural diagram of the present utility model.
[0020] Figure 4 This is a schematic diagram of the nozzle retaining ring in this utility model.
[0021] Figure 5 This is a schematic diagram illustrating the application scenario of the device of this utility model.
[0022] Explanation of icon numbers:
[0023] 1. Long screw; 2. Sliding hammer; 3. Nozzle retaining ring; 4. Nozzle retaining spring; 5. Fixing screw; 6. Locking nut. Detailed Implementation
[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0027] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0028] This utility model provides a technical solution: a special tool for disassembling high-pressure nozzles, such as... Figure 2-5 The device includes a long screw 1, a sliding hammer 2, a nozzle retaining ring 3, a nozzle retaining spring 4, a fixing screw 5, and a locking nut 6. One end of the nozzle retaining ring 3 has a groove that fits the head of the high-pressure nozzle core, used to engage the nozzle core. The nozzle retaining spring 4 is fixed to the nozzle retaining ring 3 by the fixing screw 5, forming a double locking structure together with the groove. The locking nut 6 is fitted on the long screw 1 to fix the relative position of the nozzle retaining ring 3 and the long screw 1. The sliding hammer 2 is fitted outside the long screw 1, and its inner hole is clearance-fitted with the long screw 1, allowing the sliding hammer 2 to slide axially along the long screw 1.
[0029] The nozzle retaining ring 4 is an elastic ring structure with a meshing tooth on its inner edge that matches the outer wall of the nozzle inner core head. It is pressed into the groove of the nozzle retaining ring 3 by the fixing screw 5 to form a radial lock.
[0030] The long screw 1 is provided with a hand-held part at the end away from the nozzle retaining ring 3. The surface of the hand-held part is provided with anti-slip texture for gripping and applying force during operation.
[0031] The threaded end of the locking nut 6 is provided with an anti-loosening washer to prevent the locking nut 6 from loosening when the sliding hammer 2 reciprocates.
[0032] The fixing screw 5 is used to fix the nozzle retaining ring 4 to the nozzle retaining ring 3, and the locking nut 6 is used to lock the nozzle retaining ring 3 to prevent the long screw 1 and the nozzle retaining ring 3 from rotating against each other during the repeated sliding and striking of the sliding hammer 2.
[0033] like Figure 4 As shown, the nozzle retaining ring 4 is used to lock the high-pressure nozzle head. The nozzle retaining ring 3 is designed with a retaining groove that contacts the nozzle inner core head, and together with the nozzle retaining ring 4, locks the nozzle inner core head, providing double locking protection to ensure that it will not fall off.
[0034] The sliding hammer 2 and the long screw 1 are fitted with a clearance fit. This design serves three purposes: First, it provides necessary space for the relative movement of the sliding hammer 2 and the long screw, reducing friction and wear between the parts and ensuring smooth movement. Second, the clearance prevents excessive resistance or interference between the parts, reducing assembly difficulty and improving assembly efficiency. It also facilitates disassembly for inspection, replacement, or repair during maintenance and repair of the machinery. Third, the parts will expand thermally due to friction and heat. The clearance fit allows space for this expansion, preventing the fit from becoming too tight and affecting the relative movement between the sliding hammer 2 and the long screw 1.
[0035] like Figure 5 The image shows an application scenario.
[0036] 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 technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A high pressure nozzle dismounting tool, characterized in that It includes a long screw (1), a sliding hammer (2), a nozzle retaining ring (3), a nozzle retaining spring (4), and a fixing screw (5); one end of the nozzle retaining ring (3) is provided with a groove that is adapted to the head of the high-pressure nozzle core, for engaging the nozzle core; the nozzle retaining spring (4) is fixed on the nozzle retaining ring (3), and together with the groove, they form a double locking structure; the sliding hammer (2) is sleeved on the outside of the long screw (1), and its inner hole is clearance-fitted with the long screw (1), allowing the sliding hammer (2) to slide along the axial direction of the long screw (1).
2. The high pressure nozzle deinstallation tool according to claim 1, characterized in that A locking nut (6) is fitted on the long screw (1) to fix the relative position of the nozzle retaining ring (3) and the long screw (1).
3. The high pressure nozzle deinstallation tool according to claim 1, characterized in that The nozzle retaining ring (4) is an elastic ring structure. Its inner edge is provided with meshing teeth that match the outer wall of the nozzle inner core head. It is pressed into the groove of the nozzle retaining ring (3) by the fixing screw (5) to form radial locking.
4. The high pressure nozzle deinstallation tool according to claim 1, characterized in that The nozzle retaining ring (4) is fixed to the nozzle retaining ring (3) by a fixing screw (5).
5. The high pressure nozzle deinstallation tool according to claim 1, characterized in that The long screw (1) has a hand-held part at the end away from the nozzle retaining ring (3). The surface of the hand-held part is provided with anti-slip texture for gripping and applying force during operation.
6. The high pressure nozzle deinstallation tool according to claim 2, characterized in that The threaded end of the locking nut (6) is provided with an anti-loosening washer to prevent the locking nut (6) from loosening when the sliding hammer (2) reciprocates.