A replacement structure of a high-pressure cleaning nozzle

Abstract

This utility model discloses a replacement structure for a high-pressure cleaning nozzle, relating to the technical field of high-pressure cleaning equipment. The utility model includes a high-pressure nozzle with a connecting sleeve fixedly connected to its surface. A water pipe is fitted inside the connecting sleeve, and a connecting fixing assembly is movably connected to the surface of the water pipe via a bearing. The connecting ring of this utility model is movably connected to the water pipe via a bearing, allowing for 360° free rotation. This avoids the cumbersome operation of precisely aligning threads required in traditional threaded connections. Under the elastic action of a spring, the limiting fixing sleeve quickly engages with a pin on the surface of the connecting sleeve via an inner wall groove. Combined with the guiding and positioning structure of the clamping plate and sliding groove, installation or disassembly can be completed simply by rotation. The operation is simple and quick. Even in confined spaces or high-altitude work scenarios, operators can complete the replacement with one hand without tools, completely solving the problems of traditional threaded connections requiring multiple rotations for alignment and the easy loosening of snap-fit ​​connections.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-pressure cleaning equipment, and in particular relates to a replacement structure for a high-pressure cleaning nozzle. Background Technology

[0002] In high-pressure cleaning operations such as industrial cleaning, environmental sanitation, and ship rust removal, the nozzle, as a key component of high-pressure cleaning equipment, directly affects the cleaning effect and operational efficiency. Because different cleaning scenarios have significantly different requirements for spray pressure, angle, and flow rate, nozzles often need to be frequently replaced according to actual needs during operation. However, traditional high-pressure cleaning equipment nozzle replacement structures generally suffer from low replacement efficiency and poor sealing reliability, becoming a technical bottleneck restricting the efficient implementation of cleaning operations.

[0003] In existing technologies, the connection between the nozzle and the high-pressure pipeline is mostly achieved through threaded connections. When using threaded connections, tools are needed to rotate and align the threads multiple times, which is cumbersome and time-consuming. Especially in confined spaces or high-altitude operations, the operation is difficult and the replacement can take several minutes, seriously affecting the progress of the operation.

[0004] In terms of sealing performance, traditional replacement structures often use single-layer sealing rings or simple end-face sealing designs. High-pressure water media generates strong vibrations and pressure fluctuations during spraying, and single-layer sealing rings are prone to deformation and aging under long-term alternating loads, leading to sealing failure and frequent leaks. Once leaks occur, not only does it reduce cleaning pressure and affect operational efficiency, but it can also cause water waste and safety hazards such as short circuits in equipment circuits.

[0005] To address these issues, we provide a replacement structure for a high-pressure cleaning nozzle. Utility Model Content

[0006] The purpose of this invention is to provide a replacement structure for a high-pressure cleaning nozzle. By combining the connecting and fixing components and the sealing components, the invention solves the problems of cumbersome installation and poor sealing performance of the existing connection structure.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a replacement structure for a high-pressure cleaning nozzle, comprising a high-pressure nozzle, a connecting sleeve fixedly connected to the surface of the high-pressure nozzle, a water pipe fitted inside the connecting sleeve, a connecting and fixing assembly movably connected to the surface of the water pipe via a bearing, a sealing assembly provided between the water pipe and the high-pressure nozzle, the connecting and fixing assembly including a connecting ring fixedly connected to the outer ring of the bearing, a connecting rod fixedly connected to one side of the connecting ring, a limiting fixing sleeve fitted to the surface of the connecting rod, a spring I fitted to the surface of the connecting rod, the two ends of the spring I being fixedly connected to the surfaces of the connecting ring and the limiting fixing sleeve respectively, a slot being formed in the inner wall of the limiting fixing sleeve, a locking plate being fixedly connected to the other side of the limiting fixing sleeve, and the sealing assembly including a sealing ring I fitted at the connection between the water pipe and the connecting sleeve and a support ring fixedly connected to the inner wall of the water pipe, and a sealing ring II fitted between the support ring and the high-pressure nozzle.

[0009] The present invention is further provided that the surface of the connecting sleeve is provided with a sliding groove, which is used in conjunction with the clamping plate. The cooperation between the sliding groove and the clamping plate provides a guiding and positioning function, which facilitates the docking and installation of the high-pressure nozzle.

[0010] The present invention is further configured such that the connecting and fixing assembly includes an installation groove formed on the surface of the connecting sleeve, a second spring is fixedly connected to the inner wall of the installation groove, and a pin is fixedly connected to the other end of the second spring. The second spring pushes the pin to engage with the slot, forming a secondary locking structure to prevent the limiting and fixing sleeve from loosening on its own due to vibration, thereby enhancing the reliability of the connection.

[0011] The present invention is further configured such that a receiving groove is provided at one end of the pin and the spring, and the other end of the pin adopts a spherical design. The spherical design at the end of the pin reduces the frictional resistance with the inner wall of the groove, and the gradual groove makes the engagement process smoother and reduces the resistance during operation.

[0012] The present invention is further configured such that a gradient groove is provided on one side of the slot, and the gradient groove gradually becomes shallower until it is flush with the inner wall of the limiting and fixing sleeve. The guiding effect of the gradient groove allows the pin to slide into the slot without precise alignment, further simplifying the installation steps and improving the error tolerance of the operation.

[0013] The present invention is further configured such that a receiving hole is provided on the side of the limiting and fixing sleeve away from the card plate, and the end of the connecting rod away from the connecting ring extends into the inner cavity of the receiving hole. The receiving hole provides axial movement space for the connecting rod, avoiding interference between the limiting and fixing sleeve and the end of the connecting rod when the sleeve moves, and ensuring the smoothness of the structural movement.

[0014] The present invention is further configured such that a corrugated rubber ring is fixedly connected between the connecting ring and the limiting fixing sleeve. The corrugated rubber ring covers the gap between the connecting ring and the limiting fixing sleeve, preventing high-pressure water and dust from entering the internal structure, extending the service life of the component, and helping to improve the overall sealing performance.

[0015] The present invention has the following beneficial effects.

[0016] 1. The connecting ring of this utility model is movably connected to the water pipe through a bearing, allowing for 360° free rotation. This avoids the tedious operation of precise thread alignment required by traditional threaded connections. Under the elastic action of spring one, the limiting and fixing sleeve quickly engages with the pin on the surface of the connecting sleeve through the inner wall groove. With the guide and positioning structure of the card plate and slide groove, installation or disassembly can be completed simply by rotating. The operation process is simple and quick. Even in confined spaces or high-altitude operation scenarios, operators can complete the replacement with one hand without the need for tools. This completely solves the problems of traditional threaded connections requiring multiple rotations for alignment and easy loosening of snap-fit ​​connections. It is especially suitable for high-pressure cleaning operations with frequent nozzle changes, greatly improving work efficiency and convenience.

[0017] 2. The first sealing ring of this utility model is installed at the connection between the water pipe and the connecting sleeve, forming the first radial sealing barrier; the second sealing ring is fixed to the inner wall of the water pipe by the support ring and fits tightly with the end face of the high-pressure nozzle, forming the second axial sealing surface. The double sealing structure works together under the vibration and pressure fluctuation of high-pressure water to effectively disperse the wear of the sealing ring by alternating load. The rigid support of the support ring avoids the sealing failure caused by pressure deformation of the sealing ring. Combined with the corrugated rubber ring protecting the gap between the connecting ring and the limiting fixing sleeve, the stability of the overall sealing structure under high pressure environment is significantly improved, the probability of water leakage is greatly reduced, and the safety and reliability of equipment operation are ensured. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a perspective view of the replacement structure of a high-pressure cleaning nozzle.

[0020] Figure 2 This is a cross-sectional schematic diagram of the replacement structure of a high-pressure cleaning nozzle.

[0021] Figure 3 This is a partial three-dimensional schematic diagram of the replacement structure of a high-pressure cleaning nozzle.

[0022] Figure 4 This is a three-dimensional schematic diagram of a limiting and fixing sleeve in the replacement structure of a high-pressure cleaning nozzle.

[0023] Figure 5 In a replacement structure for a high-pressure cleaning nozzle Figure 2 Enlarged diagram of point A in the middle.

[0024] In the attached diagram: 1. High-pressure nozzle; 2. Connecting sleeve; 3. Water pipe; 4. Connecting and fixing assembly; 41. Connecting ring; 42. Connecting rod; 43. Limiting and fixing sleeve; 44. Spring 1; 45. Slot; 46. Slot plate; 47. Mounting slot; 48. Spring 2; 49. Pin; 410. Receiving hole; 411. Corrugated rubber ring; 5. Sealing assembly; 51. Sealing ring 1; 52. Support ring; 53. Sealing ring 2; 6. Slide groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figure 1-5 This utility model is a replacement structure for a high-pressure cleaning nozzle, including a high-pressure nozzle 1. A connecting sleeve 2 is fixedly connected to the surface of the high-pressure nozzle 1. A water pipe 3 is fitted inside the connecting sleeve 2. A connecting and fixing assembly 4 is movably connected to the surface of the water pipe 3 through a bearing. A sealing assembly 5 is provided between the water pipe 3 and the high-pressure nozzle 1. The connecting and fixing assembly 4 includes a connecting ring 41 fixedly connected to the outer ring of the bearing. A connecting rod 42 is fixedly connected to one side of the connecting ring 41. A limiting fixing sleeve 43 is fitted to the surface of the connecting rod 42. A spring 44 is fitted to the surface of the connecting rod 42. The two ends of the spring 44 are fixedly connected to the surfaces of the connecting ring 41 and the limiting fixing sleeve 43, respectively. A slot 45 is opened on the inner wall of the limiting fixing sleeve 43. A locking plate 46 is fixedly connected to the other side of the limiting fixing sleeve 43. The sealing assembly 5 includes a sealing ring 51 fitted at the connection between the water pipe 3 and the connecting sleeve 2 and a support ring 52 fixedly connected to the inner wall of the water pipe 3. A second sealing ring 53 is fitted between the support ring 52 and the high-pressure nozzle 1.

[0028] Specifically: the inner cavity of the connecting sleeve 2 is coaxially fitted with the end of the water pipe 3, and the connecting ring 41 is rotatably connected by a bearing, so that the connecting ring 41 and the limiting and fixing sleeve 43 can rotate freely around the water pipe 3. The two ends of the spring 44 abut against the connecting ring 41 and the limiting and fixing sleeve 43 respectively. Under normal conditions, the limiting and fixing sleeve 43 is pulled to move closer to the connecting ring 41, while the clamping plate 46 is clamped on the surface of the connecting sleeve 2, forming a stable fixing structure. A gradient groove is provided on one side of the slot 45 to facilitate the smooth entry and exit of the pin 49 into and out of the slot 45.

[0029] Example 2

[0030] Please see Figure 1-5Based on Embodiment 1, the surface of the connecting sleeve 2 is provided with a sliding groove 6, which is used in conjunction with the clamping plate 46. The connecting and fixing assembly 4 also includes an installation groove 47 on the surface of the connecting sleeve 2. A second spring 48 is fixedly connected to the inner wall of the installation groove 47. A pin 49 is fixedly connected to the other end of the second spring 48. A receiving groove is provided at the opposite end of the pin 49 and the second spring 48. The other end of the pin 49 adopts a spherical design. A gradient groove is provided on one side of the clamping groove 45, and the gradient groove gradually becomes shallower until it is flush with the inner wall of the limiting and fixing sleeve 43. A receiving hole 410 is provided on the side of the limiting and fixing sleeve 43 away from the clamping plate 46. The end of the connecting rod 42 away from the connecting ring 41 extends into the inner cavity of the receiving hole 410. A corrugated rubber ring 411 is fixedly connected between the connecting ring 41 and the limiting and fixing sleeve 43.

[0031] Specifically: the cooperation between the slide groove 6 and the clamping plate 46 provides a guiding and positioning function, facilitating the docking and installation of the high-pressure nozzle 1. The spring 48 pushes the pin 49 to engage with the groove 45, forming a secondary locking structure to prevent the limiting fixing sleeve 43 from loosening due to vibration, thus enhancing the reliability of the connection. The spherical design at the end of the pin 49 reduces the frictional resistance with the inner wall of the groove 45, and the gradient groove makes the engagement process smoother, reducing resistance during operation. The guiding effect of the gradient groove allows the pin 49 to slide into the groove 45 without precise alignment, further simplifying the installation steps and improving the error tolerance of the operation. The receiving hole 410 provides axial movement space for the connecting rod 42, avoiding interference between the limiting fixing sleeve 43 and the end of the connecting rod 42 when the limiting fixing sleeve 43 moves, ensuring the smoothness of the structural movement. The corrugated rubber ring 411 covers the gap between the connecting ring 41 and the limiting fixing sleeve 43, preventing high-pressure water and dust from entering the internal structure, extending the service life of the components, and helping to improve the overall sealing performance.

[0032] The working principle of this utility model is as follows: Align the connecting sleeve 2 of the high-pressure nozzle 1 with the end of the water pipe 3, push the nozzle to insert the locking plate 46 into the sliding groove 6, push it axially until the limiting fixing sleeve 43 contacts the end face of the connecting sleeve 2, then pull the limiting fixing sleeve 43 to move it away from the connecting ring 41, then rotate the limiting fixing sleeve 43 to make the locking plate 46 lock in the end face of the connecting sleeve 2, and at the same time, the locking groove 45 passes over the top of the pin 49; when the pin 49 is aligned with the locking groove 45, the spring 2 48 pushes the pin 49 into the locking groove 45, completing the quick locking. During the process, the two sealing rings are deformed under radial and axial pressure respectively, forming a double seal. When high-pressure water passes through the water pipe 3, the first sealing ring prevents water from leaking along the gap between the outer wall of the water pipe 3 and the connecting sleeve 2. Under the rigid support of the support ring, the second sealing ring is tightly attached to the nozzle end face and withstands axial pressure fluctuations. The double sealing structure works together to effectively cope with the high-pressure vibration environment. The connecting and fixing component 4 maintains the axial positioning of the limiting fixing sleeve 43 during vibration through the engagement of the elastic component and the pin 49, preventing the nozzle from loosening and achieving the dual functions of efficient connection and reliable sealing.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A replacement structure for a high-pressure cleaning nozzle, comprising a high-pressure nozzle (1), characterized in that: A connecting sleeve (2) is fixedly connected to the surface of the high-pressure nozzle (1), and a water pipe (3) is fitted inside the cavity of the connecting sleeve (2). A connecting and fixing assembly (4) is movably connected to the surface of the water pipe (3) through a bearing. A sealing assembly (5) is provided between the water pipe (3) and the high-pressure nozzle (1). The connecting and fixing assembly (4) includes a connecting ring (41) fixedly connected to the outer ring of the bearing. A connecting rod (42) is fixedly connected to one side of the connecting ring (41). A limiting fixing sleeve (43) is sleeved on the surface of the connecting rod (42). A spring (44) is sleeved on the surface of the connecting rod (42). The two ends of the spring (44) are fixedly connected to the surfaces of the connecting ring (41) and the limiting fixing sleeve (43) respectively. A slot (45) is opened on the inner wall of the limiting fixing sleeve (43). A locking plate (46) is fixedly connected to the other side of the limiting fixing sleeve (43). The sealing assembly (5) includes a sealing ring (51) fitted at the connection between the water pipe (3) and the connecting sleeve (2) and a support ring (52) fixedly connected to the inner wall of the water pipe (3). A second sealing ring (53) is fitted between the support ring (52) and the high-pressure nozzle (1).

2. The replacement structure for a high-pressure cleaning nozzle according to claim 1, characterized in that: The surface of the connecting sleeve (2) is provided with a sliding groove (6), which is used in conjunction with the clamping plate (46).

3. The replacement structure for a high-pressure cleaning nozzle according to claim 1, characterized in that: The connecting and fixing assembly (4) further includes a mounting groove (47) formed on the surface of the connecting sleeve (2), and a second spring (48) is fixedly connected to the inner wall of the mounting groove (47), and a pin (49) is fixedly connected to the other end of the second spring (48).

4. The replacement structure for a high-pressure cleaning nozzle according to claim 3, characterized in that: The pin (49) has a receiving groove at one end opposite to the spring (48), and the other end of the pin (49) is spherical.

5. The replacement structure for a high-pressure cleaning nozzle according to claim 1, characterized in that: A gradient groove is provided on one side of the card slot (45), and the gradient groove gradually becomes shallower until it is flush with the inner wall of the limiting and fixing sleeve (43).

6. The replacement structure for a high-pressure cleaning nozzle according to claim 1, characterized in that: The limiting fixing sleeve (43) has a receiving hole (410) on the side away from the card plate (46), and the end of the connecting rod (42) away from the connecting ring (41) extends into the inner cavity of the receiving hole (410).

7. The replacement structure for a high-pressure cleaning nozzle according to claim 1, characterized in that: A corrugated rubber ring (411) is fixedly connected between the connecting ring (41) and the limiting fixing sleeve (43).

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