An adjustable cavitation jet nozzle

Abstract

This invention relates to the field of nozzle technology, specifically disclosing an adjustable cavitation jet nozzle, comprising a nozzle and an outer cover. An inner circular plate is fixedly connected inside the nozzle. A rectangular adjustment hole is formed in the center of the inner circular plate. Four adjustment plates are slidably arranged inside the inner circular plate, arranged in a circumferential array. Each of the four adjustment plates has a movable groove inside, and two sealing plates are slidably arranged within each movable groove. Two adjacent sealing plates, not in the same adjustment plate, are fixedly connected. A first slot is formed inside the inner circular plate for the sliding of the adjustment plates and sealing plates. This invention allows adjustment of the cavitation nozzle's own diameter. By changing the nozzle's own diameter and internal flow channel pattern, it can adapt to different scenarios, saving time compared to installing different models of nozzles for different scenarios.

Description

Technical Field

[0001] This invention relates to the field of nozzle technology, specifically to an adjustable cavitation jet nozzle. Background Technology

[0002] Cavitation is a phenomenon characterized by the explosive growth of cavitation bubbles caused by the evaporation of a liquid due to localized low pressure. The powerful impact force generated by the collapse of these cavitation bubbles enhances the jet's effect. A jet formed through a nozzle induces cavitation bubbles filled with water vapor within the liquid. The high-pressure shock waves and energy generated when these bubbles collapse create extremely high impact pressure and stress concentration in localized areas of the object's surface, causing rapid surface damage. This results in phenomena such as plastic deformation, cavitation enhancement, and cavitation erosion. The nozzle is a key component in generating cavitation jets, and its structure significantly influences the jet's dynamic performance and internal flow field.

[0003] According to a cavitation jet testing device and an adjustable nozzle with authorized patent number CN116020671A, the nozzle body has a through channel in the middle, and multiple sealing adjustment blocks are arranged circumferentially within the through channel. One end of the adjustment rod of the adjustment unit is connected to a sealing adjustment block and extends away from the sealing adjustment block. A linkage gear is rotatably mounted on the nozzle body, and teeth on both sides of the adjustment rod mesh with the linkage gears on both sides. The linkage gears of two adjacent adjustment units mesh. Through the design of multiple adjustment units, different nozzle shapes and diameters can be adjusted without frequent changes to the nozzle style, ensuring that the flow channel is special while meeting different flow channel sizes.

[0004] Although the above-mentioned device can adjust the nozzle diameter, the multiple sealing adjustment blocks in the device cannot achieve a seal, which will affect the spraying effect of the nozzle. Moreover, its adjustment range is severely limited because multiple sealing adjustment blocks are prone to collision when they move inward at the same time. Therefore, an adjustable cavitation jet nozzle is provided. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by providing an adjustable cavitation jet nozzle to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an adjustable cavitation jet nozzle, comprising a nozzle and an outer cover, wherein an inner circular plate is fixedly connected inside the nozzle, a rectangular adjustment hole is provided in the middle of the inner circular plate, four adjustment plates are slidably arranged inside the inner circular plate, the four adjustment plates are distributed in a circumferential array, each of the four adjustment plates is provided with a movable groove, and two sealing plates are slidably arranged in the movable groove, the two adjacent sealing plates not in the same adjustment plate are fixedly connected, and a first slot is provided inside the inner circular plate for the adjustment plates and sealing plates to slide;

[0007] The nozzle has a second slot corresponding to the first slot on its circumference. A first support plate and a second support plate are fixedly connected to the outer surface of the nozzle. A threaded rod is rotatably mounted on the first support plate. A threaded plate is threadedly connected to the outer surface of the threaded rod. The threaded plate is fixedly connected to the adjusting plate. A rotating shaft is rotatably mounted on the second support plate. Both the rotating shaft and the outer surface of the threaded rod are fixedly connected to bevel gears, and the two bevel gears mesh with each other.

[0008] A gear ring is rotatably mounted on the outer surface of the nozzle, and a spur gear is fixedly connected to the outer surface of multiple rotating shafts. The spur gear meshes with the gear ring. A motor is mounted on the back of the second support plate, and the output end of the motor is fixedly connected to one end of one of the rotating shafts.

[0009] As a preferred embodiment of the present invention, the first support plate and the second support plate are welded to the outer surface of the nozzle.

[0010] In a preferred embodiment of the present invention, the threaded plate and the adjusting plate are connected by bolts or welding.

[0011] As a preferred embodiment of the present invention, the movable groove is provided with a track for moving the sealing plate.

[0012] As a preferred embodiment of the present invention, the outer surface of the nozzle is fitted with an outer cover, which is used to cover the bevel gear and the spur gear inside.

[0013] As a preferred embodiment of the present invention, two adjacent sealing plates are welded together.

[0014] In a preferred embodiment of the present invention, the motor is mounted on the second support plate by bolts.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention can adjust the diameter of the cavitation nozzle itself. By changing the diameter and internal flow channel pattern of the cavitation nozzle, it can be adapted to different scenarios. Compared with installing different models of nozzles in different scenarios, it can save time.

[0017] This invention enables the motor to drive four adjusting plates to move inward or outward simultaneously. Combined with the inner circular plate, this allows for adjustment of the nozzle's diameter, thus adapting to different scenarios. Compared to installing different nozzle models for different scenarios, this saves time.

[0018] This invention, by setting a sealing plate, can block the gap between two adjacent adjusting plates, thereby achieving a seal in the nozzle diameter and ensuring the spraying effect of the nozzle. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the nozzle of the present invention;

[0021] Figure 3 This is a partial cross-sectional perspective view of the nozzle of the present invention;

[0022] Figure 4 This is a connection diagram of the nozzle and threaded rod of the present invention;

[0023] Figure 5 This is a schematic diagram of the meshing structure of the gear and gear ring of the present invention;

[0024] Figure 6 This is a schematic diagram of the inner circular plate, sealing plate, and adjusting plate of the present invention;

[0025] Figure 7 This is a front view of the inner circular plate of the present invention.

[0026] In the diagram: 1. Nozzle; 2. Inner circular plate; 3. Adjusting plate; 4. Sealing plate; 5. Threaded plate; 6. Threaded rod; 7. First support plate; 8. Second support plate; 9. Rotating shaft; 10. Bevel gear; 11. Circular gear; 12. Gear ring; 13. Motor; 14. Outer cover; 15. First slot; 16. Second slot; 17. Movable groove; 18. Adjusting hole. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0028] Example: Please refer to Figure 1-7 The present invention provides a technical solution: an adjustable cavitation jet nozzle, including a nozzle 1 and an outer cover 14. An inner circular plate 2 is fixedly connected inside the nozzle 1. A rectangular adjustment hole 18 is opened in the middle of the inner circular plate 2. Four adjustment plates 3 are slidably arranged inside the inner circular plate 2. The size of the adjustment hole 18 is changed by sliding the four adjustment plates 3, thereby adjusting the inner diameter of the nozzle 1. The four adjustment plates 3 are arranged in a circumferential array. Each of the four adjustment plates 3 is provided with a movable groove 17. Two sealing plates 4 are slidably arranged in the movable groove 17. Two adjacent sealing plates 4 that are not in the same adjustment plate 3 are fixedly connected. The gap between the adjustment plates 3 is blocked by the adjacent sealing plates 4, thereby achieving the sealing of the orifice and ensuring the spraying effect of the nozzle. A first slot 15 is opened inside the inner circular plate 2 for the adjustment plates 3 and sealing plates 4 to slide.

[0029] The nozzle 1 has a second slot 16 on its periphery corresponding to the first slot 15. The outer surface of the nozzle 1 is fixedly connected to a first support plate 7 and a second support plate 8. A threaded rod 6 is rotatably mounted on the first support plate 7. A threaded plate 5 is threadedly connected to the outer surface of the threaded rod 6. The threaded plate 5 is fixedly connected to the adjusting plate 3. The adjusting plate 3 is moved by the threaded plate 5 on the threaded rod 6, so that the four adjusting plates 3 can move closer to each other or separate from each other. A rotating shaft 9 is rotatably mounted on the second support plate 8. Both the rotating shaft 9 and the outer surface of the threaded rod 6 are fixedly connected to bevel gears 10. The two bevel gears 10 mesh with each other and are used for transmission to improve stability.

[0030] A toothed ring 12 is rotatably mounted on the outer surface of nozzle 1. A spur gear 11 is fixedly connected to the outer surface of multiple rotating shafts 9. The spur gear 11 meshes with the toothed ring 12. A motor 13 is mounted on the back of the second support plate 8. The output end of the motor 13 is fixedly connected to one end of one of the rotating shafts 9. The motor 13 drives one spur gear 11 to rotate. The spur gear 11 drives the toothed ring 12 to rotate. The toothed ring 12 drives the other three spur gears 11 to rotate, thereby causing the bevel gear 10 fixed on the rotating shaft 9 to rotate. The rotation of the bevel gear 10 drives the bevel gear 10 fixed on the threaded rod 6 to rotate, causing the threaded plate 5 threadedly connected to the threaded rod 6 to move on the threaded rod 6.

[0031] The first support plate 7 and the second support plate 8 are welded to the outer surface of the nozzle 1.

[0032] The threaded plate 5 and the adjusting plate 3 are connected by bolts or welding.

[0033] The movable groove 17 is provided with a track for moving the sealing plate 4.

[0034] The outer surface of the nozzle 1 is fitted with an outer cover 14, which is used to cover the bevel gear 10 and the spur gear 11 inside.

[0035] The two adjacent sealing plates 4 are welded together.

[0036] The motor 13 is mounted on the second support plate 8 by bolts.

[0037] Working Principle: An adjustable cavitation jet nozzle. When adjusting the nozzle 1's diameter, simply start the motor 13. The motor 13 drives one of the rotating shafts 9 and the spur gear 11 to rotate. The rotation of the spur gear 11 drives the gear ring 12 to rotate. The rotation of the gear ring 12 simultaneously drives multiple bevel gears 10 and threaded rods 6 to rotate. The rotation of the four threaded rods 6 drives four threaded plates 5 to move inward or outward along the threaded rods 6. The movement of the threaded plates 5 drives the adjusting plate 3 and the sealing plate 4 to move accordingly. When the adjusting plate 3 moves towards the center position of the adjusting hole 18, two adjacent sealing plates 4 are welded together to form an L-shaped sealing plate. The L-shaped sealing plate also changes position under the pressure of the adjusting plate 3, allowing the L-shaped sealing plate to slide within the adjusting plate 3, thereby blocking the gap between two adjacent adjusting plates, thus achieving a diameter seal and ensuring the nozzle's spraying effect. When the adjusting plate 3 moves away from the center position of the adjusting hole 18, the L-shaped sealing plate will also move with the adjusting plate 3 to reset, thereby achieving the purpose of adjusting the internal diameter of the nozzle 1.

[0038] The above embodiments merely illustrate implementation methods of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. An adjustable cavitation jet nozzle, comprising a nozzle (1) and an outer casing (14), characterized in that: The nozzle (1) is fixedly connected to an inner circular plate (2). A rectangular adjustment hole (18) is opened in the middle of the inner circular plate (2). Four adjustment plates (3) are slidably arranged inside the inner circular plate (2). The four adjustment plates (3) are arranged in a circular array. Each of the four adjustment plates (3) is provided with a movable groove (17). Two sealing plates (4) are slidably arranged in the movable groove (17). The two sealing plates (4) that are not in the same adjustment plate (3) and are adjacent are fixedly connected. The inner circular plate (2) is provided with a first slot (15) for the adjustment plate (3) and the sealing plate (4) to slide. The nozzle (1) has a second slot (16) on its periphery corresponding to the first slot (15). The outer surface of the nozzle (1) is fixedly connected to a first support plate (7) and a second support plate (8). A threaded rod (6) is rotatably mounted on the first support plate (7). A threaded plate (5) is threadedly connected to the outer surface of the threaded rod (6). The threaded plate (5) is fixedly connected to the adjusting plate (3). A rotating shaft (9) is rotatably mounted on the second support plate (8). Both the rotating shaft (9) and the outer surface of the threaded rod (6) are fixedly connected to bevel gears (10). The two bevel gears (10) mesh with each other. A gear ring (12) is rotatably mounted on the outer surface of the nozzle (1), and a spur gear (11) is fixedly connected to the outer surface of a plurality of rotating shafts (9). The spur gear (11) meshes with the gear ring (12). A motor (13) is mounted on the back of the second support plate (8), and the output end of the motor (13) is fixedly connected to one end of one of the rotating shafts (9).

2. The adjustable cavitation jet nozzle according to claim 1, characterized in that: The first support plate (7) and the second support plate (8) are welded to the outer surface of the nozzle (1).

3. The adjustable cavitation jet nozzle according to claim 1, characterized in that: The threaded plate (5) and the adjusting plate (3) are connected by bolts or welding.

4. The adjustable cavitation jet nozzle according to claim 1, characterized in that: The movable groove (17) is provided with a track for moving the sealing plate (4).

5. The adjustable cavitation jet nozzle according to claim 1, characterized in that: The outer surface of the nozzle (1) is fitted with an outer cover (14), which is used to cover the bevel gear (10) and the spur gear (11) inside.

6. The adjustable cavitation jet nozzle according to claim 1, characterized in that: The two adjacent sealing plates (4) are welded together.

7. The adjustable cavitation jet nozzle according to claim 1, characterized in that: The motor (13) is mounted on the second support plate (8) by bolts.

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