Adjustable cavitation jet nozzle

Abstract

The invention relates to the technical field of nozzles, and particularly discloses an adjustable cavitation jet nozzle which comprises a nozzle body and an outer cover, an inner circular plate is fixedly connected to the interior of the nozzle body, a rectangular adjusting hole is formed in the middle of the inner circular plate, four adjusting plates are arranged in the inner circular plate in a sliding mode, and the four adjusting plates are distributed in a circumferential array mode; movable grooves are formed in the four adjusting plates, two sealing plates are arranged in each movable groove in a sliding mode, every two adjacent sealing plates which are not located in the same adjusting plate are fixedly connected, and first notches allowing the adjusting plates and the sealing plates to slide are formed in the inner circular plate; the self-caliber of the cavitation nozzle can be adjusted, the cavitation nozzle can adapt to different scenes by changing the self-caliber of the cavitation nozzle and the style of an internal flow channel, and compared with the mode that nozzles of different models are installed in different scenes, time can be saved.

Description

Technical Field

[0001] The invention relates to the technical field of nozzles, in particular to an adjustable cavitation jet nozzle. Background Art

[0002] Cavitation is the explosive growth of cavitation bubbles caused by the evaporation of liquid due to local low pressure in the liquid. The effect of the jet is enhanced by the strong impact force generated by the rupture of the cavitation bubble. The jet formed by the nozzle induces cavitation bubbles filled with water vapor inside the liquid, and uses the high-pressure shock wave and energy generated when the cavitation bubble collapses to generate extremely high impact pressure and stress concentration in the local area of ​​the object surface, causing the surface of the object to be rapidly destroyed, thereby causing plastic deformation, cavitation strengthening, cavitation erosion and other phenomena on the surface of the object. The nozzle is a key component for generating cavitation jets, and its structural form has a great influence on the jet dynamics and internal flow field.

[0003] According to a cavitation jet test device and a nozzle with adjustable caliber with the authorized patent number CN116020671A, the middle part of the nozzle body has a through channel, and a plurality of sealing adjustment blocks distributed along the circumference are arranged in 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. The linkage gear is rotatably mounted on the nozzle body. The two sides of the adjustment rod are respectively provided with teeth meshing with the linkage gears on both sides, and the linkage gears of two adjacent adjustment units are meshed. Through the design of multiple adjustment units, nozzle shapes of different diameters and styles can be adjusted without frequent changes of nozzle styles, ensuring that the flow channel is special while meeting the different flow channel sizes.

[0004] Although the above device can adjust the diameter of the nozzle, the multiple sealing adjustment blocks in the above device cannot achieve sealing, which will affect the injection effect of the nozzle. Moreover, its adjustment range is severely limited because the multiple sealing adjustment blocks are prone to collision when moving inward at the same time. For this purpose, an adjustable cavitation jet nozzle is provided. Summary of the invention

[0005] The purpose of the present invention is to provide an adjustable cavitation jet nozzle to address the defects of the prior art and solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an adjustable cavitation jet nozzle, comprising a nozzle and an outer cover, wherein an inner circular plate is fixedly connected to the inside of 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 circular array, movable grooves are provided inside the four adjustment plates, two sealing plates are slidably arranged in the movable grooves, two sealing plates that are not in the same adjustment plate and are adjacent to each other are fixedly connected, and a first notch for sliding the adjustment plate and the sealing plate is provided inside the inner circular plate;

[0007] A second notch corresponding to the first notch is provided on the circumferential side of the nozzle, the first support plate and the 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 adjustment plate, a rotating shaft is rotatably mounted on the second support plate, the rotating shaft and the outer surfaces of the threaded rod are both fixedly connected to bevel gears, and the two bevel gears are meshed;

[0008] A gear ring is rotatably mounted on the outer surface of the nozzle, and circular gears are fixedly connected to the outer surfaces of multiple rotating shafts. The circular gears are meshed with the gear rings. 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 technical solution of the present invention, the first support plate and the second support plate are connected to the outer surface of the nozzle by welding.

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

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

[0012] As a preferred technical solution of the present invention, an outer cover is clamped on the outer surface of the nozzle, and the outer cover is used to cover the bevel gear and the circular gear inside.

[0013] As a preferred technical solution of the present invention, two adjacent sealing plates are connected by welding.

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

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention can adjust the caliber of the cavitation nozzle itself, and can adapt to different scenes by changing the caliber of the cavitation nozzle itself and the internal flow channel pattern. Compared with installing nozzles of different models in different scenes, it can save time.

[0017] The present invention can drive the four adjustment plates to move inward or outward at the same time by starting the motor, and then cooperate with the inner circular plate to adjust the nozzle's own diameter, so as to adapt to different scenes. Compared with installing different types of nozzles in different scenes, it can save time.

[0018] The present invention can block the gap between two adjacent adjustment plates by arranging a sealing plate, thereby achieving caliber sealing and further ensuring the spraying effect of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the appearance structure of the present invention;

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

[0021] Figure 3 A partially cutaway stereoscopic view of a nozzle of the present invention;

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

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

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

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

[0026] In the figure: 1. nozzle; 2. inner circular plate; 3. adjustment 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 notch; 16. second notch; 17. movable slot; 18. adjustment hole. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with 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 making a clearer and more definite definition of the protection scope of the present invention.

[0028] Example: See Figure 1-7 The present invention provides a technical solution: an adjustable cavitation jet nozzle, comprising a nozzle 1 and an outer cover 14, an inner circular plate 2 is fixedly connected to the inside of 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, and the size of the adjustment hole 18 is changed by sliding the four adjustment plates 3 to adjust the inner diameter of the nozzle 1, the four adjustment plates 3 are distributed in a circular array, and the insides of the four adjustment plates 3 are all provided with movable grooves 17, and two sealing plates 4 are slidably arranged in the movable grooves 17, and two adjacent sealing plates 4 that are not in the same adjustment plate 3 are fixedly connected, and the gap between the adjustment plates 3 is blocked by the adjacent sealing plates 4, so that the caliber can be sealed, and then the spraying effect of the nozzle can be ensured, and the first notch 15 for sliding the adjustment plate 3 and the sealing plate 4 is opened inside the inner circular plate 2;

[0029] A second notch 16 corresponding to the first notch 15 is provided on the circumferential side of the nozzle 1. A first support plate 7 and a second support plate 8 are fixedly connected to the outer surface of the nozzle 1. 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 adjustment plate 3. The threaded plate 5 is moved on the threaded rod 6 to drive the adjustment plate 3 to move, so that the four adjustment plates 3 are brought closer to or separated from each other. A rotating shaft 9 is rotatably mounted on the second support plate 8. The rotating shaft 9 and the outer surfaces of the threaded rod 6 are fixedly connected with a bevel gear 10. The two bevel gears 10 are meshed with each other, and the transmission is performed through the meshing of the bevel gears 10 to improve stability.

[0030] A gear ring 12 is rotatably installed on the outer surface of the nozzle 1, and circular gears 11 are fixedly connected to the outer surfaces of multiple rotating shafts 9. The circular gears 11 are meshed with the gear rings 12. A motor 13 is installed 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. The motor 13 is used to drive a circular gear 11 to rotate, and the circular gear 11 drives the gear ring 12 to rotate. The gear ring 12 drives the other three circular gears 11 to rotate, thereby rotating the bevel gear 10 fixed on the rotating shaft 9. The rotation of the bevel gear 10 drives the bevel gear 10 fixed on the threaded rod 6 to rotate, so that the threaded plate 5 threadedly connected to the threaded rod 6 moves on the threaded rod 6.

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

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

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

[0034] An outer cover 14 is clamped on the outer surface of the nozzle 1 , and the outer cover 14 is used to cover the bevel gear 10 and the circular gear 11 inside.

[0035] Two adjacent sealing plates 4 are connected by welding.

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

[0037] Working principle: An adjustable cavitation jet nozzle. When adjusting the caliber of the nozzle 1, it is only necessary to start the motor 13. The motor 13 can drive one of the rotating shafts 9 and the circular gear 11 to rotate. The rotation of the circular gear 11 can drive the gear ring 12 to rotate. The rotation of the gear ring 12 can simultaneously drive multiple bevel gears 10 and the threaded rod 6 to rotate. The rotation of the four threaded rods 6 can drive the four threaded plates 5 to move inward or outward along the threaded rods 6. The movement of the threaded plate 5 can drive the adjustment plate 3 and the sealing plate 4 to move accordingly. When the adjustment plate 3 moves toward the center position of the adjustment hole 18, two adjacent sealing plates 4 are welded together to form an L-shaped sealing plate. The L-shaped sealing plate will also change its position under the extrusion of the adjustment plate 3, allowing the L-shaped sealing plate to slide in the adjustment plate 3, thereby blocking the gap between the two adjacent adjustment plates, thereby achieving the sealing of the caliber, and then ensuring the injection effect of the nozzle. When the adjustment plate 3 is away from the center position of the adjustment hole 18, the L-shaped sealing plate will also move with the adjustment plate 3 to reset, thereby achieving the purpose of adjusting the caliber inside the nozzle 1.

[0038] The above embodiments only express the implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. An adjustable cavitation jet nozzle, comprising a nozzle (1) and an outer cover (14), characterized in that: An inner circular plate (2) is fixedly connected to the inside of the nozzle (1), a rectangular adjustment hole (18) is provided 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, movable grooves (17) are provided inside the four adjustment plates (3), two sealing plates (4) are slidably arranged inside the movable grooves (17), two adjacent sealing plates (4) that are not in the same adjustment plate (3) are fixedly connected, and a first notch (15) is provided inside the inner circular plate (2) for sliding the adjustment plate (3) and the sealing plate (4); A second notch (16) corresponding to the first notch (15) is provided on the circumferential side of the nozzle (1); a first support plate (7) and a second support plate (8) are fixedly connected to the outer surface of the nozzle (1); 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 adjustment plate (3); a rotating shaft (9) is rotatably mounted on the second support plate (8); bevel gears (10) are fixedly connected to the outer surfaces of the rotating shaft (9) and the threaded rod (6); and the two bevel gears (10) are meshed with each other; A gear ring (12) is rotatably mounted on the outer surface of the nozzle (1), and circular gears (11) are fixedly connected to the outer surfaces of the plurality of rotating shafts (9), the circular gears (11) meshing with the gear ring (12), and 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 connected to the outer surface of the nozzle (1) by welding.

3. The adjustable cavitation jet nozzle according to claim 1, characterized in that: The threaded plate (5) is connected to the adjustment plate (3) 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: An outer cover (14) is clamped on the outer surface of the nozzle (1), and the outer cover (14) is used to cover the bevel gear (10) and the circular gear (11) inside.

6. The adjustable cavitation jet nozzle according to claim 1, characterized in that: Two adjacent sealing plates (4) are connected by welding.

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 means of bolts.

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