Multi-working-condition adjustable cavitation nozzle experiment table

Abstract

The invention discloses a multi-working-condition adjustable cavitation nozzle experiment table, and belongs to the technical field of cavitation cleaning. A multi-working-condition adjustable cavitation nozzle experiment table comprises an experiment water tank and further comprises a displacement mechanism arranged on the upper side of the experiment water tank; the spray head part is arranged on the side wall of the experimental water tank and is used for cavitation cleaning of the target object on the displacement mechanism; the position of the target object is adjusted through the modularized displacement mechanism, and the distance from the nozzle to the target disc or the scouring point of the nozzle to the target disc is selected; and the type or size of the nozzle can be changed on the optimal cleaning target distance to clean a target object, the actual jet cleaning process is simulated, the problems that traditional equipment is poor in adaptability, long in mechanical reconstruction time and low in data comparability are solved, and the overall efficiency of an experiment and the accuracy of a result are improved.

Description

Technical Field

[0001] The invention relates to the technical field of cavitation cleaning, in particular to a multi-working-condition adjustable cavitation nozzle test bench. Background Art

[0002] Cavitation cleaning is based on high-pressure water flowing through special nozzles to create a cavitation effect (cavitation bubbles are formed due to local low pressure in the liquid, and microjets are released at high temperature and high pressure at the moment of collapse), using the energy of collapse to remove dirt. Cavitation dynamics (bubble generation and collapse) directly affect cleaning efficiency and damage risk. Experiments are needed to reveal the working principles and guide parameter optimization. Cavitation collapse can also damage the surface of equipment, requiring research on critical conditions (such as pressure thresholds and material corrosion resistance) to balance cleaning effectiveness and equipment life. Experiments are also needed to verify the stability of the technology and ensure reliability in practical applications. Research on cavitation jet technology is not only the key to breaking through the bottleneck of traditional cleaning, but also provides basic support for emerging fields such as underwater energy and medicine.

[0003] Among the existing jet cleaning technology jet cleaning experimental equipment, some jet cleaning experimental equipment are designed for water jet cutting devices, with the purpose of improving the water jet cutting accuracy and efficiency, and cannot be applied to cavitation cleaning experiments; some jet cleaning experimental equipment are designed for high-pressure water jet experimental devices, which optimize the shortcomings of ordinary water jet experimental devices that only focus on the performance of the nozzle but do not pay attention to the various working parameters of the high-pressure water jet (such as cleaning target distance parameters); due to its structural limitations, some jet cleaning experimental equipment cannot change the relative position of the nozzle relative to the target part to be cleaned in space, so that the cleaning target distance of the nozzle relative to the target part to be cleaned is fixed, and it does not have the experimental ability to optimize the cleaning target distance. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a multi-working-condition adjustable cavitation nozzle test bench.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A multi-working-condition adjustable cavitation nozzle test bench includes a test water tank and:

[0007] A displacement mechanism, which is arranged on the upper side of the experimental water tank and is used to adjust the position of the target object in the experimental water tank. The displacement mechanism includes a first displacement component for longitudinally adjusting the position, a second displacement component for transversely adjusting the position, and a third displacement component for vertically adjusting the position and for carrying the target object;

[0008] A nozzle head, which is arranged on the side wall of the experimental water tank and is used for cavitation cleaning of the target object on the displacement mechanism;

[0009] Among them, the nozzle head includes a nozzle seat connected to the experimental water tank through a support rod, a number of nozzle bodies evenly arranged in a circle on the nozzle seat, a water injection pipe connected to the nozzle body, and a nozzle replacement structure for adjusting the connection between different nozzle bodies and the water injection pipe.

[0010] Preferably, the experimental water tank includes a main frame and surrounding side panels arranged on the main frame, and the main frame and the surrounding side panels are combined to form a water tank for performing cavitation cleaning experiments on target objects.

[0011] Preferably, the nozzle replacement structure includes a support plate fixed to the side wall of the experimental water tank, a rotating rod rotatably connected to the support plate, a first motor and a main bevel gear respectively arranged at both ends of the rotating rod, and a secondary bevel gear arranged on the nozzle seat and meshing with the main bevel gear.

[0012] Preferably, a waterproof shell is fixedly provided on the outer side of the support rod, and a sealed bearing is provided between the waterproof shell and the nozzle seat.

[0013] Preferably, the water injection pipe includes a fixed pipe fixedly connected to the inner wall of the experimental water tank and a movable pipe slidably connected to the fixed pipe, the end of the movable pipe away from the fixed pipe is inserted into the water inlet end of the nozzle body, and the end face of the water outlet end of the movable pipe is provided with a sealing ring, and the end of the fixed pipe away from the movable pipe passes through the experimental water tank and is connected to a water injection device.

[0014] Preferably, a torsion spring is provided between the nozzle seat and the secondary bevel gear, a pushing inclined rod corresponding to a plurality of nozzle bodies is fixed on the secondary bevel gear, a force block that resists the movement of the pushing inclined rod is fixed on the movable tube, and an elastic element is provided between the force block and the fixed tube.

[0015] Preferably, a support plate rotatably connected to the rotating rod is fixedly provided on the inner wall of the experimental water tank, a plurality of angle lines are evenly arranged on the support plate in a circumference, and a pointer that matches the angle line is provided on the rotating rod.

[0016] Preferably, the first displacement assembly includes a first U-shaped plate fixedly mounted on the top of the main frame, a first screw rotatably connected to the first U-shaped plate, and a first sleeve threadedly connected to the first screw; the second displacement assembly includes a second U-shaped plate fixedly connected to the first sleeve, a second screw rotatably connected to the second U-shaped plate, and a second sleeve threadedly connected to the second screw; the third displacement assembly includes a third U-shaped plate fixedly connected to the second sleeve, a third screw rotatably connected to the third U-shaped plate, a third sleeve threadedly connected to the third screw, and a carrier plate fixedly connected to the third sleeve.

[0017] Preferably, the first sleeve is slidably connected to the first U-shaped plate, the second sleeve is slidably connected to the second U-shaped plate, and the third sleeve is slidably connected to the third U-shaped plate. Auxiliary wheels are provided on the first sleeve, the second sleeve and the third sleeve, and track grooves matching the auxiliary wheels are provided on the first U-shaped plate, the second U-shaped plate and the third U-shaped plate.

[0018] Preferably, the loading plate is configured to be U-shaped, both sides of the loading plate are threadedly connected with a fourth screw rod, and a clamping plate is provided at the end of the fourth screw rod.

[0019] Compared with the prior art, the present invention provides a multi-condition adjustable cavitation nozzle test bench with the following beneficial effects:

[0020] 1. This multi-condition adjustable cavitation nozzle test bench adjusts the position of the target object through a modular displacement mechanism, accurately selects the distance from the nozzle to the target disk or the flushing point of the nozzle on the target disk, and can quickly change the nozzle type or size at the optimal cleaning target distance to perform cleaning operations on the target object, simulating the actual jet cleaning process, solving the problems of poor adaptability of traditional equipment, long mechanical reconstruction time, and low data comparability, thereby improving the overall efficiency of the experiment and the accuracy of the results.

[0021] 2. This multi-working-condition adjustable cavitation nozzle test bench elastically connects the water outlet end of the movable tube with the water inlet end of the nozzle body. When the nozzle holder rotates to replace the nozzle body, the sealing ring at the end of the movable tube will not be damaged by friction due to rotation, thereby ensuring its service life and sealing performance.

[0022] 3. This multi-working-condition adjustable cavitation nozzle test bench can protect the water outlet end of the movable tube, the water inlet end of the nozzle body, and the gear transmission structure by setting a waterproof shell on the outside of the support rod, preventing waste debris and impurities generated by the experiment in the water tank from entering and causing blockage of the nozzle or gear jamming, thereby ensuring the normal replacement of the nozzle structure.

[0023] 4. The multi-condition adjustable cavitation nozzle test bench can clamp and fix the target object by setting a clamping plate on the carrier plate, avoiding the target object from shaking during the cavitation cleaning experiment, thereby ensuring the accuracy of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 Schematic diagram of the structure of the displacement mechanism of the present invention;

[0026] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0027] Figure 4 Schematic diagram of the external structure of the second sleeve of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the nozzle replacement structure of the present invention;

[0029] Figure 6 Schematic diagram of the cross-sectional structure of the waterproof shell of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the movable tube of the present invention when it is separated from the nozzle body.

[0031] Figure: 1. Experimental water tank; 101. Main frame; 102. Enclosure side panels; 2. First displacement assembly; 201. First U-shaped plate; 202. First screw; 203. First sleeve; 3. Second displacement assembly; 301. Second U-shaped plate; 302. Second screw; 303. Second sleeve; 4. Third displacement assembly; 401. Third U-shaped plate; 402. Third screw; 403. Third sleeve; 404. Loading plate; 5. Sprinkler head; 501. Support rod; 502. Sprinkler seat; 5021 , secondary bevel gear; 503, nozzle body; 504, water injection pipe; 5041, fixed pipe; 5042, movable pipe; 5043, sealing ring; 6, support plate; 601, rotating rod; 6011, first motor; 6012, main bevel gear; 6013, pointer; 602, support plate; 6021, angle line; 7, waterproof shell; 8, torsion spring; 9, push diagonal rod; 901, force block; 902, elastic element; 10, auxiliary wheel; 11, track groove; 12, fourth screw; 121, splint. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] like Figure 1 、 Figure 2 and Figure 5 As shown, this embodiment proposes a multi-working-condition adjustable cavitation nozzle test bench, comprising an experimental water tank 1, and also comprising: a displacement mechanism and a nozzle head 5, wherein the displacement mechanism is arranged on the upper side of the experimental water tank 1, and is used to adjust the position of the target object in the experimental water tank 1, and the displacement mechanism comprises a first displacement component 2 for longitudinally adjusting the position, a second displacement component 3 for lateral adjustment of the position, and a third displacement component 4 for vertically adjusting the position and for carrying the target object, and the nozzle head 5 is arranged on the side wall of the experimental water tank 1, and is used for cavitation cleaning of the target object on the displacement mechanism; wherein the nozzle head 5 comprises a nozzle seat 502 connected to the experimental water tank 1 through a support rod 501, a plurality of nozzle bodies 503 uniformly arranged on the nozzle seat 502 in a circumferential manner, a water injection pipe 504 connected to the nozzle body 503, and a nozzle replacement structure for adjusting the connection between different nozzle bodies 503 and the water injection pipe 504;

[0036] The present application adjusts the position of the target object through a modular displacement mechanism, selects the distance from the nozzle body 503 to the target disk or the flushing point of the nozzle on the target disk, and the target disk is the target object; and can quickly change the type or size of the nozzle body 503 at the optimal cleaning target distance to perform cleaning operations on the target object, simulating the actual jet cleaning process, solving the problems of poor adaptability of traditional equipment, long mechanical reconstruction time, and low data comparability, thereby improving the overall efficiency of the experiment and the accuracy of the results.

[0037] like Figure 1 、 Figure 2 and Figure 5 As shown, as a preferred embodiment, on the basis of the above method, further, the experimental water tank 1 includes a main frame 101 and a protective side panel 102 arranged on the main frame 101. The main frame 101 cooperates with the protective side panel 102 to form a water tank for cavitation cleaning experiments on target objects; the displacement mechanism is arranged on the top of the main frame 101, and the nozzle head 5 is arranged on the protective side panel 102 on one side. When conducting the experiment, the water tank should be filled with water to meet the requirements of the underwater experiment.

[0038] like Figure 1 、 Figure 5、 Figure 6 and Figure 7 As shown, as a preferred embodiment, on the basis of the above method, further, the nozzle replacement structure includes a support plate 6 fixedly mounted on the side wall of the experimental water tank 1, a rotating rod 601 rotatably connected to the support plate 6, a first motor 6011 and a main bevel gear 6012 respectively arranged at both ends of the rotating rod 601, and a secondary bevel gear 5021 arranged on the nozzle seat 502 and meshed with the main bevel gear 6012, the first motor 6011 is fixed on the support plate 6; when a different nozzle body 503 needs to be replaced, by starting the first motor 6011, the first motor 6011 drives the rotating rod 601 and the main bevel gear 6012 at the bottom of the rotating rod 601 to rotate, the main bevel gear 6012 is meshed with the secondary bevel gear 5021 for transmission, and the secondary bevel gear 5021 drives the nozzle seat 502 to rotate, so that the water inlet end of the different nozzle bodies 503 on the nozzle seat 502 is matched and aligned with the water outlet end of the water injection pipe 504.

[0039] like Figure 1 、 Figure 3 and Figure 6 As shown, as a preferred embodiment, on the basis of the above-mentioned method, a waterproof shell 7 is further fixedly provided on the outside of the support rod 501, and a sealed bearing is provided between the waterproof shell 7 and the nozzle seat 502; the waterproof shell 7 can protect the water outlet end of the water injection pipe 504, the water inlet end of the nozzle body 503 and the gear transmission structure, to prevent the entry of waste debris and impurities generated by the experiment in the water tank, resulting in blockage of the nozzle body 503 or gear jamming, thereby ensuring the normal operation of the nozzle replacement structure.

[0040] like Figure 5 、 Figure 6 and Figure 7 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the water injection pipe 504 includes a fixed pipe 5041 fixedly connected to the inner wall of the experimental water tank 1 and a movable pipe 5042 slidably connected to the fixed pipe 5041, the end of the movable pipe 5042 away from the fixed pipe 5041 is plugged into the water inlet end of the nozzle body 503, and the water outlet end face of the movable pipe 5042 is provided with a sealing ring 5043, the end of the fixed pipe 5041 away from the movable pipe 5042 passes through the experimental water tank 1 and is connected to a water injection device, which is an existing device, such as a faucet or any other device that can input water into the water injection pipe 504, and will not be described in detail here;

[0041] Furthermore, a torsion spring 8 is provided between the nozzle seat 502 and the secondary bevel gear 5021. A push rod 9 corresponding to each of the nozzle bodies 503 is fixed on the secondary bevel gear 5021. A force block 901 that moves against the push rod 9 is fixed on the movable tube 5042. An elastic element 902 is provided between the force block 901 and the fixed tube 5041.

[0042] Specifically, when the secondary bevel gear 5021 rotates, since the water outlet end of the movable tube 5042 is still plugged into the water inlet end of the nozzle body 503, the secondary bevel gear 5021 rotates relative to the nozzle seat 502, and the torsion spring 8 is twisted. As the secondary bevel gear 5021 continues to rotate, the pushing inclined rod 9 on the secondary bevel gear 5021 will abut against the force block 901, so that the force block 901 drives the movable tube 5042 to retract into the fixed tube 5041. After the movable tube 5042 is separated from the nozzle body 503, the nozzle seat 502 is reset and rotated under the action of the torsion spring 8. After the rotating rod 601 rotates for a fixed period, the nozzle body 503 to be replaced and the movable tube 5042 are reconnected. After the ends of 042 are aligned, the inclined rod 9 is pushed to no longer abut against the force block 901, and the movable tube 5042 is reset and moved under the push of the elastic element 902, so that the movable tube 5042 is re-inserted into the adjusted nozzle body 503, so that when the nozzle seat 502 is rotated to replace the nozzle body 503, the sealing ring 5043 at the end of the movable tube 5042 is not damaged by friction due to rotation, thereby ensuring its service life and sealing performance; it should be noted that the outlet end of the movable tube 5042 should be set to a conical head to facilitate the quick connection of the movable tube 5042 and the nozzle body 503, thereby reducing the probability of failure to be connected to the nozzle body 503 due to partial alignment errors.

[0043] like Figure 5 As shown, as a preferred embodiment, on the basis of the above method, further, the inner wall of the experimental water tank 1 is fixedly provided with a support plate 602 rotatably connected to the rotating rod 601, and a plurality of angle lines 6021 are evenly arranged on the support plate 602 in a circular shape, and a pointer 6013 matching the angle line 6021 is provided on the rotating rod 601; when the staff drives the rotating rod 601 to rotate, the pointer 6013 on the rotating rod 601 points to the corresponding angle line 6021, thereby facilitating the precise replacement of the position of the nozzle body 503.

[0044] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, as a preferred embodiment, on the basis of the above manner, further, the first displacement assembly 2 includes a first U-shaped plate 201 fixedly provided on the top of the main frame 101, a first screw 202 rotatably connected to the first U-shaped plate 201, and a first sleeve 203 threadedly connected to the first screw 202; the second displacement assembly 3 includes a second U-shaped plate 301 fixedly connected to the first sleeve 203, a second screw 302 rotatably connected to the second U-shaped plate 301, and a second sleeve 303 threadedly connected to the second screw 302; the third displacement assembly 4 includes a third U-shaped plate 401 fixedly connected to the second sleeve 303, a third screw 402 rotatably connected to the third U-shaped plate 401, a third sleeve 403 threadedly connected to the third screw 402, and a carrier plate 404 fixedly connected to the third sleeve 403;

[0045] Specifically, when adjusting the distance between the target object on the carrier plate 404 and the nozzle head 5, each U-shaped plate is fixedly provided with a drive motor for driving its own screw to rotate. The first screw 202 can be driven to rotate, so that the first sleeve 203 drives the second displacement component 3 to move axially along the first screw 202. After the longitudinal position is adjusted, the second screw 302 is driven to rotate, so that the second sleeve 303 drives the third displacement component 4 to move axially along the second screw 302. After the lateral position is adjusted, the third screw 402 is driven to rotate, so that the third sleeve 403 drives the carrier plate 404 to move axially along the third screw 402, thereby realizing modular adjustment of the target object position and making the target object move in multiple dimensions to achieve the purpose of changing the distance between the target object and the nozzle.

[0046] like Figure 2 、 Figure 3 and Figure 4 As shown, as a preferred embodiment, on the basis of the above method, further, the first sleeve 203 is slidably connected to the first U-shaped plate 201, the second sleeve 303 is slidably connected to the second U-shaped plate 301, and the third sleeve 403 is slidably connected to the third U-shaped plate 401. Auxiliary wheels 10 are provided on the first sleeve 203, the second sleeve 303 and the third sleeve 403, and track grooves 11 that cooperate with the auxiliary wheels 10 are provided on the first U-shaped plate 201, the second U-shaped plate 301 and the third U-shaped plate 401; specifically, when each sleeve moves axially along the screw connected to its own thread, the sleeve can slide in the track groove 11 of the U-shaped plate through the auxiliary wheel 10, thereby improving the stability of the sleeve movement.

[0047] like Figure 2As shown, as a preferred embodiment, on the basis of the above method, further, the carrier plate 404 is set to be U-shaped, and the fourth screw 12 is threadedly connected to both sides of the carrier plate 404, and the end of the fourth screw 12 is provided with a clamping plate 121; specifically, by rotating the fourth screw 12, the fourth screw 12 is displaced relative to the carrier plate 404, and the movement of the fourth screw 12 drives the clamping plate 121 to move, which can clamp and fix the target object, avoid shaking of the target object during the cavitation cleaning experiment, thereby ensuring the accuracy of the experimental results.

[0048] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A multi-condition adjustable cavitation nozzle test bench, comprising a test water tank (1), characterized in that: Also includes: A displacement mechanism, the displacement mechanism being arranged on the upper side of the experimental water tank (1) and being used to adjust the position of the target object in the experimental water tank (1), the displacement mechanism comprising a first displacement assembly (2) for longitudinally adjusting the position, a second displacement assembly (3) for transversely adjusting the position, and a third displacement assembly (4) for vertically adjusting the position and for carrying the target object; A nozzle head (5), the nozzle head (5) being arranged on the side wall of the experimental water tank (1) and used for cavitation cleaning of the target object on the displacement mechanism; The nozzle head (5) comprises a nozzle seat (502) connected to the experimental water tank (1) via a support rod (501), a plurality of nozzle bodies (503) uniformly arranged on the nozzle seat (502) in a circumferential manner, a water injection pipe (504) connected to the nozzle body (503), and a nozzle replacement structure for adjusting the connection between different nozzle bodies (503) and the water injection pipe (504).

2. The multi-condition adjustable cavitation nozzle test bench according to claim 1, characterized in that: The experimental water tank (1) comprises a main frame (101) and a surrounding side plate (102) arranged on the main frame (101); the main frame (101) cooperates with the surrounding side plate (102) to form a water tank for performing a cavitation cleaning experiment on a target object.

3. The multi-condition adjustable cavitation nozzle test bench according to claim 1, characterized in that: The nozzle replacement structure comprises a support plate (6) fixedly mounted on the side wall of the experimental water tank (1), a rotating rod (601) rotatably connected to the support plate (6), a first motor (6011) and a main bevel gear (6012) respectively arranged at both ends of the rotating rod (601), and a secondary bevel gear (5021) arranged on the nozzle base (502) and meshing with the main bevel gear (6012).

4. The multi-condition adjustable cavitation nozzle test bench according to claim 3, characterized in that: A waterproof shell (7) is fixedly provided on the outside of the support rod (501), and a sealed bearing is provided between the waterproof shell (7) and the nozzle seat (502).

5. The multi-condition adjustable cavitation nozzle test bench according to claim 4, characterized in that: The water injection pipe (504) comprises a fixed pipe (5041) fixedly connected to the inner wall of the experimental water tank (1) and a movable pipe (5042) slidably connected to the fixed pipe (5041); the end of the movable pipe (5042) away from the fixed pipe (5041) is plugged into the water inlet end of the nozzle body (503); a sealing ring (5043) is provided on the water outlet end face of the movable pipe (5042); and the end of the fixed pipe (5041) away from the movable pipe (5042) passes through the experimental water tank (1) and is connected to a water injection device.

6. The multi-condition adjustable cavitation nozzle test bench according to claim 5, characterized in that: A torsion spring (8) is provided between the nozzle seat (502) and the secondary bevel gear (5021); a push inclined rod (9) corresponding one-to-one to a plurality of nozzle bodies (503) is fixed on the secondary bevel gear (5021); a force block (901) that is movable against the push inclined rod (9) is fixed on the movable tube (5042); and an elastic element (902) is provided between the force block (901) and the fixed tube (5041).

7. The multi-condition adjustable cavitation nozzle test bench according to claim 6, characterized in that: The inner wall of the experimental water tank (1) is fixedly provided with a support plate (602) rotatably connected to the rotating rod (601), and a plurality of angle lines (6021) are evenly arranged on the support plate (602) in a circular pattern. The rotating rod (601) is provided with a pointer (6013) that matches the angle line (6021).

8. The multi-mode adjustable cavitation nozzle test bench according to claim 1, characterized in that: The first displacement assembly (2) comprises a first U-shaped plate (201) fixedly mounted on the top of the main frame (101), a first screw (202) rotatably connected to the first U-shaped plate (201), and a first sleeve (203) threadedly connected to the first screw (202); the second displacement assembly (3) comprises a second U-shaped plate (301) fixedly connected to the first sleeve (203), a second screw (302) rotatably connected to the second U-shaped plate (301), and a second sleeve (303) threadedly connected to the second screw (302); and the third displacement assembly (4) comprises a third U-shaped plate (401) fixedly connected to the second sleeve (303), a third screw (402) rotatably connected to the third U-shaped plate (401), a third sleeve (403) threadedly connected to the third screw (402), and a carrier plate (404) fixedly connected to the third sleeve (403).

9. The multi-mode adjustable cavitation nozzle test bench according to claim 8, characterized in that: The first sleeve (203) is slidably connected to the first U-shaped plate (201), the second sleeve (303) is slidably connected to the second U-shaped plate (301), and the third sleeve (403) is slidably connected to the third U-shaped plate (401). Auxiliary wheels (10) are provided on the first sleeve (203), the second sleeve (303) and the third sleeve (403), and track grooves (11) that match the auxiliary wheels (10) are provided on the first U-shaped plate (201), the second U-shaped plate (301) and the third U-shaped plate (401).

10. The multi-mode adjustable cavitation nozzle test bench according to claim 8, characterized in that: The loading plate (404) is configured to be U-shaped, and both sides of the loading plate (404) are threadedly connected to a fourth screw rod (12), and a clamping plate (121) is provided at the end of the fourth screw rod (12).

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