Cavitation bubble generator

Abstract

The present invention provides a cavitation bubble generating device, comprising a bionic mechanism and a driving mechanism, wherein the bionic mechanism comprises a simulated shrimp claw, and the driving mechanism is used to drive the shrimp claw to simulate a closing motion from an open state to a closed state, and to make the angular velocity of at least one of the shrimp claws change from slow to fast during the closing motion. The cavitation bubble generating device can improve the accuracy of the test results and the cavitation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of cavitation, in particular to a cavitation bubble generating device. Background Art

[0002] The pistol shrimp is a tropical marine creature. It has a pair of claws of varying sizes, with the larger claw being about half its body length. When stimulated by an external stimulus, the shrimp quickly closes its claws to form a high-speed water jet, thereby generating cavitation bubbles. When the bubble collapses, the pressure pulse generated is enough to stun or kill the prey.

[0003] At present, based on the discovery that cavitation is produced by the closing of the claws of the mantis shrimp, a bionic cavitation generating device has been designed, so as to study the cavitation efficiency of the claws of the mantis shrimp.

[0004] Research has found that the existing bionic cavitation generating device simulating shrimp has the following disadvantages:

[0005] The accuracy of the test results of existing bionic cavitation generating devices is poor. Summary of the invention

[0006] The object of the present invention is to provide a cavitation bubble generating device, which can improve the accuracy of test results and the cavitation efficiency.

[0007] The embodiment of the present invention is achieved as follows:

[0008] This embodiment provides a cavitation bubble generating device, comprising:

[0009] The bionic mechanism and the driving mechanism, the bionic mechanism includes a simulated shrimp claw, and the driving mechanism is used to drive the shrimp claw to simulate the closing movement from an open state to a closed state, and to make the angular velocity of at least one of the shrimp claws change from slow to fast during the closing movement.

[0010] In an optional embodiment, the bionic mechanism also includes a mounting part, the shrimp claw includes a movable claw and a fixed claw, the movable claw rotates in cooperation with the mounting part, and the fixed claw is fixedly connected to the mounting part; the driving mechanism is used to drive the movable claw to rotate relative to the fixed claw, and to make the fixed claw change from slow to fast during the closing movement.

[0011] In an optional embodiment, at least one of the movable claw and the fixed claw is detachably connected to the mounting member.

[0012] In an optional embodiment, the driving mechanism includes a sliding member and a force transmission member, the sliding member and the mounting member are slidably matched, and the force transmission member is connected to the movable claw. When the force transmission member drives the movable claw to rotate, the force transmission member drives the sliding member to slide, and under the support of the sliding member, the angular velocity of the movable claw during the closing movement changes from slow to fast.

[0013] In an optional embodiment, the sliding member has at least two slopes with different angles, and the at least two slopes are connected, and any one of the at least two slopes is used to abut against the force transmission member; when the force transmission member drives the moving claw to perform a closing movement, the force transmission member always abuts against one slope and passes through at least two slopes in sequence, so that the angular velocity of the moving claw changes from slow to fast.

[0014] In an optional embodiment, the driving mechanism also includes a gear set, which includes a meshing output gear and an input gear, and the transmission ratio between the input gear and the output gear is less than 1; the output gear is connected to the movable clutch, the input gear is rotatably connected to the mounting member, and the force transmission member is connected to the input gear for driving the input gear to rotate.

[0015] In an optional embodiment, the driving mechanism further includes a limiter connected to the mounting member for limiting the rotation angle of the movable claw, so that the position of the movable claw remains unchanged when the claw of the shrimp is in a closed state.

[0016] In an optional embodiment, the driving mechanism further includes an operating member, the operating member is rotatably connected to the mounting member, and the operating member is connected to the sliding member for driving the sliding member to slide.

[0017] In an optional embodiment, the driving mechanism further includes a first elastic reset member, which is connected to both the operating member and the mounting member, and is used to cause the operating member to generate a tendency to drive the sliding member away from the force transmission member.

[0018] In an optional embodiment, the driving mechanism further includes a second elastic reset member, which is connected to both the force transmission member and the mounting member, and is used to cause the force transmission member to generate a tendency to drive the claws of the shrimp to perform a closing movement.

[0019] The beneficial effects of the embodiments of the present invention are:

[0020] In summary, the present embodiment provides a cavitation bubble generating device, which uses a driving mechanism to drive a simulated shrimp claw to perform a closing movement, thereby testing the cavitation efficiency of the shrimp claw. During the test, when the driving mechanism drives the shrimp claw to perform a closing movement, that is, when the driving mechanism drives at least one of the shrimp claws to rotate relative to another claw, the driving mechanism can change the angular velocity of at least one of the shrimp claws, so that the angular velocity of at least one of the claws changes from slow to fast, that is, the linear velocity of at least one of the claws changes from slow to fast. In this way, it is avoided that the front edge of the shrimp claw generates cavitation due to excessive linear velocity during the closing movement and before reaching the closed state, but the cavitation bubbles are concentratedly generated after the high-speed water jet ejected from between the two claws, thus avoiding the dispersion of energy, thereby making the test results more accurate, and being able to obtain a higher cavitation efficiency, thereby facilitating the effective use of the cavitation bubble generating device in various industries and playing a role in reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of a cavitation bubble generating device according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at II in the middle;

[0024] Figure 3 A schematic structural diagram of a cavitation bubble generating device from one perspective of an embodiment of the present invention (in a state where the claws of a shrimp are open);

[0025] Figure 4 It is a structural schematic diagram of another perspective of the cavitation bubble generating device of an embodiment of the present invention (the claws of the shrimp are open);

[0026] Figure 5 is a schematic structural diagram of an operating member according to an embodiment of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the cavitation bubble generating device from another perspective of an embodiment of the present invention (the claws of the shrimp are closed);

[0028] Figure 7 It is a schematic diagram of the matching structure of the input gear and the limiting member according to an embodiment of the present invention.

[0029] icon:

[0030] 001-cavitation bubble generating device; 100-bionic mechanism; 110-shrimp claw; 111-moving claw; 112-fixed claw; 120-fixing assembly; 121-fixing plate; 122-rotating shaft; 123-fixing platform; 200-driving mechanism; 210-operating member; 211-first connecting part; 212-second connecting part; 213-through hole; 214-mounting column; 220-positioning column; 230-mounting platform; 231-sliding groove ; 240-sliding member; 241-first slope; 242-second slope; 250-driving member; 260-force transmission member; 261-roller; 270-gear assembly; 271-input gear; 272-output gear; 273-limiting hole; 280-first elastic reset member; 290-second elastic reset member; 300-limiting member; 400-mounting member; 410-mounting plate portion; 420-box portion; 421-operating port. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the following embodiments, unless otherwise specified, the first rotation direction refers to the direction of the arrows ab in the figure; the second rotation direction refers to the direction of the arrows ba in the figure; the first direction refers to the direction of the arrows cd; and the second direction refers to the direction of the arrows dc.

[0038] The present embodiment provides a cavitation bubble generating device 001, which studies the cavitation phenomenon when the shrimp claws are closed by simulating the movement of the shrimp claws from an open state to a closed state. The device has a reasonable structure, and the process of driving the simulated shrimp claw closing movement is closer to the real movement law of the shrimp claws. The test results are highly reliable and accurate, which is conducive to subsequent research and application.

[0039] See also Figure 1 In this embodiment, the cavitation bubble generating device 001 includes a bionic mechanism 100 and a driving mechanism 200. The bionic mechanism 100 includes a simulated shrimp claw 110. The driving mechanism 200 is used to drive the shrimp claw 110 to simulate the closing movement from an open state to a closed state, and to make the angular velocity of at least one of the shrimp claws 110 change from slow to fast during the closing movement.

[0040] See also Figure 1 and Figure 2 ,in, Figure 2 FIG. 1 shows a partially enlarged structural diagram of the claw 110 of the shrimp. The structures of the claw 110 of the shrimp in other figures are similar to those of FIG. Figure 2 The cavitation bubble generating device 001 provided in this embodiment uses a driving mechanism 200 to drive the simulated shrimp claws 110 to perform a closing movement, so as to test the cavitation efficiency of the shrimp claws 110. During the test, when the driving mechanism 200 drives the shrimp claws 110 to perform a closing movement, that is, when the driving mechanism 200 drives at least one of the shrimp claws 110 to rotate relative to another claw, the driving mechanism 200 can change the angular velocity of at least one of the shrimp claws 110, so that the angular velocity of at least one of the claws changes from slow to fast, that is, the linear velocity of at least one of the claws changes from slow to fast. In this way, cavitation can be avoided at the leading edge of the shrimp claw 110 due to excessive linear velocity during the closing movement and before the shrimp claw 110 reaches the closed state. Instead, cavitation bubbles are concentratedly generated behind the high-speed water jet ejected from between the two claws. This avoids energy dispersion, thereby making the test results more accurate and achieving higher cavitation efficiency, thereby facilitating the effective use of the cavitation bubble generating device 001 in various industries and reducing energy loss.

[0041] In this embodiment, optionally, the cavitation bubble generating device 001 further includes a mounting member 400, which may be a box structure, and includes a mounting plate portion 410 and a box portion 420 having an opening, and an operation port 421 is provided on the other side of the box portion 420 opposite to the side having the opening, and the operation port 421 may be a strip-shaped opening. The mounting plate portion 410 is connected to the box portion 420, and the mounting plate portion 410 closes the opening on the box portion 420.

[0042] Optionally, the mounting plate portion 410 may be a rectangular plate, and the box body portion 420 may be a cubic box. Obviously, in other embodiments, the mounting plate portion 410 and the box body portion 420 may also be other structures.

[0043] See also Figure 3 and Figure 4 In this embodiment, optionally, the bionic mechanism 100 also includes a fixing component 120, and the fixing component 120 includes two opposite fixing plates 121, and the two opposite fixing plates 121 are both connected to the mounting plate portion 410 and have a spacing along the width direction of the mounting plate portion 410.

[0044] Furthermore, the fixing assembly 120 further includes a rotating shaft 122 and a fixing platform 123. The fixing platform 123 is fixedly connected to at least one of the fixing member and the mounting plate portion 410. The side of the fixing platform 123 away from the mounting plate portion 410 is set as an inclined surface. The fixing platform 123 is used to fix one of the claws of the shrimp 110. The rotating shaft 122 is rotatably connected to the two fixing plates 121. The rotating shaft 122 is used to fix the other claw of the shrimp 110 and drive the claw connected to the rotating shaft 122 to rotate, thereby realizing the closing and opening of the shrimp claw 110.

[0045] It should be noted that, in order to simplify the cavitation bubble generating device 001, one of the claws 110 of the shrimp is fixed, and only the other claw needs to be driven to rotate.

[0046] Specifically, the simulated claw 110 of the shrimp claw 110 includes a moving claw 111 and a fixed claw 112. When the shrimp claw 110 is connected to the fixed assembly 120, the moving claw 111 of the shrimp claw 110 is connected to the rotating shaft 122, and the two are relatively fixed in the circumferential direction of the rotating shaft 122, that is, the rotating shaft 122 can drive the moving claw 111 to rotate around its axis. The fixed claw 112 is fixed on the fixed platform 123, and the fixed claw 112 is located on the inclined surface of the fixed platform 123. After the fixed claw 112 is fixed, the front edge of the fixed claw 112 is tilted downward. When the rotating shaft 122 rotates, it can drive the moving claw 111 to rotate relative to the fixed claw 112, thereby simulating the closing and opening actions of the shrimp claw 110.

[0047] In this embodiment, after the shrimp claw 110 is installed on the fixing assembly 120, the fixed claw 112 is located below the moving claw 111. Obviously, in other embodiments, the fixed claw 112 can be located above the moving claw 111, or the positions of the two can be equal in height.

[0048] Optionally, at least one of the movable claw 111 and the fixed claw 112 is detachably connected to the fixed component 120. In the present embodiment, the movable claw 111 and the fixed claw 112 are both detachably connected to the fixed component 120 as an example for explanation. The movable claw 111 and the fixed claw 112 are both detachably connected to the fixed component 120, and the movable claw 111 and the fixed claw 112 can be replaced according to the test needs, for example, the movable claw 111 and the fixed claw 112 of different sizes can be replaced, thereby improving the accuracy of the test results.

[0049] It should be noted that the fixed claw 112 and the fixing platform 123 can be integrally formed, and the fixing platform 123 and the mounting plate portion 410 are detachably connected.

[0050] Optionally, the shrimp claw 110 can be made by 3D printing technology. The shrimp claw 110 has a good simulation effect and is closer to the real shrimp claw 110, thereby improving the accuracy of the test results.

[0051] Please combine Figure 3 Also see Figure 4 In this embodiment, optionally, the driving mechanism 200 includes an operating member 210, a positioning column 220, a mounting platform 230, a sliding member 240, a driving member 250, a force transmission member 260, a gear assembly 270, a first elastic reset member 280 and a second elastic reset member 290. The positioning column 220 and the mounting platform 230 are both connected to the mounting plate portion 410, the operating member 210 is located between the positioning column 220 and the sliding member 240, the operating member 210 is movably connected to the positioning column 220, and one end of the operating member 210 extends out of the operating port 421. The sliding member 240 is slidably matched with the mounting platform 230, and the operating member 210 is used to drive the sliding member 240 to slide. The force transmission member 260 is connected to the rotating shaft 122 through the gear assembly 270, and the force transmission member 260 can abut against the sliding platform, and under the abutment of the sliding platform, the angular velocity of the movable claw 111 during the closing movement changes from slow to fast.

[0052] See also Figure 5In this embodiment, optionally, the operating member 210 is rod-shaped, and the operating member 210 has a first connecting portion 211 and a second connecting portion 212 arranged and connected along the extension direction of the operating member 210, and a through hole 213 is provided on the second connecting portion 212, and the through hole 213 is a long strip, and the through hole 213 extends along the extension direction of the second connecting portion 212. A mounting column 214 is provided on the first connecting portion 211, and the mounting column 214 is arranged perpendicular to the first connecting portion 211. The operating member 210 is rotatably connected to the positioning column 220 at the connecting position of the first connecting portion 211 and the second connecting portion 212, and the force arm of the first connecting portion 211 is greater than the force arm of the second connecting portion 212, so that the operation is more labor-saving. One end of the first elastic reset member 280 is connected to the mounting plate portion 410, and the other end of the first elastic reset member 280 is connected to the mounting column 214. The first elastic reset member 280 is used to make the operating member 210 have a tendency to rotate along the first rotation direction.

[0053] Optionally, the driving member 250 is installed on the sliding member 240, and one end of the driving member 250 extends into the through hole 213 on the operating member 210. When the operating member 210 rotates relative to the positioning column 220, the driving member 250 drives the sliding member 240 to slide relative to the mounting platform 230.

[0054] Optionally, a slide groove 231 is provided on the mounting platform 230, and the slide groove 231 extends along the length direction of the mounting plate portion 410. The slide groove 231 can be a dovetail groove or a T-shaped groove.

[0055] Optionally, the sliding member 240 is provided with a sliding portion that cooperates with the dovetail groove or the T-shaped groove, so that the sliding member 240 slides relative to the slide groove 231 along the extension direction of the slide groove 231 under the drive of the operating member 210, and the sliding member 240 will not fall off the slide groove 231. When the operating member 210 rotates along the first rotation direction under the action of the first elastic reset member 280, the sliding member 240 slides relative to the slide groove 231 along the first direction. When the operating member 210 rotates along the first rotation direction under the action of an external force, the sliding member 240 slides relative to the slide groove 231 along a second direction opposite to the first direction. Both the first direction and the second direction are parallel to the extension direction of the slide groove 231.

[0056] Further, at least two slopes are provided on the side of the sliding member 240 away from the slide groove 231. The at least two slopes are connected in sequence, and the slopes of the at least two slopes are different. In other words, each slope has an angle with the horizontal plane, and the angles of each slope with the horizontal plane are different. In the first direction, the slopes of the at least two slopes gradually decrease. In other words, in the second direction, the slopes of the at least two slopes gradually increase.

[0057] See also Figure 4 or Figure 6Optionally, two slopes are used as an example in this embodiment. The two slopes are the first slope 241 and the second slope 242 in the first direction, and the slope of the first slope 241 is greater than the slope of the second slope 242, that is, the angle between the first slope 241 and the horizontal plane is equal to the angle between the second slope 242 and the horizontal plane, that is, the first slope 241 is steeper.

[0058] Optionally, the first slope 241 and the second slope 242 have an arc transition.

[0059] In this embodiment, optionally, one end of the force transmission member 260 is used to contact any slope surface on the sliding member 240. The other end of the force transmission member 260 is connected to the gear assembly 270.

[0060] Furthermore, the force transmission member 260 is provided with a roller 261, and the roller 261 is used to travel on the slope, thereby reducing friction and facilitating the movement of the force transmission member 260 relative to the sliding member 240.

[0061] Optionally, one end of the second elastic reset member 290 is connected to the mounting plate portion 410 , and the other end of the second elastic reset member 290 is connected, and the second elastic reset member 290 causes the force transmission member 260 to generate a tendency to rotate along the second rotation direction.

[0062] Optionally, the gear assembly 270 includes an output gear 272 and an input gear 271 , and a transmission ratio between the input gear 271 and the output gear 272 is less than 1, that is, the gear assembly 270 is an acceleration gear structure.

[0063] Furthermore, a limiting hole 273 is provided on the input gear 271 , and the limiting hole 273 extends along the circumferential direction of the input gear 271 .

[0064] It should be noted that the number of gears of the gear assembly 270 is selected as needed and is not limited to two gears.

[0065] The cavitation bubble generating device 001 provided in this embodiment has a mounting platform 230 connected to the mounting plate portion 410, and a slide groove 231 on the mounting platform 230 extends along the length direction of the mounting plate portion 410. The operating member 210 is rotationally matched with the positioning column 220. The sliding connection is slidingly matched with the slide groove 231, and the connecting member on the sliding member 240 is inserted into the through hole 213 on the operating member 210. The roller 261 on the force transmission member 260 is against the slope on the sliding member 240. The end of the force transmission member 260 away from the sliding member 240 is fixedly connected to the gear shaft of the input gear 271, and the input gear 271 is detachably connected to one of the two fixed plates 121. The output gear 272 is sleeved outside the rotating shaft 122 and is detachably connected to the rotating shaft 122, and the two are relatively fixed in the circumferential direction of the rotating shaft 122. The output gear 272 meshes with the input gear 271. When the driving mechanism 200 is needed to make the claw 110 of the shrimp from the closed state to the open state, the operating member 210 is rotated to rotate along the second rotation direction, and the operating member 210 drives the sliding member 240 to slide along the second direction, and the sliding member 240 approaches the force transmission member 260, and drives the force transmission member 260 that is against the slope of the sliding member 240 to rotate along the first rotation direction, and finally the movable claw 111 is rotated along the second rotation direction through the gear assembly 270, and the movable claw 111 is opened relative to the fixed claw 112. In the process of the sliding member 240 approaching the force transmission member 260, the roller 261 on the force transmission member 260 first contacts the first slope 241, and then reaches the second slope 242 after passing the first slope 241. When the movable claw 111 is fully opened, the roller 261 is just located at the top of the second slope 242. In this process, the first elastic reset member 280 and the second elastic reset member 290 are both stretched and have elastic force to restore deformation. When the claw 110 needs to complete the closing movement from the open state to the closed state, the external force applied to the operating member 210 is removed. At this time, the operating member 210 is pulled to rotate along the first rotation direction under the action of the first elastic reset member 280, so that the operating member 210 has a tendency to drive the sliding member 240 to slide along the first direction, that is, the sliding member 240 is away from the force transmission member 260.At the same time, under the elastic force of the second elastic reset member 290, the force transmission member 260 rotates along the second rotation direction, and the force transmission member 260 is always kept tightly against the slope of the sliding member 240, and the force transmission member 260 reaches the first slope 241 from the second slope 242 during the rotation along the second rotation direction. Since the slope of the second slope 242 is smaller than the slope of the first slope 241, the angular velocity of the force transmission member 260 when moving on the second slope 242 is smaller than the angular velocity when moving on the first slope 241, that is, the angular velocity of the force transmission member 260 changes from slow to fast. In other words, the angular velocity of the moving claw 111 changes from slow to fast, and the linear velocity of the leading edge of the moving claw 111 changes from slow to fast, so that the shrimp claw 110 only produces cavitation due to the action of the high-speed water jet when in the closed state, and does not produce cavitation at the leading edge of the moving claw 111 before reaching the closed state, thereby improving the cavitation efficiency.

[0066] It should be understood that when the first elastic reset member 280 pulls the operating member 210 to rotate to drive the sliding member 240 to slide along the first direction, the speed of the sliding member 240 is less than the linear speed of the force transmission member 260 in the first direction, thereby ensuring that the roller 261 on the force transmission member 260 is always against the slope during the closing movement of the shrimp claw 110.

[0067] It should be noted that both the first elastic reset member 280 and the second elastic reset member 290 can be configured as tension springs. The elastic potential energy of the tension spring is used as an energy input source to facilitate calculation of cavitation efficiency.

[0068] It should be noted that, in other embodiments, the sliding mating surfaces of the sliding member 240 and the sliding groove 231 may be set as at least two inclined surfaces with different angles, which can also achieve the function of changing the angular velocity of the force transmission member 260 .

[0069] It should be noted that, in other embodiments, the driving mechanism 200 can simultaneously drive the movable claw 111 and the fixed claw 112 to rotate to achieve closing and opening.

[0070] See also Figure 7In other embodiments, the driving mechanism 200 also includes a limit member 300, which is disposed on a fixed plate 121 on which an input gear 271 is mounted, and the limit member 300 extends into a limit hole 273 of the input gear 271. When the input gear 271 rotates, the limit member 300 can abut against one of the two side walls of the limit hole 273 in its extension direction. In other words, when the input gear 271 rotates along the first rotation direction and drives the shrimp claw 110 to open, and when the shrimp claw 110 is just in the open state, the limit member 300 abuts against one of the two side walls, so that the movable claw 111 in the open state is located in the same position and remains unchanged during multiple tests of the shrimp claw 110; similarly, when the input gear 271 rotates along the second rotation direction and drives the shrimp claw 110 to close, and when the shrimp claw 110 is just in the closed state, the limit member 300 abuts against the other of the two side walls, so that the movable claw 111 in the closed state is located in the same position and remains unchanged during multiple tests of the shrimp claw 110, thereby improving the accuracy and reliability of the test results.

[0071] The cavitation bubble generating device 001 provided in this embodiment generates a cavitation bubble when the shrimp claw 110 switches from an open state to a closed state during the test, which is closer to the actual movement law of the shrimp claw 110, and the test result is more accurate, which can improve the cavitation efficiency.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cavitation bubble generating device, characterized in that: include: A bionic mechanism and a driving mechanism, wherein the bionic mechanism comprises a simulated shrimp claw, and the driving mechanism is used to drive the shrimp claw to simulate a closing movement from an open state to a closed state, and to make the angular velocity of at least one of the shrimp claws change from slow to fast during the closing movement; The bionic mechanism also includes a mounting part, the claw of the shrimp includes a movable claw and a fixed claw, the movable claw is rotationally matched with the mounting part, and the fixed claw is fixedly connected to the mounting part; the driving mechanism is used to drive the movable claw to rotate relative to the fixed claw, and make the angular velocity of the movable claw change from slow to fast during the closing movement; The driving mechanism comprises a sliding member and a force transmission member, wherein the sliding member is slidably matched with the mounting member, and the force transmission member is connected with the movable claw. When the force transmission member drives the movable claw to rotate, the force transmission member drives the sliding member to slide, and under the support of the sliding member, the angular velocity of the movable claw during the closing movement changes from slow to fast; The sliding member has at least two slopes with different angles, the at least two slopes are connected, and any one of the at least two slopes is used to abut against the force transmission member; when the force transmission member drives the movable claw to perform a closing movement, the force transmission member always abuts against one of the slopes and passes through the at least two slopes in sequence, so that the angular velocity of the movable claw changes from slow to fast; At least one of the movable claw and the fixed claw is detachably connected to the mounting member.

2. The cavitation bubble generating device according to claim 1, characterized in that: The driving mechanism further comprises a gear set, wherein the gear set comprises an output gear and an input gear in meshing relationship, and a transmission ratio between the input gear and the output gear is less than 1; The output gear is connected to the movable clutch, the input gear is rotatably connected to the mounting member, and the force transmission member is connected to the input gear for driving the input gear to rotate.

3. The cavitation bubble generating device according to claim 1, characterized in that: The driving mechanism also includes a limiting member, which is connected to the mounting member and is used to limit the rotation angle of the movable claw, so that the position of the movable claw remains unchanged when the shrimp claw is in a closed state.

4. The cavitation bubble generating device according to claim 1, characterized in that: The driving mechanism further comprises an operating member, wherein the operating member is rotatably connected to the mounting member, and the operating member is connected to the sliding member for driving the sliding member to slide.

5. The cavitation bubble generating device according to claim 4, characterized in that: The driving mechanism further comprises a first elastic reset member, which is connected to the operating member and the mounting member at the same time, and is used to enable the operating member to generate a tendency to drive the sliding member away from the force transmission member.

6. The cavitation bubble generating device according to claim 1, characterized in that: The driving mechanism also includes a second elastic reset member, which is connected to the force transmission member and the mounting member at the same time, and is used to make the force transmission member generate a tendency to drive the claws of the shrimp to perform a closing movement.

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