Jet flow experiment observation platform

Abstract

The invention discloses a jet flow experiment observation platform. The experimental device comprises an experimental water tank, a mixed-flow pump flow table, a spray head mounting column, an operation table, an imaging system and the like, through cooperation of magnetic stirring, creep flow pump conveying and a spray head height adjusting system, it is ensured that fluid is mixed evenly, spraying parameters are accurate, and therefore experiment repeatability and data reliability are improved; a light path is optimized by adopting a transparent glass water tank and a bottom light-transmitting design, and a switchable magnetic curtain / LED lamp curtain is matched, so that background noise interference is effectively eliminated, and high-contrast fluid dynamic capture is realized; based on a modular structure, the device can support rapid replacement of nozzle types, adjustment of light source configuration and installation of magnetic suction accessories, is adaptive to multi-scene experiment requirements, and has strong expansibility. By means of the layered mixed-flow pump flow table, the stable clamping groove design and the magnetic suction drainage system, the experiment preparation and cleaning process is simplified, and the overall experiment efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of fluid mechanics experiments and relates to a jet flow experiment observation platform. Background Art

[0002] Jet flow phenomena play an important role in many natural phenomena and industrial applications. For example, in the process of deep-sea mining, the interaction between minerals and water flow; the flow and diffusion of submarine hydrothermal fluids; the ejection of lava and gas during volcanic eruptions; the mixing of water bodies and pollutants during sewage discharge; and fields such as jet flushing technology, all involve the complex mechanisms of jet flow. The flow, diffusion, and mixing characteristics of jets not only directly affect the formation and development of these phenomena but also play a decisive role in engineering design and operation. Therefore, studying the basic laws and mechanisms of jet flow is crucial for optimizing the understanding of these natural phenomena and enhancing industrial applications.

[0003] However, there are still many deficiencies in the current research on jet flow mechanisms, especially in experimental research. Existing experimental equipment has some limitations in simulating and observing jet flow. For example, many traditional experimental platforms can only simulate single flow conditions, lacking flexibility and being difficult to adapt to changes in different experimental requirements; moreover, the existing platforms have low precision in aspects such as nozzle control, fluid mixing, and observation imaging, resulting in difficulty in accurately capturing the subtle changes in jet flow and its flow patterns under different conditions. These deficiencies not only limit the reliability of experimental data but also greatly restrict the research on jet flow mechanisms.

[0004] Therefore, there is an urgent need for a new jet flow experiment platform that can overcome the deficiencies of the existing technology, achieve more precise and flexible experimental control and flow observation, and thus provide strong support for the in-depth study of jet flow mechanisms. Based on this, the present invention provides a jet flow experiment observation platform, aiming to solve the limitations of the existing technology in experimental operation, jet control, flow observation, etc., and promote the further development of jet flow mechanism research. Summary of the Invention

[0005] In view of the above problems, the object of the present invention is to propose a jet flow experiment observation platform.

[0006] The technical solution of the present invention is as follows: A jet flow experiment observation platform described in the present invention includes an operation table, and the operation table includes an operation tabletop made of plastic material;

[0007] An experimental water tank, a mixed flow pump platform, and a nozzle installation column are fixedly arranged at the upper end of the operation table. The experimental water tank and the mixed flow pump platform are respectively arranged on both sides of the upper end of the operation table, and the nozzle installation column is fixedly arranged between the experimental water tank and the mixed flow pump platform at the upper end of the operation table.

[0008] Further, the experimental water tank includes a metal reinforcing frame made of magnetizable high-strength material and a transparent glass plate. The metal reinforcing frame is made of magnetizable high-strength material and is wrapped around the frame of the experimental water tank;

[0009] The transparent glass plate is made of high-strength ultra-white glass and is adhesively bonded with the metal reinforcing frame by glue to form a square glass water tank with an upper opening;

[0010] A vertical water outlet faucet is installed at the bottom side edge of the metal reinforcing frame.

[0011] Further, a light-transmitting hollow is opened on one side of the operation table, and its position is directly below the installation position of the experimental water tank;

[0012] Sink stabilizing clips are respectively installed at the four side corners of the light-transmitting hollow, and they fit with the bottom edge of the experimental water tank;

[0013] A magnetic stirring bottom is installed at the bottom on the other side of the operation table.

[0014] Further, the mixing pump flow table includes a partition rack table, a peristaltic pump, a first feed inlet, and a second feed inlet installed on the operation table;

[0015] The partition rack table includes a partition rack frame and a partition rack mesh plate. The partition rack frame divides the mixing pump flow table area into a two-layer structure, and the partition rack mesh plate is magnetically attracted to the top of the partition rack frame;

[0016] A mixing tank is installed in the lower space of the partition rack table, corresponding to the magnetic stirring bottom. The mixing tank is installed on the operation table and in the bottom space of the mixing pump flow table, and includes a mixing tank made of plastic material and a stirring magnetic needle,

[0017] The stirring magnetic needle is placed in the mixing tank and cooperates with a magnetic stirring base installed corresponding to the bottom of the operation table;

[0018] The peristaltic pump is installed at the center position of the upper wall of the partition rack mesh plate, and the pump inlet pipe connected to it extends into the mixing tank through the mesh holes of the partition rack mesh plate;

[0019] The first feed inlet and the second feed inlet are respectively installed on both sides of the upper wall of the partition rack mesh plate and are connected to the mixing tank through the mesh holes.

[0020] Further, the magnetic stirring base includes a base housing and a motor;

[0021] The base housing is fixedly installed at the bottom of the operation table, the motor is fixedly installed on the base housing, a connecting shaft and a permanent magnet are respectively installed on the motor, and the motor is connected to the permanent magnet through the connecting shaft;

[0022] A power connection port for connecting a power supply is also provided on the motor.

[0023] Furthermore, a magnetic curtain and a magnetic light curtain are also arranged on the experimental water tank, and the sizes of the magnetic curtain and the magnetic light curtain are both matched with the metal reinforcing frame of the experimental water tank;

[0024] The magnetic curtain includes a background curtain and a curtain magnetic frame, the curtain magnetic frame is magnetically attracted to the metal reinforcing frame, and the background curtain is attached to the experimental water tank;

[0025] The magnetic light curtain includes an LED array light curtain and a light curtain magnetic frame, the light curtain magnetic frame is magnetically attracted to the metal reinforcing frame, and the LED array light curtain is attached to the experimental water tank;

[0026] The magnetic curtain and the magnetic light curtain can be used separately according to different experimental requirements, or can be used in combination.

[0027] Furthermore, the spray head mounting post includes a spray head mounting post pile and a replaceable spray head part;

[0028] The bottom of the spray head mounting post pile is fixedly connected to the operating table surface. A post pile thread groove is provided in the middle of the spray head mounting post pile, and a rotating threaded rod matching the post pile thread groove is arranged on the inner wall of the post pile thread groove;

[0029] A caliper sliding card, a pile post sliding card and a spray head connecting piece are fixedly connected to the spray head mounting post pile. The spray head connecting piece includes a connecting handle, a connecting sliding sleeve and a sliding sleeve thread groove;

[0030] Distance scale lines are provided on the caliper sliding card, and it is sleeved with the connecting handle;

[0031] The pile post sliding card is sleeved and connected with the connecting sliding sleeve, and a slide way is arranged at the sleeved part, and balls are arranged in the slide way;

[0032] The post pile thread groove is fitted with the sliding sleeve thread groove;

[0033] A water pipe bracket is arranged at the tail of the connecting sliding sleeve;

[0034] The water outlet pipe of the peristaltic pump is placed on the water pipe bracket;

[0035] A connecting upper flange is fixedly connected to the front end of the connecting handle. A connecting nut and a water pipe connector are arranged on the upper part of the connecting upper flange. The connecting nut is fixedly welded on the connecting upper flange to cooperate with the spray head connecting piece, and the water pipe connector is welded on the connecting upper flange for binding and installing the water outlet pipe of the peristaltic pump on the water pipe connector, so as to be communicated with the replaceable spray head part.

[0036] Furthermore, the replaceable nozzle part includes a nozzle, and a lower connecting flange connected to the nozzle connecting part is fixedly connected to the upper part of the nozzle;

[0037] After the nozzle and the lower connecting flange are designed according to different test working conditions, they are integrally formed by means of 3D printing or the like, and then are hermetically connected to the upper connecting flange and the connecting nut and bolt of the nozzle connecting part through the installed connecting bolts and watertight soft pads.

[0038] Furthermore, movable table legs are also installed at the bottom of the operation table, and brakeable wheels are installed on the movable table legs.

[0039] Furthermore, an imaging system is also included, and the imaging system includes a light source and a camera.

[0040] Basic principles of the present invention: 1. Modular integrated design: By modular combination of an experimental water tank, a mixed-flow pump flow table, a nozzle installation column, an operation table and an imaging system, a complete experimental environment for jet flow is constructed, and each module cooperates to realize integrated operations of fluid mixing, jet control and process observation; 2. Magnetic attraction expansion and optical optimization: The experimental water tank adopts a composite structure of transparent glass and a magnetically attractable metal frame, which not only ensures the transparent observation requirement, but also supports the rapid installation of magnetic accessories (such as curtains, light curtains), and flexibly adapts to the optical conditions of different experimental scenarios; 3. Precise fluid regulation: The mixed-flow pump flow table uniformly mixes the fluid through a magnetic stirring system, and combines with the screw-rail adjustment mechanism of the nozzle installation column to realize precise adjustment of the jet height, angle and nozzle type, ensuring that the experimental parameters are controllable; 4. Multi-dimensional observation support: The imaging system combines the bottom light-transmitting hollow design and the layout of the top light source / camera to form multi-angle optical paths, clearly capturing the dynamic process of the jet flow and reducing environmental interference.

[0041] Advantages of the present invention: 1. Precise control of experimental parameters: Through the cooperation of the magnetic stirring, peristaltic pump transportation and nozzle height adjustment systems, it is ensured that the fluid is uniformly mixed and the jet parameters are accurate, improving the experimental repeatability and data reliability; 2. Significantly enhanced observation clarity: The transparent glass water tank and the bottom light-transmitting design optimize the optical path, and cooperate with the switchable magnetic curtain / LED light curtain to eliminate the interference of background noise and realize high-contrast capture of the fluid dynamics; 3. Flexible and expandable functions: The modular structure supports rapid replacement of the nozzle type, adjustment of the light source configuration and installation of magnetic accessories, adapting to the experimental requirements of multiple scenarios and having strong expandability; 4. Convenient and efficient operation: The layered mixed-flow pump flow table, the stable card slot design and the magnetic drainage system simplify the experimental preparation and cleaning processes, improving the overall experimental efficiency; 5. Stable and safe structure: The metal-reinforced frame, the anti-magnetic interference material and the integrated operation table design ensure the long-term stable operation of the equipment and reduce the risk of experimental accidents. Description of the Drawings

[0042] Figure 1It is a schematic diagram of the overall structure composition of the system of the present invention;

[0043] Figure 2 It is a structural diagram of the operating table in the present invention;

[0044] Figure 3 It is a schematic diagram of the structural composition of the magnetic stirring system in the present invention;

[0045] Figure 4 It is a schematic diagram of the structural composition of the magnetic attraction curtain in the present invention;

[0046] Figure 5 It is a schematic diagram of the composition of the magnetic attraction lamp curtain structure in the present invention;

[0047] Figure 6 It is a schematic diagram of the structural composition of the nozzle mounting post in the present invention;

[0048] In the figure: 1 is an experimental water tank, 11 is a metal reinforcing frame, 12 is a transparent glass plate,

[0049] 13 is a magnetic attraction curtain, 131 is a background curtain, 132 is a curtain magnetic attraction frame;

[0050] 14 is a magnetic attraction lamp curtain; 141 is an LED array lamp curtain, 142 is a lamp curtain magnetic attraction frame;

[0051] 15 is a water outlet faucet;

[0052] 2 is a mixed flow pump platform, 21 is a partition platform, 22 is a mixed flow tank, 23 is a peristaltic pump, 24 is a first feed inlet, 25 is a second feed inlet;

[0053] 211 is a partition frame, 212 is a partition mesh plate;

[0054] 221 is a mixed flow tank, 222 is a stirring magnetic needle;

[0055] 3 is a nozzle mounting post, 30 is a nozzle mounting post pile, 31 is a pile thread groove, 32 is a rotating threaded rod, 33 is a caliper sliding card, 34 is a pile column sliding card, 35 is a nozzle connecting piece, 36 is a replaceable nozzle piece;

[0056] 351 is a water pipe connector, 352 is a connecting nut, 353 is a connecting upper flange, 354 is a connecting handle, 355 is a connecting sliding sleeve, 356 is a sliding sleeve thread groove, 357 is a water pipe support, 358 is a ball;

[0057] 361 is a nozzle, 362 is a connecting bolt, 363 is a connecting lower flange, 364 is a watertight soft pad;

[0058] 4 is an operating table, 41 is an operating table surface, 42 is a light-transmitting hollow, 43 is a water tank stabilizing clamp, 44 is a magnetic stirring base, 45 is a movable table leg;

[0059] 441 is the base housing, 442 is the motor, 443 is the connecting shaft, and 444 is the permanent magnet;

[0060] 5 is the imaging system. Detailed implementation mode

[0061] The following further elaborates on the specific technical solutions of the present invention in combination with specific examples.

[0062] As shown in the figure, a jet flow experiment observation platform according to the present invention mainly consists of an experimental water tank 1, a mixed flow pump platform 2, a nozzle mounting column 3, an operation table 4, and an imaging system 5;

[0063] The experimental water tank 1 is placed on the operation table 4 and is used to hold the environmental fluid during the experiment. The experimental fluid jet can be ejected into the environmental fluid through the nozzle, and it is the place where jet flow occurs and diffuses;

[0064] The mixed flow pump platform 2 is placed on the operation table 4 and is mainly used to mix and prepare the experimental fluid and pump the experimental fluid through the pipeline. The position of the nozzle 361 is adjusted via the nozzle mounting column 3 to ensure ejection from the target experimental position;

[0065] The nozzle mounting column 3 is fixedly installed on the operation table 4, used to adjust the position of the nozzle 361 and provide support for the pipeline, ensuring that the experimental fluid flows smoothly out of the target experimental position;

[0066] The experimental water tank 1 and the mixed flow pump platform 2 are respectively installed on both sides of the operation table 4. The nozzle mounting column 3 is fixedly installed on the operation table 4, between the experimental water tank 1 and the mixed flow pump platform 2;

[0067] The imaging system 5 includes a light source and a camera. The light source can be a laser or a common light source according to the experimental situation, providing sufficient light for the experimental water tank 1 during the experiment to ensure clear imaging. The camera captures the occurrence process of jet flow in the experimental water tank 1 and the details of diffusion and mixing, and transmits the image information to the computer for further processing and analysis.

[0068] As Figure 1 shown, the experimental water tank 1 mainly consists of a metal reinforcement frame 11, a transparent glass plate 12, and a water outlet faucet 15; among them, the metal reinforcement frame 11 is composed of a magnetizable high-strength material, which is wrapped around the frame of the experimental water tank 1. On the one hand, it provides reinforcement for the experimental water tank 1 to protect the vulnerable corners from impact damage, and on the other hand, it provides an installation position for the magnetic accessories required during the experiment;

[0069] The transparent glass plate 12 is made of high-strength ultra-white glass, and is glued with the metal reinforcement frame 11 to form a square glass pool with an upper opening, which provides a container space for the jet experiment and ensures good light transmittance, which is convenient for experimental observation;

[0070] An opening is provided at the bottom side edge of the metal reinforced frame 11 and is vertically connected to a vertical water outlet faucet 15 to facilitate drainage after the test. At the same time, the side and vertical installation can ensure that the bottom opening has the smallest possible impact on the incident light source at the bottom and the jet experiment process, and does not affect the placement and removal of the experimental water tank 1.

[0071] The mixed flow pump flow platform 2 is mainly composed of a partition platform 21, a mixed flow tank 22, a peristaltic pump 23, a first feed port 24, and a second feed port 25; wherein the partition platform 21 is placed on the operating table 4, and is composed of a partition frame 211 and a partition mesh plate 212, wherein the partition frame 211 divides the mixed flow pump flow platform 2 area into a two-layer structure, and the partition mesh plate 212 is magnetically attracted to the top of the partition frame 211 for easy disassembly and assembly;

[0072] The mixing tank 22 is placed in the lower space of the partition table 21, and the peristaltic pump 23 is placed on the partition mesh plate 212. The pumping pipe of the peristaltic pump 23 can extend into the mixing tank 22 through the mesh holes of the partition mesh plate 212, so as to facilitate pumping the experimental fluid in the mixing tank 22. At the same time, the first feed port 24 and the second feed port 25 can be installed on the partition mesh plate 212 and communicated with the mixing tank 22 through the mesh holes, so as to facilitate adding the ingredients required for configuring the experimental fluid.

[0073] The mixing tank 22 is placed in the bottom space of the mixed flow pump flow platform 2 and on the operating table 4, and includes a mixing tank 221 and a stirring magnetic needle 222; the mixing tank 221 is used to contain and mix the experimental fluid, and the stirring magnetic needle 222 is placed in the mixing tank 221, and cooperates with the magnetic stirring base 44 installed corresponding to the bottom of the operating table 4 to stir the experimental fluid inside the mixing tank 221 for sufficient mixing; the mixing tank 221 can be made of plastic material to prevent magnetic interference to the stirring process, but is not limited to this.

[0074] like Figures 2-3 As shown, the operating table 4 is mainly composed of an operating table top 41, a light-transmitting hollow 42, a water tank stabilizing card 43, a magnetic stirring bottom 44, and a movable table leg 45; wherein, the operating table top 41 is used to place and install the experimental water tank 1, the mixed flow pump flow table 2, the nozzle installation column 3, etc. to provide installation space and operation space for experimental equipment, and the operating table top 41 can be made of plastic material to prevent magnetic interference to the stirring process, but is not limited thereto;

[0075] The operation tabletop 41 is provided with a light-transmitting hollow 42 on the side, which is directly below the installation position of the experimental water tank 1, so as to ensure that the light source of the imaging system 5 can smoothly pass through the bottom of the experimental water tank 1. At the same time, it enables the vertically arranged water outlet faucet 13 to discharge water smoothly;

[0076] The water tank fixing clamp 43 is installed at the four-side corners of the light-transmitting hollow 42, which fits with the bottom edge of the experimental water tank 1 and can well prevent the experimental water tank 1 from sliding;

[0077] The magnetic stirring base 44 is composed of a base shell 441, a motor 442, a connecting shaft 443 and a permanent magnet 444. It is installed at the bottom of the operation table 4 and corresponds to the position where the mixing tank 22 is placed, so as to generate magnetic induction with the stirring magnetic needle 222 to stir and mix the experimental fluid in the mixing tank 221. The base shell 441 is fixedly installed at the bottom of the operation table 4, providing a fixed installation space for the internal components of the magnetic stirring base 44. The motor 442 is fixedly installed on the base shell 441 and is provided with a power connection port, which can be connected to the power supply. At the same time, the motor 442 is connected to the permanent magnet 444 through the connecting shaft 443. When the motor 442 rotates, driving the connecting shaft 443 causes the permanent magnet 444 to move accordingly, generating magnetic induction with the stirring magnetic needle 222 inside the mixing tank 22, driving the stirring magnetic needle 222 to rotate, so as to fully mix the experimental fluid in the mixing tank 22; The movable table legs 45 are installed at the bottom of the operation table 4 and have brakeable wheels, which can facilitate the movement of the test bench.

[0078] As Figures 4-5 shown, a magnetic adsorption curtain 13 and a magnetic adsorption light curtain 14 for providing good optical observation conditions for the experimental process are also arranged in the experimental water tank 1; among them, the magnetic adsorption curtain 13 is composed of a background curtain 131 and a curtain magnetic adsorption frame 132. The size of the magnetic adsorption curtain 13 can match the metal reinforcement frame 11 of the experimental water tank 1. The curtain magnetic adsorption frame 132 can be magnetically adsorbed on the metal reinforcement frame 11, and the background curtain 131 can be attached to the experimental water tank 1 and is used in a specific experimental environment to isolate the background noise of the experimental environment;

[0079] The magnetic adsorption light curtain 14 is composed of an LED array light curtain 141 and a light curtain magnetic adsorption frame 142. The size of the magnetic adsorption light curtain 14 can match the metal reinforcement frame 11 of the experimental water tank 1. The light curtain magnetic adsorption frame 142 can be magnetically adsorbed on the metal reinforcement frame 11, and the LED array light curtain 141 can be attached to the experimental water tank 1. After connecting the power supply, it is used in a specific experimental environment to provide sufficient lighting conditions for the experiment; The magnetic adsorption curtain 13 and the magnetic adsorption light curtain 14 can be used separately or in combination according to different experimental requirements.

[0080] As Figure 6As shown in the figure, the nozzle mounting post 3 mainly consists of a nozzle mounting post pile 30, a pile post thread groove 31, a rotating threaded rod 32, a caliper sliding block 33, a pile post sliding block 34, a nozzle connecting piece 35, and a replaceable nozzle piece 36; among them, the bottom of the nozzle mounting post pile 30 is fixedly connected to the operation table surface 41 of the operation table 4, and a pile post thread groove 31 is opened in the middle of the nozzle mounting post pile 30. Cooperating with the rotating threaded rod 32, the height of the experimental nozzle can be adjusted by rotating the rotating handle at the top of the rotating threaded rod 32 to control the height of the experimental jet away from the bottom.

[0081] The rotating threaded rod 32, the caliper sliding block 33, the pile post sliding block 34, and the nozzle connecting piece 35 cooperate together to adjust the installation height of the nozzle; among them, the nozzle connecting piece 35 includes a water pipe connector 351, a connecting nut 352, a connecting upper flange 353, a connecting handle 354, a connecting sliding sleeve 355, a sliding sleeve thread groove 356, a water pipe support 357, and a ball 358; the caliper sliding block 33 and the pile post sliding block 34 are fixedly connected to the nozzle mounting post pile 30, and distance scale lines are opened on the caliper sliding block 33, which is sleeved with the connecting handle 354 of the nozzle connecting piece 35 to ensure the stability and smoothness of the nozzle connecting piece 35 during the up and down sliding process, and at the same time, the installation height can be judged through the scale on the caliper sliding block 33; the pile post sliding block 34 is sleeved and connected with the connecting sliding sleeve 355 of the nozzle connecting piece 35, and a ball 358 is arranged at the sleeved joint, and a slideway is provided to release the freedom degree in the horizontal direction of the nozzle mounting post pile 30 and slide smoothly at the same time. The pile post thread groove 31 fits with the sliding sleeve thread groove 356 of the nozzle connecting piece 35. When the pile post thread groove 31 rotates, a vertical force is generated by the friction with the sliding sleeve thread groove 356 of the nozzle connecting piece 35, thereby driving the nozzle connecting piece 35 to slide to adjust the height of the nozzle connecting piece 35, and thus adjusting the height of the experimental nozzle to control the height of the experimental jet away from the bottom; a water pipe support 357 is arranged at the tail of the connecting sliding sleeve 355 to place the water outlet pipe of the peristaltic pump 23 on the water pipe support 357 to ensure the stable flow of the experimental fluid during the experiment and avoid unnecessary experimental errors caused by speed pulsation caused by water pipe deflection and vibration; the front end of the connecting handle 354 is fixedly connected with a connecting upper flange 353, and a connecting nut 352 and a water pipe connector 351 are arranged on the upper part of the connecting upper flange 353. The connecting nut 352 is fixedly welded on the connecting upper flange 353 to cooperate with the nozzle connecting piece 35 to disassemble and assemble the nozzle; the water pipe connector 351 is welded on the connecting upper flange 353 to facilitate tying and installing the water outlet pipe of the peristaltic pump 23 on the water pipe connector 351 and further connecting it with the replaceable nozzle piece 36.

[0082] The replaceable nozzle part 36 is mainly composed of a nozzle 361, a connecting bolt 362, a connecting lower flange 363 and a watertight soft pad 364; the shape of the nozzle 361 can be adjusted according to specific experimental requirements, and a connecting lower flange 363 is fixedly connected to the upper part of the nozzle 361 for connecting with the nozzle connecting part 35. The nozzle 361 and the connecting lower flange 363 can be integrally formed by means of 3D printing or the like after being designed according to different test conditions, and then are hermetically connected to the connecting upper flange 353 and the connecting nut 352 bolt of the nozzle connecting part 35 through the connecting bolt 362 and the watertight soft pad 364 to complete the installation of the nozzle.

Claims

1. A jet flow experimental observation platform, comprising an operating table (4), characterized in that, The operation table (4) includes an operation tabletop (41) made of plastic material; At the upper end of the operation table (4), an experimental water tank (1), a mixed flow pump platform (2), and a nozzle mounting column (3) are fixedly provided. The experimental water tank (1) and the mixed flow pump platform (2) are respectively arranged on both sides of the upper end of the operation table (4), and the nozzle mounting column (3) is fixedly arranged between the experimental water tank (1) and the mixed flow pump platform (2) at the upper end of the operation table (4).

2. The jet flow experiment observation platform according to claim 1, characterized in that, The experimental water tank (1) includes a metal reinforcing frame (11) made of magnetizable high-strength material and a transparent glass plate (12). The metal reinforcing frame (11) is made of magnetizable high-strength material and is wrapped around the frame of the experimental water tank (1); The transparent glass plate (12) is made of high-strength ultra-white glass and is adhesively bonded with the metal reinforcing frame (11) by glue to form a square glass water tank with an upper opening; A vertical water faucet (15) is arranged at the bottom side edge of the metal reinforcing frame (11).

3. The jet flow experiment observation platform according to claim 2, characterized in that, On one side of the operation tabletop (41), a light-transmitting hollow (42) is opened, and its position is directly below the installation position of the experimental water tank (1); At the four side corners of the light-transmitting hollow (42), water tank stabilizing clamps (43) are respectively arranged, which fit with the bottom edge of the experimental water tank (1); At the bottom of the other side of the operation table (4), a magnetic stirring base (44) is arranged.

4. A jet flow experiment observation platform according to claim 3, characterized in that, The mixed flow pump platform (2) includes a partition platform (21), a peristaltic pump (23), a first feed inlet (24), and a second feed inlet (25) arranged on the operation table (4); The partition platform (21) includes a partition frame (211) and a partition mesh plate (212). The partition frame (211) divides the area of the mixed flow pump platform (2) into a two-layer structure, and the partition mesh plate (212) is magnetically attracted to the top of the partition frame (211); A mixing tank (22) is arranged in the lower space of the partition platform (21) at a position corresponding to the magnetic stirring base (44). The mixing tank (22) is arranged on the operation table (4) in the bottom space of the mixed flow pump platform (2), and includes a mixing tank (221) made of plastic material and a stirring magnetic needle (222). The stirring magnetic needle (222) is arranged in the mixing tank (221) and cooperates with the magnetic stirring base (44) correspondingly arranged at the bottom of the operation table (4); The peristaltic pump (23) is arranged at the center position of the upper wall of the partition mesh plate (212), and the pumped-in pipe connected to it extends into the mixing tank (22) through the mesh holes of the partition mesh plate (212); The first feed inlet (24) and the second feed inlet (25) are respectively arranged on both sides of the upper wall of the partition mesh plate (212) and are connected to the mixing tank (22) through the mesh holes.

5. The jet flow experiment observation platform according to claim 4, characterized in that, The magnetic stirring base (44) includes a base housing (441) and a motor (442); The base housing (441) is fixedly installed at the bottom of the operation table (4), the motor (442) is fixedly installed on the base housing (441), a connecting shaft (443) and a permanent magnet (444) are respectively installed on the motor (442), and the motor (442) is connected to the permanent magnet (444) through the connecting shaft (443). A power connection port for connecting the power supply is also installed on the motor (442).

6. The jet flow experiment observation platform according to claim 2, characterized in that, A magnetic curtain (13) and a magnetic light curtain (14) are also arranged on the experimental water tank (1), and the sizes of the magnetic curtain (13) and the magnetic light curtain (14) are both matched with the metal reinforcing frame (11) of the experimental water tank (1). The magnetic curtain (13) includes a background curtain (131) and a curtain magnetic frame (132), the curtain magnetic frame (132) is magnetically attracted to the metal reinforcing frame (11), and the background curtain (131) is attached to the experimental water tank (1). The magnetic light curtain (14) includes an LED array light curtain (141) and a light curtain magnetic frame (142), the light curtain magnetic frame (142) is magnetically attracted to the metal reinforcing frame (11), and the LED array light curtain (141) is attached to the experimental water tank (1). The magnetic curtain (13) and the magnetic light curtain (14) can be used separately or in combination according to different experimental requirements.

7. A jet flow experiment observation platform according to claim 4, characterized in that, The spray head mounting post (3) includes a spray head mounting post pile (30) and a replaceable spray head part (36). The bottom of the spray head mounting post pile (30) is fixedly connected to the operation table surface (41), a column pile thread groove (31) is opened in the middle of the spray head mounting post pile (30), and a rotating threaded rod (32) matching the column pile thread groove (31) is installed on the inner wall of the column pile thread groove (31). A caliper sliding card (33), a pile column sliding card (34) and a spray head connecting part (35) are fixedly connected to the spray head mounting post pile (30), and the spray head connecting part (35) includes a connecting handle (354), a connecting sliding sleeve (355) and a sliding sleeve thread groove (356). Distance scale lines are opened on the caliper sliding card (33), and it is sleeved with the connecting handle (354). The pile column sliding card (34) is connected with the connecting sliding sleeve (355) in a socket connection, and a slideway is arranged at the socket connection, and a ball (358) is arranged in the slideway. The column pile thread groove (31) is fitted with the sliding sleeve thread groove (356). A water pipe bracket (357) is arranged at the tail of the connecting sliding sleeve (355). The water outlet pipe of the peristaltic pump (23) is placed on the water pipe bracket (357). A connecting upper flange (353) is fixedly connected to the front end of the connecting handle (354). A connecting nut (352) and a water pipe connector (351) are arranged on the upper part of the connecting upper flange (353). The connecting nut (352) is fixedly welded to the connecting upper flange (353) to cooperate with the nozzle connecting member (35). The water pipe connector (351) is welded to the connecting upper flange (353) for binding and installing the water outlet pipe of the peristaltic pump (23) on the water pipe connector (351), so as to communicate with the replaceable nozzle member (36).

8. A jet flow experiment observation platform according to claim 7, characterized in that, The replaceable nozzle member (36) includes a nozzle (361), and a connecting lower flange (363) connected to the nozzle connecting member (35) is fixedly connected to the upper part of the nozzle (361). After the nozzle (361) and the connecting lower flange (363) are designed according to different test working conditions, they are integrally formed by means of 3D printing or the like, and then are bolted and water-tightly connected to the connecting upper flange (353) and the connecting nut (352) of the nozzle connecting member (35) through the arranged connecting bolts (362) and water-tight soft pads (364).

9. The jet flow experiment observation platform according to claim 1, characterized in that Movable table legs (45) are also arranged at the bottom of the operating table (4), and brakeable wheels are arranged on the movable table legs (45).

10. The jet flow experiment observation platform according to claim 1, characterized in that, It further includes an imaging system (5), and the imaging system (5) includes a light source and a camera.

Images