CN219328583U - A test device for the impact of a liquid on a contact surface when it falls - Google Patents

Abstract

The utility model discloses a test device for impacting a contact surface when a liquid falls, which is provided with a lifting platform, and the lifting platform is fixed on a column of a metal frame by a connection structure that can move up and down; on the lifting platform, a high-precision injection pump is arranged , The high-precision syringe pump is connected to the clamping device through the syringe; a collision plate is set in the metal frame and below the lifting platform, and the collision plate is supported by the experimental support platform below it. Adopt the above-mentioned technical scheme to improve the degree of automation of the experiment; obtain accurate and comprehensive experimental data in real time; adopt a simple structure to completely simulate the natural state, and eliminate human interference during the test to the greatest extent; set aside observation at the frontal test collision of the device The space is convenient for observing the droplet collision shape; the data of the water droplet experiment can be processed in time and quickly to improve the experiment efficiency.

Description

A test device for the impact of a liquid on a contact surface when it falls

technical field

The utility model belongs to the technical field of liquid dynamics and morphology research. More specifically, the utility model relates to a test device for impacting a contact surface when a liquid falls.

Background technique

In the prior art, there are relatively few complete experimental devices for measuring droplet collisions, and the main research is the observation of morphological changes such as droplet splashing and spreading. Experimental methods commonly used by experimenters include:

1. The infusion stand + needle tube is used to simulate the droplet drop: the needle tube input requires the experimenter to manually control the speed and quantity of the droplet drop, which is uncontrollable, resulting in large experimental errors and less effective data;

2. Input the droplet by holding the syringe: since there is no experimental platform that can adjust the height, it brings difficulties to measure the actual droplet height, and it is impossible to determine the droplet in the subsequent numerical simulation and verification experiments. The precise drop height affects the subsequent experimental results; at the same time, due to the influence of manual extrusion, the quality of the droplets produced by the needle tube is uneven and the speed is uncontrollable, which has a great impact on the experimental results.

3. Control the droplet by fixing the high-precision syringe pump: This method needs to constantly change the height of the high-precision syringe pump to ensure the collision force data of different heights. If there is no complete test bench, reset the high-precision syringe pump It will take a lot of time; at the same time, due to height changes or position changes during the installation process, the droplet may not be able to just contact the collision plate, which will affect the efficiency of the experiment.

Utility model content

The utility model provides a test device for impacting a contact surface when a liquid falls, and the purpose is to quickly and accurately obtain experimental data of the impact of a liquid falling on a contact surface.

In order to achieve the above object, the technical scheme that the utility model takes is:

The test device for impacting the contact surface when the liquid falls in the utility model includes a metal frame; the test device is provided with a lifting platform, and the lifting platform is fixed on the column of the metal frame by a connection structure that can move up and down; On the lifting platform described above, a high-precision syringe pump is set, and the high-precision syringe pump is connected to the clamping device through a syringe; a collision plate is set in the metal frame and below the lifting platform, and the collision plate is composed of Supported by the experimental support platform below.

The experimental device is provided with an experimental console, and the experimental console is provided with an experimental data processor and a man-machine dialogue device.

A pressure sensor is arranged on the collision plate, and the pressure sensor is connected with the experiment console through a signal line.

A rotary drive mechanism is set between the experimental support table and the collision plate to realize the rotary motion of the collision plate on the horizontal plane; the rotary drive mechanism is connected to the experimental console through a signal line.

A tilting drive mechanism for the collision plate is also provided on the rotary drive mechanism to realize the tilting movement of the collision plate relative to the horizontal plane; the pressure sensor is connected to the experimental console through a signal line.

The collision plate is set in the collision plate; the collision plate is made of multiple pieces, and is made of different materials and different surface structures; when the experiment is in progress, one of them is selected and placed in the collision plate.

On the ground below the experimental support platform, a water collection tray is set.

On the column of the metal frame, one or more blowers are arranged, and the blowers are connected with the experimental console through signal lines.

On the column of the metal frame, one or more video recorders are arranged, and the video recorders are connected with the experimental console through signal lines.

The lifting platform is provided with a high-precision injection pump moving mechanism, and the high-precision injection pump moving mechanism is connected to the experimental console through a signal line to realize the horizontal movement of the high-precision injection pump on the lifting platform.

The utility model adopts the above technical scheme, integrates the functions of droplet emission, signal collection and data analysis, and has a high degree of automation in the experiment; by collecting the impact force and impact shape of the water droplet on the collision surface, accurate and comprehensive experimental data can be obtained in real time ;With a simple structure, the height of the water drop launcher and the shape of the collision plate can be easily adjusted, completely simulating the natural state, and the human interference during the test is eliminated to the greatest extent; an observation space is left at the frontal test collision of the device, which is convenient Observe the shape of the droplet collision; process the data of the droplet experiment in a timely and rapid manner to improve the efficiency of the experiment.

Description of drawings

A brief description of the content shown in the drawings and the marks in the drawings is as follows:

Fig. 1 is the structural representation of the utility model.

Labeled in the figure:

1. Metal frame, 2. Lifting platform, 3. High-precision injection pump, 4. Collision plate, 5. Pressure sensor, 6. Experimental support platform, 7. Water collection tray, 8. Experimental console, 9. Hair dryer, 10. Video recorder, 11. Clamping device, 12. Man-machine dialogue device, 13. Collision plate, 14. High-precision injection pump moving mechanism.

Detailed ways

Next, with reference to the accompanying drawings, through the description of the embodiments, the specific implementation of the utility model will be further described in detail, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solutions of the utility model .

The structure of the utility model as shown in Figure 1 is a test device for impacting the contact surface when a liquid falls, and is a set of test devices integrating droplet emission, signal acquisition and data analysis functions. It includes a metal frame 1 . The outermost metal frame 1 is a non-sealed rectangular parallelepiped frame structure with a door on one side. A space is left at the frontal experimental collision of the metal frame 1 to facilitate the observation of the droplet collision shape and the like. Therefore, on the back and two sides of the metal frame 1, a plurality of reinforcing connecting rods are also provided, while the front is not provided with reinforcing connecting rods for the convenience of observation.

The metal frame 1 can be a steel frame or an aluminum alloy frame. At the bottom of each column of the metal frame 1, rollers can be set to facilitate its movement.

In order to solve the problems existing in the prior art and overcome its defects, and realize the purpose of the invention to quickly and accurately obtain the experimental data of the impact of the liquid drop on the contact surface, the technical solution adopted by the utility model is as follows:

As shown in Figure 1, when the liquid of the utility model falls, the test device for the impact of the contact surface is provided with a lifting platform 2, and the lifting platform 2 adopts a connection structure that can move up and down to be fixed on the column of the metal frame 1; On the lifting platform 2 described above, a high-precision syringe pump 3 is set, and the high-precision syringe pump 3 is connected to the clamping device 11 through a syringe; a collision plate 4 is set in the metal frame 1 and below the lifting platform 2, The collision plate 4 is supported by the experimental support platform 6 below it.

Metal frame 1 lower center place can place experiment supporting platform 6. The lifting platform 2 of the high-precision syringe pump is placed on the metal frame 1, which can ensure that the liquid drops in a quantitative and uniform manner. The water drop launch function depends on the flexibility of the up and down adjustment of the lifting platform 2, and the function of conveniently adjusting the water drop launch device at any height is realized with a simple design. After the height adjustment of the lifting platform 2 meets the requirements, it can be fixed on the column by a locking device.

The high-precision syringe pump 3 placed on the lifting platform 2 can emit liquid droplets mechanically and regularly through the control of the control system, eliminating human interference to the greatest extent.

The test device of the utility model can measure the size of the impact force on the contact surface when the liquid falls, and the change of its shape, and can provide effective data support for the study of the impact force of the rain load on the building in civil engineering; it can also be used to analyze water droplets Mechanics influence in different occasions.

Using the above-mentioned technical scheme, it integrates the functions of droplet emission, signal acquisition and data analysis, and the experiment has a high degree of automation; by collecting the impact force and impact shape of water droplets on the collision surface, accurate and comprehensive experimental data can be obtained in real time; timely, Quickly process the data of the water drop experiment to improve the efficiency of the experiment; the simple structure can easily adjust the height of the water drop launching device, the shape of the collision plate, etc., completely simulating the natural state, and avoiding human subjectivity during the test to the greatest extent Factors that affect the experimental results.

The experimental device is provided with an experimental console 8, and the experimental console 8 is provided with an experimental data processor and a man-machine dialogue device 12.

The experimental data processor obtains accurate and comprehensive experimental data in real time by collecting signals such as the impact force and impact shape of water droplets on the collision surface; it processes the data of water drop experiments in a timely and rapid manner to improve experimental efficiency. The human-machine dialogue device 12 is a computer that can be networked, and can display experimental data and experimental results in time; experimenters can set and control the experimental process through the man-machine dialogue device 12 .

Various adjustments during the experiment, including the drive control of the high-precision syringe pump 3; the rotation and tilt motion control of the collision plate 4, can be realized by the computer and its software.

A pressure sensor 5 is arranged on the collision plate 4, and the pressure sensor 5 is connected with the experiment console 8 through a signal line.

The utility model first pays attention to the research on the impact force when the water drop falls. Therefore, a pressure sensor 5, which is a force sensor/piezoelectric sensor, is set on the experimental support platform 6 to collect the impact force signal generated when the droplet falls. The pressure sensor 5 is connected with the signal processing device through a wire, and the impact force is converted into an electrical signal and input to the signal processing device for analysis.

A rotary drive mechanism is set between the experimental support table 6 and the collision plate 4 to realize the rotary motion of the collision plate 4 on the horizontal plane; the rotary drive mechanism is connected to the experimental console 8 through a signal line.

The slewing drive mechanism can adopt a motor-driven gear transmission mechanism, or a motor-driven pulley and other mechanical transmission mechanisms.

The tilting drive mechanism of the collision plate is also provided on the rotary drive mechanism to realize the tilting motion of the collision plate 4 relative to the horizontal plane; the pressure sensor 5 is connected with the experimental console 8 through a signal line.

The above-mentioned mechanical transmission mechanisms such as gears and pulleys can also be used in the tilting drive mechanism of the collision plate.

On the experimental console 8, by driving the rotation of the collision disk 4 and adjusting the inclination angle of the collision disk 4, the inclination angle of the droplet colliding with the wall or the position of the collision can be changed to simulate the rain load that exists in real life on various structures of the house. The various effects produced by planes and slopes make it closer to the real environment and obtain effective experimental results.

Collision plate 13 is set in described collision plate 4; Described collision plate 13 is a plurality of pieces, and adopts different materials, different surface structures to make; Plate 4.

The collision plate 13 is placed in the collision plate 4 and can be replaced as required. Its materials are different in hardness, thickness, and surface roughness, and can be selected according to the actual application status. The results obtained must be different and more in line with the actual production and life.

On the ground below the experimental support platform 6, a water collecting tray 7 is set.

The water collecting tray 7 is used to collect the splashed water droplets during the experiment, so as to avoid water accumulation in the experiment site during the experiment and improve the sanitation environment of the experiment.

On the column of the metal frame 1, one or more blowers 9 are arranged, and the blowers 9 are connected with the experimental console 8 through signal lines.

What Fig. 1 shows is that blower 9 is set on one column; blower 9 can also be set on two, three, or all four columns. The blower 9 is controlled by the control system of the experimental console 8, simulating the impact of wind force on water droplets in production and real life. Wind power can be adjusted. The blowing direction of blower 9 also can be adjusted as required. Therefore, blower 9 is installed on the column by universal drive mechanism.

On the column of the metal frame 1, one or more image recorders 10 are arranged, and the image recorders 10 are connected with the experiment console 8 through signal lines.

The utility model also pays attention to the drop process and the shape change after the impact, so the following technical solutions are adopted:

As shown in FIG. 1 , the video recorder 10 is set on one column, and the video recorder 10 can also be set on two, three, or all four columns. The image recorder 10 is controlled by the control system of the experimental console 8, and records the morphological changes after the water drop falls and hits. For example, some liquids have different viscosities, and their shapes are different during the falling and impacting processes; the shape changes will also occur under the influence of wind. The shooting direction of the video recorder 10 can also be adjusted as required. Therefore, the image recorder 10 is installed on the column through the universal drive mechanism.

During the experiment, the operator can control and adjust the blower 9 and the video recorder 10 on the experiment console 8 as needed, all of which can be realized by the computer and its software. The control system of the experimental console 8 analyzes and processes the images to obtain the experimental results.

The high-precision syringe pump moving mechanism 14 is set on the lifting platform 2, and the high-precision syringe pump moving mechanism 14 is connected with the experimental console 8 through a signal line to realize the horizontal movement of the high-precision syringe pump 3 on the lifting platform 2 .

Under normal circumstances, the drop of water falls on the center of the collision plate 4, but sometimes, it may be required to fall on a position off the center of the collision plate 4, or even on the edge, which requires a high-precision syringe pump moving mechanism 14 to drive high-precision injection The pump 3 is moved horizontally until the water drop falls in place.

The utility model can also arrange noise-absorbing cotton around the outer periphery of the metal frame 1, which well avoids noise interference in the experiment process.

The biggest advantage of the utility model is that it can independently realize a whole set of droplet falling and collision processes by limiting the fixed space; it can also simulate different experimental environments to obtain more comprehensive experimental results.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned methods, as long as various insubstantial improvements are made by adopting the method concept and technical solutions of the utility model, or Directly applying the ideas and technical solutions of the utility model to other occasions without improvement is within the protection scope of the utility model.

Claims (10)

1. The utility model provides a test device that contact surface impacted when liquid falls, includes metal frame (1), its characterized in that: the test device is provided with a lifting platform (2), and the lifting platform (2) is fixed on an upright post of the metal frame (1) by adopting a connecting structure capable of moving up and down; a high-precision injection pump (3) is arranged on the lifting platform (2), and the high-precision injection pump (3) is connected with the clamping device (11) through a needle cylinder; and a collision disc (4) is arranged in the metal frame (1) and below the lifting platform (2), and the collision disc (4) is supported by an experiment supporting table (6) below the collision disc.

2. The apparatus for testing impact on a contact surface when a liquid falls according to claim 1, wherein: the experimental device is provided with an experimental console (8), and the experimental console (8) is provided with an experimental data processor and a man-machine dialogue device (12).

3. The apparatus for testing impact on a contact surface when a liquid falls according to claim 2, wherein: the collision disc (4) is provided with a pressure sensor (5), and the pressure sensor (5) is connected with an experiment console (8) through a signal line.

4. A test device for impact on a contact surface upon liquid falling according to claim 3, wherein: a rotary driving mechanism is arranged between the experiment supporting table (6) and the collision disc (4) to realize the rotary motion of the collision disc (4) on the horizontal plane; the rotary driving mechanism is connected with the experiment console (8) through a signal line.

5. The apparatus for testing impact on a contact surface when a liquid falls according to claim 4, wherein: the rotary driving mechanism is also provided with a collision disc tilting driving mechanism for realizing tilting motion of the collision disc (4) relative to the horizontal plane.

6. The apparatus for testing impact on a contact surface when a liquid falls according to claim 1, wherein: a collision plate (13) is arranged in the collision plate (4); the collision plate (13) is made of multiple pieces and is made of different materials and different surface structures; in the state of the experiment, one of the pieces is selected and placed in the collision tray (4).

7. The apparatus for testing impact on a contact surface when a liquid falls according to claim 1, wherein: and a water collecting disc (7) is arranged on the ground below the experiment supporting table (6).

8. The apparatus for testing impact on a contact surface when a liquid falls according to claim 2, wherein: one or more blowers (9) are arranged on the upright posts of the metal frame (1), and the blowers (9) are connected with an experiment console (8) through signal lines.

9. The apparatus for testing impact on a contact surface when a liquid falls according to claim 2, wherein: one or more image recorders (10) are arranged on the upright posts of the metal frame (1), and the image recorders (10) are connected with the experiment console (8) through signal lines.

10. The apparatus for testing impact on a contact surface when a liquid falls according to claim 2, wherein: the lifting platform (2) is provided with a high-precision injection pump moving mechanism (14), and the high-precision injection pump moving mechanism (14) is connected with the experiment console (8) through a signal line to realize the horizontal movement of the high-precision injection pump (3) on the lifting platform (2).

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