Fully automatic liquid concentration measuring device

Abstract

This utility model discloses a fully automatic liquid concentration measuring device, relating to the field of liquid concentration measurement technology. The device includes a liquid tank, an ultrasonic transceiver assembly, and an automatic measuring assembly. The liquid tank holds the liquid to be tested. The ultrasonic transceiver assembly includes a support base, a piezoelectric transducer assembly, and a distance adjustment component. The support base is fixedly installed above the liquid tank, and the piezoelectric transducer assembly and the distance adjustment component are mounted on the support base. During testing, the automatic measuring assembly can cooperate with the ultrasonic transceiver assembly to change the relative positions of the ultrasonic transmitter and receiver. This allows the automatic measuring assembly to determine the liquid concentration based on changes in the ultrasonic signal, following a predetermined linear relationship between the ultrasonic wave propagation velocity in the solution and the solution concentration. This achieves automated detection of liquid concentration and automatically records experimental data, thereby effectively improving the efficiency of liquid concentration detection and enhancing the accuracy and reliability of the test results.

Description

Technical Field

[0001] This utility model relates to the field of liquid concentration measurement technology, and more specifically, to a fully automatic liquid concentration measurement device. Background Technology

[0002] Liquid concentration measurement is an important task in fields such as chemistry, water mist, and environmental monitoring, and it is also the basis for quality control and scientific decision-making.

[0003] Chinese utility model patent CN219532908U discloses a device for measuring the concentration of transparent liquid based on optical rotation. The device includes a laser source, a polarizer, a quartz cuvette, an analyzer, and a laser power meter, sequentially arranged on a stage. The laser source emits laser light; the polarizer processes the laser light to obtain a first polarized light; the quartz cuvette containing the transparent liquid processes the first polarized light to obtain optical rotation-rotated light. This device, based on the functional relationship between optical rotation and the concentration of the transparent solution, uses a laser source to pass through a transparent solution of unknown concentration, and uses a power meter to obtain the attenuated light intensity. This solves the problems of insufficient accuracy and high cost in existing optical methods for measuring the concentration of transparent solutions. However, the equipment and instruments required in the above technical solution are relatively complex, and the measurement process is cumbersome. It requires a darkroom environment and professional personnel for debugging, limiting its application in industrial production and exhibiting significant limitations in complex scenarios such as variable experimental conditions and small sample sizes.

[0004] Chinese utility model patent CN220356990U discloses an ultrasonic-based liquid concentration measuring device, including a top assembly, a bottom assembly, a wire cover assembly, and a cylinder. The wire cover assembly includes a rotating shaft and a rotating cap and wire cover connected to both ends of the rotating shaft. The top assembly includes a top shell and a transmitting transducer and a temperature sensor inserted into the bottom of the top shell, with the top shell detachably connected to the rotating cap. The bottom assembly includes a receiving transducer and a detachably connected bottom cover and bottom shell. This ultrasonic-based liquid concentration measuring device can detect the propagation speed of ultrasonic waves through transparent and non-transparent liquids at different temperatures. The rotating cap and wire cover are rotatably connected, allowing adjustment of the relative positions of the transmitting and receiving transducers, thereby improving the accuracy of the detection. While this technical solution can adjust the positions of the transmitting and receiving transducers and reduce liquid concentration measurement errors, its adjustable range is limited, and manual adjustment is required. Each adjustment necessitates re-testing, making the process cumbersome and impractical. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a fully automatic liquid concentration measuring device, so as to efficiently and accurately detect the concentration of the liquid to be measured and realize the automatic data acquisition while realizing the automated operation of the device.

[0006] To achieve the above objectives, this utility model provides a fully automatic liquid concentration measuring device, comprising:

[0007] A liquid tank for holding the liquid to be tested;

[0008] An ultrasonic transceiver assembly includes a support fixedly mounted above the liquid tank, a piezoelectric transducer assembly mounted on the support, and a distance adjustment component, wherein the piezoelectric transducer assembly adjusts the signal transmission distance via the distance adjustment component;

[0009] An automatic measurement component includes a base plate and a displacement drive module and a data acquisition and processing module mounted on the base plate. The displacement drive module is used to drive and adjust the distance adjustment component.

[0010] The piezoelectric transducer group emits ultrasonic waves that are reflected by the liquid solute medium and received by the automatic measurement component. The data acquisition and processing module processes the received signal to obtain the liquid concentration.

[0011] Furthermore, the piezoelectric transducer assembly includes an ultrasonic signal source for generating ultrasonic signals, an ultrasonic transmitter for emitting ultrasonic signals, an ultrasonic receiver for receiving ultrasonic signals, and an ultrasonic wire for transmitting ultrasonic signals. The ultrasonic receiver and the ultrasonic transmitter are respectively connected to the ultrasonic signal source through the ultrasonic wire.

[0012] Furthermore, the distance adjustment component includes a drive motor mounted on the outside of the bracket, a lead screw rotatably mounted on the bracket, an optical axis fixedly mounted on the bracket, and a sliding seat threaded through the lead screw. The lead screw is arranged horizontally parallel to the optical axis, and the sliding seat is slidably mounted through the optical axis. One end of the lead screw is driven to the output shaft of the drive motor, and the sliding seat is used to drive the ultrasonic receiver to move.

[0013] Furthermore, a first mounting plate is fixedly connected to one end of the support base along its length, and the ultrasonic transmitter is mounted on one end of the support base through the first mounting plate; a second mounting plate is installed at the bottom of the sliding seat, and the ultrasonic receiver is fixedly mounted on the sliding seat through the second mounting plate, with the ultrasonic transmitter and the ultrasonic receiver horizontally facing each other.

[0014] Furthermore, the displacement drive module includes a motor driver and a first microcontroller mounted on the base plate. The motor driver is used to regulate the operation of the drive motor, and the first microcontroller is electrically connected to the motor driver.

[0015] Furthermore, the data acquisition and processing module includes a second microcontroller, a display screen, and a switch. The display screen and the switch are electrically connected to the second microcontroller via data wires.

[0016] Furthermore, the second microcontroller is connected to the first microcontroller via a serial port.

[0017] Furthermore, both the ultrasonic receiver and the ultrasonic transmitter are located within the opening of the liquid tank, and the width of the inner wall of the liquid tank is greater than the width of the ultrasonic receiver and the ultrasonic transmitter.

[0018] Furthermore, both the ultrasonic receiver and the ultrasonic transmitter are equipped with a waterproof sealing structure.

[0019] Furthermore, a horizontally positioned scale is provided on one side of the support base in the width direction, and a scale indicator needle that is perpendicularly attached to the scale is fixedly connected to the top surface of the sliding base.

[0020] Compared with the prior art, this utility model has the following advantages and effects:

[0021] 1. In the fully automatic liquid concentration measuring device of this utility model, during detection, the automatic measuring component can cooperate with the ultrasonic transceiver component to change the relative position of the ultrasonic transmitter and the ultrasonic receiver, so that the automatic measuring component can obtain the liquid concentration according to the change data of the ultrasonic signal and the linear relationship between the ultrasonic wave propagation speed in the solution and the solution concentration according to a predetermined target. This realizes the automated detection of liquid concentration measurement and records the experimental data automatically, thereby effectively improving the efficiency of liquid concentration detection and enhancing the accuracy and reliability of the detection results.

[0022] 2. The fully automatic liquid concentration measuring device of this utility model has a simple structure and a clear principle. It adopts a modular design, with each functional unit independently packaged, resulting in a high degree of system integration and greatly improving the convenience of device maintenance and upgrades. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the fully automatic liquid concentration measuring device in this embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the main structure of the ultrasonic transceiver component of the fully automatic liquid concentration measuring device in this embodiment of the present invention;

[0025] Figure 3This is a top view of the automatic measurement component of the fully automatic liquid concentration measuring device in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Liquid tank;

[0028] 2-Ultrasonic transceiver assembly;

[0029] 21-Bracket base;

[0030] 22-Piezoelectric transducer assembly; 221-Ultrasonic receiver; 222-Ultrasonic transmitter; 223-Ultrasonic signal source;

[0031] 23-Distance adjustment component; 231-Drive motor; 232-Lead screw; 233-Sliding seat; 234-Optical axis; 235-Scale indicator needle;

[0032] 24 - Scale; 25 - First mounting plate; 26 - Second mounting plate;

[0033] 3-Automatic measurement components;

[0034] 31-Base plate;

[0035] 32-Displacement drive module; 321-Motor driver; 322-First microcontroller;

[0036] 33-Data acquisition and processing module; 331-Second microcontroller; 332-Display screen; 34-Switch. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] Please see Figure 1-3As shown, this utility model embodiment provides a fully automatic liquid concentration measuring device, which includes a liquid tank 1, an ultrasonic transceiver assembly 2, and an automatic measuring assembly 3, wherein:

[0040] Liquid tank 1 is used to hold the liquid to be tested.

[0041] The ultrasonic transceiver assembly 2 includes a support base 21, a piezoelectric transducer assembly 22, and a distance adjustment component 23. The support base 21 is fixedly installed above the liquid tank 1, and the piezoelectric transducer assembly 22 and the distance adjustment component 23 are installed on the support base 21. The piezoelectric transducer assembly 22 adjusts the signal transmission distance through the distance adjustment component 23.

[0042] Please see Figure 1-3 As shown, the piezoelectric transducer assembly 22 includes an ultrasonic signal source 223, an ultrasonic receiver 221, an ultrasonic transmitter 222, and an ultrasonic conductor, wherein:

[0043] An ultrasonic signal source 223 is used to generate ultrasonic signals, an ultrasonic transmitter 222 is used to emit ultrasonic signals, an ultrasonic receiver 221 is used to reflect and receive ultrasonic signals, and an ultrasonic wire is used to transmit ultrasonic signals. The ultrasonic receiver 221 and the ultrasonic transmitter 222 are respectively connected to the transmitter and receiver of the ultrasonic signal source 223 via ultrasonic wires. After the ultrasonic waves emitted by the ultrasonic transmitter 222 are transmitted to the ultrasonic receiver 221 through the liquid in the liquid tank 1, the ultrasonic receiver 221 can reflect the ultrasonic waves and receive the superimposed signal of the input and reflected waves.

[0044] Please see Figure 1-2 As shown, the distance adjustment component 23 includes a drive motor 231, a lead screw 232, an optical axis 234, and a sliding seat 233, wherein:

[0045] A drive motor 231 is fixedly mounted on a bracket 21. A lead screw 232 is mounted on the output end of the drive motor 231. An optical axis 234 is fixed inside the bracket 21 and is horizontally parallel to the lead screw 232. A sliding seat 233 is threaded onto the outside of the lead screw 232 and slidably connected to the optical axis 234. The sliding seat 233 is used to move the ultrasonic receiver 221. This allows the drive motor 231 to rotate the lead screw 232, thereby causing the sliding seat 233 to move along the length of the lead screw 232 and the optical axis 234, thus adjusting the relative position of the ultrasonic receiver 221 to the ultrasonic transmitter 222.

[0046] Please see Figure 1-2As shown, a first mounting plate 25 extending into the liquid tank 1 is fixedly connected to one end of the support base 21 along its length. The ultrasonic transmitter 222 is mounted on the support base 21 via the first mounting plate 25. A second mounting plate 26, horizontally aligned with the first mounting plate 25, is mounted on the bottom of the sliding seat 233. The second mounting plate 26 is used to mount the ultrasonic receiver 221. This allows the ultrasonic receiver 221 to move within the liquid tank 1 along with the second mounting plate 26 while keeping the ultrasonic transmitter 222 stationary.

[0047] Please see Figure 1 As shown, both the ultrasonic receiver 221 and the ultrasonic transmitter 222 are located within the opening of the liquid tank 1, and the width of the inner wall of the liquid tank 1 is greater than the width of the ultrasonic receiver 221 and the ultrasonic transmitter 222. The width of the liquid tank 1 allows the ultrasonic receiver 221 and the ultrasonic transmitter 222 to move within it. The liquid tank 1 is made of PVC material, which helps improve its corrosion resistance and extend its service life.

[0048] Please see Figure 1-2 As shown, both the ultrasonic receiver 221 and the ultrasonic transmitter 222 are equipped with waterproof sealing structures. This prevents the liquid in the liquid tank 1 from corroding the ultrasonic receiver 221 and the ultrasonic transmitter 222 when they are fully immersed in the liquid.

[0049] Please see Figure 1-2 As shown, a scale 24 is provided on one side of the support base 21 in the width direction, and a scale indicator 235 is fixedly connected to the top surface of the sliding base 233, which is perpendicular and tightly attached to the scale 24. The scale indicator 235 is made of steel sheet and has a structure that is pointed at the top and wide at the bottom, which makes it convenient for manual reading. By comparing the scale position of the scale indicator 235 on the sliding base 233 on the scale 24 before and after the ultrasonic receiver 221 moves, the moving distance of the ultrasonic receiver 221 can be obtained.

[0050] The automatic measurement component 3 includes a base plate 31, a displacement drive module 32, and a data acquisition and processing module 33. Both the displacement drive module 32 and the data acquisition and processing module 33 are mounted on the base plate 31. The displacement drive module 32 is used to drive the distance adjustment component 23 and record the moving distance of the ultrasonic receiver 221. The data acquisition and processing module 33 processes the data transmitted from the piezoelectric transducer group 22, thereby facilitating the determination of the liquid concentration based on the linear relationship between the propagation speed of ultrasonic waves in the solution and the solution concentration.

[0051] Please see Figure 1-3As shown, the displacement drive module 32 includes a motor driver 321 and a first microcontroller 322. The motor driver 321 is used to regulate the operation of the drive motor 231, and the first microcontroller 322 is electrically connected to the motor driver 321.

[0052] Please see Figure 1-3 As shown, the data acquisition and processing module 33 includes a second microcontroller 331, a display screen 332, a switch 34, and data cables, wherein:

[0053] The second microcontroller 331 is mounted on the base plate 31 and is used for data processing. The display screen 332 is mounted on the base plate 31 and is used to display the acquired information. The switch 34 is mounted on the base plate 31 and is used for start-up and shutdown control. The data cable is fixed to the second microcontroller 331 and electrically connected to the ultrasonic transmitter 222. This facilitates the second microcontroller 331 to acquire data information transmitted from the ultrasonic transmitter 222 using the data cable.

[0054] Please see Figure 1-3 As shown, the second microcontroller 331 is connected to the first microcontroller 322 via a serial port, and the two microcontrollers exchange data through the serial port. This facilitates the combination of monitoring data from the second microcontroller 331 and the first microcontroller 322, and allows the second microcontroller 331 to obtain the liquid concentration according to a predetermined functional relationship between wave velocity and liquid concentration after simple calculation.

[0055] The working process of the above-mentioned fully automatic liquid concentration measuring device is as follows:

[0056] When using this fully automatic liquid concentration measuring device, the liquid to be measured must first be placed in the liquid tank 1. After starting the automatic measuring component 3, the drive motor 231 can drive the lead screw 232 to rotate, so that the sliding seat 233 can move along the length direction of the lead screw 232 and the optical axis 234 as the lead screw 232 rotates, thereby realizing the position adjustment of the ultrasonic receiver 221, so as to change the distance between the ultrasonic transmitter 222 and the ultrasonic receiver 221, and make the ultrasonic receiver 221 move at a uniform speed and stably. During this process, the first microcontroller 322 can monitor the moving distance of the ultrasonic receiver 221.

[0057] The ultrasonic waves generated by the ultrasonic signal source 223 can be emitted from the ultrasonic transmitter 222. The ultrasonic receiver 221 can reflect the ultrasonic information and receive the superimposed signal of the input and reflection. When the ultrasonic transmitter 222 receives the ultrasonic signal, it can transmit the ultrasonic information to the second microcontroller 331. During operation, a standing wave can be formed when the distance between the ultrasonic transmitter 222 and the ultrasonic receiver 221 is an integer multiple of half the wavelength. The first microcontroller 322 can use the distance between adjacent standing waves to calculate the wavelength of the ultrasonic wave and obtain the propagation speed of the ultrasonic wave in the liquid. This allows the second microcontroller 331 to combine the predetermined wave velocity and liquid concentration function to obtain the liquid concentration. In addition, the second microcontroller 331 can also display the waveform and liquid concentration detection results on the display screen 332, making it convenient for users to query the detection data.

[0058] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A fully automatic liquid concentration measuring device, characterized in that, include: Liquid tank (1), the liquid tank (1) is used to hold the liquid to be tested; The ultrasonic transceiver assembly (2) includes a support base (21) fixedly installed above the liquid tank (1), a piezoelectric transducer assembly (22) and a distance adjustment component (23) installed on the support base (21), wherein the piezoelectric transducer assembly (22) adjusts the signal transmission distance through the distance adjustment component (23); The automatic measurement component (3) includes a base plate (31) and a displacement drive module (32) and a data acquisition and processing module (33) mounted on the base plate (31). The displacement drive module (32) is used to drive and adjust the distance adjustment component (23). The piezoelectric transducer group (22) emits ultrasonic waves that are reflected by the liquid solute medium and received by the automatic measurement component (3). The data acquisition and processing module (33) processes the received signal to obtain the liquid concentration.

2. The fully automatic liquid concentration measuring device according to claim 1, characterized in that, The piezoelectric transducer assembly (22) includes an ultrasonic signal source (223) for generating ultrasonic signals, an ultrasonic transmitter (222) for emitting ultrasonic signals, an ultrasonic receiver (221) for receiving ultrasonic signals, and an ultrasonic wire for transmitting ultrasonic signals. The ultrasonic receiver (221) and the ultrasonic transmitter (222) are respectively connected to the ultrasonic signal source (223) through the ultrasonic wire.

3. The fully automatic liquid concentration measuring device according to claim 2, characterized in that, The distance adjustment component (23) includes a drive motor (231) mounted on the outside of the bracket (21), a lead screw (232) rotatably mounted on the bracket (21), an optical axis (234) fixedly mounted on the bracket (21), and a sliding seat (233) threaded through the lead screw (232). The lead screw (232) is horizontally parallel to the optical axis (234), and the sliding seat (233) slides through the optical axis (234). One end of the lead screw (232) is driven to connect to the output shaft of the drive motor (231), and the sliding seat (233) is used to drive the ultrasonic receiver (221) to move.

4. The fully automatic liquid concentration measuring device according to claim 3, characterized in that, The support base (21) is fixedly connected to a first mounting plate (25) at one end along its length. The ultrasonic transmitter (222) is mounted on one end of the support base (21) via the first mounting plate (25). A second mounting plate (26) is mounted on the bottom of the sliding seat (233). The ultrasonic receiver (221) is fixedly mounted on the sliding seat (233) via the second mounting plate (26). The ultrasonic transmitter (222) and the ultrasonic receiver (221) are horizontally aligned.

5. The fully automatic liquid concentration measuring device according to claim 4, characterized in that, The displacement drive module (32) includes a motor driver (321) and a first microcontroller (322) mounted on the base plate (31). The motor driver (321) is used to adjust the operation of the drive motor (231), and the first microcontroller (322) is electrically connected to the motor driver (321).

6. The fully automatic liquid concentration measuring device according to claim 5, characterized in that, The data acquisition and processing module (33) includes a second microcontroller (331), a display screen (332), and a switch (34). The display screen (332) and the switch (34) are electrically connected to the second microcontroller (331) through data wires.

7. The fully automatic liquid concentration measuring device according to claim 6, characterized in that, The second microcontroller (331) is connected to the first microcontroller (322) via a serial port.

8. The fully automatic liquid concentration measuring device according to claim 2, characterized in that, The ultrasonic receiver (221) and the ultrasonic transmitter (222) are both located inside the opening of the liquid tank (1), and the width of the inner wall of the liquid tank (1) is greater than the width of the ultrasonic receiver (221) and the ultrasonic transmitter (222).

9. The fully automatic liquid concentration measuring device according to claim 2, characterized in that, Both the ultrasonic receiver (221) and the ultrasonic transmitter (222) are provided with a waterproof sealing structure.

10. The fully automatic liquid concentration measuring device according to claim 4, characterized in that, A horizontally arranged scale (24) is provided on one side of the support base (21) in the width direction, and a scale indicator needle (235) that is perpendicular to and in close contact with the scale (24) is fixedly connected to the top surface of the sliding base (233).

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