Liquid sampling metering detection device

Abstract

The utility model provides a kind of liquid sampling measurement detection device, it is related to sampling measurement detection technical field, including sealing piston, the laser ranging sensor of the position of its position being detected is arranged in the one side of sealing piston, the sampling indicating buoy made of waterproof material is arranged in the other side of sealing piston.The utility model has the advantages that the position of sealing piston is adjusted using the change of internal air pressure of sampling tube, and the liquid is extracted to the inside of sampling tube using the air pressure change generated by the movement of sealing piston, so that the liquid entering the inside of sampling tube drives sampling indicating buoy to move, the position of sealing piston is detected using laser ranging sensor, and the interval between sealing piston and sampling indicating buoy is detected using deviation interval sensor, the difference between the two intervals can accurately judge the liquid volume of sampling, so as to more accurately sample and improve the accuracy of detection results.

Description

Technical Field

[0001] This utility model relates to the field of sampling, measurement and testing technology, and in particular to a liquid sampling, measurement and testing device. Background Technology

[0002] Liquid testing plays a crucial role in many fields, including environmental, food, and chemical industries. When analyzing liquids, metering devices are often required to quantitatively transfer the liquid, and the accuracy of these devices directly determines the accuracy of the analytical results. Liquid sampling and metering devices are used to collect and measure liquid samples. Due to their ease of operation, they are widely used in environmental monitoring, chemical production, food and beverage manufacturing, and pharmaceutical research and development.

[0003] However, existing liquid sampling and metering devices are not convenient for accurately determining the amount of liquid sampled when quantitatively sampling liquids, which can easily lead to deviations in the amount of liquid sampled and affect the test results. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a liquid sampling and metering detection device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a liquid sampling and metering detection device, including a sampling tube for sampling and containing liquid. One end of the sampling tube is equipped with a control module for electrical automation control. The control module is signal-connected to an air pump that regulates the internal air pressure of the sampling tube. A sealing piston is installed inside the sampling tube and moves within it. A laser rangefinder sensor is installed on one side of the sealing piston to detect its position. A sampling indicator buoy made of waterproof material is installed on the other side of the sealing piston. A deviation distance sensor is installed on one side of the sampling indicator buoy to detect its position. A cleaning pressure plate is fixedly installed in the middle of the sampling indicator buoy to seal it. A sealing film is fixedly installed in the middle of the cleaning pressure plate for sealing. A digital display screen for data display is fixedly installed at one end of the sampling tube.

[0006] Preferably, in any of the above embodiments, the sampling tube has an internal cavity for storing water samples, the top of the cavity has an air hole connected to an air pump, the bottom of the sampling tube has an inlet for extracting water samples, and the air pump is fixedly installed at the top of the sampling tube.

[0007] The above technical solution is as follows: the cavity inside the sampling tube is a space for storing liquid samples, the air hole at the top is connected to the air pump, which facilitates the air pump to adjust the air pressure inside the tube, and the liquid inlet at the bottom is the channel for the liquid to enter the sampling tube. The air pump is installed at the top of the sampling tube and is tightly connected to ensure the timeliness and stability of air pressure adjustment, providing the basic conditions for subsequent sampling operations.

[0008] Preferably, in any of the above embodiments, the laser rangefinder is fixedly installed at the top of the internal cavity of the sampling tube, and the laser rangefinder is signal-connected to the control module.

[0009] The above technical solution involves fixing a laser rangefinder at the top of the internal cavity of the sampling tube and connecting it to the control module. It can accurately measure the distance between itself and the sealing piston and transmit the data to the control module in real time. By monitoring the distance, the control module can obtain the position information of the sealing piston, thereby providing key data support for calculating the amount of sampled liquid and ensuring the accuracy of sampling measurement.

[0010] Preferably, in any of the above embodiments, the sealing piston is located inside the cavity of the sampling tube, between the laser rangefinder and the sampling indicator buoy, and a slot for engagement is provided in the middle of the sealing piston.

[0011] The above technical solution is adopted: the sealing piston is located inside the sampling tube cavity, between the laser rangefinder and the sampling indicator buoy. It has good sealing performance and can effectively isolate the air pressure in different areas of the sampling tube. The slot in the middle may be used to cooperate with other components to enhance its stability when moving in the tube. It also facilitates the interaction between the cleaning tablet and other components to achieve cleaning and sealing functions.

[0012] Preferably, in any of the above embodiments, the sampling indicator buoy is located inside the sampling tube cavity, and the sampling indicator buoy has a through hole in the middle for ventilation.

[0013] The above technical solution is adopted: the sampling indicator float is located inside the sampling tube cavity, and the through hole in the middle allows liquid to pass through, ensuring that it can move flexibly with changes in liquid volume. When liquid enters the sampling tube, it pushes the sampling indicator float up, and its position change can intuitively reflect the change in liquid volume, providing a reference for judging the sampling amount.

[0014] Preferably, in any of the above embodiments, the cleaning pressure plate includes a supporting connecting spring and a pressing plate for squeezing. The connecting spring is fixedly installed at the top of the sampling indicator buoy, and the pressing plate is fixedly installed at the top of the connecting spring. The sealing film is fixedly installed in the middle of the pressing plate, and the size of the sealing film is adapted to the through hole.

[0015] The above technical solution is adopted as follows: the connecting spring of the cleaning plate is installed at the top of the sampling indicator float to provide elastic support for the pressing plate. When the sealing piston squeezes the pressing plate, the connecting spring is compressed, the pressing plate moves downward, and the sealing film in the middle fits tightly with the through hole to achieve the sealing function. At the same time, during the movement of the sealing piston and the sampling indicator float, the cleaning plate can clean the inner wall of the sampling tube, reduce liquid residue, and improve the detection accuracy.

[0016] Preferably, in any of the above solutions, the digital display screen and the control module are connected by signals, and a protective cover is provided on one side of the digital display screen. The protective cover is rotatably connected to the inside of the sampling tube. One end of the protective cover is provided with an operating boss, and both ends of the boss are provided with elastic rubber pads for fastening.

[0017] The above technical solution is adopted: the digital display screen is connected to the control module to receive and display the sampling data processed by the control module, such as the amount of sampled liquid, which is convenient for operators to read. The sealing cover is rotatably connected inside the sampling tube, which can protect the digital display screen from external interference and damage. The protrusion at one end of the sealing cover facilitates operation of opening and closing, and the elastic rubber gaskets at both ends can play a role in fastening and sealing when closed, ensuring that the sealing cover is tightly closed.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] 1. An air pump is installed at one end of the liquid sampling tube to control the internal air pressure. A sealed piston is installed inside the liquid sampling tube. The position of the sealed piston is adjusted by the change in the internal air pressure of the sampling tube. The air pressure change generated by the movement of the sealed piston draws liquid into the sampling tube. The liquid entering the sampling tube drives the sampling indicator float to move. A laser rangefinder is used to detect the position of the sealed piston. At the same time, a deviation distance sensor is used to detect the distance between the sealed piston and the sampling indicator float. The difference between the two distances can be calculated to accurately determine the amount of liquid sampled, which facilitates more accurate sampling and improves the accuracy of the test results.

[0020] 2. A cleaning plate that can be repositioned is set in the middle of the sampling indicator buoy. After the sampling indicator buoy is sealed by the sealing piston, the pressure is increased to clean the end of the sampling tube. At the same time, the sealing piston and the sampling indicator buoy clean the inner wall of the sampling tube during the movement, reducing the residue of the sampling liquid and helping to further improve the accuracy of the test results.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of the sampling tube according to an embodiment of the present invention;

[0025] Figure 3 According to the embodiments of this utility model Figure 1 Enlarged structural diagram at point A;

[0026] Figure 4 According to the embodiments of this utility model Figure 2 Enlarged structural diagram at point B;

[0027] The components are: 1-sampling tube, 2-air pump, 3-sealed piston, 4-laser rangefinder, 5-sampling indicator buoy, 6-deviation gap sensor, 7-cleaning pressure plate, 71-connecting spring, 72-pressing plate, 8-sealing film, 9-digital display screen, 10-closed cover plate, 11-protrusion, 12-elastic pad, 13-through hole. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0029] like Figure 1-4 As shown, a liquid sampling and metering detection device according to an embodiment of the present invention includes a sampling tube 1 for sampling and containing liquid. One end of the sampling tube 1 is equipped with a control module for electrical automation control. The control module is signal-connected to an air pump 2 for regulating the internal air pressure of the sampling tube 1. A sealing piston 3 is installed inside the sampling tube 1 and moves therein. A laser rangefinder sensor 4 is installed on one side of the sealing piston 3 to detect its position. A sampling indicator float 5 made of waterproof material is installed on the other side of the sealing piston 3. A deviation distance sensor 6 is installed on one side of the sampling indicator float 5 to detect its position. A cleaning pressure plate 7 is fixedly installed in the middle of the sampling indicator float 5 to seal it. A sealing film 8 is fixedly installed in the middle of the cleaning pressure plate 7 to seal it. A digital display screen 9 for displaying data is fixedly installed at one end of the sampling tube 1.

[0030] Preferably, the sampling tube 1 has an internal cavity for storing water samples, an air hole connected to the air pump 2 at the top of the cavity, an inlet for extracting water samples at the bottom of the sampling tube 1, and the air pump 2 is fixedly installed at the top of the sampling tube 1.

[0031] The above technical solution is adopted: the cavity inside the sampling tube 1 is a space for storing liquid samples, the air hole at the top is connected to the air pump 2, which facilitates the air pump 2 to adjust the air pressure inside the tube, and the liquid inlet at the bottom is the channel for liquid to enter the sampling tube 1. The air pump 2 is installed at the top of the sampling tube 1 and is tightly connected to ensure the timeliness and stability of air pressure adjustment, providing basic conditions for subsequent sampling operations.

[0032] Preferably, in any of the above schemes, the laser rangefinder 4 is fixedly installed at the top of the internal cavity of the sampling tube 1, and the laser rangefinder 4 is connected to the control module via signal connection.

[0033] The above technical solution is adopted: the laser range sensor 4 is fixed at the top of the internal cavity of the sampling tube 1 and is connected to the control module. It can accurately measure the distance between itself and the sealing piston 3 and transmit the data to the control module in real time. By monitoring the distance, the control module can obtain the position information of the sealing piston 3, thereby providing key data support for calculating the amount of sampled liquid and ensuring the accuracy of sampling measurement.

[0034] Preferably, in any of the above schemes, the sealing piston 3 is located inside the cavity of the sampling tube 1, between the laser rangefinder 4 and the sampling indicator buoy 5, and a slot for engaging is provided in the middle of the sealing piston 3.

[0035] The above technical solution is adopted: the sealing piston 3 is located inside the cavity of the sampling tube 1, between the laser rangefinder 4 and the sampling indicator float 5. It has good sealing performance and can effectively isolate the air pressure in different areas inside the sampling tube 1. The slot in the middle may be used to cooperate with other components to enhance its stability when moving inside the tube. It also facilitates the interaction with components such as the cleaning pressure plate 7 to achieve cleaning and sealing functions.

[0036] Preferably, in any of the above schemes, the sampling indicator buoy 5 is located inside the cavity of the sampling tube 1, and the sampling indicator buoy 5 has a through hole 13 for ventilation in the middle.

[0037] The above technical solution is adopted: the sampling indicator float 5 is inside the cavity of the sampling tube 1, and the through hole 13 in the middle allows liquid to pass through, ensuring that it can move flexibly with the change of liquid volume. When the liquid enters the sampling tube 1, it pushes the sampling indicator float 5 to rise. Its position change can intuitively reflect the change of liquid volume and provide a reference for judging the sampling volume.

[0038] Preferably, the cleaning plate 7 includes a connecting spring 71 for support and a pressing plate 72 for squeezing. The connecting spring 71 is fixedly installed on the top of the sampling indicator float 5, and the pressing plate 72 is fixedly installed on the top of the connecting spring 71. The sealing film 8 is fixedly installed in the middle of the pressing plate 72, and the size of the sealing film 8 is compatible with that of the through hole 13.

[0039] The above technical solution is adopted: the connecting spring 71 of the cleaning pressure plate 7 is installed at the top of the sampling indicator float 5 to provide elastic support for the pressing plate 72. When the sealing piston 3 squeezes the pressing plate 72, the connecting spring 71 is compressed, the pressing plate 72 moves downward, and the sealing film 8 in the middle fits tightly with the through hole 13 to achieve the sealing function. At the same time, during the movement of the sealing piston 3 and the sampling indicator float 5, the cleaning pressure plate 7 can clean the inner wall of the sampling tube 1, reduce liquid residue, and improve the detection accuracy.

[0040] Preferably, in any of the above schemes, the digital display screen 9 is connected to the control module via signal connection. A protective cover plate 10 is provided on one side of the digital display screen 9. The protective cover plate 10 is rotatably connected to the inside of the sampling tube 1. One end of the protective cover plate 10 is provided with an operating boss 11, and both ends of the boss 11 are provided with elastic rubber pads 12 for fastening.

[0041] The above technical solution is adopted: the digital display screen 9 is connected to the control module signal, receives and displays the sampling data processed by the control module, such as the amount of sampled liquid, which is convenient for operators to read. The sealing cover 10 is rotatably connected inside the sampling tube 1, which can protect the digital display screen 9 from external interference and damage. The protrusion 11 at one end of the sealing cover 10 facilitates operation of opening and closing. The elastic rubber pads 12 at both ends can play a role in fastening and sealing when closed, ensuring that the sealing cover 10 is tightly closed.

[0042] The working principle of the liquid sampling and metering detection device of this utility model is as follows:

[0043] First, the air pump 2 is started by the control module. The operation of the air pump 2 changes the internal air pressure of the sampling tube 1, causing the sealing piston 3 to move inside the tube. When the internal air pressure decreases, the external liquid enters the sampling tube 1 through the liquid inlet under the action of atmospheric pressure, pushing the sampling indicator float 5 to rise. The laser range sensor 4 monitors the distance to the sealing piston 3 in real time and transmits the data to the control module. The deviation distance sensor 6 simultaneously detects the distance between the sealing piston 3 and the sampling indicator float 5 and transmits the data. The control module calculates the difference based on these two sets of data, thereby accurately determining the amount of sampled liquid, which is displayed on the digital display screen 9. When sampling is completed, the air pump 2 changes the air pressure, causing the sealing piston 3 to squeeze the cleaning plate 7. The connecting spring 71 is compressed, and the pressing plate 72 drives the sealing film 8 to block the through hole 13 of the sampling indicator float 5, increasing the pressure at the end of the sampling tube 1 and cleaning it. At the same time, the sealing piston 3 and the sampling indicator float 5 will also wipe the inner wall of the sampling tube 1 during the movement, reducing liquid residue.

[0044] Compared with the prior art, the present invention has the following advantages:

[0045] 1. An air pump 2 is installed at one end of the liquid sampling tube 1 to control the internal air pressure, and a sealing piston 3 is installed inside the liquid sampling tube 1. The position of the sealing piston 3 is adjusted by the change in the internal air pressure of the sampling tube 1, and the air pressure change generated by the movement of the sealing piston 3 draws the liquid into the sampling tube 1. The liquid entering the sampling tube 1 drives the sampling indicator float 5 to move. The position of the sealing piston 3 is detected by a laser range sensor 4, and the distance between the sealing piston 3 and the sampling indicator float 5 is detected by a deviation distance sensor 6. The difference between the two distances can be calculated to accurately determine the amount of liquid sampled, which facilitates more accurate sampling and improves the accuracy of the test results.

[0046] 2. A cleaning plate 7 that can change position is set in the middle of the sampling indicator float 5. After the sampling indicator float 5 is sealed by the sealing piston 3, the pressure is increased to clean the end of the sampling tube 1. At the same time, the sealing piston 3 and the sampling indicator float 5 clean the inner wall of the sampling tube 1 during the movement, reducing the residue of the sampling liquid, which is conducive to further improving the accuracy of the test results.

Claims

1. A liquid sampling and metering detection device, comprising a sampling tube (1) for sampling and containing liquid, wherein one end of the sampling tube (1) is provided with a control module for electrical automation control, and the control module is signal-connected to an air pump (2) for regulating the internal air pressure of the sampling tube (1), characterized in that: The sampling tube (1) is equipped with a sealing piston (3) that moves inside it. A laser rangefinder (4) is provided on one side of the sealing piston (3) to detect its position. A sampling indicator buoy (5) made of waterproof material is provided on the other side of the sealing piston (3). A deviation distance sensor (6) is provided on one side of the sampling indicator buoy (5) to detect its position. A cleaning pressure plate (7) is fixedly installed in the middle of the sampling indicator buoy (5) to seal it. A sealing film (8) is fixedly installed in the middle of the cleaning pressure plate (7) to seal it. A digital display screen (9) for displaying data is fixedly installed at one end of the sampling tube (1).

2. The liquid sampling and metering detection device as described in claim 1, characterized in that: The sampling tube (1) has a cavity for storing water samples inside. The top of the cavity has an air hole that communicates with the air pump (2). The bottom of the sampling tube (1) has an inlet hole for extracting water samples. The air pump (2) is fixedly installed at the top of the sampling tube (1).

3. The liquid sampling and metering detection device as described in claim 2, characterized in that: The laser rangefinder (4) is fixedly installed at the top of the internal cavity of the sampling tube (1), and the laser rangefinder (4) is connected to the control module.

4. The liquid sampling and metering detection device as described in claim 3, characterized in that: The sealing piston (3) is located inside the cavity of the sampling tube (1). The sealing piston (3) is located between the laser rangefinder (4) and the sampling indicator buoy (5). The sealing piston (3) has a slot for engaging in the middle.

5. The liquid sampling and metering detection device as described in claim 4, characterized in that: The sampling indicator buoy (5) is located inside the cavity of the sampling tube (1), and a through hole (13) for ventilation is provided in the middle of the sampling indicator buoy (5).

6. The liquid sampling and metering detection device as described in claim 5, characterized in that: The cleaning pressure plate (7) includes a supporting connecting spring (71) and a pressing plate (72) for squeezing. The connecting spring (71) is fixedly installed on the top of the sampling indicator buoy (5). The pressing plate (72) is fixedly installed on the top of the connecting spring (71). The sealing film (8) is fixedly installed in the middle of the pressing plate (72). The size of the sealing film (8) and the through hole (13) are compatible.

7. The liquid sampling and metering detection device as described in claim 6, characterized in that: The digital display screen (9) is connected to the control module. A protective cover plate (10) is provided on one side of the digital display screen (9). The protective cover plate (10) is rotatably connected to the inside of the sampling tube (1). A boss (11) for operation is provided at one end of the protective cover plate (10). Elastic rubber pads (12) for fastening are provided at both ends of the boss (11).

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