Alcohol concentration measuring device

Abstract

The utility model relates to the technical field of alcohol concentration detection, in particular to an alcohol concentration measuring device, which comprises a test box, a detection device and a control device, the cuvette adjusting assembly comprises a mounting table, a lifting mechanism and a clamping mechanism; the measuring assembly comprises a laser emitting mechanism, a plane mirror I, a plane mirror II and a light beam collecting mechanism; a plurality of plane mirrors are arranged to reflect a laser reflection light path, so that the moving distance of light spots on the photoresistor under different concentrations is effectively increased, the high-precision measurement of the alcohol concentration can be realized by using the photoresistor, and the manufacturing cost is low.

Description

Technical Field

[0001] This utility model relates to the field of alcohol concentration detection technology, specifically to an alcohol concentration measuring device. Background Technology

[0002] Alcohol measurement is of great importance in many fields. In the brewing industry, chemical production, and scientific research experiments, accurate measurement of alcohol concentration is a key link in ensuring product quality, controlling the production process, and ensuring the accuracy of experimental results. Currently, alcohol concentration is generally detected by directly contacting the alcohol sample with an alcohol meter or gas chromatograph. This contact measurement method is prone to introducing external contamination, and is not suitable, especially in laboratories that require a sterile or contactless environment.

[0003] To address the aforementioned issues, a non-contact alcohol concentration measuring device, disclosed in publication number "CN221945845U," comprises: a measuring box; a movable door installed on the outer wall of the measuring box; a sliding mechanism disposed inside the measuring box; and a stretching mechanism installed at the top of the sliding mechanism. The stretching mechanism includes a placement plate, an insertion slot, and a telescopic spring, with the placement plate fixedly connected to the outside of the top of the sliding mechanism. This invention, through the placement plate, insertion slot, telescopic spring, and stretching plate, allows for horizontal stretching of the stretching plate when a cuvette is placed outside the placement plate, thanks to the elastic extension and contraction between the stretching plate and the telescopic spring. This facilitates adjustment of the stretching plate's length to accommodate cuvettes of different sizes, increasing the convenience of cuvette storage and improving the functionality of the measuring device.

[0004] However, the aforementioned non-contact alcohol concentration measuring devices still have the following significant drawbacks when in use:

[0005] (1) Infrared emitted light does not deflect at a large angle after passing through the cuvette vertically. Therefore, direct measurement of the laser passing through the cuvette requires the assistance of a high-precision photodetector, which results in high production costs.

[0006] (2) When clamping the tilted cuvette, the cuvette is clamped by symmetrically arranged telescopic springs. Since the elasticity and restoring force of the springs may vary under different conditions, the cuvette may not stay in the same position accurately after each clamping, which will affect the test accuracy.

[0007] (3) The photodetector is fixedly connected in the test box, and cannot be replaced in time when the photodetector malfunctions or its performance deteriorates. Utility Model Content

[0008] The purpose of this invention is to provide an alcohol concentration measuring device to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An alcohol concentration measuring device, comprising:

[0011] Test chamber, the test chamber being equipped with cuvettes;

[0012] The measurement component includes a laser emitting mechanism, a first plane mirror, a second plane mirror, and a beam acquisition mechanism. The first plane mirror is tilted and positioned at one corner of the test chamber. The laser emitting mechanism emits a laser beam towards the first plane mirror. After being reflected by the first plane mirror, the laser beam enters the cuvette. After being refracted by the alcohol in the cuvette, the laser beam is reflected by the second plane mirror to the beam acquisition mechanism, which is used to acquire the position of the laser beam reflected by the second plane mirror.

[0013] The beam acquisition mechanism includes a photoresistor, a digital multimeter, a snap-fit ​​mechanism, and an adjustment mechanism. The photoresistor is disposed on one side of the test box, and the digital multimeter is connected in series with the photoresistor. When the laser reflected by the plane mirror illuminates different positions of the photoresistor, the resistance value of the photoresistor measured by the digital multimeter will change. The snap-fit ​​mechanism is used to snap the photoresistor in place, and the adjustment mechanism is used to adjust the position of the snap-fit ​​photoresistor.

[0014] Preferably, the adjustment mechanism includes an adjustment push rod disposed on the side wall of the test chamber, and the locking mechanism is disposed on the moving end of the adjustment push rod.

[0015] Preferably, the photoresistor is connected to a snap-fit ​​plate, and the snap-fit ​​mechanism includes a mounting plate, snap-fit ​​blocks, and snap-fit ​​springs. The mounting plate is disposed at the moving end of the adjusting push rod, and the mounting plate is provided with a plurality of snap-fit ​​blocks. The two ends of the snap-fit ​​spring are respectively connected to the mounting plate and the snap-fit ​​blocks.

[0016] Preferably, it further includes: a cuvette adjustment assembly, the cuvette adjustment assembly including a mounting platform, a lifting mechanism and a clamping mechanism, the mounting platform being disposed inside the test chamber, the lifting mechanism being used to adjust the height of the mounting platform, and the clamping mechanism being disposed on the mounting platform and used to clamp and fix the cuvette;

[0017] The cuvette has a cuboid structure. The clamping mechanism includes a fixed block, a movable block, a lead screw, a rotating rod, an air bladder, and a locking structure. The lead screw is connected to the fixed block, and the rotating rod is connected to the lead screw. Twisting the rotating rod causes the lead screw to rotate, which in turn causes the movable block to move closer to or away from the fixed block. Air bladders are provided on both the fixed block and the movable block. When the air bladder comes into contact with the side wall of the cuvette, it triggers the locking structure to open. The locking structure is used to lock the lead screw.

[0018] Preferably, the locking structure includes a pneumatic push rod, a return spring, and a locking block. The pneumatic push rod is connected to the airbag. When the airbag is compressed, the air in the airbag is squeezed into the pneumatic push rod. When the pneumatic push rod extends, it drives the locking block to lock the lead screw. The return spring is used to drive the pneumatic push rod to return to its original position.

[0019] Preferably, the lifting mechanism includes a lifting push rod, which is disposed inside the test box. The telescopic end of the lifting push rod is connected to the mounting platform, and the lifting push rod is used to adjust the height of the mounting platform.

[0020] Preferably, the laser emitting mechanism is a laser emitter, which is disposed on one side of the test box.

[0021] Preferably, the laser emitted by the laser emitter illuminates the plane mirror at an incident angle of 25°.

[0022] Preferably, the second plane mirror is positioned perpendicular to the laser emitted by the laser emitter.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] (1) By using this utility model, it is possible to achieve rapid, accurate and safe measurement of alcohol concentration without damaging the container's sealing performance, thus avoiding the risks of pollution, cross-infection or container breakage that may be caused by traditional contact measurement methods.

[0025] (2) By setting multiple plane mirrors to reflect the laser reflection path, the moving distance of the light spot on the photoresistor under different concentrations is effectively increased, so that the high-precision measurement of alcohol concentration can be achieved by using the photoresistor, and the manufacturing cost is low.

[0026] (3) By setting up the lifting mechanism and the clamping mechanism, it is ensured that the laser always irradiates the cuvette through the same irradiation position (including irradiation height and irradiation angle) whether it is vertically clamped or tilted, which effectively ensures the accuracy of the experimental results when measuring the alcohol concentration in different cuvettes.

[0027] (4) The photoresistor is installed by means of a snap-fit ​​mechanism, which can ensure that the photoresistor can be replaced in a timely and rapid manner when it fails or its performance degrades, thereby maintaining the stability and accuracy of the measuring device. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the axial view structure of the present invention. Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the axial view structure of the present invention. Figure 2 ;

[0030] Figure 3 This is a schematic diagram of the connection structure of each component of the cuvette adjustment assembly of this utility model;

[0031] Figure 4 This is a schematic diagram showing the position and structure of the pneumatic push rod, return spring, and locking block of this utility model;

[0032] Figure 5 This is a schematic diagram of the connection structure between the adjusting push rod and the mounting plate of this utility model;

[0033] Figure 6 This is a schematic diagram of the connection structure of the mounting plate, snap-fit ​​block, and snap-fit ​​spring of this utility model.

[0034] In the diagram: 1 Test box, 2 Cuvette, 3 Mounting platform, 4 Plane mirror one, 5 Plane mirror two, 6 Lifting push rod, 7 Fixed block, 8 Moving block, 9 Lead screw, 10 Rotating rod, 11 Airbag, 12 Pneumatic push rod, 13 Return spring, 14 Locking block, 15 Laser emitter, 16 Photoresistor, 17 Digital multimeter, 18 Adjusting push rod, 19 Snap-on plate, 20 Mounting plate, 21 Snap-on block, 22 Snap-on spring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figure 1-6 This utility model provides a technical solution:

[0037] An alcohol concentration measuring device, as per the instruction manual. Figure 1 As shown, it includes:

[0038] Test box 1, in this embodiment, is a wooden structure, which meets the usage requirements while having low manufacturing cost. Test box 1 is equipped with cuvette 2, in this embodiment, cuvette 2 is a sealed transparent container and has a square structure.

[0039] The cuvette adjustment assembly includes a mounting platform 3, a lifting mechanism, and a clamping mechanism. The mounting platform 3 is used to install the clamping mechanism and is located inside the test chamber 1. The lifting mechanism is used to adjust the height of the mounting platform 3. The clamping mechanism is located on the mounting platform 3 and is used to clamp and fix the cuvette 2.

[0040] The measurement component includes a laser emitting mechanism, a first plane mirror 4, a second plane mirror 5, and a beam acquisition mechanism. The first plane mirror 4 is tilted and set at one corner of the test chamber 1. The laser emitting mechanism is used to emit laser light into the first plane mirror 4. After being reflected by the first plane mirror 4, the laser light enters the cuvette 2. After being refracted by the alcohol in the cuvette 2, the laser light is reflected by the second plane mirror 5 and reaches the beam acquisition mechanism. The beam acquisition mechanism is used to acquire the position of the laser light reflected by the second plane mirror 5.

[0041] The lifting mechanism includes a lifting push rod 6. In this embodiment, the lifting push rod 6 is an electro-hydraulic push rod. By controlling the height of the lifting push rod 6, it can be adapted to cuvettes 2 of different sizes and heights, so that the laser can irradiate the cuvette 2 at a set height during the experiment. The lifting push rod 6 is set inside the test chamber 1, and the telescopic end of the lifting push rod 6 is fixedly connected to the mounting platform 3. The lifting push rod 6 is used to adjust the height of the mounting platform 3.

[0042] The clamping mechanism includes a fixed block 7, a movable block 8, a lead screw 9, a rotating rod 10, an airbag 11, and a locking structure. The fixed block 7 is fixedly connected to the mounting platform 3, the lead screw 9 is connected to the fixed block 7, and the rotating rod 10 is fixedly connected to one end of the lead screw 9. By turning the rotating rod 10, the lead screw 9 is rotated, which causes the movable block 8 to move closer to or away from the fixed block 7. An airbag 11 is provided on both the fixed block 7 and the movable block 8. The airbag 11 is used to provide uniform clamping force to flexibly clamp the cuvette 2. When the airbag 11 and the cuvette 2 come into contact with each other, the locking structure is triggered to open. The locking structure is used to lock the lead screw 9. The clamping of the fixed block 7 and the movable block 8 ensures that the laser irradiation is performed at the same angle each time.

[0043] The locking structure includes a pneumatic push rod 12, a return spring 13, and a locking block 14. Pneumatic push rods 12 are provided on both the fixed block 7 and the movable block 8. The pneumatic push rods 12 are connected to the airbag 11 through pipes. When the airbag 11 is compressed, the air in the airbag 11 is squeezed into the pneumatic push rod 12, thereby pushing the pneumatic push rod 12 to extend. The contact end between the locking block 14 and the lead screw 9 is made of rubber, which can effectively prevent the lead screw 9 from moving. When the pneumatic push rod 12 extends, it will drive the locking block 14 to lock the lead screw 9. The return spring 13 is used to drive the pneumatic push rod 12 to return to its original position.

[0044] The laser emitting mechanism is a laser emitter 15. The laser emitted by the laser emitter 15 is a red visible laser light with a wavelength of 650nm. The laser emitter 15 is located on one side of the test box 1.

[0045] The laser emitted by laser emitter 15 illuminates plane mirror 4 at an incident angle of 25°.

[0046] Plane mirror 25 is set perpendicular to the laser emitted by laser emitter 15.

[0047] The beam acquisition mechanism includes a photoresistor 16, a digital multimeter 17, a snap-fit ​​mechanism, and an adjustment mechanism. In this embodiment, the photoresistor 16 is a 12528 model photoresistor that is sensitive to visible light. The photoresistor 16 is fixedly installed on one side of the test box 1. The digital multimeter 17 is connected in series with the photoresistor 16. When the laser reflected by the plane mirror 5 irradiates different positions of the photoresistor 16, the resistance value of the photoresistor 16 measured by the digital multimeter 17 will change. When using the photoresistor, ensure that when the cuvette 2 is filled with pure water, the light spot received on the photoresistor 16 is completely illuminating the photoresistor 16, and one side of the laser spot coincides with the edge of the photoresistor 16. Multiple photoresistors can be tested before use, and the corresponding data of the adjustment lever 18 can be recorded. When replacing the photoresistor 16, simply adjust the length of the adjustment lever 18 according to the previously recorded data to achieve quick replacement. The snap-fit ​​mechanism is used to snap the photoresistor in place, and the adjustment mechanism is used to adjust the position of the snap-fit ​​photoresistor.

[0048] The adjustment mechanism includes an adjustment push rod 18, which is a DC electric push rod. During use, the position of the photoresistor 16 is adjusted by controlling the length of the adjustment push rod 18. The adjustment push rod 18 is located on the side wall of the test chamber 1, and the locking mechanism is located at the moving end of the adjustment push rod 18.

[0049] A photoresistor 16 is connected to a snap-fit ​​plate 19, which is fixed to the photoresistor 16 by adhesive. The snap-fit ​​mechanism includes a mounting plate 20, snap-fit ​​blocks 21, and snap-fit ​​springs 22. The mounting plate 20 is fixedly connected to the moving end of the adjusting push rod 18. The mounting plate 20 is used to install the snap-fit ​​blocks 21 and snap-fit ​​springs 22. The mounting plate 20 is provided with a number of snap-fit ​​blocks 21. In this embodiment, four snap-fit ​​blocks 21 are provided. The two ends of the snap-fit ​​springs 22 are fixedly connected to the mounting plate 20 and the snap-fit ​​blocks 21, respectively. The snap-fit ​​springs 22 are used to drive the snap-fit ​​blocks 21 to snap-fit ​​the snap-fit ​​plate 19.

[0050] Working principle: When in use, alcohol is stored in cuvette 2. The height of the lifting push rod 6 is set according to the size of cuvette 2. Then, the screw 9 is rotated by rotating rod 10, which drives the moving block 8 and the clamping block to clamp cuvette 2. When clamping is completed, the air bag 11 is squeezed, which causes the pneumatic push rod 12 to push the locking block 14 to lock the movement of the screw 9. When the laser spot shines on the surface of the photoresistor 16, the resistance of the photoresistor 16 will change. The data measured by digital multimeter 17 can be used to detect the alcohol concentration according to the correspondence between the resistance of the photoresistor 16 and the alcohol concentration.

[0051] Test box 1, in this embodiment, is a wooden structure, which meets the usage requirements while having low manufacturing cost. Test box 1 is equipped with cuvette 2, in this embodiment, cuvette 2 is a sealed transparent container and has a square structure.

[0052] The cuvette adjustment assembly includes a mounting platform 3, a lifting mechanism, and a clamping mechanism. The mounting platform 3 is used to install the clamping mechanism and is located inside the test chamber 1. The lifting mechanism is used to adjust the height of the mounting platform 3. The clamping mechanism is located on the mounting platform 3 and is used to clamp and fix the cuvette 2.

[0053] The measurement component includes a laser emitting mechanism, a first plane mirror 4, a second plane mirror 5, and a beam acquisition mechanism. The first plane mirror 4 is tilted and set at one corner of the test chamber 1. The laser emitting mechanism is used to emit laser light into the first plane mirror 4. After being reflected by the first plane mirror 4, the laser light enters the cuvette 2. After being refracted by the alcohol in the cuvette 2, the laser light is reflected by the second plane mirror 5 and reaches the beam acquisition mechanism. The beam acquisition mechanism is used to acquire the position of the laser light reflected by the second plane mirror 5.

[0054] The lifting mechanism includes a lifting push rod 6. In this embodiment, the lifting push rod 6 is an electro-hydraulic push rod. By controlling the height of the lifting push rod 6, it can be adapted to cuvettes 2 of different sizes and heights, so that the laser can irradiate the cuvette 2 at a set height during the experiment. The lifting push rod 6 is set inside the test chamber 1, and the telescopic end of the lifting push rod 6 is fixedly connected to the mounting platform 3. The lifting push rod 6 is used to adjust the height of the mounting platform 3.

[0055] The clamping mechanism includes a fixed block 7, a movable block 8, a lead screw 9, a rotating rod 10, an airbag 11, and a locking structure. The fixed block 7 is fixedly connected to the mounting platform 3, the lead screw 9 is connected to the fixed block 7, and the rotating rod 10 is fixedly connected to one end of the lead screw 9. By turning the rotating rod 10, the lead screw 9 is rotated, which causes the movable block 8 to move closer to or away from the fixed block 7. An airbag 11 is provided on both the fixed block 7 and the movable block 8. The airbag 11 is used to provide uniform clamping force to flexibly clamp the cuvette 2. When the airbag 11 and the cuvette 2 come into contact with each other, the locking structure is triggered to open. The locking structure is used to lock the lead screw 9. The clamping of the fixed block 7 and the movable block 8 ensures that the laser irradiation is performed at the same angle each time.

[0056] The locking structure includes a pneumatic push rod 12, a return spring 13, and a locking block 14. Pneumatic push rods 12 are provided on both the fixed block 7 and the movable block 8. The pneumatic push rods 12 are connected to the airbag 11 through pipes. When the airbag 11 is compressed, the air in the airbag 11 is squeezed into the pneumatic push rod 12, thereby pushing the pneumatic push rod 12 to extend. The contact end between the locking block 14 and the lead screw 9 is made of rubber, which can effectively prevent the lead screw 9 from moving. When the pneumatic push rod 12 extends, it will drive the locking block 14 to lock the lead screw 9. The return spring 13 is used to drive the pneumatic push rod 12 to return to its original position.

[0057] The laser emitting mechanism is a laser emitter 15. The laser emitted by the laser emitter 15 is a red visible laser light with a wavelength of 650nm. The laser emitter 15 is located on one side of the test box 1.

[0058] The laser emitted by laser emitter 15 illuminates plane mirror 4 at an incident angle of 25°.

[0059] Plane mirror 25 is set perpendicular to the laser emitted by laser emitter 15.

[0060] The beam acquisition mechanism includes a photoresistor 16 and a digital multimeter 17. In this embodiment, the photoresistor 16 is a 12528 model photoresistor sensitive to visible light. The photoresistor 16 is fixedly mounted on one side of the test chamber 1. The digital multimeter 17 is connected in series with the photoresistor 16. When the laser reflected by the plane mirror 5 illuminates different positions of the photoresistor 16, the resistance value of the photoresistor 16 measured by the digital multimeter 17 will change. During use, it is necessary to ensure that when the cuvette 2 is filled with pure water, the light spot received on the photoresistor 16 is completely illuminating the photoresistor 16, and one side of the laser spot coincides with the edge of the photoresistor 16.

[0061] Working principle: When in use, alcohol is stored in cuvette 2. The height of the lifting push rod 6 is set according to the size of cuvette 2. Then, the screw 9 is rotated by rotating rod 10, which drives the moving block 8 and the clamping block to clamp cuvette 2. When clamping is completed, the air bag 11 is squeezed, which causes the pneumatic push rod 12 to push the locking block 14 to lock the movement of the screw 9. When the laser spot shines on the surface of the photoresistor 16, the resistance of the photoresistor 16 will change. The data measured by digital multimeter 17 can be used to detect the alcohol concentration according to the correspondence between the resistance of the photoresistor 16 and the alcohol concentration.

[0062] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An alcohol concentration measuring device, characterized in that, include: Test chamber, the test chamber being equipped with cuvettes; The measurement component includes a laser emitting mechanism, a first plane mirror, a second plane mirror, and a beam acquisition mechanism. The first plane mirror is tilted and positioned at one corner of the test chamber. The laser emitting mechanism emits a laser beam towards the first plane mirror. After being reflected by the first plane mirror, the laser beam enters the cuvette. After being refracted by the alcohol in the cuvette, the laser beam is reflected by the second plane mirror to the beam acquisition mechanism, which is used to acquire the position of the laser beam reflected by the second plane mirror. The beam acquisition mechanism includes a photoresistor, a digital multimeter, a snap-fit ​​mechanism, and an adjustment mechanism. The photoresistor is disposed on one side of the test box, and the digital multimeter is connected in series with the photoresistor. When the laser reflected by the plane mirror illuminates different positions of the photoresistor, the resistance value of the photoresistor measured by the digital multimeter will change. The snap-fit ​​mechanism is used to snap the photoresistor in place, and the adjustment mechanism is used to adjust the position of the snap-fit ​​photoresistor.

2. The alcohol concentration measuring device according to claim 1, characterized in that: The adjustment mechanism includes an adjustment push rod, which is disposed on the side wall of the test chamber, and the locking mechanism is disposed on the moving end of the adjustment push rod.

3. The alcohol concentration measuring device according to claim 2, characterized in that: The photoresistor is connected to a snap-fit ​​plate. The snap-fit ​​mechanism includes a mounting plate, snap-fit ​​blocks, and snap-fit ​​springs. The mounting plate is located at the moving end of the adjusting push rod. The mounting plate is provided with a plurality of snap-fit ​​blocks. The two ends of the snap-fit ​​spring are respectively connected to the mounting plate and the snap-fit ​​blocks.

4. The alcohol concentration measuring device according to claim 1, characterized in that: Also includes: A cuvette adjustment assembly includes a mounting platform, a lifting mechanism, and a clamping mechanism. The mounting platform is disposed inside the test chamber. The lifting mechanism is used to adjust the height of the mounting platform. The clamping mechanism is disposed on the mounting platform and is used to clamp and fix the cuvette. The cuvette has a cuboid structure. The clamping mechanism includes a fixed block, a movable block, a lead screw, a rotating rod, an air bladder, and a locking structure. The lead screw is connected to the fixed block, and the rotating rod is connected to the lead screw. Twisting the rotating rod causes the lead screw to rotate, which in turn causes the movable block to move closer to or away from the fixed block. Air bladders are provided on both the fixed block and the movable block. When the air bladder comes into contact with the side wall of the cuvette, it triggers the locking structure to open. The locking structure is used to lock the lead screw.

5. The alcohol concentration measuring device according to claim 4, characterized in that: The locking structure includes a pneumatic push rod, a return spring, and a locking block. The pneumatic push rod is connected to the airbag. When the airbag is squeezed, the air in the airbag is squeezed into the pneumatic push rod. When the pneumatic push rod extends, it drives the locking block to lock the lead screw. The return spring is used to drive the pneumatic push rod to return to its original position.

6. The alcohol concentration measuring device according to claim 5, characterized in that: The lifting mechanism includes a lifting push rod, which is disposed inside the test box. The telescopic end of the lifting push rod is connected to the mounting platform, and the lifting push rod is used to adjust the height of the mounting platform.

7. An alcohol concentration measuring device according to claim 6, characterized in that: The laser emitting mechanism is a laser emitter, which is located on one side of the test box.

8. The alcohol concentration measuring device according to claim 7, characterized in that: The laser emitted by the laser emitter illuminates the plane mirror at an incident angle of 25°.

9. An alcohol concentration measuring device according to claim 8, characterized in that: The second plane mirror is positioned perpendicular to the laser emitted by the laser emitter.

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