Liquid concentration meter

Abstract

The invention belongs to the technical field of liquid measurement, and particularly relates to a liquid concentration meter which comprises a spectrograph main body, a display screen is fixedly arranged on the spectrograph main body, a detection cavity is further formed in the spectrograph main body, and a gland is arranged on the spectrograph main body and located above the detection cavity. A middle body is fixedly arranged on the inner side of the detection cavity, a through hole is formed in the middle of the middle body, a magnetic suction rod is inserted into the inner side of the through hole, and a magnetic suction mechanism corresponding to the magnetic suction rod is arranged at the bottom of the inner side of the spectrograph main body; a bearing seat is fixedly mounted at the top of the magnetic rod, a bearing plate is fixedly arranged on the magnetic rod through the bearing seat, and sampling mechanisms are symmetrically arranged on the bearing plate; according to the device, the measured liquid which is easy to evaporate and hygroscopically can be greatly reduced to be in contact with the detection environment, so that the problem that the accuracy of detection data is influenced by the influence of the environment in the detection result of the measured liquid which is easy to evaporate and hygroscopically is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of liquid measurement technology, specifically a liquid concentration meter. Background Technology

[0002] A spectrometer liquid concentration meter is a precision instrument used to measure the concentration of liquids. Its core principle is based on spectral analysis technology. The spectrometer liquid concentration meter determines the concentration of a liquid by measuring the absorbance of each component in the solution to transmitted light and by using Bohr's law, which states that the absorbance is directly proportional to the concentration of the solute. Easily volatile liquids refer to liquids that are highly volatile and flammable at room temperature and can form flammable vapors in the air. Hygroscopic liquids have the ability to absorb moisture from the air. In high-humidity environments, they are more likely to interact with the humidity in the air because there is more moisture in the environment for them to absorb.

[0003] In the process of liquid concentration detection, for some volatile and hygroscopic liquids, the transfer and sampling of these liquids using sampling devices such as droppers can easily lead to direct exposure of these liquids to the external environment, thus affecting the accuracy of the liquid concentration measurement. Therefore, a liquid concentration meter is proposed to address the above problem. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a liquid concentration meter.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The liquid concentration meter of the present invention includes a spectrometer body, a display screen is fixedly installed on the spectrometer body, a detection cavity is also opened on the spectrometer body, a pressure cap is provided on the spectrometer body and above the detection cavity, an intermediate body is fixedly installed on the inner side of the detection cavity, a through hole is opened in the middle of the intermediate body, a magnetic suction rod is inserted into the inner side of the through hole, and a magnetic suction mechanism corresponding to the magnetic suction rod is provided at the bottom of the inner side of the spectrometer body; A receiving seat is fixedly installed on the top of the magnetic suction rod, and a receiving plate is fixedly installed on the magnetic suction rod through the receiving seat. Sampling mechanisms are symmetrically arranged on the receiving plate. The sampling mechanism includes a limiting frame integrally formed on the outer side of the receiving seat. A connecting component is provided on the limiting frame. A sealing cover is fixedly connected to the limiting frame through the connecting component. An elliptical glass column is fixedly installed on the top of the sealing cover. The elliptical glass column penetrates the sealing cover. A rubber sleeve is fitted on the outer side of the elliptical glass column. A connecting groove is opened on the top of the rubber sleeve. A connecting tube is inserted into the connecting groove. The top of the receiving seat is provided with a loading groove, and a detection and mating component is provided in the middle of the loading groove; A sealing seat is fixedly installed inside the loading slot and above the detection mating assembly. The sealing seat extends through to the outside of the receiving seat. A detection slot three is provided on the sealing seat. The detection slot three corresponds to the detection mating assembly. This device can significantly reduce the contact between easily evaporable and hygroscopic liquids and the detection environment, thereby greatly reducing the impact of environmental factors on the accuracy of the detection data.

[0006] Preferably, the top of the receiving seat is further provided with a sealing fitting component, which includes a sealing groove opened on the top of the receiving seat, and a sealing gasket is provided on the inner side of the sealing groove to ensure that the liquid being measured does not come into contact with the outside air during the sampling and transfer process, thereby ensuring the accuracy of the liquid concentration detection results.

[0007] Preferably, a sealing ring is fixedly installed at the bottom of the sealing cover, and the sealing ring is inserted into the sealing groove.

[0008] Preferably, the magnetic attraction mechanism includes a magnetic block fixedly installed on the bottom inner side of the spectrometer body. The top of the magnetic block has a cross-shaped slot, and the magnetic rod is inserted into the cross-shaped slot. The magnetic attraction method can greatly improve the convenience of the detection process and make it easier for users to use.

[0009] Preferably, the connecting component includes a long slot and a snap-fit ​​slot sequentially formed on the limiting frame, the long slot and the snap-fit ​​slot are connected, a snap-fit ​​rod is provided through the inner side of the long slot, a spring is fixedly connected to the snap-fit ​​rod, and the spring is fixedly connected to the limiting frame. A connecting frame is fixedly installed on the snap-fit ​​rod and located outside the limiting frame. The end of the connecting frame away from the snap-fit ​​rod is fixedly connected to the sealing cover, so that the spring maintains sufficient tension between the limiting frame and the snap-fit ​​rod. This allows the sealing cover to be automatically opened when the detection chamber is sealed, and also makes the sealing ring and sealing gasket fit more tightly, preventing leakage of the measured liquid during movement. This reduces the impact of temperature and humidity in the detection environment on the accuracy of liquid concentration detection, especially for volatile and hygroscopic liquids.

[0010] Preferably, the detection assembly includes a first detection slot opened inside the loading slot, a second detection slot opened on the receiving seat and located below the first detection slot, a transparent baffle fixedly provided at the bottom of the second detection slot, an installation slot opened at the bottom of the receiving seat, a lens snapped into the inner side of the installation slot, and the first detection slot and the second detection slot are connected.

[0011] Preferably, a cross groove is formed through the sealing seat, which is connected to the detection groove three. A plug plate is inserted into the inner side of the cross groove. An end block is fixedly installed at the end of the plug plate away from the detection groove three. Displacement rods are symmetrically installed on the end block and on the outer side of the plug plate. Displacement holes are symmetrically formed on the sealing seat. Nodes are symmetrically formed on the inner side of the displacement holes. The distance between two nodes on the same side is greater than the diameter of the detection groove three. The displacement rods are inserted into the displacement holes. The distance from one of the nodes in the sealing seat furthest from the end block to the detection groove three is greater than the diameter of the detection groove three, so that the end block drives the plug plate to move horizontally inside the cross groove. The displacement rod is connected to the sealing seat, which can effectively prevent the liquid being detected from flowing out of the detection groove one and the detection groove two during the movement.

[0012] Preferably, the end block is further provided with a rhomboid groove, and a push plate is provided on the rhomboid groove. A bending plate is fixedly installed at one end of the push plate, and a push column is fixedly installed at the other end of the push plate. The bending plate is inserted into the rhomboid groove, and the push column extends to the outside of the spectrometer body, so that the air inside is discharged through the vent hole, and the reserved cavity forms a negative pressure cavity, thereby allowing the liquid to be measured to enter the inside of the elliptical glass column through the connecting tube.

[0013] Preferably, a reserved cavity is provided between the elliptical glass column and the rubber sleeve, and a vent hole is provided on the elliptical glass column.

[0014] Preferably, a detection head is fixedly installed at the bottom of the inner side of the cap. The detection head corresponds to the connecting tube. The light beam passes through the liquid being detected and the lens, and the spectrum of the liquid being detected is displayed on the screen, thereby completing the concentration measurement of the liquid.

[0015] The advantages of this invention are: 1. This invention improves the accuracy of detecting volatile and hygroscopic liquids, and solves the problems of evaporation and dissolution during the detection of volatile and hygroscopic liquids. This device can significantly reduce the contact between volatile and hygroscopic liquids and the detection environment, thereby greatly reducing the impact of environmental factors on the accuracy of the detection data. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a cross-sectional view of the front structure of the present invention; Figure 4 This is a side view sectional diagram of the structure of the present invention; Figure 5 This is a schematic diagram of the magnetic attraction mechanism of the present invention; Figure 6 This is a schematic diagram of the sampling mechanism structure of the present invention. Figure 1 ; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point A in the middle; Figure 8 This is a schematic diagram of the elliptical glass cylinder structure of the present invention; Figure 9 This is a cross-sectional schematic diagram of the elliptical glass cylinder structure of the present invention; Figure 10 This is a schematic diagram of the sampling mechanism structure of the present invention. Figure 2 ; Figure 11 This is a schematic diagram of the internal structure of the receiving seat of the present invention; Figure 12 This is a cross-sectional schematic diagram of the receiving seat structure of the present invention; Figure 13 This is a schematic diagram of the sealing seat structure of the present invention; Figure 14 This is a cross-sectional schematic diagram of the sealing seat structure of the present invention; Figure 15 This is a schematic diagram of the receiving seat structure of the present invention.

[0018] In the diagram: 1. Spectrometer body; 2. Display screen; 3. Cover; 4. Detection chamber; 5. Intermediate body; 6. Magnetic block; 7. Magnetic rod; 8. Receiver; 9. Receiver plate; 10. Receiving seat; 11. Limiting frame; 12. Long groove; 13. Snap-fit ​​groove; 14. Snap-fit ​​rod; 15. Spring; 16. Connecting frame; 17. Sealing cover; 18. Elliptical glass column; 19. Rubber sleeve; 20. Reserved cavity; 21. Vent hole; 22. Connecting groove; 23. Connecting tube 24. Sealing ring; 25. Sealing groove; 26. Sealing gasket; 27. Loading groove; 28. Detection groove one; 29. ​​Detection groove two; 30. Mounting groove; 31. Lens; 32. Sealing seat; 33. Detection groove three; 34. Cross groove; 35. Insertion plate; 36. End block; 37. Rhomboid groove; 38. Push plate; 39. Bending plate; 40. Displacement rod; 41. Push column; 42. Detection head; 43. Transparent baffle; 44. Displacement hole; 45. Node. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Specific implementation examples are given below.

[0021] Please see Figure 1-15 As shown, a liquid concentration meter includes a spectrometer body 1, a display screen 2 fixedly mounted on the spectrometer body 1, a detection cavity 4 also opened on the spectrometer body 1, a pressure cover 3 is provided on the spectrometer body 1 and above the detection cavity 4, an intermediate body 5 is fixedly mounted on the inner side of the detection cavity 4, a through hole is opened in the middle of the intermediate body 5, a magnetic suction rod 7 is inserted into the inner side of the through hole, and a magnetic suction mechanism corresponding to the magnetic suction rod 7 is provided at the bottom of the inner side of the spectrometer body 1. A receiving seat 8 is fixedly installed on the top of the magnetic suction rod 7, and a receiving plate 9 is fixedly installed on the magnetic suction rod 7 through the receiving seat 8. Sampling mechanisms are symmetrically arranged on the receiving plate 9. The sampling mechanism includes a limiting frame 11 integrally formed on the outer side of the receiving seat 10. A connecting component is provided on the limiting frame 11. A sealing cover 17 is fixedly connected to the limiting frame 11 through the connecting component. An elliptical glass column 18 is fixedly installed on the top of the sealing cover 17. The elliptical glass column 18 penetrates the sealing cover 17. A rubber sleeve 19 is sleeved on the outer side of the elliptical glass column 18. A connecting groove 22 is opened on the top of the rubber sleeve 19. A connecting tube 23 is inserted into the connecting groove 22. The top of the receiving seat 10 is provided with a loading groove 27, and a detection mating component for liquid detection is provided in the middle of the loading groove 27. A sealing seat 32 is fixedly installed on the inner side of the loading slot 27 and above the detection mating assembly. The sealing seat 32 extends through to the outside of the receiving seat 10. A detection slot 33 is provided on the sealing seat 32, and the detection slot 33 corresponds to the detection mating assembly. During operation, first prepare the liquid to be measured, then open the pressure cap 3. The operator pulls the receiving plate 9 vertically upwards. As the operator moves the receiving plate 9, it moves the magnetic suction rod 7 along with it until they separate, thus separating the magnetic suction rod 7 from the magnetic suction mechanism. During this process, the spectrometer body 1 is stationary, and the magnetic suction mechanism is fixed to the spectrometer body 1. Therefore, the magnetic suction mechanism is also stationary, causing the magnetic suction rod 7 to disengage from the through hole in the middle of the intermediate body 5. Then, check the sealing performance between the receiving seat 10 and the sealing cap 17 to ensure sufficient sealing. After the sealing of the receiving seat 10 and the sealing cap 17 is checked, hold the magnetic rod 7 and align the connecting tube 23 with the bottle mouth containing the liquid to be measured. Then insert the connecting tube 23 into the bottle body and make contact with the liquid to be measured. Then press the rubber sleeve 19 with your finger. The air inside the reserved cavity 20 is expelled by pressing the rubber sleeve 19, and the reserved cavity 20 forms a negative pressure cavity, so that the liquid to be measured enters the inner side of the elliptical glass column 18 through the connecting tube 23. Meanwhile, the detection assembly is in communication with the elliptical glass column 18. As the liquid to be tested enters, the rubber sleeve 19 is released, allowing the liquid to pass through the elliptical glass column 18 and enter the detection assembly. During this process, the magnetic suction rod 7 is restored to a vertical position, allowing the liquid to fill the detection assembly. Then, the magnetic suction rod 7 is inserted back into the through hole in the middle of the intermediate body 5 until the bottom of the magnetic suction rod 7 is in contact with the magnetic suction mechanism. Then, the pressure cap 3 is closed, and the sealing cap 17 is opened inside the spectrometer body 1, and the concentration of the liquid is detected. This device can significantly reduce the contact between easily evaporable and hygroscopic liquids and the detection environment, thereby greatly reducing the impact of environmental factors on the accuracy of the detection data.

[0022] Furthermore, such as Figure 6 , Figure 10 and Figure 11As shown, a sealing assembly is also provided on the top of the receiving seat 10. The sealing assembly includes a sealing groove 25 opened on the top of the receiving seat 10, a sealing gasket 26 provided on the inner side of the sealing groove 25, and a sealing ring 24 fixedly installed on the bottom of the sealing cover 17. The sealing ring 24 is inserted into the sealing groove 25. During operation, by aligning the sealing ring 24 on the sealing cover 17 with the sealing groove 25 and pressing down the sealing cover 17, the sealing ring 24 is embedded into the sealing groove 25 and fits against the sealing gasket 26, thereby ensuring that the liquid being measured does not come into contact with the outside air during the sampling and transfer process, thus ensuring the accuracy of the liquid concentration detection results.

[0023] Furthermore, such as Figure 5 As shown, the magnetic attraction mechanism includes a magnetic block 6 fixedly installed on the bottom inner side of the spectrometer body 1. The top of the magnetic block 6 has a cross-shaped groove, and the magnetic rod 7 is inserted into the cross-shaped groove. When detecting the liquid to be measured, the magnetic rod 7 is inserted back into the through hole in the middle of the intermediate body 5 until the bottom of the magnetic rod 7 is in contact with the cross-shaped groove on the magnetic block 6. The magnetic rod 7 is made of metal, and the magnetic block 6 is a permanent magnet. The magnetic attraction method can greatly improve the convenience of the detection process and make it easier for users to use.

[0024] Furthermore, such as Figure 6 and Figure 7 As shown, the connecting component includes a long slot 12 and a snap-fit ​​slot 13 sequentially opened on the limiting frame 11. The long slot 12 and the snap-fit ​​slot 13 are connected. A snap-fit ​​rod 14 is provided through the inner side of the long slot 12. A spring 15 is fixedly connected to the snap-fit ​​rod 14. The spring 15 is fixedly connected to the limiting frame 11. A connecting frame 16 is fixedly installed on the snap-fit ​​rod 14 and located outside the limiting frame 11. The end of the connecting frame 16 away from the snap-fit ​​rod 14 is fixedly connected to the sealing cover 17. During operation, when the liquid to be tested enters the detection assembly, the sealing cover 17 is pressed horizontally, and the sealing ring 24 on the sealing cover 17 is brought into contact with the sealing gasket 26. Then, the snap-fit ​​rod 14 is moved down in the long groove 12 on the limiting frame 11. During the movement of the snap-fit ​​rod 14, the operator should try to keep the spring 15 under sufficient tension between the limiting frame 11 and the snap-fit ​​rod 14 so that the sealing cover 17 can be automatically opened in the sealed state of the detection chamber 4. This also makes the sealing ring 24 and the sealing gasket 26 fit more tightly, preventing the liquid being measured from leaking during the movement. The operator pulls the locking rod 14 outward, causing it to enter the inner side of the long groove 12 from the inner side of the locking groove 13. The locking rod 14 is then moved downward and locked inside the locking groove 13 at the tension matching position of the spring 15. The locking rod 14 causes the spring 15 to contract. Since one end of the spring 15 is fixed to the limiting frame 11, the locking rod 14 drives the connecting frame 16. The connecting frame 16 then drives the sealing cover 17 to generate a backward and downward pulling force. This exposes the detection assembly and the liquid being tested inside, thereby reducing the impact of temperature and humidity in the detection environment on the accuracy of liquid concentration detection when testing volatile and hygroscopic liquids.

[0025] Furthermore, such as Figure 11 and Figure 12 As shown, the detection assembly includes a detection slot 28 inside the loading slot 27 and a detection slot 29 on the receiving seat 10 below the detection slot 28. A transparent baffle 43 is fixedly installed at the bottom of the detection slot 29. An installation slot 30 is provided at the bottom of the receiving seat 10. A lens 31 is snapped into the inner side of the installation slot 30. The detection slot 28 and the detection slot 29 are connected. During operation, the detection slot 28 is in communication with the elliptical glass column 18. As the liquid to be tested enters the elliptical glass column 18, the rubber sleeve 19 is released, allowing the liquid to be measured to pass through the elliptical glass column 18 and enter the detection slot 28. During this process, the magnetic suction rod 7 is restored to a vertically upward state, and the liquid to be measured fills the detection slot 28 and the detection slot 29. The two sets of rubber sleeves 19 can be operated independently. Lens 31 is used in conjunction with the main body 1 of the spectrometer to detect the liquid being measured.

[0026] Furthermore, such as Figure 13 and Figure 14 As shown, a cross groove 34 is provided through the sealing seat 32, which is connected to the detection groove 33. A plug plate 35 is inserted into the inner side of the cross groove 34. An end block 36 is fixedly installed at the end of the plug plate 35 away from the detection groove 33. A displacement rod 40 is symmetrically installed on the end block 36 and on the outer side of the plug plate 35. A displacement hole 44 is symmetrically provided on the sealing seat 32. A node 45 is symmetrically provided on the inner side of the displacement hole 44. The distance between the nodes 45 on the same side is greater than the diameter of the detection groove 33. The displacement rod 40 is inserted into the displacement hole 44. The distance from one of the nodes 45 in the sealing seat 32 that is far from the end block 36 to the detection groove 33 is greater than the diameter of the detection groove 33; The end block 36 is also provided with a rhomboid groove 37, and a push plate 38 is provided on the rhomboid groove 37. A bent plate 39 is fixedly installed on one end of the push plate 38, and a push column 41 is fixedly installed on the other end of the push plate 38. The bent plate 39 is inserted into the rhomboid groove 37, and the push column 41 extends through to the outside of the spectrometer body 1. During operation, the liquid to be measured enters the detection tank 28 after passing through the elliptical glass column 18, and then the magnetic suction rod 7 is restored to the vertical upward state. The liquid to be measured fills the detection tank 28 and the detection tank 29. Then, by pushing the end block 36, the end block 36 drives the plug plate 35 to move horizontally inside the cross groove 34. The displacement rod 40 is connected to the sealing seat 32. This can effectively prevent the liquid to be measured from flowing out of the detection tank 28 and the detection tank 29 during the movement. The displacement rod 40 allows the sealing seat 32 and the end block 36 to fit together. After the displacement rod 40 is inserted into the displacement hole 44, it has sufficient length reserved inside the displacement hole 44. The displacement hole 44 is provided with two nodes 45, and the distance between the two nodes corresponds to the diameter of the detection groove 33. When it is necessary to seal the detection tank 28 through the plug plate 35, the operator pushes the displacement rod 40. The displacement rod 40 is held against the bottom of the displacement hole 44 through two nodes 45 inside the displacement hole 44. The operator can complete the sealing of the detection tank 28 by continuing to push, so that the liquid being tested will not flow out of the detection tank 28. When it is necessary to expose the test slot 28, the staff pulls the displacement rod 40 so that the displacement rod 40 abuts against a node 45 on the side closest to the end block 36, thus exposing the test slot 28. When it is necessary to pop open the sealing cover 17, the operator shakes and pushes the push plate 38. The push plate 38 causes the bending plate 39 to abut against the node 45 on the side away from the end block 36, so that the bending plate 39 separates from the oblique groove 37, thereby completing the pop-opening action between the sealing cover 17 and the receiving seat 10. On the other hand, after closing the pressure cap 3, the pressure cap 3 seals the detection chamber 4. After sealing, the operator pushes the push column 41 from the outside of the spectrometer body 1. The push column 41 moves the push plate 38 together. The push plate 38 causes the bending plate 39 to separate from the oblique groove 37. At the moment of separation, the locking rod 14 is locked inside the locking groove 13, causing the locking rod 14 to cause the spring 15 to contract. Since one end of the spring 15 is fixed on the limiting frame 11, the locking rod 14 causes the connecting frame 16 to be pulled backward and downward. Therefore, at the moment the bending plate 39 separates from the oblique groove 37, the sealing cover 17 is opened, exposing the detection groove 28 and the liquid being detected inside it.

[0027] Furthermore, such as Figure 8 and Figure 9 As shown, a reserved cavity 20 is reserved between the elliptical glass column 18 and the rubber sleeve 19, and a vent hole 21 is provided on the elliptical glass column 18. During operation, by pressing the rubber sleeve 19, the air inside the reserved cavity 20 is discharged through the vent hole 21 through the pressure of the rubber sleeve 19, and the reserved cavity 20 forms a negative pressure cavity, so that the liquid being measured enters the inner side of the elliptical glass column 18 through the connecting tube 23.

[0028] Furthermore, such as Figure 2 , Figure 3 and Figure 4 As shown, a detection head 42 is fixedly installed at the bottom of the inner side of the pressure cap 3, and the detection head 42 corresponds to the connecting tube 23. During operation, the main body of the spectrometer 1 controls the detection head 42 to generate a light beam. The light beam passes through the liquid being tested and the lens 31, and the spectrum of the liquid being tested is displayed on the display screen 2, thereby completing the concentration measurement of the liquid.

[0029] Working principle: First, prepare the liquid to be measured. Then, open the pressure cap 3 and pull the receiving plate 9 vertically upward. The receiving plate 9 moves the magnetic suction rod 7 together until the magnetic suction rod 7 separates from the magnetic suction block 6 and the magnetic suction rod 7 disengages from the through hole in the middle of the intermediate body 5. Then, check the sealing between the receiving seat 10 and the sealing cap 17 to ensure sufficient sealing. After the sealing between the receiving seat 10 and the sealing cap 17 is checked, hold the magnetic suction rod 7 and align the connecting tube 23 with the bottle mouth containing the liquid to be measured. Then, insert the connecting tube 23 into the bottle body and make contact with the liquid to be measured. Then, press the rubber sleeve 19 with your finger. The air inside the reserved cavity 20 is discharged through the vent hole 21 by pressing the rubber sleeve 19. The reserved cavity 20 forms a negative pressure cavity, so that the liquid to be measured enters the inner side of the elliptical glass column 18 through the connecting tube 23. Meanwhile, the detection tank 28 and the elliptical glass column 18 are in a connected state. As the liquid to be tested enters the elliptical glass column 18, the rubber sleeve 19 is released, allowing the liquid to be measured to pass through the elliptical glass column 18 and enter the detection tank 28. During this process, the magnetic suction rod 7 is restored to a vertically upward state, and the liquid to be measured fills the detection tank 28 and the second detection tank 29. Then, by pushing the end block 36, the end block 36 causes the insertion plate 35 to move horizontally inside the cross groove 34. The displacement rod 40 is connected to the sealing seat 32. Then, the magnetic suction rod 7 is inserted back into the through hole in the middle of the intermediate body 5 until the bottom of the magnetic suction rod 7 is in contact with the cross-shaped groove on the magnetic suction block 6. After contact, the operator pulls the push plate 38, causing the bent plate 39 on the push plate 38 to insert into the rhomboid groove 37. Then, the pressure cover 3 is closed, causing the pressure cover 3 to seal the detection chamber 4. After sealing, the operator pushes the push column 41 from the outside of the spectrometer body 1. 41 drives the push plate 38 to move together, and the push plate 38 drives the bending plate 39 to separate from the oblique groove 37. At the moment of separation, since the locking rod 14 is locked inside the locking groove 13, the locking rod 14 drives the spring 15 to contract. Since one end of the spring 15 is fixed on the limiting frame 11, the locking rod 14 drives the connecting frame 16. The connecting frame 16 drives the sealing cover 17 to generate a backward and downward pulling force. Therefore, at the moment the bending plate 39 separates from the oblique groove 37, the sealing cover 17 is opened, exposing the detection groove 28 and the liquid being tested inside it. Then, the light beam emitted by the detection head 42 cooperates with the lens 31 to display the spectrum of the liquid being tested on the display screen 2. This device can greatly reduce the contact between easily evaporable and hygroscopic liquids and the detection environment, thereby greatly reducing the impact of the environment on the accuracy of the detection data. In summary, this invention can significantly improve the accuracy of detecting volatile and hygroscopic liquids, solving the problems of evaporation and dissolution during the detection of volatile and hygroscopic liquids. This device can greatly reduce the contact between volatile and hygroscopic liquids and the detection environment, thereby significantly reducing the impact of environmental factors on the accuracy of the detection data.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A liquid concentration meter, comprising a spectrometer body (1), a display screen (2) fixedly mounted on the spectrometer body (1), a detection cavity (4) further provided on the spectrometer body (1), and a pressure cap (3) provided on the spectrometer body (1) and above the detection cavity (4), characterized in that: An intermediate body (5) is fixedly provided on the inner side of the detection cavity (4). A through hole is opened in the middle of the intermediate body (5). A magnetic suction rod (7) is inserted into the inner side of the through hole. A magnetic suction mechanism corresponding to the magnetic suction rod (7) is provided at the bottom of the inner side of the spectrometer body (1). A receiving seat (8) is fixedly installed on the top of the magnetic suction rod (7), and a receiving plate (9) is fixedly installed on the magnetic suction rod (7) through the receiving seat (8). Sampling mechanisms are symmetrically arranged on the receiving plate (9). The sampling mechanism includes a limiting frame (11) integrally formed on the outside of the receiving seat (10). A connecting component is provided on the limiting frame (11). A sealing cover (17) is fixedly connected to the limiting frame (11) through the connecting component. An elliptical glass column (18) is fixedly installed on the top of the sealing cover (17). The elliptical glass column (18) penetrates the sealing cover (17). A rubber sleeve (19) is provided on the outside of the elliptical glass column (18). A connecting groove (22) is provided on the top of the rubber sleeve (19). A connecting tube (23) is inserted into the connecting groove (22). The top of the receiving seat (10) is provided with a loading groove (27), and a detection and mating component is provided in the middle of the loading groove (27); A sealing seat (32) is fixedly installed on the inner side of the loading slot (27) and above the detection mating component. The sealing seat (32) extends through to the outside of the receiving seat (10). A detection slot three (33) is provided on the sealing seat (32), and the detection slot three (33) corresponds to the detection mating component.

2. A liquid concentration meter according to claim 1, characterized in that: The top of the receiving seat (10) is also provided with a sealing fitting assembly, which includes a sealing groove (25) opened on the top of the receiving seat (10), and a sealing gasket (26) is provided on the inner side of the sealing groove (25).

3. A liquid concentration meter according to claim 2, characterized in that: A sealing ring (24) is fixedly installed at the bottom of the sealing cover (17), and the sealing ring (24) is inserted into the sealing groove (25).

4. A liquid concentration meter according to claim 3, characterized in that: The magnetic attraction mechanism includes a magnetic block (6) fixedly installed on the bottom inner side of the spectrometer body (1). The top of the magnetic block (6) is provided with a cross-shaped slot, and the magnetic rod (7) is inserted into the cross-shaped slot.

5. A liquid concentration meter according to claim 4, characterized in that: The connecting component includes a long slot (12) and a snap-fit ​​slot (13) sequentially opened on the limiting frame (11). The long slot (12) is connected to the snap-fit ​​slot (13). A snap-fit ​​rod (14) is provided through the inner side of the long slot (12). A spring (15) is fixedly connected to the snap-fit ​​rod (14). The spring (15) is fixedly connected to the limiting frame (11). A connecting frame (16) is fixedly installed on the snap-fit ​​rod (14) and outside the limiting frame (11). The end of the connecting frame (16) away from the snap-fit ​​rod (14) is fixedly connected to the sealing cover (17).

6. A liquid concentration meter according to claim 5, characterized in that: The detection assembly includes a detection slot 1 (28) opened inside the loading slot (27), a detection slot 2 (29) opened on the receiving seat (10) and located below the detection slot 1 (28), a transparent baffle (43) is fixedly provided at the bottom of the detection slot 2 (29), an installation slot (30) is opened at the bottom of the receiving seat (10), a lens (31) is snapped into the inside of the installation slot (30), and the detection slot 1 (28) and the detection slot 2 (29) are connected.

7. A liquid concentration meter according to claim 6, characterized in that: A cross groove (34) is provided through the sealing seat (32). The cross groove (34) is connected to the detection groove (33). A plug plate (35) is inserted into the inner side of the cross groove (34). An end block (36) is fixedly installed at the end of the plug plate (35) away from the detection groove (33). A displacement rod (40) is symmetrically installed on the end block (36) and on the outer side of the plug plate (35). A displacement hole (44) is symmetrically provided on the sealing seat (32). A node (45) is symmetrically provided on the inner side of the displacement hole (44). The distance between two nodes (45) on the same side is greater than the diameter of the detection groove (33). The displacement rod (40) is inserted into the displacement hole (44). The distance from one of the nodes (45) of the sealing seat (32) away from the end block (36) to the detection groove three (33) is greater than the diameter of the detection groove three (33).

8. A liquid concentration meter according to claim 7, characterized in that: The end block (36) is also provided with a rhomboid groove (37), and a push plate (38) is provided on the rhomboid groove (37). A bending plate (39) is fixedly installed on one end of the push plate (38), and a push column (41) is fixedly installed on the other end of the push plate (38). The bending plate (39) is inserted into the rhomboid groove (37), and the push column (41) extends through to the outside of the spectrometer body (1).

9. A liquid concentration meter according to claim 6, characterized in that: A reserved cavity (20) is reserved between the elliptical glass column (18) and the rubber sleeve (19), and a vent hole (21) is provided on the elliptical glass column (18).

10. A liquid concentration meter according to claim 7, characterized in that: A detection head (42) is fixedly installed on the bottom of the inner side of the pressure cap (3), and the detection head (42) corresponds to the connecting pipe (23).

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