An analytical instrument steady state measurement device

Abstract

The utility model discloses an analytical instrument constant state measuring device, including the shell body and the controller of installing in its front side inside, and the left side inside of shell body is installed with the import pipe in -through, moreover the right side inside of shell body is installed with the export pipe in -through, the inside of shell body is provided with the constant temperature bin, and the inside installation of constant temperature bin has medium measuring bin, the top of medium measuring bin is installed with temperature detection subassembly, pressure detection subassembly, pressure control pipe and electrochemistry measuring pass from left to right in proper order, the temperature -controlled ring of the temperature control ring of medium measuring bin outside is installed in constant temperature bin. This analytical instrument constant state measuring device can guarantee that constant temperature bin is in constant temperature state, guarantees the pressure in medium measuring bin to be in constant pressure state, and then makes this analytical instrument constant state measuring device can provide constant state's response, test environment for detection, analytical instrument measuring unit, has improved instrument reliability, and further improved instrument measuring accuracy.

Description

Technical Field

[0001] This utility model relates to the field of constant-state measurement technology of analytical instruments, specifically to a constant-state measurement device for analytical instruments. Background Technology

[0002] Analytical instruments are needed for the detection of chemical wastewater, environmental water quality, etc. The measuring units inside the analytical instruments are used to measure the medium. However, the measuring units inside the analytical instruments on the market still have some problems when used, such as:

[0003] In testing and analysis instruments, it is generally believed that the accuracy and stability of the instrument are determined by the measurement principle and reagent formulation. However, in actual operation, it has been found that inconsistencies in data can occur when measuring the same liquid due to differences in the region and climate where the instrument is installed. It has also been found that the atmospheric pressure and temperature at which the instrument is located affect the consistency of the measuring device and the measured liquid. Therefore, in testing and analysis instruments, the measurement unit is affected by external factors, which can lead to a decrease in measurement accuracy, reduce the reliability of the instrument, and affect the judgment of the measured substance (medium). Therefore, we propose a constant-state measurement device for analytical instruments to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a constant-state measurement device for analytical instruments, in order to solve the problem mentioned in the background art that the air pressure and temperature of the measuring device on the market will affect the consistency of the measuring device and the measured liquid during use. Therefore, the measuring unit in the detection and analysis instrument will be affected by external factors, which will lead to a decrease in measurement accuracy, reduce the reliability of the instrument, and affect the judgment of the measured substance (medium).

[0005] To achieve the above objectives, this utility model provides the following technical solution: an analytical instrument constant-state measurement device, comprising an outer shell and a controller installed inside its front side, wherein an inlet pipe is installed through the inside of the left side of the outer shell, and an outlet pipe is installed through the inside of the right side of the outer shell. A constant temperature chamber is opened inside the outer shell, and a medium measurement chamber is installed inside the constant temperature chamber. A temperature detection component, a pressure detection component, a pressure control tube, and an electrochemical measurement path are installed sequentially from left to right above the medium measurement chamber. A temperature control ring is installed inside the constant temperature chamber and sleeved on the outside of the medium measurement chamber. A heating component and a semiconductor cooling chip are symmetrically installed on the inner side wall of the temperature control ring.

[0006] Preferably, the upper part of the pressure control tube is installed inside the housing, and a pressure control piston assembly is fitted and connected to the upper part of the pressure control tube. Furthermore, the upper part of the pressure control piston assembly is connected to the output end of an electric push rod installed inside the housing.

[0007] The above-described structure allows for effective control of the pressure within the media measurement chamber, meeting diverse usage requirements.

[0008] Preferably, optical measurement pathways for measuring the medium inside the medium measurement chamber are installed on both the left and right sides of the constant temperature chamber.

[0009] The above-described structure facilitates the application of various parameters and principles in the entire measuring device.

[0010] Preferably, both the inlet pipe and the outlet pipe are equipped with solenoid valves for isolating the medium from the outside. The lower part of the medium measuring chamber is connected to the right end of the inlet pipe, and the upper right side of the medium measuring chamber is connected to the left end of the outlet pipe.

[0011] With the above-described structure, the solenoid valve can effectively isolate the medium in the inlet and outlet pipes from the medium in the medium measurement chamber, facilitating subsequent pressure adjustment within the medium measurement chamber to maintain a constant pressure and avoid affecting the accuracy of subsequent measurements.

[0012] Preferably, a control rod is installed through the bottom surface of the medium measuring chamber, and auxiliary rods are symmetrically installed on the outside of the control rod located inside the medium measuring chamber. The control rod and auxiliary rods are hollow and interconnected. A fixed frame installed in the bottom surface of the constant temperature chamber is rotatably connected through the lower outer side of the control rod. The fixed frame is hollow, and flow holes are equally spaced on the outside of the control rod located inside the fixed frame. A flow tube that penetrates and connects to the right side of the outer shell is installed on the right side of the fixed frame.

[0013] With the above-mentioned structure, the fixed frame can deliver liquid into the control rod without affecting the rotation of the control rod.

[0014] Preferably, a first bearing ring assembly is rotatably mounted above the temperature control ring, and a transmission gear is mounted on the outer side of the temperature control ring.

[0015] The above structure facilitates the rotation of the temperature control ring on the bottom surface of the first bearing ring assembly.

[0016] Preferably, a threaded rod is installed in the constant temperature chamber at the rear of the medium measuring chamber, and a connecting frame is threadedly connected to the upper outer side of the threaded rod. The lower front end of the connecting frame is connected to the upper rear side of the first bearing ring assembly, and the rear side of the connecting frame is connected through a guide rod inside the outer shell.

[0017] With the above-mentioned structure, the connecting frame can drive the first load-bearing ring group to perform lifting and lowering operations together.

[0018] Preferably, a second bearing ring assembly is fixed below the connecting frame and sleeved on the outside of the threaded rod, and a hollow rotating column is rotatably installed below the second bearing ring assembly. A rotating gear is installed on the outside of the rotating column, and the rotating gear meshes with the transmission gear on the front side. The rotating column is sleeved on the outside of the threaded rod, and snap-fit ​​blocks are symmetrically installed on the inner sidewall of the rotating column.

[0019] With the above-mentioned structure, the hollow rotating column can rotate and rise and fall well on the outside of the threaded rod.

[0020] Preferably, the outer side of the threaded rod is symmetrically provided with snap-fit ​​grooves, and snap-fit ​​blocks are slidably connected inside the snap-fit ​​grooves.

[0021] With the above structure, the rotating rod rotates and drives the rotating column to rotate together, without affecting the lifting and lowering operation of the rotating column. This allows the rotating column to drive the rotating gear to rise and fall together, ensuring that the rotating gear is always engaged with the transmission gear that rises and falls together. This facilitates the transmission gear to drive the temperature control ring to rotate, allowing the temperature control ring to rise and fall simultaneously while rotating.

[0022] Preferably, the lower outer side of the control rod forms a transmission structure with the threaded rod on the rear side via a sprocket assembly.

[0023] The above structure allows the control rod to automatically rotate, thus automatically driving the threaded rod to rotate without the need for an additional power source, saving electricity and reducing maintenance costs.

[0024] Compared with the prior art, the beneficial effects of this utility model are: the constant-state measurement device of the analytical instrument can provide a constant-state reaction and testing environment for the measurement unit of the detection and analysis instrument, avoiding the influence of external factors on the measurement unit in the detection and analysis instrument, avoiding the influence on the judgment of the medium, and improving the reliability of the instrument. The specific details are as follows:

[0025] (1) The temperature of the medium is detected in real time by the temperature detection component. The use of the heating component and the semiconductor cooling chip can ensure that the constant temperature chamber is in a constant temperature state. At the same time, the pressure in the medium measurement chamber can be adjusted in real time by the pressure detection component and the pressure control piston component to ensure that the pressure in the medium measurement chamber is in a constant pressure state. Thus, the constant state measurement device of the analytical instrument can provide a constant reaction and testing environment for the measurement unit of the detection and analysis instrument, avoid the measurement unit in the detection and analysis instrument from being affected by external factors, avoid affecting the judgment of the medium, improve the reliability of the instrument, and further improve the measurement accuracy of the instrument.

[0026] (2) By using the fixed frame and the flow tube together, cold water and hot water from the outside can be injected into the control rod and the auxiliary rod. Later, by rotating the control rod and the auxiliary rod, the medium in the medium measurement chamber can be stirred to improve the uniformity of medium heating or cooling. The medium can also be further heated or cooled, which makes it easy to quickly adjust the medium to the set temperature and improve the measurement efficiency in the later stage.

[0027] (3) Furthermore, the connecting frame drives the rotating gear to descend and rotate at the same time, thereby driving the transmission gear and the temperature control ring to descend and rotate at the same time. This facilitates the adjustment of the heating and cooling positions of the heating components and semiconductor cooling chips in the temperature control ring, thereby enabling the temperature of the medium in the constant temperature chamber and the medium measurement chamber to be quickly controlled. The medium can be quickly adjusted to the set temperature, which facilitates further improvement of measurement efficiency. Attached Figure Description

[0028] Figure 1 This is a left-view stereoscopic structural diagram of the present invention;

[0029] Figure 2 This is a right-view three-dimensional structural diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the main cross-sectional structure of the outer shell of this utility model;

[0031] Figure 4 This is a schematic diagram of the left sectional view of the outer shell of this utility model;

[0032] Figure 5 This is a schematic diagram of the internal structure of the medium measurement chamber of this utility model;

[0033] Figure 6 This is a partial cross-sectional view of the control rod of this utility model;

[0034] Figure 7 This is a bottom view of the temperature control ring structure of this utility model;

[0035] Figure 8 This is a schematic diagram of the three-dimensional structure of the temperature control ring of this utility model;

[0036] Figure 9 This is a three-dimensional structural diagram of the connecting frame of this utility model;

[0037] Figure 10 This is a cross-sectional structural diagram of the connection between the connecting frame and the threaded rod of this utility model.

[0038] In the diagram: 1. Outer shell; 2. Controller; 3. Inlet pipe; 4. Outlet pipe; 5. Constant temperature chamber; 6. Medium measurement chamber; 7. Temperature detection assembly; 8. Pressure detection assembly; 9. Electrochemical measurement path; 10. Optical measurement path; 11. Pressure control pipe; 111. Pressure control piston assembly; 112. Electric push rod; 12. Adjustment rod; 121. Auxiliary rod; 122. Flow hole; 13. Threaded rod; 131. Snap-fit ​​groove; 14. Sprocket assembly; 15. Temperature control ring; 151. Heating assembly; 152. Transmission gear; 153. Semiconductor cooling chip; 16. First bearing ring assembly; 17. Connecting frame; 18. Fixing frame; 181. Flow pipe; 19. Rotating gear; 20. Second bearing ring assembly; 21. Rotating column; 211. Snap-fit ​​block; 22. Solenoid valve. Detailed Implementation

[0039] 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.

[0040] Please see Figures 1-10 The present invention provides the following technical solution:

[0041] Example 1: The constant-state measurement device for analytical instruments in this example provides a constant-state reaction and testing environment for the measurement unit of the detection and analysis instrument, avoiding the influence of external factors on the measurement unit and preventing interference with the judgment of the medium. This improves the reliability of the instrument and further enhances the measurement accuracy. See the appendix for details. Figures 1-3As shown, the device includes a housing 1 and a controller 2 installed inside its front side. An inlet pipe 3 is installed through the inside of the left side of the housing 1, and an outlet pipe 4 is installed through the inside of the right side of the housing 1. A constant temperature chamber 5 is opened inside the housing 1, and a medium measurement chamber 6 is installed inside the constant temperature chamber 5. A temperature detection component 7, a pressure detection component 8, a pressure control pipe 11, and an electrochemical measurement passage 9 are installed sequentially from left to right on the top of the medium measurement chamber 6. A temperature control ring 15 is installed inside the constant temperature chamber 5 and sleeved on the outside of the medium measurement chamber 6. A heating component 151 and a semiconductor are symmetrically installed on the inner wall of the temperature control ring 15. The cooling chip 153 and the pressure control tube 11 are installed inside the outer casing 1. The pressure control tube 11 is internally connected to the pressure control piston assembly 111. The upper part of the pressure control piston assembly 111 is connected to the output end of the electric push rod 112 installed inside the outer casing 1. Optical measurement channels 10 for measuring the medium in the medium measurement chamber 6 are installed on both the left and right sides of the constant temperature chamber 5. Solenoid valves 22 for isolating the medium from the outside are installed on the inlet pipe 3 and the outlet pipe 4. The lower part of the medium measurement chamber 6 is connected to the right end of the inlet pipe 3, and the upper right side of the medium measurement chamber 6 is connected to the left end of the outlet pipe 4.

[0042] First, the medium to be tested is introduced into the medium measuring chamber 6 through the inlet pipe 3. Then, the solenoid valve 22 on the inlet pipe 3 is closed, isolating the medium in the medium measuring chamber 6 from the outside environment. The temperature of the medium in the medium measuring chamber 6 is detected by the temperature detection component 7. Then, the heating component 151 and the semiconductor cooling chip 153 installed on the inner wall of the temperature control ring 15 in the constant temperature chamber 5 are used to adjust the medium to be tested in the medium measuring chamber 6 to the set temperature value, thereby ensuring a constant temperature. Next, the pressure of the medium in the medium measuring chamber 6 is detected by the pressure detection component 8. Then, the controller 2 starts the electric push rod 112 to drive the pressure control piston. Component 111 rises or falls within the pressure control tube 11, thereby adjusting the pressure within the medium measurement chamber 6 until the set pressure point is reached and maintained, thus ensuring a constant pressure state. The entire measuring device can then perform medium measurement operations under a constant-state reaction and testing environment, improving instrument reliability and further enhancing measurement accuracy. Simultaneously, this measuring device is equipped with multiple measurement interfaces, such as the electrochemical measurement path 9 and the optical measurement path 10, facilitating the application of various parameters and principles. Since this part is existing technology, it will not be described in detail here. Furthermore, this measuring device is not limited to liquid measurement; it can also be used for gaseous media.

[0043] Example 2: The constant-state measurement device of the analytical instrument in this example, based on Example 1, can quickly adjust the measured medium to the set temperature value without spending a long time, thus improving the measurement efficiency. See the appendix for details. Figures 3-6As shown, a control rod 12 is installed through the bottom surface of the medium measuring chamber 6, and auxiliary rods 121 are symmetrically installed on the outside of the control rod 12 located inside the medium measuring chamber 6. The control rod 12 and the auxiliary rods 121 are hollow and interconnected. A fixed frame 18 installed in the bottom surface of the constant temperature chamber 5 is rotatably connected through the lower outer side of the control rod 12. The fixed frame 18 is hollow, and flow holes 122 are equally spaced on the outside of the control rod 12 located inside the fixed frame 18. A flow tube 181 is installed on the right side of the fixed frame 18 and is connected through the right side of the outer shell 1.

[0044] When the measured medium needs to be adjusted to the set temperature value, cold or hot water with a certain external temperature is injected into the fixed frame 18 through the flow pipe 181, and then flows into the hollow control rod 12 and auxiliary rod 121 through the flow hole 122. At the same time, the servo motor at the bottom of the control rod 12 is started, and the servo motor drives the control rod 12 and auxiliary rod 121 to reciprocate at a certain angle. This makes the medium in the medium measurement chamber 6 agitated when the control rod 12 and auxiliary rod 121 rotate, so that the medium in each area of ​​the medium measurement chamber 6 can be uniformly heated or cooled. At the same time, the heated or cooled water in the control rod 12 and auxiliary rod 121 can also further heat or cool the medium in the medium measurement chamber 6. With the use of the heating component 151 and the semiconductor cooling chip 153, the medium can be quickly adjusted to the set temperature, which can improve the measurement efficiency in the later stage.

[0045] Example 3: The constant-state measurement device of the analytical instrument in this example is based on Example 2, and is specifically described in the appendix. Figures 3-4 and appendix Figures 7-10 As shown, a first bearing ring assembly 16 is rotatably mounted above the temperature control ring 15, and a transmission gear 152 is mounted on the outer side of the temperature control ring 15. A threaded rod 13 is installed in the constant temperature chamber 5 behind the medium measuring chamber 6, and a connecting bracket 17 is threadedly connected to the upper outer side of the threaded rod 13. The lower front end of the connecting bracket 17 is connected to the upper rear side of the first bearing ring assembly 16, and the rear side of the connecting bracket 17 is connected through a guide rod inside the outer shell 1. A second bearing ring assembly 20 is fixed below the connecting bracket 17 and sleeved on the outer side of the threaded rod 13. A hollow rotating column 21 is rotatably mounted below component 20, and a rotating gear 19 is mounted on the outer side of the rotating column 21. The rotating gear 19 meshes with the transmission gear 152 on the front side. The rotating column 21 is sleeved on the outer side of the threaded rod 13, and a snap-fit ​​block 211 is symmetrically mounted on the inner side wall of the rotating column 21. A snap-fit ​​groove 131 is symmetrically opened on the outer side of the threaded rod 13, and the snap-fit ​​block 211 is slidably connected inside the snap-fit ​​groove 131. The lower outer side of the adjusting rod 12 forms a transmission structure with the threaded rod 13 on the rear side through the sprocket assembly 14.

[0046] When the regulating rod 12 reciprocates at a certain angle, the sprocket assembly 14 below it automatically drives the threaded rod 13 to reciprocate at a certain angle. When the threaded rod 13 rotates clockwise, it drives the connecting bracket 17 with the outer threaded connection to move downward. At this time, the connecting bracket 17 drives the first bearing ring assembly 16 and the second bearing ring assembly 20 to move downward together. The first bearing ring assembly 16 drives the temperature control ring 15 to move downward, and the second bearing ring assembly 20 drives the rotating column 21 to move downward. Since the locking block 211 on the inner side of the rotating column 21 is engaged and slidably connected with the locking groove 131, the rotation of the threaded rod 13 drives the rotating column 21 and the rotating gear 19 to rotate together. When the screw rod 13 rotates, it drives the transmission gear 152 and the temperature control ring 15 to rotate together, as shown above. Similarly, when the screw rod 13 rotates counterclockwise, it drives the temperature control ring 15 to move upward. This causes the temperature control ring 15 to rotate and reciprocate, which facilitates the adjustment of the position of the heating component 151 and the semiconductor cooling chip 153 installed inside the temperature control ring 15. This allows the heating component 151 and the semiconductor cooling chip 153 to uniformly heat or cool the outer periphery of the medium measurement chamber 6, thereby further and quickly regulating the temperature of the medium in the constant temperature chamber 5 and the medium measurement chamber 6. The medium can be quickly adjusted to the set temperature, which further improves the measurement efficiency and completes a series of tasks.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A constant-state measurement device for an analytical instrument, comprising a housing (1) and a controller (2) installed inside its front side, wherein an inlet pipe (3) is installed through the interior of the left side of the housing (1), and an outlet pipe (4) is installed through the interior of the right side of the housing (1), characterized in that: The outer shell (1) has a constant temperature chamber (5) inside, and a medium measurement chamber (6) is installed inside the constant temperature chamber (5). A temperature detection component (7), a pressure detection component (8), a pressure control tube (11) and an electrochemical measurement passage (9) are installed on the upper part of the medium measurement chamber (6) from left to right. A temperature control ring (15) is installed inside the constant temperature chamber (5) and is fitted on the outside of the medium measurement chamber (6). A heating component (151) and a semiconductor cooling chip (153) are symmetrically installed on the inner wall of the temperature control ring (15).

2. The analytical instrument constant-state measurement device according to claim 1, characterized in that: The upper part of the pressure control tube (11) is installed inside the outer casing (1), and the upper part of the pressure control tube (11) is fitted with a pressure control piston assembly (111), and the upper part of the pressure control piston assembly (111) is connected to the output end of the electric push rod (112) installed inside the outer casing (1).

3. The analytical instrument constant-state measurement device according to claim 1, characterized in that: Optical measurement pathways (10) for measuring the medium in the medium measurement chamber (6) are installed on both the left and right sides of the constant temperature chamber (5).

4. The analytical instrument constant-state measurement device according to claim 1, characterized in that: Both the inlet pipe (3) and the outlet pipe (4) are equipped with solenoid valves (22) for isolating the medium from the outside. The lower part of the medium measuring chamber (6) is connected to the right end of the inlet pipe (3), and the upper right side of the medium measuring chamber (6) is connected to the left end of the outlet pipe (4).

5. The analytical instrument constant-state measurement device according to claim 1, characterized in that: A control rod (12) is installed through the bottom surface of the medium measuring chamber (6), and auxiliary rods (121) are symmetrically installed on the outside of the control rod (12) located in the medium measuring chamber (6). The control rod (12) and the auxiliary rod (121) are hollow and interconnected. A fixed frame (18) installed in the bottom surface of the constant temperature chamber (5) is rotatably connected through the lower outer side of the control rod (12). The fixed frame (18) is hollow, and flow holes (122) are opened at equal intervals on the outside of the control rod (12) located in the fixed frame (18). A flow tube (181) is installed on the right side of the fixed frame (18) and is connected through the right side of the outer shell (1).

6. The analytical instrument constant-state measurement device according to claim 5, characterized in that: A first bearing ring assembly (16) is rotatably mounted above the temperature control ring (15), and a transmission gear (152) is mounted on the outside of the temperature control ring (15).

7. The analytical instrument constant-state measurement device according to claim 6, characterized in that: A threaded rod (13) is installed in the constant temperature chamber (5) behind the medium measuring chamber (6), and a connecting frame (17) is threadedly connected to the upper outer side of the threaded rod (13). The lower front end of the connecting frame (17) is connected to the upper rear side of the first bearing ring assembly (16), and the rear side of the connecting frame (17) is connected through to the guide rod inside the outer shell (1).

8. The analytical instrument constant-state measurement device according to claim 7, characterized in that: The connecting frame (17) is fixed with a second bearing ring assembly (20) sleeved on the outside of the threaded rod (13), and a hollow rotating column (21) is rotatably installed below the second bearing ring assembly (20). A rotating gear (19) is installed on the outside of the rotating column (21), and the rotating gear (19) meshes with the transmission gear (152) on the front side. The rotating column (21) is sleeved on the outside of the threaded rod (13), and a snap-fit ​​block (211) is symmetrically installed on the inner wall of the rotating column (21).

9. The analytical instrument constant-state measurement device according to claim 8, characterized in that: The threaded rod (13) has symmetrically provided snap-fit ​​grooves (131) on its outer side, and snap-fit ​​blocks (211) are engaged and slidably connected inside the snap-fit ​​grooves (131).

10. The analytical instrument constant-state measurement device according to claim 9, characterized in that: The lower outer side of the control rod (12) forms a transmission structure with the threaded rod (13) on the rear side through the sprocket assembly (14).

Images