Preheating device for water quality detection
By simultaneously preheating the sample solution and sample cell using a preheating device for water quality testing, the problem of atomization caused by the relatively cold sample solution is solved, ensuring the accuracy and efficiency of the test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-02
- Publication Date
- 2026-03-06
AI Technical Summary
In water quality testing, when the sample solution is too cold, it is prone to atomization, which affects the light transmission of the testing equipment, resulting in higher test results and complicated operation procedures.
Design a preheating device for water quality testing, including a preheating cylinder, a liquid storage component, and a heat-conducting component. The sample liquid and sample cell are preheated simultaneously by a heating plate and an electric heating coil, and heat is transferred by a spiral tube and a copper disk to ensure that the sample liquid and sample cell reach the appropriate temperature at the same time.
It shortens the preparation time before detection, avoids sample cell atomization and condensation, ensures the accuracy of optical detection results, and improves detection efficiency.
Smart Images
Figure CN223976963U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water quality testing preheating technology, and in particular to a preheating device for water quality testing. Background Technology
[0002] In the field of water quality testing, especially in tests such as turbidity and COD that rely on optical measurement or chemical reaction, if the sample liquid is too cold, it is easy for a large number of water droplets or atomization to form in the container (such as the sample pool) after the sample liquid enters the container. This will prevent the light emitted by the testing equipment from passing through the container, which will seriously hinder the light emitted by the testing equipment from penetrating the container, resulting in distortion of the optical measurement signal, and thus the potential for higher test results, affecting the reliability of the test data.
[0003] Traditional preheating methods mainly involve heating the sample solution separately, that is, heating the sample solution to a suitable temperature before pouring it into a glass sample container. However, when the warm sample solution comes into contact with the relatively cold glass container, fog is still easily generated on the inner wall of the container. Staff need to spend extra time wiping the fog off the inner wall of the container. The operation process is cumbersome, which not only prolongs the preparation time before testing, but also reduces the testing efficiency.
[0004] Therefore, it is necessary to provide a new preheating device for water quality testing to solve the above-mentioned technical problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a preheating device for water quality testing.
[0006] The water quality testing preheating device provided by this utility model includes a sample cell and a preheating cylinder for preheating the sample cell. The preheating cylinder is provided with a preheating component for heating the sample liquid and the sample cell, and the preheating cylinder is equipped with a liquid storage component and a heat conduction component distributed vertically.
[0007] The liquid storage component includes a spiral tube, which is fixedly installed inside the preheating cylinder by a bracket. The upper end of the spiral tube extends out of the top of the preheating cylinder and is fixedly installed with a liquid inlet hopper. The lower end of the spiral tube is fixedly installed with a discharge pipe.
[0008] The heat-conducting component includes a copper disk, on which a heat-conducting rod is fixedly mounted, and on which a supporting heat-conducting plate is fixedly mounted, with the sample cell located on the supporting heat-conducting plate.
[0009] Preferably, the liquid inlet hopper is equipped with a rotatably connected flip cover, and the flip cover is provided with an exhaust hole, and the discharge pipe is equipped with a discharge valve.
[0010] Preferably, the discharge pipe is located directly above the heat-conducting plate, and the distance between the discharge pipe and the heat-conducting plate is greater than the height of the sample cell by 1.2-2.5 cm.
[0011] Preferably, the preheating component includes a heating plate and a heating coil. The heating plate is fixedly fitted into the inner wall of the preheating cylinder, the heating coil is fixedly installed on the inner bottom wall of the preheating cylinder, and the copper disc is fixedly fitted into the heating coil.
[0012] The preheating component also includes a control panel, which is fixedly installed on the outer wall of the preheating cylinder and electrically connected to the heating plate and the heating coil via wires.
[0013] Preferably, the outer ring wall of the heat-conducting plate is provided with an inclined surface, and a number of metal air nozzles are fixedly installed on the inclined surface in a ring and arranged parallel to the inclined surface. A hot air fan is fixedly installed on the outer wall of the preheating cylinder, and the output end of the hot air fan is connected to an annular distribution pipe. The branch pipes on the annular distribution pipe are respectively connected to the air inlet of each metal air nozzle.
[0014] Preferably, the preheating cylinder is equipped with a rotating door that is rotatably connected, and the rotating door corresponds to the cylinder cavity between the material discharge pipe and the heat-conducting plate.
[0015] Compared with related technologies, the preheating device for water quality testing provided by this utility model has the following beneficial effects:
[0016] This invention uses a preheating component to heat the sample liquid in the storage component and the sample cell on the heat-conducting component simultaneously, achieving synchronous preheating of the sample liquid and the sample cell. While the sample liquid is preheating, the sample cell also reaches a suitable temperature, eliminating the need to wait for the sample cell to heat up. This shortens the overall preparation time before detection and improves detection efficiency. Furthermore, the design of synchronous preheating of the sample liquid and sample cell fundamentally eliminates the temperature difference problem caused by injecting low-temperature sample liquid into a cold sample cell, effectively avoiding the risk of fogging or condensation on the glass surface of the sample cell. This ensures that the light from the detection equipment can smoothly penetrate the sample cell, guaranteeing the accuracy of subsequent optical detection results and solving the core problem of overly high detection results due to fogging in traditional preheating methods. Attached Figure Description
[0017] Figure 1 A schematic diagram of a preferred embodiment of the preheating device for water quality testing provided by this utility model;
[0018] Figure 2 for Figure 1 A schematic diagram of the preheating cylinder in cross-section;
[0019] Figure 3 for Figure 2A cross-sectional view of the preheating cylinder shown.
[0020] Figure 4 for Figure 2 The diagram shows the structure of the liquid storage component.
[0021] Figure 5 for Figure 2 The diagram shows the structure of the heat-conducting component.
[0022] The following are labeled in the diagram: 1. Preheating cylinder; 11. Rotating door; 2. Preheating component; 21. Heating plate; 22. Heating coil; 23. Control panel; 3. Liquid storage component; 31. Spiral tube; 32. Liquid inlet hopper; 321. Flip cover; 33. Material discharge pipe; 331. Drain valve; 4. Heat-conducting component; 41. Copper plate; 42. Heat-conducting rod; 43. Supporting heat-conducting plate; 5. Metal nozzle; 51. Annular diverter pipe; 6. Hot air blower; 100. Sample cell. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0025] Please see Figures 1 to 5 This utility model provides a preheating device for water quality testing, which includes a preheating cylinder 1, a preheating component 2, a liquid storage component 3, and a heat-conducting component 4.
[0026] In the embodiments of this utility model, please refer to Figures 1 to 5 The preheating cylinder 1 is equipped with a preheating component 2 for heating the sample liquid and the sample cell 100. The preheating component 2 includes a heating plate 21 and an electric heating coil 22. The heating plate 21 is fixedly embedded in the inner wall of the preheating cylinder 1, and the electric heating coil 22 is fixedly installed on the inner bottom wall of the preheating cylinder 1. The preheating component 2 also includes a control panel 23, which is fixedly installed on the outer wall of the preheating cylinder 1 and is electrically connected to the heating plate 21 and the electric heating coil 22 through wires.
[0027] It should be noted that: when the heating plate 21 and the heating coil 22 are turned on, the heating plate 21 can heat the spiral tube 31 in the liquid storage component 3, and the heating coil 22 can preheat the copper plate 41.
[0028] It is worth noting that a sensor for detecting the temperature of the sample liquid and the temperature inside the preheating cylinder 1 is installed inside the preheating cylinder 1, and the sensor is electrically connected to the control panel 23 so that the control panel 23 can display the heating temperature value of the sample liquid and the temperature value inside the preheating cylinder 1.
[0029] In the embodiments of this utility model, please refer to Figures 1 to 5 The preheating cylinder 1 is equipped with a liquid storage component 3 and a heat conduction component 4 distributed vertically. The liquid storage component 3 includes a spiral tube 31. The spiral tube 31 is fixedly installed in the preheating cylinder 1 by a bracket. The upper end of the spiral tube 31 extends out of the top of the preheating cylinder 1 and is fixedly installed with a liquid inlet hopper 32. The lower end of the spiral tube 31 is fixedly installed with a discharge pipe 33. The liquid inlet hopper 32 is equipped with a rotatably connected flip cover 321, and the flip cover 321 is provided with an exhaust hole. The discharge pipe 33 is equipped with a drain valve 331.
[0030] The heat-conducting component 4 includes a copper disk 41, which is fixedly fitted onto the heating coil 22. A heat-conducting rod 42 is fixedly installed on the copper disk 41, and a supporting heat-conducting plate 43 is fixedly installed on the heat-conducting rod 42. The sample cell 100 is located on the supporting heat-conducting plate 43, and the discharge pipe 33 is located directly above the supporting heat-conducting plate 43. A rotating door 11 is installed on the preheating cylinder 1, and the rotating door 11 corresponds to the cylinder cavity between the discharge pipe 33 and the supporting heat-conducting plate 43.
[0031] It should be noted that: before performing turbidity detection on the sample liquid, the drain valve 331 is closed, the sample liquid is poured into the inlet hopper 32, so that the sample liquid enters the spiral tube 31 for storage, and at the same time the sample cell 100 is placed on the heat-conducting plate 43 and opposite to the inlet hopper 32.
[0032] Then, the rotating door 11 is closed, and the heating plate 21 and the heating coil 22 are turned on. At this time, the heating plate 21 can quickly preheat the sample liquid in the spiral tube 31. Since the spiral tube 31 increases the contact area with hot air, the preheating time of the sample liquid is greatly shortened. The heating coil 22 can heat the copper plate 41. The heated copper plate 41 transfers heat to the supporting heat-conducting plate 43 through the heat-conducting rod 42. Then, the supporting heat-conducting plate 43 conducts preheating of the sample cell 100. There is no need to wait for the sample cell 100 to heat up, which greatly shortens the preparation time before detection and effectively improves the overall detection efficiency.
[0033] After preheating is complete, the heating plate 21 and heating coil 22 are turned off, and then the drain valve 331 is opened to allow the preheated sample liquid to enter the preheated sample cell 100. This eliminates the possibility of fogging or condensation of water droplets on the glass surface of the sample cell 100 due to the low temperature of the sample liquid. The sample cell 100 is then placed in a laboratory turbidity detector for turbidity detection. This eliminates the potential risk of water droplets or fog interfering with the optical measurement accuracy and causing the results to be too high.
[0034] Therefore, this application heats the sample liquid in the storage component 3 and the sample cell 100 on the heat-conducting component 4 respectively by the preheating component 2, so as to realize the synchronous preheating of the sample liquid and the sample cell 100. When the sample liquid is preheated, the sample cell 100 also reaches the appropriate temperature. There is no need to wait for the sample cell 100 to heat up, which shortens the preparation time before the overall detection, improves the detection efficiency, and avoids the atomization problem caused by the injection of low temperature sample liquid into the sample cell 100, thus ensuring the accuracy of subsequent optical detection.
[0035] It is worth noting that if the sample liquid in the inlet hopper 32 cannot enter the spiral tube 31 due to air pressure, the drain valve 331 is slightly opened to balance the air pressure, so that the sample liquid enters the spiral tube 31 and approaches the discharge pipe 33, and then the drain valve 331 is closed again.
[0036] In this embodiment, the distance between the material discharge pipe 33 and the heat-conducting plate 43 is greater than the height of the sample cell 100 by 1.2-2.5 cm, which makes it convenient to place the sample cell 100 into the preheating cylinder 1 or to take the sample cell 100 out of the preheating cylinder 1.
[0037] In the embodiments of this utility model, please refer to Figures 1 to 5 The outer ring wall of the heat-conducting plate 43 is provided with an inclined surface, and several metal air nozzles 5 are fixedly installed on the inclined surface in a ring and arranged parallel to the inclined surface. A hot air fan 6 is fixedly installed on the outer wall of the preheating cylinder 1, and the output end of the hot air fan 6 is connected to an annular diversion pipe 51. The branch pipes on the annular diversion pipe 51 are respectively connected to the air inlet of each metal air nozzle 5.
[0038] It should be noted that turning on the hot air blower 6 can drive the metal air nozzle 5 to blow hot air onto the sample cell 100, forming a surrounding auxiliary heating. Combined with the heat-conducting plate 43, this further improves the preheating uniformity and efficiency of the sample cell 100. This application, through the design of synchronous preheating of the sample liquid and the sample cell 100, fundamentally eliminates the temperature difference problem caused by injecting low-temperature sample liquid into the cold sample cell 100, effectively avoids the hidden danger of fogging or condensation on the glass surface of the sample cell 100, ensures that the light of the detection equipment can smoothly penetrate the sample cell 100, guarantees the accuracy of subsequent optical detection results, and solves the core problem of high detection results caused by fogging in traditional preheating methods.
[0039] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A preheating device for water quality detection, comprising a sample cell (100) and a preheating cylinder (1) for preheating the sample cell (100), characterized in that, The preheating cylinder (1) is provided with a preheating component (2) for heating sample liquid and a sample cell (100), and the preheating cylinder (1) is provided with a liquid storage component (3) and a heat conduction component (4) arranged in an up-down manner; The liquid storage component (3) comprises a spiral pipe (31) fixedly installed in the preheating cylinder (1) through a support, and a liquid inlet hopper (32) is fixedly installed on the upper pipe opening of the spiral pipe (31) and extends out of the top of the preheating cylinder (1), and a material dropping pipe (33) is fixedly installed on the lower pipe opening of the spiral pipe (31). The heat conduction component (4) comprises a copper disc (41) on which a heat conduction rod (42) is fixedly installed, and a load-bearing heat conduction plate (43) is fixedly installed on the heat conduction rod (42), and the sample cell (100) is located on the load-bearing heat conduction plate (43).
2. The preheating device for water quality detection according to claim 1, characterized in that, The liquid inlet hopper (32) is provided with a rotationally connected flip cover (321) on which an exhaust hole is formed, and the material dropping pipe (33) is provided with a liquid discharge valve (331).
3. The preheating device for water quality detection according to claim 2, characterized in that, The material dropping pipe (33) is located directly above the load-bearing heat conduction plate (43), and the distance between the material dropping pipe (33) and the load-bearing heat conduction plate (43) is greater than 1.2-2.5 cm of the height of the sample cell (100).
4. The preheating device for water quality detection according to claim 1, characterized in that, The preheating component (2) comprises a heating plate (21) and an electric heating ring (22), the heating plate (21) is fixedly embedded on the inner ring wall of the preheating cylinder (1), the electric heating ring (22) is fixedly installed on the inner bottom wall of the preheating cylinder (1), and the copper disc (41) is fixedly embedded on the electric heating ring (22); The preheating component (2) further comprises a control panel (23) fixedly installed on the outer cylinder wall of the preheating cylinder (1), and the control panel (23) is electrically connected with the heating plate (21) and the electric heating ring (22) through wires.
5. The preheating device for water quality detection according to claim 1, characterized in that, The outer ring wall of the load-bearing heat conduction plate (43) is provided with a beveled surface on which a plurality of metal air nozzles (5) are fixedly installed in an annular arrangement and parallel to the beveled surface, the outer cylinder wall of the preheating cylinder (1) is fixedly provided with a hot air blower (6), and the output end of the hot air blower (6) is connected with an annular shunt pipe (51), and the branch pipes on the annular shunt pipe (51) are in communication with the gas inlets of the metal air nozzles (5), respectively.
6. The preheating device for water quality detection according to claim 3, characterized in that, The preheating cylinder (1) is provided with a rotationally connected rotating door (11), and the cylinder cavity between the rotating door (11) and the material dropping pipe (33) and the load-bearing heat conduction plate (43) corresponds to each other.