Automatic evaporation device for dissolved sample

Abstract

The utility model discloses an automatic evaporation device for a dissolved sample. The automatic evaporation device comprises a mounting plate, an electric heating tube, a temperature sensor, a ventilation tube, a dispersion sheet, a cover frame and a controller, the ventilation pipe is connected to the bottom surface of the mounting plate, a plurality of air outlet holes are formed in the ventilation pipe at intervals, ventilation holes are formed in the mounting plate, and the number and the positions of the ventilation holes correspond to those of the air outlet holes; supporting feet are arranged on the mounting plate in the circumferential direction at intervals, and the electric heating tubes are mounted on the supporting feet. The dispersing sheet is mounted in the middle of the top surface of the mounting plate; the temperature sensor is mounted in the middle of the dispersing sheet; the cover frame is arranged outside the mounting plate in a covering manner; and the electric heating tube and the temperature sensor are electrically connected with the controller respectively. According to the utility model, the temperature can be monitored and controlled in real time, automatic heating can be realized, the dissolved sample evaporation deacidification effect is good, the working efficiency is high, and manual duty is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of rock and mineral detection equipment, in particular to an automatic evaporation device for rock and mineral dissolution samples. Background Art

[0002] In the analysis of rock and minerals, rock and minerals often need to be analyzed for composition, such as determining the content of a certain component. Pretreatment is required before rock and mineral analysis. The pretreatment steps often include sample weighing, sample dissolution, evaporation and acid removal, and constant volume. Sample dissolution and evaporation and acid removal are carried out in a fume hood. Sample dissolution generally uses strong acids such as hydrochloric acid, nitric acid, and hydrofluoric acid as solvents to dissolve the sample at a higher temperature. Evaporation and acid removal uses a heating method to evaporate the acid, and the evaporated acid vapor is all drawn away by the fume hood. When the acid liquid is about to evaporate, it is necessary to observe closely to see if there is no acid liquid in the tank and a semi-solidified paste is formed. Once there is no acid liquid and a semi-solidified paste is formed, evaporation must be stopped immediately. If evaporation continues, the material in the tank may be dried into powder, and the powder can be easily drawn away by the exhaust of the fume hood, or even the material in the tank may be directly burned, resulting in failure of evaporation and acid removal. During the evaporation and acid removal process, it cannot be overheated too quickly, otherwise it is easy to burn the sample, and the temperature cannot be too low. If it is too low, the evaporation and acid removal time will be too long and the efficiency will be very low.

[0003] At present, the evaporation and acid removal device for dissolved samples mainly adopts electric furnaces. The beaker containing the dissolved sample is placed on the furnace cover of the electric furnace for heating, and the temperature indication of the thermometer in the insulation furnace cover is manually observed. The temperature is controlled by manually controlling the power switch of the electric furnace. The manual control of the electric furnace requires very experienced operators to keep a close eye on the temperature of the thermometer and the state of the sample in the beaker in real time, and adjust the opening and closing of the electric furnace in time to maintain a suitable heating temperature. This method requires the operator to be on duty in real time, and it is easy to cause errors due to human factors. It is easy to have the phenomenon of temperature fluctuations or uneven temperature. Therefore, the temperature control accuracy of this dissolved sample evaporation and acid removal device is low, and it is more troublesome to use. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide an automatic evaporation device for dissolved samples, which can automatically heat, evaporate and remove acid, has high working efficiency and does not require manual supervision.

[0005] In order to achieve the above purpose, the following technical solutions are adopted:

[0006] An automatic evaporation device for dissolved samples, including a mounting plate, an electric heating tube, a temperature sensor, a ventilation tube, a dispersion sheet, a cover frame and a controller;

[0007] The ventilation duct is connected to the bottom surface of the mounting plate, the ventilation duct is provided with a plurality of air outlet holes at intervals, the mounting plate is provided with ventilation holes, and the number and positions of the ventilation holes correspond to the air outlet holes;

[0008] The mounting plate is provided with supporting feet at intervals in the circumferential direction, and the electric heating pipe is installed on the supporting feet;

[0009] The dispersion sheet is installed in the middle of the top surface of the installation plate, and the temperature sensor is installed in the middle of the dispersion sheet;

[0010] The cover is mounted outside the mounting plate;

[0011] The electric heating tube and the temperature sensor are electrically connected to the controller respectively.

[0012] Furthermore, the ventilation duct is connected to a fan, and the fan is electrically connected to a controller.

[0013] Furthermore, the height of the temperature sensor is flush with the height of the cover frame.

[0014] Furthermore, the electric heating tube is ring-shaped.

[0015] Furthermore, the end of the ventilation pipe is ring-shaped, and there are multiple air outlet holes, which are arranged at intervals on the end of the ventilation pipe.

[0016] Furthermore, a plurality of mounting holes are provided on the dispersion sheet, a gasket is provided between the dispersion sheet and the mounting plate, and the dispersion sheet is fixed to the mounting plate after screws pass through the mounting holes and the gasket.

[0017] Furthermore, the bottom surface of the dispersible tablet is an arc-shaped guiding structure which is thick in the middle and thin at the edges.

[0018] Furthermore, the cover frame includes a heat collecting cover located at the side and a supporting rib ring arranged on the top surface of the heat collecting cover.

[0019] Furthermore, the bottom surface of the mounting plate is provided with supporting feet.

[0020] Furthermore, the electric heating tube is a quartz glass electric heating tube.

[0021] Beneficial effects of the utility model:

[0022] 1. The temperature of the utility model can be monitored and controlled in real time, and the heating can be automatic. The evaporation and acid removal effect of the dissolved sample is good, the work efficiency is high, and no manual supervision is required.

[0023] 2. The utility model has a simple and compact structure, low cost and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2This is a schematic structural diagram of the utility model from another angle;

[0026] Figure 3 It is a schematic diagram of the exploded structure of the utility model;

[0027] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0028] Figure 5 It is a schematic diagram of multiple applications of the utility model.

[0029] Description of the accompanying symbols:

[0030] Mounting plate 1, supporting foot 11, ventilation hole 12, supporting foot 13, dispersion sheet mounting hole 14, electric heating tube 2, ventilation tube 3, air outlet 31, temperature sensor 4, cover frame 5, heat collecting cover 51, supporting rib ring 52, dispersion sheet 6, mounting hole 61, cushion cover 62. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] Example 1

[0033] refer to Figure 1-Figure 4 The automatic evaporation device for dissolved samples includes a mounting plate 1, an electric heating tube 2, a temperature sensor 4, a ventilation tube 3, a dispersion sheet 6, a cover frame 5 and a controller (not shown in the figure).

[0034] The ventilation pipe 3 is connected to the bottom surface of the mounting plate 1. The end of the ventilation pipe 3 is a ring shape. There are multiple air outlet holes 31, which are arranged at intervals on the end of the ventilation pipe 3. In addition, the ventilation pipe 3 is connected to a fan (not shown in the figure), and the fan is electrically connected to the controller. The mounting plate 1 is provided with ventilation holes 12, and the number and position of the ventilation holes 12 correspond to the air outlet holes 31.

[0035] The dispersion sheet 6 is installed in the middle of the top surface of the mounting plate 1. Specifically, a plurality of mounting holes 61 are provided on the dispersion sheet 6. A cushion sleeve 62 (to raise the height of the dispersion sheet 6) is provided between the dispersion sheet 6 and the mounting plate 1. The dispersion sheet 6 is fixed to the mounting plate 1 through the dispersion sheet mounting hole 14 after passing through the mounting hole 61 and the cushion sleeve 62 by screws. The bottom surface of the dispersion sheet 6 is an arc-shaped guide structure with a thick middle part and a thin edge. In this way, the wind in the ventilation pipe 3 enters through the ventilation hole 12 of the mounting plate 1 and is dispersed to the surroundings through the dispersion sheet 6. The arc-shaped guide structure is conducive to improving the dispersion uniformity of the incoming air.

[0036] Support legs 13 are provided at intervals on the mounting plate 1 in the circumferential direction, and the electric heating tube 2 is installed on the support legs 13; the electric heating tube 2 is a quartz glass electric heating tube 2. The electric heating tube 2 is a ring-shaped one.

[0037] The cover frame 5 is disposed outside the mounting plate 1. The cover frame 5 includes a heat collecting cover 51 located at the side and a supporting rib ring 52 disposed on the top surface of the heat collecting cover 51.

[0038] The temperature sensor 4 is installed in the middle of the dispersion sheet 6 ; the height of the temperature sensor 4 is flush with the height of the cover frame 5 or slightly higher than the cover frame 5 .

[0039] The electric heating tube 2 and the temperature sensor 4 are electrically connected to the controller respectively.

[0040] refer to Figure 5 The bottom surface of the mounting plate 1 is provided with a support leg 11. According to the use requirements and the size of the fume hood, multiple automatic evaporation devices can be placed on the fume hood table to perform simultaneous evaporation operations.

[0041] The utility model can control the temperature and duration according to different dissolving samples. The preset temperature and preset time of each stage of dissolving sample evaporation are input through the operation screen of the controller. The temperature is measured by the temperature sensor 4 and transmitted to the controller. Whether to heat is controlled by the controller. Specifically, the controller can control whether the electric heating tube 2 is heated through the AC contactor. Whether to ventilate and the size of ventilation are controlled by the controller. Specifically, the controller can control whether to ventilate and the size of ventilation by controlling the start and stop of the fan and the wind speed.

[0042] When in use, the following method can be used: the automatic evaporation device is first preheated to the preset preheating temperature, and then the beaker containing the quantitative dissolution sample is placed on the cover frame 5 for initial heating; after the initial heating is completed, cooling is performed, and air is introduced into the ventilation pipe 3, and the air intake mode is a preset large air volume intake; when the preset temperature control temperature is dropped, the ventilation pipe 3 is switched to a preset small air volume intake mode, and intermittent heating is performed at the preset temperature and time until the temperature control ends. The beaker leaves the cover frame 5, and the evaporation and acid removal is completed.

[0043] The temperature of the utility model can be monitored and controlled in real time, heating can be performed automatically, the evaporation and acid removal effect of the dissolved sample is good, the working efficiency is high and no manual supervision is required.

[0044] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. Automatic evaporation device for dissolved samples, characterized in that: It includes a mounting plate, an electric heating tube, a temperature sensor, a ventilation tube, a dispersion sheet, a cover frame and a controller; The ventilation duct is connected to the bottom surface of the mounting plate, the ventilation duct is provided with a plurality of air outlet holes at intervals, the mounting plate is provided with ventilation holes, and the number and positions of the ventilation holes correspond to the air outlet holes; The mounting plate is provided with supporting feet at intervals in the circumferential direction, and the electric heating pipe is installed on the supporting feet; The dispersion sheet is installed in the middle of the top surface of the installation plate, and the temperature sensor is installed in the middle of the dispersion sheet; The cover frame is arranged outside the mounting plate; The electric heating tube and the temperature sensor are electrically connected to the controller respectively.

2. The automatic evaporation device for dissolved samples according to claim 1, characterized in that: The ventilation duct is connected to the fan, and the fan is electrically connected to the controller.

3. The automatic evaporation device for dissolved samples according to claim 1, characterized in that: The height of the temperature sensor is flush with the height of the cover frame.

4. The automatic evaporation device for dissolved samples according to claim 1, characterized in that: The electric heating tube is in a ring shape.

5. The automatic evaporation device for dissolved samples as claimed in claim 4, characterized in that: The end of the ventilation pipe is ring-shaped, and the air outlet holes are multiple and arranged at intervals on the end of the ventilation pipe.

6. The automatic evaporation device for dissolved samples according to claim 1, characterized in that: The dispersion sheet is provided with a plurality of mounting holes, a gasket is provided between the dispersion sheet and the mounting plate, and the dispersion sheet is fixed to the mounting plate after screws are passed through the mounting holes and the gasket.

7. The automatic evaporation device for dissolved samples according to claim 6, characterized in that: The bottom surface of the dispersible tablet is an arc-shaped guiding structure with a thick middle portion and a thin edge.

8. The automatic evaporation device for dissolved samples according to claim 1, characterized in that: The cover frame includes a heat collecting cover located at the side and a supporting rib ring arranged on the top surface of the heat collecting cover.

9. The automatic evaporation device for dissolved samples according to claim 1, characterized in that: The bottom surface of the mounting plate is provided with supporting feet.

10. The automatic evaporation device for dissolved samples according to claim 1, characterized in that: The electric heating tube is a quartz glass electric heating tube.

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