Microwave digestion acid-expelling observation device

Abstract

The utility model discloses a microwave digestion acid-driving observation device which comprises a longitudinal observation tube with a sealing lens at the lower end, and an illuminating lamp is arranged at the lower end part of the longitudinal observation tube or below the longitudinal observation tube. The upper end of the longitudinal observation pipe is connected with a transverse observation pipe of which the trend is vertical to the trend of the longitudinal observation pipe; a first reflective mirror used for reflecting light in the longitudinal observation pipe to the outer end of the transverse observation pipe is fixedly installed at the joint of the longitudinal observation pipe and the transverse observation pipe. When the acid-driving operation is observed, the longitudinal observation tube is inserted into the digestion tank or the lower end of the longitudinal observation tube is positioned at the opening of the digestion tank, the illuminating lamp is turned on, and an operator can observe the state in the digestion tank in the side direction of the digestion tank by means of the reflection direction change of the light rays by the reflective mirror. Therefore, the operation is simplified, the risk of acid gas overflow is reduced, and the operation safety is improved.

Description

Technical Field

[0001] This utility model relates to an experimental observation device, specifically a microwave digestion acid removal observation device. It is mainly used for observing the degree of acid removal within a microwave digestion vessel during food testing. Background Technology

[0002] With the acceleration of industrialization in modern society, environmental pollution has become increasingly serious, with heavy metal pollution being particularly prominent. Heavy metals, including lead, cadmium, chromium, and mercury, are difficult to degrade naturally in the environment and may enter human organs and tissues through the food chain, posing a serious threat to human health. Therefore, the detection and monitoring of heavy metals in food is of great significance for ensuring food safety and protecting human health.

[0003] Heavy metals are widely present in food and food processing, and heavy metal detection is a routine item in food testing, involving a large number of samples. The main pretreatment method used for heavy metal detection is microwave digestion. This method requires placing the digestion vessel on a heated acid-removing device after digestion to allow the acid to evaporate. According to the experimental procedures, the acid removal endpoint requires that some acid be retained in the digestion vessel and not evaporated completely; therefore, the degree of acid removal in the digestion vessel needs to be frequently monitored.

[0004] Currently, there is no simple and convenient microwave digestion acid removal observation device. During experiments, the usual practice is to hold the digestion vessel and observe it directly at the opening. The main drawback of this method is that…

[0005] First, frequently handling high-temperature containers is not only cumbersome but also easily causes burns; second, acid can easily burn the operator's eyes during observation; third, removing them from the fume hood can easily cause acid fumes to leak out and pollute the air. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a microwave digestion acid removal observation device, which solves the inconvenience and danger caused by the need to frequently remove the digestion vessel for naked-eye observation, and at the same time has the characteristics of simple structure and convenient operation.

[0007] The technical solution of this utility model is as follows:

[0008] A microwave digestion and acid removal observation device includes a longitudinal observation tube with a sealing lens installed at its lower end, an illumination lamp installed at the lower end or below the longitudinal observation tube, and a transverse observation tube connected to the upper end of the longitudinal observation tube with a direction perpendicular to the longitudinal observation tube; a first reflector is fixedly installed at the connection between the longitudinal observation tube and the transverse observation tube to reflect the light inside the longitudinal observation tube to the outer end of the transverse observation tube.

[0009] Preferably, a protective eye cover is installed at the outer end of the transverse observation tube.

[0010] Preferably, the observation device further includes an oblique observation tube whose inner end is lower than its outer end and whose axis forms an angle between its axis and the axis of the transverse observation tube in the range of 30° to 60°; the inner end of the oblique observation tube is connected to the outer port of the transverse observation tube; a second reflector is fixedly installed at the connection between the oblique observation tube and the transverse observation tube for reflecting the light inside the transverse observation tube to the outer port of the oblique observation tube.

[0011] More preferably, the outer end of the oblique observation tube is connected to a goggle.

[0012] Preferably, the observation device further includes a circular hanger suspended directly below the longitudinal observation tube; an air nozzle facing the sealing lens is fixedly installed on the circular hanger.

[0013] More preferably, the lighting lamp is fixedly mounted on the circular hanger.

[0014] More preferably, the diameter of the annular hanger is larger than the diameter of the longitudinal observation tube.

[0015] The beneficial effects of this utility model are as follows:

[0016] Firstly, when using the observation device of this invention for acid removal operations, the longitudinal observation tube is inserted into the digestion vessel or positioned with its lower end at the vessel opening. By utilizing the reflector to redirect the light, the operator can observe the state inside the digestion vessel from a side position. This eliminates the need to observe directly at the vessel opening or remove the vessel, simplifying the operation, reducing the risk of acid gas leakage, and improving operational safety. This invention also features a simple structure, reasonable cost, and ease of use.

[0017] Secondly, the preferred technical solution of this utility model introduces a jet mechanism. During the observation process, the airflow generated by the external air source blows the sealed lens at the lower end of the longitudinal observation tube, which can effectively prevent acid fog from frosting on the lens and affecting the observation effect. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0020] Figure 3 This is a structural schematic diagram of Embodiment 3 of this utility model;

[0021] in Figure 1 and Figure 2 The power cord for the lighting fixture has been omitted.

[0022] Explanation of reference numerals in the attached diagram: 1. Longitudinal observation tube; 2. Sealed lens; 3. Illumination lamp; 4. First reflector; 5. Lateral observation tube; 6. Eye protection; 7. Angled observation tube; 8. Second reflector; 9. Circular hanger; 10. Connecting rod; 11. Rubber sleeve; 12. Wire; 13. Air tube; 14. Air nozzle. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments and accompanying drawings. Example 1

[0024] Figure 1 The basic structure of the microwave digestion and acid removal observation device of this utility model is shown.

[0025] like Figure 1 As shown, this embodiment includes a longitudinal observation tube 1, with a sealing lens 2 and an illumination lamp 3 installed at the lower end of the longitudinal observation tube 1. The tube body of the longitudinal observation tube 1 is made of opaque, high-temperature resistant, and corrosion-resistant plastic. The sealing lens 2 seals the tube opening from the lower end of the longitudinal observation tube 1 to prevent acid gas from entering the tube. The illumination lamp 3 is a spotlight that is fixed to the outer side of the lower end of the longitudinal observation tube 1, and the lamp body is covered with a sealed transparent, high-temperature resistant, and corrosion-resistant plastic lampshade.

[0026] The upper end of the longitudinal observation tube 1 is connected to a transverse observation tube 5 whose direction is perpendicular to that of the longitudinal observation tube 1. The inner end of the transverse observation tube 5 ( Figure 1 A first reflector 4 is fixedly installed at the left end (as shown) to reflect light from the longitudinal observation tube 1 to the outer port of the transverse observation tube 5. A goggle 6 is installed at the outer end of the transverse observation tube 5. The goggle 6 is generally made of soft rubber or silicone to prevent the operator's eyes from making hard contact with the transverse observation tube 5.

[0027] The lighting lamp 3 is connected to a power cord and a power switch. The power cord is generally led out along the outer wall of the longitudinal observation tube 1 and the transverse observation tube 5 and fixed to the observation tube.

[0028] The transverse observation tube 5 is made of opaque, high-temperature resistant, and corrosion-resistant plastic. The first reflector 4 is used to ensure that the image directly below the longitudinal observation tube 1 is reflected onto the observation port at the eyepiece 6. Example 2

[0029] Figure 2 An extended structure of the microwave digestion and acid removal observation device of this utility model is shown.

[0030] like Figure 2 Based on Embodiment 1, this embodiment further includes an oblique observation tube 7, the inner end of which ( Figure 2The lower left end (as shown) connects to the outer port of the horizontal observation tube 5, and the outer end connects to the eye protection holder 6. The oblique observation tube 7 is inclined with its inner end lower than its outer end, and the angle between the axis of the oblique observation tube 7 and the axis of the horizontal observation tube 5 is generally 30° to 60°, preferably 45°. A second reflector 8 is fixedly installed at the connection between the oblique observation tube 7 and the horizontal observation tube 5 to reflect the light inside the horizontal observation tube 5 to the outer port of the oblique observation tube 7. The tube body of the oblique observation tube 7 is made of opaque, high-temperature resistant, and corrosion-resistant plastic. Example 3

[0031] Figure 3 This invention demonstrates another extended structure of the microwave digestion and acid removal observation device.

[0032] like Figure 3 Based on Embodiment 1 or Embodiment 2, this embodiment further includes a circular hanger 9 suspended directly below the longitudinal observation tube 1 by a connecting rod 10. Both ends of the connecting rod 10 are fixed to the tube wall of the longitudinal observation tube 1 and the circular hanger 9, respectively. "Directly below" means that the central axis of the longitudinal observation tube 1 passes through the center of the circular hanger 9. An air nozzle 14 facing the sealing lens 2 is fixedly installed on the circular hanger 9.

[0033] Specifically, this embodiment includes a rubber sleeve 11 that is fitted and fixed to the outer wall of the longitudinal observation tube 1. A wire 12 and an air tube 13 are fixed to the rubber sleeve 11 by adhesive bonding. The lead-out end of the wire 12 is connected to the lighting lamp 3 to supply power to the lighting lamp 3. The lead-out end of the air tube 13 serves as the air supply end and is connected to the air nozzle 14. The outer end of the wire 12 is used to connect to a power source and a power switch. The outer end of the air tube 13 is used to connect to an external air source and an air supply valve.

[0034] In addition, in this embodiment, the lighting lamp 3 is fixedly installed on the circular hanger 9.

[0035] Furthermore, the diameter of the circular hanger 9 is larger than the diameter of the longitudinal observation tube 1, so as to avoid the circular hanger 9 from blocking the observation optical path as much as possible.

[0036] During observation, depending on the actual liquid level inside the digestion tank, the lower end of the longitudinal observation tube 1 should be positioned at the mouth of the digestion tank, or the sealing lens 2 should be slightly higher than, slightly lower than, or flush with the mouth of the digestion tank. Turn on the lighting 3, and the observer should rest their eyes against the goggles 6 to observe the state inside the digestion tank. If frost is found on the sealing lens 2, open the external air supply valve and spray air from the nozzle 14 towards the sealing lens 2 to defrost it.

[0037] The technologies, shapes, and structures not described in detail in this utility model are all known technologies. The technical solutions protected by this utility model are not limited to the above-described embodiments.

Claims

1. A microwave digestion acid removal observation device, comprising a longitudinal observation tube (1) with a sealing lens (2) installed at its lower end, wherein a lighting lamp (3) is installed at or below the lower end of the longitudinal observation tube (1), characterized in that: The upper end of the longitudinal observation tube (1) is connected to a transverse observation tube (5) whose direction is perpendicular to that of the longitudinal observation tube (1); a first reflector (4) for reflecting the light inside the longitudinal observation tube (1) to the outer end of the transverse observation tube (5) is fixedly installed at the connection between the longitudinal observation tube (1) and the transverse observation tube (5).

2. The microwave digestion and acid removal observation device as described in claim 1, characterized in that: The outer end of the transverse observation tube (5) is fitted with a protective eye cover (6).

3. The microwave digestion and acid removal observation device as described in claim 1, characterized in that: The observation device also includes an oblique observation tube (7) whose inner end is lower than its outer end and whose axis is at an angle between 30° and 60° with the axis of the transverse observation tube (5); the inner end of the oblique observation tube (7) is connected to the outer port of the transverse observation tube (5); a second reflector (8) for reflecting the light inside the transverse observation tube (5) to the outer port of the oblique observation tube (7) is fixedly installed at the connection between the oblique observation tube (7) and the transverse observation tube (5).

4. The microwave digestion and acid removal observation device as described in claim 3, characterized in that: The outer end of the oblique observation tube (7) is connected to a protective eye cover (6).

5. The microwave digestion and acid removal observation device as described in claim 1, 2, 3, or 4, characterized in that: The observation device also includes a circular hanger (9) suspended directly below the longitudinal observation tube (1); an air nozzle (14) facing the sealing lens (2) is fixedly installed on the circular hanger (9).

6. The microwave digestion and acid removal observation device as described in claim 5, characterized in that: The lighting lamp (3) is fixedly installed on the circular hanger (9).

7. The microwave digestion and acid removal observation device as described in claim 5, characterized in that: The diameter of the circular hanger (9) is larger than the diameter of the longitudinal observation tube (1).

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