Laboratory acid-removing and air-exhausting device with image observation function

Abstract

The utility model discloses a laboratory acid-driving and air-exhausting device with an image observation function. The laboratory acid-driving and air-exhausting device comprises an outer cylinder and an inner cylinder fixedly arranged in the outer cylinder, a lower ventilation plate is fixedly installed at the lower end of the outer cylinder, and an upper ventilation plate lower than an upper port of the outer cylinder is further fixedly installed in the outer cylinder. The upper end and the lower end of the inner cylinder are connected with the upper ventilation plate and the lower ventilation plate respectively. A gap is formed between the outer cylinder and the inner cylinder. And the observation mechanism comprises an observation end cover connected with an air inducing pipe. And the upper end of the probe is fixed on the observation end cover and is connected with a conduit. When the device is used for observing the acid driving state in the digestion tank, the observation end cover is buckled at the upper port of the outer cylinder, and the probe sinks into the inner cylinder, so that image observation is started. The digestion tank does not need to be taken up for naked eye observation, and the problems that an operator is scalded by a high-temperature tank body, eyes are fumigated by acid liquor, acid gas overflows and the like are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of exhaust devices for laboratory, specifically to a kind of laboratory acid chasing exhaust device with image observation function. BACKGROUND

[0002] With the continuous improvement of living standards, consumers pay more and more attention to food quality and safety issues. Environmental degradation caused by various factors leads to the circulation of heavy metals such as lead, cadmium, chromium and mercury into the food chain. Because heavy metals are very stable and difficult to degrade, they have cumulative effects. Long-term intake of food with high heavy metal content can cause many organs and systems to function, damaging human health. Therefore, heavy metal detection is a routine detection item for food detection, and the number of detections is large.

[0003] Heavy metal elements exist widely in food and food processing, and the main pretreatment method for heavy metal detection in food detection is microwave digestion method. When using microwave heating decomposition method, it is necessary to add various acids

[0004] for digestion treatment, which causes residual acid in the digestion tank. Acid chasing is to remove the residual acid in the digestion liquid, which is generally removed by heating or adding sulfuric acid, perchloric acid and other means to remove excess sample dissolving acid. If acid chasing is not performed, it will not only interfere with detection and cause errors in detection results, but also the acid itself is corrosive, and if the acidity is too high, it may cause damage to the instrument parts to some extent, thereby indirectly or directly affecting the service life of the microwave digestion instrument. Therefore, acid chasing is a very important experimental step.

[0005] According to the experimental requirements, in many cases, the acid chasing is not complete, and a small amount of acid liquid needs to be reserved at the end. Therefore, the digestion tank needs to be taken out frequently during the acid chasing process, and the eyes are directly observed to the pipe opening. Since there is no auxiliary device for observing the acid liquid, the judgment of whether the acid chasing is completed needs to be observed by the naked eye directly to the liquid level position in the digestion tank, which causes the acid chasing judgment process to be tedious and time-consuming. This type of observation method has many disadvantages, such as high-temperature tank body causing burns; acid liquid easily causing eye burns when observing; taking out for observation easily causing the pipe opening to approach the fume hood opening, causing acid gas overflow, causing damage to the body after being inhaled by personnel, etc. INVENTION CONTENTS

[0006] The technical problem to be solved by the utility model is to provide an acid chasing image observation device for food microwave digestion, which solves the inconvenience and danger caused by the need to frequently take out the digestion tank for naked eye observation, and has the characteristics of simple structure and convenient operation.

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

[0008] The utility model provides an experimental laboratory of chasing acid exhaust device with image observation function, including main body exhaust mechanism and the probe installed in main body exhaust mechanism inside, the probe lower extreme installs camera and illuminating lamp respectively, main body exhaust mechanism includes outer tube and fixedly installs the inner tube in outer tube, the lower end of outer tube is fixedly installed with the lower venting plate, and the lower venting plate is circular and is equipped with a plurality of air holes, the inner tube is also fixedly installed with the upper venting plate circular and is equipped with a plurality of air holes, the upper venting plate is lower than the upper end of outer tube, the upper and lower ends of inner tube are connected with upper venting plate and lower venting plate respectively, and there is a gap between outer tube and inner tube, the exhaust device still includes the observation mechanism used with main body exhaust mechanism, and the observation mechanism includes the observation end cover connected with second air duct, and the upper end of probe is fixed on observation end cover and is connected with the pipeline.

[0009] Preferably, the acid chasing exhaust device further comprises an exhaust end cover mechanism matched with the main body exhaust mechanism; the exhaust end cover mechanism comprises an exhaust end cover connected with a first air duct.

[0010] Preferably, the lower end of the outer cylinder is connected with a gas collecting cover.

[0011] Preferably, the lower end of the probe has a sealing lens, and the camera and the illuminating lamp are encapsulated in the probe by the sealing lens.

[0012] Preferably, the acid chasing exhaust device further comprises a host connected to the outer end of the pipeline; the host is connected with a display.

[0013] The utility model has the advantages as follows:

[0014] The device is only used for pumping and discharging acid gas, the exhaust end cover is buckled on the upper port of the outer cylinder, the first air duct is connected with the air duct or the air blower, and the acid gas under the main body exhaust mechanism is sucked. When the acid chasing state in the digestion tank is observed, the exhaust end cover is removed, the observation end cover is buckled on the upper port of the outer cylinder, the probe is immersed in the inner cylinder, image observation is started, the second air duct is connected with the air duct or the air blower, and the acid gas under the main body exhaust mechanism is sucked. When the acid chasing operation is carried out by using the utility model device, it is not necessary to hold the digestion tank to observe with naked eyes, high-temperature tank body scalding operators, acid liquid scalding eyes and acid gas overflow and other problems are avoided. The utility model also has the characteristics of simple structure, reasonable cost and convenient use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of main body exhaust mechanism of the utility model.

[0016] Figure 2 It is the structure schematic diagram of lower venting plate in main body exhaust mechanism.

[0017] Figure 3 This is a structural diagram of the exhaust end cap mechanism used in conjunction with the main exhaust mechanism.

[0018] Figure 4 This is a schematic diagram of the main observation mechanism used in conjunction with the main exhaust mechanism.

[0019] Figure 5 This is a schematic diagram of the probe structure in the observation mechanism.

[0020] Explanation of reference numerals in the attached drawings: 1. Outer cylinder; 2. Inner cylinder; 3. Annular air passage; 4. Gas collection hood; 5. Lower vent plate; 5-1. Air passage hole; 6. Upper vent plate; 7. Gas collection chamber; 8. Exhaust end cap; 9. First air intake pipe; 10. Observation end cap; 11. Second air intake pipe; 12. Probe; 13. Conduit; 14. Camera; 15. Illumination lamp. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the embodiments and accompanying drawings.

[0022] An embodiment of the food microwave digestion acid removal image observation device of this utility model includes a main exhaust mechanism, an exhaust end cap mechanism and an observation mechanism that are used in conjunction with the main exhaust mechanism.

[0023] like Figure 1 As shown, the main exhaust mechanism of this embodiment includes an outer cylinder 1 with a gas collection hood 4 connected to its lower end, and an inner cylinder 2 fixedly installed inside the outer cylinder 1. The lower end of the outer cylinder 1 is fixedly installed with... Figure 2 The lower vent plate 5 shown is annular and has several air passages 5-1. An upper vent plate 6, with the same structure and dimensions as the lower vent plate 5, is fixedly installed inside the outer cylinder 1. The upper vent plate 6 is lower than the upper end of the outer cylinder 1, forming an air collection chamber 7 between the upper vent plate 6 and the upper end of the outer cylinder 1. The upper and lower ends of the inner cylinder 2 are connected to the inner ring sides of the upper vent plate 6 and the lower vent plate 5, respectively. A gap, serving as an annular air passage 3, exists between the outer cylinder 1 and the inner cylinder 2.

[0024] Typically, the main exhaust system is installed inside the top of the laboratory fume hood. The digestion vessel is placed directly below the main exhaust system.

[0025] like Figure 3 The exhaust end cap mechanism used in conjunction with the main exhaust mechanism includes an exhaust end cap 8 connected to the first induced draft pipe 9. When this device is only used to extract acid gas, the exhaust end cap 8 is fastened to the upper port of the outer cylinder 1, and the first induced draft pipe 9 is connected to an induced draft pipe or an induced draft fan to extract the acid gas below through the main exhaust mechanism.

[0026] like Figure 4 and Figure 5The main observation mechanism matched with the main exhaust mechanism comprises an observation end cover 10 connected with a second air duct 11, and further comprises a probe 12 which is a collecting unit of the observation mechanism and has a camera 14 and a lighting lamp 15 respectively installed at lower ends thereof.

[0027] Further, the probe 12 is cylindrical and has a diameter smaller than an inner diameter of the inner cylinder 2, so as to be fitted into the inner cylinder 2. The outer layer of the probe 12 is made of high-temperature-resistant and corrosion-resistant insulating plastic, and the lower end of the probe 12 has a sealing lens (not shown in the drawings), and the camera 14 and the lighting lamp 15 are both encapsulated in the tube by the sealing lens. The inside of the conduit 13 is made of transmission line, electric wire and deformable carbon steel, and the outside is covered with high-temperature-resistant and corrosion-resistant insulating plastic.

[0028] The whole observation mechanism further comprises a host computer connected at the outer end of the conduit 13 and used for processing data of the collecting unit, and the host computer is connected with a display, a switch and a power line respectively. The host computer receives observation data transmitted by the conduit 13 and performs operation processing, and sends operation results to the display.

[0029] When the device is used for observing the state of acid chasing in the digestion tank, the exhaust end cover 8 is removed, the observation end cover 10 is buckled on the upper end of the outer cylinder 1, the probe 12 is sunk in the inner cylinder 2, and image observation is started. At the same time, the second air duct 11 is connected with an air duct or an air blower, and the acid gas below is sucked by the main exhaust mechanism.

[0030] The technical, shape and structure parts not described in detail in the device are all known technologies. The device is not limited to the above-mentioned embodiments, and any person should know that the structural changes made under the inspiration of the device fall into the protection scope of the device, and any technical solution with the same or similar technical solution falls into the protection scope of the device.

Claims

1. Laboratory acid chasing exhaust device with image observation function, comprising a main body exhaust mechanism and a probe (12) installed inside the main body exhaust mechanism, the lower end of the probe (12) is respectively provided with a camera (14) and a lighting lamp (15), characterized in that: The main body exhaust mechanism comprises an outer cylinder (1) and an inner cylinder (2) fixedly installed in the outer cylinder (1); a lower end of the outer cylinder (1) is fixedly installed with a lower vent plate (5) which is circular and is provided with a plurality of air passing holes; the outer cylinder (1) is further fixedly installed with an upper vent plate (6) which is circular and is provided with a plurality of air passing holes; the upper vent plate (6) is lower than an upper end of the outer cylinder (1); upper and lower ends of the inner cylinder (2) are connected with the upper vent plate (6) and the lower vent plate (5) respectively; there is a gap between the outer cylinder (1) and the inner cylinder (2); the acid chasing exhaust device further comprises an observation mechanism used in cooperation with the main body exhaust mechanism; the observation mechanism comprises an observation end cover (10) connected with a second air duct (11); an upper end of a probe (12) is fixed to the observation end cover (10) and is connected with a conduit (13).

2. The laboratory acid flushing exhaust device with image observation function according to claim 1, characterized in that: The acid chasing exhaust device further comprises an exhaust end cover mechanism used in cooperation with the main body exhaust mechanism; the exhaust end cover mechanism comprises an exhaust end cover (8) connected with a first air duct (9).

3. The laboratory acid flushing exhaust apparatus having a video observation function according to claim 1, characterized by: A lower end of the outer cylinder (1) is connected with a gas collecting cover (4).

4. The laboratory acid flushing exhaust apparatus having a video observation function according to claim 1, characterized by: The probe (12) is provided with a sealing lens at a lower end thereof; the camera (14) and the illuminating lamp (15) are encapsulated in the probe (12) by the sealing lens.

5. The laboratory acid flushing exhaust device with image observation function according to claim 1 or 2 or 3 or 4, characterized in that: The acid chasing exhaust device further comprises a main machine connected to an outer end of the conduit; the main machine is connected with a display.

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