Waste gas treatment device of microwave digestion instrument

Abstract

The utility model belongs to the field of waste gas treatment of microwave digestion instruments, in particular relates to a waste gas treatment device of a microwave digestion instrument, and aims to solve the problems that an existing microwave digestion instrument can generate acid gas during use, the acid gas is discharged into a fume hood through an exhaust pipe, then the acid gas is conveyed to the next working procedure through the fume hood to be absorbed, and finally the acid gas is discharged. In order to solve the problems that in the prior art, in the prior art, in the whole treatment process, pollution is easily caused to the environment, a fume hood, absorption equipment and other objects are needed, and troubles are caused, the following scheme is provided: the microwave digestion device comprises a microwave digestion device and a reaction tank for treating waste gas of the microwave digestion device, and the reaction tank is filled with an alkaline solution; the waste gas is directly discharged into the reaction tank for neutralization treatment, environmental pollution is effectively prevented, meanwhile, a fume hood, absorption equipment and the like are not needed for treatment, more convenience is achieved, and the fixing pipe can be fixed through the fixing mechanism and prevented from shaking in the reaction tank.

Description

Technical Field

[0001] This utility model relates to the field of microwave digester exhaust gas treatment technology, and in particular to a microwave digester exhaust gas treatment device. Background Technology

[0002] Microwave digestion technology utilizes the penetrating power and reaction-activating ability of microwaves to heat reagents and samples in a sealed container. This increases the pressure inside the sample preparation container and raises the reaction temperature, thereby greatly improving the reaction rate and shortening the sample preparation time.

[0003] Existing microwave digestion systems have the following shortcomings in use:

[0004] Microwave digesters typically use strong acids (such as nitric acid, hydrochloric acid, and hydrofluoric acid) as digestion solutions when digesting samples. These acids are released into the digestion chamber during the process, increasing its acidity. For example, the use of nitric acid produces nitric acid gas, which is then discharged into a fume hood through an exhaust pipe. The fume hood then transports the acidic gas to the next stage for absorption before finally releasing it. This entire process can easily pollute the environment and is quite cumbersome, requiring equipment such as fume hoods and absorption devices. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where microwave digesters generate nitric acid gas during use. This nitric acid gas is then discharged into a fume hood through an exhaust pipe. The fume hood then transports the acidic gas to the next process for absorption before finally discharging it. This process easily pollutes the environment and requires fume hoods, absorption equipment, and other cumbersome components. Therefore, this invention proposes a waste gas treatment device for microwave digesters.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A microwave digester exhaust gas treatment device includes a microwave digester and a reaction tank for treating the microwave digester exhaust gas. The reaction tank is filled with an alkaline solution. An exhaust pipe is fixedly installed at the exhaust port of the microwave digester. A flexible tube is fixedly installed at one end of the exhaust pipe. A fixing pipe is fixedly installed at the bottom end of the flexible tube. The bottom end of the fixing pipe is located in the alkaline solution in the reaction tank.

[0008] The fixing mechanism is located on one side of the reaction tank to fix the fixing pipe and prevent it from shaking inside the reaction tank.

[0009] Preferably, the fixing mechanism includes a fixing plate, a plug, a threaded rod, and a knob for facilitating rotation of the threaded rod. One side of the fixing plate is fixedly connected to the inner wall of one side of the reaction tank, and one side of the plug is fixedly connected to one side of the fixing tube. The fixing plate has a slot, the plug is inserted into the slot, and the plug has a insertion hole. The top of the fixing plate has a threaded hole that communicates with the slot. The threaded rod is threadedly connected to the threaded hole, and the bottom end of the threaded rod is inserted into the insertion hole. The bottom of the knob is fixedly connected to the top end of the threaded rod.

[0010] Preferably, a scale line for marking the volume of alkaline solution is fixedly provided on one inner wall of the reaction tank.

[0011] Preferably, a drain pipe is fixedly installed on one side of the reaction tank to facilitate the replacement of the solution in the reaction tank, and a valve is installed on the drain pipe.

[0012] Preferably, the inner wall of the discharge pipe is fixedly provided with an exhaust fan for discharging waste gas into the reaction tank.

[0013] Preferably, the knob is provided with an anti-slip groove to increase the friction of the user's hand and prevent slipping.

[0014] In this application, before use, check whether the alkaline solution in the reaction tank is sufficient. Confirm the capacity using the graduation lines on the inner wall of one side of the reaction tank to ensure the solution volume meets the requirements for treating the waste gas. Insert the bottom end of the fixed tube into the alkaline solution in the reaction tank to ensure the waste gas can be directly discharged into the solution for treatment. Secure the fixed tube using a fixing mechanism. Specifically, align the insert block on one side of the fixed tube with and insert it into the slot on the fixing plate. Then rotate the knob to move the threaded rod downwards along the threaded hole at the top of the fixing plate until the bottom end of the threaded rod is inserted into the insertion hole on the insert block, thereby fixing the fixed tube and preventing... It is shaken in the reaction tank before use. The waste gas (acidic gas produced by nitric acid) generated during the digestion process is introduced into the alkaline solution in the reaction tank through the discharge pipe, hose and fixed pipe. At this time, the exhaust fan can be turned on to enhance the discharge efficiency of the waste gas. The waste gas reacts in the alkaline solution (such as alkali) and is effectively neutralized. By directly discharging the waste gas into the reaction tank for neutralization, environmental pollution is effectively prevented. At the same time, there is no need for fume hood, absorption equipment and other treatment, which is more convenient. It should be noted that the exhaust fan needs to be controlled by an external controller and powered by an external power source before use.

[0015] In this utility model, the microwave digester exhaust gas treatment device directly discharges the exhaust gas into the reaction tank for neutralization treatment, which effectively prevents environmental pollution. At the same time, it does not require fume hoods, absorption equipment or other treatment equipment, making it more convenient.

[0016] In this utility model, the microwave digester exhaust gas treatment device uses a fixing mechanism to align and insert the plug on one side of the fixing tube into the slot on the fixing plate. Then, by rotating the knob, the threaded rod moves downward along the threaded hole at the top of the fixing plate until the bottom end of the threaded rod is inserted into the plug hole on the plug, thereby fixing the fixing tube and preventing it from shaking in the reaction tank.

[0017] In this invention, waste gas is directly discharged into the reaction tank for neutralization treatment, which effectively prevents environmental pollution. At the same time, it does not require fume hoods, absorption equipment, etc., making it more convenient. The fixing mechanism can fix the fixing pipe to prevent it from shaking in the reaction tank. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of a microwave digester waste gas treatment device proposed in this utility model;

[0019] Figure 2 This is a side view of the waste gas treatment device for microwave digestion proposed in this utility model.

[0020] Figure 3 This is a partial structural schematic diagram of a microwave digester waste gas treatment device proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the discharge pipe of a microwave digester exhaust gas treatment device proposed in this utility model.

[0022] In the diagram: 1. Microwave digester; 2. Reaction tank; 3. Discharge pipe; 4. Flexible hose; 5. Scale line; 6. Drain pipe; 7. Fixing pipe; 8. Fixing plate; 9. Knob; 10. Slot; 11. Insert block; 12. Threaded rod; 13. Exhaust fan. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1

[0025] Reference Figure 1-4A microwave digester exhaust gas treatment device, used in the field of microwave digester exhaust gas treatment, includes: a microwave digester 1 and a reaction tank 2. The reaction tank 2 contains an alkaline solution for treating the exhaust gas. An exhaust pipe 3 is fixedly installed at the exhaust port of the microwave digester 1, and a flexible hose 4 is fixedly connected to one end of the exhaust pipe 3. A fixed pipe 7 is then fixedly connected to the bottom end of the flexible hose 4. The bottom end of the fixed pipe 7 extends into the alkaline solution in the reaction tank 2, so as to guide the exhaust gas generated by the microwave digester 1 into the solution for treatment.

[0026] To prevent the fixed tube 7 from swaying within the reaction tank 2, a fixing mechanism is installed on one side of the reaction tank 2. This fixing mechanism includes a fixing plate 8, a plug 11, a threaded rod 12, and a knob 9. One side of the fixing plate 8 is fixedly connected to the inner wall of one side of the reaction tank 2, and one side of the plug 11 is fixedly connected to one side of the fixed tube 7. A slot 10 is provided on the fixing plate 8, into which the plug 11 can be inserted. In addition, a socket is provided on the plug 11, and a threaded hole communicating with the slot 10 is provided on the top of the fixing plate 8. The threaded rod 12 is threadedly connected to the threaded hole, and its bottom end can be inserted into the socket, thereby fixing the plug 11 and the fixed tube 7. The bottom of the knob 9 is fixedly connected to the top of the threaded rod 12. Rotating the knob 9 will rotate the threaded rod 12, thereby fixing and loosening the fixed tube 7. To facilitate rotation of the knob 9, an anti-slip groove is provided on the knob 9 to increase the friction of the operator's hand and prevent slippage during rotation.

[0027] Example 2

[0028] refer to Figure 1-4 Improvements based on Example 1:

[0029] A graduation line 5 is fixedly installed on one inner wall of the reaction tank 2 to mark the volume of the alkaline solution, so that operators can know the amount of solution at any time and ensure the effectiveness of waste gas treatment. In addition, a drain pipe 6 is fixedly installed on one side of the reaction tank 2, and a valve is installed on the drain pipe 6 to replace the solution in the reaction tank 2 when necessary.

[0030] To enhance the efficiency of exhaust gas emission, an exhaust fan 13 is fixedly installed on the inner wall of the exhaust pipe 3. The exhaust fan 13 can be turned on, and it can more quickly guide the exhaust gas generated by the microwave digester 1 into the alkaline solution of the reaction tank 2 through the exhaust pipe 3, the hose 4, and the fixed pipe 7, thereby improving the speed and efficiency of exhaust gas treatment.

[0031] The model of microwave digester 1 is microwave digester HGO8Z-40. Microwave digester 1 is existing technology, and its working principle is common knowledge, so it will not be described in detail here. Of course, the specific model and specifications can be selected according to actual needs.

[0032] However, as is well known to those skilled in the art, the working principle and wiring method of the exhaust fan 13 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A microwave digester exhaust gas treatment device, characterized in that, The device includes a microwave digester (1) and a reaction tank (2) for treating the exhaust gas of the microwave digester (1). The reaction tank (2) is filled with an alkaline solution. The exhaust port of the microwave digester (1) is fixedly provided with an exhaust pipe (3). One end of the exhaust pipe (3) is fixedly provided with a flexible tube (4). The bottom end of the flexible tube (4) is fixedly provided with a fixing tube (7). The bottom end of the fixing tube (7) is located in the alkaline solution of the reaction tank (2). A fixing mechanism is provided on one side of the reaction tank (2) to fix the fixing tube (7) and prevent the fixing tube (7) from shaking in the reaction tank (2).

2. The microwave digester exhaust gas treatment device according to claim 1, characterized in that, The fixing mechanism includes a fixing plate (8), a plug (11), a threaded rod (12), and a knob (9) for rotating the threaded rod (12). One side of the fixing plate (8) is fixedly connected to the inner wall of one side of the reaction tank (2), and one side of the plug (11) is fixedly connected to one side of the fixing tube (7). The fixing plate (8) has a slot (10), the plug (11) is inserted into the slot (10), the plug (11) has a socket, the top of the fixing plate (8) has a threaded hole that communicates with the slot (10), the threaded rod (12) is threadedly connected to the threaded hole, the bottom end of the threaded rod (12) is inserted into the socket, and the bottom of the knob (9) is fixedly connected to the top end of the threaded rod (12).

3. The microwave digester exhaust gas treatment device according to claim 1, characterized in that, The reaction tank (2) has a scale line (5) fixedly installed on one side of the inner wall for marking the volume of alkaline solution.

4. The microwave digester exhaust gas treatment device according to claim 1, characterized in that, A drain pipe (6) is fixedly installed on one side of the reaction tank (2) to facilitate the replacement of the solution in the reaction tank (2), and a valve is installed on the drain pipe (6).

5. The microwave digester exhaust gas treatment device according to claim 1, characterized in that, The inner wall of the discharge pipe (3) is fixedly equipped with an exhaust fan (13) for discharging waste gas into the reaction tank (2).

6. The microwave digester exhaust gas treatment device according to claim 2, characterized in that, The knob (9) has an anti-slip groove to increase the friction of the user's hands and prevent slipping.

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