Sulfur dioxide tester

Abstract

The utility model belongs to the field of sulfur dioxide determination, particularly relates to a sulfur dioxide determinator, and aims to solve the problems that after sulfur dioxide gas is absorbed by an absorption solution, a sulfur dioxide gas pipeline is directly placed on a table top when being taken out from a test sample, one end of the pipeline cannot be clamped and tidied, and the pipeline cannot be taken out. According to the technical scheme, the test table comprises an L-shaped table body, a fixing plate is fixedly arranged on one side of the top of the table body, a plurality of test sample cups are placed on one side of the top of the table body, six grooves are formed in one side of the top of the table body, and ceramic heaters are fixedly arranged on the inner walls of the tops of the grooves; the double-opening beaker is placed on the heating part of the ceramic heater, one end of the exhaust pipe can be clamped through the first clamping mechanism, the exhaust pipe is arranged, the exhaust pipe does not need to be placed on a table top, the whole device is more attractive, and a distillation flask can be clamped and fixed through the second clamping mechanism.

Description

Technical Field

[0001] This utility model relates to the field of sulfur dioxide determination technology, and in particular to a sulfur dioxide analyzer. Background Technology

[0002] Sulfur dioxide determination is widely used in food and drug inspection. During the distillation process of the sulfur dioxide analyzer, the pipe containing the volatilized sulfur dioxide gas is placed in the absorption solution. The sulfur dioxide gas is absorbed by the solution and converted into sulfate ions. Then the sample is removed and titrated with sodium hydroxide solution for acid-base neutralization to calculate the residual amount of sulfur dioxide in the medicinal slices.

[0003] The existing measuring instruments have the following shortcomings in use:

[0004] After the sulfur dioxide gas has been absorbed by the absorption solution, when removing the sulfur dioxide gas pipeline from the sample, the pipeline should be placed directly on the table without clamping or tidying one end, as this would result in an unsightly overall appearance. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where, after the sulfur dioxide gas has been absorbed by the absorption solution, the sulfur dioxide gas pipeline is simply placed on the table when it is removed from the sample, without clamping or tidying one end of the pipeline, resulting in an unsightly overall appearance. Therefore, this invention provides a sulfur dioxide analyzer.

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

[0007] A sulfur dioxide analyzer includes an L-shaped platform. A fixing plate is fixedly installed on one side of the top of the platform. Multiple sample cups are placed on the top side of the platform. Six grooves are formed on the top side of the platform. A ceramic heater is fixedly installed on the inner wall of the top of the grooves. A double-necked beaker is placed in the heating part of the ceramic heater. The top of the double-necked beaker is provided with a first opening and a second opening. A sealing ring is fixedly installed on the inner wall of both the first opening and the second opening. A nitrogen tube and a sulfur dioxide tube are respectively inserted into the first opening and the second opening. A distillation flask is fixedly fitted on the outside of the sulfur dioxide tube. A connecting pipe is fixedly installed on one side of the sulfur dioxide tube and they are connected. The distillation flask, the connecting pipe and the sulfur dioxide tube are an integral structure. A water inlet pipe for cooling water is fixedly installed on the top of the distillation flask. A drain pipe for cooling water is fixedly installed on one side of the distillation flask. An exhaust pipe is fixedly installed at one end of the connecting pipe. The other end of the exhaust pipe is placed in the sample cup. A square plate is fixedly installed on one side of the fixing plate.

[0008] The first clamping mechanism is located on one side of the platform and is used to clamp and fix one end of the exhaust pipe after it is taken out of the sample cup.

[0009] The second clamping mechanism, the second clamping structure, is located on one side of the square plate and is used to clamp and fix the distillation flask after it has been adjusted up and down.

[0010] Preferably, the first clamping mechanism includes six fixed frames, six clamping plates, and six second threaded rods. One side of each of the six fixed frames is fixedly connected to one side of the platform. A slider is fixedly provided on one side of each of the six clamping plates. A groove is provided on the inner wall of one side of each fixed frame. One side of the slider is slidably connected to the inner wall of the groove. The six second threaded rods are threadedly connected to the six fixed frames respectively. One end of each second threaded rod is rotatably connected to one side of the clamping plate. A second knob is fixedly provided on the other end of each second threaded rod to facilitate its rotation.

[0011] Preferably, the second clamping mechanism includes a frame, a first arc-shaped plate, a second arc-shaped plate, and a first threaded rod. The frame is U-shaped, with both ends fixedly connected to one side of the square plate. One side of the second arc-shaped plate is fixedly connected to one side of the square plate. The first threaded rod is threadedly connected to the frame, and one end of the first threaded rod is rotatably connected to one side of the first arc-shaped plate. The distillation flask is located between the first and second arc-shaped plates. A first knob is fixedly provided at the other end of the first threaded rod to facilitate its rotation. A telescopic rod for limiting the rotation of the first arc-shaped plate is fixedly provided on the inner wall of one side of the frame. The telescopic part of the telescopic rod is fixedly connected to one side of the first arc-shaped plate.

[0012] Preferably, a water tank is fixedly installed on one side of the platform, a water pump is fixedly installed on the top of the water tank, a water pump inlet is fixedly installed with a water suction pipe, one end of the water suction pipe is fixedly connected to the bottom side of the water tank, the top of the water tank is fixedly mounted with a bracket, the outlet of the water pump is fixedly connected to the bottom side of the tank, the bottom ends of six water inlet pipes are fixedly connected to the top of the tank and are connected to the tank, the bottom ends of six water drain pipes are fixedly connected to the top of the tank and are connected to the tank, a semiconductor cooling chip for cooling the water is fixedly installed on the inner wall of the water tank, and a second valve is installed on each of the six water inlet pipes.

[0013] Preferably, both the first and second arc-shaped plates are fixedly provided with anti-slip rubber pads on their sides that are in contact with each other.

[0014] Preferably, a water inlet pipe is fixedly installed on the top of the water tank, and a cover is threaded onto the water inlet pipe. A drain pipe is fixedly installed on one side of the water tank to facilitate the replacement of the water in the water tank, and a first valve is installed on the drain pipe.

[0015] In this application, an external nitrogen pipeline is connected to a nitrogen pipe before use. A water pump, ceramic heater, and semiconductor refrigeration chip are powered by an external power supply and controlled by an external controller. Then, a double-necked beaker containing the solution to be heated is placed in the heating section of the ceramic heater. Holding the distillation flask in one hand, the first knob is turned with the other. The rotation of the first knob causes the first threaded rod to rotate, which in turn moves the first arc-shaped plate away from one side of the distillation flask. The distillation flask is moved up and down until the bottom end of the sulfur dioxide tube in the distillation flask is inserted into the first opening of the double-necked beaker, and one end of the nitrogen tube is inserted into… Inside the second opening, a sealing ring improves the seal. Then, rotating the first knob moves the first threaded rod on the frame, causing the first arc-shaped plate to move closer to the second arc-shaped plate, clamping the distillation flask and securing it. Simultaneously, the telescopic rod ensures the first arc-shaped plate does not rotate during movement. Next, the sample cup containing the absorption solution (reaction reagent) is placed on the platform, with one end of the exhaust pipe placed inside the sample cup (within the solution). Then, the second valve on the corresponding water inlet pipe is opened, activating the ceramic heater to irradiate the sample in the double-necked beaker. Heating causes sulfur dioxide to volatilize. Nitrogen gas is blown into a double-necked beaker through a nitrogen tube, carrying the sulfur dioxide into a distillation flask for condensation. A water pump is started, drawing water from a tank through a pumping pipe and then pumping it into the chamber through the pump's outlet. Cooling water enters the distillation flask through an inlet pipe to condense the sulfur dioxide. The condensed water flows back into the chamber through a drain pipe and eventually back into the tank, forming a cycle. The water temperature in the tank can be controlled by adjusting a semiconductor cooling chip to regulate the cooling effect. The condensed sulfur dioxide enters the sample cup through an exhaust pipe for further condensation. Sulfur oxide is absorbed for subsequent determination. After heating for a certain time, the ceramic heater and water pump are turned off, and the exhaust pipe is removed. Finally, the exhaust pipe of the sample cup is removed (after removal, a drying tool such as a towel or paper towel can be used to dry the exhaust pipe). One end of the exhaust pipe is placed between the fixed frame and the clamping plate. The second knob is turned to move the second threaded rod on the fixed frame. The clamping plate slides in the groove through the slider, thereby clamping or releasing one end of the exhaust pipe. The exhaust pipe is then tidied up to make the overall appearance more aesthetically pleasing. The water inlet pipe, drain pipe, exhaust pipe, and nitrogen pipe are all transparent flexible tubes.

[0016] In this utility model, the sulfur dioxide analyzer uses a first clamping mechanism to hold one end of the exhaust pipe between the fixed frame and the clamping plate. By rotating the second knob, the second threaded rod moves on the fixed frame, and the clamping plate slides in the groove through the slider, thereby clamping one end of the exhaust pipe and tidying up the exhaust pipe to make the overall appearance more aesthetically pleasing.

[0017] In this utility model, the sulfur dioxide analyzer uses a second clamping mechanism to rotate a first knob, causing the first threaded rod to move on the frame, thereby bringing the first arc plate closer to the second arc plate and clamping the distillation flask, thus clamping and fixing the distillation flask.

[0018] In this invention, the first clamping mechanism can clamp one end of the exhaust pipe, tidying up the exhaust pipe so that it does not need to be placed on the table, making the overall appearance more aesthetically pleasing. The second clamping mechanism can clamp and fix the distillation flask. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a sulfur dioxide analyzer proposed in this utility model;

[0020] Figure 2 This is a side view of the sulfur dioxide analyzer proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the second clamping mechanism of a sulfur dioxide analyzer proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the first clamping mechanism of a sulfur dioxide analyzer proposed in this utility model;

[0023] Figure 5 This is a cross-sectional view of the distillation flask of a sulfur dioxide analyzer proposed in this utility model.

[0024] In the diagram: 1. Platform; 2. Fixing plate; 3. Distillation flask; 4. Double-necked beaker; 5. Fixing frame; 6. Sample cup; 7. Nitrogen pipe; 8. Water inlet pipe; 9. Drain pipe; 10. Frame; 11. Water tank; 12. Box; 13. Discharge pipe; 14. Water pump; 15. First arc-shaped plate; 16. First threaded rod; 17. Telescopic rod; 18. Second arc-shaped plate; 19. Square plate; 20. Second threaded rod; 21. Clamping plate; 22. Connecting pipe; 23. Exhaust pipe; 24. Pumping pipe. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] Reference Figure 1-5An apparatus for measuring instruments includes: an L-shaped platform 1. A fixing plate 2 is fixedly mounted on one side of the top of the platform 1. The other side of the top of the platform 1 is designed to hold multiple sample cups 6 for holding samples to be tested. In addition, six recesses are formed on the top of the platform 1, and a ceramic heater is fixedly mounted on the inner wall of the top of each recess. A double-necked beaker 4 is placed on the heating part of the ceramic heater. The double-necked beaker 4 has a first opening and a second opening, and the inner walls of both openings are fitted with sealing rings to ensure airtightness. A nitrogen tube 7 and a sulfur dioxide tube are respectively inserted into the first and second openings, with a distillation flask 3 fixedly fitted on the outside of the sulfur dioxide tube.

[0028] The distillation flask 3, connecting pipe 22, and sulfur dioxide pipe are designed as a single unit. The top of the distillation flask 3 has a water inlet pipe 8 for introducing cooling water, while a drain pipe 9 is located on one side for discharging cooling water. One end of the connecting pipe 22 is connected to an exhaust pipe 23, the other end of which is placed inside the sample cup 6. A square plate 19 is fixedly installed on one side of the fixing plate 2.

[0029] To clamp and fix the exhaust pipe 23, a first clamping mechanism was also designed. This mechanism includes six fixing frames 5, six clamping plates 21, and six second threaded rods 20. The fixing frames 5 are fixedly connected to the platform 1, the clamping plates 21 are slidably connected to the sliding grooves of the fixing frames 5 via sliders, and the second threaded rods 20 are threadedly connected to the fixing frames 5 and rotatably connected to the clamping plates 21 at one end, while the other end is provided with a second knob for rotation.

[0030] A second clamping mechanism was designed for holding and adjusting the distillation flask 3. This mechanism includes a U-shaped frame 10, a first arc-shaped plate 15, a second arc-shaped plate 18, and a first threaded rod 16. Both ends of the frame 10 are fixedly connected to a square plate 19, and one side of the second arc-shaped plate 18 is also fixedly connected to the square plate 19. The first threaded rod 16 is threadedly connected to the frame 10 and rotatably connected at one end to the first arc-shaped plate 15, with a first knob at the other end for easy rotation. To limit the rotation of the first arc-shaped plate 15, a telescopic rod 17 is also fixedly connected to one side of the frame 10, with its telescopic portion fixedly connected to the first arc-shaped plate 15.

[0031] This application is for the field of sulfur dioxide determination, but can also be used in other fields applicable to this application.

[0032] Example 2

[0033] refer to Figure 1-5 An improvement based on Example 1: A sulfur dioxide analyzer, which is used in the field of sulfur dioxide determination.

[0034] To provide cooling water, a water tank 11 is fixedly installed on one side of the platform 1. A water pump 14 is mounted on the top of the water tank 11, and the water pump 14 is connected to the water tank 11 via a water suction pipe 24. Furthermore, a housing 12 is fixed to the top of the water tank 11 via a bracket. The output end of the water pump 14 is connected to the housing 12, and the bottom ends of the six inlet pipes 8 and six outlet pipes 9 are all connected to the housing 12. To lower the water temperature, a semiconductor cooling chip is also fixedly installed on the inner wall of the water tank 11.

[0035] On the side where the first arc plate 15 and the second arc plate 18 are close to each other, some rubber pads are fixedly installed to increase friction and prevent the distillation flask 3 from slipping.

[0036] In addition, to facilitate adding water to and replacing the water in the water tank 11, a water inlet pipe is fixedly installed on the top of the water tank 11, and a cap is threaded onto the water inlet pipe for sealing. At the same time, a drain pipe 13 is also fixedly installed on one side of the water tank 11, and a first valve is installed on the drain pipe 13 to control the discharge of water.

[0037] To more precisely control the flow rate of cooling water, a second valve was installed on each of the six inlet pipes 8.

[0038] The working principle of the ceramic heater is the same as that of the authorized number CN209138667U, and the working principle of the semiconductor refrigeration chip is the same as that of the authorized number CN221537647U. Therefore, they will not be described in detail here. Furthermore, the ceramic heater and the semiconductor refrigeration chip are existing technologies. The specific model and specifications can be selected according to actual needs.

[0039] However, as is well known to those skilled in the art, the working principles and wiring methods of ceramic heaters, semiconductor cooling chips, and water pump 14 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.

[0040] 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 sulfur dioxide analyzer, characterized in that, The system includes an L-shaped platform (1), a first clamping mechanism, and a second clamping mechanism. A fixing plate (2) is fixedly installed on one side of the top of the platform (1). Multiple sample cups (6) are placed on one side of the top of the platform (1). Several grooves are opened on one side of the top of the platform (1). A ceramic heater is fixedly installed on the inner wall of the top of the groove. A double-necked beaker (4) is placed in the heating part of the ceramic heater. The top of the double-necked beaker (4) is provided with a first opening and a second opening. A sealing ring is fixedly installed on the inner wall of both the first opening and the second opening. A nitrogen tube (7) and a sulfur dioxide tube are respectively inserted into the first opening and the second opening. A distillation flask (3) is fixedly sleeved on the outside of the sulfur dioxide tube. A connecting pipe (22) is fixedly installed on one side of the sulfur dioxide tube and connected to it. The distillation flask (3), connecting pipe (22) and sulfur dioxide pipe are integrated into one structure. The top of the distillation flask (3) is fixedly provided with an inlet pipe (8) for entering cooling water. The side of the distillation flask (3) is fixedly provided with a drain pipe (9) for discharging cooling water. One end of the connecting pipe (22) is fixedly provided with an exhaust pipe (23). The other end of the exhaust pipe (23) is placed inside the sample cup (6). A square plate (19) is fixedly provided on one side of the fixing plate (2). The first clamping mechanism is provided on one side of the platform (1) for clamping and fixing one end of the exhaust pipe (23) after it is taken out from the sample cup (6). The second clamping structure is provided on one side of the square plate (19) for clamping and fixing the distillation flask (3) after it is adjusted up and down.

2. The sulfur dioxide analyzer according to claim 1, characterized in that, The first clamping mechanism includes six fixed frames (5), six clamping plates (21) and six second threaded rods (20). One side of each of the six fixed frames (5) is fixedly connected to one side of the platform (1). One side of each of the six clamping plates (21) is fixedly provided with a slider. A groove is opened on the inner wall of one side of the fixed frame (5). One side of the slider is slidably connected to the inner wall of the groove. The six second threaded rods (20) are threadedly connected to the six fixed frames (5) respectively. One end of the second threaded rod (20) is rotatably connected to one side of the clamping plate (21). The other end of the second threaded rod (20) is fixedly provided with a second knob to facilitate the rotation of the second threaded rod (20).

3. The sulfur dioxide analyzer according to claim 1, characterized in that, The second clamping mechanism includes a frame (10), a first arc plate (15), a second arc plate (18), and a first threaded rod (16). The frame (10) is U-shaped. Both ends of the frame (10) are fixedly connected to one side of a square plate (19). One side of the second arc plate (18) is fixedly connected to one side of the square plate (19). The first threaded rod (16) is threadedly connected to the frame (10). One end of the first threaded rod (16) is rotatably connected to one side of the first arc plate (15). The distillation bottle (3) is located between the first arc plate (15) and the second arc plate (18). The other end of the first threaded rod (16) is fixedly provided with a first knob to facilitate the rotation of the first threaded rod (16). One inner wall of one side of the frame (10) is fixedly provided with a telescopic rod (17) for limiting the rotation of the first arc plate (15). The telescopic part of the telescopic rod (17) is fixedly connected to one side of the first arc plate (15).

4. A sulfur dioxide analyzer according to claim 1, characterized in that, A water tank (11) is fixedly installed on one side of the platform (1). A water pump (14) is fixedly installed on the top of the water tank (11). A water pump (24) is fixedly installed at the inlet of the water pump (14). One end of the water pump (24) is fixedly connected to the bottom side of the water tank (11) and communicates with it. A box body (12) is fixedly installed on the top of the water tank (11) by a bracket. The outlet of the water pump (14) is fixedly connected to the bottom side of the box body (12) and communicates with it. The bottom ends of the six water inlet pipes (8) are all fixedly connected to the top of the box body (12). The water inlet pipes (8) are connected to the box body (12). The bottom ends of the six water outlet pipes (9) are all fixedly connected to the top of the box body (12). The water outlet pipes (9) are connected to the box body (12). A semiconductor cooling chip for cooling the water is fixedly installed on the inner wall of the water tank (11). A second valve is installed on each of the six water inlet pipes (8).

5. A sulfur dioxide analyzer according to claim 3, characterized in that, Both the first arc plate (15) and the second arc plate (18) have rubber pads fixedly installed on their sides for anti-slip purposes.

6. A sulfur dioxide analyzer according to claim 4, characterized in that, A water inlet pipe is fixedly installed on the top of the water tank (11), and a cover is threaded onto the water inlet pipe. A drain pipe (13) is fixedly installed on one side of the water tank (11) to facilitate the replacement of the water in the water tank (11). A first valve is installed on the drain pipe (13).

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