A sulfur acid blowing device

Abstract

This utility model discloses a sulfide acidification aeration device, belonging to the technical field of water quality testing equipment. It includes an instrument body and multiple reaction components, each of which is mounted on the instrument body and includes an acid-adding and separating funnel. This sulfide acidification aeration device utilizes an adjustable clamping channel formed between a first and second clamping plate in a clamping assembly to hold the acid-adding and separating funnel. This allows the device to accommodate acid-adding and separating funnels of different specifications and capacities, solving the problem that traditional devices with fixed-arc clamps are only suitable for funnels of specific sizes. This significantly improves the compatibility and flexibility of the device. Users can adjust the distance between the first and second clamping plates using a limiting mechanism to quickly fix or loosen the acid-adding and separating funnel, making funnel replacement simple and quick, saving operation time and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of water quality testing equipment, and in particular to a sulfide acidification aeration device. Background Technology

[0002] In the field of water quality testing, sulfide content is one of the key indicators for assessing the degree of water pollution. Sulfides typically exist in water in the form of hydrogen sulfide, hydrosulfide ions, and sulfide ions. They not only produce unpleasant odors and are toxic to aquatic organisms, but may also affect human health through the food chain. Therefore, accurate detection of sulfide content in water is of great significance for water quality monitoring, environmental protection, and public health. The sulfide acidification aeration device, as the core equipment for sulfide pretreatment in water samples, plays a crucial role in the sulfide detection process. Its working principle is based on the chemical properties of sulfides. By adding acid (such as hydrochloric acid) to the water sample, the sulfides in the sample undergo an acidification reaction, converting into hydrogen sulfide gas. Since hydrogen sulfide is volatile, nitrogen is then used as a carrier gas to blow the generated hydrogen sulfide gas out of the water sample and introduce it into an absorption bottle. In the absorption bottle, the hydrogen sulfide is absorbed by a specific absorption liquid (such as zinc acetate solution), forming a stable compound that can be subsequently detected using quantitative analysis methods such as spectrophotometry and titration.

[0003] Currently, some traditional sulfide acidification blowing instruments have some shortcomings in use. In terms of clamping the acid addition and separation funnel, most devices use arc-shaped clamps with a fixed curvature for clamping. Although this fixed clamping method can fix the funnel to a certain extent, it is only suitable for funnels of specific specifications. When it is necessary to change to funnels of different capacities or shapes, the spacing and curvature of the clamps cannot be quickly adjusted, resulting in the inability to adapt to the new funnel. The equipment has poor compatibility, which requires operators to spend a lot of time debugging or replacing clamping parts when changing funnels. The operation is cumbersome and time-consuming, which seriously affects the efficiency of the testing work. Summary of the Invention

[0004] The purpose of this invention is to provide a sulfide acidification blowing device that solves the problem that existing equipment cannot adapt to funnels of different specifications when holding the acid addition and separation funnel.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sulfide acidification blowing device, comprising an instrument body and multiple reaction components, wherein the multiple reaction components are mounted on the instrument body, and each reaction component includes an acid addition and separation funnel, wherein the acid addition and separation funnel is mounted on the instrument body, and the instrument body is provided with multiple clamping components for clamping the acid addition and separation funnel, wherein each clamping component includes a mounting plate fixedly mounted on the front end of the instrument body, a first clamping plate is fixedly mounted on one side of the mounting plate, and a second clamping plate is rotatably mounted on one side of the first clamping plate, wherein a clamping channel for clamping the acid addition and separation funnel is formed between the first clamping plate and the second clamping plate, and a limiting mechanism for adjusting the distance between the first clamping plate and the second clamping plate is provided between the first clamping plate and the second clamping plate.

[0006] Preferably, the limiting mechanism includes a clamping bolt, a limiting nut, and a spring. Both the first clamping plate and the second clamping plate have through holes. One end of the clamping bolt passes through the through holes in the first clamping plate and the second clamping plate and is threadedly connected to the limiting nut. The spring is sleeved on the clamping bolt and compressed between the first clamping plate and the second clamping plate.

[0007] Preferably, silicone protective pads are fixed on opposite sides of both the first clamping plate and the second clamping plate.

[0008] Preferably, each reaction component further includes a three-necked reaction flask, an acid-adding separatory funnel, a rotor flowmeter, an absorption bottle, and a nitrogen delivery pipe. The instrument body is equipped with a water bath with multiple placement holes. The three-necked reaction flask is placed in the corresponding placement hole. The water bath is equipped with a heating mechanism for heating the three-necked reaction flask. The rotor flowmeter is fixed to the instrument body. Multiple placement frames are fixed to the front end of the instrument body. The absorption bottle is placed in the corresponding placement frame. The nitrogen delivery pipe is installed inside the instrument body. A connecting mechanism for connecting each reaction component is provided between the three-necked reaction flask, the acid-adding separatory funnel, the rotor flowmeter, the absorption bottle, and the nitrogen delivery pipe.

[0009] Preferably, the heating mechanism includes multiple heating tubes installed inside the water bath, a support plate is fixed inside the water bath, the reaction flask is placed on the support plate, and multiple water passage holes are evenly opened on the support plate.

[0010] Preferably, a drain valve is fixed at the drain outlet on one side of the water bath, and a water inlet valve is fixed at the water inlet on the other side of the water bath, for connecting to external water supply equipment.

[0011] Preferably, the connecting mechanism includes a connecting pipe, a first flexible hose, a second flexible hose, and a third flexible hose. One end of the connecting pipe is fixedly connected to the outlet of the nitrogen delivery pipe, and one end of the nitrogen delivery pipe passes through the instrument body for connecting to an external nitrogen tank. The other end of the connecting pipe is fixedly connected to the inlet of the rotor flowmeter. An electromagnetic control valve is installed on the connecting pipe. One end of the first flexible hose is tightly fitted onto the outlet of the rotor flowmeter. The other end of the first flexible hose passes through the instrument body and is tightly fitted with a first glass tube. The first glass tube is installed at the inlet of the three-necked reaction flask. One end of the second flexible hose is tightly fitted onto the outlet of the acid-adding separatory funnel. The other end of the second flexible hose is tightly connected to the acid-adding port of the three-necked reaction flask. One end of the third flexible hose is installed at the outlet of the three-necked reaction flask. The other end of the third flexible hose is fixed with a second glass tube. The second glass tube is installed on the absorption bottle and has an exhaust port.

[0012] Compared with the prior art, the advantages of this utility model are as follows: By forming an adjustable clamping channel between the first and second clamping plates in the clamping assembly for clamping the acid addition and separation funnel, the sulfide acidification blowing device can be compatible with acid addition and separation funnels of different specifications and capacities. This solves the problem that the fixed arc-shaped clamping block in traditional equipment is only suitable for funnels of specific specifications, greatly improving the compatibility and flexibility of the equipment. Users can adjust the distance between the first and second clamping plates through the set limiting mechanism, thereby quickly fixing or loosening the acid addition and separation funnel, making funnel replacement simple and quick, saving operation time and improving work efficiency. Attached Figure Description

[0013] Figure 1 A three-dimensional structural diagram of a sulfide acidification blowing device; Figure 2 This is a left-side three-dimensional structural diagram of a sulfide acidification blowing device; Figure 3 A schematic diagram of the three-dimensional structure of a sulfide acidification blowing device; Figure 4 A schematic diagram of the internal three-dimensional structure of a sulfide acidification blowing device. Figure 5 A schematic diagram of the three-dimensional structure of the reaction components of a sulfide acidification blowing device; Figure 6 A schematic diagram of the exploded three-dimensional structure of the reaction components of a sulfide acidification blowing device; Figure 7 A cross-sectional three-dimensional structural diagram of a water bath for a sulfide acidification blowing device; Figure 8This is a three-dimensional structural diagram of the clamping component of a sulfide acidification blowing device.

[0014] In the diagram: 1. Instrument body; 2. Three-necked reaction flask; 3. Acid-adding separatory funnel; 4. Rotor flow meter; 5. Absorption bottle; 6. Nitrogen delivery pipe; 7. Connecting pipe; 8. Electromagnetic control valve; 9. First flexible hose; 10. First glass tube; 11. Second flexible hose; 12. Third flexible hose; 13. Second glass tube; 14. Water bath; 15. Placement hole; 16. Support plate; 17. Heating tube; 18. Drain valve; 19. Inlet valve; 20. Placement frame; 21. PLC control module; 22. Mounting plate; 23. First clamping plate; 24. Second clamping plate; 25. Clamping bolt; 26. Spring; 27. Limiting nut; 28. Silicone protective pad. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0016] like Figure 1-8 As shown, a sulfide acidification blowing device includes an instrument body 1, a water bath 14, and multiple reaction components. The water bath 14 is integrated at the front end of the instrument body 1. The reaction components are evenly distributed on the surface of the instrument body 1. Each component is connected to the gas and liquid circuits through a connecting mechanism. The instrument body 1 has an L-shaped vertical frame structure. The front panel integrates the operation area and a fixed PLC control module 21, which can be a Siemens S7-200SMART, for unified control of parameters such as heating, gas supply, and acid addition. The water bath 14 is located at the lower front end of the instrument body 1. The water bath 14 is rectangular and its internal volume can accommodate 6 reaction components operating simultaneously. Multiple placement frames 20, made of ABS engineering plastic injection molding, are symmetrically arranged on the outer side of the front end of the instrument body 1 to fix the mechanisms in the reaction components. Their positions correspond one-to-one with the reaction components, facilitating the connection of the gas absorption pipeline.

[0017] The bottom of the water bath 14 is fixed with a support plate 16, which is made of stainless steel. The support plate 16 has water passage holes with a diameter of 10mm evenly opened on it, so that the bottom of the three-necked reaction flask 2 can be fully contacted with hot water to improve the heating uniformity. A heating tube 17 is installed below the support plate 16, and its power can be set to 500W. The water temperature is controlled by linkage with the PLC control module 21 through a temperature control probe (not shown). The water bath 14 has an inlet valve 19 on the left side to connect to an external water source and a drain valve 18 on the right side to connect to a waste liquid collection tank.

[0018] Each reaction assembly operates independently and has an identical structure, including the following components: a three-necked reaction flask 2, an acid-adding separatory funnel 3, a rotor flowmeter 4, an absorption bottle 5, and a nitrogen delivery pipe 6. All components are mounted on the surface of the instrument body 1 and interconnected through a connecting mechanism, which includes a connecting pipe 7, a first flexible tube 9, a first glass tube 10, a second flexible tube 11, a third flexible tube 12, and a second glass tube 13. The three-necked reaction flask 2 is made of 500mL glass and has three ports. One port is connected to the inlet of the first glass tube 10 for introducing nitrogen. The central port is connected to the acid-adding port of the second flexible tube 11, which is connected to the acid-adding separatory funnel 3. The second flexible tube 11 is made of acid- and alkali-resistant silicone tubing. The other port of the three-necked reaction flask 2 is connected to the third flexible tube 12. The three-necked reaction flask 2 can be placed in the placement hole 15 of the water bath 14. The diameter of the placement hole 15 matches the body of the three-necked reaction flask 2 to ensure stable immersion in water.

[0019] The acid-adding separatory funnel 3 has a capacity of 50mL or 100mL. The acid-adding separatory funnel 3 is fixed by a clamping assembly. The clamping assembly structure includes a mounting plate 22, which is fixed to the front end of the instrument body 1. The horizontal end is bolted to the instrument body 1. The first clamping plate 23 is fixed to the vertical end of the mounting plate 22. The second clamping plate 24 is rotatably connected to the first clamping plate 23 through a pin, forming an "opening and closing" clamping channel. Both the first clamping plate 23 and the second clamping plate 24 are arc-shaped structures, and the curvature matches the cylindrical surface of the neck of the acid-adding separatory funnel 3.

[0020] A limiting mechanism for adjusting the distance between the first clamping plate 23 and the second clamping plate 24 is provided. The limiting mechanism includes a clamping bolt 25, a limiting nut 27, and a spring 26. Both the first clamping plate 23 and the second clamping plate 24 have through holes. The clamping bolt 25 passes through the through holes of the first clamping plate 23 and the second clamping plate 24. The end of the clamping bolt 25 is threaded to the limiting nut 27. The spring 26 is sleeved in the middle of the clamping bolt 25. The spring 26 is in a compressed state. During adjustment, the limiting nut 27 is loosened, the second clamping plate 24 is rotated to adjust the distance, and then the limiting nut 27 is tightened to fix it. The spring 26 provides elastic clamping force. By rotating the limiting nut 27... The nut 27 can adjust the distance between the first clamping plate 23 and the second clamping plate 24. When the limiting nut 27 is tightened clockwise, the compression of the spring 26 increases, the distance between the first clamping plate 23 and the second clamping plate 24 decreases, and the acid adding and separating funnel 3 is clamped. When the nut 27 is loosened counterclockwise, the spring 26 rebounds, the distance between the first clamping plate 23 and the second clamping plate 24 increases, and the acid adding and separating funnel 3 is released. Through mechanical elasticity and threaded limiting, it can quickly adapt to acid adding and separating funnels 3 of different diameters. It has a wide range of compatibility and is suitable for acid adding and separating funnels 3 of different diameters. The silicone protective pad 28 is pasted on the inside of the first clamping plate 23 and the second clamping plate 24. It is 2mm thick and increases friction and prevents the glass acid adding and separating funnel 3 from being pinched.

[0021] The rotor flow meter 4 is fixed on the instrument body 1, with a range of 0-1000 mL / min, and is used to monitor the nitrogen flow rate. The nitrogen delivery pipe 6 is built into the instrument body 1. One end of the nitrogen delivery pipe 6 is connected to an external nitrogen tank with a pressure of 0.1-0.3 MPa. The other end of the nitrogen delivery pipe 6 is connected to the inlet of the rotor flow meter 4 through the connecting pipe 7. An electromagnetic control valve 8 is installed on the connecting pipe 7 and is controlled by a PLC to open and close. The outlet of the rotor flow meter 4 is connected to a first flexible hose 9. The other end of the first flexible hose 9 passes through the instrument body 1 and is connected to a first glass tube 10. The first glass tube 10 is inserted into the bottom of the three-necked reaction flask 2 to ensure uniform bubbling of nitrogen.

[0022] The absorption bottle 5 is placed in the placement frame 20 at the front end of the instrument body 1 and is connected to the gas outlet of the three-necked reaction bottle 2 through the second glass tube 13. One end of the third flexible tube 12 is connected to the gas outlet of the three-necked reaction bottle 2, and the other end is sleeved on the second glass tube 13. The upper end of the second glass tube 13 is provided with an exhaust port with a diameter of 2mm to ensure that hydrogen sulfide gas is fully introduced into the absorption liquid, such as zinc acetate solution.

[0023] In use, first inject the water sample into the three-necked reaction flask 2 and place it in the placement hole 15 of the water bath 14. Then, inject distilled water into the water bath through the water inlet valve 19, so that the liquid level submerges the bottom of the reaction flask by 20-30 mm. At the same time, adjust the clamping bolt 25 of the clamping assembly according to the specifications of the acid addition separatory funnel 3, loosen the limit nut 27, rotate the second clamping plate 24 to adjust the clamping plate spacing to adapt to different diameter acid addition separatory funnels 3, tighten the limit nut 27, and the spring 26 will compress to generate elastic clamping force, fixing the acid addition separatory funnel 3 in the clamping channel. The silicone protective pads 28 set on the inner side of the first clamping plate 23 and the second clamping plate 24 can prevent the acid addition separatory funnel 3 from being pinched and damaged. After fixing the acid addition separatory funnel 3, hydrochloric acid can be added into the acid addition separatory funnel 3.

[0024] Place the absorption bottle 5 into the placement frame 20, connect the third hose 12 to the second glass tube 13, and pre-add zinc acetate solution to the absorption bottle 5 to react with H2S to generate a stable compound. Start the heating tube 17 through the PLC control module 21 to raise the water bath temperature to 60℃. The water bath temperature can be preset. Open the electromagnetic control valve 8 and adjust the rotor flow meter 4 to stabilize the nitrogen flow rate at 500mL / min. Ventilate for 30s to exhaust the air in the reaction bottle.

[0025] Open the piston of the acid addition separatory funnel 3. The outlet of the acid addition separatory funnel 3 is connected to the acid addition port of the three-necked reaction flask 2 through the second hose 11. The second hose 11 is made of acid and alkali resistant silicone material to ensure safe delivery of acid. Hydrochloric acid is injected into the reaction flask through the second hose 11. The sulfides in the water sample react with the acid to generate hydrogen sulfide gas. Nitrogen gas blows the gas into the absorption bottle 5. The reaction time is set to 30 minutes and can be automatically timed by the PLC control module 21.

[0026] After the reaction is completed, the PLC control module 21 automatically shuts off the heating tube 17 and the solenoid control valve 8, opens the drain valve 18 to drain the wastewater from the water bath, injects clean water through the inlet valve 19 to clean the tank, disassembles the absorption bottle 5, and transfers it to the subsequent testing stage.

[0027] The basic principles, main features, and advantages of this utility model have been described above. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sulfide acidification blowing device, comprising an instrument body (1) and a plurality of reaction components, wherein the plurality of reaction components are mounted on the instrument body (1), characterized in that: Each of the reaction components includes an acid-adding separatory funnel (3), which is mounted on the instrument body (1). The instrument body (1) is provided with a plurality of clamping components for clamping the acid-adding separatory funnel (3). Each clamping component includes a mounting plate (22) fixedly mounted on the front end of the instrument body (1). A first clamping plate (23) is fixed on one side of the mounting plate (22), and a second clamping plate (24) is rotatably mounted on one side of the first clamping plate (23). A clamping channel for clamping the acid-adding separatory funnel (3) is formed between the first clamping plate (23) and the second clamping plate (24). A limiting mechanism for adjusting the distance between the first clamping plate (23) and the second clamping plate (24) is provided between the first clamping plate (23) and the second clamping plate (24).

2. The sulfide acidification blowing device according to claim 1, characterized in that: The limiting mechanism includes a clamping bolt (25), a limiting nut (27), and a spring (26). Both the first clamping plate (23) and the second clamping plate (24) have through holes. One end of the clamping bolt (25) passes through the through holes in the first clamping plate (23) and the second clamping plate (24) and is threadedly connected to the limiting nut (27). The spring (26) is sleeved on the clamping bolt (25) and compressed between the first clamping plate (23) and the second clamping plate (24).

3. A sulfide acidification blowing device according to claim 2, characterized in that: Silicone protective pads (28) are fixed on opposite sides of the first clamping plate (23) and the second clamping plate (24).

4. A sulfide acidification blowing device according to claim 1, characterized in that: Each of the reaction components further includes a three-necked reaction flask (2), an acid-adding separatory funnel (3), a rotor flowmeter (4), an absorption bottle (5), and a nitrogen delivery pipe (6). The instrument body (1) is provided with a water bath (14), and the water bath (14) has multiple placement holes (15). The three-necked reaction flask (2) is placed in the corresponding placement hole (15). The water bath (14) is provided with a heating mechanism for heating the three-necked reaction flask (2). The rotor flowmeter (4) is fixed on the instrument body (1). The front end of the instrument body (1) is fixed with multiple placement frames (20). The absorption bottle (5) is placed in the corresponding placement frame (20). The nitrogen delivery pipe (6) is installed inside the instrument body (1). A connecting mechanism for connecting each reaction component is provided between the three-necked reaction flask (2), the acid-adding separatory funnel (3), the rotor flowmeter (4), the absorption bottle (5), and the nitrogen delivery pipe (6).

5. A sulfide acidification blowing device according to claim 4, characterized in that: The heating mechanism includes multiple heating tubes (17) installed inside the water bath (14). A support plate (16) is fixed inside the water bath (14). The reaction flask is placed on the support plate (16). Multiple water passage holes are evenly opened on the support plate (16).

6. A sulfide acidification blowing device according to claim 5, characterized in that: A drain valve (18) is fixed at the drain outlet on one side of the water bath (14), and an inlet valve (19) is fixed at the inlet on the other side of the water bath (14) for connecting external water supply equipment.

7. A sulfide acidification blowing device according to claim 4, characterized in that: The connecting mechanism includes a connecting pipe (7), a first flexible hose (9), a second flexible hose (11), and a third flexible hose (12). One end of the connecting pipe (7) is fixedly connected to the outlet of the nitrogen delivery pipe (6). One end of the nitrogen delivery pipe (6) passes through the instrument body (1) and is used to connect to an external nitrogen tank. The other end of the connecting pipe (7) is fixedly connected to the inlet of the rotor flowmeter (4). An electromagnetic control valve (8) is installed on the connecting pipe (7). One end of the first flexible hose (9) is tightly fitted onto the outlet of the rotor flowmeter (4). The other end of the first flexible hose (9) passes through the instrument body (1) and... A first glass tube (10) is tightly fitted and installed at the air inlet of the three-necked reaction flask (2). One end of the second flexible tube (11) is tightly fitted at the outlet of the acid-adding separatory funnel (3). The other end of the second flexible tube (11) is tightly connected to the acid-adding port of the three-necked reaction flask (2). One end of the third flexible tube (12) is installed at the air outlet of the three-necked reaction flask (2). The other end of the third flexible tube (12) is fixed with a second glass tube (13). The second glass tube (13) is installed on the absorption bottle (5). An exhaust port is provided on the second glass tube (13).

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