Organic gas absorption device for experiment
By adopting an annular exhaust hole and piston column structure in the experimental organic gas absorption device, combined with a curved airway, the problems of insufficient gas contact and backflow were solved, and efficient organic gas absorption and purification were achieved.
Patent Information
- Application Number
- CN202521827464.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2035-08-27
AI Technical Summary
The existing experimental organic gas absorption device has the problems of insufficient contact between gas and washing liquid, low absorption efficiency and lack of anti-backflow structure.
An intake pipe structure with an annular exhaust hole and a piston column was designed, combined with a curved airway to ensure that the gas is dispersed into multiple bubbles and prolong its residence time in the washing liquid. At the same time, the cooperation of the spring and the piston column achieves air pressure balance to prevent backflow.
The mixing degree and contact area between organic gas and washing liquid are significantly improved, the absorption efficiency is improved, and the back suction phenomenon is effectively prevented, ensuring the stable operation of the device.
Smart Images
Figure CN223404688U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas absorption, in particular to an organic gas absorption device for experiments. Background Art
[0002] During chemical experiments, various organic gases are often generated, such as benzene, alcohols, aldehydes, and halogenated hydrocarbons. Directly releasing these gases into the air can not only pollute the laboratory environment but also pose a health risk to laboratory personnel and even create flammable and explosive safety hazards. Therefore, efficient absorption and purification of organic gases generated during experiments is a crucial step in laboratory safety management.
[0003] In the prior art, organic gas absorption mostly adopts a simple gas washing bottle structure, in which gas is passed into a bottle containing washing liquid to achieve absorption. However, this type of gas washing bottle structure generally has the following problems: first, the contact between gas and washing liquid is insufficient, and most of the bubbles directly float up. The contact area is small and the contact time is short, resulting in low absorption efficiency. Some organic gases are discharged before being fully absorbed. Second, there is a lack of an effective anti-backflow structure. When the gas flow rate suddenly decreases or the air pressure inside and outside the device is unbalanced, the washing liquid can easily flow back into the gas washing bottle through the air inlet pipe, causing reagent contamination or experiment interruption.
[0004] Therefore, it is necessary to provide a new experimental organic gas absorption device to solve the above technical problems. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides an organic gas absorption device for experiment.
[0006] The experimental organic gas absorption device provided by the utility model comprises a bottle body, a bottle mouth of the bottle body is inserted with a bottle plug, and an air inlet pipe and an exhaust pipe are fixedly installed on the bottle plug;
[0007] The bottom of the air intake pipe is a sealed structure, and a plurality of annularly distributed exhaust holes are opened near the bottom of the air intake pipe. A piston rod is provided in the air intake pipe for elastic connection and sealing the exhaust holes;
[0008] The air inlet pipe is sleeved with a rotatably connected mounting plate, and the outer surface of the mounting plate is provided with an integrally formed arc ring, and the arc ring is provided with a plurality of annularly distributed air cavities.
[0009] Preferably, the bottle body comprises a spherical bottle body, the top of the spherical bottle body is fixedly connected to the wide-mouth bottle body, and the bottom of the spherical bottle body is fixedly connected to the narrow-mouth bottle body.
[0010] Preferably, the mounting plate is sleeved on the annular groove provided on the air inlet pipe and is rotatably connected to the annular groove, and the mounting plate is located at the spherical bottle body, and the gap between the arc ring and the spherical bottle body constitutes an arc-shaped airway structure.
[0011] Preferably, the air inlet pipe extends to the narrow mouth of the bottle body, and a limiting ring is fixedly embedded in the air inlet pipe above the exhaust hole. A spring is provided at the bottom of the piston column, and the other end of the spring is fixedly connected to the bottom of the air inlet pipe, and the top of the piston column is against the limiting ring.
[0012] Preferably, the bottle stopper is installed at the bottle mouth of the wide-mouth bottle body.
[0013] Preferably, a drain valve is installed at the bottom of the narrow-mouth bottle.
[0014] Preferably, the exhaust pipe is close to the inner top wall of the bottle stopper.
[0015] Preferably, the washing liquid in the bottle overflows the mounting plate.
[0016] Compared with the related art, the experimental organic gas absorption device provided by the utility model has the following beneficial effects:
[0017] The utility model is that when organic gas enters the air intake pipe and gathers, the air pressure hits the piston rod, driving the piston rod to slide down along the air intake pipe and compress the spring. When the piston rod no longer seals the exhaust hole, the organic gas is able to enter the washing liquid, and the washing liquid absorbs and purifies the organic gas. When the gas flow of the organic gas decreases, the air pressure in the air intake pipe decreases, causing the spring to reset and the piston rod to seal the exhaust hole again, thereby achieving the purpose of preventing back suction. Since the multiple exhaust holes are arranged in a ring shape, the gas is dispersed into multiple bubbles to enter the washing liquid, thereby greatly improving the mixing degree and contact area of the organic gas and the washing liquid. The arc ring outside the mounting plate and the spherical bottle body form an arc-shaped airway. The gas needs to rise along the arc path to be discharged, thereby extending the residence time in the washing liquid and improving the absorption efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic structural diagram of a preferred embodiment of the experimental organic gas absorption device provided by the present invention;
[0019] Figure 2 for Figure 1 The cross-sectional structural diagram shown;
[0020] Figure 3 for Figure 2 The schematic diagram of the plane structure shown;
[0021] Figure 4 for Figure 2 A schematic cross-sectional view of the bottle stopper shown;
[0022] Figure 5 This is a structural schematic diagram of the installation disk provided by the utility model.
[0023] Numbers in the figure: 1. Bottle body; 11. Spherical bottle body; 12. Wide-mouth bottle body; 13. Narrow-mouth bottle body; 14. Drain valve; 2. Bottle stopper; 3. Air inlet pipe; 3a. Exhaust hole; 3b. Annular groove; 31. Limiting ring; 4. Exhaust pipe; 5. Piston column; 51. Spring; 6. Mounting plate; 61. Arc ring; 61a. Air cavity; 1-6a. Arc-shaped airway. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0025] The specific implementation of the present invention is described in detail below with reference to specific embodiments.
[0026] See also Figures 1 to 5 An embodiment of the present invention provides an experimental organic gas absorption device, which includes a bottle body 1, an air inlet pipe 3, an exhaust pipe 4, a piston column 5 and a mounting plate 6.
[0027] In the embodiments of the present invention, please refer to Figures 1 to 5 The bottle body 1 includes a spherical bottle body 11, the top of the spherical bottle body 11 is fixedly connected to a wide-mouth bottle body 12, and the bottom of the spherical bottle body 11 is fixedly connected to a narrow-mouth bottle body 13, and a drain valve 14 is installed at the bottom of the narrow-mouth bottle body 13;
[0028] A bottle stopper 2 is inserted into the bottle mouth of the bottle body 1. Specifically, the bottle stopper 2 is installed at the bottle mouth of the wide-mouth bottle body 12, and an air inlet pipe 3 and an exhaust pipe 4 are fixedly installed on the bottle stopper 2. The bottom of the air inlet pipe 3 is a sealing structure, and a plurality of annular exhaust holes 3a are provided near the bottom of the air inlet pipe 3. A piston column 5 is elastically connected and used to seal the exhaust holes 3a. Specifically, the air inlet pipe 3 extends to the narrow-mouth bottle body 13, and a limiting ring 31 is fixedly engaged with the air inlet pipe 3 above the exhaust holes 3a. A spring 51 is provided at the bottom of the piston column 5, and the other end of the spring 51 is fixedly connected to the bottom of the air inlet pipe 3. The top of the piston column 5 is against the limiting ring 31, and the exhaust pipe 4 is close to the inner top wall of the bottle stopper 2.
[0029] It should be noted that: when the gas is not being scrubbed, the piston column 5 is pressed against the limiting ring 31 under the elastic force of the spring 51. At this time, the piston column 5 blocks the exhaust hole 3a to achieve sealing of the exhaust hole 3a.
[0030] It should also be noted that: when the organic gas enters the intake pipe 3 and gathers, the air pressure hits the piston rod 5, driving the piston rod 5 to slide down along the intake pipe 3 and compress the spring 51. When the piston rod 5 no longer seals the exhaust hole 3a, the organic gas is able to enter the washing liquid and is absorbed and purified by the washing liquid. Since the multiple exhaust holes 3a are arranged in a ring shape, the gas is dispersed into multiple bubbles and enters the washing liquid, thereby greatly improving the mixing degree and contact area between the organic gas and the washing liquid. When the gas flow rate of the organic gas decreases, the air pressure in the intake pipe 3 decreases, causing the spring 51 to reset and the piston rod 5 to seal the exhaust hole 3a again, thereby achieving the purpose of preventing backflow.
[0031] It is worth noting that: when absorbing and purifying the organic gas generated during the experiment, multiple groups of the present application can be arranged in parallel, and the air inlet pipes 3 and the exhaust pipes 4 on the adjacent bottles 1 are connected through a conduit to achieve multiple absorption and purification of the organic gas, and the air inlet pipe 3 on the first bottle 1 is connected to the organic gas exhaust pipe generated during the experiment;
[0032] In addition, a micro air pressure regulating valve can be added to the connecting pipeline of the multi-stage bottle body 1 to balance the air pressure between the bottle bodies 1 in real time to ensure stable air intake. At the same time, a flow meter can be set at the end of the exhaust pipe 4 to facilitate monitoring of gas flow.
[0033] In this embodiment, the washing liquid stored in each bottle body 1 is a variety of types. For example, for non-polar organic gases (such as benzene, toluene, xylene and other aromatic hydrocarbons), activated carbon suspension (activated carbon powder mixed with water, concentration of 5%-10%) or carbon disulfide solution can be used; for polar organic gases (such as methanol, ethanol, formaldehyde and other alcohols, aldehydes), water or dilute sulfuric acid solution (concentration of 5%-10%) can be used. Polar gases are easily soluble in water, and dilute sulfuric acid can further absorb alkaline polar gases (such as amines); for halogenated hydrocarbon gases (such as chloroform, carbon tetrachloride, vinyl chloride, etc.), dilute sodium hydroxide solution (concentration of 5%-8%) can be used. Halogenated hydrocarbons can undergo hydrolysis reaction under alkaline conditions to generate water-soluble substances that are absorbed.
[0034] Among them, the surface of the piston rod 5 is wrapped with a wear-resistant and chemical-resistant sealing layer (such as a polytetrafluoroethylene coating), and the spring 51 uses a stainless steel or titanium alloy spring to improve corrosion resistance. At the same time, a polytetrafluoroethylene (PTFE) coating is applied to the surface of the spring 51 to enhance rust resistance.
[0035] In the embodiments of the present invention, please refer to Figures 1 to 5A rotatably connected mounting plate 6 is sleeved on the air inlet pipe 3. Specifically, the mounting plate 6 is sleeved on the annular groove 3b opened in the air inlet pipe 3 and is rotatably connected to the annular groove 3b. The mounting plate 6 is located at the spherical bottle body 11, and an integrally formed arcuate ring 61 is provided on the outer disk surface of the mounting plate 6. A plurality of annularly distributed air cavities 61a are opened on the arcuate ring 61, and the gap between the arcuate ring 61 and the spherical bottle body 11 constitutes an arcuate airway 1-6a structure, and the washing liquid in the bottle body 1 overflows the mounting plate 6.
[0036] It should be noted that the arc-shaped ring 61 outside the mounting plate 6 and the spherical bottle body 11 form an arc-shaped airway 1-6a. The gas needs to rise along the arc-shaped path and be discharged, which prolongs the residence time in the washing liquid and improves the absorption efficiency. Part of the gas gathered between the mounting plate 6 and the arc-shaped ring 61 can be discharged from the air cavity 61a to the arc-shaped airway 1-6a, and then rise along the arc-shaped path and be discharged, avoiding the accumulation of gas between the mounting plate 6 and the arc-shaped ring 61.
[0037] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.
[0038] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. An organic gas absorption device for experiment, characterized in that: It comprises a bottle body (1), a bottle mouth of the bottle body (1) is provided with a bottle stopper (2), and an air inlet pipe (3) and an air outlet pipe (4) are fixedly mounted on the bottle stopper (2); The bottom of the air intake pipe (3) is a sealed structure, and a plurality of annularly distributed exhaust holes (3a) are provided near the bottom of the air intake pipe (3). A piston rod (5) is provided in the air intake pipe (3) for elastic connection and sealing the exhaust holes (3a). The air inlet pipe (3) is sleeved with a rotatably connected mounting disk (6), and the outer disk surface of the mounting disk (6) is provided with an integrally formed arc-shaped ring (61), and the arc-shaped ring (61) is provided with a plurality of annularly distributed air cavities (61a).
2. The experimental organic gas absorption device according to claim 1, characterized in that: The bottle body (1) comprises a spherical bottle body (11), the top of the spherical bottle body (11) is fixedly connected to a wide-mouth bottle body (12), and the bottom of the spherical bottle body (11) is fixedly connected to a narrow-mouth bottle body (13).
3. The experimental organic gas absorption device according to claim 2, characterized in that: The mounting plate (6) is sleeved on the annular groove (3b) provided on the air inlet pipe (3) and is rotatably connected to the annular groove (3b), and the mounting plate (6) is located at the spherical bottle body (11), and the gap between the arc-shaped ring (61) and the spherical bottle body (11) forms an arc-shaped airway (1-6a) structure.
4. The experimental organic gas absorption device according to claim 2, characterized in that: The air inlet pipe (3) extends to the narrow-mouth bottle body (13), and a limit ring (31) is fixedly engaged with the air inlet pipe (3) above the exhaust hole (3a). A spring (51) is provided at the bottom of the piston column (5), and the other end of the spring (51) is fixedly connected to the bottom of the air inlet pipe (3), and the top of the piston column (5) is against the limit ring (31).
5. The experimental organic gas absorption device according to claim 2, characterized in that: The bottle stopper (2) is installed at the bottle mouth of the wide-mouth bottle body (12).
6. The experimental organic gas absorption device according to claim 2, characterized in that: A drain valve (14) is installed at the bottom of the narrow-mouth bottle body (13).
7. The experimental organic gas absorption device according to claim 1, characterized in that: The exhaust pipe (4) is close to the inner top wall of the bottle stopper (2).
8. The experimental organic gas absorption device according to claim 1, characterized in that: The washing liquid in the bottle body (1) overflows the mounting plate (6).