A filtration separation device for alcohol recovery

Abstract

The utility model belongs to the technical field of suction filtration separation device, concretely relates to a kind of suction filtration separation device of alcohol recovery, including base, the upper end left side of base is placed with suction filtration bottle, the bottle body of suction filtration bottle is connected with the setting of connecting mouth, the inside plug-in of the nozzle of suction filtration bottle is connected with burette, the wide mouth inside of burette is fixedly connected with filter disc, the upper surface of filter disc is placed with filter paper, the upper end right side of base is placed with safety bottle, the top of safety bottle is connected with the setting of two connecting ports. By setting safety bottle in the right side of suction filtration bottle, for the transition between suction filtration bottle and suction pump, the combination of connecting pipe and flared pipe is set between suction filtration bottle and safety bottle, and anti-backflow mechanism is set in flared pipe, when suction pump stops, spring drives plug to quickly close conical tube narrow mouth, prevent liquid backflow, in turn effectively avoid alcohol backflow pollution suction filtration bottle or damage pump body, prolong the service life of device.

Description

Technical Field

[0001] This solution belongs to the field of vacuum filtration separation devices, specifically involving a vacuum filtration separation device for alcohol recovery. Background Technology

[0002] In the production and quality inspection of lithium carbonate, particle size analysis is a crucial step in assessing product quality. Alcohol (anhydrous ethanol) is an indispensable dispersion medium in sample pretreatment. In traditional testing procedures, a whole bottle of alcohol is consumed for each batch of samples to undergo particle size analysis. The used alcohol is typically discharged directly as waste, resulting in significant reagent waste, increased procurement costs, and increased hazardous waste disposal pressure.

[0003] To reduce the pressure of alcohol usage, laboratories typically equip themselves with vacuum filtration devices. Alcohol solutions containing lithium carbonate particles are placed in these devices for separation, achieving recycling. A search revealed that invention patent CN106823514A discloses a vacuum filtration device. This device includes a funnel, a filter flask, a filter cap, and a filter membrane. The filter cap is screwed onto the mouth of the filter flask, and the neck of the funnel is screwed onto the filter cap. The filter membrane is placed on the upper surface of the filter cap and located inside the neck of the funnel. The liquid to be filtered can pass sequentially from the funnel through the filter membrane and the filter holes into the interior of the filter flask. This solves the problems of air leakage between the funnel and the filter flask in ordinary vacuum filtration devices, and the inconvenience of collecting the filter membrane.

[0004] In existing technologies, filter paper is placed directly inside the Buchner funnel, which is prone to displacement or wrinkling under the negative pressure of vacuum filtration, leading to decreased filtration efficiency or even experimental failure. Furthermore, the lack of an effective backflow prevention design means that liquid can easily be drawn back when vacuuming stops, contaminating the filtrate, damaging the equipment, and threatening operational safety. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this solution is to provide a vacuum filtration separation device for alcohol recovery, which solves the problem of filter paper wrinkling in existing vacuum filtration separation devices, and also addresses the lack of an effective anti-backflow design.

[0006] To achieve the above objectives, this solution provides an alcohol recovery filtration separation device, including a base. A filtration bottle is placed on the upper left side of the base. A connecting nozzle is connected to the body of the filtration bottle. A Buchner funnel is inserted into the inner side of the nozzle of the filtration bottle. A filter plate is fixedly connected to the wide mouth of the Buchner funnel. Filter paper is placed on the upper surface of the filter plate. A safety bottle is placed on the upper right side of the base. Two connecting ports are connected to the top of the safety bottle. A connecting tube is fixedly connected to the end of the connecting nozzle. The connecting tube is L-shaped. The vertical part of the connecting tube is inserted into the left connecting port. A flared tube is connected to the end of the connecting tube. An anti-backflow mechanism is provided inside the flared tube. An air outlet tube is inserted into the inner side of the right connecting port.

[0007] The principle of this solution is as follows: First, place the filter paper flat on the filter plate inside the Buchner funnel. Screw the pressure ring into the wide opening of the Buchner funnel using the threaded screws, and tighten it clockwise with the handle to evenly press the bottom of the pressure ring against the edge of the filter paper, ensuring the filter paper remains flat and wrinkle-free. Then, insert one end of the outlet tube into the connection port on the right side of the safety bottle, and connect the other end to the vacuum pump via a hose. Pour the alcohol solution containing lithium carbonate particles into the Buchner funnel and start the vacuum pump. Under negative pressure, the alcohol flows through the filter paper into the filtration flask. The filtered alcohol then enters the safety bottle through the connecting tube and the anti-backflow mechanism. When the vacuum pump stops, the spring of the anti-backflow mechanism pushes the slide rod to seal the narrow opening of the conical tube, preventing liquid backflow. The pure alcohol in the safety bottle is then collected and can be reused for particle size analysis.

[0008] The technical advantages of this solution are as follows: By setting a pressure ring and a handle inside the wide opening of the Buchner funnel, the filter paper can be effectively fixed, preventing displacement or wrinkling of the filter paper due to pressure changes during the filtration process, thus ensuring stable and reliable filtration results. Specifically, the pressure ring is threaded into the Buchner funnel, and the handle facilitates tightening and disassembly, thereby pressing the filter paper evenly onto the filter plate, making it less prone to deformation or damage, improving the continuity and efficiency of alcohol recovery, and making it suitable for frequent laboratory filtration operations.

[0009] A safety bottle is installed on the right side of the filtration flask to serve as a transition between the filtration flask and the vacuum pump. A combination of a connecting pipe and a flared pipe is installed between the filtration flask and the safety bottle. An anti-backflow mechanism is installed inside the flared pipe. When the vacuum pump stops, the spring drives the plug to quickly close the narrow opening of the conical tube, preventing liquid backflow. This effectively avoids alcohol backflow that could contaminate the filtration flask or damage the pump body, thus extending the service life of the device.

[0010] Furthermore, a pressure ring is threadedly connected to the wide-mouthed inner side of the Buchner funnel, above the filter disc. The bottom of the pressure ring contacts the filter paper, and two symmetrically arranged handles are fixedly connected to the upper end of the pressure ring. The pressure ring can be screwed into the Buchner funnel using the handles, pressing the filter paper and preventing wrinkles from forming.

[0011] Furthermore, a second rubber stopper is fixedly connected to the outer side of the narrow opening of the Buchner funnel, and the second rubber stopper is slidably connected to the inner side of the mouth of the suction flask. The second rubber stopper ensures a seal between the narrow opening of the Buchner funnel and the mouth of the suction flask.

[0012] Furthermore, a rubber plug is fixedly connected to the outer side of both the connecting pipe and the vent pipe, and the rubber plug is slidably connected to the inner side of the connection port. The rubber plug ensures a seal between the connecting pipe and the vent pipe and the connection port.

[0013] Furthermore, the anti-backflow mechanism includes a tapered tube fixedly connected to the inside of the flared tube. Two fixing rods are fixedly connected to the inside of the tapered tube, and a hollow sleeve is fixedly connected to the ends of the two fixing rods. A sliding rod is slidably connected to the inside of the hollow sleeve, and a plug is fixedly connected to the end of the sliding rod. The plug is slidably connected to the inside of the narrow opening at the lower end of the tapered tube. A spring is provided inside the hollow sleeve, with one end fixedly connected to the sliding rod and the other end fixedly connected to the inner surface of the hollow sleeve. By configuring the anti-backflow mechanism in conjunction with the safety bottle, backflow can be prevented when the vacuum pump is turned off.

[0014] Furthermore, the slide rod is provided with ball bearings, which are slidably connected to the inner wall of the hollow sleeve. The ball bearings reduce the relative friction between the slide rod and the hollow sleeve.

[0015] Furthermore, a retaining ring is fixedly connected to the outer side of the hollow sleeve, and a bellows is fixedly connected to both the retaining ring and the plug. The bellows provides rust protection for the spring. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is an embodiment of the present utility model. Figure 1 A schematic diagram of the Buchner funnel structure; Figure 3 This is an embodiment of the present utility model. Figure 1 A schematic diagram of the pressure ring structure; Figure 4 This is an embodiment of the present utility model. Figure 1 A front sectional view; Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged view of point A; Figure 6 This is an embodiment of the present utility model. Figure 4 Enlarged view of point A.

[0017] The following detailed explanation illustrates the specific implementation methods: The reference numerals in the accompanying drawings of the instruction manual include: base 1, filtration flask 2, connecting nozzle 201, safety bottle 3, connecting port 301, Buchner funnel 4, filter plate 5, filter paper 6, pressure ring 7, handle 8, anti-backflow mechanism 9, connecting pipe 10, flared pipe 11, rubber stopper one 12, air outlet pipe 13, rubber stopper two 14, conical tube 91, fixing rod 92, hollow sleeve 93, sliding rod 94, plug 95, spring 96, ball bearing 97, fixing ring 98, bellows 99. Detailed Implementation

[0018] The basic implementation examples are as follows: Figures 1-4 As shown: A filtration separation device for alcohol recovery includes a base 1, a filtration bottle 2 is placed on the upper left side of the base 1, a connecting nozzle 201 is provided on the body of the filtration bottle 2, a Buchner funnel 4 is inserted into the inside of the nozzle of the filtration bottle 2, and a rubber stopper 14 is fixedly connected to the outside of the narrow opening of the Buchner funnel 4, and the rubber stopper 14 is slidably connected to the inside of the opening of the filtration bottle 2. By using the rubber stopper 14, the narrow opening of the Buchner funnel 4 and the mouth of the filtration flask 2 can be sealed. A filter plate 5 is fixedly connected to the inside of the wide opening of the Buchner funnel 4. Filter paper 6 is placed on the upper surface of the filter plate 5. A safety bottle 3 is placed on the upper right side of the base 1. Two connection ports 301 are connected to the top of the safety bottle 3. A connecting tube 10 is fixedly connected to the end of the connecting nozzle 201. The connecting tube 10 is L-shaped. The vertical part of the connecting tube 10 is inserted into the left connection port 301. A flared tube 11 is connected to the end of the connecting tube 10. An air outlet tube 13 is inserted into the inside of the right connection port 301. The air outlet tube 13 can be connected to the input end of the air pump through a hose. Rubber stoppers 12 are fixedly connected to the outside of both the connecting tube 10 and the air outlet tube 13. Rubber stoppers 12 are slidably connected to the inside of the connection port 301. By using the rubber stopper 12, the connection between the connecting pipe 10 and the vent pipe 13 and the connection port 301 can be sealed.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A pressure ring 7 is threadedly connected to the wide-mouthed inner side of the Buchner funnel 4, above the filter disc 5. The bottom of the pressure ring 7 contacts the filter paper 6, and two symmetrically arranged handles 8 are fixedly connected to the upper end of the pressure ring 7. The pressure ring 7 can be screwed into the Buchner funnel 4 by rotating the handles 8, which can press the filter paper 6 and prevent wrinkles from forming.

[0020] like Figure 4 , Figure 6An anti-backflow mechanism 9 is provided on the inner side of the flared tube 11. This mechanism, in conjunction with the safety bottle 3, prevents backflow when the pump is turned off. The anti-backflow mechanism 9 includes a tapered tube 91 fixedly connected to the inner side of the flared tube 11. Two fixing rods 92 are fixedly connected to the inner side of the tapered tube 91. A hollow sleeve 93 is fixedly connected to the ends of the two fixing rods 92. A sliding rod 94 is slidably connected to the inner side of the hollow sleeve 93. A plug 95 is fixedly connected to the end of the sliding rod 94 and slidably connected to the inner side of the narrow opening at the lower end of the tapered tube 91. A spring 96 is provided on the inner side of the hollow sleeve 93. One end of the spring 96 is fixedly connected to the sliding rod 94, and the other end is fixedly connected to the inner surface of the hollow sleeve 93. A ball bearing 97 is provided on the rod of the sliding rod 94 and slidably connected to the inner wall of the hollow sleeve 93. By incorporating ball bearings 97, the relative friction between the slide bar 94 and the hollow sleeve 93 can be reduced. A retaining ring 98 is fixedly connected to the outer side of the hollow sleeve 93, and a bellows 99 is fixedly connected to both the retaining ring 98 and the plug 95. The bellows 99 provides rust protection for the spring 96.

[0021] The specific implementation process of this utility model is as follows: In use, firstly, place the filter paper 6 flat on the filter plate 5 inside the Buchner funnel 4, screw the pressure ring 7 into the wide mouth of the Buchner funnel 4 through the thread, and tighten it clockwise by turning the handle 8 so that the bottom of the pressure ring 7 evenly presses the edge of the filter paper 6, so that the filter paper 6 remains flat and wrinkle-free. Then, insert one end of the gas outlet pipe 13 into the connection port 301 on the right side of the safety bottle 3, and connect the other end to the vacuum pump through the hose. Pour the alcohol solution containing lithium carbonate particles into the Buchner funnel 4 and start the vacuum pump. The alcohol flows into the vacuum flask 2 after being filtered by the filter paper 6 under negative pressure. The filtered alcohol enters the safety bottle 3 through the connection pipe 10 and the anti-backflow mechanism 9. When the vacuum pump stops, the spring 96 of the anti-backflow mechanism 9 pushes the slide rod 94 to close the narrow opening of the cone tube 91 with the plug 95 to prevent liquid backflow. Then collect the pure alcohol in the safety bottle 3, which can be reused for particle size detection.

[0022] This design, by setting a pressure ring 7 and a handle 8 on the wide inner side of the Buchner funnel 4, can effectively fix the filter paper 6, preventing the filter paper 6 from shifting or wrinkling due to pressure changes during the filtration process, and ensuring stable and reliable filtration effect. Specifically, the pressure ring 7 is threaded into the Buchner funnel 4, and the handle 8 is easy to tighten and loosen, thereby pressing the filter paper 6 evenly onto the filter plate 5, making it less prone to deformation or damage, improving the continuity and efficiency of alcohol recovery, and is suitable for frequent laboratory filtration operations.

[0023] A safety bottle 3 is installed on the right side of the filtration bottle 2 to serve as a transition between the filtration bottle 2 and the vacuum pump. A combination of a connecting pipe 10 and a flared pipe 11 is installed between the filtration bottle 2 and the safety bottle 3. An anti-backflow mechanism 9 is installed inside the flared pipe 11. When the vacuum pump stops, the spring 96 drives the plug 95 to quickly close the narrow opening of the conical tube 91, preventing liquid backflow. This effectively avoids alcohol backflow from contaminating the filtration bottle 2 or damaging the pump body, thus extending the service life of the device.

[0024] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A filtration separation device for alcohol recovery, comprising a base, characterized in that: A filtration flask is placed on the upper left side of the base. A connecting nozzle is provided on the body of the filtration flask. A Buchner funnel is inserted into the inside of the nozzle of the filtration flask. A filter plate is fixedly connected to the wide mouth of the Buchner funnel. Filter paper is placed on the upper surface of the filter plate. A safety bottle is placed on the upper right side of the base. Two connecting ports are provided on the top of the safety bottle. A connecting tube is fixedly connected to the end of the connecting nozzle. The connecting tube is L-shaped. The vertical part of the connecting tube is inserted into the left connecting port. A flared tube is provided at the end of the connecting tube. An anti-backflow mechanism is provided inside the flared tube. An air outlet tube is inserted into the inside of the right connecting port.

2. The filtration separation device for alcohol recovery according to claim 1, characterized in that: A pressure ring is threadedly connected to the inside of the wide opening of the Buchner funnel and above the filter disc. The bottom of the pressure ring contacts the filter paper, and two symmetrically arranged handles are fixedly connected to the upper end of the pressure ring.

3. The filtration separation device for alcohol recovery according to claim 1, characterized in that: A second rubber stopper is fixedly connected to the outer side of the narrow opening of the Buchner funnel, and the second rubber stopper is slidably connected to the mouth of the suction filtration flask.

4. The filtration separation device for alcohol recovery according to claim 1, characterized in that: Both the connecting pipe and the vent pipe are fixedly connected to the outer side of the pipe body with a rubber plug, which is slidably connected to the inner side of the connecting port.

5. The filtration separation device for alcohol recovery according to claim 1, characterized in that: The anti-backflow mechanism includes a tapered tube fixedly connected to the inside of the flared tube. Two fixing rods are fixedly connected to the inside of the tapered tube. A hollow sleeve is fixedly connected to the ends of the two fixing rods. A sliding rod is slidably connected to the inside of the hollow sleeve. A plug is fixedly connected to the end of the sliding rod. The plug is slidably connected to the inside of the narrow opening at the lower end of the tapered tube. A spring is provided on the inside of the hollow sleeve. One end of the spring is fixedly connected to the sliding rod, and the other end of the spring is fixedly connected to the inner surface of the hollow sleeve.

6. The filtration separation device for alcohol recovery according to claim 5, characterized in that: The slide bar is equipped with ball bearings, which are slidably connected to the inner wall of the hollow sleeve.

7. The filtration separation device for alcohol recovery according to claim 5, characterized in that: A fixing ring is fixedly connected to the outer side of the hollow sleeve, and a corrugated pipe is fixedly connected to both the fixing ring and the plug.

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