Exhaust structure capable of collecting waste heat of rotary evaporator

Abstract

The utility model discloses a rotary evaporator exhaust structure capable of collecting waste heat, which relates to the technical field of rotary evaporators and comprises a water bath kettle, a waste heat recovery mechanism is arranged at the top of the water bath kettle, a filtering mechanism is arranged in the waste heat recovery mechanism, and the waste heat recovery mechanism comprises a blocking cover arranged at the top of the water bath kettle. A mounting pipe is fixed to the top of the outer side of the blocking cover in a penetrating mode, and an absorption cover is arranged at the bottom of the mounting pipe. According to the exhaust structure capable of collecting waste heat of the rotary evaporator, through starting of the air pump, negative pressure is generated, steam generated in the heating process is fed into the air outlet nozzle through the air inlet nozzle and enters the connecting pipe, heat preservation is conducted through the heat preservation cotton, heat loss in the flowing process is avoided, and then the steam flows into the water bath kettle again through the backflow pipe; water is heated through heat in water vapor, the heat is recycled, energy is saved, water vapor loss is avoided, and water resources are saved.

Description

Technical Field

[0001] This utility model relates to the field of rotary evaporator technology, specifically to an exhaust structure for a rotary evaporator that can collect waste heat. Background Technology

[0002] A rotary evaporator, also known as a rotary distillation apparatus, is a commonly used laboratory device. It consists of a motor, distillation flask, heating pan, and condenser, and is primarily used for the continuous distillation of volatile solvents under reduced pressure. It is applied in chemical, chemical engineering, and biopharmaceutical fields, and is suitable for reflux operations, rapid evaporation of large quantities of solvent, concentration of trace components, and reaction processes requiring stirring.

[0003] In current rotary evaporators, the water bath is usually directly exposed during heating, and the steam generated during the heating process is directly discharged into the air, causing heat loss and waste. Furthermore, the amount of water decreases after evaporation, which also leads to waste. To address this, we have proposed an exhaust structure for rotary evaporators that can collect waste heat. Utility Model Content

[0004] The purpose of this invention is to provide an exhaust structure for a rotary evaporator that can collect waste heat, in order to solve the problems mentioned in the prior art, where the water bath of the current rotary evaporator is usually directly exposed to the outside during heating, and the steam generated during the heating process is directly discharged into the air, causing heat loss and waste, and the amount of water after evaporation is reduced, which easily leads to waste.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rotary evaporator exhaust structure for collecting waste heat, including a water bath, wherein a waste heat recovery mechanism is provided on the top of the water bath, and a filter mechanism is provided inside the waste heat recovery mechanism. By utilizing the filter mechanism, filtration is performed during gas flow to prevent dust and impurities from the outside air from mixing with water vapor and entering the air pump, thus preventing damage, improving the practicality of the device, and facilitating the disassembly and assembly of the filter screen for subsequent cleaning.

[0006] The waste heat recovery mechanism includes a baffle placed on top of the water bath. An installation pipe is fixed through the top outer side of the baffle, and an absorption cover is provided at the bottom of the installation pipe. An air pump is fixed at the top of the installation pipe, with an air inlet and an air outlet fixed at the air pump's inlet. A return pipe is fixed through the bottom outer side of the baffle, and a connecting pipe is connected to the outside of the air outlet. Insulation cotton is provided on the outside of the connecting pipe. By utilizing the waste heat recovery mechanism, the heat in the water vapor is used to heat the water, allowing for the reuse of heat, saving energy, and preventing water vapor loss, thus conserving water resources.

[0007] Preferably, the outlet end of the connecting pipe is connected to the inlet end of the return pipe, and the connecting pipe is a flexible tube, so that the discharged water vapor can re-enter the water bath through the return pipe.

[0008] Preferably, the air inlet nozzle extends through the top inner side of the mounting pipe, and the air inlet nozzle is fixedly connected to the mounting pipe, allowing steam to enter the air inlet nozzle.

[0009] Preferably, the filtration mechanism includes L-shaped grooves symmetrically formed on the inner sidewall of the absorption cover, a baffle is fixed to the inner sidewall of the absorption cover, a locking block is connected inside the L-shaped groove, and a filter screen is fixed between two locking blocks.

[0010] Preferably, the filtration mechanism further includes a mounting shell fixed to the top of the filter screen, a compression spring fixed in the middle of the bottom of the inner cavity of the mounting shell, a stop block fixed to the top of the compression spring, a limit block symmetrically fixed to the bottom of the outer side wall of the stop block, and a limit groove symmetrically opened through the outer side wall of the mounting shell.

[0011] Preferably, the limiting block slides inside the limiting groove, and the outer wall of the limiting block is in contact with the inner wall of the limiting groove to limit the abutment and prevent the abutment from twisting when the filter screen is rotated.

[0012] Preferably, the diameter of the filter screen is equal to the inner diameter of the absorption cover, so that the outer wall of the filter screen fits against the inner wall of the absorption cover.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this application, the waste heat recovery mechanism is used to generate negative pressure by starting the air pump. The steam generated during the heating process is sent from the air inlet to the air outlet and into the connecting pipe. It is then insulated by heat insulation cotton to prevent heat loss during the flow. Afterward, it flows back into the water bath through the return pipe, using the heat in the steam to heat the water. This heat is reused, saving energy and preventing water loss, thus conserving water resources.

[0015] 2. In this application, the filter mechanism is designed so that during filter installation, the filter screen is pressed by inserting a locking block into the opening of the L-shaped groove, causing the abutment block to contact the stop rod. This causes the abutment block to retract inside the mounting housing, compressing the compression spring. Then, the filter screen is rotated so that the locking block is positioned inside the L-shaped groove, loosening the filter screen. The reaction force of the compression spring causes the abutment block to press against the stop rod, thus pressing the locking block against the L-shaped groove and fixing the filter screen in place. This completes the installation. The filter screen filters air during flow, preventing dust and impurities from the outside air from mixing with water vapor and entering the air pump, thus preventing damage and improving the practicality of the device. It also facilitates the disassembly and assembly of the filter screen for subsequent cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the waste heat recovery mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the connecting pipe installation structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the stop bar installation structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the mounting structure of the abutment of this utility model.

[0021] The following are the labeling elements in the diagram: 100, water bath; 200, waste heat recovery mechanism; 210, baffle; 220, mounting pipe; 230, absorption hood; 240, air pump; 241, air inlet; 242, air outlet; 250, return pipe; 260, connecting pipe; 270, insulation cotton; 300, filtration mechanism; 310, L-shaped groove; 320, baffle bar; 330, filter screen; 340, locking block; 350, mounting shell; 360, compression spring; 370, stop block; 380, limiting block; 390, limiting groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figures 1-5 As shown, this utility model provides a technical solution for an exhaust structure of a rotary evaporator that can collect waste heat, including a water bath 100, a waste heat recovery mechanism 200 on the top of the water bath 100, and a filter mechanism 300 inside the waste heat recovery mechanism 200.

[0024] Please see Figure 2 and Figure 3The waste heat recovery mechanism 200 includes a baffle 210 placed on top of the water bath 100. An installation pipe 220 is fixedly connected to the top outer side of the baffle 210. An absorption cover 230 is installed at the bottom of the installation pipe 220. An air pump 240 is fixed to the top of the installation pipe 220. An air inlet 241 is fixed to the air inlet of the air pump 240, and an air outlet 242 is fixed to the air outlet of the air pump 240. A return pipe 250 is fixedly connected to the bottom outer side of the baffle 210. A connecting pipe 260 is connected to the outside of the air outlet 242, and insulation cotton 270 is installed on the outside of the connecting pipe 260. The outlet end of the connecting pipe 260 is connected to the inlet end of the return pipe 250, and the connecting pipe... 260 is a flexible hose; the air inlet 241 passes through the top of the inner side of the mounting pipe 220, and the air inlet 241 is fixedly connected to the mounting pipe 220; by using the waste heat recovery mechanism 200, the air pump 240 is started to generate negative pressure, and the steam generated during the heating process is sent through the air inlet 241 into the air outlet 242, and enters the interior of the connecting pipe 260. It is kept warm by the insulation cotton 270 to prevent heat loss during the flow process. Then it flows back into the water bath 100 through the return pipe 250, and uses the heat in the water vapor to heat the water, which reuses the heat, saves energy, and avoids the loss of water vapor, thus saving water resources.

[0025] Please see Figure 4 and Figure 5The filtration mechanism 300 includes L-shaped grooves 310 symmetrically formed on the inner wall of the absorption cover 230. A stop bar 320 is fixed to the inner wall of the absorption cover 230. A locking block 340 is connected inside the L-shaped groove 310, and a filter screen 330 is fixed between the two locking blocks 340. The filtration mechanism 300 also includes a mounting shell 350 fixed to the top of the filter screen 330. A compression spring 360 is fixed to the middle of the bottom of the inner cavity of the mounting shell 350. A stop block 370 is fixed to the top of the compression spring 360. Limiting blocks 380 are symmetrically fixed to the bottom of the outer wall of the stop block 370. Limiting grooves 390 are symmetrically formed through the outer wall of the mounting shell 350. The limiting blocks 380 slide inside the limiting grooves 390, and the outer wall of the limiting blocks 380 is in contact with the inner wall of the limiting grooves 390. The diameter of the filter screen 330 is equal to the inner diameter of the absorption cover 230. In the configuration of 300, when installing the filter screen 330, the locking block 340 is embedded in the opening of the L-shaped groove 310, and the filter screen 330 is squeezed, causing the abutment block 370 to contact the stop rod 320. This causes the abutment block 370 to retract inside the mounting shell 350, compressing the compression spring 360. Then, the filter screen 330 is rotated, so that the locking block 340 is located inside the L-shaped groove 310, loosening the filter screen 330. Through the reaction force of the compression spring 360, the abutment block 370 presses against the stop rod 320, thereby pressing the locking block 340 against the L-shaped groove 310, fixing the filter screen 330, and completing the installation. The filter screen 330 filters the air during airflow, preventing dust and impurities from the outside air from mixing with water vapor and entering the air pump 240, preventing damage, improving the practicality of the device, and facilitating the disassembly and cleaning of the filter screen 330.

[0026] In use, this invention works as follows: During evaporation, the evaporation flask is first connected to the rotary evaporator through the through-hole on the baffle 210. Then, the evaporation flask is positioned inside the water bath 100, with the baffle 210 positioned on top of the water bath 100. The water bath 100 is then started for heating. While steam is being generated, the air pump 240 is activated. The activation of the air pump 240 creates negative pressure, directing the steam generated during heating through the air inlet 241 into the air outlet 242, and into the connecting pipe 260. The steam is then insulated by the insulation cotton 270 to prevent heat loss during flow. Afterward, the steam flows back into the water bath 100 through the return pipe 250, utilizing the heat from the steam to heat the water. This heat reuse saves energy and prevents water loss, conserving water resources. During gas flow, the filter screen 330 filters the steam, preventing dust and impurities from the outside air from mixing with the steam and entering the air pump. In step 240, to prevent damage, when the filter screen 330 needs cleaning, rotate the filter screen 330 to deflect the locking block 340, thereby positioning the locking block 340 at the opening of the L-shaped groove 310. The return of the compression spring 360 causes the abutment 370 to return to its original position, pushing the filter screen 330 out to complete disassembly and cleaning. After cleaning, reinstall the filter screen 330 by inserting the locking block 340 into the opening of the L-shaped groove 310 and pressing... The filter screen 330 is rotated so that the stop block 370 contacts the stop rod 320, causing the stop block 370 to retract inside the mounting housing 350 and compress the compression spring 360. Then, the filter screen 330 is rotated so that the locking block 340 is located inside the L-shaped groove 310, loosening the filter screen 330. Through the reaction force of the compression spring 360, the stop block 370 is pressed against the stop rod 320, thereby causing the locking block 340 to press against the L-shaped groove 310, fixing the filter screen 330 and completing the installation.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rotary evaporator exhaust structure that can collect waste heat, characterized by: Including a water bath (100), the top of the water bath (100) is provided with a waste heat recovery mechanism (200), the inside of the waste heat recovery mechanism (200) is provided with a filter mechanism (300); The waste heat recovery mechanism (200) includes a cover (210) placed on the top of the water bath (100), the outer top of the cover (210) is fixed with a mounting pipe (220), the bottom of the mounting pipe (220) is provided with an absorption cover (230), the top of the mounting pipe (220) is fixed with an air pump (240), the air inlet of the air pump (240) is fixed with an air inlet nozzle (241), the air outlet of the air pump (240) is fixed with an air outlet nozzle (242), the outer bottom of the cover (210) is fixed with a return pipe (250), the outer side of the air outlet nozzle (242) is connected with a connecting pipe (260), the outer side of the connecting pipe (260) is provided with thermal insulation cotton (270).

2. The exhaust structure of the rotary evaporator capable of collecting residual heat according to claim 1, characterized by: The outlet end of the connecting pipe (260) is connected with the inlet end of the return pipe (250), and the connecting pipe (260) is a hose.

3. The exhaust structure of the rotary evaporator capable of collecting residual heat according to claim 1, characterized by: The air inlet nozzle (241) penetrates the inner top of the mounting pipe (220), and the air inlet nozzle (241) and the mounting pipe (220) are fixedly connected.

4. The exhaust structure of the rotary evaporator capable of collecting residual heat according to claim 1, characterized by: The filter mechanism (300) includes an L-shaped slot (310) symmetrically opened in the inner side wall of the absorption cover (230), the inner side wall of the absorption cover (230) is fixed with a stop rod (320), the inside of the L-shaped slot (310) is connected with a clamping block (340), two clamping blocks (340) are fixed with a filter screen (330).

5. The exhaust structure of a rotary evaporator capable of collecting waste heat according to claim 4, characterized by: The filter mechanism (300) further includes an installation shell (350) fixed to the top of the filter screen (330), a compression spring (360) is fixed to the inner cavity bottom of the installation shell (350), the top end of the compression spring (360) is fixed with a stop block (370), the outer side wall bottom of the stop block (370) is symmetrically fixed with a limiting block (380), and the outer side wall of the installation shell (350) is symmetrically fixed with a limiting slot (390).

6. The exhaust structure of a rotary evaporator capable of collecting waste heat according to claim 5, characterized by: The limiting block (380) slides in the limiting slot (390), and the outer side wall of the limiting block (380) is attached to the inner side wall of the limiting slot (390).

7. The exhaust structure of the rotary evaporator capable of collecting waste heat according to claim 5, characterized by: The diameter of the filter screen (330) is equal to the inner diameter of the absorption cover (230).

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