Distillation device for chemical industry

Abstract

The utility model belongs to the technical field of chemical engineering separation equipment, and particularly relates to a distillation device for chemical engineering, which comprises a frame body, and a feeding tank, an evaporation chamber, a motor, a light distillation collecting bottle, a heavy distillation collecting bottle, a heating mechanism, a cooling mechanism and a vacuumizing mechanism which are arranged on the frame body, the evaporation chamber is provided with a through hole, the through hole is rotatably connected with a film scraping device, a shell of the motor is connected with the frame body through a damping spring shock absorber, an output shaft of the motor is connected with a rotating shaft of the film scraping device through a flexible coupling, the evaporation chamber is provided with a plurality of groups of discharging ports, the light distillation collecting bottle and the heavy distillation collecting bottle are respectively communicated with the discharging ports, and the heating mechanism is communicated with the feeding tank. The utility model has the beneficial effects that the flexible installation of the motor is realized, the vibration impact on the inner cavity of the evaporation chamber is reduced, and the stable operation of the distillation device is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical separation equipment, in particular to a distillation device used in chemical industry. Background Art

[0002] Distillation is a very common separation technology in the chemical process. It separates the components of a mixture by condensing the steam generated by heating the mixture into liquid. Molecular distillation equipment is an efficient technical equipment for separating components of liquid mixtures. It achieves molecular-level separation by controlling temperature and pressure based on the difference in boiling points of different components at different temperatures.

[0003] In order to improve the separation efficiency, the existing distillation devices are mostly equipped with motor rotor driven scrapers, which can not only fully stir the downstream liquid layer, but also accelerate the renewal of the evaporation surface liquid layer, thereby strengthening the heat transfer and mass transfer process of the material. However, with the long-term operation of the equipment, the motor often vibrates, causing the scraper of the scraper to contact the bottom wall or side wall of the evaporation chamber, causing scratches or wear between parts, and even direct breakage of the scraper, causing damage to the equipment and shutdown. Utility Model Content

[0004] The utility model aims at the above-mentioned problems and specifically designs a distillation device for chemical industry, so as to realize the flexible installation of the motor, reduce the vibration impact on the inner cavity of the evaporation chamber, and ensure the stable operation of the distillation device.

[0005] To achieve the above-mentioned purpose, the utility model provides a distillation device for chemical industry, including a frame, and a feed tank, an evaporation chamber, a motor, a light distillation collecting bottle, a heavy distillation collecting bottle, a heating mechanism, a cooling mechanism and a vacuum mechanism installed on the frame, the discharge port of the feed tank is connected with the feed port of the evaporation chamber, the evaporation chamber is provided with a through hole, a scraper is rotatably connected to the through hole, the housing of the motor is flexibly connected to the frame, the output shaft of the motor is flexibly connected to the rotating shaft of the scraper, the evaporation chamber is provided with multiple groups of discharge ports, the light distillation collecting bottle and the heavy distillation collecting bottle are respectively connected to the discharge ports, the heating mechanism is connected to the feed tank, and the cooling mechanism and the vacuum mechanism are connected to the inner cavity of the evaporation chamber.

[0006] By adopting the above technical scheme, the frame is used to provide effective support to other components and increase structural stability; the feed tank is used to buffer the flow of compound liquid and ensure the stability of flow rate; the evaporation chamber provides distillation reaction space for the compound to ensure that the compound vapor heated by the heating mechanism reacts with the condensed gas transmitted by the cooling mechanism; the light distillation collecting bottle and the heavy distillation collecting bottle are used to collect compound condensates of different components; the motor is used to output power to the scraper, and the scraper is used to fully stir the compound and accelerate the distillation reaction process; the vacuum mechanism is used for vacuuming the evaporation chamber; the motor housing and the output shaft are both flexibly connected to avoid the vibration generated by the motor from being transmitted to the scraper and the evaporation chamber, reduce the mechanical loss caused by vibration or impact, and ensure the stable operation of the distillation device.

[0007] Furthermore, the motor is flexibly connected to the frame via a damping spring shock absorber.

[0008] Preferably, the film scraper comprises a rotating shaft and a scraper, the rotating shaft is connected to the output shaft of the motor via a flexible coupling, and the scraper is fixedly connected to the rotating shaft.

[0009] Preferably, the rotating shaft is rotatably connected to the frame body via a bearing, and shaft seals are installed on both sides of the bearing.

[0010] By adopting the above technical scheme, the damping spring shock absorber is used to isolate the vibration of the motor and the frame, isolate the impact and wear on the evaporation chamber, and reduce noise; the flexible coupling is used to connect the motor output shaft and the rotating shaft on the same axis, and the elastic elements therein are used to absorb vibration and compensate for the axis deviation, thereby ensuring that the motor transmits a smooth load to the rotating shaft, improving the smoothness of the scraper rotation, and adding safety shock-absorbing measures; the shaft seal is used to prevent high-pressure liquid or steam from leaking from the through hole, while preventing outside air from infiltrating, thereby improving the distillation effect.

[0011] Furthermore, the heating mechanism is an electric heater, and the heating end of the electric heater is connected to the feed tank.

[0012] Preferably, the cooling mechanism is a condenser, and one end of an outer tube opening of the condenser is connected to the vacuum pumping mechanism, and the other end is connected to the evaporation chamber.

[0013] Preferably, the vacuum pumping mechanism comprises a vacuum pump and a diffusion pump, and the vacuum pump is sequentially connected to the diffusion pump and the condenser through a pipeline.

[0014] By adopting the above technical scheme, the heating mechanism uses electric energy to achieve the heating effect, outputs stable heat to the feed tank, and heats, insulates and heats the flowing compound medium; the cooling mechanism is used to promote the condensation of the compound, absorb and take away the heat of the steam; the vacuum mechanism is used to establish and maintain the vacuum environment of the evaporation chamber, remove impurities in the evaporation chamber, avoid oxidation or contamination of the compound, and ensure the final distillation quality.

[0015] In summary, the utility model has the following advantages and beneficial technical effects:

[0016] 1. In the utility model, the housing and output shaft of the motor are both flexibly connected. The damping spring shock absorber is used to isolate the vibration of the motor and the frame, isolate the impact and wear on the evaporation chamber, and reduce noise. The flexible coupling is used to connect the motor output shaft and the rotating shaft on the same axis. The elastic element absorbs vibration and compensates for the axis deviation, ensuring that the motor transmits a stable load to the rotating shaft and improving the smoothness of the rotation of the scraper. Safety shock-absorbing measures are added to reduce the mechanical loss caused by vibration or impact and ensure the stable operation of the distillation device.

[0017] 2. The shaft seal is used to prevent high-pressure liquid or steam from leaking from the through hole, and at the same time prevent outside air from infiltrating, thereby improving the distillation effect.

[0018] 3. The heating mechanism uses electrical energy to achieve the heating effect, outputs stable heat to the feed tank, and heats, insulates and heats the flowing compound medium; the cooling mechanism is used to promote the condensation of the compound, absorb and take away the heat of the steam; the vacuum mechanism is used to establish and maintain the vacuum environment of the evaporation chamber, remove impurities in the evaporation chamber, avoid oxidation or contamination of the compound, and ensure the final distillation quality.

[0019] 4. The frame is used to provide effective support to other components and increase structural stability; the feed tank is used to buffer the flow of compound liquid and ensure the stability of the flow rate; the evaporation chamber provides a distillation reaction space for the compound to ensure that the compound vapor heated by the heating mechanism reacts with the condensed gas transmitted by the cooling mechanism; the light distillation collection bottle and the heavy distillation collection bottle are used to collect compound condensates of different components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a main schematic diagram of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the damping spring shock absorber in the utility model;

[0023] Figure 3 It is a structural schematic diagram of the flexible coupling in the utility model;

[0024] Figure 4 It is a front view schematic diagram of a partial structure of the utility model.

[0025] The reference numerals in the accompanying drawings are:

[0026] 1. Frame; 2. Feed tank; 3. Evaporation chamber; 4. Motor; 41. Damping spring shock absorber; 42. Flexible coupling; 43. Scraper; 5. Light distillation collecting bottle; 6. Heavy distillation collecting bottle; 7. Heating mechanism; 8. Cooling mechanism; 9. Vacuuming mechanism; 91. Vacuum pump; 92. Diffusion pump. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-Figure 4 The utility model is further described in detail:

[0028] like Figure 1-Figure 3 As shown, the present embodiment discloses a distillation device for chemical industry, comprising a frame 1, a motor 4, and a feed tank 2, an evaporation chamber 3, a light distillation collecting bottle 5, a heavy distillation collecting bottle 6, a heating mechanism 7, a cooling mechanism 8 and a vacuum mechanism 9 fixedly mounted on the frame 1 by fasteners. The discharge port of the feed tank 2 is connected to the feed port of the evaporation chamber 3 through a pipeline. A through hole is provided above the evaporation chamber 3, and a film scraper 43 is rotatably connected to the through hole. The shell of the motor 4 is flexibly connected to the frame 1, and the output shaft of the motor 4 is flexibly connected to the film scraper 43. The evaporation chamber 3 is provided with multiple groups of discharge ports, and the light distillation collecting bottle 5 and the heavy distillation collecting bottle 6 are connected to the evaporation chamber 3. The collecting bottle 6 is connected with the discharge port of the evaporation chamber 3 through a pipeline, the heating mechanism 7 is connected with the feed tank 2 through a pipeline, and the cooling mechanism 8 and the vacuum mechanism 9 are connected with the inner cavity of the evaporation chamber 3 through a pipeline; the motor 4 is flexibly connected to the frame 1 through a damping spring shock absorber 41; the scraper 43 includes a rotating shaft and a scraper, the rotating shaft is flexibly connected to the output shaft of the motor 4 through a flexible coupling 42, the scraper is arranged in the inner cavity of the evaporation chamber 3, and is fixedly connected to the outer wall of the rotating shaft through fasteners; at the through hole of the evaporation chamber 3, the rotating shaft is rotatably connected to the frame 1 through a ceramic bearing, and end cover seals are fixed on both sides of the bearing through fastener sets.

[0029] like Figure 4 As shown, the heating mechanism 7 is an electric heater, and the output port of the electric heater is connected to the air inlet of the feed tank 2 through a pipeline; the cooling mechanism 8 is a serpentine condenser, and the outer tube openings on both sides of the condenser are respectively connected to the vacuum mechanism 9 and the evaporation chamber 3 through pipelines; the vacuum mechanism 9 includes a vacuum pump 91 and a diffusion pump 92, and the vacuum pump 91 is connected in series with the diffusion pump 92 and the condenser through a pipeline.

[0030] The working principle of a distillation device for chemical industry of the utility model is:

[0031] 1. The device comprises a frame 1, a motor 4, and a feed tank 2, an evaporation chamber 3, a light distillation collecting bottle 5, a heavy distillation collecting bottle 6, a heating mechanism 7, a cooling mechanism 8 and a vacuum mechanism 9 fixedly mounted on the frame 1 by fasteners. The discharge port of the feed tank 2 is connected to the feed port of the evaporation chamber 3 through a pipeline. A through hole is provided above the evaporation chamber 3, and a film scraper 43 is rotatably connected to the through hole. The housing of the motor 4 is flexibly connected to the frame 1, and the output shaft of the motor 4 is flexibly connected to the film scraper 43. The evaporation chamber 3 is provided with multiple groups of discharge ports. The light distillation collecting bottle 5 and the heavy distillation collecting bottle 6 are connected to the evaporation chamber 3 through pipelines. The heating mechanism 7 is connected to the discharge port of the evaporation chamber 3 through a pipeline, and the cooling mechanism 8 and the vacuum mechanism 9 are connected to the inner cavity of the evaporation chamber 3 through a pipeline; the vacuum mechanism 9 evacuates the evaporation chamber 3 to a vacuum environment in advance, and then turns on the heating mechanism 7 to heat the compound in the feed tank 2 until it is heated to above the boiling point. After the compound evaporates, it enters the evaporation chamber 3 and is re-liquefied with the help of the condensation effect of the cooling mechanism 8 to achieve separation of liquids of different components, thereby realizing efficient distillation; the housing and output shaft of the motor 4 are both flexibly connected to achieve vibration reduction and buffering of the motor 4.

[0032] 2. The motor 4 is flexibly connected to the frame 1 through the damping spring shock absorber 41. The outer shell of the motor 4 adopts a flexibly connected. The spring steel inside the damping spring shock absorber 41 absorbs the impact force through its own compression, isolates the impact vibration of the motor 4 and the frame 1, and realizes vibration reduction protection for the evaporation chamber 3.

[0033] 3. The film scraper 43 includes a rotating shaft and a scraper. The rotating shaft is flexibly connected to the output shaft of the motor 4 through a flexible coupling 42. The scraper is arranged in the inner cavity of the evaporation chamber 3 and is fixedly connected to the outer wall of the rotating shaft through fasteners. The flexible coupling 42 is a flexible pin coupling, including T-shaped bearing seats, pins and springs on both sides. The output shaft of the motor 4 and the rotating shaft of the film scraper 43 are respectively fixed in the inner ring of the bearing seat by high-strength fastening bolts. The spring has the ability of buffering, shock absorption and shaft offset compensation, thereby realizing vibration reduction protection for the evaporation chamber 3 and the film scraper 43.

[0034] 4. At the through hole of the evaporation chamber 3, the rotating shaft is rotated to connect the frame 1 through the ceramic bearing, and the end cover shaft seals are fixed on both sides of the bearing through the fastener set; the bearing provides support radial load for the rotating shaft, reduces the shaft transmission friction, and ensures the smooth rotation of the rotating shaft; the shaft seal fills the gap of the bearing transmission at the through hole, prevents external air from entering the low-pressure area of ​​the evaporation chamber 3, and realizes the closed protection of the evaporation chamber 3.

[0035] 5. The heating mechanism 7 is an electric heater, and the output port of the electric heater is connected to the air inlet of the feed tank 2 through a pipeline; the heating medium in the electric heater passes through the heating chamber under pressure, and adopts the principle of fluid thermodynamics to evenly take away the huge heat generated by the electric heating element during operation, thereby realizing the heating of the compound in the feed tank 2.

[0036] 6. The cooling mechanism 8 is a serpentine condenser, and the outer tube openings on both sides of the condenser are connected to the vacuum mechanism 9 and the evaporation chamber 3 through pipelines; the condenser plays a condensation role in the distillation device, provides condensation for the evaporation chamber 3, absorbs steam heat, and realizes condensation and liquefaction of compound vapor.

[0037] 7. The vacuum pumping mechanism 9 includes a vacuum pump 91 and a diffusion pump 92. The vacuum pump 91 is connected in series with the diffusion pump 92 and the condenser through a pipeline. The vacuum pump 91 is first turned on, and the diffusion pump 92 is preheated after the pressure drops to the working pressure, and then the diffusion pump 92 is started to realize the vacuum operation in the evaporation chamber 3.

[0038] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A distillation apparatus for chemical industry, characterized in that: It includes a frame, and a feed tank, an evaporation chamber, a motor, a light distillation collecting bottle, a heavy distillation collecting bottle, a heating mechanism, a cooling mechanism and a vacuum mechanism installed on the frame. The discharge port of the feed tank is connected to the feed port of the evaporation chamber. The evaporation chamber is provided with a through hole, and a scraper is rotatably connected to the through hole. The housing of the motor is flexibly connected to the frame, and the output shaft of the motor is flexibly connected to the rotating shaft of the scraper. The evaporation chamber is provided with multiple groups of discharge ports, the light distillation collecting bottle and the heavy distillation collecting bottle are respectively connected to the discharge ports, the heating mechanism is connected to the feed tank, and the cooling mechanism and the vacuum mechanism are connected to the inner cavity of the evaporation chamber.

2. A distillation apparatus for chemical industry according to claim 1, characterized in that: The motor is flexibly connected to the frame through a damping spring shock absorber.

3. A distillation apparatus for chemical industry according to claim 2, characterized in that: The film scraper comprises a rotating shaft and a scraper. The rotating shaft is connected to the output shaft of the motor through a flexible coupling, and the scraper is fixedly connected to the rotating shaft.

4. A distillation apparatus for chemical industry according to claim 3, characterized in that: The rotating shaft is rotatably connected to the frame body via a bearing, and shaft seals are installed on both sides of the bearing.

5. A distillation device for chemical industry according to claim 4, characterized in that: The heating mechanism is an electric heater, and the heating end of the electric heater is connected to the feed tank.

6. A distillation apparatus for chemical industry according to claim 5, characterized in that: The cooling mechanism is a condenser, one end of an outer tube opening of the condenser is connected to the vacuum pumping mechanism, and the other end is connected to the evaporation chamber.

7. A distillation apparatus for chemical industry according to claim 6, characterized in that: The vacuum pumping mechanism comprises a vacuum pump and a diffusion pump, and the vacuum pump is connected to the diffusion pump and the condenser in sequence through a pipeline.

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