Continuous extractive distillation device

Abstract

The utility model relates to the technical field of extractive distillation, in particular to a continuous extractive distillation device which comprises a base and a first support, the upper surface of the base is fixedly connected with the first support, a supporting mechanism is arranged above the base, an adding mechanism is arranged on the outer wall of the first support, the upper surface of the base is fixedly connected with a cushion block, and the cushion block is arranged on the upper surface of the base. A collection bottle is arranged above the cushion block, and a distillation bottle is arranged above the first bracket. Through cooperation of the electric push rod, the supporting plate, the sliding rod, the sleeve and the bracket, the alcohol lamp is placed above the bracket, the alcohol lamp is ignited, the electric push rod is started, the electric push rod drives the supporting plate to move, the supporting plate drives the sliding rod to move, the sliding rod slides in the sleeve, the sliding rod and the sleeve play a role in guiding movement of the supporting plate, and the supporting plate drives the bracket to move. The alcohol lamp is further driven to move, so that the alcohol lamp is located at the required height, the alcohol lamp does not need to be held by hand during extractive distillation, and the working intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of extraction and distillation, in particular to a continuous extraction and distillation device. Background Art

[0002] Mercaptopropionic acid, also known as 3-mercaptopropionic acid, is prepared by mixing thiourea, water, and hydrochloric acid, first adding acrylic acid dropwise, then adding 30% liquid alkali dropwise to cause a hydrolysis reaction, keeping the temperature for 7 hours, and neutralizing the cooled solution with hydrochloric acid to acidity to obtain 3-mercaptopropionic acid acidified liquid.

[0003] For example, patent number CN207108951U discloses a continuous distillation extraction device, which includes an aqueous phase distillation container, an organic phase distillation container, a first distillation tube, a second distillation tube, a mixed extraction condensation chamber, and a U-shaped layered reflux tube. One end of the U-shaped layered reflux tube passes through a second metering bottle and a second siphon tube in sequence and then connects to the second distillation tube. The above document still has shortcomings. When used, it retains the advantages of the simultaneous distillation extraction method, such as low organic solvent usage and high extraction rate, and good reduction of volatile and semi-volatile components and high extraction rate, of the water distillation method. At the same time, it improves the problem of low extraction rate of water-soluble components in the simultaneous distillation extraction method, and overcomes the shortcomings of the water distillation method, such as intermittent extraction and large amount of extractant. However, the device in the above document requires a handheld alcohol lamp when performing extractive distillation, which increases the workload. At the same time, it is inconvenient to control the amount of 3-mercaptopropionic acid added when performing extractive distillation of 3-mercaptopropionic acid. Utility Model Content

[0004] The utility model aims to solve the problem of needing to hold a handheld alcohol lamp when performing extraction and distillation, and proposes a continuous extraction and distillation device.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A continuous extraction and distillation device is designed, comprising a base and a first bracket, wherein the upper surface of the base is fixedly connected to the first bracket, a lifting mechanism is provided above the base, an adding mechanism is provided on the outer wall of the first bracket, a pad is fixedly connected to the upper surface of the base, a collecting bottle is placed above the pad, and a distillation flask is placed above the first bracket.

[0007] Preferably, the lifting mechanism includes an electric push rod, which is fixed to the upper surface of the base, the output end of the electric push rod is fixed to a support plate, the lower surface of the support plate is fixed to a sliding rod, the outer wall of the sliding rod is slidably connected to a sleeve, the lower end of the sleeve is fixedly connected to the base, and the upper surface of the support plate is fixed to a bracket.

[0008] Preferably, the adding mechanism includes a second bracket, the outer wall of the second bracket is fixedly connected to the first bracket, the second bracket is slidably connected to the outer wall of the support rod, the lower end of the support rod is fixedly connected to a support plate, the outer wall of the support rod is sleeved with a spring, the two ends of the spring are respectively fixedly connected to the support plate and the second bracket, a first pipe is provided inside the sliding rod, a measuring cylinder is fixedly connected to the upper end of the sliding rod, and the second bracket is fixedly connected to the outer wall of one end of the second pipe.

[0009] Preferably, the outer wall of the other end of the second pipe is in contact with the rubber stopper, and the rubber stopper is in contact with the outer wall of the upper end of the distillation flask.

[0010] Preferably, the rubber stopper fits against the outer wall of one end of the third pipe, the outer wall of the end of the third pipe is fixedly connected to the shell, and the shell is fixed to the outer wall of the first bracket.

[0011] Preferably, a cylinder is fixedly connected to the interior of the shell, a spiral tube is wound around the outer wall of the cylinder, one end of the spiral tube is fixedly connected to the third pipe, and the outer wall of the other end of the spiral tube is fixedly connected to the shell.

[0012] The utility model proposes a continuous extraction and distillation device, which has the beneficial effects of: through the cooperation between the electric push rod, the support plate, the slide rod, the sleeve and the support, the alcohol lamp is placed above the support plate, and the alcohol lamp is ignited, the electric push rod is started, the electric push rod drives the support plate to move, the support plate drives the slide rod to move, the slide rod slides inside the sleeve, the slide rod and the sleeve guide the movement of the support plate, the support plate drives the support plate to move, and then drives the alcohol lamp to move, so that the alcohol lamp is at a required height, and there is no need to hold the alcohol lamp when performing extraction and distillation, which reduces the work intensity.

[0013] Through the cooperation between the second bracket, the support rod, the support plate, the spring, the first pipe, the measuring cylinder and the second pipe, the -mercaptopropionic acid to be extracted and distilled is added to the inside of the measuring cylinder. The measuring cylinder itself is provided with a scale, which can be used to know the amount of -mercaptopropionic acid added. The support plate is pushed upward, and the support rod with the support plate slides upward and compresses the spring. The support rod drives the first pipe and the measuring cylinder to move upward. When the first pipe is connected to the second pipe, the -mercaptopropionic acid inside the measuring cylinder enters the interior of the distillation flask through the first pipe and the second pipe. The amount of -mercaptopropionic acid added can be known through the measuring cylinder, which is convenient for controlling the amount of -mercaptopropionic acid added when extracting and distilling the -mercaptopropionic acid. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a structural sectional view of the utility model;

[0016] Figure 3 This is a structural diagram of the connection between the support plate, the slide rod and the sleeve in the utility model;

[0017] Figure 4 This is a schematic structural diagram of the connection between the third pipe, the shell and the cylinder in the present invention;

[0018] Figure 5 This is a schematic structural diagram of the connection between the second bracket, the support rod and the support plate in the present invention;

[0019] Figure 6 It is a structural schematic diagram of the cushion block in the present utility model.

[0020] In the figure: 1. base, 2. first bracket, 3. lifting mechanism, 301. electric push rod, 302. support plate, 303. slide rod, 304. sleeve, 305. bracket, 4. adding mechanism, 401. second bracket, 402. support rod, 403. support plate, 404. spring, 405. first pipe, 406. measuring cylinder, 407. second pipe, 5. collecting bottle, 6. distillation flask, 7. third pipe, 8. shell, 9. cylinder, 10. spiral tube, 11. spacer, 12. rubber stopper. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Refer to the attached Figure 1-6 : In this embodiment, a continuous extraction distillation device includes a base 1 and a first bracket 2. The first bracket 2 is fixedly connected to the upper surface of the base 1. A lifting mechanism 3 is provided above the base 1. The lifting mechanism 3 lifts the alcohol lamp. The outer wall of the first bracket 2 is provided with an adding mechanism 4. The adding mechanism 4 controls the amount of 3-mercaptopropionic acid added. A pad 11 is fixedly connected to the upper surface of the base 1. A collecting bottle 5 is placed above the pad 11. The pad 11 limits the position of the collecting bottle 5. A distillation flask 6 is placed above the first bracket 2. The distillation flask 6 distills 3-mercaptopropionic acid.

[0023] The lifting mechanism 3 includes an electric push rod 301, a support plate 302, a slide rod 303, a sleeve 304 and a bracket 305. The electric push rod 301 is fixedly connected to the upper surface of the base 1. The output end of the electric push rod 301 is fixedly connected to the support plate 302. The electric push rod 301 drives the support plate 302 to move. The lower surface of the support plate 302 is fixedly connected to the slide rod 303. The support plate 302 drives the slide rod 303 to move. The outer wall of the slide rod 303 is slidingly connected to the sleeve 304. The slide rod 303 slides inside the sleeve 304. The sleeve 304 and the slide rod 303 guide the movement of the support plate 302. The lower end of the sleeve 304 is fixedly connected to the base 1. The upper surface of the support plate 302 is fixedly connected to the bracket 305. The support plate 302 drives the bracket 305 to move.

[0024] The adding mechanism 4 includes a second bracket 401, a support rod 402, a support plate 403, a spring 404, a first pipe 405, a measuring cylinder 406 and a second pipe 407. The outer wall of the second bracket 401 is fixedly connected to the first bracket 2, and the first bracket 2 supports and positions the second bracket 401. The second bracket 401 is slidably connected to the outer wall of the support rod 402, and the support rod 402 slides inside the second bracket 401. The lower end of the support rod 402 is fixedly connected to the support plate 403, and the support plate 403 drives the support rod 402 to slide. The outer wall of the support rod 402 is sleeved with a spring 404. The model of the spring 404 is selected according to actual use requirements to meet work needs;

[0025] The two ends of the spring 404 are respectively fixedly connected to the support plate 403 and the second bracket 401. The spring 404 can drive the support plate 404 to move under the action of elasticity. A first pipe 405 is provided inside the support rod 402. The support rod 402 drives the first pipe 405 to slide. A measuring cylinder 406 is fixedly connected to the upper end of the support rod 402. The first pipe 405 is connected to the measuring cylinder 406. The second bracket 401 is fixedly connected to the outer wall of one end of the second pipe 407. The interior of the second bracket 401 is connected to the second pipe 407. The support rod 402 and the second bracket 401 are sealed. The outer wall of the other end of the second pipe 407 is in contact with the rubber stopper 12. The second pipe 407 and the third pipe 7 are both hoses.

[0026] The rubber stopper 12 fits the outer wall of the upper end of the distillation flask 6, and the rubber stopper 12 seals the top of the distillation flask 6. The rubber stopper 12 fits the outer wall of one end of the third pipe 7. The third pipe 7 and the rubber stopper 12 can be separated. The outer wall of the end of the third pipe 7 is fixedly connected to the shell 8, and the shell 8 is fixedly connected to the outer wall of the first bracket 2. A cylinder 9 is fixedly connected to the inside of the shell 8. A water injection pipe is provided below the cylinder 9, and an exhaust pipe is provided above it, so that cooling water can be passed into the interior of the cylinder 9. A spiral pipe 10 is wrapped around the outer wall of the cylinder 9, and the cylinder 9 cools the spiral pipe 10. One end of the spiral pipe 10 is fixedly connected to the third pipe 7, and the outer wall of the other end of the spiral pipe 10 is fixedly connected to the shell 8;

[0027] 3-Mercaptopropionic acid to be extracted and distilled is added to the interior of the measuring cylinder 406. The measuring cylinder 406 itself is provided with a scale, which can be used to know the amount of 3-mercaptopropionic acid added. The support plate 403 is pushed upward, and the support rod 402 carried by the support plate 403 slides upward and compresses the spring 404. The support rod 402 drives the first pipe 405 and the measuring cylinder 406 to move upward. When the first pipe 405 is connected to the second pipe 407, the 3-mercaptopropionic acid inside the measuring cylinder 406 enters the interior of the distillation flask 6 through the first pipe 405 and the second pipe 407. The amount of 3-mercaptopropionic acid added can be known through the measuring cylinder 304, which facilitates the control of the amount of 3-mercaptopropionic acid added when extracting and distilling the 3-mercaptopropionic acid.

[0028] Working principle:

[0029] When using a continuous extractive distillation apparatus to continuously extract and distill 3-mercaptopropionic acid;

[0030] 3-Mercaptopropionic acid addition stage:

[0031] 3-mercaptopropionic acid to be extracted and distilled is added to the interior of the graduated cylinder 406. The graduated cylinder 406 itself is provided with a scale, which can be used to know the amount of 3-mercaptopropionic acid added. The support plate 403 is pushed upward, and the support rod 402 carried by the support plate 403 slides upward and compresses the spring 404. The support rod 402 drives the first pipe 405 and the graduated cylinder 406 to move upward. When the first pipe 405 is connected to the second pipe 407, the 3-mercaptopropionic acid in the graduated cylinder 406 enters the interior of the distillation flask 6 through the first pipe 405 and the second pipe 407. The amount of 3-mercaptopropionic acid added can be known by the graduated cylinder 304, which facilitates the control of the amount of 3-mercaptopropionic acid added during the extractive distillation of the 3-mercaptopropionic acid.

[0032] Extraction and distillation stage:

[0033] The alcohol lamp is placed above the bracket 305 and the alcohol lamp is ignited, and the electric push rod 301 is started. The electric push rod 301 drives the support plate 302 to move, and the support plate 302 drives the sliding rod 303 to move. The sliding rod 303 slides inside the sleeve 304. The sliding rod 303 and the sleeve 304 guide the movement of the support plate 302. The support plate 302 drives the bracket 305 to move, and then drives the alcohol lamp to move, so that the alcohol lamp is at a required height. There is no need to hold the alcohol lamp when performing extraction distillation, which reduces the work intensity. 3-mercaptopropionic acid is distilled inside the distillation flask 6, and the gas during distillation enters the interior of the spiral tube 10 through the third pipe 7. Cooling water is added to the interior of the cylinder 9 to liquefy the gas inside the spiral tube 10. The liquefied liquid falls into the interior of the collecting bottle 5, thereby realizing the extraction of 3-mercaptopropionic acid. 3-mercaptopropionic acid can be continuously added through the adding mechanism 4 to realize continuous extraction distillation.

[0034] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A continuous extraction distillation apparatus, comprising a base (1) and a first bracket (2), wherein the first bracket (2) is fixedly connected to the upper surface of the base (1), characterized in that: A lifting mechanism (3) is provided above the base (1), an adding mechanism (4) is provided on the outer wall of the first bracket (2), a cushion block (11) is fixedly connected to the upper surface of the base (1), a collecting bottle (5) is placed above the cushion block (11), and a distillation flask (6) is placed above the first bracket (2).

2. A continuous extractive distillation apparatus according to claim 1, characterized in that: The lifting mechanism (3) comprises an electric push rod (301), the electric push rod (301) is fixedly connected to the upper surface of the base (1), the output end of the electric push rod (301) is fixedly connected to a support plate (302), the lower surface of the support plate (302) is fixedly connected to a sliding rod (303), the outer wall of the sliding rod (303) is slidably connected to a sleeve (304), the lower end of the sleeve (304) is fixedly connected to the base (1), and the upper surface of the support plate (302) is fixedly connected to a bracket (305).

3. A continuous extractive distillation apparatus according to claim 1, characterized in that: The adding mechanism (4) comprises a second bracket (401), the outer wall of the second bracket (401) is fixedly connected to the first bracket (2), the second bracket (401) is slidably connected to the outer wall of the support rod (402), the lower end of the support rod (402) is fixedly connected to a support plate (403), the outer wall of the support rod (402) is sleeved with a spring (404), the two ends of the spring (404) are respectively fixedly connected to the support plate (403) and the second bracket (401), a first pipe (405) is provided inside the support rod (402), a measuring cylinder (406) is fixedly connected to the upper end of the support rod (402), and the second bracket (401) is fixedly connected to the outer wall of one end of the second pipe (407).

4. A continuous extractive distillation apparatus according to claim 3, characterized in that: The outer wall of the other end of the second pipe (407) is in contact with the rubber stopper (12), and the rubber stopper (12) is in contact with the outer wall of the upper end of the distillation flask (6).

5. A continuous extractive distillation apparatus according to claim 4, characterized in that: The rubber stopper (12) fits against the outer wall of one end of the third pipe (7), the outer wall of the end of the third pipe (7) is fixedly connected to the shell (8), and the shell (8) is fixed to the outer wall of the first bracket (2).

6. A continuous extractive distillation apparatus according to claim 5, characterized in that: A cylinder (9) is fixedly connected to the interior of the shell (8), and a spiral tube (10) is wound around the outer wall of the cylinder (9). One end of the spiral tube (10) is fixedly connected to the third pipe (7), and the outer wall of the other end of the spiral tube (10) is fixedly connected to the shell (8).

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