Reduced pressure distillation device

Abstract

The utility model relates to the technical field of inhibitor preparation equipment, in particular to a reduced pressure distillation device which comprises a distillation retort and a separation box which are communicated through a connecting pipe. A partition plate is vertically arranged in the separation box and divides the interior of the separation box into a first liquid storage area located on the left side and a second liquid storage area located on the right side. The connecting pipe is communicated with the first liquid storage area; a motor is fixedly mounted on the separation box; an output shaft of the motor is fixedly connected with the bottom of the partition plate in the front-back horizontal direction; a gap is reserved between the top of the partition plate and the inner wall of the top of the separation box. The front end face and the rear end face of the partition plate are in sealed sliding contact with the corresponding inner wall of the separation box. An output shaft of the motor is in sealed rotating contact with the bottom inner wall of the separation box; a liquid level sensor is fixedly installed on the separation box, and a detection head of the liquid level sensor extends into the first liquid storage area. The rotating partition plate is arranged for separating liquid products, the structure is simple, control and operation are convenient, and the separation efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to inhibitor preparation equipment technical field, especially in a kind of reduced pressure distillation device. BACKGROUND

[0002] Reduced pressure distillation is mainly used for the separation of different boiling point products by reducing the boiling point of liquid at lower temperature through reducing system pressure, and is an important equipment for realizing the separation of high-boiling or heat-sensitive materials in the preparation process of inhibitors, and is usually used in solvent recovery and concentration, separation of intermediates, purification of products, removal of low-boiling impurities and recovery of catalyst or reagent preparation process.

[0003] The reduced pressure distillation device disclosed in the patent No. CN215136989U includes a base and a distiller, and the top of the distiller is fixedly connected with a reduced pressure mechanism, and the top of the base is fixedly connected with a filtering mechanism. The reduced pressure mechanism includes a docking frame, a fixed ring is fixedly connected to the top of the docking frame, a sliding rod is slidably connected to the inside of the fixed ring, a sliding block is fixedly connected to one end of the sliding rod, the outside of the sliding block is slidably connected to the inside of the docking frame, a spring is arranged on the outside of the sliding rod, a contraction belt is fixedly connected to one end of the sliding block, and a docking ring is fixedly connected to one end of the contraction belt; the filtering mechanism includes a collection box, a filter box one is fixedly connected to the inside of the collection box, a filter box two is fixedly connected to one side of the filter box one, a rolling rod is rollingly connected to the top of the filter box one and the filter box two through a roller, an absorbing cotton is arranged on one side of the rolling rod, a fixed plate is fixedly connected to the top of the absorbing cotton, a second telescopic rod is fixedly connected to the top of the fixed plate, a first telescopic rod is fixedly connected to the outside of the second telescopic rod, and one end of the first telescopic rod is fixedly connected to the inside of the collection box.

[0004] Based on the above technical features, the problem is that the existing reduced pressure distillation device uses two telescopic rods to cooperate during the separation of the product, which has a complex structure, is difficult to control, is inconvenient to use, and reduces the separation efficiency.

[0005] Therefore, it is necessary to solve the above problems by using a reduced pressure distillation device. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a reduced pressure distillation device to solve the problems in the background art.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a decompression distillation device, including distillation jar and separation tank, the distillation jar and separation tank are communicated through the connecting pipe, a baffle is vertically arranged in the separation tank, the baffle divides the separation tank into the first liquid storage area of left side and the second liquid storage area of right side, the connecting pipe is communicated with the first liquid storage area, the motor is fixedly installed on the separation tank, and the output shaft of the motor is fixedly connected with the bottom of the baffle along the front-back horizontal direction, the top of the baffle and the top inner wall of the separation tank have a gap, and the front end surface and the rear end surface of the baffle are in sealed sliding contact with the corresponding inner wall of the separation tank, the output shaft of the motor is in sealed rotary contact with the bottom inner wall of the separation tank, and the liquid level sensor is fixedly installed on the separation tank.

[0008] Preferably, the bottom inner wall of the separation tank is fixedly provided with a baffle along the front-back horizontal direction, the baffle is located in the second liquid storage area, the end of the baffle close to the first liquid storage area is provided with a quarter of a circular arc surface, the quarter of a circular arc surface is matched with and in sealed contact with the output shaft of the motor, and the front and rear end faces of the baffle are fixedly and sealingly connected with the corresponding inner wall of the separation tank.

[0009] Preferably, the bottom of the separation tank is provided with two liquid discharge ports, the two liquid discharge ports are provided with control valves, one of the liquid discharge ports is communicated with the first liquid storage area, and the other liquid discharge port is communicated with the second liquid storage area, a collecting box is arranged below the separation tank, and the collecting box is located below the liquid discharge port communicated with the first liquid storage area.

[0010] Preferably, a water tank is arranged between the distillation jar and the separation tank, a liquid pump is fixedly installed on the water tank, a cooling pipe is fixedly sleeved on the connecting pipe, a cooling cavity is arranged in the pipe body of the cooling pipe, the water outlet of the liquid pump is communicated with the cooling cavity through a water inlet pipe, and the cooling cavity is communicated with the water tank through a water outlet pipe.

[0011] Preferably, a decompression mechanism is installed on the top of the distillation jar, the decompression mechanism comprises a decompression cylinder communicated with the distillation jar, and a pressure relief plate is sealingly and slidingly installed in the decompression cylinder, a spring is arranged in the decompression cylinder along the sliding direction of the pressure relief plate, one end of the spring is fixedly connected with the pressure relief plate, and the other end of the spring is fixedly connected with the decompression cylinder.

[0012] Preferably, a feeding port is arranged on the distillation jar.

[0013] The utility model discloses a technical effect and advantage: the utility model discloses setting up rotary baffle, when needing to separate two mutually incompatible and density different liquid products, baffle rotates to first liquid storage area, the liquid level of the liquid product of small density rises at this moment, after the liquid level is higher than the top of baffle, the liquid product of small density flows into second liquid storage area through baffle, thereby realizes the separation of two different liquid products, simple structure, convenient control and operation, greatly promotes separation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model;

[0015] Fig. 2 It is the pressure reducing mechanism schematic diagram of the utility model;

[0016] Fig. 3 It is the separation tank half cut schematic diagram of the utility model;

[0017] Fig. 4 It is the separation tank inside schematic diagram of the utility model.

[0018] In the drawing: 1, retort;2, pressure reducing cylinder;3, baffle;4, charging port;5, connecting pipe;6, cooling pipe;7, liquid pump;8, water tank;9, separation tank;10, liquid level sensor;11, collection box;12, motor;13, spring;14, pressure relief plate;15, baffle;16, liquid discharge port;17, first liquid storage area;18, second liquid storage area. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and all other embodiments obtained by the person skilled in the art without creative labor based on the embodiments in the utility model belong to the protection scope of the utility model.

[0020] The utility model provides a kind of pressure reducing distillation device as Figs. 1 to 4 As shown in the drawing, it includes retort 1 and separation tank 9.The top of retort 1 is provided with charging port 4, for adding mixed liquid needing to be separated.In the embodiment, the mixed liquid is liquid produced in reaction process or after reaction of inhibitor preparation.The separated substance after pressure reducing distillation includes liquid organic compound insoluble in water and distilled water.

[0021] A decompression mechanism is installed on the top of the distillation tank 1, and the decompression mechanism comprises a decompression cylinder 2 which is in communication with the distillation tank 1. A decompression plate 14 is sealingly and slidably installed in the decompression cylinder 2. A spring 13 is arranged in the decompression cylinder 2 along the sliding direction of the decompression plate 14, one end of the spring 13 is fixedly connected with the decompression plate 14, and the other end of the spring 13 is fixedly connected with the decompression cylinder 2. The decompression mechanism is used for decompression of the gas in the distillation tank 1.

[0022] The distillation tank 1 is provided with existing stirring devices and heating devices, the stirring devices are used for accelerating the separation speed and making the mixed liquid uniformly heated, and the heating devices are used for heating the liquid in the distillation tank 1, which are all prior arts and will not be described here.

[0023] A connecting pipe 5 is arranged between the distillation tank 1 and the separation tank 9, and the connecting pipe 5 fixedly connects the distillation tank 1 and the separation tank 9. The connecting position of the connecting pipe 5 with the distillation tank 1 is higher than the connecting position of the connecting pipe 5 with the separation tank 9.

[0024] A water tank 8 is arranged between the distillation tank 1 and the separation tank 9, and a liquid pump 7 is fixedly installed on the water tank 8. A cooling pipe 6 is fixedly sleeved on the connecting pipe 5, and a cooling cavity is arranged in the pipe body of the cooling pipe 6. The water outlet of the liquid pump 7 is in communication with the cooling cavity through a water inlet pipe, and the cooling cavity is in communication with the water tank 8 through a water outlet pipe. The cooling pipe 6 is used for condensation of the liquid vapor in the connecting pipe 5.

[0025] A partition plate 15 is vertically arranged in the separation tank 9, and the partition plate 15 is arranged along the front-rear direction. The partition plate 15 divides the separation tank 9 into a first liquid storage area 17 located on the left side and a second liquid storage area 18 located on the right side. The connecting pipe 5 is in communication with the first liquid storage area 17.

[0026] A motor 12 is fixedly installed on the separation tank 9, the output shaft of the motor 12 is fixedly connected with the bottom of the partition plate 15 along the front-rear horizontal direction, the partition plate 15 is arranged along the radial direction of the output shaft of the motor 12 and is parallel to the output shaft of the motor 12.

[0027] The top of the partition plate 15 and the inner wall of the top of the separation tank 9 are left with a gap, which is used for shunting the liquid product located on the upper side in the first liquid storage area 17.

[0028] The front end surface and the rear end surface of the partition plate 15 are sealingly and slidably in contact with the corresponding inner walls of the separation tank 9, and the bottom of the output shaft of the motor 12 is sealingly and rotatably in contact with the inner wall of the bottom of the separation tank 9, so as to prevent the liquid products in the first liquid storage area 17 and the second liquid storage area 18 from being mixed again.

[0029] A liquid level sensor 10 is fixedly installed on the separation tank 9, and the detection head of the liquid level sensor 10 extends into the first liquid storage area 17 to detect the liquid surface of the liquid in the first liquid storage area 17, so as to ensure that the liquid surface does not exceed the topmost part of the partition plate 15 before separation.

[0030] A baffle 3 is fixed on the inner wall of the bottom of the separation tank 9 in the front-rear horizontal direction, and is located in the second liquid storage area 18. The baffle 3 is provided with a quarter-arc curved surface near the end of the first liquid storage area 17, which matches and is in sealing contact with the output shaft of the motor 12. The front and rear end faces of the baffle 3 are fixed and sealingly connected with the corresponding inner walls of the separation tank 9, so as to prevent the liquid products in the first liquid storage area 17 and the second liquid storage area 18 from mixing again from the bottom of the output shaft of the motor 12.

[0031] Two liquid discharge ports 16 are provided on the bottom of the separation tank 9, and control valves are arranged in the charging port 4 and the two liquid discharge ports 16. In this example, all the control valves are solenoid valves. One of the liquid discharge ports 16 communicates with the first liquid storage area 17, and the other liquid discharge port 16 communicates with the second liquid storage area 18. A collection box 11 is arranged below the separation tank 9, and the collection box 11 is located below the liquid discharge port 16 communicating with the first liquid storage area 17.

[0032] In this example, the controller for controlling the entire device is a PLC controller, which is a prior art and will not be described here.

[0033] Working principle: when in use, the mixed liquid to be distilled and separated is injected into the distillation tank 1 through the charging port 4. Then the control valve in the charging port 4 closes the charging port 4 and starts the stirring device to stir the mixed liquid in the distillation tank 1, while the heating device is started to heat the mixed liquid in the distillation tank 1.

[0034] During the distillation and separation process, the gas pressure in the distillation tank 1 rises. When the gas pressure in the distillation tank 1 exceeds the set pressure, the gas in the distillation tank 1 enters the pressure relief cylinder 2. At this time, the gas pushes the pressure relief plate 14 to slide away from the distillation tank 1, and the pressure relief plate 14 compresses the spring 13. The excess gas pressure is converted into the elastic force of the spring 13, so as to achieve the purpose of pressure relief.

[0035] After the set pressure, the mixed gas flows into the connecting pipe 5. In this process, the liquid pump 7 is started to pump out the cooling water in the water tank 8. At this time, the cooling water enters the cooling cavity in the cooling pipe 6 through the water inlet pipe, and the cooling pipe 6 cools the gas in the connecting pipe 5, and the gas in the connecting pipe 5 is condensed into liquid and flows into the first liquid storage area 17.

[0036] The condensed liquid product in the connecting pipe 5 is distilled water and liquid organic compounds. After flowing into the first liquid storage area 17, if the density of the liquid organic compounds is greater than that of the distilled water, the liquid organic compounds are located below the distilled water, and vice versa.

[0037] Afterwards, the probe of the liquid level sensor 10 detects the height of the liquid level in the first liquid storage area 17. When the liquid level reaches the set height, the heating device and the stirring device are turned off. Then the motor 12 is started, and the output shaft of the motor 12 drives the partition 15 to rotate and tilt into the first liquid storage area 17. In this process, the volume of the first liquid storage area 17 is reduced, and the partition 15 pushes the liquid level in the first liquid storage area 17 to rise. When the liquid level is higher than the top of the partition 15, the liquid above the partition 15 flows into the second liquid storage area 18, thereby realizing the separation of the liquid.

[0038] In this example, the separation tank 9 is made of transparent material, so as to observe whether the liquid organic compounds in the first liquid storage area 17 are completely separated. When the separation is complete, the output shaft of the motor 12 is reversed, and then the partition 15 rotates away from the first liquid storage area 17 until it is in the vertical state.

[0039] Finally, the control valves of the two liquid discharge ports 16 are opened to discharge the distilled water and the liquid organic compounds. The distilled water can be collected by the collection box 11.

[0040] Finally, it should be noted that the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some of the technical features, as long as they are within the spirit and principles of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A vacuum distillation apparatus comprising a distillation vessel (1) and a knockout drum (9) which communicate via a connecting pipe (5), characterised in that: A partition plate (15) is vertically arranged in the separation tank (9), the partition plate (15) divides the separation tank (9) into a first liquid storage area (17) on the left side and a second liquid storage area (18) on the right side; the connecting pipe (5) is in communication with the first liquid storage area (17); a motor (12) is fixedly installed on the separation tank (9), the output shaft of the motor (12) is fixedly connected with the bottom of the partition plate (15) in the front-rear horizontal direction; the top of the partition plate (15) and the top inner wall of the separation tank (9) are provided with a gap, the front end face and the rear end face of the partition plate (15) are in sealing sliding contact with the corresponding inner walls of the separation tank (9); the output shaft of the motor (12) is in sealing rotating contact with the bottom inner wall of the separation tank (9); a liquid level sensor (10) is fixedly installed on the separation tank (9), the detection head of the liquid level sensor (10) extends into the first liquid storage area (17).

2. The reduced pressure distillation apparatus of claim 1, wherein: A baffle (3) is fixedly arranged on the bottom inner wall of the separation tank (9) in the front-rear horizontal direction, the baffle (3) is located in the second liquid storage area (18); the end of the baffle (3) close to the first liquid storage area (17) is provided with a quarter circular arc surface, the quarter circular arc surface is matched with and in sealing contact with the output shaft of the motor (12); the front and rear end faces of the baffle (3) are fixedly and sealingly connected with the corresponding inner walls of the separation tank (9).

3. The reduced pressure distillation apparatus of claim 1, wherein: Two liquid discharge ports (16) are arranged on the bottom of the separation tank (9), control valves are arranged in the two liquid discharge ports (16); one of the liquid discharge ports (16) is in communication with the first liquid storage area (17), and the other liquid discharge port (16) is in communication with the second liquid storage area (18); a collection box (11) is arranged below the separation tank (9), the collection box (11) is located below the liquid discharge port (16) in communication with the first liquid storage area (17).

4. The reduced pressure distillation apparatus of claim 1, wherein: A water tank (8) is arranged between the distillation tank (1) and the separation tank (9), a liquid pump (7) is fixedly installed on the water tank (8); a cooling pipe (6) is fixedly sleeved on the connecting pipe (5), a cooling cavity is arranged in the pipe body of the cooling pipe (6); the water outlet of the liquid pump (7) is in communication with the cooling cavity through a water inlet pipe, and the cooling cavity is in communication with the water tank (8) through a water outlet pipe.

5. The reduced pressure distillation apparatus of claim 1, wherein: A pressure reduction mechanism is installed on the top of the distillation tank (1), the pressure reduction mechanism comprises a pressure reduction cylinder (2) in communication with the distillation tank (1), and a pressure relief plate (14) is sealingly and slidingly installed in the pressure reduction cylinder (2); a spring (13) is arranged in the pressure reduction cylinder (2) along the sliding direction of the pressure relief plate (14), one end of the spring (13) is fixedly connected with the pressure relief plate (14), and the other end of the spring (13) is fixedly connected with the pressure reduction cylinder (2).

6. The reduced pressure distillation apparatus of claim 1, wherein: A feeding port (4) is arranged on the distillation tank (1).

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