Circulating extraction tank

Abstract

The utility model discloses a circulating extraction tank, which belongs to the technical field of chemical equipment and comprises a tank body. A stirring assembly is further included, the stirring assembly comprises a stirring rod, the stirring rod is arranged in the tank body, the stirring rod is fixedly connected with the bottom of a rotating shaft, and the top of the rotating shaft is rotationally matched with the tank body; the device further comprises a filling assembly. The filling assembly comprises an extraction cylinder. The extraction barrel, the air cylinder and other structures are matched for use, the structure is simple, convenience and practicability are achieved, an extraction agent in the solution box can be quantitatively extracted, an operator can conveniently control the amount of the extraction agent added into the tank body, the extraction effect is guaranteed, meanwhile, the use amount of the extraction agent can be reduced, and therefore the cost is reduced, and the practicability is high. And the liquid extraction assembly is matched for use, so that an extracted solution can be extracted, an extracting agent is conveniently added again for cyclic multi-time extraction, and the extraction effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a circulating extraction tank. Background Art

[0002] 2-Chloro-3-cyanopyridine is a chemical substance, which is a white or off-white powder crystal. The hazard level of 2-chloro-3-cyanopyridine is R36 / 37 / 38, which belongs to Xi-level hazardous chemicals. When using or contacting this substance, it is necessary to follow the relevant safety operating procedures and wear appropriate protective equipment, such as gloves and goggles. 2-Chloro-3-cyanopyridine has a wide range of uses and can be used to synthesize a variety of drugs, such as the antidepressant mirtazapine and the anti-AIDS drug nevirapine. It also has anti-inflammatory and analgesic effects and treatment of wasting syndrome. In addition, it can also be used to synthesize agricultural chemicals, such as pesticides and herbicides. The mother liquor obtained in the production process of 2-chloro-3-cyanopyridine needs to be extracted with ether after being alkalized with KOH solution. During the extraction, multiple cycles of extraction are required to fully complete the extraction.

[0003] After searching, in the prior art, Chinese patent publication number: CN211885501U discloses a 2-chloro-3-cyanopyridine circulation extraction device, which includes a base, the upper part of the base is fixedly connected to an extraction tank, one side of the bottom of the extraction tank is connected to a piston cylinder, a piston block is installed in the piston cylinder in a sealing and sliding manner, the upper part of the base is fixedly connected to an extractant box through a support rod, one end of the electric push rod is fixedly connected to one side of the piston block through a push-pull rod, one side of the extractant box is connected to one side of the extraction tank through a connecting pipe, one side of the extraction tank is connected to a vertically arranged transparent liquid level tube, and an extraction port is arranged on the upper part of one side of the extraction tank. The utility model collects the extraction solvent after extraction by operating the overall liquid level height. When the extraction agent needs to be added, the electric push rod retracts to reduce the internal liquid level height of the extraction tank, and the extraction agent automatically flows into the extraction tank and reaches balance; and the circulation extraction can be realized, and the operation is extremely convenient.

[0004] But this device still has the following defects:

[0005] In the cyclic extraction process, in order to achieve better extraction effect and reduce the amount of extractant used, the operator needs to control the amount of extractant added. When using this device, it is difficult to control the amount of extractant added, and the device does not solve this problem. Utility Model Content

[0006] The purpose of the utility model is to provide a circulating extraction tank, which can quantitatively extract the extractant in the solution tank by arranging an extraction tube and a cylinder and other structures for use, so that the operator can control the amount of extractant added to the tank body, and reduce the use of the extractant while ensuring the extraction effect, thereby reducing the cost, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A circulating extraction tank comprises a tank body;

[0009] It also includes a stirring assembly, the stirring assembly includes a stirring rod, the stirring rod is arranged inside the tank body, the stirring rod is fixedly connected to the bottom of the rotating shaft, and the top of the rotating shaft is rotatably matched with the tank body;

[0010] It also includes a filling assembly, which includes an extraction cylinder, the top of which is connected to the bottom of the solution tank through a first connecting pipe, and one side of which is connected to the tank body through a second connecting pipe. A piston block is slidably installed inside the extraction cylinder, and a sealing rubber sleeve is sleeved on the surface of the piston block. The sealing rubber sleeve is sealingly and slidably matched with the inner wall of the extraction cylinder, one side of the piston block is fixedly connected to the telescopic end of the cylinder, and the telescopic end of the cylinder is slidably matched with the other side of the extraction cylinder;

[0011] Also included is a fluid extraction assembly.

[0012] Preferably, a filling port is fixedly installed on one side of the top surface of the tank body, a sealing cover is threadedly connected to the top of the filling port, a discharge pipe is integrally formed on one side of the bottom of the tank body, a valve is installed on the discharge pipe, an observation window is opened on one side of the tank body, and transparent glass is sealed and bonded to the inner wall of the observation window.

[0013] Preferably, the top of the rotating shaft is in driving cooperation with the output end of the first motor, and the first motor is fixedly installed at the center of the top surface of the tank body.

[0014] Preferably, the extraction cylinder is made of transparent glass, the surface of the extraction cylinder is provided with scale lines, and the first connecting tube and the second connecting tube are installed with electronic valves.

[0015] Preferably, the extraction tube and the cylinder are fixedly mounted on a mounting frame, the solution box is arranged above the extraction tube, and the solution box is fixedly connected to the mounting frame.

[0016] Preferably, the liquid extraction assembly includes a movable seat, which is mounted on a screw rod, and the screw rod is arranged on one side of the tank body close to the observation window, and the two ends of the screw rod are rotatably matched with the top and bottom of the tank body, and the top of the screw rod is transmission-matched with the output end of the second motor, and the second motor is fixedly mounted on the other side of the top surface of the tank body.

[0017] Preferably, one side of the movable seat is slidably matched with the limiting rod, and both ends of the limiting rod are fixedly connected to the top and the bottom of the tank body.

[0018] Preferably, one end of a hose is fixedly mounted on the other side of the movable seat, and the other end of the hose is fixedly connected to the extraction end of the water pump.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model is simple in structure, convenient and practical, and can quantitatively extract the extractant in the solution tank by arranging the extraction tube and the cylinder for use together. It is convenient for the operator to control the amount of the extractant added to the tank body, and can reduce the use of the extractant while ensuring the extraction effect, thereby reducing the cost. When used in conjunction with the liquid extraction component, the extracted solution can be extracted, and it is convenient to add the extractant again for repeated extraction, thereby greatly improving the extraction effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a schematic diagram of the cross-section structure of the tank;

[0023] Figure 3 Schematic diagram of the filling component structure

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the extraction tube.

[0025] In the figure: 1. tank body; 2. stirring rod; 3. rotating shaft; 4. extraction cylinder; 5. first connecting pipe; 6. solution tank; 7. second connecting pipe; 8. piston block; 9. sealing rubber sleeve; 10. cylinder; 11. filling port; 12. sealing cover; 13. discharge pipe; 14. valve; 15. observation window; 16. first motor; 17. scale line; 18. electronic valve; 19. mounting frame; 20. moving seat; 21. screw rod; 22. second motor; 23. limit rod; 24. hose; 25. water pump. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 4 , the utility model provides a technical solution:

[0028] A circulating extraction tank comprises a tank body 1, a filling port 11 is fixedly mounted on one side of the top surface of the tank body 1, a sealing cover 12 is threadedly connected to the top of the filling port 11, a discharge pipe 13 is integrally formed on one side of the bottom of the tank body 1, a valve 14 is mounted on the discharge pipe 13, an observation window 15 is provided on one side of the tank body 1, and transparent glass is sealed and bonded to the inner wall of the observation window 15. The observation window 15 is provided to facilitate observation of the state of the mixed liquid and facilitate movement of the movable seat 20 to a specified height.

[0029] It also includes a stirring assembly, which includes a stirring rod 2. The stirring rod 2 is arranged inside the tank body 1, and the stirring rod 2 is fixedly connected to the bottom of the rotating shaft 3. The top of the rotating shaft 3 is rotatably matched with the tank body 1, and the top of the rotating shaft 3 is transmission matched with the output end of the first motor 16. The first motor 16 is fixedly installed at the center of the top surface of the tank body 1. By setting the stirring assembly, the mixed liquid and the extractant can be stirred to make them fully contact, thereby improving the extraction efficiency.

[0030] It also includes a filling component, which includes an extraction cylinder 4, the top of which is connected to the bottom of the solution tank 6 through a first connecting pipe 5, and one side of the extraction cylinder 4 is connected to the tank body 1 through a second connecting pipe 7. A piston block 8 is slidably installed inside the extraction cylinder 4, and a sealing rubber sleeve 9 is sleeved on the surface of the piston block 8. The sealing rubber sleeve 9 is sealingly and slidingly matched with the inner wall of the extraction cylinder 4, one side of the piston block 8 is fixedly connected to the telescopic end of the cylinder 10, and the telescopic end of the cylinder 10 is slidably matched with the other side of the extraction cylinder 4. The extraction cylinder 4 is made of transparent glass, and a scale line 17 is provided on the surface of the extraction cylinder 4. An electronic valve 18 is installed on the first connecting pipe 5 and the second connecting pipe 7. The extraction cylinder 4 and the cylinder 10 are fixedly installed on the mounting frame 19, and the solution tank 6 is arranged above the extraction cylinder 4, and the solution tank 6 is fixedly connected to the mounting frame 19.

[0031] By providing the extraction tube 4 and the cylinder 10, the extractant in the solution tank 6 can be quantitatively extracted, which is convenient for the operator to control the amount of extractant added to the tank body 1, and the use of the extractant can be reduced while ensuring the extraction effect, thereby reducing costs.

[0032] It also includes a liquid extraction component. By setting up the liquid extraction component, the extracted solution can be extracted, so that the extraction agent can be added into the tank body 1 again for multiple extraction cycles; the liquid extraction component includes a movable seat 20, and the movable seat 20 is installed on a screw rod 21. The screw rod 21 is arranged on the side of the tank body 1 close to the observation window 15, and the two ends of the screw rod 21 are rotatably matched with the top and bottom of the tank body 1, and the top of the screw rod 21 is transmission matched with the output end of the second motor 22. The second motor 22 is fixedly installed on the other side of the top surface of the tank body 1, one side of the movable seat 20 is slidably matched with the limit rod 23, and the two ends of the limit rod 23 are fixedly connected to the top and bottom of the tank body 1, and one end of a hose 24 is fixedly installed on the other side of the movable seat 20, and the other end of the hose 24 is fixedly connected to the extraction end of the water pump 25.

[0033] By setting the screw rod 21 and the second motor 22, the movable seat 20 and the bottom of the hose 24 can be driven to move up and down, which is convenient for extracting the upper liquid. When used in conjunction with the limit rod 23, the movable seat 20 can be prevented from rotating, thereby ensuring that the movable seat 20 can move up and down normally.

[0034] When in use, the device is moved to a designated position, the sealing cover 12 is opened, and the mixed liquid is added into the tank body 1 through the filling port 11, and the first connecting pipe electronic valve 18 is kept open and the second connecting pipe electronic valve 18 is closed;

[0035] The telescopic end of the cylinder 10 is controlled to contract, and the telescopic end of the cylinder 10 pulls the piston block 8 to move to the right, so that the pressure on the left side of the extraction cylinder 4 is reduced, so that the extraction liquid in the solution tank 6 is extracted into the extraction cylinder 4. By controlling the telescopic end of the cylinder 10 and observing the positions of the piston block 8 and the scale line 17 at the same time, the amount of the extracted extraction liquid is controlled;

[0036] When the extraction is completed, the first connecting pipe electronic valve 18 is controlled to close and the second connecting pipe electronic valve 18 is controlled to open, and the telescopic end of the cylinder 10 is controlled to push the piston block 8 to move to the left, so that the extraction liquid in the extraction tube 4 is pushed into the tank body 1, and the first motor 16 is started. The output end of the first motor 16 drives the rotating shaft 3 and the stirring rod 2 to rotate, and the rotating stirring rod 2 stirs the mixed solution and the extraction liquid to make them fully contact and then stand still. When the standing is completed;

[0037] Start the second motor 22, and the output end of the second motor 22 drives the screw 21 to rotate forward or reversely, so that the movable seat 20 moves up and down, thereby driving the bottom of the hose 24 to move up and down, and moving the bottom of the hose 24 to the upper liquid layer, and start the water pump 25 to extract the extracted upper solution. After the extraction is completed, the same operation can be continued to add the extraction agent to the mixed liquid for multiple extraction cycles.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating extraction tank, characterized in that: comprising a tank body (1); It also includes a stirring assembly, the stirring assembly including a stirring rod (2), the stirring rod (2) is arranged inside the tank body (1), the stirring rod (2) is fixedly connected to the bottom of the rotating shaft (3), and the top of the rotating shaft (3) is rotatably matched with the tank body (1); It also includes a filling assembly, which includes an extraction cylinder (4), the top of the extraction cylinder (4) is connected to the bottom of the solution tank (6) through a first connecting pipe (5), and one side of the extraction cylinder (4) is connected to the tank body (1) through a second connecting pipe (7). A piston block (8) is slidably installed inside the extraction cylinder (4), and a sealing rubber sleeve (9) is sleeved on the surface of the piston block (8). The sealing rubber sleeve (9) is in sealing and sliding cooperation with the inner wall of the extraction cylinder (4). One side of the piston block (8) is fixedly connected to the telescopic end of the cylinder (10), and the telescopic end of the cylinder (10) is in sliding cooperation with the other side of the extraction cylinder (4); Also included is a fluid extraction assembly.

2. A circulating extraction tank according to claim 1, characterized in that: A filling port (11) is fixedly mounted on one side of the top surface of the tank body (1), a sealing cover (12) is threadedly connected to the top of the filling port (11), a discharge pipe (13) is integrally formed on one side of the bottom of the tank body (1), a valve (14) is mounted on the discharge pipe (13), an observation window (15) is provided on one side of the tank body (1), and a transparent glass is sealed and bonded to the inner wall of the observation window (15).

3. A circulating extraction tank according to claim 1, characterized in that: The top of the rotating shaft (3) is in driving cooperation with the output end of the first motor (16), and the first motor (16) is fixedly mounted at the center of the top surface of the tank body (1).

4. A circulating extraction tank according to claim 1, characterized in that: The extraction tube (4) is made of transparent glass, and a scale line (17) is provided on the surface of the extraction tube (4). Electronic valves (18) are installed on the first connecting tube (5) and the second connecting tube (7).

5. A circulating extraction tank according to claim 1, characterized in that: The extraction tube (4) and the cylinder (10) are fixedly mounted on a mounting frame (19); the solution box (6) is arranged above the extraction tube (4); and the solution box (6) is fixedly connected to the mounting frame (19).

6. A circulating extraction tank according to claim 1, characterized in that: The liquid extraction assembly comprises a movable seat (20), the movable seat (20) being mounted on a screw rod (21), the screw rod (21) being arranged on a side of the tank body (1) near the observation window (15), and the two ends of the screw rod (21) being rotatably matched with the top and bottom of the tank body (1), the top of the screw rod (21) being transmission matched with the output end of a second motor (22), and the second motor (22) being fixedly mounted on the other side of the top surface of the tank body (1).

7. A circulating extraction tank according to claim 6, characterized in that: One side of the movable seat (20) is slidably matched with the limiting rod (23), and the two ends of the limiting rod (23) are fixedly connected to the top and bottom of the tank body (1).

8. A circulating extraction tank according to claim 7, characterized in that: One end of a hose (24) is fixedly mounted on the other side of the movable seat (20), and the other end of the hose (24) is fixedly connected to the extraction end of a water pump (25).

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