A rapid screening device for aqueous solvent containing dimethylformamide

Abstract

The utility model relates to the field of medical technology, and specifically to a rapid screening device for a dimethylformamide-containing aqueous solvent, comprising a stirring tank and a filter, wherein a slide groove is provided on the inner wall surface of the filter. The utility model provides a slide groove on the inner wall surface of the filter, so that the slide groove and the movable block cooperate to disassemble the first filter screen and the second filter screen from the filter, and the first filter screen and the second filter screen are provided to filter the mixed solution, filter the solid residue and suspended matter in the solution, and leave the solid residue and suspended matter on the first filter screen and the second filter screen, thereby obtaining the water-soluble substances in the solution, wherein the two groups of filter screens provided can separate and screen the dimethylformamide in the aqueous solvent more carefully, and the liquid outlet pipe and the valve are provided to discharge and collect the filtered water-soluble substances, which is convenient for the collection of the water-soluble substances.

Description

Technical Field

[0001] The utility model relates to the technical field of medicine, in particular to a rapid screening device containing a dimethylformamide water solvent. Background Art

[0002] Dimethylformamide is a transparent liquid that is miscible with water and most organic solvents. It is a common solvent for chemical reactions. Pure dimethylformamide has no odor, but industrial-grade or deteriorated dimethylformamide has a fishy smell because it contains dimethylamine impurities. The name comes from the fact that it is formamide, a dimethyl substituted amide of formic acid, and both methyl groups are located on the nitrogen atom. Dimethylformamide is a high-boiling polar hydrophilic aprotic solvent that can promote the SN2 reaction mechanism. Dimethylformamide is made from formic acid and dimethylamine. Dimethylformamide is strong It is unstable in the presence of alkali such as sodium hydroxide or strong acid such as hydrochloric acid or sulfuric acid, especially at high temperature, and is hydrolyzed into formic acid and dimethylamine. A solution is a uniform, stable mixture of at least two substances. The dispersed substance is dispersed in another substance solvent as molecules or smaller particles. Water can be used as a solvent to dissolve many substances. A solution using water as a solvent is called an aqueous solution, and is marked with "aq", such as "HCl". Therefore, when dimethylformamide is extracted from an aqueous solvent, a screening device is required. Screening is to separate and screen two different objects.

[0003] However, the existing screening device cannot screen and separate the solution, and can only screen and distinguish solid particles, etc., which makes it impossible to screen out the dimethylformamide in the water solvent, resulting in poor screening effect.

[0004] Therefore, it is necessary to invent a rapid screening device containing dimethylformamide water solvent to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a rapid screening device containing dimethylformamide water solvent to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rapid screening device for a dimethylformamide-containing aqueous solvent, comprising a stirring tank and a filter, the inner wall surface of the filter is provided with a slide groove, the outer wall of the slide groove is provided with a first filter screen, the outer wall of the first filter screen is fixedly installed with a movable block, the lower end of the first filter screen is fixedly installed with a connecting rod, the lower end of the connecting rod is fixedly installed with a second filter screen, the lower end of the filter is provided with a liquid outlet pipe, and the inner wall of the liquid outlet pipe is movably connected with a valve.

[0007] Preferably, an electric heater is fixedly installed inside the stirring tank body, and a controller is provided on the outer wall of the stirring tank body.

[0008] Preferably, a driving motor is provided at the upper end of the stirring tank body, a transmission rod is connected to the output end of the driving motor, and a stirring blade is fixedly mounted on the outer wall of the transmission rod.

[0009] Preferably, a discharge pipe is provided at the lower end of the stirring tank body, the other end of the discharge pipe is connected to a water pump, the other end of the water pump is movably connected to a delivery pipe, the other end of the delivery pipe is fixedly installed with a first docking piece, and a screw rod passes through one side of the first docking piece.

[0010] Preferably, a filter is provided on one side of the stirring tank body, a docking tube is provided on the upper end of the filter, a second docking piece is fixedly mounted on the upper end of the docking tube, and a sealing ring is movably connected to the upper end of the second docking piece.

[0011] Preferably, the sealing ring is movably connected to the second docking piece, and the sealing ring is made of rubber material.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] 1. Through the arrangement of the chute, the first filter screen, the movable block, the connecting rod, the second filter screen, the liquid outlet pipe and the valve, the chute is opened on the inner wall surface of the filter, so that the cooperation between the chute and the movable block can disassemble the first filter screen and the second filter screen from the filter, and the arrangement of the first filter screen and the second filter screen can filter the mixed solution, filter the solid residue and suspended matter in the solution, and leave the solid residue and suspended matter on the first filter screen and the second filter screen, so as to obtain the water-soluble substances in the solution, wherein the two sets of filter screens can separate and screen the dimethylformamide in the water solvent more carefully, and the arrangement of the liquid outlet pipe and the valve can discharge and collect the water-soluble substances after filtration, which is convenient for the collection of water-soluble substances;

[0014] 2. Through the setting of electric heater, controller, drive motor, transmission rod and stirring blade, the setting of electric heater can heat the solution inside the stirring tank. During the heating process, the extracted substance is dissolved in the solvent, which is convenient for the subsequent separation of solid residue or suspended matter in the solution by filtering method, and assists the filter to obtain water-soluble substances. Secondly, the setting of drive motor and stirring blade can mix the heated solvent with the extracted substance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

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

[0017] Figure 2 This is a schematic diagram of the structure inside the filter of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure inside the stirring tank of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the stirring blade of the utility model.

[0020] Description of reference numerals:

[0021] 1. Mixing tank; 2. Electric heater; 3. Controller; 4. Driving motor; 5. Transmission rod; 6. Mixing blade; 7. Discharge pipe; 8. Water pump; 9. Delivery pipe; 10. First docking piece; 11. Screw; 12. Filter; 13. Butt joint; 14. Second docking piece; 15. Sealing ring; 16. Slide; 17. First filter screen; 18. Movable block; 19. Connecting rod; 20. Second filter screen; 21. Liquid outlet pipe; 22. Valve. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The utility model provides Figure 1-3 The rapid screening device for a dimethylformamide-containing aqueous solvent shown in the figure comprises a stirring tank body 1 and a filter 12, a slide groove 16 is provided on the inner wall surface of the filter 12, a first filter screen 17 is provided on the outer wall of the slide groove 16, a movable block 18 is fixedly installed on the outer wall of the first filter screen 17, a connecting rod 19 is fixedly installed on the lower end of the first filter screen 17, a second filter screen 20 is fixedly installed on the lower end of the connecting rod 19, a liquid outlet pipe 21 is provided at the lower end of the filter 12, and a valve 22 is movably connected to the inner wall of the liquid outlet pipe 21.

[0024] like Figure 1 and Figure 3 As shown, an electric heater 2 is fixedly installed inside the stirring tank body 1 , and a controller 3 is provided on the outer wall of the stirring tank body 1 . The controller 3 is capable of regulating the temperature of the electric heater 2 .

[0025] like Figure 1 , Figure 3 and Figure 4 As shown, a driving motor 4 is arranged at the upper end of the stirring tank body 1, a transmission rod 5 is connected to the output end of the driving motor 4, a stirring blade 6 is fixedly installed on the outer wall of the transmission rod 5, and the driving motor 4 drives the stirring blade 6 to rotate through the transmission rod 5.

[0026] like Figure 1-3 As shown, a discharge pipe 7 is provided at the lower end of the stirring tank body 1, the other end of the discharge pipe 7 is connected to a water pump 8, the other end of the water pump 8 is movably connected to a delivery pipe 9, the other end of the delivery pipe 9 is fixedly installed with a first docking piece 10, one side of the first docking piece 10 is penetrated by a screw 11, and the delivery pipe 9 is mainly set to draw the processed solvent inside the stirring tank body 1 into the filter 12 for screening treatment.

[0027] like Figure 1-3 As shown, a filter 12 is provided on one side of the stirring tank body 1, and a docking tube 13 is provided on the upper end of the filter 12. A second docking piece 14 is fixedly installed on the upper end of the docking tube 13. A sealing ring 15 is movably connected to the upper end of the second docking piece 14. The sealing ring 15 and the second docking piece 14 are movably connected. The sealing ring 15 is made of "rubber material". The setting of the sealing ring 15 can seal the gap at the docking point between the docking tube 13 and the conveying pipe 9. The cooperation of the second docking piece 14 and the first docking piece 10 can quickly install and fix the docking tube 13 and the conveying pipe 9.

[0028] The practical working principle of the present invention is as follows: first, the stirring tank body 1 and the filter 12 are moved to the designated positions, the power switch of the stirring tank body 1 is turned on, and then the aqueous solvent containing dimethylformamide is poured into the stirring tank body 1, thereby turning on the switch of the electric heater 2, and adjusting and controlling the temperature of the electric heater 2 through the controller 3 arranged outside the stirring tank body 1, so as to heat the aqueous solvent containing dimethylformamide inside the stirring tank body 1, and then turning on the switch of the driving motor 4, so that the driving motor 4 drives the stirring blade 6 to rotate through the transmission rod 5, and the dimethylformamide and the aqueous solvent are mixed during the rotation of the stirring blade 6, so that after the dimethylformamide and the aqueous solvent solution are stirred well, the power switch of the driving motor 4 is turned off, and then the switch of the water pump 8 is turned on, so that the water pump 8 draws the solvent inside the stirring tank body 1 into the filter 12, and the solid residue or suspended matter in the solution is filtered and processed through the first filter screen 17 and the second filter screen 20 arranged inside the filter 12, so as to obtain the water-soluble substances in the solution, and finally, when the device is not used, the power switch of the device can be turned off.

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rapid screening device for a dimethylformamide-containing aqueous solvent, comprising a stirring tank (1) and a filter (12), characterized in that: The filter (12) is provided with a slide groove (16) on its inner wall surface, a first filter screen (17) is provided on its outer wall, a movable block (18) is fixedly mounted on the outer wall of the first filter screen (17), a connecting rod (19) is fixedly mounted on the lower end of the first filter screen (17), a second filter screen (20) is fixedly mounted on the lower end of the connecting rod (19), a liquid outlet pipe (21) is provided at the lower end of the filter (12), and a valve (22) is movably connected to the inner wall of the liquid outlet pipe (21).

2. A rapid screening device containing dimethylformamide aqueous solvent according to claim 1, characterized in that: An electric heater (2) is fixedly installed inside the stirring tank body (1), and a controller (3) is provided on the outer wall of the stirring tank body (1).

3. A rapid screening device containing dimethylformamide aqueous solvent according to claim 1, characterized in that: A driving motor (4) is provided at the upper end of the stirring tank body (1); an output end of the driving motor (4) is connected to a transmission rod (5); and a stirring blade (6) is fixedly mounted on the outer wall of the transmission rod (5).

4. The rapid screening device containing dimethylformamide aqueous solvent according to claim 1, characterized in that: A discharge pipe (7) is provided at the lower end of the stirring tank body (1); the other end of the discharge pipe (7) is connected to a water pump (8); the other end of the water pump (8) is movably connected to a delivery pipe (9); the other end of the delivery pipe (9) is fixedly mounted with a first docking piece (10); a screw (11) penetrates one side of the first docking piece (10).

5. The rapid screening device containing dimethylformamide aqueous solvent according to claim 1, characterized in that: A filter (12) is provided on one side of the stirring tank body (1), a butt joint tube (13) is provided at the upper end of the filter (12), a second butt joint piece (14) is fixedly mounted on the upper end of the butt joint tube (13), and a sealing ring (15) is movably connected to the upper end of the second butt joint piece (14).

6. A rapid screening device containing dimethylformamide aqueous solvent according to claim 5, characterized in that: The sealing ring (15) is movably connected to the second docking piece (14), and the sealing ring (15) is made of rubber.

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