Purification treatment device for 2-methyl-5-nitroimidazole

Abstract

The utility model discloses a purification treatment device for 2-methyl-5-nitroimidazole, which relates to the technical field of chemical equipment and comprises a cleaning box, the lower end of the cleaning box is connected with a first connector of a three-way valve, a second connector of the three-way valve is connected with a crystallization box, and a third connector of the three-way valve is connected with a collection box for temporarily storing liquid discharged from the cleaning box. The cleaning device comprises a cleaning box, a cover plate used for sealing the cleaning box is arranged on the cleaning box, a lifting device is arranged on the cover plate, the lifting device is used for supporting 2-methyl-5-nitroimidazole to ascend and descend to make contact with water in the cleaning box for cleaning, and the lifting device comprises a telescopic rod arranged on the cover plate. A fixed block is arranged at the top of the telescopic rod and used for pushing the fixed block to ascend and descend, and a movable rod is connected to one side of the fixed block. According to the cleaning device for the 2-methyl-5-nitroimidazole, the lifting device is arranged, so that the 2-methyl-5-nitroimidazole can be lifted to be in contact with water for cleaning, the cleaning effect is improved, the water in the cleaning box can better clean the 2-methyl-5-nitroimidazole, and the cleaning time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a 2-methyl-5-nitroimidazole purification treatment device. Background Art

[0002] 2-Methyl-5-nitroimidazole is a chemical with the molecular formula C4H5N3O2. It is primarily used as a pharmaceutical intermediate. It is a white or light yellow crystalline powder with a slight odor and a bitter and slightly salty taste. It is insoluble in water, slightly soluble in methanol and ethanol, and readily soluble in strong acids and bases.

[0003] In the prior art, a utility model patent with announcement number CN214516396U provides a 2-methyl-5-nitroimidazole purification and treatment device, which relates to a chemical equipment, specifically including a crystallization box and a cleaning box installed above the crystallization box, wherein the two ends of the top surface of the crystallization box are respectively fixedly connected to the bottom end of a vertically installed support rod, and the top of the support rod is respectively fixedly connected to the two ends of the bottom surface of the cleaning box. A discharge port is provided at the bottom of the cleaning box, which is fixedly connected to one side port of the three-way valve, and the other side port of the three-way valve is fixedly connected to the top of the crystallization box. The middle port of the three-way valve is connected to an external wastewater collection device, and a box cover is fixed to the top of the cleaning box by bolts, and the two ends of the bottom surface of the box cover are respectively connected to a vertically installed connecting rod, and the bottom end of the connecting rod is respectively fixedly connected to the two ends of the top surface of the filter.

[0004] In the 2-methyl-5-nitroimidazole purification treatment device, during cleaning, 2-methyl-5-nitroimidazole and water cannot be repeatedly moved up and down to contact each other. The stirring blades contacting 2-methyl-5-nitroimidazole can easily cause equipment damage and 2-methyl-5-nitroimidazole loss, affecting the cleaning effect. Therefore, we propose a 2-methyl-5-nitroimidazole purification treatment device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a 2-methyl-5-nitroimidazole purification treatment device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a 2-methyl-5-nitroimidazole purification processing device, comprising a washing box, the lower end of the washing box is connected to the first interface of a three-way valve, the second interface of the three-way valve is connected to a crystallization box, the third interface of the three-way valve is connected to a collection box for temporarily storing liquid discharged from the washing box, the washing box is provided with a cover plate for sealing the washing box, the cover plate is provided with a lifting device, the lifting device is used to support the 2-methyl-5-nitroimidazole to rise and fall and contact with water in the washing box for cleaning, the lifting device comprises a telescopic rod provided on the cover plate, the top of the telescopic rod is provided with a fixed block and is used to push the fixed block to rise and fall, a movable rod is connected to one side of the fixed block, the bottom of the movable rod moves through the cover plate and is connected to a filter cartridge for placing 2-methyl-5-nitroimidazole, and an air pump is provided on the inner wall of the washing box below the filter cartridge.

[0007] Preferably, the aerating device is used to aerate the liquid in the cleaning tank.

[0008] Preferably, the inflating device includes an air cylinder arranged at the bottom of the cover plate, and the air cylinder is provided with an air outlet pipe for discharging the gas in the air cylinder.

[0009] Preferably, the air cylinder is provided with an air intake pipe for intake of air into the air cylinder.

[0010] Preferably, the telescopic length of the telescopic rod is greater than the maximum distance between the filter cartridge and the air cylinder, and the fixed block is used to support the lifting of the movable rod.

[0011] Preferably, the diameter of the filter cartridge is smaller than the distance between the two sets of movable rods, and the filter cartridge is raised and lowered in the cleaning box.

[0012] Preferably, a feed port for conveying materials into the cleaning box is provided on the cover plate outside the air cylinder.

[0013] Preferably, the air pump has a structure similar to that of a foot pump.

[0014] Preferably, the length of the air outlet pipe is less than or equal to the height of the cleaning box.

[0015] Preferably, the air outlet pipe is a hose.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Put 2-methyl-5-nitroimidazole into the filter cartridge, put water into the cleaning tank, clean the 2-methyl-5-nitroimidazole, then drive the telescopic rod to extend and retract, drive the fixed block, mobile rod and filter cartridge to rise and fall, and the filter cartridge is repeatedly lifted and lowered, so that the 2-methyl-5-nitroimidazole follows the repeated lifting and contact with water for cleaning, and removes the water-soluble impurities on the surface of the 2-methyl-5-nitroimidazole. After cleaning is completed, open the three-way valve, and then discharge the cleaning wastewater in the cleaning tank into the collection box for collection, so that the 2-methyl-5-nitroimidazole can be lifted and lowered to contact with water for cleaning, thereby improving the cleaning effect.

[0018] 2. When the filter cartridge is repeatedly raised and lowered in the cleaning box, the air cylinder will be repeatedly squeezed. The air cylinder is compressed and the gas is introduced into the air outlet pipe through the air inlet pipe, and then into the water through the air outlet pipe. When the compression force is removed, the air cylinder automatically rebounds and inhales the external gas through the air inlet pipe, so that it can be used repeatedly. The gas is introduced into the water, relying on more bubbles to increase the contact area between water and air. At the same time, bubbles are lighter than water. The bubbles in the water will move upward, which can drive the vertical movement of the water, so that the water in the cleaning box can better clean 2-methyl-5-nitroimidazole, saving cleaning time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a structural diagram of the lifting device in the utility model;

[0021] Figure 3 It is a structural schematic diagram of the air pumping device in the utility model.

[0022] In the figure: 1. Cleaning box; 2. Three-way valve; 3. Crystallization box; 4. Collection box; 5. Cover plate; 6. Lifting device; 61. Telescopic rod; 62. Fixed block; 63. Moving rod; 64. Filter cartridge; 7. Aeration device; 71. Air cylinder; 72. Air outlet pipe; 73. Air inlet pipe; 8. Feed port. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-3A 2-methyl-5-nitroimidazole purification treatment device includes a cleaning box 1, the lower end of the cleaning box 1 is connected to the first interface of the three-way valve 2, the second interface of the three-way valve 2 is connected to the crystallization box 3, and the third interface of the three-way valve 2 is connected to a collection box 4 for temporarily storing the liquid discharged from the cleaning box 1. The cleaning box 1 is provided with a cover plate 5 for sealing the cleaning box 1, and the cover plate 5 is provided with a lifting device 6. The lifting device 6 is used to support the lifting of 2-methyl-5-nitroimidazole to contact the water in the cleaning box 1 for cleaning. The lifting device 6 includes a telescopic rod 61 provided on the cover plate 5. A fixed block 62 is provided on the top of the telescopic rod 61 and is used to push the fixed block 62 to rise and fall. A moving rod 63 is connected to one side of the fixed block 62. The bottom of the moving rod 63 moves through the cover plate 5 and is connected to a filter cartridge 64 for placing 2-methyl-5-nitroimidazole. The telescopic length of the telescopic rod 61 is greater than the maximum distance between the filter cartridge 64 and the air cylinder 71. The telescopic rod 61 can be optionally pneumatic, hydraulic or electric. The fixed block 62 is used to support the lifting of the moving rod 63. The diameter of the filter cartridge 64 is smaller than the distance between the two sets of moving rods 63. The filter cartridge 64 is lifted and lowered in the cleaning box 1.

[0025] 2-methyl-5-nitroimidazole is put into the filter cartridge 64, and water is put into the cleaning box 1 to clean the 2-methyl-5-nitroimidazole. Then, the telescopic rod 61 is driven to extend and retract, driving the fixed block 62, the movable rod 63 and the filter cartridge 64 to rise and fall. The filter cartridge 64 is repeatedly raised and lowered, so that the 2-methyl-5-nitroimidazole follows the repeated lifting and lowering and contacts the water for cleaning. The water-soluble impurities on the surface of the 2-methyl-5-nitroimidazole are removed. After the cleaning is completed, the three-way valve 2 is opened, and the cleaning wastewater in the cleaning box 1 is discharged into the collection box 4 for collection, so that the 2-methyl-5-nitroimidazole can be raised and lowered to contact the water for cleaning, thereby improving the cleaning effect.

[0026] An air pumping device 7 is provided on the inner wall of the cleaning box 1 below the filter cartridge 64. The air pumping device 7 is used to inflate the liquid in the cleaning box 1. The air pumping device 7 includes an air cylinder 71 provided at the bottom of the cover plate 5. The air cylinder 71 is provided with an air outlet pipe 72 for discharging the gas in the air cylinder 71. The air cylinder 71 is provided with an air inlet pipe 73 for air intake into the air cylinder 71. The structure of the air cylinder 71 is similar to that of a foot-operated air pump (it can rebound independently after compression). The cover plate 5 outside the air cylinder 71 is provided with a feed port 8 for conveying materials into the cleaning box 1. The length of the air outlet pipe 72 is less than or equal to the height of the cleaning box 1. The air outlet pipe 72 is a hose, and the bottom of the air outlet pipe 72 is inserted into the filter cartridge 64.

[0027] When the filter cartridge 64 is repeatedly raised and lowered in the cleaning box 1, the air cylinder 71 will be repeatedly squeezed (multiple sets of cross bars (not marked in the accompanying drawings) can be set on the top of the filter cartridge 64 to ensure that the air cylinder 71 can be stably compressed when the filter cartridge 64 is raised and lowered). The air cylinder 71 compresses and introduces the gas into the air outlet pipe 72 through the air inlet pipe 72, and then into the water through the air outlet pipe 72. When the compression force is removed, the air cylinder 71 automatically rebounds and inhales the external gas through the air inlet pipe 73, so that it can be used repeatedly. The gas is introduced into the water, relying on more bubbles to increase the contact area between water and air. At the same time, bubbles are lighter than water. The bubbles in the water will move upward, which can drive the vertical movement of the water, so that the water in the cleaning box 1 can better clean 2-methyl-5-nitroimidazole, saving cleaning time.

[0028] Working principle: The utility model puts 2-methyl-5-nitroimidazole into the filter cartridge 64, puts water into the cleaning box 1, cleans the 2-methyl-5-nitroimidazole, and then drives the telescopic rod 61 to extend and retract, driving the fixed block 62, the moving rod 63 and the filter cartridge 64 to rise and fall. The filter cartridge 64 is repeatedly lifted and lowered, so that the 2-methyl-5-nitroimidazole follows the repeated lifting and comes into contact with water for cleaning, and removes the water-soluble impurities on the surface of the 2-methyl-5-nitroimidazole. After the cleaning is completed, the three-way valve 2 is opened, and the cleaning wastewater in the cleaning box 1 is discharged into the collection box 4 for collection, so that the 2-methyl-5-nitroimidazole can be lifted and lowered to come into contact with water for cleaning, thereby improving the cleaning effect. 1 will repeatedly squeeze the air cylinder 71 (multiple sets of cross bars (not marked in the accompanying drawings) can be set on the top of the filter cartridge 64 to ensure that the air cylinder 71 can be stably compressed when the filter cartridge 64 is raised or lowered). The air cylinder 71 compresses and introduces the gas into the air outlet pipe 72 through the air inlet pipe 72, and then into the water through the air outlet pipe 72. When the compression force is removed, the air cylinder 71 automatically rebounds and inhales the external gas through the air inlet pipe 73, so that it can be used repeatedly. The gas is introduced into the water, relying on more bubbles to increase the contact area between water and air. At the same time, bubbles are lighter than water. The bubbles in the water will move upward, which can drive the vertical movement of the water, so that the water in the cleaning box 1 can better clean 2-methyl-5-nitroimidazole, saving cleaning time.

[0029] After discharging waste water in the cleaning box 1, close the three-way valve 2, then in the cleaning box 1, inject hydrochloric acid solution, 2-methyl-5-nitroimidazole is dissolved in the hydrochloric acid solution, after 2-methyl-5-nitroimidazole dissolves, open the three-way valve 2, so that solution flows into the crystallization box 3 and carries out crystallization, completes the purification process work; The inner bottom surface of the crystallization box 3 is fixedly equipped with a heating plate by bolts, and the heating plate is a cast aluminum heating plate and is powered by an external power supply, and the hydrochloric acid inside the crystallization box 3 is heated by the heating plate, so that the 2-methyl-5-nitroimidazole is recrystallized, and a side top of the crystallization box 3 offers an air outlet, and the air outlet is connected with the hydrochloric acid collecting device outside, and the other side of the crystallization box 3 is equipped with a sealing plate, which is convenient to take the 2-methyl-5-nitroimidazole after the crystallization by opening the sealing plate, which is prior art and will not be repeated here.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 2-methyl-5-nitroimidazole purification treatment device, comprising a cleaning box (1), wherein the lower end of the cleaning box (1) is connected to a first interface of a three-way valve (2), and the second interface of the three-way valve (2) is connected to a crystallization box (3), characterized in that: The third interface of the three-way valve (2) is connected to a collection box (4) for temporarily storing liquid discharged from the cleaning box (1). The cleaning box (1) is provided with a cover plate (5) for sealing the cleaning box (1). The cover plate (5) is provided with a lifting device (6). The lifting device (6) is used to support the 2-methyl-5-nitroimidazole to rise and fall so as to contact with water in the cleaning box (1) for cleaning. The lifting device (6) includes a telescopic rod (61) provided on the cover plate (5). A fixed block (62) is provided on the top of the telescopic rod (61) and is used to push the fixed block (62) to rise and fall. A moving rod (63) is connected to one side of the fixed block (62). The bottom of the moving rod (63) moves through the cover plate (5) and is connected to a filter cartridge (64) for placing 2-methyl-5-nitroimidazole. An air pumping device (7) is provided on the inner wall of the cleaning box (1) below the filter cartridge (64).

2. The 2-methyl-5-nitroimidazole purification treatment device according to claim 1, characterized in that: The aerating device (7) is used to aerate the liquid in the cleaning box (1).

3. The 2-methyl-5-nitroimidazole purification treatment device according to claim 2, characterized in that: The air pumping device (7) comprises an air cylinder (71) provided at the bottom of the cover plate (5), and an air outlet pipe (72) for discharging the air in the air cylinder (71) is provided on the air cylinder (71).

4. The 2-methyl-5-nitroimidazole purification treatment device according to claim 3, characterized in that: The air cylinder (71) is provided with an air intake pipe (73) for intake of air into the air cylinder (71).

5. The 2-methyl-5-nitroimidazole purification treatment device according to claim 1, characterized in that: The telescopic length of the telescopic rod (61) is greater than the maximum distance between the filter cartridge (64) and the air cylinder (71), and the fixed block (62) is used to support the lifting of the moving rod (63).

6. The 2-methyl-5-nitroimidazole purification treatment device according to claim 1, characterized in that: The diameter of the filter cartridge (64) is smaller than the distance between the two sets of moving rods (63), and the filter cartridge (64) rises and falls in the cleaning box (1).

7. The 2-methyl-5-nitroimidazole purification treatment device according to claim 3, characterized in that: A feed port (8) for conveying material into the cleaning box (1) is provided on the cover plate (5) outside the air cylinder (71).

8. The 2-methyl-5-nitroimidazole purification treatment device according to claim 3, characterized in that: The length of the air outlet pipe (72) is less than or equal to the height of the cleaning box (1).

9. The 2-methyl-5-nitroimidazole purification treatment device according to claim 8, characterized in that: The air outlet pipe (72) is a hose.

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