Dehydrating and drying device for organic solvent

Abstract

The utility model relates to the technical field of organic chemical synthesis, in particular to an organic solvent dewatering and drying device which comprises a mounting frame convenient to move and a barrel structure used for drying an organic solvent, and the barrel structure is tightly filled with a plurality of molecular sieves and comprises a middle barrel, a first cover and a second cover. Filtering sieve plates are fixed in the first cover body and the second cover body, the first cover body and the second cover body are detachably connected with the two ends of the middle cylinder respectively, the first cover body and the second cover body are each provided with a pipeline connector communicated with the interior of the first cover body and the interior of the second cover body, and the multiple molecular sieves are limited between the two filtering sieve plates; the multiple barrel structures are fixed to the mounting frame and connected in series through the pipeline connectors arranged on the first cover and the second cover, and the water removing and drying device is convenient to move and maintain, good in organic solvent water removing effect and high in efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of organic chemical synthesis, and more specifically, to a dehydration and drying device for an organic solvent. Background Art

[0002] Some organic chemical syntheses have extremely high requirements on the water content of the organic solvents used in the synthesis (water content is less than 30ppm), so it is necessary to perform a dehydration operation on the organic solvent to remove trace water in the organic solvent. In the related art, the dehydration and drying device is generally installed in a storage barrel for storing the organic solvent. This method has the disadvantages of limited dehydration efficiency, limited mobility and difficult maintenance. Therefore, an external dehydration and drying device is required. At present, there is no better external dehydration and drying device for organic solvents. Utility Model Content

[0003] In order to solve the problems in the related art that the dehydration and drying device installed in the storage barrel has limited dehydration efficiency, restricted mobility and difficult maintenance, the present application provides a dehydration and drying device for organic solvents to fill the current gap in external dehydration and drying devices for organic solvents.

[0004] A dehydration and drying device for an organic solvent comprises a mounting frame that is easy to move and a barrel structure for drying the organic solvent, wherein a plurality of molecular sieves are tightly filled inside the barrel structure, the barrel structure comprises an intermediate barrel, a first cover body and a second cover body, filter screen plates are fixed inside the first cover body and the second cover body, the first cover body and the second cover body are detachably connected to the two ends of the intermediate barrel respectively, the first cover body and the second cover body are both provided with pipe joints connecting the interior thereof, a plurality of the molecular sieves are limited between the two filter screen plates, the number of the barrel structure is at least one, a plurality of the barrel structures are fixed on the mounting frame and the plurality of the barrel structures are connected in series via pipe joints connected to conduits provided on the first cover body and the second cover body.

[0005] Preferably, sealing rings are provided between the first cover body, the second cover body and the intermediate cylinder.

[0006] Preferably, both ends of the intermediate tube are provided with clamps, and the first cover body and the second cover body are respectively connected and fixed to the intermediate tube through the clamps at both ends of the intermediate tube.

[0007] Preferably, the mounting frame comprises a base plate, a rotating shaft, a vertical plate, a universal wheel, and a bolt. There are two vertical plates, and the two vertical plates are fixed to the top surface of the base plate and are parallel and symmetrically arranged. There are four universal wheels, and the four universal wheels are distributed at the four corners of the bottom surface of the base plate and are connected and fixed to the base plate. A connecting hole is provided on the side wall at the top position of each vertical plate, and the two connecting holes are aligned, and a threaded hole connected to the connecting hole is provided on the top surface of each vertical plate. There are two bolts, and each bolt is threadedly connected to one of the threaded holes. The rotating shaft crosses the two connecting holes, and a bearing is provided in each connecting hole. The two bearings are connected to the rotating shaft to support the rotation of the rotating shaft. The rotating shaft is respectively provided with two slots matching the bolts at the parts located in the two connecting holes, and the rotation of the rotating shaft is limited when the two bolts are respectively inserted into the two slots. The cylinder structure is located between the two vertical plates, and the intermediate cylinder of the cylinder structure is welded and fixed to the rotating shaft and is arranged vertically.

[0008] Preferably, a handle is provided on the outer wall of the intermediate cylinder.

[0009] The beneficial technical effects of the present application are as follows: the cylinder structure is a water removal component, which is externally placed on a movable mounting frame, and its movement and maintenance are relatively convenient. The water removal principle of the cylinder structure is to respectively connect an external storage barrel and an input end of a circulating water pump through two pipe joints, and the output end of the circulating water pump is connected to the storage barrel. The organic solvent in the storage barrel flows into the cylinder structure, and the molecular sieve in the cylinder structure is used to adsorb the moisture in the organic solvent to achieve water removal. The organic solvent after water removal flows into the input end of the circulating water pump, and is circulated back to the storage barrel through the action of the circulating water pump. After multiple cycles, the water removal effect of the organic solvent is better. When there are multiple cylinder structures and they are connected in series through a conduit, the cylinder structure at the first position is connected to the storage barrel, and the cylinder structure at the end is connected to the input end of the circulating water pump. When multiple cylinder structures are connected in series, each time the organic solvent circulates, it can contact more molecular sieves, thereby improving the water removal effect of each cycle of the organic solvent, which is beneficial to reducing the starting frequency of the circulating water pump and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of an organic solvent dehydration and drying device according to this embodiment.

[0011] Figure 2 Schematic diagram of the structure of the first cover body of this embodiment.

[0012] Figure 3 It is a schematic diagram of the connection structure between the intermediate cylinder and the sealing ring of this embodiment.

[0013] Figure numerals: 1. mounting frame; 11. bottom plate; 12. rotating shaft; 121. slot; 13. vertical plate; 131. connecting hole; 132. threaded hole; 14. universal wheel; 15. bolt; 16. bearing; 2. cylinder structure; 21. intermediate cylinder; 211. annular groove; 212. handle; 22. first cover body; 221. hollow cone portion; 222. annular portion; 23. second cover body; 24. filter screen plate; 25. sealing ring; 26. clamp; 27. pipe joint. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0015] Reference Figure 1 , Figure 2 and Figure 3, a dehydration and drying device for an organic solvent, comprising a mounting frame 1, a barrel structure 2, the number of the barrel structures 2 is three, each barrel structure 2 comprises an intermediate barrel 21, a first cover body 22 and a second cover body 23, the intermediate barrel 21 is a cylindrical barrel, the first cover body 22 comprises a hollow conical portion 221 and an annular portion 222 arranged from top to bottom, the structure of the second cover body 23 is consistent with the structure of the first cover body 22, and the bottom end surface dimensions of the first cover body 22 and the second cover body 23 match the end surface dimension of the intermediate barrel 21, a filtering screen plate 24 is arranged inside the first cover body 22 and the second cover body 23, both end surfaces of the intermediate barrel 21 are concavely provided with annular grooves 211, sealing rings 25 are placed in the two annular grooves 211, a sealing ring 25 is pressed down on the bottom end surface of the first cover body 22 and fits with the end surface of the intermediate barrel 21 corresponding to the sealing ring 25, another sealing ring 25 is pressed down on the bottom end surface of the second cover body 23 and fits with the sealing ring The sealing ring 25 fits with the end face of the intermediate cylinder 21 corresponding to it, and both ends of the intermediate cylinder 21 are provided with a hoop 26. The first cover body 22 and the second cover body 23 are respectively connected and fixed to the intermediate cylinder 21 through two hoop 26. The contact parts of the first cover body 22 and the second cover body 23 with the hoop 26 are both annular parts 222. The first cover body 22 and the second cover body 23 and the intermediate cylinder 21 are detachably installed through the two hoop 26. The hoop 26 is a prior art, and its structure is not limited in this embodiment. It should be selected to match the two objects to be connected. Each cylinder structure 2 is tightly filled with a plurality of molecular sieves, and the molecular sieve adopts 3A molecular sieve. The plurality of molecular sieves are limited to the middle of the two filter sieve plates 24. The top of the first cover body 22 and the second cover body 23 are provided with a pipe joint 27 connecting the interior thereof. The filter sieve plate 24 is a plate body evenly distributed with a plurality of through holes, and the inner diameter of the through holes is set to prevent the molecular sieve from passing through.

[0016] Reference Figure 1The mounting frame 1 includes a bottom plate 11, a rotating shaft 12, a vertical plate 13, a universal wheel 14, and a bolt 15. There are two vertical plates 13, and the two vertical plates 13 are fixed to the top surface of the bottom plate 11 and are parallel and symmetrically arranged. There are four universal wheels 14, which are distributed at the four corners of the bottom surface of the bottom plate 11 and are connected and fixed to the bottom plate 11. A connecting hole 131 is opened on the side wall at the top position of each vertical plate 13, and the two connecting holes 131 are aligned, and a threaded hole 132 connected to the connecting hole 131 is opened on the top surface of each vertical plate 13. There are two bolts 15 and each bolt 15 is threadedly connected to one of the threaded holes 132. The rotating shaft 12 crosses the two connecting holes 131, and a bearing 16 is arranged in each connecting hole 131. The two bearings 16 are connected to the rotating shaft 12 to support the rotating shaft 12 to rotate. The rotating shaft 12 is respectively provided with two connecting holes 131. The plurality of cylindrical structures 2 are arranged at intervals along the length direction of the rotating shaft 12 and are all between the two vertical plates 13. The universal wheel 14 is used to push the mounting frame 1 to move the cylindrical structure 2 fixed on the mounting frame 1. The bolts 15 are twisted so that the bolts 15 are moved out of the slots 121 to realize the rotation of the rotating shaft 12. The rotation of the rotating shaft 12 facilitates the flipping of the cylindrical structure 2. The first cover 22 and the cylindrical structure 2 are separated so that the molecular sieve in the cylindrical structure 2 can be poured out when the cylindrical structure 2 is flipped, which makes it convenient to replace the molecular sieve.

[0017] Reference Figure 1 , the multiple cylinder structures 2 are numbered from left to right as No. 1, No. 2, and No. 3. The pipe joint 27 provided on the first cover body 22 of the No. 1 cylinder structure 2 is connected with the pipe joint 27 provided on the first cover body 22 of the No. 2 cylinder structure 2 through a conduit, and the pipe joint 27 provided on the second cover body 23 of the No. 2 cylinder structure 2 is connected with the pipe joint 27 provided on the second cover body 23 of the No. 3 cylinder structure 2 through a conduit, thereby realizing the series connection of the three cylinder structures 2.

[0018] Reference Figure 3 Furthermore, a handle 212 is provided on the outer wall of the middle cylinder 21 of each cylinder structure 2, and pulling the handle 212 facilitates the turning of the cylinder structure 2.

[0019] The implementation principle of the dehydration and drying device for organic solvents in the present application is as follows: the mounting frame 1 is pushed close to the storage barrel where the organic solvent is stored, a conduit is taken to connect the discharge port of the storage barrel with the pipe joint 27 provided on the first cover body 22 of the No. 3 cylinder structure 2, an external circulating water pump is taken to connect the input end of the circulating water pump with the pipe joint 27 provided on the second cover body 23 of the No. 1 cylinder structure 2, and the output end of the circulating water pump is connected with the feed port of the storage barrel, the organic solvent in the storage barrel flows through the No. 1, No. 2, and No. 3 cylinder structures 2, the water contained in the organic solvent is adsorbed by the molecular sieve inside the cylinder structure 2 to achieve dehydration of the organic solvent, the dehydrated organic solvent flows into the input end of the circulating water pump, and is pumped back into the storage barrel by the circulating water pump to complete a dehydration operation, and the water content in the organic solvent reaches the required range through multiple cycles. The cylinder structure 2 of the present application is a water removal component, which is externally mounted on a movable mounting frame 1 and is convenient to move and maintain. The external cylinder structure 2 has a large installation space, is convenient for setting up multiple units in series, and has a high water removal efficiency.

[0020] Although the embodiments of the present application 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 application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A dehydration and drying device for an organic solvent, characterized in that: It comprises a mounting frame which is easy to move and a barrel structure for drying organic solvents, wherein a plurality of molecular sieves are tightly filled inside the barrel structure, wherein the barrel structure comprises an intermediate barrel, a first cover body and a second cover body, wherein filter screen plates are fixed inside the first cover body and the second cover body, wherein the first cover body and the second cover body are respectively detachably connected to the two ends of the intermediate barrel, wherein the first cover body and the second cover body are both provided with pipe joints connecting the interior thereof, wherein a plurality of the molecular sieves are limitedly located between the two filter screen plates, wherein the number of the barrel structure is at least one, wherein a plurality of the barrel structures are all fixed on the mounting frame and the plurality of the barrel structures are connected in series via pipe joints connected to conduits provided on the first cover body and the second cover body.

2. The dehydration and drying device for an organic solvent according to claim 1, characterized in that: A sealing ring is provided between the first cover body, the second cover body and the intermediate cylinder.

3. The dehydration and drying device for an organic solvent according to claim 1, characterized in that: Both ends of the intermediate tube are provided with clamps, and the first cover body and the second cover body are connected and fixed to the intermediate tube through the clamps at both ends of the intermediate tube respectively.

4. The dehydration and drying device for an organic solvent according to claim 1, characterized in that: The mounting frame includes a base plate, a rotating shaft, a vertical plate, a universal wheel, and a bolt. There are two vertical plates, and the two vertical plates are fixed to the top surface of the base plate and are parallel and symmetrically arranged. There are four universal wheels, and the four universal wheels are distributed at the four corners of the bottom surface of the base plate and are connected and fixed to the base plate. A connecting hole is opened on the side wall at the top position of each vertical plate, and the two connecting holes are aligned, and a threaded hole connected to the connecting hole is opened on the top surface of each vertical plate. There are two bolts, and each bolt is threadedly connected to one of the threaded holes. The rotating shaft crosses the two connecting holes, and a bearing is arranged in each connecting hole. The two bearings are connected to the rotating shaft to support the rotation of the rotating shaft. The rotating shaft is respectively provided with two slots matching the bolts at the parts of the rotating shaft located in the two connecting holes. When the two bolts are respectively inserted into the two slots, the rotating shaft is limited to rotate. The cylinder structure is located between the two vertical plates, and the intermediate cylinder of the cylinder structure is welded and fixed to the rotating shaft and is arranged vertically.

5. The dehydration and drying device for an organic solvent according to claim 4, characterized in that: The outer wall of the intermediate cylinder is provided with a handle.

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