Solvent recovery device for Grignard reaction

Abstract

The utility model relates to a solvent recovery device for Grignard reaction. The solvent recovery device comprises a tank body, a water inlet is formed in the tank body, a filter plate is arranged in the tank body, a filter screen is installed on the filter plate, a cover plate is arranged at an opening in the top of the tank body, a lifting mechanism is arranged on the tank body, the cover plate is connected with the filter plate, and a blow-off pipe is arranged on the lower side of the tank body. A water outlet pipe and an oil outlet pipe are arranged on the side wall of the tank body; when the filter screen on the filter plate is used for a period of time and needs to be cleaned, the lifting mechanism drives the cover plate to further drive the filter plate to move, so that the filter screen on the filter plate can be cleaned, and the filter screen on the filter plate can be cleaned. The filter screen is detached from the filter plate at the opening of the tank body for replacement, the lifting mechanism sends the filter plate back into the tank body, and the device has the effect that the filter plate is convenient to detach and replace.

Description

Technical Field

[0001] The present application relates to the field of Grignard reaction equipment, and in particular to a solvent recovery device for Grignard reaction. Background Art

[0002] When preparing triphenylphosphine by the Grignard method, the reaction solution needs to be recovered and reused to reduce the amount of solution used and improve the reaction yield.

[0003] The recovered solution is a mixture of water phase and oil phase. The oil phase needs to be separated from the water phase and then recovered for reuse. However, when the oil phase and the water phase are separated, there are more solid impurities in the water phase, which are easily carried out with the oil phase during separation. A filter is usually used to filter out the impurities, but the filter needs to be cleaned after multiple filtrations. When cleaning, the bottom of the separation tank needs to be opened manually and the filter needs to be disassembled and cleaned, which is inconvenient to operate. Utility Model Content

[0004] In order to solve the problem of inconvenience in manually disassembling and cleaning the filter screen inside the separation tank, the present application provides a solvent recovery device for Grignard reaction.

[0005] The present application provides a Grignard reaction solvent recovery device that adopts the following technical solution:

[0006] A solvent recovery device for a Grignard reaction comprises a tank body, wherein the tank body is provided with a water inlet, a filter plate is provided in the tank body, a filter screen is detachably mounted on the filter plate, the filter plate is slidingly connected to the tank body, an opening is provided at the top of the tank body, a cover plate is provided at the opening of the tank body, a lifting mechanism for driving the cover plate to move is provided on the tank body, the cover plate is connected to the filter plate, a sewage pipe is provided on the lower side of the tank body, and a water outlet pipe and an oil outlet pipe are provided on the side wall of the tank body and at a position above the filter plate.

[0007] By adopting the above technical solution, the mixed liquid enters the tank body through the water inlet, and is filtered through the filter screen. At this time, the mixed liquid is separated in the tank body, the oil phase is sent out through the oil outlet pipe, the water phase is sent out through the water outlet pipe, and the solid matter is discharged through the sewage pipe. When the filter screen on the filter plate needs to be cleaned after being used for a period of time, the lifting mechanism drives the cover plate and then drives the filter plate to move. The filter screen is removed from the filter plate at the opening of the tank body and replaced, and the lifting mechanism then sends the filter plate back to the tank body, making the disassembly, assembly and replacement of the filter plate convenient.

[0008] Optionally, the lifting mechanism includes a lifting cylinder and a connecting plate, the lifting cylinder is arranged at the outer wall of the tank body, the driving direction of the lifting cylinder is the same as the sliding direction of the filter plate, the connecting plate is arranged at one end of the piston rod of the lifting cylinder, and the cover plate is connected to the connecting plate.

[0009] By adopting the above technical solution, the lifting cylinder drives the connecting plate at one end of the piston rod to move, thereby driving the cover plate to move, and the cover plate drives the filter plate to move. When the cover plate is opened, the filter plate can be taken out and the filter screen can be replaced, which is easy to operate.

[0010] Optionally, a mounting hole is provided on the filter plate, the filter screen is placed at the mounting hole of the filter plate, an insert block is provided on the filter screen, a slot for inserting one side of the insert block is provided on the filter plate at the mounting hole, and locking pieces are provided on the filter plate at opposite sides of the insert block, and the locking pieces are used to limit the insert block.

[0011] By adopting the above technical solution, during installation, the filter is placed on the mounting hole on the filter plate. At this time, the plug is inserted into the slot of the filter plate. The locking piece on the filter plate clamps and limits the two sides of the plug, making the operation of installing the filter more convenient.

[0012] Optionally, the locking member includes a spring and a positioning block, the filter plate is provided with a positioning groove at the side wall of the slot, the positioning block is slidably installed in the positioning groove of the filter plate, the spring is arranged at the positioning groove, one end of the spring is connected to one side of the positioning block, and a slot is provided on the side wall of the insert block for embedding one side of the positioning block.

[0013] By adopting the above technical solution, when the insertion block is located in the slot, the spring pushes the positioning block to slide, and one end of the positioning block is inserted in the card slot of the insertion block. The positioning blocks on both sides limit the position of the insertion block. When the filter needs to be removed, the positioning block is pulled to slide and separate from the insertion block to remove the filter. The disassembly and assembly of the filter is relatively convenient.

[0014] Optionally, a guide sleeve is provided on the outer side wall of the tank body, a guide rod is slidably installed on the guide sleeve, the guide rod slides along the sliding direction of the filter plate, and one end of the guide rod is connected to the cover plate.

[0015] By adopting the above technical solution, when the lifting cylinder drives the cover plate to slide, the cover plate drives the guide rod to slide along the guide sleeve, thereby assisting in limiting the sliding of the cover plate.

[0016] Optionally, a stirring member is provided at the bottom of the tank body, and the stirring member includes a stirring motor and a stirring shaft. The stirring shaft is rotatably installed on the inner bottom wall of the tank body. The stirring motor is provided at the bottom of the tank body, and the stirring shaft is connected to the output shaft of the stirring motor. The stirring shaft is provided with stirring blades.

[0017] By adopting the above technical solution, the stirring motor drives the stirring shaft to rotate, and the stirring shaft drives the stirring blades to rotate. The bottom stirring disperses the oil droplets in the water phase and then floats up, resulting in a better separation effect.

[0018] Optionally, a brush plate is provided on the upper side of the stirring shaft, the brush plate and the filter are distributed parallel to each other, bristles are provided on the brush plate, and one end of the bristles facing away from the brush plate is in contact with a side surface of the filter.

[0019] By adopting the above technical solution, when the stirring shaft rotates, it drives the brush plate to rotate, and the bristles on the brush plate brush and clean the filter, reducing the probability of clogging of the filter and thereby reducing the frequency of filter replacement.

[0020] Optionally, a scraper is provided at one end of the brush plate away from the stirring shaft, the scraper and the brush plate are perpendicular to each other, and one side of the scraper is in contact with the inner wall of the tank body.

[0021] By adopting the above technical solution, when the stirring shaft rotates, the scraper is driven to rotate to clean the inner wall of the tank body, thereby reducing the problem of solid matter adhering to the inner wall of the tank body and making it inconvenient to clean.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The mixed liquid enters the tank through the water inlet and is filtered through the filter screen before separation. The oil phase is sent out through the oil outlet pipe, the water phase is sent out through the water outlet pipe, and the solid matter is discharged through the sewage pipe. When the filter screen on the filter plate needs to be cleaned after being used for a period of time, the lifting mechanism drives the cover plate and then drives the filter plate to move. The filter screen is removed from the filter plate at the opening of the tank and replaced. The lifting mechanism then sends the filter plate back into the tank. The disassembly and replacement of the filter plate is convenient;

[0024] 2. The filter is limited by the positioning block, and the filter can be easily disassembled and assembled;

[0025] 3. The stirring shaft drives the brush plate and scraper to clean the filter screen and the inner wall of the tank respectively to reduce the adhesion of solid matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of this application.

[0027] Figure 2 It is a cross-sectional view of the present application along the axis of the tank body.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the stirring element of the present application.

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the lifting mechanism of the present application driving the filter plate to move.

[0030] Figure 5 It is a schematic diagram of the cross-sectional structure of the locking member on the filter plate of the present application.

[0031] Figure 6 It is a schematic diagram of the cross-sectional structure of part A of this application.

[0032] Those skilled in the art will appreciate that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be exaggerated relative to other elements to help improve understanding of the embodiments of the present invention.

[0033] Figure numerals: 1. tank body; 11. cover plate; 111. connecting rod; 12. sewage pipe; 13. water inlet; 14. water outlet pipe; 15. oil outlet pipe; 16. guide sleeve; 17. guide rod; 2. filter plate; 21. mounting hole; 22. slot; 23. positioning slot; 3. filter screen; 31. plug-in block; 311. slot; 4. lifting mechanism; 41. lifting cylinder; 42. connecting plate; 5. stirring element; 51. stirring motor; 52. stirring shaft; 53. stirring blade; 54. brush plate; 541. bristles; 55. scraper; 6. locking member; 61. spring; 62. positioning block; 63. shift block. DETAILED DESCRIPTION

[0034] The present application is further described in detail below with reference to the accompanying drawings.

[0035] The present application discloses a Grignard reaction solvent recovery device, referring to Figure 1 and Figure 2 , including a tank body 1, which is a cylindrical hollow body. An opening is provided on the top of the tank body 1. A cover plate 11 is horizontally provided at the opening of the tank body 1. A sewage pipe 12 communicating with the interior of the tank body 1 is provided at the bottom of the tank body 1. A filter plate 2 is horizontally provided in the tank body 1. A filter screen 3 is detachably installed on the filter plate 2. The filter plate 2 slides vertically in the tank body 1. The filter plate 2 and the cover plate 11 are connected by a connecting rod 111. A water inlet 13 is provided at one side wall of the tank body 1 and at the lower side of the filter plate 2. A water outlet pipe 14 and an oil outlet pipe 15 are provided at the side wall of the tank body 1 and at the upper side of the filter plate 2. The mixed liquid enters the tank body 1 through the water inlet 13. At this time, after being filtered by the filter screen 3, the mixed liquid is separated in the tank body 1. The oil phase is sent out through the oil outlet pipe 15, the water phase is sent out through the water outlet pipe 14, and the solid matter is discharged through the sewage pipe 12. A lifting mechanism 4 connected to the cover plate 11 is provided on the outside of the tank body 1. When the filter screen 3 on the filter plate 2 needs to be cleaned after being used for a period of time, the lifting mechanism 4 drives the cover plate 11 and then drives the filter plate 2 to move, and the filter screen 3 is removed from the filter plate 2 at the opening of the tank body 1 and replaced. The lifting mechanism 4 then sends the filter plate 2 back into the tank body 1, making the disassembly, assembly and replacement of the filter plate 2 convenient.

[0036] Reference Figure 2 and Figure 3A stirring member 5 is provided at the bottom of the tank body 1. The stirring member 5 includes a stirring motor 51 and a stirring shaft 52. The stirring shaft 52 is vertically mounted on the inner bottom wall of the tank body 1. The stirring motor 51 is provided at the bottom of the tank body 1. The stirring shaft 52 is connected to the output shaft of the stirring motor 51. A stirring blade 53 is provided on the circumferential side wall of the stirring shaft 52. The stirring motor 51 drives the stirring shaft 52 to rotate, and the stirring shaft 52 drives the stirring blade 53 to rotate. The bottom stirring causes the oil droplets in the water phase to float up and disperse and separate.

[0037] Reference Figure 2 and Figure 3 A brush plate 54 is horizontally mounted on the upper side of the stirring shaft 52. Bristles 541 are located on the upward side of the brush plate 54. The upward end of the bristles 541 engages the downward side of the filter 3. Rotation of the stirring shaft 52 drives the brush plate 54 to rotate. The bristles 541 on the brush plate 54 clean the filter 3, reducing the probability of filter 3 being clogged and, in turn, reducing the frequency of filter 3 replacement.

[0038] Reference Figure 2 and Figure 3 A scraper 55 is vertically provided at one end of the brush plate 54 away from the stirring shaft 52. One side of the scraper 55 is in contact with the inner wall of the tank body 1. When the stirring shaft 52 rotates, the scraper 55 is driven to rotate to clean the inner wall of the tank body 1, thereby reducing the adhesion of solid matter on the inner wall of the tank body 1.

[0039] Reference Figure 4 The lifting mechanism 4 includes a lifting cylinder 41 and a connecting plate 42. The lifting cylinder 41 is vertically upwardly arranged on the outer wall of the tank body 1. The connecting plate 42 is arranged at one end of the piston rod of the lifting cylinder 41. The cover plate 11 is connected to the connecting plate 42. The lifting cylinder 41 drives the connecting plate 42 to move and then drives the cover plate 11 to move. The cover plate 11 drives the filter plate 2 to move. When the cover plate 11 is opened, the filter plate 2 can be brought out to the opening.

[0040] Reference Figure 4 A guide sleeve 16 is provided on the outer wall of the tank body 1, and a guide rod 17 is installed on the guide sleeve 16 for sliding in the vertical direction. The upward end of the guide rod 17 is connected to one side of the cover plate 11. When the lifting cylinder 41 drives the cover plate 11 to slide, the cover plate 11 drives the guide rod 17 to slide along the guide sleeve 16, thereby assisting in limiting the sliding of the cover plate 11.

[0041] Reference Figure 4 and Figure 5A through mounting hole 21 is provided on the filter plate 2, and the filter screen 3 is placed at the mounting hole 21 of the filter plate 2. Insert blocks 31 are provided on opposite sides of the filter screen 3, and a slot 22 is provided at the mounting hole 21 of the filter plate 2. During installation, the filter screen 3 is placed at the mounting hole 21 on the filter plate 2, and the insert blocks 31 are inserted into the slots 22 of the filter plate 2.

[0042] Reference Figure 5 and Figure 6 , locking members 6 are provided on the filter plate 2 at opposite sides of the insertion block 31, and the locking members 6 include a spring 61 and a positioning block 62. Positioning grooves 23 are provided on the opposite side walls of the filter plate 2 located at the slot 22, and the positioning block 62 is horizontally slidably installed in the positioning groove 23 of the filter plate 2. The spring 61 is horizontally arranged in the positioning groove 23, and one end of the spring 61 is connected to one side of the positioning block 62. The end of the spring 61 facing away from the positioning block 62 is connected to a side wall of the filter plate 2 located at the positioning groove 23. A card slot 311 is provided on the side wall of the insertion block 31.

[0043] Reference Figure 6 The positioning block 62 is located on the side away from the spring 61 and is provided with an inclined cross-section on the upper side edge line. The insertion block 31 is located on the two side edges facing the lower side and is provided with a cross-section angle with the same angle as the cross-section angle. When the filter screen 3 is installed on the filter plate 2, the insertion block 31 is located on the upper side of the slot 22. The insertion block 31 is pressed, and the cross-section side of the insertion block 31 pushes the cross-section side of the positioning block 62 and then pushes the insertion block 31 to slide. At this time, the spring 61 is compressed. When the insertion block 31 is located in the slot 22, the spring 61 pushes the positioning block 62 to press against the card slot 311. The positioning blocks 62 on both sides limit the position of the insertion block 31.

[0044] Reference Figure 6 A shift block 63 is provided on the upper side of the positioning block 62, and one end of the shift block 63 is located on the outside of the filter plate 2. When the filter screen 3 needs to be removed, the shift block 63 is pulled to drive the positioning block 62 to slide and separate from the insertion block 31, and the filter screen 3 is removed.

[0045] The implementation principle of the solvent recovery device for Grignard reaction in the embodiment of the present application is as follows: the mixed liquid enters the tank body 1 through the water inlet 13, is filtered through the filter screen 3, and is separated in the tank body 1, the oil phase is sent out through the oil outlet pipe 15, the water phase is sent out through the water outlet pipe 14, and the solid matter is discharged through the sewage pipe 12.

[0046] The stirring motor 51 drives the stirring shaft 52 to rotate and then drives the stirring blade 53 to rotate and disperse. When the stirring shaft 52 rotates, it drives the brush plate 54 to rotate. The bristles 541 on the brush plate 54 brush and clean the filter screen 3 to reduce the probability of clogging of the filter screen 3. At the same time, it drives the scraper 55 to rotate to clean the inner wall of the tank body 1 to reduce the adhesion of solid matter on the inner wall of the tank body 1.

[0047] When the filter screen 3 on the filter plate 2 needs to be cleaned after being used for a period of time, the lifting cylinder 41 drives the cover plate 11 and then drives the filter plate 2 to move, and the filter screen 3 is removed from the filter plate 2 at the opening of the tank body 1 and replaced, and the lifting cylinder 41 then sends the filter plate 2 back into the tank body 1.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A Grignard reaction solvent recovery device, comprising a tank body (1), wherein the tank body (1) is provided with a water inlet (13), characterized in that: A filter plate (2) is provided in the tank body (1), a filter screen (3) is detachably mounted on the filter plate (2), the filter plate (2) is slidably connected to the tank body (1), an opening is provided at the top of the tank body (1), a cover plate (11) is provided on the tank body (1) at the opening, a lifting mechanism (4) for driving the cover plate (11) to move is provided on the tank body (1), the cover plate (11) is connected to the filter plate (2), a sewage pipe (12) is provided on the lower side of the tank body (1), and a water outlet pipe (14) and an oil outlet pipe (15) are provided on the side wall of the tank body (1) and located above the filter plate (2).

2. A Grignard reaction solvent recovery device according to claim 1, characterized in that: The lifting mechanism (4) comprises a lifting cylinder (41) and a connecting plate (42); the lifting cylinder (41) is arranged at the outer wall of the tank body (1); the driving direction of the lifting cylinder (41) is the same as the sliding direction of the filter plate (2); the connecting plate (42) is arranged at one end of the piston rod of the lifting cylinder (41); and the cover plate (11) is connected to the connecting plate (42).

3. A Grignard reaction solvent recovery device according to claim 1, characterized in that: The filter plate (2) is provided with a mounting hole (21), the filter screen (3) is placed at the mounting hole (21) of the filter plate (2), an insert block (31) is provided on the filter screen (3), a slot (22) for inserting one side of the insert block (31) is provided on the filter plate (2) at the mounting hole (21), and locking members (6) are provided on opposite sides of the insert block (31) on the filter plate (2), and the locking members (6) are used to limit the position of the insert block (31).

4. A Grignard reaction solvent recovery device according to claim 3, characterized in that: The locking member (6) includes a spring (61) and a positioning block (62). The filter plate (2) is provided with a positioning groove (23) on the side wall of the slot (22). The positioning block (62) is slidably mounted on the positioning groove (23) of the filter plate (2). The spring (61) is arranged at the positioning groove (23). One end of the spring (61) is connected to one side of the positioning block (62). The side wall of the insert block (31) is provided with a slot (311) for embedding one side of the positioning block (62).

5. A Grignard reaction solvent recovery device according to claim 1, characterized in that: A guide sleeve (16) is provided on the outer wall of the tank body (1), and a guide rod (17) is slidably mounted on the guide sleeve (16). The guide rod (17) slides along the sliding direction of the filter plate (2), and one end of the guide rod (17) is connected to the cover plate (11).

6. A Grignard reaction solvent recovery device according to claim 1, characterized in that: A stirring member (5) is provided at the bottom of the tank body (1), and the stirring member (5) comprises a stirring motor (51) and a stirring shaft (52). The stirring shaft (52) is rotatably mounted on the inner bottom wall of the tank body (1). The stirring motor (51) is provided at the bottom of the tank body (1). The stirring shaft (52) is connected to the output shaft of the stirring motor (51). A stirring blade (53) is provided on the stirring shaft (52).

7. A Grignard reaction solvent recovery device according to claim 6, characterized in that: A brush plate (54) is provided on the upper side of the stirring shaft (52), the brush plate (54) and the filter screen (3) are arranged parallel to each other, and bristles (541) are provided on the brush plate (54), and one end of the bristles (541) facing away from the brush plate (54) is in contact with a side surface of the filter screen (3).

8. A Grignard reaction solvent recovery device according to claim 7, characterized in that: A scraper (55) is provided at one end of the brush plate (54) facing away from the stirring shaft (52), the scraper (55) and the brush plate (54) are arranged perpendicular to each other, and one side of the scraper (55) is in contact with the inner wall of the tank body (1).

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