Dimethyl isophthalate production distillation device

Abstract

The utility model discloses a dimethyl isophthalate production distillation device, which relates to the technical field of distillation devices, and comprises a filter box, a heating box and a cooling box, the middle part of the upper end of the filter box is provided with a placing hole, the front end of the filter box is provided with an open slot, the inner wall of the placing hole is provided with a liquid storage component, and the inner wall of the open slot is rotatably connected with a door component; a barrier plate is fixedly connected to the upper end of the inner wall of the filter box, an inclined plate is fixedly connected to the inner wall of the filter box, a detachable filter cleaning assembly is arranged in the middle of the inner side of the filter box and comprises two symmetrically-arranged fixing plates fixedly connected to the inner wall of the filter box, and a sleeve column is fixedly connected to the upper end of each fixing plate. The outer ends of the sleeve columns are slidably connected to movable sleeve plates, and a filter screen is fixedly connected between the two movable sleeve plates. According to the utility model, the filter screen can be moved up and down, so that impurities in filter screen holes are shaken, and the filtering efficiency and the distillation efficiency of liquid are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation devices, in particular to a dimethyl isophthalate production distillation device. Background Art

[0002] Dimethyl isophthalate is an organic compound obtained by the esterification of isophthalic acid with methanol. It is soluble in methanol and ethanol but insoluble in water. In the production process of dimethyl isophthalate, distillation is a key step for purification and separation of the product.

[0003] For example, the utility model patent with announcement number CN217409785U discloses a filtering and distilling equipment for synthesizing dimethyl 5-nitroisophthalate, which includes a base, a distillation flask, a steam pipe and a cooling box. The distillation flask is fixed to the middle part of the upper surface of the base by a bracket, the steam pipe is embedded in the right side of the upper surface of the distillation flask, and the cooling box is nested on the outside of the steam pipe. A liquid inlet pipe is vertically embedded in the left side of the upper surface of the distillation flask, a fixed block is installed above the right side of the liquid inlet pipe, and a limiting column and a spring are embedded in the interior of the fixed block. A support plate is fixed to the left side of the upper surface of the base, a liquid storage tank is fixed on the top of the support plate, a fixed disk is fixed above the inside of the liquid storage tank, a nozzle and an electric heating plate are fixed to the bottom of the fixed disk, and a filter disk is fixed above the connecting rod on the right side of the support plate. During use, the utility model can quickly transfer 5-nitrodimethyl isophthalate without the use of tools, which makes the operation simpler, the synthesis speed faster, and the work efficiency higher. However, there is a problem that a large amount of impurities will adhere to the surface of the filter screen after long-term use, which will cause the subsequent liquid passing through the filter screen to have a slow filtration rate, and finally lead to a decrease in the distillation efficiency of the liquid. Therefore, we propose a distillation device for the production of dimethyl isophthalate. Utility Model Content

[0004] The purpose of the utility model is to provide a distillation device for producing dimethyl isophthalate to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dimethyl isophthalate production distillation device, comprising a filter box, a heating box and a cooling box, wherein a placement hole is provided in the middle of the upper end of the filter box, an open slot is provided at the front end of the filter box, a liquid storage component is provided on the inner wall of the placement hole, a door component is rotatably connected to the inner wall of the open slot, a blocking plate is fixedly connected to the upper end of the inner wall of the filter box, an inclined plate is fixedly connected to the inner wall of the filter box, a detachable filter cleaning component is provided in the middle of the inner side of the filter box, and the detachable filter cleaning component includes Two symmetrically arranged fixed plates are fixedly connected to the inner wall of the filter box, the upper end of each fixed plate is fixedly connected to a sleeve column, the outer end of the sleeve column is slidably connected to the movable sleeve plate, a filter screen is fixedly connected between the two movable sleeve plates, the lower end of the movable sleeve plate abuts against a spring, the lower end of the spring is fixedly connected to the fixed plate, the spring is sleeved with a sleeve column, the upper end of the movable sleeve plate abuts against a cam, a follower shaft is fixedly connected between the two cams, both ends of the follower shaft are rotatably connected to the filter box through bearings, and the middle part of the outer end of the follower shaft is fixedly connected to a follower roller.

[0006] Preferably, the upper end of the sleeve column is connected to a screw rod through a thread, the upper end of the screw rod is fixedly connected to a rotating handle, and the lower end of the rotating handle abuts against the upper end of the movable sleeve plate.

[0007] Preferably, the right end of the filter box is fixedly connected to the heating box, the right end of the heating box is fixedly connected to the cooling box, the upper end of the heating box is fixedly connected to the first liquid outlet pipe, the left end of the first liquid outlet pipe is fixedly connected to the filter box, the right side of the upper end of the heating box is fixedly connected to the through pipe, the right end of the through pipe is fixedly connected to the cooling box, and the right end of the cooling box is fixedly connected to the second liquid outlet pipe.

[0008] Preferably, the door assembly includes a door body rotatably connected to the inner wall of the opening groove, a lock block is provided on the right side of the outer end of the door body, and a sealing ring is fixedly connected to the inner wall of the door body.

[0009] Preferably, the liquid storage assembly includes a liquid storage tank fixedly connected to the inner wall of the placement hole, a liquid adding tube is fixedly connected to the middle of the upper end of the liquid storage tank, a plug seat is slidably connected to the inner wall of the liquid adding tube, the liquid storage tank is connected to a liquid discharge tube at one end away from the liquid adding tube, and a solenoid valve is provided at the outer end of the liquid discharge tube.

[0010] Preferably, a base plate is fixedly connected between the two fixed plates, a plurality of evenly distributed passing columns are fixedly connected to the upper end of the base plate, and two symmetrically arranged leakage grooves are provided on the upper end of the base plate, and the leakage grooves are arranged on the outside of the passing columns.

[0011] Preferably, the inclined plate is arranged at the lower part of the detachable filtering and cleaning component, and the inclined plate is arranged at the lower part of the first liquid outlet pipe.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. A filter box, a placement hole, an open slot, a detachable filter cleaning component, a heating box, a cooling box, a first liquid outlet pipe, a through pipe, a second liquid outlet pipe and an inclined plate are provided. The utility model can move the filter mesh up and down, so that the impurities in the filter mesh holes are shaken, thereby improving the filtering efficiency and distillation efficiency of the liquid.

[0014] 2. A liquid storage component is provided to complete the removal of the plug seat, add liquid into the liquid adding tube and enter the liquid storage tank. When the liquid needs to be released, the solenoid valve can be powered by an external power supply. At this time, the solenoid valve opens to release the liquid in the liquid storage tank through the liquid discharge tube, thereby realizing the control of the liquid release amount and improving the distillation efficiency of the liquid.

[0015] 3. Set the door assembly, sleeve column, screw, rotating handle, movable sleeve plate and filter to complete the opening of the lock block. At this time, the door body can be opened. Next, turn the rotating handle. At this time, the rotating handle drives the screw to rotate. When the screw is unscrewed from the sleeve column, the movable sleeve plate is slid upward. When the movable sleeve plate is separated from the sleeve column, the filter screen is removed, which is convenient for replacing the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the blocking plate of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the detachable filtering and cleaning component of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the liquid storage component of the utility model;

[0020] Figure 5 This is a schematic diagram of the door assembly structure of the present utility model.

[0021] In the figure: 1. filter box; 2. placement hole; 3. liquid storage component; 31. liquid storage box; 32. liquid adding pipe; 33. plug seat; 34. liquid discharge pipe; 35. solenoid valve; 4. opening slot; 5. door assembly; 51. door body; 52. lock block; 53. sealing ring; 6. blocking plate; 7. detachable filter cleaning component; 71. fixed plate; 72. sleeve column; 73. screw; 74. rotating handle; 75. spring; 76. movable sleeve plate; 77. filter screen; 78. bottom plate; 79. through column; 710. leakage groove; 711. follower shaft; 712. follower roller; 713. cam; 8. heating box; 9. cooling box; 10. first liquid outlet pipe; 11. through pipe; 12. second liquid outlet pipe; 13. inclined plate. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1 - Figure 5 The utility model provides a technical solution: a dimethyl isophthalate production distillation device, including a filter box 1, a heating box 8 and a cooling box 9, a placement hole 2 is opened in the middle of the upper end of the filter box 1, an open groove 4 is opened at the front end of the filter box 1, a liquid storage component 3 is provided on the inner wall of the placement hole 2, a door component 5 is rotatably connected to the inner wall of the open groove 4, a blocking plate 6 is fixedly connected to the upper end of the inner wall of the filter box 1, an inclined plate 13 is fixedly connected to the inner wall of the filter box 1, a detachable filter cleaning component 7 is provided in the middle of the inner side of the filter box 1, and the detachable filter cleaning component 7 includes two symmetrical fixedly connected to the inner wall of the filter box 1 A fixed plate 71 is provided, and the upper end of each fixed plate 71 is fixedly connected to a sleeve column 72, the outer end of the sleeve column 72 is slidably connected to the movable sleeve plate 76, and a filter screen 77 is fixedly connected between the two movable sleeve plates 76. The lower end of the movable sleeve plate 76 abuts against a spring 75, and the lower end of the spring 75 is fixedly connected to the fixed plate 71. The spring 75 is sleeved with the sleeve column 72, and the upper end of the movable sleeve plate 76 abuts against a cam 713. A follower shaft 711 is fixedly connected between the two cams 713. Both ends of the follower shaft 711 are rotatably connected to the filter box 1 through bearings, and a follower roller 712 is fixedly connected to the middle of the outer end of the follower shaft 711.

[0024] In this embodiment, the upper end of the sleeve column 72 is connected to the screw rod 73 through a thread, the upper end of the screw rod 73 is fixedly connected to the rotating handle 74, and the lower end of the rotating handle 74 abuts against the upper end of the movable sleeve plate 76.

[0025] Specifically, by rotating the rotating handle 74, the rotating handle 74 drives the screw 73 to rotate. When the screw 73 is unscrewed from the sleeve 72, the movable sleeve 76 is slid upward. When the movable sleeve 76 is separated from the sleeve 72, the filter screen 77 is removed.

[0026] In this embodiment, the right end of the filter box 1 is fixedly connected to the heating box 8, the right end of the heating box 8 is fixedly connected to the cooling box 9, the upper end of the heating box 8 is fixedly connected to the first liquid outlet pipe 10, the left end of the first liquid outlet pipe 10 is fixedly connected to the filter box 1, the right side of the upper end of the heating box 8 is fixedly connected to the through pipe 11, the right end of the through pipe 11 is fixedly connected to the cooling box 9, and the right end of the cooling box 9 is fixedly connected to the second liquid outlet pipe 12.

[0027] Specifically, the liquid after filtering out impurities is heated by the heating box 8 , and the liquid vapor at this time enters the cooling box 9 through the pipe 11 , and the liquid vapor in the cooling box 9 is cooled and then flows out from the second liquid outlet pipe 12 .

[0028] In this embodiment, the door assembly 5 includes a door body 51 rotatably connected to the inner wall of the opening groove 4 , a lock block 52 is provided on the right side of the outer end of the door body 51 , and a sealing ring 53 is fixedly connected to the inner wall of the door body 51 .

[0029] Specifically, the lock block 52 can be opened through the door assembly 5, and the filter 77 can be easily replaced.

[0030] In this embodiment, the liquid storage component 3 includes a liquid storage tank 31 fixedly connected to the inner wall of the placement hole 2, a liquid adding tube 32 is fixedly connected to the middle of the upper end of the liquid storage tank 31, a plug seat 33 is slidably connected to the inner wall of the liquid adding tube 32, and the end of the liquid storage tank 31 away from the liquid adding tube 32 is connected to the liquid discharge tube 34, and an electromagnetic valve 35 is provided at the outer end of the liquid discharge tube 34.

[0031] Specifically, the plug seat 33 can be pulled out through the liquid storage component 3, and liquid can be added into the liquid adding tube 32 to enter the liquid storage tank 31. When the liquid needs to be released, the solenoid valve 35 can be powered by an external power supply. At this time, the solenoid valve 35 opens to release the liquid in the liquid storage tank 31 through the liquid discharge tube 34, thereby realizing the control of the liquid release amount and improving the distillation efficiency of the liquid.

[0032] In this embodiment, a bottom plate 78 is fixedly connected between the two fixed plates 71, and a plurality of evenly distributed through columns 79 are fixedly connected to the upper end of the bottom plate 78. Two symmetrically arranged leakage grooves 710 are opened at the upper end of the bottom plate 78, and the leakage grooves 710 are arranged on the outside of the through columns 79.

[0033] Specifically, the bottom plate 78 , the through column 79 and the leakage groove 710 are provided to clear the holes on the filter screen 77 through the through column 79 .

[0034] In this embodiment, the inclined plate 13 is arranged at the lower part of the detachable filtering and cleaning component 7 , and the inclined plate 13 is arranged at the lower part of the first liquid outlet pipe 10 .

[0035] Specifically, it is ensured that the liquid passing through the filter screen 77 can flow into the first liquid outlet pipe 10 from the surface of the inclined plate 13 .

[0036] Working principle: When the device is in use, the solenoid valve 35 can be powered by an external power supply. At this time, the solenoid valve 35 is opened, and the liquid enters the filter box 1 from the liquid discharge pipe 34. At this time, the liquid contacts the rotating roller, and the rotating roller drives the rotating shaft to rotate and then drives the cam 713 to rotate. At this time, the cam 713 drives the movable sleeve 76 to move up and down. At this time, the movable sleeve 76 compresses and rebounds the spring 75. At this time, the movable sleeve 76 drives the filter screen 77 to perform an up and down reciprocating motion. At the same time, impurities in the liquid are filtered on the surface of the filter screen 77. During the up and down reciprocating motion of the filter screen 77, the filter screen 77 and the passing column 79 produce a sliding action. At this time, the passing column 79 dredges the holes on the filter screen 77, and the filtered liquid flows through the surface of the inclined plate 13 and finally enters the first A liquid outlet pipe 10, at this time, the liquid passes through the heating box 8 to heat the liquid after the impurities are filtered out, and the liquid vapor at this time enters the cooling box 9 through the pipe 11, and the liquid vapor in the cooling box 9 is cooled and then flows out from the second liquid outlet pipe 12. When it is necessary to replace the filter screen 77 that has been used for a long time, the door body 51 can be opened at this time, and then the rotating handle 74 is rotated. At this time, the rotating handle 74 drives the screw 73 to rotate. When the screw 73 is unscrewed from the sleeve 72, the movable sleeve 76 is slid upward. When the movable sleeve 76 is separated from the sleeve 72, the filter screen 77 is removed at this time. The utility model realizes that the filter screen 77 can be moved up and down, so that the impurities in the holes of the filter screen 77 are shaken, thereby improving the filtration efficiency and distillation efficiency of the liquid.

[0037] 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 distillation apparatus for producing dimethyl isophthalate, comprising a filter box (1), a heating box (8) and a cooling box (9), characterized in that: A placement hole (2) is provided in the middle of the upper end of the filter box (1), an open slot (4) is provided at the front end of the filter box (1), a liquid storage assembly (3) is provided on the inner wall of the placement hole (2), a door assembly (5) is rotatably connected to the inner wall of the open slot (4), a blocking plate (6) is fixedly connected to the upper end of the inner wall of the filter box (1), an inclined plate (13) is fixedly connected to the inner wall of the filter box (1), a detachable filter cleaning assembly (7) is provided in the middle of the inner side of the filter box (1), the detachable filter cleaning assembly (7) comprises two symmetrically arranged fixed plates (71) fixedly connected to the inner wall of the filter box (1), and each of the fixed plates (71) is fixedly connected to the upper end of a sleeve column. (72), the outer end of the sleeve column (72) is slidably connected to the movable sleeve plate (76), a filter screen (77) is fixedly connected between the two movable sleeve plates (76), the lower end of the movable sleeve plate (76) is abutted against a spring (75), the lower end of the spring (75) is fixedly connected to the fixed plate (71), the spring (75) is sleeved on the sleeve column (72), the upper end of the movable sleeve plate (76) is abutted against a cam (713), a follower shaft (711) is fixedly connected between the two cams (713), both ends of the follower shaft (711) are rotatably connected to the filter box (1) through bearings, and the middle part of the outer end of the follower shaft (711) is fixedly connected to a follower roller (712).

2. A distillation apparatus for producing dimethyl isophthalate according to claim 1, characterized in that: The upper end of the sleeve column (72) is connected to a screw rod (73) via a threaded connection, the upper end of the screw rod (73) is fixedly connected to a rotating handle (74), and the lower end of the rotating handle (74) abuts against the upper end of the movable sleeve plate (76).

3. A distillation apparatus for producing dimethyl isophthalate according to claim 1, characterized in that: The right end of the filter box (1) is fixedly connected to a heating box (8), the right end of the heating box (8) is fixedly connected to a cooling box (9), the upper end of the heating box (8) is fixedly connected to a first liquid outlet pipe (10), the left end of the first liquid outlet pipe (10) is fixedly connected to the filter box (1), the right end of the upper end of the heating box (8) is fixedly connected to a through pipe (11), the right end of the through pipe (11) is fixedly connected to the cooling box (9), and the right end of the cooling box (9) is fixedly connected to a second liquid outlet pipe (12).

4. A distillation apparatus for producing dimethyl isophthalate according to claim 1, characterized in that: The door assembly (5) comprises a door body (51) rotatably connected to the inner wall of the opening slot (4), a locking block (52) is provided on the right side of the outer end of the door body (51), and a sealing ring (53) is fixedly connected to the inner wall of the door body (51).

5. A distillation apparatus for producing dimethyl isophthalate according to claim 2, characterized in that: The liquid storage assembly (3) comprises a liquid storage box (31) fixedly connected to the inner wall of the placement hole (2); a liquid adding pipe (32) is fixedly connected to the middle of the upper end of the liquid storage box (31); a plug seat (33) is slidably connected to the inner wall of the liquid adding pipe (32); an end of the liquid storage box (31) away from the liquid adding pipe (32) is connected to a liquid discharge pipe (34); and a solenoid valve (35) is provided at the outer end of the liquid discharge pipe (34).

6. A distillation apparatus for producing dimethyl isophthalate according to claim 1, characterized in that: A bottom plate (78) is fixedly connected between the two fixed plates (71), and a plurality of evenly distributed through columns (79) are fixedly connected to the upper end of the bottom plate (78). Two symmetrically arranged liquid leakage grooves (710) are provided on the upper end of the bottom plate (78), and the liquid leakage grooves (710) are arranged outside the through columns (79).

7. A distillation apparatus for producing dimethyl isophthalate according to claim 3, characterized in that: The inclined plate (13) is arranged at the lower part of the detachable filtering and cleaning component (7), and the inclined plate (13) is arranged at the lower part of the first liquid outlet pipe (10).

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