Toluene diisocyanate recovery device

Abstract

The utility model discloses a toluene diisocynate recycling device which comprises a bottom plate, a supporting column is arranged at the bottom end of the bottom plate, a distillation barrel is fixed at the top end of the bottom plate, a liquid discharging pipe is installed at the bottom end of one side wall of the distillation barrel, a heater is arranged on the other side wall of the distillation barrel, and a water outlet pipe is arranged on the heater. A filter box is mounted on one side wall of the distillation barrel and above the heater, and a liquid inlet pipe is fixed on one side wall of the distillation barrel and penetrates through the filter box. The waste residue filtering device has the beneficial effects that the overweight alarm is arranged at the bottom end of the filtering box, when the waste residue box is full of waste residues, pressure is applied to the overweight alarm, the overweight alarm can give an alarm to remind a worker to clean the waste residue box, and the anti-blocking brush is arranged at the bottom end of the residue discharging plate; and when the telescopic rod drives the slag discharging plate to move to enable impurities to fall into the slag discharging pipe, the anti-blocking brush moves in the slag discharging pipe to prevent the slag discharging pipe from being blocked, and the slag discharging efficiency of the slag discharging pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of recovery devices, in particular to a toluene diisocyanate recovery device. Background Art

[0002] Toluene diisocyanate is a colorless, transparent to light yellow liquid with a pungent odor. Its color darkens when exposed to light. It is insoluble in water but soluble in acetone, ethyl acetate and toluene. A toluene recovery device is required in the production process of toluene diisocyanate.

[0003] A Chinese patent with patent number CN216677018U discloses a toluene recovery device for producing 3,5-dichlorophenyl isocyanate (DCPI), comprising a distillation device, a feed pipe is fixedly connected to the left side of the distillation device, an exhaust pipe is fixedly connected to the top of the distillation device, and a condenser is fixedly connected to the middle of the exhaust pipe.

[0004] During use, the above-mentioned patent uses a connecting rod to drive the stirring blade to stir the raw liquid, thereby accelerating the distillation speed of the raw liquid, solving the problem of slow distillation effect of the existing toluene recovery device, facilitating the recovery of toluene, and increasing the recovery efficiency of toluene. However, since the waste residue box is not transparent, when the waste residue box is full of waste residue and needs to be poured out, the staff cannot handle it in time, and impurities falling into the residue discharge pipe will cause clogging risks, requiring the staff to disassemble the filter box for unblocking, which reduces the residue discharge efficiency. Therefore, a new toluene diisocyanate recovery device is urgently needed to solve these problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The technical problem to be solved by the utility model is to provide a toluene diisocyanate recovery device which can prevent blockage and has a reminder function in view of the current status of the prior art.

[0007] (II) Technical solution

[0008] The utility model is realized through the following technical scheme: the utility model proposes a toluene diisocyanate recovery device, including a base plate, a supporting column is arranged at the bottom end of the base plate, a distillation barrel is fixed at the top end of the base plate, a drain pipe is installed at the bottom end of one side wall of the distillation barrel, a heater is arranged on the other side wall of the distillation barrel, a filter box is installed above the heater on one side wall of the distillation barrel, a liquid inlet pipe is fixed on one side wall of the distillation barrel through the filter box, a filter layer is arranged in the liquid inlet pipe, a slag discharge pipe is connected to the bottom end of the liquid inlet pipe, a telescopic rod is installed on the inner wall of the filter box, a slag discharge plate is connected to the terminal end of the telescopic rod, an anti-blocking brush is fixed to the bottom end of the slag discharge plate, an overweight alarm is installed at the bottom end of the filter box, a waste slag box is connected above the overweight alarm, an exhaust pipe is arranged at the top end of the distillation barrel, a condenser is fixed at the terminal end of the exhaust pipe, and a recovery device body is installed at the bottom end of the condenser.

[0009] Furthermore, the bottom plate is welded to the support column, the support column is a rectangular structure, and the bottom plate is bolted to the distillation barrel.

[0010] By adopting the above technical solution, the support column can better support the bottom plate, and the distillation barrel can be more stably installed on the bottom plate to prevent the distillation barrel from shaking.

[0011] Furthermore, the drain pipe is formed on a side wall of the distillation barrel, the drain pipe is a cylindrical structure, and the distillation barrel is bolted to the heater.

[0012] By adopting the above technical solution, the drain pipe can better discharge the waste water used to clean the distillation barrel, the distillation barrel can better fix the heater, and the heater can better heat and distill the original liquid in the distillation barrel.

[0013] Furthermore, the distillation barrel is connected to the filter box by bolts, the liquid inlet pipe is formed on a side wall of the distillation barrel, the filter layer is embedded in the liquid inlet pipe, and the filter layer is made of biochemical cotton material.

[0014] By adopting the above technical solution, the distillation barrel can better fix the filter box, the liquid inlet pipe can make it easier for the staff to inject the raw liquid into the distillation barrel, and the filter layer can filter the impurities in the raw liquid to prevent impurities from flowing into the distillation barrel and reducing the distillation quality.

[0015] Furthermore, the liquid inlet pipe is threadedly connected to the slag discharge pipe, the filter box is bolted to the telescopic rod, the telescopic rod is welded to the slag discharge plate, and the slag discharge plate is bolted to the anti-blocking brush.

[0016] By adopting the above technical solution, the liquid inlet pipe can better fix the slag discharge pipe, the filter box can more firmly fix the telescopic rod, the telescopic rod can better drive the slag discharge plate to move, and it is convenient to put the impurities filtered on the slag discharge plate into the slag discharge pipe, and the anti-blocking brush can better clear the slag discharge pipe.

[0017] Furthermore, the filter box is bolted to the overweight alarm, the filter box is slidably connected to the waste slag box, and the waste slag box is a rectangular structure.

[0018] By adopting the above technical solution, the filter box can better fix the overweight alarm, and the overweight alarm can promptly remind the staff that the waste slag box is full, so that the staff can dispose of the impurities in the waste slag box in time.

[0019] Furthermore, the exhaust pipe is formed on the distillation barrel, the exhaust pipe and the recovery device body are both threadedly connected to the condenser, and the recovery device body is bolted to the bottom plate.

[0020] By adopting the above technical solution, the exhaust pipe can better discharge water vapor into the condenser, the condenser can cool the water vapor to form water droplets, the recovery device body can better collect the water droplets, and the recovery device body can be more firmly fixed on the bottom plate.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] In order to solve the problem that in the use of the existing toluene diisocyanate recovery device, when the waste slag box is full of waste slag and needs to be poured out, the staff cannot deal with it in time, and impurities fall into the slag discharge pipe, which will cause clogging hazards, and the staff need to disassemble the filter box for unblocking, thereby reducing the slag discharge efficiency. The utility model arranges an overweight alarm at the bottom of the filter box. When the waste slag box is full of waste slag, the overweight alarm will be pressurized, and the overweight alarm will sound an alarm to remind the staff to clean the waste slag box. Through the anti-blocking brush arranged at the bottom of the slag discharge plate, when the telescopic rod drives the slag discharge plate to move and impurities fall into the slag discharge pipe, the anti-blocking brush moves in the slag discharge pipe to avoid clogging, thereby improving the slag discharge efficiency of the slag discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a toluene diisocyanate recovery device described in the utility model;

[0025] Figure 2It is a main cross-sectional view of a filter box in a toluene diisocyanate recovery device described in the utility model.

[0026] The following are the descriptions of the reference numerals:

[0027] 1. Bottom plate; 2. Support column; 3. Distillation barrel; 4. Drain pipe; 5. Heater; 6. Filter box; 7. Liquid inlet pipe; 8. Filter layer; 9. Slag discharge pipe; 10. Telescopic rod; 11. Slag discharge plate; 12. Anti-blocking brush; 13. Overweight alarm; 14. Waste slag box; 15. Exhaust pipe; 16. Condenser; 17. Recovery device body. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] like Figure 1-Figure 2 As shown, a toluene diisocyanate recovery device in this embodiment includes a base plate 1, a support column 2 is arranged at the bottom end of the base plate 1, a distillation barrel 3 is fixed at the top end of the base plate 1, the support column 2 can better support the base plate 1, the distillation barrel 3 can be more firmly installed on the base plate 1 to prevent the distillation barrel 3 from shaking, a drain pipe 4 is installed at the bottom end of one side wall of the distillation barrel 3, a heater 5 is arranged on the other side wall of the distillation barrel 3, the drain pipe 4 can better discharge the waste water for cleaning the distillation barrel 3, the distillation barrel 3 can better fix the heater 5, the heater 5 can better heat and distill the original liquid in the distillation barrel 3, a filter box 6 is installed above the heater 5 on one side wall of the distillation barrel 3, a liquid inlet pipe 7 is fixed on one side wall of the distillation barrel 3 through the filter box 6, a filter layer 8 is arranged in the liquid inlet pipe 7, and the distillation barrel 3 can better fix the filter box 6. The liquid inlet pipe 7 can make it easier for the staff to inject the raw liquid into the distillation barrel 3. The filter layer 8 can filter the impurities in the raw liquid to prevent the impurities from flowing into the distillation barrel 3 and reducing the distillation quality. The bottom end of the liquid inlet pipe 7 is connected to a slag discharge pipe 9. A telescopic rod 10 is installed on the inner wall of the filter box 6. A slag discharge plate 11 is connected to the terminal of the telescopic rod 10. An anti-blocking brush 12 is fixed to the bottom end of the slag discharge plate 11. An overweight alarm 13 is installed at the bottom end of the filter box 6. A waste slag box 14 is connected above the overweight alarm 13. The filter box 6 can better fix the overweight alarm 13. The overweight alarm 13 can promptly remind the staff that the waste slag box 14 is full, which is convenient for the staff to promptly dispose of the impurities in the waste slag box 14. An exhaust pipe 15 is arranged at the top of the distillation barrel 3. A condenser 16 is fixed to the terminal of the exhaust pipe 15. A recovery device body 17 is installed at the bottom of the condenser 16.

[0030] like Figure 1-Figure 2As shown, in this embodiment, the bottom plate 1 is welded to the support column 2, the support column 2 is a rectangular structure, the bottom plate 1 is bolted to the distillation barrel 3, the drain pipe 4 is formed on the side wall of the distillation barrel 3, the drain pipe 4 is a cylindrical structure, the distillation barrel 3 is bolted to the heater 5, the distillation barrel 3 is bolted to the filter box 6, the liquid inlet pipe 7 is formed on the side wall of the distillation barrel 3, the filter layer 8 is embedded in the liquid inlet pipe 7, the filter layer 8 is made of biochemical cotton material, the liquid inlet pipe 7 is threadedly connected to the slag discharge pipe 9, the filter box 6 is bolted to the telescopic rod 10, the telescopic rod 10 is welded to the slag discharge plate 11, the slag discharge plate 11 is bolted to the anti-blocking brush 12, the liquid inlet pipe 7 can better fix the slag discharge pipe 9, the filter box 6 can more firmly fix the telescopic rod 10, and the telescopic rod 10 can In order to better drive the slag discharge plate 11 to move, it is convenient to put the impurities filtered on the slag discharge plate 11 into the slag discharge pipe 9, the anti-blocking brush 12 can better clear the slag discharge pipe 9, the filter box 6 is bolted to the overweight alarm 13, the filter box 6 is slidably connected to the waste slag box 14, the waste slag box 14 is a rectangular structure, the exhaust pipe 15 is formed on the distillation barrel 3, the exhaust pipe 15 and the recovery device body 17 are both threadedly connected to the condenser 16, the recovery device body 17 is bolted to the bottom plate 1, the exhaust pipe 15 can better discharge water vapor into the condenser 16, the condenser 16 can cool the water vapor to form water droplets, the recovery device body 17 can better collect the water droplets, and the recovery device body 17 can be more firmly fixed on the bottom plate 1.

[0031] The specific implementation process of this embodiment is as follows: when in use, the raw liquid is first injected into the distillation barrel 3 through the liquid inlet pipe 7. The filter layer 8 in the liquid inlet pipe 7 can prevent impurities in the raw liquid from flowing into the distillation barrel 3. The distillation barrel 3 can be heated by the design of the heater 5 to improve the distillation efficiency. The overweight alarm 13 is set at the bottom of the filter box 6. When the waste slag box 14 is full of waste slag, the overweight alarm 13 will be pressurized. The overweight alarm 13 will sound an alarm to remind the staff to clean the waste slag box 14. The anti-blocking brush 12 is set at the bottom of the slag discharge plate 11. When the telescopic rod 10 drives the slag discharge plate 11 to move so that impurities fall into the slag discharge pipe 9, the anti-blocking brush 12 moves in the slag discharge pipe 9 to avoid blockage, thereby improving the slag discharge efficiency of the slag discharge pipe 9.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A toluene diisocyanate recovery device, characterized in that: The invention comprises a bottom plate (1), wherein a support column (2) is arranged at the bottom end of the bottom plate (1), a distillation barrel (3) is fixed at the top end of the bottom plate (1), a liquid discharge pipe (4) is installed at the bottom end of one side wall of the distillation barrel (3), a heater (5) is arranged on the other side wall of the distillation barrel (3), a filter box (6) is installed above the heater (5) on one side wall of the distillation barrel (3), a liquid inlet pipe (7) is fixed on one side wall of the distillation barrel (3) and passes through the filter box (6), a filter layer (8) is arranged in the liquid inlet pipe (7), and the bottom end of the liquid inlet pipe (7) is connected to A slag discharge pipe (9), a telescopic rod (10) is installed on the inner wall of the filter box (6), the terminal of the telescopic rod (10) is connected to a slag discharge plate (11), the bottom of the slag discharge plate (11) is fixed with an anti-blocking brush (12), the bottom of the filter box (6) is installed with an overweight alarm (13), the top of the overweight alarm (13) is connected with a waste slag box (14), the top of the distillation barrel (3) is provided with an exhaust pipe (15), the terminal of the exhaust pipe (15) is fixed with a condenser (16), and the bottom of the condenser (16) is installed with a recovery device body (17).

2. A toluene diisocyanate recovery device according to claim 1, characterized in that: The bottom plate (1) is welded to the support column (2), the support column (2) is a rectangular structure, and the bottom plate (1) is bolted to the distillation barrel (3).

3. A toluene diisocyanate recovery device according to claim 1, characterized in that: The drain pipe (4) is formed on a side wall of the distillation barrel (3), the drain pipe (4) is a cylindrical structure, and the distillation barrel (3) is bolted to the heater (5).

4. A toluene diisocyanate recovery device according to claim 1, characterized in that: The distillation barrel (3) is bolted to the filter box (6), the liquid inlet pipe (7) is formed on a side wall of the distillation barrel (3), the filter layer (8) is embedded in the liquid inlet pipe (7), and the filter layer (8) is made of biochemical cotton material.

5. A toluene diisocyanate recovery device according to claim 1, characterized in that: The liquid inlet pipe (7) is threadedly connected to the slag discharge pipe (9), the filter box (6) is bolted to the telescopic rod (10), the telescopic rod (10) is welded to the slag discharge plate (11), and the slag discharge plate (11) is bolted to the anti-blocking brush (12).

6. A toluene diisocyanate recovery device according to claim 1, characterized in that: The filter box (6) is bolted to the overweight alarm (13), and the filter box (6) is slidably connected to the waste slag box (14), and the waste slag box (14) is a rectangular structure.

7. A toluene diisocyanate recovery device according to claim 1, characterized in that: The exhaust pipe (15) is formed on the distillation barrel (3), the exhaust pipe (15) and the recovery device body (17) are both threadedly connected to the condenser (16), and the recovery device body (17) is bolted to the bottom plate (1).

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